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The development prospect of the tool industry
In recent years, three, five years, I have the tools on the market of domestic brands have a very significant development, most of the enterprises has gradually stepped onto the integrated tool product suppliers for the market, the trend of the development of the enterprise culture and the cutting tool specialized also increased, many companies have abandoned traditional "instead of", "conveniently small" model of development, began to shift in the direction of specialization and present their own characteristics, such as, the work focus in the development and production of the gear cutting tools and the han river tool factory specializing complex cutting tool.
Shanghai, zhejiang, jiangsu, hunan, guangzhou, xiamen, a lot of HSS cutting tools manufacturers continue to maintain high speed steel cutter, on the basis of a higher market share, at around carbide cutting tools development production accumulated investment of more than hundreds of millions of yuan, and invest in cemented carbide materials and numerical control handle project. From the very beginning of pilot production line to the production of precision alloy cutting tools industrial park, now the gesac measures are useful has formed annual production of 1 million precision overall carbide cutting tools with 2 million, 2 million pieces of indexable insert and PCB with the micro drill comprehensive scale of production, its products in the aerospace, automotive, tooling, electronics, energy, transportation and other industries widely recognized by customers.
Now and in the field of automobile spline machining turbine wheel groove machining area was a brilliant success, and spline measuring tool products has become a faw Volkswagen, shenyang jinbei, Beijing hyundai, etc. More than 400 cars and parts manufacturers professional supporting enterprise, the wheel groove processed products is also replace imported cutting tools, steam turbine companies recognized.
wuliangye knife once triggered heated debate, one hundred million yuan of money to the cutting tool industry, although due to various reasons, failed to meet the "top three do industry within five years, ten years to do leader" brave, but now the fog "day" products have been batch in aerospace, power generation and other industries. Nowadays, it has developed into a non-standard tool manufacturer with considerable scale, and the concept of cutter national chain grinding has been successfully popularized.
It is understood that the total annual output value of all enterprises in xixia shu industry cluster has reached 1.5 billion yuan. A large number of non-standard tool market demand depends on these private enterprises of xixia shu, which has a lot to ponder about the future of China's cutting tools industry. The development of a market, thanks to the rise of national brands, also benefited from the continuous development of foreign brands in this market, which are complementary to the market. But even in today's economic globalization, the prosperity of a market depends fundamentally on the development and competitiveness of local brands. It is with the rise and development of our national brand that our tool market is booming.
Full understanding of "hard alloy"
Cemented carbide is one or several refractory carbide, tungsten carbide, titanium carbide, etc.) of powder as main ingredients, join as a bonding agent of metal powder, cobalt, nickel, etc.), the alloy made by powder metallurgy method. It is mainly used to manufacture high speed cutting tools and hard and tough material cutting tools, as well as making cold-made molds, gauges and non-impact, vibrating high - wear parts.
The characteristics of cemented carbide
- (1) hardness, abrasion resistance and high hardness of red The hardness of hard alloy can reach 86~ 93HRA, equivalent to 69~ 81HRC. In 900 ~ 1000 ℃ can keep high hardness, and has excellent wear resistance. Compared with high speed tool steel, the cutting speed can be 4~7 times higher than that of high speed tool steel, and the life span is 5~80 times, and the hard material can be machinable as high as 50HRC.
- (2) high strength and elastic modulus The compressive strength of hard alloy is as high as 6000MPa, and the elastic modulus is (4 ~ 7) x 105MPa, which is higher than high speed steel. But its bending strength is lower, generally 1000~ 3000MPa.
- (3) good corrosion resistance and good oxidation resistance It is generally good for the anti - atmospheric, acid and alkali corrosion, not easy to oxidize.
- (4) the linear expansion coefficient is small At work, the shape is stable.
- (5) the forming products are no longer processed and re-ground Because of the hard alloy high hardness and brittleness, so no longer after sintering of powder metallurgy forming for cutting or grinding, realizing the reprocessing, can only use edm, wire cutting, such as electrolytic grinding machining or special grinding wheel grinding. Usually made of hard alloy products, brazing, bonding or mechanical clamping shall be used in the cutter body or mold.
