What is the new product development direction of superhard material products in the next few years? Next, we will carefully investigate the following aspects, learn from foreign use information, find out the domestic market demand, and formulate a practical development plan.
For quite a long time in the future, the automobile industry will develop at a relatively high speed as a pillar industry of the national economy. The development of automobile industry depends on the level of automobile equipment and the improvement of processing technology, especially the advanced level of NC machining tools (including cutting tools and abrasives). Efforts to develop cutting tools and abrasives of advanced superhard materials, which are essential for the processing of auto parts, are the needs of the abrasive industry to adapt to the development of the auto industry and promote its own development.
In view of the current situation of China's automobile industry and drawing on the mature experience of developed countries, we should mainly develop: CBN grinding disc for processing piston ring; CBN grinding wheel for high precision and wear-resistant bearing processing (including resin ceramic binder); PCBN tools, grinding tools and honing tools for processing various cast iron parts; Small hole grinding heads for processing various hydraulic parts; Various diamond grinding wheels and jacketed drills for glass processing such as car window glass and car rearview mirror; Diamond grinding wheels for processing plastics, rubber and other non-metallic materials; CPD cutting tools for aluminum alloy parts processing; Diamond dressing rollers for various purposes, etc.
Processing of hard and brittle non-metallic materials
This scope is very wide, and we should still focus on industries closely related to infrastructure construction, such as building materials industry and road traffic facilities. In terms of materials alone, the focus can be on the processing of wear-resistant floor tiles, glass ceramics and so on.
In recent years, the domestic wear-resistant floor tile industry has introduced more than 100 advanced production lines (mainly from Italy, Germany and Japan), and the supporting plate flat grinding roller, grinding wheel, edging wheel and chamfering wheel need to be made in China. This piece of market has broad prospects and is relatively difficult. According to relevant statistics, there are hundreds of floor tile production enterprises in a coastal province alone, and the imported and processed floor tile grinding wheels exceeded 100 million yuan in 1997. There are thousands of enterprises producing floor tiles nationwide, and the output of wall and floor tiles reached 90 million in 1995. The development trend of this industry is that glazed tiles are gradually replaced by wear-resistant floor tiles. Therefore, the processing volume of floor tiles is increasing, and the industry has great potential. Although many diamond products factories have developed grinding wheels for processing floor tiles in recent years, they are not mature enough.
The glass industry should focus on the processing of flat glass for various purposes, because it has a large amount and a wide range. It should focus on breaking through the diamond grinding wheel for flat glass leveling, grinding, chamfering, arc polishing and other processes. In order to achieve the processing efficiency, precision and grinding wheel life specified on the imported automatic production line, people in the industry need to invest great enthusiasm and human capital to make a difference. Lighting glass processing has also made great progress in recent years. The situation of this industry is uneven. There are not only very advanced automatic processing equipment, but also relatively backward manual grinding equipment. Lamps need to process a few pieces of glass, more than 10000 pieces or even more than 100000 pieces. Therefore, diamond processing tools with different uses, different quality levels and different price grades should be developed according to the needs of the market.
Ceramic materials have developed rapidly, from mainly used as living materials to industrial materials, tool materials and engineering materials. The processing of ceramic materials is inseparable from diamond. Although the application of precision ceramics in China has just started, according to the development trend, it will be widely used in the 21st century and an important member of the new material industry. Therefore, we should strive to develop new diamond machining tools to solve the problem of precision ceramic machining based on the machining experience of living ceramics and electronic ceramics.
Wood and plastic products processing
In wood processing and furniture industry, automatic machine tools are widely used to replace the traditional manual operation methods. In addition, wood processing is used to produce waste materials such as sawdust, shavings and short wood, as well as some branches and miscellaneous wood trimmed from forestry resources. After crushing and processing, plastic adhesives are added, and then a series of treatments are carried out to make "recycled materials". The processing of this material is more difficult than log.
