Відео

Beautifully crafted

6:22 in the sink with the water fountain and the red hot specimen, we can see how it cools down at different rates, but since there is lots of radiation emanating from the cylinder mantle, the cooling isn't only done by the water, especially in the slower part of cooling . This radiative heat loss may infer with the precision of this Lab test! A mirror like mantle around the test specimen, reflecting the IR-radiation back, would improve, smoothen the radial temperature profile and thus reduce the radial hardness differences, making the followiing hardness tests less dependent on the depth of the ground flat surface!

You guys have the list of components of the specific alloy and know its quality and usefullness. But one element is missing: Hydrogen! it is hard for a Lab to get a hold on this "volatile ingredient" and it's presence or non presence makes a difference. At higher temperature H gets more mobile and diffuses to grain boundaries, weakening them! The most reliable way to analyze hydrogen content in alloys is in a Research Reactor by measuring the Neutron scattering (hydrogen atoms and metal atoms have very different scattering properties!). it can be done in Garching/Munich, ORNL Tennessee, and Touluse/France. in Britain, I don't know. in the "Greenish-" future, discussed and hyped so much by those many "climate-change-expert experts", Hydrogen embrittlement will become a real pain ! Worse than sulfur or phosphorus! I suspect that the quality of the final steel even depends on the quality of the coke used in the blast furnace; all the oxygen blowing and even vacuum doesn't get H out, completely, once it is in the melt. Have You heard of the problems of the International Standards of weight, the Gold-Iridium Standard-kg (originally smeltered in GB, and then measured in Paris)? Problem is that the samples are drifting apart in weight over a century's time!! Culprit: there was and is a different amount of H in the "kg-Standards", depending which "Standard-kg" was cast first to Last; in that order/row probably! Historically these 18th century standards hadn't been smeltered in vacuum and they hadn't been smeltered on a electrical oven either!

thanks for the explanation, but I would like to ask, how long do you cool the specimen in the reservoir jominy?

Well explained!!!

Proves Karen Reads innocence

Explain how you set up that rate of change of pollution concentration?

VERY EXPLANATORY 👍 👍

✈️

Excelente explicación

Thanks... Good Share.

wich is the article where I can find the grain size simulation, min 3:10, please?

Thanks a lot for the content provided. Does this mean you would have to redo the process over and over again, in order to make the entire piece of steel achieve the same hardability or is this process only done in order to understand the affect of the cooling on the crystal structure of the metal and why you would want to cool down the entire object in steel production for a stronger material?

in example 2 our a=5 and so our f(t-a)=f(t-4)=(t-4)^2 so our f(t)=t^2 so we should calculate the Laplace transform of t^2 times e^-4s would you please clarify why you calculated the Laplace transform of (t-4)^2 instead?

Find a different narrator.

good!

Very few people understand the meaning of "hardenability". This provides a very good explanation.

Awesome presentation

Chromoly is easier to water quench than 1095. Just dunk it fast and it'll take abuse from masonry. The perfect demolition steel.

Many people mistake hardness for shear stregth or tensil strength or modulus of elasticity.

Nice

Thanks, I never knew how the tests were done before seeing this video. It's actually very simple set up for the quench, but I'll bet the other equipment needed is 'quite expensive'? Still very interesting though.

Good vid, though I would have loved to see you actually complete all the tests and produce an actual curve.

Thanks for this ☺️☺️

Thank you par Sayar

Finally a quality made youtube video on the topic

69th view lets go

@ in his during

finally some good video

we run a plastic recycling company in indonesia - this video is incredibly helpful thankyou so much could you make a lab procedure for hardness, ash content, and tensile test for polymers?

Nice 🎉

GREAT VIDEO..BTW WHATS THE NAME OF THE SONG..

NEED A VIDEO ON "Legendre's Differential Equation" METHOD

Can you help me how to draw graph static pressure and total pressure vs cross sectional area in WT1?

That division makes NO SENSE. What happened to the first 2y?

Is it weird that math makes me hungry?

do you have any advanced engineering books to recommend for maths?

Thank you so much for the detailed explanation, keep it up!!

Keep it up !

Keep it up !

Sir how can we write the general solution or complete of series form into compact form means in summation form make a video on it.

absolutely life changing

Does this work in Minecraft?

I love such Videos