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Machining technology of hand shanks for valves
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A processing technology and handle technology, which is applied in the processing technology field of valve handles, can solve the problems of insecure installation of plastic pipe sleeves, poor hand feeling of metal handles, loss of protective effect, etc., and achieve enhanced strength, mechanical properties and corrosion resistance. Improve and improve the effect of mechanical strength
Inactive Publication Date: 2018-12-21
江苏天泽教育咨询有限公司
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[0002] The valve is the control part in the fluid conveying system, which has the functions of cut-off, adjustment, diversion, prevention of reverse flow, pressure stabilization, diversion or overflow pressure relief; the valve handle is a control part of the valve, which is connected with the valve core and used In order to realize the movement of the valve by manpower; since the opening and closing of the valve requires a certain torque, in order to ensure the strength of the valve handle, the handle body is usually made of metal materials; however, the metal handle does not feel good and may be rusted, affecting the use
[0003] The existing valve handle is usually provided with a plastic sleeve at the control end of the valve, as a protective cover for the valve control end, which improves the handle of the valve handle and plays the role of rust prevention, but the installation of the sleeve plastic sleeve is not firm and easy Displacement occurs, or even slips off from the control end, losing protection
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Embodiment 1
[0030] The processing technology of the valve handle of the present embodiment comprises the following steps:
[0031] (1) Ingredients, the mass percentage of each component in the handle body is: C: 0.03%, Cr: 3.13%, Mn: 0.45%, Zn: 0.56%, Cu: 0.73%, Ag: 0.12%, Ni: 0.24%, Mo: 0.05%, Nd: 0.03%, Ce: 0.02%, Eu: 0.04%, Lu: 0.01%, and the balance is Fe;
[0033] A. Add the raw materials into the furnace according to the predetermined mass percentage of each component, and the raw materials are smelted to form an alloy solution;
[0034] B. Cool the alloy solution obtained in the previous step, and use air cooling to cool the alloy solution to 800-850 degrees Celsius at a cooling rate of 11-13° C. / s to obtain an alloy;
[0035] C. The alloy solution cooled in the previous step is subjected to secondary melting in the furnace, and the alloy is secondary smelted to form an alloy solution;
[0049] The processing technology of the valve handle of the present embodiment comprises the following steps:
[0050] (1) Ingredients, the mass percentage of each component in the handle body is: C: 0.05%, Cr: 4.19%, Mn: 0.67%, Zn: 0.83%, Cu: 1.13%, Ag: 0.16%, Ni: 0.38%, Mo: 0.11%, Nd: 0.09%, Ce: 0.07%, Eu: 0.12%, Lu: 0.08%, and the balance is Fe;
[0052] A. Add the raw materials into the furnace according to the predetermined mass percentage of each component, and the raw materials are smelted to form an alloy solution;
[0053] B. Cool the alloy solution obtained in the previous step, and use air cooling to cool the alloy solution to 800-850 degrees Celsius at a cooling rate of 11-13° C. / s to obtain an alloy;
[0054] C. The alloy solution cooled in the previous step is subjected to secondary melting in the furnace, and the alloy is secondary smelted to form an alloy solution;
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Abstract
The invention relates to a machining technology of hand shanks for valves, and belongs to the technical field of valve equipment. The machining technology of the hand shanks for the valves comprises the following steps that (1) material proportioning is carried out; (2) raw materials are smelted; (3) continuous casting and continuous rolling are carried out; (4) punch forming is carried out; (5) turning is carried out on blanks of the hand shank bodies, and grinding and polishing are carried out on the blanks of the hand shank bodies subjected to turning so as to obtain the hand shank bodies;(6) heat treatment is carried out on the obtained hand shank bodies; (7) pure aluminum coatings are electroplated on the surfaces of the hand shank bodies; and (8) the hand shanks for the valves are checked one by one. According to the machining technology of the hand shanks for the valves, Zn and Ni are contained, so that the heat resistance and corrosion resistance are enhanced; and the continuous casting and continuous rolling, punch forming and heat treatment processes cooperate with one another, so that the mechanical strength of the hand shanks for the valves is greatly improved, and theservice life is prolonged by 50-60%.
Description
technical field [0001] The invention relates to a processing technology for a valve handle, which belongs to the technical field of valve equipment. Background technique [0002] The valve is the control part in the fluid conveying system, which has the functions of cut-off, adjustment, diversion, prevention of reverse flow, pressure stabilization, diversion or overflow pressure relief; the valve handle is a control part of the valve, which is connected with the valve core and used In order to realize the movement of the valve by manpower; since the opening and closing of the valve requires a certain torque, in order to ensure the strength of the valve handle, the handle body is usually made of metal materials; however, the metal handle does not feel good and may be rusted, which affects the use. [0003] The existing valve handle is usually provided with a plastic sleeve at the control end of the valve, as a protective cover for the valve control end, which improves the han...
Claims
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Application Information
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