Aluminum alloy casting forming method for valve clack of sluice valve

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...

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 metallurgy process not only has high material utilization rate, but also is not suitable for Mass production requires a small amount of fine grinding of the powder metallurgy valve body before assembly and use, and the disc will wear or crack after a period of time