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The rapid development of aerospace industry , high-performance tool development space is huge(3)

Core Tip: Today, the development of domestic aerospace tools similar to other industries , if there are existing tools on the market can not solve the processing problems , especially in the field of aerospace products encountered in the processing of titanium alloy , aluminum Magnesium alloy and other difficult to process materials and composite materials processing problems , the need for tool suppliers and users in close cooperation , through the joint development , try to develop a special tool . At the same time , tool manufacturers in the product-oriented market before , are a lot of experiments , try to ensure that users meet the processing needs of the various processes.

1. Tool types for typical parts of aerospace manufacturing

Aerospace components not only use a lot of new structures , new technologies and new materials , but also complex parts configuration , poor rigidity , these factors to make the engine and other parts with the mechanical processing must use a large number of high-performance standard tools and special tools for processing.

At present , the engine disk parts , shaft parts , casing parts processing outsourcing of high-performance carbide standard tool and carbide non-standard tool ratio . Typical small and medium-sized components , leaf parts , such as the standard tool-based . In the actual processing of the choice of the main tool to consider the following factors : the workpiece material , the workpiece shape , processing requirements , processing machine tools , system rigidity , surface quality and technical requirements . Take turbine casing parts as an example , from the workpiece material analysis , deformation of high temperature alloys , casting high temperature alloys and other difficult to use a large number of materials . These difficult to process materials , small thermal conductivity , than the strength , high cutting temperature , easy to produce hardening . Cutting tool wears fast , tool life is short , tool consumption , and therefore must be a reasonable choice of tool geometry angle . From the workpiece structure point of view , the wall is thin , poor rigidity , difficult to process.

When machining parts raised parts , the tool system is easy to interfere with parts and fixtures . Therefore , the tool path must be optimized , such as milling milling instead of side milling , empty travel fast knife , optimize the position of the knife , the use of spiral interpolation and other means of milling . From the choice of machine tools , the turbine casing needs to be processed on a high-power machining center . From the processing process analysis , the casing needs to be rough , semi-finishing , finishing . In order to save the tool costs , in the manufacture of such parts , rough processing can be used high-performance ceramic cutter , semi-finishing and finishing using standard carbide cutting tools and non-standard high-performance special tool , which can significantly improve production efficiency The From the processing economy , the tool configuration program needs to be improved , as far as possible using the latest tool manufacturers R & D products.

2. Tool materials commonly used in aerospace manufacturing

With the aerospace industry , such as titanium alloy , high temperature alloys and other difficult to use a wide range of materials , how to correctly choose , the rational use of cutting tools for high-quality cutting has become a very important industry topics . With the workpiece materials and tool materials , structures and other mutual promotion , aerospace manufacturing industry to continue to develop , it can be said that the continuous development of the tool is the aerospace manufacturing industry continue to develop the driving force.

At present , the aerospace industry widely used tool materials are the following categories : tool steel (carbon tool steel , alloy tool steel , high speed steel ) , carbide , ceramic and superHeated tool materials . Among them , the largest proportion of carbide cutting tools , aircraft manufacturing is the leading tool , a wide range of applications . Compared with the cemented carbide , the ceramic material has higher hardness , hot hardness and abrasion resistance , and the chemical stability , oxidation resistance are better than the cemented carbide , therefore , the ceramic tool has become the development of the aviation industry tool A mainstream.

In the aerospace materials processing process , the groove processing and hole processing is difficult to process . Like the engine disk parts , shaft parts , casing parts processing tool processing requirements are very high , therefore , in such parts processing high-performance carbide standard tool and carbide non-standard tool use is very large The In the actual processing of the choice of the tool should consider the following factors : the workpiece material , the workpiece shape , processing requirements , processing machine tools , system rigidity , surface quality and technical requirements.

Take the turbine casing parts as an example , from the workpiece material analysis , deformation of high-temperature alloys , casting high-temperature alloys and other difficult to use a large number of materials , these difficult materials , thermal conductivity coefficient is small , high strength , high cutting temperature , easy to produce hardening , Tool wear fast , tool life is short , tool consumption , and therefore must be a reasonable choice of tool geometry.

From the point of view of the workpiece structure , the tool system is easy to interfere with the parts and fixtures when the wall is thin , the rigidity is poor , it is difficult to process and the parts of the parts are machined . Therefore , the tool path must be optimized such as milling milling instead of side milling and empty stroke Fast knife , optimize the position of the knife , the use of spiral interpolation , etc . milling.

