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Results tagged with metallurgy
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user 33
Metallurgy is the science of the production and the processing of different metals and other metallurgic usable elements.
5
votes
Accepted
Is it necessary to preheat an investment casting mould when working in a vacuum?
Convection, Conduction, Radiation
Of the three modes of heat transfer, only one is affected by the vacuum. As you noted in your question, gaseous convection should be eliminated. That being said, the …
- 10.7k
2
votes
Is stress relieving by stretching necessary when performing a T751 heat treatment after a T651?
I am going to start out by saying that aluminum is a mess. There are too many designations and things that you can do to it after it solidifies.
To directly answer your question, what might necessita …
- 10.7k
6
votes
Why use a 'dogbone' shape for tensile testing specimens?
Starrise gave a good explanation of the reasons why a dog-bone shape is important to the tension portion of a tension test, but there is another property that is typically measured at the same time: E …
- 10.7k
8
votes
Accepted
What bolts should I specify with Weathering Steel?
For structural applications (in the US), the most common bolt for weathering steel is ASTM A 325 Type 3.
Type 1 is a plain steel bolt that can be galvanized, but in this situation the zinc in the ga …
- 10.7k
6
votes
Can you get quality welds from a multiple metal wire feed welder, or do you need separate un...
This assumes US codes are used.
The question of whether or not a quality weld can be produced needs to be proven through testing. Per AWS (American Welding Society) codes (D1.1, D1.5, etc) the welder …
- 10.7k