Define what is the metallurgy use? Define what is the casting and forging?

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How is solution annealing carried out? What type of furnace is required?

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The requirement for ASTM A217 Gr. WC9 castings for valves components like Body and Bonnet were Normalising at 920+/- 20 Deg. C and Tempring 780+/- 20 Deg. C The specification calls furnace shall be calibtated within +/-14 deg. C The Heat Chart shows minimum temperature for normalising 900 to 920 Deg. C, but maximum temperature 960-990 Deg. C Tempering 780+/-20 Deg. C is within limits and accepted. Casting having integral test bars, heat trated along with castings passed in chemical znalysis and mechanical properties. Since normalising maximum temperature is not meeting specification, where castings can be salvaged or renormalised and retempered to meet specification. Whether it will have affect on remechanical properties testing

0 Answers   Leader Valves,

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what is the composition of grey cast iron grade 20?

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Is it possible to determine the heat treatment condition in stainless steel (astm a 479 gr xm-19) by checking the microstructure?

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What is the specific speed of a pump ?

0 Answers   NIC,

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Why is non-destructive testing necessary?

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Will aluminum alloy like 380 or 356 settle? Meaning while in “liquid form” above melting point will the heavier elements like copper, fe, silicon, zinc etc. Settle to the bottom of the liquid/molten aluminum after a period.

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Define what is the chemical composition of ceramic and define what is its atomic density?

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What is the chemical composition of ceramics?

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Define what medal conducts heat best?

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What are allotropes? What are the allotropes of iron and carbon?

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