From the processing process analysis , the casing needs to be rough , semi-finishing , finishing , in order to save the tool costs , in the manufacture of such parts , rough processing can be used high-performance ceramic cutter , semi-finishing and finishing The use of standard carbide cutting tools and non-standard high-performance special tools , which can significantly to improve production efficiency.

From the processing economy , the tool configuration program needs to be improved , as far as possible using the latest tool manufacturers R & D products . In the aviation manufacturing industry , the proportion of carbide cutting tools is the largest . Carbide tool for the aviation manufacturing is the leading tool , the scope of application is quite wide , in the NC tool material dominated . Carbide has become the main tool material , so that the cutting process to achieve the transition to the carbide age , due to different grades of carbide characteristics of different characteristics , and therefore its scope of application is also different . Carbide can be used not only to manufacture a variety of machines can be translatable tool , and can create a whole type of end mills , reamers , taps and drill bits . Carbide cutting tools is divided into ordinary hard alloy , coated carbide , ultrafine particles of cemented carbide , carbon (nitrogen ) titanium-based cemented carbide.

YT-type cemented carbide with YG class and YW class most of the excellent performance in the aerospace manufacturing industry is more widely used . Coated carbide has a higher hardness than the matrix , wear resistance , heat resistance , widely used . Ultrafine particles Carbide can be used in a wide range of intermittent cutting . Carbon (nitrogen ) titanium-based cemented carbide is mainly used for the continuous surface finishing and semi-finishing of steel parts.

At present , China's ceramic tool application is still in its infancy , the actual application of the development of slower . Ceramic cutting tools is mainly used for hard alloy cutting tools difficult to cut the workpiece rough . Aerospace manufacturing industry to promote the use of ceramic tools for a long time , in the ceramic tool geometric parameters , cutting the amount of use and technology need to accumulate experience . Ceramic materials Compared with cemented carbide , ceramic materials have higher hardness , heat and abrasion resistance . Ceramic tool chemical stability , antioxidant capacity are better than carbide , very suitable for dry continuous high-speed cutting high-temperature alloys , hardened just , bearing steel , high strength steel and other difficult to process materials . Aero engines in the application of many high-temperature alloys , shaft parts more , it is the ceramic tool to play its advantages . To achieve efficient processing , to replace some of the ceramic cutting tool carbide tool is completely feasible . Ceramic tool is not a universal tool , only the correct use in order to give full play to its superiority.

In view of the characteristics of ceramic cutting tools , the selection must pay attention to three aspects : ① to choose a good system rigidity , can effectively prevent the damage to the tool vibration , improve tool life . ② to prevent the impact of parts on the tool . For high hardness and irregular shape of the rough , should be cut and cut out at the first chamfering and then cutting . ③ to optimize the geometric parameters of the tool , the ceramic tool often used zero angle or negative front angle cutting . We have to fully grasp the performance of the workpiece material , based on the appropriate measures to make cutting to achieve high quality , high efficiency , low cost.

China Machine Tool Industry Association Superhard Materials Branch of the fifth executive director (enlarged) meeting held

May 15, Xi'an breeze slowly, cool and pleasant. China Machine Tool Industry Association Superhard Materials Branch of the fifth executive director (expansion) meeting in the opening of the second floor of the hotel is open on the second floor of Kaiyuan Hall. Zhengzhou Abrasive Grinding Research Institute Co., Ltd., Zhongnan Diamond Co., Ltd., Henan Yellow River Whirlwind Co., Ltd., Guangdong Bailang New Material Co., Ltd., Zhengzhou New Material Industrial Park, Zhengzhou Huajing Diamond Co., Ltd., Shijiazhuang Bo Deep Tools Group Co., Ltd., Fu Nike Superhard Materials Co., Ltd., Henan University of Technology, Zhengzhou Xinya Composite Superhard Materials Co., Ltd., Shenzhen Changxing Technology Co., Ltd., Henan Huifeng Diamond Co., Ltd., Henan Bo Rui new materials Ltd., Fangcheng superhard materials industrial park from the national superharming industry more than 150 industry experts, business representatives attended the meeting, the meeting by the China Machine Tool Industry Association Superhard Materials Branch Acting Secretary-General Sun Zhao Da hosted.

he meeting first by the superHeated materials branch chairman Qiu Lihua speech . On behalf of the Association , she extended a warm welcome and sincere gratitude to all of you for your participation and announced that we would like to announce the proposal of the Chairman of the Superhard Materials Subcommittee and the Secretary General to change the meeting adopted by the Standing Committee of the Council on May 14th . As a result of the work to mobilize , the director of the superHeated materials branch changed from Qiu Lihua to Yan Ning , Zhao Bo no longer served as secretary general , served by the acting secretary-general by Sun Zhaoda , presided over the work of the Secretariat . She said : I would like to thank the industry and enterprises to the Association for three years to serve the industry , service enterprises work concept practice and tolerance of the work , expect the association work in a more vibrant , dynamic , passionate young people who develop better , Look forward to your industry colleagues and keep in mind the development mission , to join hands in creating a better future.

