مثلا سوال 130 گفته میشه ریخته گیری تحت فشار.در صورتی که من خودم پروژه process planing داشتم فصل ریخته گری موضوع پروژم بود.investment casting جوابشه
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Investment Casting Process[/h] The process commences with the production of
high quality wax patterns from aluminium injection tooling. These are mounted onto a wax runner system and the assembly dipped, or invested, into ceramic slurry. The process is repeated several times until the appropriate shell thickness is produced.
On completion, the mould is de-waxed using high pressure steam leaving an empty shell. The shell is then fired to give it mechanical strength and the molten metal poured in- this could be aluminium, brass, carbon or stainless steel; virtually any metal can be produced. The shell is then allowed to cool and removed using vibration and mechanical means such as tumble or hand shot blasting.
Castings are cut from the runner system, heat treated (when required) and finished including machining, plating etc before they are final inspected. NDT (non destructive testing) and full traceability can also be offered but castings arealways supplied with C of C (certificate of conformity)
, inspection report and chemical analysis.
This process uses only the finest quality raw material to create fine tolerances, good surface finishes and repeatable castings in a wide range of cast materials sizes and shapes. Investment castings are “
precision castings”.
http://www.deangroup-int.co.uk/
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