What is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbineblades etc. When both are used in the lost-wax method?

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Define what is a silver and deming drill bit?

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Define what are ceramics?

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Which metal is the best conductor of heat?

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What happens to the microstructure during service exposure?

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what is wedge load test method . what is offset method .

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What is iron ferrite and where is it found?

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What is iron ferrite, define what is it used for, and where is it found?

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How one can differentiate between 304 & 316 grades of steel (physically)?

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Which liquid would oyu use to dissolve gold?

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Define what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?

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Is there a possibility of inducing stress cracking in an insulated stainless road tanker vessel (20 tonne capacity) if the vessel is subject to rapid filling (10 tonne /hr) with liquid methane (-160 c) assuming the vessel is at ambient. If so, where could I obtain suggested cooling rates?

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