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Hangzhou Fujing Welding Technology Co., Ltd

HANGZHOU FIRMKIM WELDING TECHNOLOGY CO.,LTD.

HANGZHOU FIRMKIM WELDING TECHNOLOGY CO.,LTD. was established in 2007 and is a wholly-owned subsidiary of hangzhou huaguang welding new materials co., ltd. (stock code: 688379), a company listed on the science and technology innovation board. The company is committed to intelligent, green and efficient welding solutions, and has joined hands with domestic and foreign experts to focus on welding problems such as non-ferrous metals and heterogeneous metals for a long time.

The company has formed its own unique core technology in the fields of laser welding, induction welding and vacuum welding. By providing different customers with cost-effective customized products and technical services, it helps customers reduce costs and improve competitiveness. The products have been widely used in refrigeration, hvac, electric power appliances, new energy vehicles, nuclear power, semiconductor equipment, energy storage, home appliances and other industries.

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The national standard review meeting of brazing materials was held in Hangzhou: to promote product improvement and quality improvement, and promote the high-quality development of brazing industry.

The national standard review meeting of brazing materials was held in Hangzhou: to promote product improvement and quality improvement, and promote the high-quality development of brazing industry.

On October 24, 2024, the fifth meeting of the 8th Brazing Sub-Technical Committee of the National Welding Standardization Technical Committee was held in Hangzhou. Professor He Peng, Chairman of the Brazing Sub-Technical Committee, and Jin Limei, Chairman of Hangzhou Huaguang Welding New Materials Co., Ltd. Welcome speech. The meeting was sponsored by the National Welding Standardization Technical Committee and mainly undertaken by Hangzhou Huaguang Welding New Materials Co., Ltd. Long Weimin, chief scientist of China General Institute of machinery and director of State Key Laboratory of new brazing materials and technology, Ma Xin, vice chairman of brazing sub technical committee, presided over the meeting, Lu Xiaochun, vice chairman of brazing sub technical committee of National Welding Standardization Technical Committee, and Yang Zijia, Secretary General, etc., more than 40 brazing industry experts and enterprise representatives attended the meeting. Leading industrial development and promoting technological upgrading National standards play an important leading and supporting role in industrial development, and can effectively promote the technological progress and industrial upgrading of the industry. As one of the key basic technologies of the manufacturing industry, with the development of the manufacturing industry towards green, intelligent and high-end, new demands and higher challenges are put forward for brazing materials and technologies, and regular products can no longer meet the market demand. The conference reviewed and revised three national standards, including "Copper-based Solder Part 1: Solid Solder", "Nickel-based Solder Part 1: Solid Solder" and "Aluminum-based Solder Part 1: Solid Solder". It focused on the technical requirements of high-end equipment manufacturing and added smaller size indicators to meet the needs of integrated, functional and miniaturized products, at the same time, the main element, impurity element content and melting temperature range in the chemical composition of some brazing filler metals are adjusted, and new types of brazing filler metals in engineering applications are added. The revised three national standards have more reasonable chemical composition requirements, and the composition list is more in line with the requirements of the product itself, thus promoting the improvement and quality of brazing material products in China, which is an important milestone for the sustainable development of the industry to achieve industrial upgrading. As a "single champion demonstration enterprise" in the medium-temperature brazing material industry, Huaguang New Material has been committed to the research and development of brazing technology and the manufacture of high quality brazing materials. It is the first drafting unit of Silver Brazing Material (GB/T 10046-2018) and has participated in the formulation of 10 national standards such as Copper-based Brazing Material. By hosting this national standard review meeting for brazing materials, Huaguang New Material has discussed the industry technology development direction with experts and enterprise, work together to promote the high-quality development of China's brazing industry.

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The 8th China (Hangzhou) Green Connection and Manufacturing 2024 Summit Forum Held

The 8th China (Hangzhou) Green Connection and Manufacturing 2024 Summit Forum Held

