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Patent of stranded welding wire
The innovation and breakthrough of welding materials and welding technology is a major scientific and technological subject in China 's basic manufacturing industry. In 2009, professor Gao Ding from China University of Mining and Technology led to invent “multi-stranded combined welding wire” (also known as “stranded wire”), In the May 12, 2009 to obtain a patent of multi-stranded combined welding wire (Patent No .: ZL200920045272.8)The advent of the research achievements of stranded welding wire won concern and support from academician Pan Jiluan immediately. Academician Pan personally supervised and set up welding test group of mechanical engineering of Tsinghua University, to study deeply and update on the characteristics and mechanism of multi-stranded combined welding wire; and organized experts in the industry to carry out technical evaluation of “stranded welding wire” for many times, and confirmed the popularization and application of “stranded welding wire” belongs to “high speed, high efficiency, energy saving and green” development industry. In order to transform the scientific and technological achievements into productivity as soon as possible, China University of Mining and Technology has transferred the patent ownership of “stranded welding wire” to Jiangsu Lianjie Welding Technology Co., Ltd.. After several years of mechanism analysis and deep research based on “stranded welding wire”, our company has extended many kinds of inventions and creations related to welding material, stranded welding wire structure, welding wire stranding equipment, welding equipment and accessories. At present, our company has more than ten patents of independent property rights invention, and the company's research team of experts stick with the annual approval of a large number of scientific research projects for the "stranded welding wire" to provide a solid technical support.

Patent of forged stranded welding wire
"Forged stranded welding wire" invented to solve the technical problems. Aimed at " stranded welding wire" of the existing technology to provide a forging process, In the maintenance of cableshaped stranded welding wire on the basis of the original advantages of surface forging. The surface after Forged is glossy and smooth as the same condition as single wire, so that the surface of the wire to form cylindrical surface, the advantages are:
1) To enhance the stranded welding wire and conductive between the conductive performance
2) Reduce the friction between the stranded welding wire and the contact tip.
3) During welding process, gas transportation and protection are relatively uniform, and the gas shielded performance is improved.
4) Stranded welding wire surface accuracy requirements in the manufacturing process control significantly reduced the difficulty.
5) Welding arc is highly concentrated during welding process, easy to control and easy to achieve perfect welding effect.
6) Through forging, the coiled gap is squeezed, hence solving the defect of the manufacturing process of the cable-shaped stranded welding wire.
7) After forging the stranded welding wire, stress has been basically eliminated, and the stability of wire feeding is improved.