Vice President of the Superhard Materials Branch Yan Ning first thanked the Council for its trust and expressed its high respect for the hard work and selfless dedication of the predecessors over the years and expressed determination and confidence to provoke the burden and failed to live up to the trust of the industry . In the future , we will work with the Council and the Secretariat to focus on the concrete work from the service enterprises and create the environment with a full and enthusiastic focus . We will create a broader future of the development of the industry based on long-term , cooperative innovation , gathering wisdom and energy.

Subsequently , the Secretary-General of the Superhard Materials Branch , Sun Zhaoda , informed the General Assembly of the spirit of the meeting of the General Assembly and reported on the summary of the work of the club in 2016 and the 2017 works to plan . Through the organization of industry and enterprises to participate in China International Machine Tool Exhibition , held industry conferences , lists the industry highlights and other aspects of the work of 2016 conducted a comprehensive and detailed interpretation , and through the three mill exhibition preparation , technical appraisal , editing and publishing " Industrial Yearbook " and other aspects of the 2017 Association work to plan were introduced , and has completed the work of the industry enterprises were reported.

Followed by the superHeated materials branch director Qiu Lihua made " briefing industry 2016 economic operation " will be the morning meeting to a climax . The comprehensive introduction to the 2016 superHeated materials industry in China's economy into the new normal since the third year of the industry status and development trend . For some industry enterprises in the past year , some of the exploration , the main product development , import and export data analysis summed up the gap between industry and foreign enterprises , listed industry highlights such as industry enterprises to accelerate the pace of listing , new products , new applications become profit growth , Automation , intelligent drive industry development analysis industry trends . The economic development of the machinery industry was forecasted . The reform of the supply side to deepen the year , the economic operation of the challenges to serious policy measures to implement the year , a lot of good opportunities for the industry to bring new opportunities and new challenges . This paper analyzes the existing problems such as the actual ability (market development , scientific research conditions , manufacturing ability and talent team ) existing in the transformation and upgrading and the real market demand and future development demand , and encourages enterprises to take active measures to deal with the market changes , Hope that more enterprises from the extensive development of large-scale growth to the quality and efficiency of intensive growth , growth momentum driven by factors and investment-driven innovation to China's super-hard materials industry by the big and stronger to lay the cornerstone.

Follow by a brilliant feature by the Yanshan University Professor Wang Mingzhi presided over . Xi'an Jiaotong University Professor Wang Hongxing " diamond semiconductor and its electronic devices in the new progress " , Beijing Guorui Technology Co , Ltd . General Manager Ge Puheng " precision grinding materials in the electronics industry , " Dalian University of Technology Professor Gao Hang " based on diamond super Hard tool composite materials high-quality , efficient processing technology and application " , Jilin University Professor Li Hongdong " nano-diamond in a number of areas of basic and applied research " , Shenzhen Sester Technology Co , Ltd . General Manager Zhang Xinghua " abrasive enterprise large data ages " The theme of the report attracted the high praise of representatives of the participating enterprises.

China's carbide cutting tool development needs to be further improved

China has become the world's most development potential for the tool market , and many multinational tool groups is also post-crisis era of development strategy , without exception , to expand the sales of tools in China as the first choice , the Asia-Pacific headquarters of enterprises , research and development Centers , training centers , logistics centers , etc . have settled in China , so as to China as the center of radiation in Asia , more direct and convenient to serve customers , to better meet the special needs of customers in the Asia-Pacific region . International Mold and Hardware Plastic Industry Supplier Association analysis , the reason why the Chinese market will be so much attention , mainly due to the share of China's market share in its global market share is growing.

At present , China's cutting tool enterprises through continuous learning and strategic planning , has accounted for 50% of the market share , but the enterprise in the development process or highlights a few fatal problems , if attention is not enough , improperly handled , will be serious Affecting the development of enterprises and forward . At this stage , carbide cutting tools for he developed countries accounted for the dominant position of the type of tool , the proportion of up to 70% . While high-speed steel cutting tools is being 1% to 2% per year rate of reduction , the proportion has dropped to below 30% . At the same time , carbide cutting tools for China has also become the main tool for processing enterprises , is widely used in automobile and parts production , mold manufacturing , aerospace and other heavy industry , but China's tool enterprises are blindly , Production of high-speed steel knife and some low-grade standard tool , did not take into account the market saturation and business needs , and ultimately with high value-added , high-tech content in the high-end tool market " hand over " to foreign companies.

