Many years ago, I serviced the forklifts for Portland Bolt. At the time, they stood out to me as a top quality organization. Glad to see that they are still making a quality product in the time honored American tradition.
7 років тому+5
Dude we have pubs that have been serving pints since before your continent was discovered. There's fuck all time honoured in the US.
Way to go you, Portland Bolt. It's damn nice to see an American manufacturer still going. I hope you prosper forever. By the way, I am engineer (also have my own shop where I fabricate things), and I will remember your company. Thank you.
I have recently retired as a mechanical engineer working in Detroit. I must say that Portland Bolt was a fabulous go to whenever it came to bolts, grades, codes, specs and materials. Their website is chock full of good information.
Like most blue collar guys I love this stuff. It's always good to know the how's and why's of the products and tools of the trade one works with. Great job, the video and your production facility.
I spent 30+ years in manufacturing from literally sweeping floors to upper management. I always love watching manufacturing process steps. To me, this is the colloquial backbone of American business and economic strength.
Really nice video. Thanks! I met some of your competition: a farmer up Highway 8, north of Hamilton, Ontario, has a $500,000 four-axis machine out in the barn, spends a few hours a day carving bolts out of raw stock, custom-made for customers like Hydro-Quebec. "Gotta have something to do while the cows are in the field."
I used Portland Bolt as a vendor from the late 60's until the mid 80's when I left the industry and they were my most reliable supplier. I doubt he's still there, but kudo's to Craig, the best ever.
I'm a steel detailer and use the reference info on Portland Bolt's website all the time and have for a lot of years on a lot of projects. Thank you for that.
Awesome video! Thanks so much for sharing....I wanted to learn how the threads on a 3" x 1/4" stainless steel lag bolt are derived....stamped or cut...
Hey Ken! We do not make fasteners that small. We cut threads on all the lag screws we make from 1/2" diameter and larger. On a lag screw that small in diameter, the threads are likely rolled.
I made a bolt and nut in shop class in junior high, but we didn't have such bigazz machinery. I had to affix my hex stock onto my shank. It stayed put for the grade, but as soon as it was put to use, it was done-for. Actually, I figured you started out with hex stock. Boy was I wrong. :-)
@Six Pint Wood Works - Thank you for the positive feedback! We appreciate your business. Please let us know how we can assist with any future projects that require nonstandard construction fasteners.
My grandpa used to buy from you guys before he bought a couple oster threaders.. i hated running that X1 we had one Landis head they are so much better... now i am an aerospace engineer. i miss the nuts and bolts game
Indeed. I always wonder about that too. So many American companies willing to work, and so many of them are small Mom-n-Pop shops that can offer high quality.
I worked for 16 years for big bolt corp. in chicago and also made those bolt and up to 3"x 8' and then sent them to heat thread and the quality control department made them the test of stretching their head to know how much it was the resistance they endured to know if he passed the test
Very interesting video from someone who is not in engineering. If you ever make another video or an update to this one, might I suggest that you include an approximate timeframe of how long it takes to make one of these bolts from start to finish. Also, maybe show a side by side sample of the bolts from each stage of the pickling process too? Cheers
Ray O'Neill - Thank you for the feedback and suggestions. At some point in the future, we intend to update this video and will take your comments and suggestions info consideration at that time.
I hope these guys catch the infrastructure rehab...I hope they can expand and give raises to everyone working there...Replace every bolt on every bridge nationwide...:)...That'll keep ya busy for a century or so...:) Nice to see old school small manufacturing...
I love when people think something is so "simple" but then learn how technical and detail oriented a process is. It makes me giggle like a little school girl.
Worked in a pile driver boat (USCGC Hatchet construction tender) used bolt similar to these....to hold the platform where later the channel light was placed....on the previously punched pylon into the floor of the channel.
