Laser welding principle: the role of laser welding is the use of lasers in the instantaneous melting of the metal surface of a welding electrode connections. Laser Plastic Welding
Features: As the miniaturization of components to keep the development requirements of small joints, welding, high strength, on the processing of small heat-affected zone around the point. Therefore, the traditional welding process is difficult to meet the requirements, laser welding can be achieved. Laser welding can produce real, so that all aspects of contact materials melt mixing. The main features of laser welding: 1, the welding speed, aspect ratio, small deformation 2. High air tightness, simple equipment 3. Work in a variety of conditions for 4. Can be on heterogeneous, high melting point metal for welding 5. Can be simultaneously processing and multi-bit processing 6. Can be implemented non-contact distance optical fiber transmission welding
: the welding sssembly operations, widely used in micro-circuit components, such as lead and the printed circuit board connections, the lead contact with the silicon plate connections, thin wire and thin film soldering, integrated circuits, coplanar leads and printed circuit board connections. Can also be applied to kinescope electron gun, relays, sensors, optical isolators, fiber couplers, FCSC detectors, laser, coaxial devices, optical receiving module, optical reflection module, laser plastic welding a variety of battery ...
First, the shipbuilding industry of the new situation
2006 is the implementation of China's shipbuilding industry, "Eleventh Five-Year Plan" the first year, by the efforts of the ship companies that ship industry presents a sustained, steady and healthy development momentum. Mainly in the country amounted to 14.52 million dwt shipbuilding, an increase of 20% of new ship orders to undertake up to 42,510,000 deadweight tons, an increase of 73%. China's shipbuilding accounts for 19% of world market share, ranking third in the world for 12 years, with South Korea, Japan and other advanced shipbuilding countries significantly reduced the gap; new ship orders to undertake 32% of the world's total market share, ranking second in the world ; handheld shipbuilding orders account for 24% of world market share.
II. Ships welding in shipbuilding and important contribution to the critical role
Established in 1986, China's shipbuilding industry and efficient welding technology steering group has been to unify the planning, guidance, overall progress of the policy under the guidance of more than 20 years of excellence in promotion and application work, the effectiveness of more significant are in the shipbuilding industry vigorously promote the use of iron powder electrode, gravity electrode, downstream electrode, CO2 gas shielded arc welding, flux cored wire, one side welding technology, multi-wire submerged arc welding techniques, gas-electric vertical automatic welding, automatic welding of horizontal gas-electric, multi-wire high-speed automatic angle Welding Assembly, MAG welding double wire, double wire vertical gas-electric welding, robotic welding pipe flanges other items of efficient automatic welding technology, materials and equipment in the promotion and application of welding greatly improve production efficiency, thus contributing to the ship substantial increase in production, basically to meet the main ship (oil tankers, bulk carriers, container vessels) LPG ships, LNG ships, FPSO vessels, VLCC ship's construction and quality requirements, from which the ship can be seen in the welding technology is the key technology of ship construction One is to promote the advanced ship building technology to shorten cycle plays a key role in shipbuilding.
III. Ship welding technology welding, welding equipment and auxiliary equipment needs of enterprises
New developments in ship welding technology
After the "fifth" of unremitting efforts, China's ship only welding processes welding technology has reached more than 40 diversity, and have received national recognition of classification societies, in the construction of ocean-going vessels and export ships to get the application, mechanization and automation of welding up to 60% have increased significantly, ship welder welding material consumption per capita reached at 15 kg / person. day, one side welding liner use amounted to 70 million meters of energy-efficient Welding Wire share amounted to 98%, rotary DC welding machine has been basically eliminated.