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A kind of preparation method of pressure-resistant zcual9mn2 aluminum bronze valve body casting

A technology of aluminum bronze and castings, which is applied in the field of parts casting, can solve the problems of material composition uniformity and performance, casting quality is not very good, can not be satisfied, etc., and achieve the effect of light weight, high production efficiency and good material density

Active Publication Date: 2022-07-29
SIRUI ADVANCED COPPER ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sand casting is a traditional method of manufacturing aluminum bronze valve bodies. The valve body produced by this process is not very good in terms of material composition uniformity and performance, including casting quality. It can meet the requirements for use in less demanding environments, but for large When the key components in the equipment require corrosion resistance, pressure resistance, and long life, the sand casting solution can no longer meet the requirements, and another process method that can produce higher-quality aluminum bronze valve bodies is required. Therefore, the investment mold The solution of casting mold shell and vacuum casting came into being

Method used

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  • A kind of preparation method of pressure-resistant zcual9mn2 aluminum bronze valve body casting
  • A kind of preparation method of pressure-resistant zcual9mn2 aluminum bronze valve body casting
  • A kind of preparation method of pressure-resistant zcual9mn2 aluminum bronze valve body casting

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Embodiment 1

[0035] Embodiment 1: a method for preparing a pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting, comprising the following steps:

[0036] S1, precision casting mold preparation;

[0037] According to the product structure of valve body castings, the valve body casting precision casting mold is selected according to the shrinkage rate of 1.4%. Spliced ​​together; precision casting molds are commercially available products;

[0038] S2, wax type preparation;

[0039] Put the wax material into the wax injection machine, and then use the wax injection machine to press the wax material into the precision casting mold obtained in step S1, keep the pressure for 30s, demould the wax mold preform and put it into 15 ℃ water to cool for 5 minutes to obtain the finished product Wax type and wax type runner; the pressure of wax injection machine is 1.5MPa, and the temperature of wax pressing is 55℃;

[0040] S3, preparation of dewaxed mould shell;

[0041]S30, the finishe...

Embodiment 2

[0052] Embodiment 2: a preparation method of a pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting, comprising the following steps:

[0053] S1. Preparation of precision casting molds;

[0054] According to the product structure of valve body castings, the valve body casting precision casting mold is selected according to the shrinkage rate of 2.6%. Spliced ​​together; precision casting molds are commercially available products;

[0055] S2, wax type preparation;

[0056] Put the wax material into the wax injection machine, and then use the wax injection machine to press the wax material into the precision casting mold obtained in step S1, hold the pressure for 50 s, demould the wax mold preform and put it into 20 ° C water for cooling for 8 minutes to obtain the finished product. Wax-type and wax-type runner; wherein the pressure of the wax injection machine is 2.2MPa, and the wax pressing temperature is 60°C; the preparation method of the wax material is: 1) Pu...

Embodiment 3

[0069] Embodiment 3: a kind of preparation method of pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting, comprising the following steps:

[0070] S1. Preparation of precision casting molds;

[0071] According to the product structure of valve body castings, the valve body casting precision casting mold is selected according to the shrinkage rate of 3.2%. Spliced ​​together, the precision casting mold is made of commercially available products;

[0072] S2, wax type preparation;

[0073] Put the wax material into the wax injection machine, and then use the wax injection machine to press the wax material into the precision casting mold obtained in step S1, keep the pressure for 60s, demould the wax mold preform and put it into 25 ℃ water to cool for 10min to obtain the finished product Wax-type and wax-type runner; the pressure of wax injection machine is 3MPa, and the temperature of wax pressing is 60℃;

[0074] S3, preparation of dewaxed mould shell;

[0075] ...

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Abstract

The invention discloses a method for preparing a pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting, comprising the following steps: S1. Designing a precision casting mold according to the valve body casting structure; S2. Using a wax injection machine to press wax into the precision casting mold material, to obtain the finished wax mold and the wax mold runner; S3, fix the finished wax mold and the wax mold runner, then carry out the coating and sanding processes, and finally carry out the dewaxing treatment to obtain the dewaxed mold shell; S4, respectively call Take aluminum blocks, electrolytic manganese sheets and electrolytic copper plates for vacuum smelting and casting to obtain valve body castings; S5, heat treatment to valve body castings; S6, process valve body castings to finished sizes as required; the process design of the present invention is reasonable, so The prepared valve body has superior performance, uniform composition and dense organization, and is suitable for mass promotion.

Description

technical field [0001] The invention relates to the technical field of parts casting, in particular to a preparation method of a pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting. Background technique [0002] With the advancement of society, new technologies and new products continue to emerge and technology develops. At present, products are designed based on the concepts of long life, replacement-free, and more environmentally friendly. Therefore, the quality requirements for parts are getting higher and higher. Therefore, in order to improve product quality, It is necessary to improve and innovate from new technologies and new processes. Copper alloy has material properties such as wear resistance, corrosion resistance and high strength. For pressure-resistant copper alloy material parts, it is widely used in various equipment. Compression testing is required after processing, which has high requirements for material composition, structure, properties and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04B22C9/12B22C9/22B22C3/00B22D27/15C22C1/02C22C9/01
CPCB22C9/04B22C9/22B22C9/12B22C3/00C22C9/01C22C1/02B22D27/15
Inventor 刘向东唐利尖孙君鹏韩依曼刘琦田东松王群周斌王杰飞孟建鑫郭创立苟锁李潇杨亚明
Owner SIRUI ADVANCED COPPER ALLOY CO LTD
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