Wow I did maintenance on all this machines at paintsville bolt and mfg. crush rolled threads. Used landis machines to shave rebar for threading. Rebuildt upsetters, landis roll threaders. Man those were the days!
left school at 15 first job making hand rails on a forge similar but larger than that-3 dyes in the end a round ball drilleed with tubing .... in the uk
DLK HAY - Thank you for the comment. Even with a not-so-favorable exchange rate, we still do a lot of work in Canada. In 2018, we shipped 286 orders to 12 provinces and territories. A few of the Canadian projects we participated in during 2018 include: Eglinton Crosstown LRT - Langley, BC, Canada - October 26, 2018, Fernie Arena - Fernie, BC, Canada - October 19, 2018, Propane Dehydrogenation Plant Project - Fort Saskatchewan, AB, Canada - October 2, 2018, Nipawin Bridge - Nisku, AB, Canada - September 18, 2018. Here is a link to more information about the shipments we send to Canada: www.portlandbolt.com/technical/faqs/does-portland-bolt-ship-to-canada/. Here is a link to a map showing these destinations: www.portlandbolt.com/about/shipment-destinations/#last.
+Austin Washburn - No, all the machinery we have is designed for short run and hot formed specials. Larger production runs are typically handled by companies that have the cold forming machinery you mentioned.
I am a cold form tooling design engineer at a header shop. This was quite an interesting video. Ive seen bolts similar to these but much shorter done in 5 and 6 station cold formers. Do you guys have any partsformers or nutformers that produce large quantities of parts in you operations?
In America it is efficient and profitable. Function over form. Similar to the way teens are concerned with their appearance whereas a mature adult is more concerned with how well they can perform in place of vanity.
I thought the factory looked modern and clean, especially the galvanizing area which is a dirty job, with acrid fumes from the salamoniac in the galvanizing tank. 😊
It's great to see companies who still have a passion for the products they make, that's why I try to buy American or British after that I tend to look at Germany and such like, even though it would be cheaper from China, would it be as good as the premium brands, i think not as much but I (like many others) choose "proudly made in America" products first because, they are just exactly that, God bless....
The application for these bolts is to anchor equipment to a concrete foundation in an electrical substation. We do also provide bolts for buildings and bridges; see some of our projects here: www.portlandbolt.com/about/projects/
Hi Frank. Thanks for the feedback. If you would like to send your email address to greg@portlandbolt.com, I will be happy to provide you with budgetary comparison pricing between galvanized and stainless anchor bolts of this size.
You are correct; rolled threads will likely produce stronger threads due to the work-hardening from roll threading and the fact that cut threading interrupts the natural grain structure of the steel. However, cut threading still produces a product that will meet the dimensional and minimum mechanical requirements of the F1554 specification. You can see more about the differences between rolled and cut threads in our videos: ua-cam.com/video/MvWmH3Dr52o/v-deo.html and ua-cam.com/video/4itib5n9AxY/v-deo.html
That's true, but the very fact that the diameter reduces from the shank aggravates the problem more than anything else. Back in college, we designed portal axles for our mini baja sae car. We didn't conventionally design the bolted joints. Instead, the bolt hole went 2.5 shank diameters into the anchoring flange before the threads even started. So not only did we have a good slip critical fit, but even if the bolts backed out, they were designed to function as pins anyway while the shank even behaved as a locating dowel. Saving weight on a handful of bolts is nothing compared to what you get from directly reducing design complexity.
Anything made, could be made to excessive spec for greater cost. The key is to first spend the money on the weakest link, the things that do fail rather than those that don't.
I use to work for a packaging company. the one thing that would drive us bonkers is the misuse of shrink wrap and stretch wrap. Shrink wrap is a sheet of plastic that is put over something then HEAT is applied causing the film to shrink. Stretch wrap is film that is put over some thing when it stretched, like saran wrap.
When I worked for power companies ( IRBY construction) we would run out of certain sizes of long bolts and we had no idea how long it would be until they showed up. Now I get some idea why.
