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We make aluminum moulds by press casting, can you suggest any thing so that the moulds should shine after casting?
1013How is solution annealing carried out? What type of furnace is required? Does one need to be heat in a salt bath?
855What 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?
991When using mercury to recover very, fine gold from ore, what is the best way to separate the gold laden mercury from the ore?
951What affect would increasing the charpy impact toughness on an object have on the surface of an object it strikes if all else remains the same? Would it cause moredamage to the object it strikes?
927What are the compositions of brass, how can this metal be heat-treated, what is the melting point of this metal?
1005How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution?
992A plain carbon steel contains 45 wt% of proeutectoid ferrite. What is its average carbon content in weight percent? I know that you need to use a tie line in the phasediagram, but my book does not really give a good example to go by?
1159For what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.
946When we do cardonitriding or casehardening operation for a plain carbon steel the case depth, hardness & microstructure are not alike why and what are the basicthing, which makes such a difference.
951How would a salt and water solution clean a penny but a vinegar and salt solution will not clean a penny? What is the cause of this?
1024
Define what is widman statten structure?
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?
What are allotropes?
What is the use of gap(snap)gauge
what are different grades of mild steel available for making machine structure (housing)
Why is it so hard to find literature on the wear resistance of titanium?
What is the specific speed of a pump ?
how can i prevent the backfire occurrence in copper shaft furnaces?
Explain some properties of manganese steel?
What does allotropic mean what does iron and steel have to do with it?
Is there any way through hardening and anodizing some type of aluminum, it could be as hard as steel? I have hardened steel rollers that run up and down on a ramp along with spring pressure. Alternatively, if you are familiar with snowmobiles, the rollers run on the helix on the secondary clutch.
What is d2? What is it used for?
What is gold investment casting?
Is it possible to determine the heat treatment condition in stainless steel (astm a 479 gr xm-19) by checking the microstructure?
Discuss the otto cycle with diagram.
