Super-hard materials products must also follow the "three-oriented" development path

The “three-in-one” development of diamond products refers to the serialization, diversification and specialization of diamond product varieties, which is an important manifestation of technological development strength. For example, the “three-in-one” development work of GECo and De Beers Co products has achieved remarkable results, which are recognized by the world. In 1992, De Beers Co synthesized the world's largest industrial grade single crystal diamond, weighing 38.40 carats. In the same year, the company launched three new products, including the SDA2000 high-strength series, the SDA “D” medium-strength series and the MDNOcrystal single-crystal diamond series with a particle size of 1mm or more. GECo, once a leader in single crystal synthesis, introduced a new MBS-900 high-strength series in 1993. Completely replace the previous MBS - 70 series. Recently, two new high-quality MBS-900 series coated diamond products have been introduced to improve the performance of the tool during cutting and drilling, thus solving the problem of traditional crystal holding knife weakening and oxidation. Diamond and cubic boron nitride products in western countries are broadly divided into four categories: low, medium and high grades and special products. Based on four categories, special grades of special grades are derived, and the development trend follows coarse particles. In the high-grade direction, almost one GECo per year, and De Beers Co has 1.5 new products to market. At present, De Beers Co can supply a large number of diamonds with at least 5 varieties and 35 grades, and cubic boron nitride has at least 3 varieties and 7 grades. It is worth noting that the company's diamond SDA for sawing has been developed into SDA standard series, SDA "+" series, SDA "D" series, SDA "S" series and SDA2000 series, and 17 kinds of 5 SDA series products. The grade of high-grade diamond is suitable for many types of sawing and processing of building materials and stone with various processing difficulties. The company's cubic boron nitride products have ABN2000 series, ABN3000 series, ABN6000 series a total of 7 brands. There are also diamond micropowder (MDA and CDA micropowder) and ABN micropowder. According to the recent US GECo sample, it can be divided into at least 5 varieties and 27 grades. Among them, the diamond MBS series for high-grade sawing and drilling has 8 grades, the MBG series of metal binders has 4 grades, resin and ceramics. The RVD series has 5 grades for the binder, 8 grades for the cubic boron nitride, and 300 series micropowder for the metal bond and a standard series of powder for the resin binder. In addition, China's current GE6405-6403 standard lists four brands of 13 varieties, which is already ahead of the game. At present, RVD and MBD grade diamonds are still available in large quantities. According to the statistics of the "China Abrasives Yearbook", before 1991, China's synthetic diamond products were mainly RVD and MBD4, MBD6, accounting for 90%. Since 1992, major manufacturers have been working hard to develop saw-grade diamonds, which has doubled the proportion of MBD8-MBD25 grade products, accounting for about 20%. It is not difficult to see from the above that China's super-hard materials products lag behind foreign countries in terms of “three-oriented”. We believe that in order to adapt to various purposes, we need to “three-dimensionalize” and enhance the competitiveness of the international market. We also need to “three-in-one”, and by implementing the “three-in-one” of products, we can promote synthetic technology, sorting technology, and even comprehensive technology of detection technology. Develop and improve. For China's synthetic diamonds can have certain advantages in the fierce market international competition, we must attach great importance to the development of product varieties to serialization, diversification and specialization.

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