The hardness of steel depends on

0 Answers   NIC,

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

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Define 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 turbine blades etc. When both are used in the lost-wax method?

0 Answers  

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How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution? Is it effective on purity of gold in reduction step? Whatis the ratio of dbc to oxalic acid solution in this step?

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Define what are the compositions of brass, how can this metal be heat-treated, define what is the melting point of this metal?

0 Answers  

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what are the causes of delayed fracture in case hardened steels?

4 Answers  

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Explain some properties of manganese steel?

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What is the use od d2?

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Which is stronger, tungsten or titanium?

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Does case harden steel properties detoriates over time? Especially for guns, parts like bolt carrier, the brand new parts has been kept for 10 year and properly oiled. I am worried about its surface hardness to take the blow during firing.

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what is the meaning(definition)of EN grade of steel and also tell whats the full name of EN?

15 Answers   Hitachi, Mecon,

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Define what are ceramics?

0 Answers  

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