(1) Welding Inspection

Quality testing and quality assurance systems for the production of tailor welded blanks to provide a guarantee, the production of tailor welded blanks using automated production line process, to ensure security, economic production, which requires modern detection equipment. As early as 1985, ThyssenKrupp Tailored Blanks Ltd. began producing blanks when the monitoring system has been adopted, and now, this system has been even better. Laser welding seam behind the installation of a monitoring system for monitoring the quality of the weld to ensure the welds meet the quality requirements. Plasma Monitoring System were used to monitor the stability of the  Welding Electrode , computer-aided system to deal with the sensor in the welding process to provide the signal.

Tailored blanks requires economical automatic or semi-automatic production lines, while the use of modern technology to monitor the welding process and product quality. In order to meet any of these new fully automated production process of splicing plate production requirements, Thyssen Welding Technology Co., Ltd., ThyssenKrupp Steel Co., Ltd. research department, ThyssenKrupp Laser Technology Co., Ltd., and Disennuobang Co., Ltd. made in the early stages of weld quality and production process management automatic evaluation of the different possibilities, and began operating the first plant tailored blanks the first one on the use of tailored blanks on the floor in the Audi 100. In recent years, the technology in different stages of development and was further improved, it can not only control the welding process itself, and that under the existing system can be developed to evaluate the latest generation of welding technology. The monitoring system can not only monitor the high-speed welding process weld geometry of defects, but also to detect very small holes.

(2) evaluation system

Thyssen LAM (Laser Applications Management), combined with the weld inspection system can not only identify trends defects, such as irregular geometric gap (the gap incident, edge displacement, root subsidence), but also found a small degree of defects, For example, vents and holes. Light stripes, and the combination of plasma sensor system has been supplemented by the best condition, it can guarantee high measurement rate of the case at high welding speed, secure found slightly flawed possibilities.

A computer-aided assessment system can automatically assess the sensor signals, including during the welding process. Measurement points to determine whether the conditions related to meet specified requirements, or whether the error led to the whereabouts of joint quality has occurred. During the welding process, welding temperature by infrared measurement of registration. The mosaic panels were evaluated any sensor data records are stored in a short protocol, which means that the quality of the product by allowing documents to prove.

A complete error detection system to warn the operator that occur in the automatic welding facilities, all the mechanical defects, the quality management and monitoring system was extended to nonlinear Mig Welding Electrode for the production of a new device concept. Sensors placed in the welded joints can be detected before the sheet is to be welded connection to the edge, not only allows to identify the exact location of the edge connector, and allows measurement of the overlap between the sheet metal. When the identification of overlapping measurements is beyond a predetermined limit, it will warn the operator, and automatically sorting out the gap. In addition, the use of this equipment, connecting the edge of the detection signal is also used to accurately identify and adjust the edge of the laser beam connections.

At present, the welding technology in almost every industry. Welding by heat, pressure, or both, so that the two atoms combine to produce the workpiece processing and connection mode. Welding is widely used, both for the metal, can also be used for non-metallic. As the extensive use of welding, so be it gradually attention. So, on the history of welding technology, what does? I looked after the relevant information, are summarized as follows:

Metal welding applications with the emergence of the ancient methods of welding is cast welding, brazing and forge welding. Chinese Shang Dynasty bronze ax blade made of iron, copper, cast iron and is welded parts, the surface of copper and iron fusion line meandering twists and turns, good bonding. Spring and Autumn period tomb built in the drum seat has many copper dragon is made of sub-brazing. After analysis, the use of modern soft solder composition is similar.

Manufacture of the Warring States period swords, blades of steel, the knife blade is wrought iron,  Welding Electrode is generally made after plus hot forging. According to Ming Sung book "Heavenly Creations" recorded in the book: Ancient Chinese copper and iron into the furnace with heating, manufactured by forged knife, ax; Wong or sieve with a fine spread at the interface of aging on the wall of soil, sub- a large section of calcined welding anchor. Middle Ages, in Damascus, Syria has used forge welding manufacturing weapons.

Ancient long-term stay in the cast welding technology welding, forge welding and brazing level, the use of heat is the fire, the temperature is low, the energy to concentrate, can not be used for large cross-section, long seam weld the workpiece, can only be used making decorations, simple tools and weapons.

Early 19th century, Britain's Davis found that two kinds of arc and oxyacetylene flame can heat the local high-temperature molten metal; 1885 - 1887, Russia's other Naerduosi invented the carbon arc pole clamp; appeared in 1900 aluminum heat welding.

Early 20th century, carbon arc welding and gas welding very applied, but also appeared thinner coated electrodes arc welding, arc more stable, by the slag to protect the weld pool, welding quality is improved, the manual metal arc welding into the practical stage, arc welding from the 1920s became an important welding method.

During this period, the United States the use of arc voltage control electrode Noble gave speed, automatic arc welding machine made, making welding mechanization and automation of the start. 1930 American Robin Ivanov invention using the submerged arc welding wire and flux, welding mechanization has been further developed. 40 years, to meet the aluminum, magnesium alloy and alloy steel welding needs, and tungsten inert gas welding melt one after another.

1951 Barton Welding Institute of the Soviet Union to create electroslag welding, a large thickness of the workpiece and efficient welding. In 1953, the Soviet Union Liu Buff Chomsky, who invented the carbon dioxide gas shielded arc welding, gas shielded arc welding to promote the use and development, such as the emergence of a mixed gas arc welding, flux-cored arc welding and gas residue from the Joint shielded arc welding and so on.

In 1957 the United States invented plasma arc welding Gage; 40 years in Germany and France invented the electron beam welding, but also practical and 50's has been further developed; 60 years appeared laser Mig Welding Electrode, plasma, electron beam and laser welding method of the emergence of signs a high energy density welding of new development, greatly improved the weldability of materials, many difficult to use other methods of welding materials and structures to be welded.

Other welding techniques as well in 1887, the United States, Thompson invented the resistance welding and spot welding and seam for sheet metal welding; seam welding is a bonding in the first semi-mechanized welding, seam welding process as carried out by two parts Push the wheel forward; the twentieth century, the 1920s started using flash butt welding method of welding rods and chains. At this point resistance welding into the practical stage. In 1956, the United States, Jones invented the ultrasonic welding; the Soviet Union Hill season Cove invention friction welding; 1959, Stanford Research Institute successfully explosion welding; the late 1950s the Soviet Union has made a vacuum diffusion bonding equipment.