Commissioned by the TGTB Precision Copper Foil Co., Ltd., the China Nonferrous Metals Industry Association organized a scientific and technological achievements evaluation meeting and evaluated the results of the "Research and Application of High-Performance and High-Speed Electronic Copper Foil Technology for High-Speed and High-Speed PCB" project. An evaluation expert group composed of 7 academicians and experts engaged in the field of non-ferrous metallurgy and metal materials, affirmed the efforts of TGTB Copper Foil Co., Ltd. in the research and development of electronic copper foil technology and equipment, and made scientific and technological achievements and Authoritative evaluation.
The expert group first inspected the site. At the meeting, the participating experts listened to the company's work report and reviewed relevant information. Through questioning and answering questions, they innovated the high-performance high-speed electronic copper foil process technology for high-speed PCBs. The Office concluded that the overall technology of the project has reached the international advanced level. Among them, the ultra-low-profile electronic copper foil peel strength and power supply stability are among the world's leading indicators. The company is recommended to increase the promotion of results and increase market share.
Manufacturing the thinnest copper foil in the world
In just 10 years, relying on "Science and Technology Innovation + Lean Manufacturing", TGTB Copper Foil Co., Ltd. has emerged and grown rapidly. Whether it is process equipment, manufacturing technology, production capacity and quality, it has become the industry benchmark, not only the domestic copper The leading company in the foil industry is also one of the few international manufacturers of high-precision electronic copper foils ranging from ultra-thin to ultra-thick.
"The thinnest is only 6 microns, and it is difficult to find a second company thinner than this"
Only with core competitiveness can we consolidate and expand the market
In the golden autumn season, TGTB Copper Foil Co., Ltd., located in Economic Development Zone, has entered the peak production season. Putting on dust-proof clothes, shoe covers, hats, and entering the constant temperature and humidity raw foil workshop, what caught the reporter's sight was a busy production scene. On the green foil machine, the titanium roller is constantly rotating. Using the principle of electrolysis, the copper ions in the copper sulfate electrolyte in the bottom tank are adsorbed into a shiny copper foil. It feels thinner than ordinary paper when touched by hand.
"The production equipment is imported from abroad. It is currently the most advanced in the world. The thinnest electronic copper foil produced is only 6 microns. It is difficult to find a second company thinner than this in the world." October 12 On the day, Wang Tong, deputy general manager of Anhui Copper Crown Copper Foil Co., Ltd. told reporters that this product with a thickness of only 6 microns is the most core competitive product of copper crown copper foil. Since its mass production in July this year, The market is in short supply.
Copper foil is the basic electronic material for the development of the electronic information industry. It is widely used in electronic computers, modern communication equipment, electric vehicles, aerospace and other products. Its quality directly affects the performance of electronic products. The 6-micron-thick copper foil of TGTB Copper Foil is an important raw material used to make lithium batteries. It is understood that the value-added cost of electronic copper foil for 1 ton of high-precision printed circuit boards is more than 30,000 yuan, while the value-added cost of 1 ton copper foil for lithium batteries is more than 40,000 yuan, but the processing costs are similar.
In recent years, new energy vehicles powered by lithium batteries have become the development direction of the world's auto industry, and lithium battery copper foil is the key material for lithium batteries. "Lithium copper foil is the most critical material for the negative electrode of lithium batteries. Its thickness determines key indicators such as the capacity and energy density of lithium batteries in the same space. 6 micron copper foil can effectively help lithium batteries to increase the energy density of 2.5%, and meet Lightweight development trend of new energy vehicle battery systems in the future. "Said Li Dashuang, deputy director of TGTBCopper Foil R & D Center.
Relying on the competitive advantage that no one else has, and everyone has my own advantage, at present, the copper battery products of TGTB Copper Foil Company have entered the top five lithium battery manufacturers in China. Among them, reached a 6-micron supply agreement with well-known domestic lithium battery manufacturers such as CATL. In the first half of this year, 10,128 tons of copper foil were produced and sold, with an output value of 720 million yuan, achieving leapfrog development. "In order to occupy a place in the increasingly fierce market competition, we must practice innovation 'internal skills', focus on the latest market needs, create our own fist products, and quickly occupy the commanding heights of the industry's development, forming its own core competitiveness." Wang Tong said.
"Not only broke the international monopoly in the field of high-precision electronic copper foil, but also completely ended the dependence of electronic copper foil on imports"
——Only by strengthening cutting-edge R & D can we lead our peers to grasp the future
The thickness of 6 micron copper foil is only one-tenth of the thickness of hair. This kind of thinness is extremely extreme, which makes many copper foil companies discourage. At the same time, fierce market competition forces companies to develop new products.