Common cemented carbide
There are three types of hard alloy according to composition and performance characteristics: tungsten-cobalt, tungsten-cobalt, tungsten-titanium tantalum (niobium) type. The most widely used in production are tungsten cobalt and tungsten-cobalt hard alloy.
- (1) tungsten and cobalt carbide The main components are tungsten carbide (WC) and cobalt, and the number of the brand is YG (" hard "and" cobalt "), and the percentage of cobalt content is indicated. For example, YG6 indicates that the cobalt content of tungsten cobalt is 6% and the content of tungsten carbide is 94%.
- (2) tungsten titanium cobalt carbide The main components are tungsten carbide (WC), titanium carbide (TiC) and cobalt, and the number of the brand is YT (" hard "and" titanium "), and the percentage of titanium carbide content is indicated. Such as YT15, the tungsten titanium cobalt with a titanium carbide content of 15%.
- (3) tungsten titanium tantalum (niobium) cemented carbide This kind of hard alloy is also known as universal hard alloy or universal cemented carbide. The main components are tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TaC) or carbonized niobium (NbC) and cobalt. The number is indicated by the number of "YW" (" hard "and" ten thousand ").
Application of hard alloy
- (1) tool material Hard alloy is used as the largest number of tool materials, which can be used for turning tools, milling cutter, planer and drill bits. Among them, tungsten cobalt carbide is suitable for black metal, short cutting and non-metallic processing of non-metallic materials, such as cast iron, casting brass, bakelite, etc. Tungsten-titanium cobalt hard alloy is suitable for long cutting of ferrous metal. In the same kind of alloy, cobalt content is more suitable for rough machining, and less cobalt content is suitable for precision machining. Universal hard alloy is much longer than other hard alloys for difficult machining materials such as stainless steel.
- (2) mould material The hard alloy is mainly used for cold drawing die, cold stamping die, cold extrusion die and other cold mould. Carbide cold heading die under impact or strong impact abrasion working conditions, its universality is for hard alloy has good resistance to impact toughness, fracture toughness, fatigue strength, bending strength and good wear resistance. Usually selected medium, high cobalt and medium, coarse grain alloy plate number, common as YG15C. Generally speaking, the wearability of hard alloy and the relationship of toughness are contradictory: the improvement of wearability will lead to the decrease of toughness, while the improvement of toughness will inevitably lead to the decrease of wear resistance. Therefore, when choosing alloy plate number, it is necessary to meet the specific use requirement according to the processing object and working conditions. If the selected number of the brand is prone to early disintegration and damage in the use, it is advisable to choose a brand with a high toughness; If the selected number of the brand is prone to early wear and damage, it is advisable to choose a brand with a higher hardness and better wear resistance. The following number: YG15C, YG18C, YG20C, YL60, YG22C and YG25C from left to right, lower hardness, less wear resistance and higher toughness; Conversely, the opposite is true.
- (3) measuring tools and wear resistant parts The hard alloy is used for the wear-resisting parts of the gauge, such as the surface inlaying and parts, the precision bearing of grinding machine, the centerless grinding of the guide plate and the guide rod, and the top of the lathe.
Li mingfang and zhao peng, who resigned from the company, were elected
The company's board of supervisors recently received a written resignation report from the employee's representative, Mr. Li mingfang, and Mr. Dai ling jun, who retired from the company and asked to resign from the company's supervisory office. Mr Li mingfang and Mr Dialing are no longer in the company after they resign from the supervisory post of the staff representative. In accordance with the relevant provisions of the rules of procedure of the board of supervisors, on July 21, 2017, in the election, Mr Zhao peng, Mr OuYangJian Mr G. zhang for the company of the eighth worker representatives of the board of supervisors supervisors, July 21 solstice term since 2017, the company from the date of expiration of the eighth of the board of supervisors. The company database of the shares (WeChat ID: istocknews) shows, mou qinghua: male, master. I have been the deputy finance director and finance minister of new hope group and the supervisor of the company. Present company vice President, finance director, new hope finance limited company director.
