White Aluminum Oxide 220 Grit Manufacturers China

In recent years, with the continuous improvement of the materials being grinded, some new brown fused alumina price requirements and new topics have been put forward. Only through the research and improvement of the grinding performance of abrasive tools, can we meet the processing requirements of new aluminum oxide abrasive materials.

White Aluminum Oxide 220 Grit Manufacturers China MOQ: 1 Ton! 19 Years Experience White Aluminum Oxide Manufacturer, 35,000m² Workshop Area, Free Samples, Fast Delivery!

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Abrasives, black corundum commonly known as "industrial teeth", are widely used in machining, military, civil and other fields. In order to solve this problem, our company provides a kind of production process of calcined brown corundum abrasive, in order to overcome the existing technology that the aluminum oxide grit medium temperature calcined. In the second step, the heat preservation belt is calcined at 1250-1280 ℃ for 3 hours.

Among them, the medium temperature calcined Abrasives can not meet the grinding of white fused alumina materials with Rockwell hardness greater than 60 degrees, while the high temperature calcined Abrasives above 1350 degrees must be subject to secondary crushing. Secondary crushing not only causes environmental pollution, but also causes dark cracks of abrasives due to high-strength crushing, which leads to the lack of synthetic corundum wear resistance and safety.

Abrasives can not meet the grinding of silicon carbide abrasive materials with Rockwell hardness greater than 60 degrees, the high temperature calcined abrasives are calcined to form plates, the secondary crushing brings environmental pollution, the dark cracks caused by the high-strength crushing of the abrasives, and the emery abrasive wear resistance and safety are reduced Insufficient. In the second step, the temperature rise zone is 200-1250 ℃, and the roasting time is 5 hours.

the white aluminum oxide are respectively loaded into silicon carbide burners according to the particle size, and then enter the tunnel kiln for calcination, the calcination temperature is from 200-800 ℃ for 2-4 hours, and then the kiln car is pushed out of the tunnel kiln and naturally cooled to normal temperature, and then enter the garnet abrasive blower dry cleaner for screening, and re loaded into silicon carbide burners for burning.

After loading the above firing bowl into the tunnel kiln for secondary calcination, the green silicon carbide process is as follows: temperature rise zone 200-1250 ℃, calcination for 4-6 hours; heat preservation zone 1250-1280 ℃, calcination for 2-4 hours; cooling zone 1280-100 ℃, 9-11 hours, exit kiln cooling to normal temperature, screening and garnet abrasive price packaging to obtain the finished product. In the first step, the calcination temperature is from 200 to 800 ℃ for 3 hours.

At present, white corundum medium temperature calcined abrasive (900-1000 ℃) and high temperature calcined abrasive (1350-1400 ℃) are commonly used to improve the abrasive performance in the industry. the toughness and sharpness of the abrasives have been greatly improved; The production process of calcining brown aluminum oxide 70 grit adopts the following technical scheme. In the second step, the cooling belt is 1280-100 ℃ for 10 hours. 

The above calcined black silicon carbide have the following characteristics: the calcined abrasives are loose and do not form a plate, which completely eliminates the internal stress and dark cracks caused by quenching and mechanical crushing in the production process of corundum; including the following steps: the crystal image of the glass bead blasting media suppliers before calcination is columnar and rough short.