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Preparation method of pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting

An aluminum bronze and casting technology, 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 and cannot be satisfied, and achieves the effects of light weight, high production efficiency and long mold life.

Active Publication Date: 2021-10-26
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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  • Preparation method of pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting
  • Preparation method of pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting
  • Preparation method of pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1: a kind of preparation method of pressure-resistant ZCuAl9Mn aluminum bronze valve body type casting, comprises the following steps:

[0036] S1, precision casting mold preparation;

[0037] According to the product structure of valve body castings, the precision casting mold of valve body castings is selected according to the shrinkage rate of 1.4%. Splicing; the precision casting mold adopts 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 30 seconds, remove the wax blank from the mold and put it in 15°C water to cool for 5 minutes to obtain the finished product Wax pattern and wax sprue; the pressure of the wax injection machine is 1.5MPa, and the temperature of the wax injection is 55°C;

[0040] S3, preparation of dewaxed formwork; ...

Embodiment 2

[0052] Embodiment 2: a kind of preparation method of pressure-resistant ZCuAl9Mn aluminum bronze valve body type casting, comprises the following steps:

[0053] S1, precision casting mold preparation;

[0054] According to the product structure of valve body castings, the precision casting mold of valve body castings is selected according to the shrinkage rate of 2.6%. Splicing; the precision casting mold adopts 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 seconds, remove the wax blank from the mold and put it in 20°C water to cool for 8 minutes to obtain the finished product Wax type and wax type sprue; wherein the pressure of the wax injection machine is 2.2MPa, and the temperature of the wax pressing is 60°C; the preparation method of the wax mate...

Embodiment 3

[0069] Embodiment 3: a kind of preparation method of pressure-resistant ZCuAl9Mn aluminum bronze valve body type casting, comprises the following steps:

[0070] S1, precision casting mold preparation;

[0071] According to the product structure of valve body castings, the precision casting mold of valve body castings is selected according to the shrinkage rate of 3.2%. It is spliced, and the precision casting mold adopts 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, hold the pressure for 60 seconds, remove the wax blank from the mold and put it in 25°C water to cool for 10 minutes to obtain the finished product Wax pattern and wax sprue; the pressure of the wax injection machine is 3MPa, and the temperature of the wax injection is 60°C;

[0074] S3, preparation of dewaxed fo...

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Abstract

The invention discloses a preparation method of a pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting. The preparation method of the pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting comprises the following steps that S1, a precision casting mold is designed according to the structure of the valve body casting; S2, a wax material is pressed into the precision casting mold through a wax injection machine to obtain a finished product wax pattern and a wax pattern pouring gate; S3, the finished product wax pattern and the wax pattern pouring gate are fixed, and then are subjected to coating and sanding procedures, and finally are dewaxed to obtain a dewaxed mold shell; S4, an aluminum block, an electrolytic manganese piece and an electrolytic copper plate are weighed correspondingly for vacuum melting and casting so as to obtain a valve body casting; S5, the valve body casting is subjected to heat treatment; and S6, the valve body casting is machined to the size of a finished product according to requirements; The preparation method of the pressure-resistant ZCuAl9Mn2 aluminum bronze valve body casting has the advantages that the process is reasonable in design, and the prepared finished valve body is excellent in performance, uniform in component, compact in structure and suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of parts casting, in particular to a method for preparing pressure-resistant ZCuAl9Mn2 aluminum bronze valve body castings. Background technique [0002] With the progress of the society, new technologies and new products are constantly emerging, and the technology is developing. At present, the design of products is based on the concepts of long life, no replacement, and more environmental protection. Therefore, the requirements for the quality of parts are getting higher and higher. Therefore, in order to improve product quality, Improvements and innovations must be made 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. For this type of valve body, high-pressure liquid needs to pass through the interior after assembly, so i...

Claims

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Application Information

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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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