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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When austenitized, carbon steel is quenched, why is the bcc crystal elongated into a body-centered tetragonal crystal structure?

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what is the difference between digital signal and discrete signal?

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What special precautions need to be employed if a powder metallurgy route is chosen?

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what is the difference beteeen Annealing and stress releaving

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1)We are using OHNS material for manufacturing Thread & plain Gauges.What is the excat composition of OHNS for Gauges? 2)Which is the reference standard book for OHNS Material composition for Gauges?

0 Answers   Sail,

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HOW ARC PRODUCE IN ELECTRIC ARC FURNACE

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What is a cryogenic fluid?

0 Answers   Essar,

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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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we have many gas turbine blades, during the shot blasting process some of shots entrapeed in the cooling hole of blades..how can we remove the shots entrapped in holes????

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Explain rupture stress

0 Answers   NIC,

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What is a master gauge ?

0 Answers   Essar,

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