Innovation never stops: Sumitomo Electric develops new cast iron materials

According to relevant media reports, Sumitomo Electric Industries has developed a new CBN material “SUMIBORON BN7000” with high-volume cubic boron nitride (CBN) content, machinable cast iron and sintered alloys, which was launched recently. The higher the CBN content of the CBN sintered body used to process cast iron and sintered alloy, the higher the hardness of the tool. The company further increased the sintering pressure based on the original 50,000 rpm and established a production technology capable of sintering solidified CBN particles at a higher density. The amount of binder material has been successfully reduced. Moreover, for adhesive materials that bond CBN particles to each other, the company has also developed new materials that can exert stronger adhesion. With these applications, SUMIBORON BN7000 can achieve 1.5 times the defect resistance of the original product. It also brought new life to China's cast iron industry.

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