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Please explain annealing process,max.temperature, holding time, cooling rate and any other procedure involved for blackheart (ferrite and temper carbon). A little mottling is also observed in casting white casting. Does it have any impact on annealing.
March 10, 2010
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Please explain eutectic and eutectoid. We manufacture malleable pipe fittings. First white iron is made and then annealed. We see alot of cracks on the edges of casting where machining is required. Please explain the reason and to control it. Can you tell
March 10, 2010
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Sir, this would be an unusual question in this forum but we would like to know whether you can help us in getting experts in Investment Casting process for our new plant?
February 14, 2010
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- Please post your enquiry in ONLINE SERVICES under "Consultancy/Services/Wanted/Required" with your contact details. This is a free service to IIF Company Members. You will get response directrly from Consultants. ADMINISTRATOR
- February 15, 2010
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I think this question could only be clarified by an expert..I was thinking whether porosity issue in a aluminium casted part could possibly caused by improper machining process? -- Jainal Othman, Malaysia
February 08, 2010
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- Porosity is not caused during machining. With some Aluminium alloys requiring "ageing" it is neccessary to heat-treat the castings before machining. In the un heat-treated condition, the appearance of grain boundaries in the microstructure gives an impression of microporosity. Usually it is segregation of alloys or impurities and the 'as cast' microstructure. During heat-treatment material is homogenised which improves physical properties and machinability. PANEL EXPERT
- February 10, 2010
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