the alloy is mainly nonferrous alloys, as black metal ( steel, iron ) as the mold materials, being less frequently used. And non-ferrous alloy die casting with aluminum alloy is used widely, the zinc alloy. To briefly introduce the situation of die casting non-ferrous metals.
( 1), die casting non-ferrous alloy classification hindered contraction of mixed shrinkage free shrinkage of lead alloy – the 0.2-0.3% 0.3-0.4% 0.4-0.5% of low melting point alloy tin alloy zinc alloy — 0.3-0.4% 0.4-0.6% 0.6-0.8% — 0.3-0.5% 0.5-0.7% 0.7-0.9% aluminum silicon casting non-ferrous alloy aluminum alloy also aluminium-magnesium system – 0.5-0.7% 0.7-0.9% 0.9-1.1% high melting point alloy aluminum zinc magnesium alloy – 0.5-0.7% 0.7-0.9% 0.9-1.1% copper alloy
( 2 ), all types of die casting alloy casting temperature recommended species average wall thickness less than 3mm casting average wall thickness > 3mm has the advantages of the simple structure of complex structure has the advantages of the simple structure of the complex structure
Aluminum Die Casting alloy aluminum-silicon 610-650 C 640-680 C 600-620 C 610-650 C
Alcu 630-660 C 660-700 C 600-640 C 630-660 C
Aluminum magnesium series 640-680 C 660-700 C 640-670 C 650-690 C
Aluminum zinc series 590-620 C 620-660 C 580-620 C 600-650 C
Zinc alloy 420-440 C 430-450 C 400-420 C 420-440 C
Magnesium alloy 640-680 C 660-700 C 640-670 C 650-690 C
Copper alloy brass 910-930 C 940-980 C 900-930 C 900-950 C
Silicon brass 900-920 C 930-970 C 910-940 C 910-940 C
* Note : the casting temperature to heat furnace temperature measurement of liquid metal.
The zinc alloy casting temperature can not be higher than 450 centigrade, in order to avoid coarse grain.