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Machining method of zinc-iron alloy casting

A zinc-iron alloy and mechanical processing technology, applied in the field of mechanical processing, can solve problems such as incomplete stress release, low processing yield, large processing deformation, etc., and achieve the effect of avoiding fracture

Inactive Publication Date: 2018-03-20
朱旭
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a mechanical processing method of zinc-iron alloy castings to solve the technical problems of large processing deformation and low processing yield due to incomplete internal stress release of the existing zinc-iron alloy castings in the existing mechanical processing methods of zinc-iron alloy castings

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0016] A mechanical processing method of zinc-iron alloy castings includes the following steps:

[0017] (1) First heat the zinc-iron alloy castings to 650-700℃ and maintain for 35-40 minutes;

[0018] (2) The temperature of the zinc-iron alloy castings is quickly cooled to 400-450°C within half a minute, and maintained within the temperature range of 400-450°C for 20-25 minutes;

[0019] (3) After quickly heating the zinc-iron alloy castings to 720-750°C within half a minute, perform machining in the temperature range of 720-750°C.

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Abstract

The invention provides a mechanical processing method of a zinc-iron alloy casting, which relates to the technical field of mechanical processing, comprising the following steps: (1) heating the zinc-iron alloy casting to 650-700°C and maintaining it for 35-40 minutes; The temperature of the zinc-iron alloy casting is rapidly cooled to 400-450°C within half a minute, and maintained within the temperature range of 400-450°C for 20-25 minutes; (3) The zinc-iron alloy casting is then rapidly heated to 720-750°C within half a minute After that, machining is carried out in the temperature range of 720‑750 °C. In the present invention, the rapid cooling and rapid heating of zinc-iron alloy castings can completely release the stress inside the castings, which can effectively prevent the castings from breaking during processing; at the same time, mechanical processing is carried out at a temperature of 720-750°C, because the castings as a whole are in the In the high heat state and the hardness of the zinc-iron alloy casting is greatly reduced, the heat generated locally during machining is negligible and will not cause deformation damage to the casting.

Description

Technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a mechanical processing method of zinc-iron alloy castings. Background technique [0002] Zinc-iron alloy castings are the general term for alloys mainly composed of iron, carbon and silicon. In these alloys, the carbon content exceeds the amount that can be retained in the austenite solid solution at the eutectic temperature. [0003] In order to apply zinc-iron alloy castings to mechanical parts, it is also necessary to machine zinc-iron alloy castings. The existing machining methods for zinc-iron alloy castings have the following technical problems: [0004] 1. When processing the zinc-iron alloy castings at room temperature, the zinc-iron alloy castings will be deformed due to the local heat generated during the processing; [0005] 2. The internal stress release of the casting is not complete, the generated torsion force is large, and it is easy to break during the proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P25/00
CPCB23P25/00
Inventor 朱旭
Owner 朱旭
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