Zhao peng, male, born in January 1978, han, henan, zhengzhou. Party member, master's degree, accountant. Study and work experience: from September 1996 to July 2000, I studied in northern jiaotong university, majoring in economics. From September 2001 to July 2004, I studied in the central university of finance and economics. From July 2004 to October 2005, junior clerk of finance department of nanchang hard alloy co., LTD. From November 2005 to May 2009, deputy finance manager of nanchang carbide co., LTD. From June 2009 to January 2013, accounting department of finance department of minmetals aluminium co., LTD. From February 2013 to April 2013, accounting department of accounting department of finance department of minmetals holding co., LTD. From May 2013 to February 2015, the general manager assistant and finance director of the company's general manager; From February 2015 to April 2017, deputy general manager and finance director of jianshui xiangshan tungsten industry co., LTD. In April 2017 up to now China Tungsten and Hightech electronic Materials Co., Ltd. Business planning development risk management specialist.
Zhang guangming, male, born in August 1975, han nationality, zigong man in sichuan province, party member, bachelor degree, accountant. Learning experience: from September 1991 to July 1994, the finance and finance department of zigong city university of finance and economics; From January 1995 to June 1997, I majored in accounting at the southwestern university of finance and economics and obtained the diploma. From September 2005 to June 2007, I majored in accounting at southwestern university of finance and economics and obtained my bachelor's degree. Work experience: from July 1994 to February 2003, the finance department of zigong Great Wall tool company, the accounting department of kunming department of marketing; From February 2003 to October 2016, the finance department of the new materials co., LTD. From October 2016 to March 2017, the finance minister of the new materials co., LTD. In March 2017, I am the deputy director of audit supervision department of zigong carbide co., LTD.
Ouyang jian, male, born in July 1961, han nationality, milo man in hunan, Chinese party member, junior college culture, economist. Study and working experience: from September 1979 to July 1981, the analytical chemistry major of changsha metallurgical industry school; From August 1981 to June 1983 working in the supply section of zhuzhou carbide factory; From June 1983 to July 1986, majored in enterprise management in hunan radio and television university; From July 1986 to July 1990, the supply department of zhuzhou carbide factory and the supply and Marketing Department; From July 1990 to May 1991, the supply department of zhuzhou carbide factory supply department; From May 1991 to December 1993, station master of materials recycling station of zhuzhou carbide plant; From December 1993 to May 1994; From May 1994 to July 1996, vice general manager of haizhou company of zhuzhou carbide factory; From July 1996 to April 1999, deputy director of the supply department of zhuzhou carbide factory; From April 1999 to September 2000, party branch secretary and deputy director of the supply department of zhuzhou hard alloy factory; From September 2000 to December 2001, party branch secretary and vice minister of the purchasing department of zhuzhou carbide factory; From December 2001 to December 2005, minister of purchasing department of zhuzhou carbide factory; From December 2005 to October 2006, minister of economic operations of zhuzhou carbide group co., LTD. From October 2006 to December 2016, minister of materials department of zhuzhou carbide group co., LTD., party branch secretary; In December 2016, deputy secretary of the discipline inspection department of zhuzhou carbide group co., LTD., and the secretary of the audit department and party branch secretary.
"Made in China" is known as the national treasure of CNC machine tools
In recent years, China's equipment manufacturing industry developing rapidly, especially heavy nc machine tool, the fastest growing heavy CNC gantry boring and milling machine, heavy ground boring and milling machine, heavy duty vertical and horizontal lathe, annual production and market consumption have been first in the world, one is a national treasure "made in China" is famous in the world.
In the world of machine tools, China is not only big but big. The machine tool output is almost the sum of Germany and Japan, and has been the world's largest for many years.