Data show that China's current annual sales of cutting tools are about 14.5 billion yuan , of which the proportion of carbide cutting tools less than 25% , but the domestic manufacturing needs of carbide cutting tools have occupied more than 50% of the tool , which Blind production has been seriously unable to meet the domestic manufacturing industry on the growing demand for carbide cutting tools , thus forming a high-end market in a vacuum state , and ultimately occupied by foreign companies . In 2007 , China's production of 16,500 tons of cemented carbide , there is 4,500 tons for cutting tool production , the number and Japan quite . But the value of the tool after the only 800 million U.S. dollars , far less than Japan's 2.5 billion U#S# dollars , which fully shows that the overall level of domestic carbide cutting tools and foreign production is still a considerable gap . Therefore , in the domestic enterprises can not meet the needs of the market under the premise of the manufacturing needs will have to rely on a large number of imports to solve.

Major foreign investors in China in the high-end tool market sales growth rate of 30%, has exceeded the average annual growth level of domestic cutting tools. In the 150th anniversary of the establishment of the Sandvik Group, in order to celebrate this festival, and continue to inherit Sandvik in the centuries of personnel training, Sandvik's world's first cutting tool brand - Sandvik Coromant to " Witnessed the wonderful, to meet the future "as the theme, from nine cities nationwide colleges and universities, invited 150 mechanical or numerical control professional students to participate in its Guangzhou, Shanghai, Beijing, Wuhan four held at the summer camp activities, Encourage young students to join the machine processing industry, to promote China's manufacturing transformation and upgrading to lay a solid foundation.

At the end of the Guangzhou station, Shanghai station and Beijing station summer camp activities, from the Guangzhou Electrical and Mechanical Technician College, Shanghai Jiaotong University, Beijing University of Aeronautics and Astronautics and other 18 institutions of nearly 120 teachers and students visited the modern mechanical processing workshops and key colleges and universities Laboratory, and listen carefully to the yellow engineers on the cutting tool technology application lectures, carefully observe the modern milling art parts processing live demonstration, personally involved in the typical carbide cutting tool assembly and disassembly competition, close, all-round feel the world's leading Of mechanical processing technology.

Benefit of "belt and road" the new material industry to obtain large investment

With the 2017 "Belt And Road" Summit in Beijing successfully opened , infrastructure , industrial investment , economic and trade cooperation , energy resources , ecological environment and other eight areas once again the market hot . As the host of the Summit , China has been actively promoting China's manufacturing and supply side of the reform , industrial manufacturing industry around the " Internet + industry " , " Internet + manufacturing " direction , to promote the " Made in China 2025 " healthy growth . As the most important part of industrial manufacturing , the chemical industry in recent years committed to the development of new technologies and new materials , due to the demand for new materials in China increased year by year , the future or the birth of 100 billion level of the market . With the influx of capital into the industry , the new materials industry to increase the heat , investment institutions optimistic about the new materials industry (including super-hard materials , tungstend carbide tools ) , Including the development prospects , presents an unprecedented new hot spots . While benefiting from the " off the virtual reality " of the impact , as well as many favorable policies in the country , driven by the capital market has gradually become a new standard.

BTCarbide Precision Co.,Ltd. as a new material in China , tungsten carbide tools product development leader , will also bring the latest year's latest achievements in the exhibition , and industry experts , investment institutions , entrepreneurs to explore China's polymer new The development of materials and emerging industries (love base , net , information ) business and other issues . In recent years , actively implement the supply side of the reform to partnership between the development of the platform for the development of the carrier , focusing on polymer materials industry research and operation , the product covers not only general , engineering plastics and special engineering plastics and other fields , more widely used in high-speed rail , Aerospace and home appliances , automobiles , electronics and other industries , has become one of the industry leader . At the same time , the company to actively promote industrial upgrading , in 2016 to build China's first entity business platform . To the partnership between the development of the core business , to entrepreneurial accelerator and product incubator for the two drive , through the sharing of all elements of resources and one-stop service for entrepreneurs to create a new platform for development . Platform operation less than a year , not only helped more than 20 new materials practitioners to achieve a dream of entrepreneurship , creating a number of hundreds of millions of dollars in performance , more new polymer materials innovation and application of China to provide a strong scientific support.