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We make aluminum moulds by press casting, can you suggest any thing so that the moulds should shine after casting?
1019How is solution annealing carried out? What type of furnace is required? Does one need to be heat in a salt bath?
858What 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?
1000When using mercury to recover very, fine gold from ore, what is the best way to separate the gold laden mercury from the ore?
959What 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?
935What are the compositions of brass, how can this metal be heat-treated, what is the melting point of this metal?
1009How much gold concentration should be in the organic phase (dbc) before reduction by oxalic acid solution?
999A 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?
1162For what reason would an aluminum casting, when applied with a powder coated paint finish, cause a poor finish to the paintwork.
949When 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.
953How 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?
1034
When using mercury to recover very, fine gold from ore, define what is the best way to separate the gold laden mercury from the ore?
Explain dislocation theory?
What is tack welding ?
what is the chemical composition of ceramic and define what is its atomic density?
what is a rate controlling step ? how is it dependent on reaction path ? explain with an example.
Which material is used to made up of electrodes of resistance welding?
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?
Why same casting has different hardness and machine-ability properties?
what is wedge load test method . what is offset method .
What is the use of core prints?
Which metals do not react with lithium bromide ad why?
Define what is the difference between stainless steel and alloy steel?
What are ceramics?
What is the material of E185
Explain metallurgical microscopes?