+George Applegate - The F1554 Grade 36 anchor bolts manufactured in this video do not require heat-treatment. However, many grades of anchor bolts do, including F1554 Grade 105. F1554 Grade 36 anchor bolts are made from A36 steel and shipped in an "as-forged" condition. The heat from the forging process has little to no effect on the strength and performance of the product.
Before the invention of the wire nail machine, they used to shear wedge-shaped blanks out of iron plate, and a heading technique put the rose-head on a lot like the hex machine here. A type of upset-forging. Some thread technique on heavy bolts involves starting with a rod of a diameter between the root diameter and the external outermost thread diameter of what would be the finished product. The threads are hot-rolled (I think) onto the rod. There is no metal removed, and the strength of the actual diameter of the unfinished rod is not compromised by metal reduction. The threads do stand taller than the diameter of the rod though, due to the flowing upward of the displaced metal to the finished diameter of the outer edge of the thread.
junkdeal - Thank you for the comment. The roll threading process you have described can be seen on this page of our website: www.portlandbolt.com/about/manufacturing/threading/.
Thank you for posting this great video and showing us how you mfr bolts! I hope in the years since posting, that you have somewhat updated your processes to make them more efficient. I hate to be the one to say it, but the labor involved seems in excess of what could be used. There's a lot of hand-handling that could be streamlined. I'm not even saying to use robots, but just by redesigning your jigs, introducing new jigs and other devices, you could make your labor more efficient. I'm not sure what your economic challenges are; whether you are protected somewhat through domestic procurement requirements, but you could protect yourself with greater efficiency. I'm not intending to just be critical, but to encourage actions that will keep more jobs here in the country. Thank you!
CuriousEarthMan - Thank you for your comments. We always welcome suggestions that will help us improve. Many construction fasteners are mass-produced using automated bolt-making equipment. These mass-produced bolts are relatively small in diameter, relatively short in length, and used in large numbers. Thousands of bolts in the same size and grade are manufactured in a single run. We are not a mass-producer. At Portland Bolt, we manufacture larger, nonstandard bolts in relatively small quantity runs. We are essentially a job shop. We make anywhere from a single bolt to runs of a few thousand. Due to the small quantities and larger sizes, automation is a challenge. Therefore, most of the companies like our in this little niche market of making large, nonstandard bolts make them one at a time by hand. There is a certain degree of craftsmanship that takes machine operators years to perfect. We would welcome specific examples of streamlining our processes. However, the bolts we make now have been made this way with little change since the inception of our company in 1912.
@@pdxbolt Thank you for responding! I would like to humbly submit a few detailed suggestions based on your response and your video. May I do that through email? To whom shall I address those suggestions, and to which email address? I am inspired by your long tradition of successful manufacturing, and perhaps there might be an item or two that helps you, not to correct you, but to serve your benefit in some way. Please let me know. Thank you!
I used to make bolts for Bethlehem Steel I made cold formed bolts from 1/4 inch in dia. To 1-1/4 in dia any length ordered --And had to run two machines at one time ---usually a 1/4 inch mach. and a 5/8th mach.. I also ran at the time the largest cold forming bolt machine in the USA. Our machines cut the wire --formed the upset--formed the head and trimmed the upset to a hex then pushed the blank bolt up a hollow tub to a pointer then up a track to the roller dies, all in one stroke once all the stations were full.
As a racer seeing cut threads scares me. Every bolt on a race car as well as aircraft have (or should have) rolled threads. Do you do any kind of stress testing or are the bolts designed to be so over-sized it doesn't matter?
Lawrence Hayes - Fortunately, we do not make automotive, aerospace, or other critical fasteners that require a high degree of precision. We manufacture large construction fasteners that, by nature, have very generous tolerances. Construction fasteners can have rolled or cut threads. We roll threads through 1" diameter. You are correct that roll threading will typically produce a stronger thread. However, cut threading is a common practice in the construction fastener industry and all bolts are tested to ensure they are strong enough to meet the minimum requirement of the various ASTM specifications used for construction applications.
