The Welder Class G license is the highest level of welding license. Melt welding and thermal cutting operations (electric welding, gas welding, arc welding, electric welding gas cutting, other), also called the induction license. Only a G license qualifies you to weld Yinwa steel.
In recent years the overall level of development of China's welding technology is relatively good, however, the gap between China's welding industry and the developed countries is still very large, especially in the application of high and new technology gap is even greater, the application of welding technology:Welding technology is not widely used, not a large number of welding production mechanization, automation level is low. Inverter welding technology has matured, is being widely used in the country, wave control, intelligent and automatic, semi-automatic welding technology, the rapid development of complete sets of specialized welding equipment, the overall manufacturing capacity and level of greater improvement.
Development of a better momentum, the level of production of welding materials, rapid growth, product structure changes, CNC cutting machine manufacturing has formed a certain scale, but the supporting plasma cutting power supply but also a large number of imports of welding equipment, welding equipment, automatic, semi-automatic degree is not high special CNC cutting equipment varieties are not many.
Expand the application of welded structures, vigorously promote high-quality, energy-efficient welding technology, improve the welding mechanization, automation level, the realization of the modernization of welding technology and equipment, improve the quality of welding, reduce costs. Welding is a low-cost, high-tech connection of materials and reliable process methods. So far, there is no other process than welding is more widely used in the connection between the material, and the welded products to produce greater added value.
In the domestic, whether from the current welding equipment and materials production than the composition of the development trend, or from the welding equipment and materials manufacturing technology and development direction, China's current welding technology has been a great development, part of the product technology has reached or close to the advanced level of foreign countries, in particular, the inverter welder technology. Therefore, no matter now and in the future, welding is successfully processed into a variety of materials can be put on the market products of choice process.
Welding technology has developed into a comprehensive discipline of materials science, mechanics, heat treatment, metallurgy, automatic control, electronics, inspection and other disciplines as a whole. Welding as a modern advanced manufacturing process technology, is gradually integrated into the main life of the product process, that is, from the design and development, process development, manufacturing production, to the operation of service, failure analysis, maintenance, recycling and other product stages. Welding
Welding technology from a single process into the development of emerging comprehensive engineering technology, has been involved in raw materials, structural design, welding process, welding equipment and process equipment, welding materials, welding preheat treatment, cutting, beveling, welding process development and related standards, welding production, welding process monitoring and management, post-welding treatment and coating, inspection, welding and environmental protection, Welded joint operation and many other technical processes.
Welding as a wide range of systems engineering, its scope of application is not only used in heavy machinery, power equipment, petrochemical, transportation, construction engineering, aerospace and aviation industries, but also expanded to electronic devices, household appliances, medical equipment, communications engineering and other fields.
Inverter welding machine technology has matured and is being popularized and applied nationwide. Inverter welder energy-saving 20%,30%, saving 80%,90%, easy to achieve multi-functional, automation and intelligence and other outstanding advantages, and China's R & D and production technology has matured, the output and variety of the development of the country has been included in the directory of high-tech products, according to incomplete statistics for two consecutive years at a rate of 43%,45% of the rate of increase in the total number of welders of all categories of 7%,9%, that is, close to 1/10. Close to 1/10. Inverter welding technology and the development of the general level, can be summarized as follows:
l, high-power inverter technology to increase to 1000A submerged arc as well as 630A manual arc welding/TIG, arc gas planing and 250A air plasma cutting and other processes have been mature applications.
2, inverter CO2 welding technology to promote the opening of a new situation: inverter CO2/MAG/MIG DC, pulse, AC square wave welding equipment, by increasing power (up to 630A), waveform control, one-dimensional regulation, the introduction of the arc arc control technology to reduce the spatter, improve the molding can partially meet the need for high-grade welding structures.
3, represented by the DSP digital control technology: has been reported, a few manufacturers have exhibited and entered the market. This marks China's inverter high-performance welder technology is gradually converging with the international level, but there is a gap between the technical level and performance.
(ii) wave control, intelligent and automatic, semi-automatic welding technology, the rapid development of
Automatic, semi-automatic gas-shielded welding machine, submerged arc welding machine, resistance welding machine and other products, is the realization of high-quality, high-efficiency welding process is a must, 2000-2002 CO2 / MIG / MAG welder production, accounting for the total output of 11%,13%, an increase of 26% over the previous year, the 63%, submerged arc welding production growth of 107%, 150%. 2000 China's spot arc welding robot has reached 980 units.
Through fuzzy control, neural networks, sensors, database (expert system), IC card, digital control of the welding current for fine and intelligent regulation, the welding "work" to do fine, do fine, do fast, etc., the level of scientific research to reach or close to the advanced level of foreign countries, but in the actual application of foreign countries with a wide range of gaps.
(C) complete sets of specialized welding equipment, the overall manufacturing capacity and level of greater improvement in the development of a better momentum
In recent years, due to the user's higher requirements, China's complete sets of specialized welding equipment is not only the overall manufacturing capacity and level of greater improvement, but also in the basic parts, supporting the selection of parts of the effort, and there are many new breakthroughs in the general part of the product has been close to or reached the level of foreign water, but the special welding equipment to reach or near the advanced level, but in practical applications, the gap with foreign countries. Foreign water level, but the production level of special welding equipment and major equipment can not meet the needs of domestic users, imports continue unabated, amounting to nearly 300 million U.S. dollars, and China's total annual output of welding machines.