Fellow Metallurgy enthusiasts, kindly help a bro land a job in a mineral processing plant or laboratory. Alternatively, I could use some funding to implement my high grade ore exporting bussiness (from Africa to Asia/Europe). I'm in my late 20s, hold a diploma in Mineral processing and extractive metallurgy. I've work with a DMS, gravity concentration, tank leaching, elution, Cu & Steel recycling and various types of ores like lithium, tantalite, tin etc. Willing to relocate pretty much anywhere around the world where there's no war and risk of being trafficked lol.

Hi,

I'm very new to home chemistry and metals in general, and would want to take on a cool first project like extracting copper from ore. I was researching some methods and hydrometallurgy seems much more accessible than pyrometallurgy, but hydro is apparently only for oxide ores whereas I can only get my hands on a sulfite ore (which needs pyro). Would it still work if I followed the basic steps of hydro (dissolve in acid, solvent transfer, electrowinning), leaving me with a coating of solid iron and copper, and then perhaps grinding it into a powder and magnetically separating them?

Thanks

So... i am a brazillian student and i need to make this project where i anneal a AISI 5160, but i need articles that have the temperatures and times and i can't find it please somebody help me

sorry if i wrote something wrong

Qualcuno saprebbe interpretare questo diagramma ?

I got xrd results from a material that show a single peak around 45 degrees. Does anyone know what this tells me or where I can find information about the significance of these results

My plant has rented a dry ice blaster to do a yearly cleaning on our annealing furnaces. This was a practice we kept up with in the past but went away with management changes over the years. Now we’re ready to get back at it, but no one has a clue what to do. I’ve reached out the vendor for instructions, but does anyone have any tips for dry ice blasting furnaces? Is it pretty straightforward? Anything to look for? PPE? Any good literature? I get a feeling the vendor’s instructions won’t be much help, just tell me how to operate.

Let's day I have a 10oz of pure silver or gold I want to turn in sterling and 22kt respectively. How much copper would I add and what math would I use? Also would I use oz or grams?

hi I am new in here.

I really hope for some help. I have a farm, and we have this special tool that we need to dig down into the ground. it has to be some type of metal, so I need to found out which metal ( like steel) that is best to use, when it has to be underground and being subjected to water etc ( from the dirt) for many years, with out breaking. which metal would you recommend? it would have to be subjected to accasional twisting ( we would have to rotate it once in a while) and all kinds of weather ( snow, heat etc) its the red part

https://preview.redd.it/nnwhhcenrqrc1.png?width=1322&format=png&auto=webp&s=1f030c76a7f15c21b1d43b5221fe262e02fd28ae

Have any Mets in this sub completed this post grad course? If so, how did you find it, was it beneficial? Would you recommend this course to a non-met with 15+ years industry experience?

SOS!! Trying to dissolve a small Ag pellet ( 0.1g>) using 1N nitric acid (standard reagent, in DI water). I've read that a 1:1 vol mixture of distilled water and 70% nitric acid with some heating seems to be effective for doing this.

How do I go about calculating the % nitric acid of the 1N nitric acid solution I have?

I've tried a 1:1 vol mixture of my 1N stock with some heating to ~120C with no luck, i don't see the characteristic brown gas producing reaction, and it seems like the acid is just passivating the Ag pellet instead of dissolving it.

Any other help/tips on the process would be greatly appreciated! Thanks!

I'm trying to replace a 0.25mm OD superelastic nitinol wire in a specific application where the kink resistance and springiness are critical but we would like to move away from nitinol for other reasons. Could you recommend any readily available alloys in this wire diameter with characteristics comparable to superelastic nitinol?

I have no idea about metallurgy, this idea came up from DnD, trying to figure out something for a dragon

Is it possible to make an alloy with tungsten and brass, or tungsten and copper, or would they come out as a bunch of blobs of two pure materials combined together?

