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CCTV News, Beijing, August 5 (Reporter Kong Ying Jia Liliang) According to the News and Newspaper Digest of China Central Radio and Television, from the manufacturing of construction machinery to the production of precision electronic instruments, welding is indispensable. The quality of welding materials directly affects the welding process, so it is vividly called "steel needle thread". Voice of China specially planned "Invisible Champion". This issue focuses on a welding material company in Tianjin. Through independent innovation and research and development, they have solved multiple "stuck neck" problems and filled gaps in many fields.
In the welding laboratory of the product trial production evaluation center, where arc dazzling, spark spatter... Technologists are conducting welding tests on the performance of newly developed welding wire products. Ma Qiang, deputy manager of the technical department of Tianjin Jinqiao Welding Materials Group Co., Ltd., recalled that when the company produced flux-cored wire for the world's "super project" Hong Kong-Zhuhai-Macao Bridge, in order to ensure the quality and service life of the bridge project, they did it. Don't sleep, experiment over and over again.
Ma Qiang: Crack resistance is a key indicator. One of the most influential factors is the content of diffused hydrogen. The content of diffused hydrogen in ordinary welding materials is about 10 ml/100g, but we can do it within 5 ml/100g to ensure that its hydrogen content is at a very low level.
As an enterprise with annual production and sales volume of welding materials exceeding one million tons, the number of existing patents has reached more than 600, including 110 invention patents. During the epidemic, the research and development team focused on the research and development of high-strength plate and large-line energy flux-cored welding wire for the construction of large-scale crude oil reserves in China, breaking the long-term monopoly of foreign countries on this product and solving an important "stuck neck" technology for the construction of large-neck.
Ma Qiang: For example, around the marine engineering, the national energy pipeline, in fact, are exposed during the outbreak of some of the "stuck neck" projects, but also pointed out the direction of our research and development.
In the manufacturing industry, welding technology is like "tailor-made", and the choice of welding materials plays a decisive role in the quality of "big country heavy equipment. Zhang Guoxi, the first-level director of the Raw Material Industry Department of the Tianjin Municipal Bureau of Industry and Information Technology, said that he will continue to be a "matchmaker" for enterprises and steadily promote the transformation and upgrading of the welding material industry.
Zhang Guoxi: We guide welding material enterprises to connect with relevant enterprises. For example, we help welding material enterprises and relevant enterprises to increase product consumption and jointly carry out "neck-sticking" technical research exchanges, so as to promote the cooperation intention between the two sides, promote the high-quality development of welding material enterprises, and help Tianjin welding material application in major national projects.
Production is speeding up and sales are gaining momentum. On the day of the interview, it rained heavily in Tianjin. The reporter saw trucks waiting for loading outside the factory. At this moment, Lang Helei, deputy director of the group's flux-cored wire factory, had a smile on his face.
Lang Helei: The products we produce every day are sent to all parts of the country and to countries around the world through trucks. This year, our export volume has also increased significantly.
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