John Cone - Threads of a construction fastener are cut (or rolled) with the same dimensions and tolerance regardless of whether the finished fastener will remain in a bare-metal state or be hot-dip galvanized. Since galvanizing adds between 2 - 6 mils of zinc thickness to the bolt, it is the nut that is tapped oversize to accommodate the thickness of the zinc on the external threads of the fastener. This FAQ addresses the issue in detail: www.portlandbolt.com/technical/faqs/galvanized-nuts-tapped-oversize/.
Many years ago, I serviced the forklifts for Portland Bolt. At the time, they stood out to me as a top quality organization. Glad to see that they are still making a quality product in the time honored American tradition.
Dude we have pubs that have been serving pints since before your continent was discovered. There's fuck all time honoured in the US.
Seán O'Nilbud You sound like you've been consistently drinking those pints served ever since....
@@CoolKoon I was just thinking the same thing! LOL
Seán O'Nilbud And thanks to newly discovered continent those pubs still serve and speak in your native language and not German. 🙂
Or Russian, or Arabic (in the latter case they wouldn't be serving AT ALL!)
Way to go you, Portland Bolt. It's damn nice to see an American manufacturer still going. I hope you prosper forever. By the way, I am engineer (also have my own shop where I fabricate things), and I will remember your company. Thank you.
I can't tell you how many of your bolts I have used through the years. I'm just glad you are still here in the USA !!!
Bandaz
Lol
@Paul Reed well said I was beginning to think I was a voice in the wilderness, thank you
@Paul Reed well said thank you
I have recently retired as a mechanical engineer working in Detroit. I must say that Portland Bolt was a fabulous go to whenever it came to bolts, grades, codes, specs and materials. Their website is chock full of good information.
Richard Beehner, Jr. - Thank you for the kind words.
Wow, this is so cool. Very glad to see a real product still being Made In USA.
Great to see an American company still in business after all these years.
I love watching how items are made. So often we take for granted common items, or the parts of a complex piece of machinery. Very interesting.
Like most blue collar guys I love this stuff. It's always good to know the how's and why's of the products and tools of the trade one works with. Great job, the video and your production facility.
I spent 30+ years in manufacturing from literally sweeping floors to upper management. I always love watching manufacturing process steps. To me, this is the colloquial backbone of American business and economic strength.
Really nice video. Thanks!
I met some of your competition: a farmer up Highway 8, north of Hamilton, Ontario, has a $500,000 four-axis machine out in the barn, spends a few hours a day carving bolts out of raw stock, custom-made for customers like Hydro-Quebec.
"Gotta have something to do while the cows are in the field."
I used Portland Bolt as a vendor from the late 60's until the mid 80's when I left the industry and they were my most reliable supplier. I doubt he's still there, but kudo's to Craig, the best ever.
0:55 my guy just yeets the last bar outta there! I love videos like this.
Obviously seen you make bolts with your heart. Hats off
Interesting, you guys look like you make quality bolts. Thanks for posting.
I found this video to be very interesting and informative. Thank you. Looking forward to the next one.
Excellent video of craftsmen manufacturing specialised bolts for industry.
Quality, engineering excellence and pride of workmanship. Subscribed.
Very interesting and thank you for taking us on a tour!!
I'm a steel detailer and use the reference info on Portland Bolt's website all the time and have for a lot of years on a lot of projects. Thank you for that.
That's a beauty of a bolt, I would love to have one for my wall.
SPECIFICITY: The language of engineers. This is remarkable. Thanks.
Awesome video! Thanks so much for sharing....I wanted to learn how the threads on a 3" x 1/4" stainless steel lag bolt are derived....stamped or cut...
Hey Ken!
We do not make fasteners that small. We cut threads on all the lag screws we make from 1/2" diameter and larger.