With the rapid development and maturity of technology, China's heavy machine tools have been fruitful and have successfully developed many of the world's largest CNC machine tools, which are called "national treasure level". China's second heavy machinery group successfully built the world's largest die forging hydraulic press, the 8-ton die forging hydraulic press machine, the 27 meters, 15 meters high, total 42 meters high, 22000 tons of equipment, is China's domestic large C919 aircraft flight test one of the most important contributor to success.
Giant die forging hydraulic press, symbolizes the national strategy of heavy industry power equipment, is to measure a nation's industrial strength and an important symbol of military power, few developed countries in the world. Currently, the world is home to more than 40,000-ton die-forging presses, only China, the United States, Russia and France.
China's 8,000-ton die-forging machine broke the world record of 51 years in the former Soviet union, marking the end of the country's critical mass forgings.
More shockingly, tsinghua university has developed 160000 tons of die forging hydraulic press, because at present our country manufacturing industry is not need so big die forging hydraulic press, once the country needs, can make the figure. 160,000 tonnes is more than twice the 75,000 tonnes in Russia and more than 3.5 times the 45,000 tons in the United States.
Wuhan heavy machine tool group has successfully built the world's largest standard ultra - heavy CNC horizontal machine tool - DL250 type machine tool. The machine is more than 50 meters long, the bed weighs 1,450 tons, the largest rotary diameter is 5 meters, and has the full independent intellectual property rights of major localization equipment. The world's largest spiral pulp has been produced in the world with 106.3 tons of excess weight and 9.1 meters in diameter.
At the same time, the processing precision of this super heavy machine tool is 0.008 mm, about one-tenth of the hair. Such an equal precision can be achieved even if there are not many foreign companies. The success of the equipment will have a great impact on the production of energy generation and ocean-going vessels in China.
It is manufactured by Beijing first machine tool plant production, industrial machine tools is the single output maximum (87 million yuan/units) of super-heavy CNC gantry boring and milling machine, so far the world's largest CNC gantry boring and milling machine.
Known as the "machine machine aircraft carrier" super machine, the total height of 15 meters, the total width of 22 meters, the total length of 39 meters, total weight 900 tons, the steel parts of the basketball court size can be processed into any shape. The low-pressure inner cylinder and the high-pressure outer cylinder of China's megawatt nuclear power plant are made from it.
At present, some of the world's largest super-heavy machine tools are being put into development, which will guide our country into the world heavy machine tool manufacturing power. Shanghai machine tool plant successfully developed the world's largest CNC roll grinder, grinding biggest diameter of 2500 mm, effective grinding workpiece length is 15 meters, maximum grinding workpiece weight of 250 tons, and with independent intellectual property rights of software systems. It marks a new milestone in the extreme manufacturing of China's machine tool factory, which also marks the advancement of China's heavy-duty high-precision CNC machine tools to the world's advanced level.
The world's largest machining diameter propeller machine tool: medium heavy, seven-axis six-linkage machine tool China heavy heavy machine tool co., LTD. Independently developed and successfully developed the world's largest machining diameter seven-axis six-axis propeller processing machine, with the maximum processing of a 10-meter diameter propeller.
Navy submarine mute performance is the core indicators of submarine combat power, long time of the Chinese navy submarine noise is widely criticised, American even threatened, a Chinese submarine clearance of bearing can be detected. The core components of the submarine noise are the propellers at the rear of the submarine, and the production of the seven-axis six-line propeller machine will greatly help the quality of the noise performance of Chinese navy submarine.
The seven-axis six linkage machine tool is the largest and most complicated machine tool in the world. The success of the machine tool indicates that Chinese machine tool enterprises have the strength to compete with the world machine tools in the international market. Citic has successfully developed 18,500 tons of hydraulic presses, which are the largest and most technologically advanced hydraulic presses in the world. The hydraulic press the floor height of 20 meters, 7.5 meters deep, underground moving workbench 5.4 x 13 meters, maximum upsetting force of 18500 tons, the machine weighs more than 4000 tons, and is the world's only one, known as the "free forging a crown of the kingdom of the world". The upper beam of the hydraulic press is successfully cast, 11.95 meters long, 3.8 meters wide and 4.59 meters high, with a total weight of 520 tons. This is the last time the world has organized the most steel water, the heaviest casting tonnage the heaviest steel casting.