Therefore, there are two major needs:
First, automatic processing of wood and plastic products requires the use of many types of cemented carbide or high-speed steel cutting tools. CBN series tools for woodworking and plastic grinding are often deformed due to their poor heat conductivity. Therefore, CBN series tools for woodworking and plastic grinding are easy to be replaced. There are 97 shapes and 173 specifications (including size and particle size) of diamond grinding wheel for woodworking cutting tools, and 20 shapes and 28 specifications of cutting tools grinding wheel for plastic products. Many domestic wood and plastic industries have introduced or imitated advanced production lines, and tool manufacturers have put forward many orders for grinding wheels.
Second, diamond or CBN composite polycrystalline tools for woodworking and plastic industry have also been put on the agenda. In particular, PCD cutting tools for wood floor strip processing have been used in China (mainly in Yunnan, Sichuan and Northeast China). Therefore, it is urgent to develop PCD tools for forest product processing.
Trimming tool development
Trimming tools are basically missing products in the industry. In the early stage of large-scale production, several factories produced diamond trimming pens and other products. At present, except for some units producing trimming rollers, the rest of the trimming tools industry is almost blank.
Open the samples of foreign products, you can see that almost all superhard material products enterprises produce diamond dressing tools. Taking winter company as an example, the company produces two types of multi-point and single point trimming tools, including four varieties of fliese, Igel, pro dress and rondist, with 17 models. There are three types of single point, one way and profile, with 23 models. It is suitable for various purposes and grinding methods, including shaping and dressing of grinding tools on grinder.
The reason why domestic dressing tools can not form a product series in the industry may be closely related to our failure to develop natural diamond products. In addition, the low degree of automation of domestic grinding machines is also one of the reasons. Many users buy large diamond and braze it into dressing tools (single grain), which may not be a problem for general grinding machines, but certainly not for automatic processing equipment. When selecting diamond for making dressing tools, natural diamond, synthetic single crystal or polycrystalline diamond, or even composite polycrystalline diamond can be used according to different purposes. Therefore, it is fully available in the industry.
Application and development of polycrystalline products
According to the data provided by Ge in 1994, in 1993, the annual consumption of PCD, PCBN cutting tools, PCD wire drawing dies and PCD mine drilling tools in the world superhard abrasive products market reached US $603 million, accounting for 18.2% of the total product consumption, which is enough to explain its large market capacity and broad development prospects. In recent years, domestic PCD and PCBN products have made great development, but the market share is still very small. The main reasons are: the variety is single, which is difficult to adapt to the changing needs of the market; Domestic equipment cannot adapt to the use of such tools; Lack of communication and cooperation between the supplier and the demander, and the level of understanding lags behind; There are still some problems in the processing of composite polycrystalline tools, especially grinding.
The development of composite polycrystalline tools can follow the path of "easy first and then difficult". For example, PCD / PCBN turning tools for processing a variety of materials can be developed first. Because the shape of turning tools is relatively simple, domestic lathes (including ordinary lathes and CNC lathes) are basically suitable for Using PCD / PCBN turning tools. The processing objects are mainly cast iron, hardened steel, aluminum alloy, carbon fiber and other materials, which are not difficult to process and the processing effect is very significant, so they are easy to be accepted by users. The tools for mining and oil and gas drilling require PCD to have high quality, great difficulty in tool making, high technical content and high price level. It is a high-tech product. Therefore, it is necessary to work hard on the quality level of PCD manufacturing. Once the quality has made a breakthrough, it can be put into tool development.
In the 21st century, we should strengthen our confidence, seize the opportunity, grasp the direction, and strive to develop, so as to make the industry from large to strong, make China truly become a major producer and exporter of superhard abrasive products, and create brilliant achievements for the development of world economy and scientific and technological progress.
Diamond tools, diamond grinding wheel, diamond micro powder, five axis linkage grinding wheel, Guangzhou Jinrui: http://www.jrdiamondtools.com/