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Centrifugal casting method of metal piece

A technology for centrifugal casting and metal parts, applied in the field of centrifugal casting of metal parts, can solve the problems of difficult control of process parameters, high-chromium metal parts with pores, large surface roughness, etc. Small margin effect

Pending Publication Date: 2021-09-24
广东乳源益丰盛铸造有限公司
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Problems solved by technology

[0004] In the actual casting process of high-chromium alloy parts, there are problems that the key process parameters are difficult to control, and the yield of high-chromium metal parts is prone to be low. The cast high-chromium metal parts have pores, large surface roughness, and low precision. Defects, making the quality of cast high chromium alloy castings unstable

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  • Centrifugal casting method of metal piece
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  • Centrifugal casting method of metal piece

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] It is worth noting that the orientation words such as "up" and "down" involved in this article are all determined relative to the perspective of the drawings, and are only for the convenience of description, and cannot be understood as limitations on the technical solution.

[0036] see Figure 1-Figure 2

[0037] A centrifugal casting method for a metal piece, comprising the following steps:

[0038] S1: mold preheating

[0039] Before preheating the mold, clean up the rust, dust, residual paint, etc. on the surface of the mold, and strictly control the oil pollution, and there must be no oil pollution. Heat the mold to between 500°C and 550°C; the material used for the mold is heat-resistant cast iron, the demoulding dimension of the inner cavity of the mold is between 1°C and 1.3°C, and the heating time in the mold is about 5 minutes. He...

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Abstract

The invention relates to a centrifugal casting method of a metal piece. The centrifugal casting method of the metal part comprises the steps of mold preheating, coating of paint, starting of a centrifugal machine to pour molten metal, curing, cooling, surface treatment and shot blasting polishing. A mold is heated for 1 minute to 500 DEG C; and black smoke is coated on the inner surface of an inner mold of the preheated mold, the coating thickness is 0.1 mm-0.2 mm, the mold coated with the black smoke is mounted on a flange plate of the vertical centrifugal machine, the centrifugal machine is started, and the rotating speed of the centrifugal machine is kept between 900r / min and 1400r / min. Liquid-state high-chromium alloy molten steel with the temperature ranging from 1450 DEG C to 1650 DEG C is poured into the mold, and pouring is conducted for 1 minute. After pouring is completed, the liquid-state high-chromium alloy in the inner mold is cooled into a solid-state high-chromium alloy blank, and a solid-state high-chromium alloy blank is formed. A high-chromium alloy casting cast through the method is high in yield and few in sand holes and air holes, the machining allowance of the cast solid blank is smaller, and the labor cost of follow-up machining is reduced.

Description

technical field [0001] The invention relates to the technical field of centrifugal casting, more specifically, it relates to a centrifugal casting method of metal parts. Background technique [0002] High-chromium alloy steel usually refers to high-alloy steel in which the proportion of chromium (except iron) in steel exceeds 10%. High-chromium alloy steel generally has high hardness and high wear resistance, and high-chromium alloy steel is often used as raw material for bearing steel and grinding ball steel. High chromium alloy steel is suitable for dies that require better wear resistance, such as punching and shearing dies for thin and hard materials; long-life stamping dies; forming dies; forming dies for ceramics and abrasive plastics. Therefore, high chromium alloy steels are widely used in the manufacturing industry. However, the casting of high-chromium alloy parts by traditional sand casting has a relatively large machining allowance, while high-chromium alloys a...

Claims

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Application Information

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IPC IPC(8): B22D13/10
CPCB22D13/101B22D13/108
Inventor 尹顺文邓鹏翀
Owner 广东乳源益丰盛铸造有限公司
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