Citic heavy industry installed 16 m diameter oversize hob processing equipment, which is currently the world's largest machining diameter and technical performance of the most advanced gear nc processing equipment, the largest processing 16 meters in diameter. And, with China's independent intellectual property rights, fully functional, high precision CNC heavy crankshaft composite machine also in citic heavy industry developed, the Chinese master the heavy Marine crankshaft processing machine tool manufacturing technology, get rid of the large Marine crankshaft before relies heavily on imports. China has become the third country in the world to independently design and manufacture crankshaft processing equipment after Germany and Japan.
Has successfully trial-produced heavy CNC equipment co., LTD., the world's largest vertical milling machine, the machine type 60/550 DMVTM2500 * l - NC NC heavy double column vertical lathe milling machine more than 550 tons gross tonnage, can processing unit with a large diameter of 25 metres components.
Its technical parameters, machining accuracy, the technical level, bearing weight are creating the world's "first", for the machine tool industry is one of the world, representing the highest level national high-grade CNC heavy duty machine tools.
In addition, ziqi has successfully developed the first CNC heavy-duty crankshaft milling machine (also known as "cyclones") in China, successfully processing the first large ship crankshaft of our country. Make China become the world's third after Germany, Japan to independent design, independent manufacturing crankshaft processing equipment, marked the large high-grade numerical control machine tool's capacity for independent innovation in our country has reached world leading level, paving the way for the development of China's large ships. Qiqihar second machine tool group has successfully developed the world's first new five-axis hybrid machine tool - XNZ2430 new large gantry five-axis hybrid machine tool and Asia's largest SKCR165/1200 type CNC fiber winding machine.
At present, foreign countries have a technical blockade on China's large-scale five-axis CNC machine tools, and China needs to spend a large amount of foreign exchange to import such equipment from abroad every year. The development of the machine successfully broke the technological blockade of the west, and provided a strong technical and equipment guarantee for the development of national defense industry in China. In July 2013, dalian koyo technology engineering co., LTD., with independent intellectual property rights and high precision 5 axis vertical machine tool exports Germany for the first time since then, the German company again to dalian koyo bought three sets of high-end CNC machine tools. This is the first time that Chinese companies have sold high-grade numerical control machine tools to western developed countries, which marks the break of the foreign monopoly and technical barriers of China's high-end five-axis CNC machine tools.
Now in China's high-end machine localization has reached more than 70%, even five axis nc machine tool has been successfully exported Germany, also marks the we will no longer be subject to other countries in the field of precision machining. Today, China is not only the world's largest machine tool production and consumption, but also the world's largest exporter of machine tools. Back in the early days after foundation, China's heavy industry is still a blank, let alone have the capacity of production of machine tools, weapons, relies on to buy and imitation, in order to reverse the passive situation, since the founding of the machine tool industry development in our country as a key project.
But multi-axis linkage machine tool technology has been the west confidential, so for many years, we have been developed by thetime, not only the purchase channel is not smooth, and must accept GuoChanShang outside of the so-called "end user access" harsh conditions, the foreign party to obtain the numerical control machine tool end use, usage, such as intelligence, easy to cause leaks. As in recent years the rapid development of China's machine tool, China has become the world's machine tool industry of original structure of bulldozer, the world powers Germany, Japan and other traditional machine tool into the high-end direction apex Angle and specialization.
, of course, we also there is a big gap with foreign countries in the field of machine tools, some of the features most need to rely on foreign countries, this is mainly related to our late on related technologies, but even so, during which the gap is a little narrow.
Believe in China's machine tool industry, one day will also stand on the top of the world like the aerospace engineering and infrastructure projects, and become the world's first-class level!