Abstract Diamond micropowder is a new type of superhard superfine abrasive formed by special processing of synthetic diamond single crystal. It is an ideal raw material for grinding and polishing high-hardness materials such as cemented carbide, ceramics, gemstones and optical glass. Diamond products are made of diamond materials...
Diamond micropowder is a new type of superhard superfine abrasive formed by special processing of synthetic diamond single crystal. It is an ideal raw material for grinding and polishing high hardness materials such as cemented carbide, ceramics, gemstones and optical glass. Diamond products are tools and components made of diamond materials and are widely used. Under the weak economic environment, what is the development status of the domestic diamond micropowder industry? The author has visited the insiders in the industry and summarized the development of the industry as follows:
First, the production process of diamond micropowder is constantly improving
First of all, look at the crushing process. Ball mill crushing diamond powder is a relatively mature process, but the disadvantage is that the production efficiency is low. In recent years, more and more micro-powder manufacturers have adopted jet mills, making it easier to obtain micron-sized and sub-micron ultra-fine powders. In addition, look at the grading process, the traditional grading process is to use the sedimentation method, by manual operation, using buckets, rods, siphons, alarm clocks and other equipment. The disadvantage is that the technical requirements of the production workers are high, the production efficiency is low, and the product stability is not good. Therefore, the automatic micro-powder automatic sorting machine consists of automatic mixing system, automatic pumping system, water circulation system and computer control system, which is more and more accepted by customers, which greatly improves the production efficiency of diamond micropowder.
Second, the price of diamond micropowder continues to decline
According to the data of “City of Diamond Powderâ€, the annual output of diamond single crystal in the county reached 1.5 billion carats, the annual output of fine powder reached 4.7 billion carats, and 10 million pieces of diamond products (sets), of which diamond powder Production and exports account for 70% and 50% of the national market share, respectively. In addition, Pingxiang's annual production of 400 million carats of diamond micro-powder project has been launched last year. This year, Hunan Shengsheng super-hard materials are also planned to produce 120 million carats of diamond micro-powder.
It can be seen that the trend of industry consolidation is intensifying, products are in a situation of severe supply surplus, and the survival of small-scale enterprises will be more difficult. Therefore, the price of diamond micropowder has been falling all the way, falling from the original price of 1 yuan per carat. At present, the cheapest diamond micropowder has fallen below 0.1 yuan, but it has not yet reached the bottom.
Third, the application trend of diamond micropowder industry
1. First look at the ceramic industry, the polishing of ceramic tiles is one of the largest applications of diamond micropowder. However, with the downward trend of real estate, the emergence of ceramic collapse. Under the nesting, the use of diamond powder in the industry is also falling, which is also the main reason for the decline of diamond powder.
2. Look again, for the polishing of the emerging LED sapphire diamond powder. With the gradual promotion of domestic LED applications, this part of the market is in a rising period, and the demand is relatively high-end, but the overall consumption is relatively small, and the overall impact on the diamond micro-powder industry is small.
3. In addition, with the update of solar photovoltaic wafer cutting technology, diamond cutting lines have gradually found a place in place of traditional silicon carbide micropowder. Coupled with the country's support for the photovoltaic industry, the application of diamond micropowder in this field is a growing trend.
Other traditional applications of diamond micropowder, such as the texture processing of glass or aluminum-based hard disks, the polishing of magnetic metal grinding tools, etc., are not optimistic in the downturn of the environment, in addition, coupled with alumina polishing powder, cerium oxide The impact of alternative products such as polishing powder, diamond micropowder as a polishing material is also more difficult. (Thanks to Mr. Wang Zhanxi, the former president of the Diamond Association of Yucheng County, and Mr. Zhang Mingfeng, the general manager of Henan Hengxin Superhard Materials Co., Ltd. for their contribution to this article!)
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