On a lag screw that small in diameter, the threads are likely rolled.
good luck Portland,
such a beautiful city once upon a time.
Cool video. Turned thousands of bolts manually and CNC. Mazatrol and G-Code. Never did the forging. Thanks
I made a bolt and nut in shop class in junior high, but we didn't have such bigazz machinery. I had to affix my hex stock onto my shank. It stayed put for the grade, but as soon as it was put to use, it was done-for.
Actually, I figured you started out with hex stock. Boy was I wrong. :-)
We bought our drift bolts here for the Sea Dreamer Project. Great quality.
@Six Pint Wood Works - Thank you for the positive feedback! We appreciate your business. Please let us know how we can assist with any future projects that require nonstandard construction fasteners.
God Bless your Company. Prayers for Many years of prosperous operation. Made in the USA!!
We can also provide this device. Please check the
following website.
www.lhinduction.com
htttp://lihuachina.en.alibaba.com
or
whatsapp:+8613539076945
We've got one of those Landis threaders at our shop, all around great machines.
They are fantastic!
Very nice. Interesting how they make those big bolts. Made in America. Right on !
Thx.
My grandpa used to buy from you guys before he bought a couple oster threaders.. i hated running that X1 we had one Landis head they are so much better... now i am an aerospace engineer. i miss the nuts and bolts game
This is pretty neat. I live an hour south of Portland and I specify the products you make every day at work (I'm a bridge designer)
Great to see quality manufacturing processes such as these. 😃👌👌👏👏👏👏
You'd have a hard time stripping one of those bolts.
Thanks for the show.
Made in the USA
Depends on the handle length of your spanner! (see Archimedes).
Awesome! These bolts are really durable and well made.
I didn't know it was LEGAL for Americans to build stuff??? holy cow!! Please keep up the great work.
Way cool, just love this stuff. I use fasteners a lot in my job.
Fascinating inside look at one of the products (production processes too) which built this country and literally help hold it together.
kudos to you Portland bolt.
glad you remain competitive.
it's a damned shame more people don't have faith in domestic products.
Indeed. I always wonder about that too. So many American companies willing to work, and so many of them are small Mom-n-Pop shops that can offer high quality.
Not about faith, it is about cost.
They have their faith connected with in the price.
I worked for 16 years for big bolt corp. in chicago and also made those bolt and up to 3"x 8' and then sent them to heat thread and the quality control department made them the test of stretching their head to know how much it was the resistance they endured to know if he passed the test
Great to see American made with pride
Very interesting video from someone who is not in engineering. If you ever make another video or an update to this one, might I suggest that you include an approximate timeframe of how long it takes to make one of these bolts from start to finish. Also, maybe show a side by side sample of the bolts from each stage of the pickling process too? Cheers
Ray O'Neill - Thank you for the feedback and suggestions. At some point in the future, we intend to update this video and will take your comments and suggestions info consideration at that time.
I hope these guys catch the infrastructure rehab...I hope they can expand and give raises to everyone working there...Replace every bolt on every bridge nationwide...:)...That'll keep ya busy for a century or so...:) Nice to see old school small manufacturing...
I makes sense
I love when people think something is so "simple" but then learn how technical and detail oriented a process is. It makes me giggle like a little school girl.
Worked in a pile driver boat (USCGC Hatchet construction tender) used bolt similar to these....to hold the platform where later the channel light was placed....on the previously punched pylon into the floor of the channel.
Great video! American made!
Thanks for posting this I enjoy watching how things aremade
Very cool! Thanks for sharing!
Wow I did maintenance on all this machines at paintsville bolt and mfg. crush rolled threads. Used landis machines to shave rebar for threading.
Rebuildt upsetters, landis roll threaders. Man those were the days!