Hi,

I'm currently writing my Bachelor's thesis and I'm interested in seeing how different companies clean their wet scrubber and cooling liquids (ie. Weak acid) in their sulfuric acid production using flue gas from, e.g., copper smelting. Is't possible that you detail the steps in your process, e.g., do you go like sedimentation -> evaporation and in the process how do you extract impurities like arsenic and selenium. Also interested in how different companies operate their gas cleaning phases. I'd appreciate if you could also give a link to a site or paper for referencing.

Thank you in advance

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https://preview.redd.it/dxe9u13fctqc1.png?width=741&format=png&auto=webp&s=991c13216244a8465eab0935bda818932128868e

I am soon to inherit a Model 12 Winchester shotgun that was(as far as i know) purchased new sometime between 1912 and 1920s-ish. My father had the gun taken to a gunsmith recently who claimed it was practically in perfect condition. Said there was no rust or rot or any cracking of the barrel or stock. That said, his only note was that he would not recommend firing the gun unless we have it taken to a metallurgist because he could not guarantee the quality of the metal after so many years. However, most of the information i have found online suggests that the whole idea of “old guns blow up” is(given the gun had been properly cared for and correct ammo is used) little more than a myth perpetuated by fudds who dont know any better. I wanted to hear it from the horses mouth so i ask you all, does gun metal become “brittle” over time and is the gun likely to blow up if it is shot?

Hi guys, i am working with a very large steel blind flange/blank, im facing the blank with GRP/FRP but i need to galvanise the non faced area. Usually i buy the blanks professionally galvanised and grind the face back to bare metal to laminate (adhesion). But i am hoping to coat this one myself due to size.

Am i making a huge mistake?

If no, what is the best procedure for "home" galvanising?

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Thankyou!

Hey guys, I'm working on a degree project using AI to identify phases of steel from Light Microscopy images. The image below is an 800x magnification of a quenched sample of steel- 0.45% C, austenitized at 900 C, (not tempered). I'm struggling to identify the retained austenite reliably in the images. I was told by my superiors that even though some grains are white and in stark contrast to its surroundings it isn't always gonna be retained austenite. What can I do? What key features should I be looking out for that screams 'retained austenite'? How can I reliably rule out particular lighter grains as martensite? Literature has been quite unreliable since it's almost entirely on tempered martensite.

https://preview.redd.it/f6ru3olwvpqc1.png?width=1920&format=png&auto=webp&s=8aed518776d037e18cd2245f56e49404ef4437b2

Every time I try and look up alloys of any metals besides iron (steel), there is never a fairly comprehensive list. Wikipedia has lists of alloys of precious metals, but they are very surface level. Is there any experimental database of a huge variety of combinations saying strength, color, melting temp, etc?

I recently purchased some metal stamps online. When they arrived, they were covered in a thin layer of black, charcoal like dust. What is that dust most likely from?

According to various data sheets, between alloys 514.0 (3.5-4.5% Mg) and 535.0 (6.2-7.5% Mg) i get that, the higher the magnesium content on the alloy, the higher the hardness and elongation percentage you get, but, aren't harder materials more brittle? Why do they both increase along with magnesium content?

According to the phase diagram, the higher the magnesium content on the alloy, the more presence of Al3Mg2 phase there is, then, what effect does this phase have on the alloy? As far as I understand, neither alloy requires heat treatment in order to be used properly.

I’ve recently been going through literatures regarding heat treatments for SLM manufactured Aluminium alloys and came to the conclusion that most common heat treatment preferred for them is T6. But however all the results are almost the same, that is a reduction in yield strength, UTS, microhardness, etc. and significant increase in ductility or elongation and improvement in fatigue life. None of the literature states the application of such heat treated samples.

So I’m curious on what particular applications, either in daily life or some others would a T6 heat treated aluminium which is manufactured by slm be the best of use?

So, aluminium has a FCC structure, while magnesium has an HCP structure, my question is, how does this impact the properties of the alloy? Why can they be alloyed when they have different crystal structures?

What is this and how old is it? (Im in Norway if it helps)