Low-nickel and high-iron copper alloy glass mould and manufacturing method thereof

Abstract

The invention relates to a low-nickel and high-iron copper alloy glass mould and a manufacturing method thereof. The mould has better oxidization resistance, heat fatigue resistance, heat conductivity, enhanced toughness, good heat cracking resistance, and has the advantages of easiness of machining, reduced cost and long service life. The low-nickel and high-iron copper alloy glass mould comprises the following components in weight percentage: 0.05-0.2% of Si, 8.0-10.0% of Al, 4.0-6.0% of Ni, 0.05-0.25% of Zn, 4.0-6.0% of Fe and 0.8-1.5% of Mn; after the components are smelted, the smelted components are cast at 1250-1280 DEG C; the heat-preservation time of heat treatment is 6 hours and the temperature is controlled at 680 DEG C; and the mixture is reduced to 150 DEG C along the furnacetemperature, the furnace temperature is raised to the room temperature and then the product is taken out to obtain the glass mould which has the properties that the tensile strength is 400-450 N / mm<2>, the Brinell hardness is 175-200, the bending strength is 350 N / mm<2>, the thermal conductivity is 0.12-0.15 k / M*S*DEG C, the thermal expansion coefficient is 17*10<-6> m / k and the service life is 1.3-1.5 million times.

Description

technical field [0001] The invention relates to a glass mold, in particular to a low-nickel high-iron copper alloy glass mold. The present invention also relates to a method for manufacturing the aforementioned glass mold. Background technique [0002] Due to the advantages of copper alloy materials such as excellent thermal conductivity, good castability, and long service life, copper alloys are generally used as mold materials for high-end glass container products at home and abroad. [0003] Glass mold is a tool for making glass products. In the process of forming glass products, the good thermal conductivity of the material minimizes the temperature gradient inside and outside the mold, which can prolong the service life of the mold. Copper alloy material has excellent thermal conductivity, which can not only prolong the service life of the mold, but also play a great role in the forming effect of glass products. It can effectively prevent the temperature of the glass f...

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Problems solved by technology

[0006] For example, the composition (wt%) of silicon nickel copper alloy is: Si0.8~1.2%, Al8.5~10.5%, Ni7.5~9.5%, Zn7.5~9.5%, Fe0.8~1.0%, Mn0 .08~0.1%, Gu remaining; although the alloy copper material in this study has high hardness and oxidation resistance, it is difficult to process, easy to crack, and high in cost

In the high temperature state, if the temperature drop gradient is large, the service life of the mold will be greatly reduced

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