What happened to those plants and machines, dare I ask? Who uses threaded rebar? Was glad to read your comment!
left school at 15 first job making hand rails on a forge similar but larger than that-3 dyes in the end a round ball drilleed with tubing .... in the uk
as a Boilermaker I've seen your products here in Canada
DLK HAY - Thank you for the comment. Even with a not-so-favorable exchange rate, we still do a lot of work in Canada. In 2018, we shipped 286 orders to 12 provinces and territories. A few of the Canadian projects we participated in during 2018 include: Eglinton Crosstown LRT - Langley, BC, Canada - October 26, 2018, Fernie Arena - Fernie, BC, Canada - October 19, 2018, Propane Dehydrogenation Plant Project - Fort Saskatchewan, AB, Canada - October 2, 2018, Nipawin Bridge - Nisku, AB, Canada - September 18, 2018. Here is a link to more information about the shipments we send to Canada: www.portlandbolt.com/technical/faqs/does-portland-bolt-ship-to-canada/. Here is a link to a map showing these destinations: www.portlandbolt.com/about/shipment-destinations/#last.
DLK HAY I chugged quite a few boilermakers when I was young.
+Austin Washburn - No, all the machinery we have is designed for short run and hot formed specials. Larger production runs are typically handled by companies that have the cold forming machinery you mentioned.
Is it required to rethread after hot dip galvanisation? And thank you very much for sharing.
Fantastic video! Thanks for posting!
Enjoyed your video very interesting process's thank you for sharing 👍🏼
Very interesting and informative. Thank you!
I am a cold form tooling design engineer at a header shop. This was quite an interesting video. Ive seen bolts similar to these but much shorter done in 5 and 6 station cold formers. Do you guys have any partsformers or nutformers that produce large quantities of parts in you operations?
Very interesting. Thank you for sharing.
In Europe that factory would be spotless and modern.
In America it is efficient and profitable. Function over form. Similar to the way teens are concerned with their appearance whereas a mature adult is more concerned with how well they can perform in place of vanity.
I thought the factory looked modern and clean, especially the galvanizing area which is a dirty job, with acrid fumes from the salamoniac in the galvanizing tank. 😊
It's great to see companies who still have a passion for the products they make, that's why I try to buy American or British after that I tend to look at Germany and such like, even though it would be cheaper from China, would it be as good as the premium brands, i think not as much but I (like many others) choose "proudly made in America" products first because, they are just exactly that, God bless....
Thank you! That was very informative.
Good Vid! These guys don't screw around when they make bolts.
I cant believe 452 dont like it!!, Why......been goin since 1912 & now in Al's hands, gotta be doin somthing right......cracking job.
That would be people pointing out the difference between hot dip zinc coating, and (electric current) galvanizing..!
I have wondered for some time how the hex heads where done.. thanks for the video.
Awesome video!
Looks like healty place to work
Holy cow those are big...Are those for building and bridges?
The application for these bolts is to anchor equipment to a concrete foundation in an electrical substation. We do also provide bolts for buildings and bridges; see some of our projects here: www.portlandbolt.com/about/projects/
Portland Bolt So cool
Fascinating process.
Nice, Now that wondering is answered, On the the next. How are toothpicks made. Thanks
Amazing
Thanks for all your hard work
Great video. It's inspiring me to perhaps get some videos out of thing we produce here in USA also. Thanks.
Awesome video
Most interesting. I worked in a plant for a short time that did pretty much the same thing in New Westminister BC.
Nice video!
Very interesting, thanks for sharing this video. Out of curiosity, how much does one of those bolts cost in galvanized and in stainless? Thanks.
Hi Frank. Thanks for the feedback. If you would like to send your email address to greg@portlandbolt.com, I will be happy to provide you with budgetary comparison pricing between galvanized and stainless anchor bolts of this size.
Hi, I am also in this industry. Hope we can cooperate. I have send you email.
Thanks for no music busting our ears,
My degree is in machine tool and die design and this equipment is intriguing.
I used to do this in Vegas @ Non ferrous bolt and manufacturing company. Ran a hot header.
Wouldn't the bolts have a greater tensile strength is the threads were rolled and not cut?
