Perhaps you've seen black or amber cubic boron nitride (CBN), but have you ever come across golden brown CBN? In the superhard materials industry, producing golden CBN is quite rare. However, in Henan, China, a leading superhard material company, Zhengzhou Zhongbo Superhard Materials Co., Ltd., has managed to do just that. Recently, Liu Jinchang, General Manager of China Superhard Materials Network, visited Zhongbo Superhard to learn more about their innovative work.
Zhou Chaoxin, General Manager of Zhengzhou Zhongbo Superhard Materials Co., Ltd., welcomed the visit. The company's new factory is located in the Zhengzhou Abrasives Industrial Park, within the Wuji County Industrial Cluster in Jiaozuo, Henan. With a total investment of 160 million yuan and a planned area of 100 mu, the company specializes in the production and sales of cubic boron nitride and its related products.
Zhou Chaoxin has been involved in the superhard materials industry since 1991. He once worked alongside renowned experts like Wang Guangzu and Wang Qinsheng, and later became a catalyst researcher. His contributions helped define the positioning of cubic boron nitride products. Over 24 years of research and development, he has published numerous academic papers on topics such as "Major Single Crystal Cubic Boron Nitride Manufacturing," "Golden Yellow Cubic Boron Nitride Research Method," and "High Oxygen Lower Catalyst Research."
During his research into CBN catalysts, Zhou also explored lithium iron phosphate battery materials and achieved notable success. In 2013, at an exhibition in Beijing, he met a partner who was developing lithium iron phosphate. Although the partner proposed collaboration, Zhou emphasized that while lithium iron phosphate is popular, its technical content is relatively low. He believed that CBN, with its high technological value, holds greater long-term potential.
Inspired by this vision, Zhou and his partners focused on producing CBN as a core strategic goal. They initially imported PCBN polycrystalline composite film technology from abroad, which showed promising results. However, they soon realized that relying on external suppliers would not ensure consistent quality. This led them to take the next step: producing CBN themselves, followed by further product development.
Zhou’s approach to both research and production is methodical and scientific. At Zhongbo, the workshop layout is well-organized, with efficient production lines and strategically placed equipment. The company has established a dedicated R&D headquarters and a quality inspection center, equipped with advanced instruments such as a shape analyzer, TTI test equipment, and a laser particle size analyzer—ensuring stable and high-quality output.
Looking ahead, the company plans to build 45 presses for medium-boron super-hard testing. Given the differences between CBN and diamond production, they will run four presses in advance to train personnel and prepare for future expansion. Their goal is to steadily improve infrastructure and prioritize product quality in every stage of development.
Zhengzhou Zhongbo Superhard Materials Co., Ltd. is quickly becoming a rising star in the CBN industry. As one of the few companies capable of producing golden CBN, it represents a significant advancement in superhard materials. With its commitment to innovation and quality, the company is poised for continued growth and influence in the global market.
Liu Jinchang, General Manager of China Superhard Materials Network, took a group photo with Zhou Chaoxin, symbolizing the growing collaboration and mutual respect between industry leaders.
Cubic boron nitride is a cutting-edge material that emerged after synthetic diamond. It boasts high hardness, thermal stability, chemical inertness, and excellent infrared transmission properties. Its hardness is second only to diamond, but it offers superior thermal stability and chemical resistance. These characteristics make it ideal for grinding difficult-to-machine materials, improving efficiency, and enhancing surface quality. Its application has revolutionized metal processing and marked a major leap in grinding technology. Today, it is widely used in high-tech industries such as aerospace, automotive, military, wind power, and metallurgy, significantly advancing industrial processes compared to traditional methods.
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