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species for non-ferrous metals
Apr 17, 2018

The alloys used in die-casting molds are mainly non-ferrous alloys, and ferrous metals (steel, iron, etc.) are less used because of problems such as mold materials. In the non-ferrous alloy die castings, aluminum alloys are used more widely, followed by zinc alloys. The following is a brief introduction to the situation of die-cast non-ferrous metals.


(1) Classification of die-casting non-ferrous alloys Hindered shrinkage Mixed shrinkage Free shrinkage lead alloys -----0.2-0.3% 0.3-0.4% 0.4-0.5% Low-melting-point alloy tin alloys Zinc alloys --------0.3 -0.4% 0.4-0.6% 0.6-0.8% Aluminium-silicon system--0.3-0.5% 0.5-0.7% 0.7-0.9% Die-casting nonferrous alloy aluminum-copper-aluminum-copper aluminum-magnesium system---0.5-0.7% 0.7-0.9% 0.9-1.1% High-melting point alloys Al-Zn alloys ----------0.5-0.7% 0.7-0.9% 0.9-1.1% Copper alloys


(2) Casting temperature recommended for various die-cast alloys Type of alloy Average wall thickness of castings ≤3mm Average wall thickness of castings >3mm Simple structure Complex structure Simple structure Complex structure


Aluminum alloy Aluminum silicon system 610-650°C 640-680°C 600-620°C 610-650°C


Aluminum-copper alloy 630-660°C 660-700°C 600-640°C 630-660°C


Aluminum-magnesium system 640-680°C 660-700°C 640-670°C 650-690°C


Aluminum-zinc system 590-620°C 620-660°C 580-620°C 600-650°C


Guide column guide manufacturer's introduction Zinc alloy 420-440°C 430-450°C 400-420°C 420-440°C

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