You are correct; rolled threads will likely produce stronger threads due to the work-hardening from roll threading and the fact that cut threading interrupts the natural grain structure of the steel. However, cut threading still produces a product that will meet the dimensional and minimum mechanical requirements of the F1554 specification. You can see more about the differences between rolled and cut threads in our videos: ua-cam.com/video/MvWmH3Dr52o/v-deo.html and ua-cam.com/video/4itib5n9AxY/v-deo.html
Very good point, thanks!!
That's true, but the very fact that the diameter reduces from the shank aggravates the problem more than anything else. Back in college, we designed portal axles for our mini baja sae car. We didn't conventionally design the bolted joints. Instead, the bolt hole went 2.5 shank diameters into the anchoring flange before the threads even started. So not only did we have a good slip critical fit, but even if the bolts backed out, they were designed to function as pins anyway while the shank even behaved as a locating dowel. Saving weight on a handful of bolts is nothing compared to what you get from directly reducing design complexity.
kdmc40 Wouldn't rolling the threads make the manufacturing more complex i.e. the end product more expensive?
Anything made, could be made to excessive spec for greater cost. The key is to first spend the money on the weakest link, the things that do fail rather than those that don't.
There's a few potential Bond Film props... acid bath ... hot dip bath ...and an assortment of heavy machinery ....
I use to work for a packaging company. the one thing that would drive us bonkers is the misuse of shrink wrap and stretch wrap. Shrink wrap is a sheet of plastic that is put over something then HEAT is applied causing the film to shrink. Stretch wrap is film that is put over some thing when it stretched, like saran wrap.
Carl Stratton - Thank you for the clarification.
No problem.
Great job
Very informative. Great to watch.
When I worked for power companies ( IRBY construction) we would run out of certain sizes of long bolts and we had no idea how long it would be until they showed up. Now I get some idea why.
Are they heat treated? I would think the head forging would soften the metal.
+George Applegate - The F1554 Grade 36 anchor bolts manufactured in this video do not require heat-treatment. However, many grades of anchor bolts do, including F1554 Grade 105. F1554 Grade 36 anchor bolts are made from A36 steel and shipped in an "as-forged" condition. The heat from the forging process has little to no effect on the strength and performance of the product.
Nice video, very interesting.
Good work bro
Nice work there...
Cool operation!
Hey guys whats the model of your peddy shears? Keep up the good work, Cheers!
Before the invention of the wire nail machine, they used to shear wedge-shaped blanks out of iron plate, and a heading technique put the rose-head on a lot like the hex machine here. A type of upset-forging. Some thread technique on heavy bolts involves starting with a rod of a diameter between the root diameter and the external outermost thread diameter of what would be the finished product. The threads are hot-rolled (I think) onto the rod. There is no metal removed, and the strength of the actual diameter of the unfinished rod is not compromised by metal reduction. The threads do stand taller than the diameter of the rod though, due to the flowing upward of the displaced metal to the finished diameter of the outer edge of the thread.
junkdeal - Thank you for the comment. The roll threading process you have described can be seen on this page of our website: www.portlandbolt.com/about/manufacturing/threading/.
Thank you for posting this great video and showing us how you mfr bolts! I hope in the years since posting, that you have somewhat updated your processes to make them more efficient. I hate to be the one to say it, but the labor involved seems in excess of what could be used. There's a lot of hand-handling that could be streamlined. I'm not even saying to use robots, but just by redesigning your jigs, introducing new jigs and other devices, you could make your labor more efficient. I'm not sure what your economic challenges are; whether you are protected somewhat through domestic procurement requirements, but you could protect yourself with greater efficiency. I'm not intending to just be critical, but to encourage actions that will keep more jobs here in the country. Thank you!
CuriousEarthMan - Thank you for your comments. We always welcome suggestions that will help us improve. Many construction fasteners are mass-produced using automated bolt-making equipment. These mass-produced bolts are relatively small in diameter, relatively short in length, and used in large numbers. Thousands of bolts in the same size and grade are manufactured in a single run.
