Aluminum alloy casting forming method for valve clack of sluice valve

A casting molding, aluminum alloy technology, applied in the field of aluminum alloy casting molding of gate valve disc, can solve the problems of slow processing speed of gate valve disc, unsuitable for mass production, valve disc wear or crack, etc., to improve high temperature compressive strength , long service life, and the effect of improving quality

Inactive Publication Date: 2013-03-20
ANHUI CHUNHUI INSTR CABLE GROUP
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AI Technical Summary

Problems solved by technology

Compared with the powder metallurgy gate valve, the processing speed of the gate valve disc made of ordinary high-speed steel or stainless steel is slow, and the material utilization rate is not high. However, the gate valve disc manufactured by powder metall

Method used

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Embodiment Construction

[0022] An aluminum alloy casting molding method for a gate valve disc, comprising the following steps:

[0023] a. Select the composition raw materials, wherein the weight percentage of each alloy composition: silicon 2.7-3.1%, magnesium: 0.2-0.7%, iron 0.05-0.16%, manganese 0.05-0.4%, titanium 0.01-0.08%, strontium 0.01-0.03%, Chromium 0.05-0.15%, the balance is aluminum;

[0024] b. Heat the above-mentioned alloy components to 800-900°C, melt into molten metal, detect the content of chemical components, and then add corresponding deficient element metals to the above-mentioned molten metal and mix evenly to form a pouring liquid;

[0025] c . Pouring pouring liquid into the sand mold through the gate, cooling and solidifying, and steaming after taking it out to obtain the gate valve disc. The steam treatment is water atomization steam treatment, the treatment time is 3-4 hours, and the temperature is 550-650°C ;

[0026] d. Heat treatment: Normalize first, keep the molded...

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Abstract

The invention discloses an aluminum alloy casting forming method for a valve clack of a sluice valve. The method comprises the following steps: step a, selecting constituent raw materials, wherein alloy components comprise, by weight, 2.7-3.1 % of silicon, 0.2-0.7 % of magnesium, 0.05-0.16 % of ferrum, 0.05-0.4 % of manganese, 0.01-0.08 % of titanium, 0.01-0.03 % of strontium, 0.05-0.15 % of chrome and the balance aluminum, step b, heating the alloy components to 1400-1500 DEG C, melting the alloy components into molten metal, detecting content of chemical components, and then adding corresponding absent chemical metal elements into the molten metal, and mixing evenly to form a pouring solution. The aluminum alloy casting forming method is relatively high in production continuity, high in material utilization and suitable for mass production so that cost is reduced.

Description

technical field [0001] The invention relates to a preparation method of a gate valve, in particular to an aluminum alloy casting forming method of a gate valve disc. Background technique [0002] The opening and closing part of the gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The direction of movement of the gate valve is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. [0003] At present, in the manufacture of gate valve industry, domestic gate valve discs are made of ordinary high-speed steel materials, or stainless steel materials are machined into spherical gate valve discs. Compared with the powder metallurgy gate valve, the processing speed of the gate valve disc made of ordinary high-speed steel or stainless steel is s...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22F1/043C23C8/20C23C8/24F16K27/00
Inventor 沈必亮
Owner ANHUI CHUNHUI INSTR CABLE GROUP
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