Superthin-wall aluminium-alloy high-speed pressure casting method

Abstract

This present invention relates to a method of high speed die-casting of super thin wall aluminous alloy. It comprises the steps as follow: putting a model in a die-casting machine, setting up the die-casting parameter, keeping the casting pressure at 780kg / cm2, model temperature 250Deg.c, solvent temperature 700Deg.c, then injecting the aluminous alloy into die-casting machine. Shoot up with 0.23m / sec to make cast whose wall thickness is less than 1.0mm, then take the cast out and plastic, smear, detect to satisfy international standard. This cast can be applied mainly in 3C product while the crust of computer, digital camera and mobile telephone.

Description

Technical field [0001] The invention relates to a high-speed die-casting method for ultra-thin-walled aluminum alloy, in particular to a copper-added aluminum alloy. Through the setting of the parameters of a high-pressure forming machine, a casting that can change the original tensile strength can be produced to make it light and thin. , Short advantage. Background technique [0002] At present, the scope of application of thin-walled products in the industry is mainly the case of 3C products, such as: notebook computers, digital cameras, mobile phones, and CD walkmans. The main production methods are injection molding, metal die-casting or stamping products. Magnesium alloys are usually used in metal die-casting. However, because the cost of magnesium alloy die-casting and the cost of surface treatment are higher than aluminum alloys, the metal texture and characteristics are also better. When magnesium alloy is better, in the development and application of 3C products, aluminu...

AI Technical Summary

Problems solved by technology

[0003] In general, traditional die-casting aluminum alloys, in die-casting, the cooling speed of the molten soup in the mold cavity is quite fast. When forming thin-faced castings, it is difficult to fill the mold and the material is not rigid enough. There is a possibility of deformation when the casting is ejected. Therefore, die-casting The aluminum alloy used for forming must adjust the composition of the alloy to increase the strength and rigidity of the material

[0004] Therefore, when making castings with thin walls and large surfaces, engineers usually design the wall thickness of the castings between 1.5 and 2.0 millimeters (mm), or even larger, to avoid the casting being too thin and causing the metal solution to be insufficiently poured into the mold. However, for the current general portable 3C products, the casting thickness of 1.5 to 2.0 millimeters (mm) is still too high to meet the needs of 3C products. In view of this, how to reduce the cost of aluminum alloy die-casting Thickness, according to meet the needs of 3C product use, is what the inventor wants to improve

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