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ZINC-BASE ALLOY FOR METAL MOLD, ZINC-BASE ALLOY BLOCK FOR METAL MOLD, AND THEIR MANUFACTURE
ZINC-BASE ALLOY FOR METAL MOLD, ZINC-BASE ALLOY BLOCK FOR METAL MOLD, AND THEIR MANUFACTURE
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机译:用于金属模具的锌基合金,用于金属模具的锌基合金块及其制造
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摘要
PROBLEM TO BE SOLVED: To provide a zinc-base alloy for metal mold, excellent in molding quality, such as dimensional accuracy, as well as in workability, having strength capable of withstanding injection molding of more than tens of thousands of shots, suitable for manufacture of small-quantity-produced metal molds, free from pinholes, and capable of giving metal molds easy of repair by repair welding, etc., a zinc base alloy block, and their manufacture. ;SOLUTION: The zinc-base alloy for metal mold has a composition consisting of, by weight, 5-15% Al, 3-6% Cu, 0.01-0.1% Mg, and the balance Zn besides inevitable impurities and also has a structure where ε-phases composed of Zn-Cu solid solutions existing granular state. The zinc-base alloy block for metal mold is composed of the alloy having the above composition and structure and has ≥25 kgf/mm2 tensile strength measured at 25°C and also has ≥100 HB surface hardness. The zinc-base alloy for metal mold or the zinc-base alloy block for metal mold can be manufactured by subjecting a molten metal of the above zinc-base alloy to unidirectional solidification.;COPYRIGHT: (C)1999,JPO
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机译:解决的问题:提供一种用于金属模具的锌基合金,该锌基合金的成型质量(例如尺寸精度)以及可加工性优异,具有能够承受数万次注射成型的强度,适用于少量生产的金属模具的制造,该金属模具没有针孔,并且能够使金属模具易于通过补焊等进行维修,并且制造锌基合金块及其制造。 ;解决方案:用于金属模具的锌基合金具有以下组成:按重量计包括5-15%的Al,3-6%的Cu,0.01-0.1%的Mg和余量的Zn,除了不可避免的杂质外,还具有结构其中由Zn-Cu固溶体组成的ε相存在颗粒状态。用于金属模具的锌基合金块由具有上述组成和结构的合金组成,在25°C下测得的拉伸强度≥25kgf / mm 2 Sup>,表面硬度≥100HB 。可以通过使上述锌基合金的熔融金属单向凝固来制造用于金属模的锌基合金或用于金属模的锌基合金块。; COPYRIGHT:(C)1999,JPO
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