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YG8 Cemented Carbide Wear-Resistant Grate Bar for Coal Chemical Wastewater Mechanical Bar

Publication date:

2026-08-19

Author:

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YG8 Cemented Carbide Wear-Resistant Grate Bar for Coal Chemical Wastewater Mechanical Bar

Mechanical grid, as the primary component of sewage pretreatment system, physically intercepts solid impurities through fixed grid bars or rotating rake teeth to ensure the normal operation of subsequent treatment facilities. As an energy and heavy chemical industry base, the wastewater generated by coal mining, coking, and coal chemical industries often contains a large amount of coal powder, tar, and acidic substances, which pose a severe challenge to the corrosion resistance and wear resistance of mechanical grilles. For acidic water quality, the manufacturing material of mechanical grilles should be acid resistant stainless steel (such as 904L or super austenitic stainless steel) or lined with PTFE coating. At the same time, the high hardness of coal powder particles accelerates the wear of rake teeth and bars, so it is necessary to use hard alloy welding processes such as tungsten carbide for surface strengthening, or to use hard alloy bars. In terms of structural design, mechanical grilles often come with bottom flushing nozzles to prevent coal powder accumulation and blockage. Due to the easy adhesion of tar substances, the scraper needs to be designed with elastic material and regularly cleaned with hot steam.

Non standard product attributes of hard alloy （cemented carbide）:
1. Using cold pressing and vacuum sintering processes to produce non-standard shaped hard alloy, the product performance is stable and the quality is reliable.
2. With distinctive production control and testing technology, the internal stress of producing irregular products is controlled, effectively avoiding cracking during online cutting of products and keeping away from defects such as pores and cracks.
3. Non destructive ultrasonic testing, no sand holes, no pores, high material density; High strength, impact resistance, high wear resistance, long service life
4. Classification of non-standard shaped hard alloy products:
Hard alloy non-standard shaped blades, hard alloy non-standard shaped molds, hard alloy non-standard shaped wear-resistant parts, etc.
5. Size and specifications: Production based on customer provided samples or drawings

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