Lecture 6 Sept 6

That have a low melting point and don t alloy with

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Unformatted text preview: ting point metals Department of Materials Science and Engineering 24 NC State University Die Casting -  - Hot Chamber – used for Zn and Mg alloys; metals that have a low melting point and don t alloy with die material (steel) – can t use Sn, Zn or Pb -  - Cold Chamber: Used for Al and Cu alloys -  - Molds are expensive ( dies ) -  - Surface rarely requires post-processing -  - Used for home appliances/toys/hand-tools Department of Materials Science and Engineering 25 NC State University Centrifugal Casting -  - Permanent mold rotated about it s axis at speeds of 300 – 3000 rpm -  - Parts have fine grain structure – used for making pipes -  - Impurities get left in the inner diameter Department of Materials Science and Engineering 26 NC State University Defects Department of Materials Science and Engineering...
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This note was uploaded on 04/24/2012 for the course MSE 440 taught by Professor Mathaudhu during the Fall '11 term at N.C. State.

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