Fluorine Lined Wafer Butterfly Valve Fluorine Lined Wafer Butterfly Valve,Clamp Butterfly Valve,Tetrafluoride Lined Butterfly Valve,Sanitary Stainless Steel Butterfly Valve Zhejiang Meide Machinery Co.,Ltd , https://www.meidemachinery.com
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The most important part of the bearing is the ferrule of the bearing; the ferrule of the imported bearing is very good; the quality is also very good; then how does the ferrule of the imported bearing come out? /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1. Casting: If the overheating, overheating, and internal cracking of the carbides in the casting process will reduce the resistance and strength of the ferrule, it is necessary to strictly control the processing temperature, circulating heating and post-forging heat dissipation conditions (such as spray cooling). Etc.; especially after the larger types of ferrules are finally forged; the temperature is above 700 °C;
2. Heat treatment: close monitoring of heat treatment equipment is an important work in the workshop.
The reliability of the monitoring equipment. The important temperature control tools such as external watches and thermocouples must be closely monitored; the measurement data should be accurate and reliable, and the errors should be replaced in time; the disease operation is prohibited.
3. Monitoring of the grinding process. The imported bearing ring is not allowed to have grinding burns and grinding cracks; especially the inner ring taper cooperation surface must not have burns. If the ferrule is pickled, it should be fully inspected; Burn products; unsatisfactory repairs or repairs that are severely burned should be voided; ferrules with grinding burns are not allowed to enter the installation process.
4. Marking processing; steel after storage into the ferrule before grinding; each process must be strictly handled; severely distinguish between GCr15 and GCr15SiMn two different raw materials and products.
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Production process of bearing rings
Source: Bearing network time: 2013-03-30