On October 21, the 2024 International Brazing, Diffusion Welding and Micro-nano Connection Conference and the 8th China (Hangzhou) Green Connection and Manufacturing 2024 Summit Forum opened successfully in Hangzhou, Zhejiang Province. From October 21 to 23, the conference focused on advanced brazing materials and brazing technology, diffusion welding technology, micro-nano connection new technology and application of three directions to carry out conference reports, branch theme reports and other academic exchange activities. At the meeting, experts from all walks of life discussed the theoretical and technical exploration in the fields of brazing, diffusion welding and micro-nano connection, promoting the exchange and integration of production, teaching and research, and helping the high-quality development of the industry. The conference was hosted by the Welding Branch of the Chinese Society of Mechanical Engineering (hereinafter referred to as the "Welding Branch"), Hangzhou Huaguang Welding New Materials Co., Ltd., Zhejiang University of Technology, National Key Laboratory of Precision Welding and Connection of Material Structures, New Brazing Materials and Technology State Key Laboratory, Tsinghua University, Beijing University of Technology jointly organized. In June 2014, the Welding Branch of the Chinese Mechanical Engineering Society successfully held the "International Conference on Brazing and Special Connection Technology" in Beijing. After a lapse of ten years, the Welding Branch held such an international conference again. According to industry insiders, brazing, diffusion welding and micro-nano connection technologies have been playing an important role in a wide range of fields such as aerospace, transportation, new energy, semiconductors, integrated circuits, and high-end manufacturing. According to reports, a total of experts, scholars, scientific and technological personnel and business representatives from more than ten countries at home and abroad in the fields of brazing, diffusion welding and advanced packaging micro-nano connections attended the meeting. Participants conducted in-depth exchanges on cutting-edge research and future development in related fields, focusing on the opportunities and challenges faced by brazing, diffusion welding and micro-nano connections under the background of "carbon peak and carbon neutrality" to promote discipline development, Talent training, technological progress and industrial upgrading. As the key content of the meeting, after the opening ceremony, the meeting held 7 special invited reports, including using electrostatic jet deflection system to improve the printing speed of electrofluid jet printing, the basic principle and solution of hard alloy brazing, the latest progress of surface activated bonding for heterogeneous material bonding, B- class conductive adhesive in advanced electronic packaging technology, nano-connection and micro-nano device integration. On the afternoon of October 21, Huaguang New Materials held a green connection and manufacturing summit forum with the theme of "artificial intelligence integration and innovation. According to reports, artificial intelligence is an important driving force for the new round of technological revolution and industrial transformation, which will bring many new industrial opportunities. Welding and connecting materials and corresponding technologies are also closely related to the development of artificial intelligence. The summit forum specially invited 8 senior experts at home and abroad to exchange views on the topics of artificial intelligence design, welding robot application, artificial intelligence-related electronic and micro-nano connection material innovation, future brazing and micro-nano connection material technology and industrial direction in the Welding materials. From October 22 to 23, the conference will arrange more than 60 academic exchange reports in the two sub-venues of brazing and diffusion welding and micro-nano connection. Among them, brazing and diffusion welding mainly involve discussions on topics such as multi-main element brazing materials facing brazing challenges, wetting and interface reaction of high-entropy carbide ceramics, basic principles and applications of diffusion welding and the latest inventions, research progress of ultrasonic assisted brazing, and multi-energy field hybrid welding and brazing technology of dissimilar metals; the micro-nano connection sub-venue mainly involves discussions on the properties of nanomaterials for low-temperature welding, the mechanism of solder joints in electronic packaging structures, the 3D integrated high-flux bonding technology of nanoparticles, the ultra-fast laser packaging technology of semiconductor materials, the new interconnection materials and technologies for IC packaging, and the advanced packaging technology of copper paste technology. The relevant person in charge of Huaguang New Materials said that this conference is of great significance to enhance the international competitiveness, academic influence and innovation guidance of my country's brazing, diffusion welding and micro-nano connection technology. Huaguang New Materials looks forward to continuing to work with experts, scholars and industrial chains at home and abroad through the platform of Green Connection and Manufacturing Summit Forum in the future to jointly promote technological progress and high-quality development of the industry and help the development of new quality productivity.

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Laser welding: an excellent representative of modern welding technology

