With the development of national economy, the consumption of welding materials will continue to grow, according to experts predict that by 2010, China's welding materials will reach 200 million tons total, solid wires for gas accounts for about 20 to 25%, about 40 to 50 tons. In order to expedite the development of China's gas industry, solid wires, to better meet the welding requirements, the following recommendations:
1) ER49-1 production of welding wire can not meet the development requirements for welding materials technology development and international integration, should be phased out ER49-1 wire. Welding mild steel, should be preferred ZR50-6 wire, so that our CO2 carbon Welding Wire structure more reasonable.
2) to develop gas-shielded welding wire should be varieties, such as argon-rich gas mixture of carbon steel wire, 700MPa, 800MPa high strength wire, high-alloy steel wire, heat-resistant steel and high-toughness steel wire, in order to meet the development requirements of welding.
3) strengthen the non-copper wire manufacturing environment-friendly technology research, to provide users with high quality non-copper wire, CO2 gas shielded welding promote faster development process, and gradually replace the traditional copper wire, to the development of China's "energy and environmental protection "welding.
4) to further strengthen the solid wires for gas manufacturing technology research, to fully grasp the technical characteristics of imported equipment, raw materials, increasing the variety and quality, to develop a reasonable wire drawing, copper, layer winding, packaging and other production process planning, production solve Gas Shielded Welding Wire the quality of the stability problem, as soon as possible to shorten our solid welding wire and gas raw materials and foreign gap.
5) China's accession to the WTO, the domestic market by the world famous Welding Welding impact of large enterprises. Association of domestic consumables business and industry should be unified leadership coordination and guidance, to break the region, trade monopoly situation of the fortress, take the strong complementarity of funding or technical co-operation of roads, to avoid duplication at a low level of investment and vicious competition, take the group development path, as soon as possible to establish some reasonable layout, variety, quality and cheap base for welding materials (such as Kam Tai Metal Industrial Co., Ltd., Praxair gas companies), to ensure the welding industry as a whole to enter the international market.
6) Currently, the U.S., Japan, Europe, standards are increasingly to international standards (ISO) to move closer, it should put some manpower, material pay close attention to the adoption of international standards for the protection of our solid wires for gas standards revision and the promotion of solid wires for gas development and improvement of product quality, development of welding materials as soon as possible with international standards.
7) Strengthen communication and collaboration, improve the overall level of domestic CO2 welding wire. Domestic wire manufacturing enterprises, should continue to strengthen exchanges and cooperation between each other, especially to strengthen the scientific research units, wire mills and collaboration between the use of units, give full play to the advantage of countries, so that the quality of our CO2 welding wire, varieties continue to improve.
Solid wires for gas welding is a high-tech materials, it is adapted to the production and development of welding to high-quality, high efficiency, automation, low cost, environment-friendly direction of the trend. Metal structure manufacturing industry in China is only efficient in large scale melting of polar gas welding technology, the metal structure to meet the domestic needs of enterprise survival and development. Looking at domestic and solid wires for gas development, China and the industrialized countries, there is still a gap, which requires welding industry colleagues to work together as soon as possible to develop and produce high-quality wire products, to better adapt to the continuous development of welding production.
Laser welding is alloy, not steel Types Of Welding Wires, there will probably save a bad rust. Some laser welding on the surface coated with a thin layer of rust-proof material, but Anti-rust coating layer can not be too thick, otherwise it will affect the welding quality, because this rust layer is equivalent to impurities in the welding process. In particular, the mirror mold welding wire, Even if it is anti-rust coating layer. If the wire rust, surface rust with sandpaper to fight to the light, you can use without affecting the welding quality.
Copper wire copper wire rust rust for many reasons, such as the thick mist workshop, wire cleaning is not complete, poor coating quality, process execution is not strict, such as hand or glove contact with oil and other wire products, and packaging poor quality, lack of corrosion based on the requirements of post-treatment processes and so on. However, the copper wire is not the root cause of rust.
Copper wire is the root cause of rust electrochemical corrosion. Departure from the principles of electrochemistry, the use of Gas Shielded Welding Wirelayer of corrosion protection as the gas layer is unreasonable. Because copper is corrosion of the iron cathodic protection must be dense without holes in order to achieve the purpose of corrosion. However, gas-shielded copper wire, copper content in restricted circumstances, it is impossible to obtain dense non-porous layer of copper.