Casting production process for belt wheel casting

A technology of casting production and casting process, which is applied in the field of casting production process of pulley castings, which can solve the problems of easy cracks, limited application range, uneven density of finished pulley castings, etc., so as to ensure the quality of castings and reduce production costs , to avoid the effect of quality defects

Inactive Publication Date: 2015-04-29
QINGDAO HEDELONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of the domestic valve industry should move forward in the direction of high-end modernization. In the current casting process of

Method used

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Embodiment

[0015] The casting production process of the pulley casting of the present embodiment comprises the following steps:

[0016] (1) According to the casting process pattern diagram, core box diagram, and mold assembly diagram, first make the pattern of the wheeled disk and the pattern of the disk hole, then make the wheeled disk core and the disk hole core, and then make the wheeled disk core and the disk hole core Assemble together, dry the core sand, and get the pulley mold;

[0017] (2) Adding alloying elements to the molten iron and inoculating it when the molten iron comes out of the furnace. The molding sand used for the pulley disc core is clay sand, and the molding sand used for the disc hole core is resin sand.

[0018] (3) Pour the processed molten iron into the cavity of the pulley mold, the pouring temperature is 1400°C, the pouring time is 19 seconds, and then the heat preservation operation is carried out. The heat preservation time is 80 minutes, and then the cast...

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Abstract

The invention discloses a casting production process for a belt wheel casting; the casting production process disclosed by the invention comprises the steps of manufacturing a mould, manufacturing a sand mould, setting a core, pouring and carrying out subsequent operation in sequence; the casting production process disclosed by the invention is characterized in that the step of manufacturing the sand mould comprises filling the mould by moulding sand, compacting the moulding sand to complete a mould, and simultaneously, setting an air inflation hole in the completed mould; a step of smelting is set between the step of setting the core and the step of pouring; the step of smelting comprises selecting materials according to the casting at first, adding alloy elements into molten iron, inoculating after discharging molten iron, and then, pouring; and the step of pouring comprises injecting molten iron into a cavity and pouring to obtain the belt wheel casting. By means of the casting production process disclosed by the invention, the problems of being more in process and high in workload in processing of the belt wheel casting in the prior art are solved; the production efficiency is increased; the quality defect due to the fact that the belt wheel is processed unqualifiedly is avoided; the utilization rate of raw materials is high; the production cost is reduced; the cast belt wheel is precise in size and unnecessary to machine; and thus, the quality of the casting is effectively ensured.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a casting production process of a pulley casting. [0003] Background technique [0004] The pulley casting is used for the transmission of the synchronous pulley. The synchronous pulley transmission is composed of a closed ring-shaped belt with equidistant teeth on the inner peripheral surface and the corresponding pulley. Domestic pulleys are relatively backward compared with foreign countries, and many products have made breakthroughs in technology and innovation. The development of the domestic valve industry should move forward in the direction of high-end modernization. In the current casting process of pulley castings, the density of the finished pulley castings is not uniform, and cracks are prone to occur, and the application range is limited. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical prob...

Claims

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Application Information

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IPC IPC(8): B22C9/28B22D1/00B22C9/10
CPCB22C9/28B22C9/10B22D1/00
Inventor 常云青
Owner QINGDAO HEDELONG MACHINERY
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