"From November last year to June this year, the overall consumption of the lithium battery copper foil market continued to be sluggish. To grow against the trend, the development of new products 6 micron lithium battery foil has become an urgent task." Wang Tong told reporters, but electronic copper foil The technology in this field has been monopolized by the United States, Japan, South Korea and other countries for a long time. If you want to break down the barriers, you must rely on yourself and be creative.
2017Based on the stable supply of 8 micron products in 2017, TGTB Copper Foil Company immediately formulated a 6 micron R & D plan and set up a key research group. "The key core is the additives and the ratio. The research and development team searches the literature, finds information, and experiments to try various additives and ratios." Li Dashuang said that after numerous repeated experiments, the formula was finally determined and successfully produced. The 6-micron-thick lithium foil as thin as silk has achieved a new breakthrough in domestic copper foil technology and filled a gap in the domestic market.
Tong Wang told reporters that members of the research team are the backbone of production. In order not to affect normal production, research and development work is often carried out at off-hours, and early morning and late return and continuous overtime are commonplace. Especially at the critical moment in the development of 6 micron copper foil, the team members took turns to fight for almost 24 hours. It is precisely based on this persevering work spirit that after everyone's continuous efforts to summarize and transform, the production meters of 6 micron copper foil have gradually increased from 1,000 meters to 2000 meters, 3000 meters, 4000 meters, 5000 meters to more than 10,000 now Meter.
Advanced machinery and equipment, superb technical level, and refined on-site management have greatly improved the company's efficiency and various economic indicators. Last year, the copper foil finished product rate reached more than 89%. High-end customers of copper foil for printed circuit boards accounted for The ratio is over 95%, and it is widely used in many fields such as communication, IT, new energy industry and aerospace engineering. "Not only has it become the largest copper foil manufacturer in China, but it has also broken the international monopoly in the field of high-precision electronic copper foil and completely ended the dependence of electronic copper foil on imports." Wang Tong said.
"We are the first to eat crabs in such small, lightweight and low-energy equipment on large production equipment"
Only to seize the frontier for R & D can we have the right to speak the industry standard
In the copper foil production workshop, unlike a row of "floating work" green foil machines, the switching power supply standing side by side is particularly "obtrusive", which immediately caught the attention of reporters.
"This is a high-frequency switching power supply, which belongs to a dedicated electrolytic power supply. Its biggest feature is its small size, light weight, and high efficiency. Generally speaking, the voltage is only about 5 volts, and the current passed is 40,000 to 50,000 amps. Great improvement. "Wang Tong told reporters that this alone can save more than 1,000 yuan in electricity costs per ton, which is the lowest energy consumption in the industry.
"In the past, high-frequency switching power supplies could only be used on low-power equipment such as computers. Few people used this kind of large-scale production equipment. We are the first to eat crabs." Wang Tong said that the company cooperated with upstream manufacturers to develop technology Tackling key problems, when the Hefei plant was put into operation in 2009, it went on 6 sets and found that it can save about 12% -15% of energy compared with the past thyristor power supply. "Later, we used this power source not only at the Hefei plant, but also at our bases in Tongling and Chizhou. Seeing such an immediate effect, other companies in the industry have followed suit."
In recent years, the copper crown and copper foil have established a complete R & D investment accounting system. "Every year, we spend more than 3% of sales revenue on research and development, and continue to increase technical innovation. This year, 18 units have undergone technical reforms and production capacity. Suddenly it increased by 20%. "Wang Tong told reporters that the original roll of copper foil can only receive 4,000 meters to 5,000 meters. After technical transformation, it can receive about 10,000 meters, and the labor efficiency and the yield rate are greatly improved. improve.
Relying on continuous investment, the innovation ability of copper crown and copper foil has been continuously improved, and technical results have continuously emerged. A series of core technologies and key technologies such as high-efficiency copper dissolution technology, high-precision electrolyte filtration technology, and high-current low-voltage electrolysis technology have been developed Equipment and rapid industrialization. The development and application of these technologies have broken the monopoly position of foreign counterparts in this technology field, filled a number of domestic technological gaps, and played a leading and demonstrative role in the technological progress of the domestic electronic copper foil industry. At present, the company has 15 authorized invention patents, 20 utility model patents, 2 computer software copyrights, participated in the formulation of a number of copper foil national standards, and presided over the formulation of 3 Anhui local standards.