We are not a mass-producer. At Portland Bolt, we manufacture larger, nonstandard bolts in relatively small quantity runs. We are essentially a job shop. We make anywhere from a single bolt to runs of a few thousand. Due to the small quantities and larger sizes, automation is a challenge. Therefore, most of the companies like our in this little niche market of making large, nonstandard bolts make them one at a time by hand. There is a certain degree of craftsmanship that takes machine operators years to perfect.
We would welcome specific examples of streamlining our processes. However, the bolts we make now have been made this way with little change since the inception of our company in 1912.
@@pdxbolt Thank you for responding! I would like to humbly submit a few detailed suggestions based on your response and your video. May I do that through email? To whom shall I address those suggestions, and to which email address? I am inspired by your long tradition of successful manufacturing, and perhaps there might be an item or two that helps you, not to correct you, but to serve your benefit in some way. Please let me know. Thank you!
@@CuriousEarthMan Please direct emails to Greg Lindsay - greg@portlandbolt.com. I look forward to hearing from you. Thanks.
I used to make bolts for Bethlehem Steel I made cold formed bolts from 1/4 inch in dia. To 1-1/4 in dia any length ordered --And had to run two machines at one time ---usually a 1/4 inch mach. and a 5/8th mach.. I also ran at the time the largest cold forming bolt machine in the USA. Our machines cut the wire --formed the upset--formed the head and trimmed the upset to a hex then pushed the blank bolt up a hollow tub to a pointer then up a track to the roller dies, all in one stroke once all the stations were full.
I used to make the washers for those bolts, Roy. I ran the biggest washer making machine in the country over at United Steel.
Very interesting. I was doing a little pickling of my own the other day.
Is that cooling oil filtered out and recirculated? I always wondered about that.
@Alonzo Branson - Yes, the cutting oil is filtered and recirculated.
And here I thought Portland was just full of nuts! Who knew.😃
It takes a bolt to screw a lose nut!
Pop lol
Oh, there's lots of nuts, as we see on the daily news...but none of them are the hard-working men manning these factories.
that's funny very funny very funny ...ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha ha..
@Concerned Citizen Tweakers do this willingly.
Beautiful machinery
As a racer seeing cut threads scares me. Every bolt on a race car as well as aircraft have (or should have) rolled threads. Do you do any kind of stress testing or are the bolts designed to be so over-sized it doesn't matter?
Lawrence Hayes - Fortunately, we do not make automotive, aerospace, or other critical fasteners that require a high degree of precision. We manufacture large construction fasteners that, by nature, have very generous tolerances. Construction fasteners can have rolled or cut threads. We roll threads through 1" diameter. You are correct that roll threading will typically produce a stronger thread. However, cut threading is a common practice in the construction fastener industry and all bolts are tested to ensure they are strong enough to meet the minimum requirement of the various ASTM specifications used for construction applications.
Cool video , thanks
Coke/Pepsi are also caustic sodas for your GI tract
Hi, when cutting the tread how much do you allow for the thickness of the galvanising please.?
John Cone - Threads of a construction fastener are cut (or rolled) with the same dimensions and tolerance regardless of whether the finished fastener will remain in a bare-metal state or be hot-dip galvanized. Since galvanizing adds between 2 - 6 mils of zinc thickness to the bolt, it is the nut that is tapped oversize to accommodate the thickness of the zinc on the external threads of the fastener. This FAQ addresses the issue in detail: www.portlandbolt.com/technical/faqs/galvanized-nuts-tapped-oversize/.
Thank you for getting back to me, interesting.
How about Heat-Treatment.. Any upsetting Hardening & tempering is not required...???
For many grades of fastener, heat treatment is required after the heading process. For some low carbon grades however, heat treatment is not required.
Thank you..
Great vid