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Process flow and product design of copper valve
- Categories:Industry Knowledge
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- Time of issue:2016-01-16 14:55
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(Summary description)Intheearly1980s,Ningbo,ZhejiangProvincetooktheleadindevelopingmanufacturingprocesses,whichchangedthelonghistoryofusingcastironvalvesinChina.Inthemanufacturingprocess,thesandcastingmoldingprocesswasfir
Process flow and product design of copper valve
(Summary description)Intheearly1980s,Ningbo,ZhejiangProvincetooktheleadindevelopingmanufacturingprocesses,whichchangedthelonghistoryofusingcastironvalvesinChina.Inthemanufacturingprocess,thesandcastingmoldingprocesswasfir
- Categories:Industry Knowledge
- Author:
- Origin:
- Time of issue:2016-01-16 14:55
- Views:
Information
In the early 1980s, Ningbo, Zhejiang Province took the lead in developing manufacturing processes, which changed the long history of using cast iron valves in China. In the manufacturing process, the sand casting molding process was first adopted, and it was changed to the forging process in the early 1990s. Development to the beginning of the 21st century, China has developed into the world's copper valve manufacturing center.
Brass gate valve
Process flow of copper valve
Product design of copper valve
Mold making
Valve casting and forging
(1) Sand foundry casting: The earliest production mode in the valve field. Because the casting method does not have enough pressure, the valves produced by this process are prone to blisters and cause product leakage to induce a series of problems.
(2) Hot forging: The valve body formed by forging will not have trachoma, and the appearance will be more exquisite.
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