Laser welding: an excellent representative of modern welding technology

In today's advanced manufacturing field, laser welding has become a high-profile welding technology with its unique advantages and excellent performance. The working principle of 1. laser welding Laser welding is the use of laser radiation energy to achieve effective welding process. The core principle is to excite the laser active medium in a specific way, such as the mixture of CO2 and other gases, YAG yttrium aluminum garnet crystal, etc., so that it oscillates back and forth in the resonant cavity to form a stimulated radiation beam. When the beam is in contact with the workpiece, the workpiece absorbs the laser energy, and the temperature reaches the melting point of the material to start welding. According to the mechanism of welding, laser welding is mainly divided into heat conduction welding and laser deep penetration welding. • Heat conduction welding: laser radiation heating is welded to the metal surface, the surface heat through the heat conduction effect to the material internal diffusion. By precisely controlling the parameters such as the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool, and finally the two contact surfaces to be welded are melted and welded together. This welding method is suitable for precision welding of micro, small materials and thin-walled materials. • Laser deep penetration welding: when the laser beam with high power density is radiated to the Welding materials, the material absorbs light energy and converts it into heat energy, which is heated to vaporize to produce metal vapor, and the reaction force generated makes the molten metal liquid flow around and form pits. With the continuous generation of heat, the pit gradually deepens. After the laser irradiation is stopped, the peripheral solution is refluxed and the workpieces are welded together after cooling. This welding method is commonly used for high-speed welding of thick and large materials. Advantages of 2. laser welding • High welding quality: • Weld beautiful: laser welding can achieve non-contact welding, weld smooth, no pores, cracks and other defects, good appearance. • Excellent mechanical properties: laser welding has a molten pool purification effect, which can purify the weld metal, and the mechanical properties of the weld are equivalent to or better than the base metal. Small heat affected zone: laser welding heat input is small, cooling speed and solidification speed is fast, welding heat affected zone is small, microstructure is fine, which is very important for welding heat sensitive materials or parts that need to maintain high precision size. • High welding efficiency: The laser beam can be focused on the welding part quickly and accurately, and the welding speed is fast, which greatly improves the production efficiency. For example, in the automobile manufacturing industry, laser welding has been widely used in the assembly and welding of the car body, which can complete a large number of welding tasks in a short time. High processing flexibility: the laser can be transmitted by optical fiber, the energy loss is very small in the process of transmission, and can be transmitted to a long distance. This allows the laser to be placed at a certain distance from the welding station, which is easy to realize the automation and flexible processing of welding, and can adapt to the welding requirements of various complex shapes and structures. • Wide range of applicable materials: Laser welding can be used for welding carbon steel, low-alloy high-strength steel, stainless steel, aluminum alloy and titanium alloy and other metal materials, and can also be used for welding some non-metallic materials. Disadvantages of 3. laser welding High equipment cost: The price of laser welding equipment is relatively high, including lasers, control systems, optical systems and other parts, and the initial investment is large, which limits the application of some small businesses or low-budget projects to a certain extent. • High requirements for weldments: The position of the weldment must be very precise and must be within the focus of the laser beam. If the weldment requires the use of a fixture, it must be ensured that the final position of the weldment is aligned with the weld spot that the laser beam will impact. • Welding thickness is limited: For thicker workpieces, laser welding may require higher power and longer welding time, and the maximum weldable thickness is also limited. In general, the penetration thickness of the workpiece far more than 19mm, in the production line is not suitable for the use of laser welding. Sensitive to material reflectivity and thermal conductivity: high reflectivity and high thermal conductivity materials such as aluminum, copper and its alloys, weldability is greatly affected by laser wavelength, and it is difficult to achieve thermal conductivity welding. Application fields of 4. laser welding • Automotive manufacturing: The automotive industry is one of the main application areas for laser welding. Laser welding is used for the assembly and welding of automobile body, such as the welding of roof and frame, the welding of door, etc., which can improve the strength and sealing of the body, while reducing welding deformation and weight. In addition, laser welding technology is also widely used in the welding of auto parts, such as engine cylinder gaskets, hydraulic tappets, spark plugs, filters, etc. • Aerospace: In the aerospace field, the requirements for welding quality and accuracy are extremely high. Laser welding can meet these requirements, which is used for the welding of aircraft fuselage structural parts, the welding of engine parts, the welding of rocket engines, etc., which helps to improve the reliability and safety of aircraft. Electronics industry: The manufacture of electronic equipment requires high-precision welding technology. Laser welding can be used for the welding of electronic components, such as the internal circuit connection of mobile phones, computers and other electronic products, chip packaging, etc., to achieve precision welding of small components. • Medical devices: The welding of medical devices needs to ensure the quality and hygiene standards of welding. Laser welding technology can be used in the manufacture of medical devices, such as surgical instruments, dental instruments, medical implants, etc., with the advantages of strong welding and no pollution. • Hardware: Welding of hardware products usually requires high welding strength and aesthetics. Laser welding can be used for the welding of hardware tools, kitchenware, sanitary ware and other products, which can improve the quality and service life of products. In short, as an advanced welding technology, laser welding has the advantages of high welding quality, small heat-affected zone, high efficiency and strong flexibility, and has been widely used in many fields. With the continuous development and improvement of technology, the application range of laser welding will be further expanded and make greater contributions to the development of modern manufacturing.

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HANGZHOU FIRMKIM WELDING TECHNOLOGY CO.,LTD.

Tel: +86-18594983359
Mail: Firmkim@cn-huaguang.com
Post code: 311112
Add: No. 82, Qihang Road, Renhe Street, Yuhang District, Hangzhou City, Zhejiang Province

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