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Manufacturing technique for alloy mold

A manufacturing process and mold technology, which is applied in the field of aluminum alloy mold manufacturing process, can solve the problems of poor thermal stability of the mold, short service life of the mold, unsatisfactory thermal conductivity, etc., and achieve good internal quality, improved corrosion resistance, and stable charging. The effect of type feeding effect

Inactive Publication Date: 2016-06-15
SHANGHAI YADELIN NONFERROUS METAL
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Problems solved by technology

[0011] The purpose of the present invention is to provide an improved alloy mold manufacturing process, which can overcome the poor thermal stability of the mold in the prior art, poor corrosion resistance, poor wear resistance, poor thermal fatigue and unsatisfactory thermal conductivity, and short service life of the mold. some deficiencies

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the examples.

[0021] The manufacturing process of a kind of alloy mold of the present invention comprises the following steps:

[0022] Batching: The raw materials are weighed and batched according to the weight ratio. The weight percentages of each raw material are: AL: 70-80%, Cr: 4-10%, Si: 4-6%, Cu: 1-2%, Fe: 4 ~10%, Mn: 0.2~0.35%, Zn: 0.35~0.68%, Mg: 0.02~0.33%, Ni: 0.02~0.28%, Sn: 0.1~0.13%, Ti: 0.1~0.13%, Pb: 0.1~ 0.18%, the sum of the weight percentages of the above-mentioned components is 100%;

[0023] Smelting: add the prepared raw materials into the smelting furnace, the temperature of the smelting furnace is controlled at 930-960 ℃, after complete melting, the temperature drops to 710-760 ℃, after resting for 5-10 minutes, the alloy aluminum liquid is transferred to the holding furnace for refining Degassing, the temperature during refining and degassing is controlled at 690-730°C...

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Abstract

A manufacturing process of an alloy mold according to the present invention is characterized in that the manufacturing process includes the following steps: firstly weigh and batch the raw materials according to the weight ratio, then add the prepared raw materials into the smelting furnace, and after complete melting, the alloy aluminum liquid Transfer to the holding furnace for refining and degassing, then die-casting production, then preheating, cooling, injection, final molding, preheating, and heat preservation. When in use, the present invention increases the chromium content in the mold material, increases the chromium content, can increase the electrode potential of the iron in the mold steel, and improves the corrosion resistance. At the same time, the alloy aluminum liquid is poured into the production cavity through the side pouring method of double-layer runners, which realizes smooth filling and good feeding effect, and the produced conductor castings meet the process requirements of air tightness and conductivity at the same time. The filling time of alloy aluminum liquid is 0.01-0.2 seconds, and the cavity can be filled, and high-quality castings with good appearance and internal quality can be produced stably, rhythmically and efficiently.

Description

technical field [0001] The invention relates to the technical field of mold manufacturing, in particular to a manufacturing process of an alloy mold, in particular to a manufacturing process of an aluminum alloy mold used for auto parts. Background technique [0002] Aluminum alloy is a light alloy material. Due to its high strength and atmospheric corrosion resistance, it has become the preferred material for many mechanical parts. 1 / 3, low melting point (660 ℃), aluminum is face-centered cubic structure, so it has high plasticity (δ: 32~40%, ψ: 70~90%), easy to process, can be made into various profiles, The plate has good corrosion resistance; but the strength of pure aluminum is very low, and the σb value in the annealed state is about 8kgf / mm2, so it is not suitable for structural materials. Through long-term production practice and scientific experiments, people gradually strengthen aluminum by adding alloying elements and applying heat treatment, which results in a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/02C22C1/06C22C1/02B22D17/00
CPCC22C21/00B22D17/00C22C1/026C22C1/06C22C21/02
Inventor 沈林根
Owner SHANGHAI YADELIN NONFERROUS METAL
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