The history of world welding forging welding technology appeared in Egypt more than 3000 BC. Over 2000 BC, the Yin Dynasty in China used casting and welding to make weapons. Before 200 BC, China had mastered the brazing of bronze and forging welding of iron. 180 1 year: the arc was discovered by H.Davy in Britain. Edmund David discovered acetylene gas. 1856: British physicist James Joule discovered the principle of resistance welding. 1959: DeVille and Debray invented hydrogen-oxygen welding. 188 1 year: the earliest carbon arc welding machine was invented by Demery Ence, a Frenchman. 188 1 year: it took Dr. R. H. Thurston of the United States six years to complete all the experiments on the strength and ductility of a full range of copper-zinc alloy solders. 1882: The austenitic manganese steel invented by Robert A. hadfield of England and named after him was patented. 1885: Elihu Thompson of the United States obtained the patent of resistance welding machine. 1885: carbon arc welding technology developed by Benardos Olszewski, Russia. 1888: Russian H. Cлавянов invented metal electrode arc welding. 1889 —— 1890: American C. L. Coffin used bare wires as electrodes for arc welding for the first time. 1890; American C. L. Coffin put forward the concept of welding in oxidizing medium. 1890: Englishman Brown tried to rob a bank for the first time by using oxygen and gas cutting. 1895: The X-ray phenomenon of a beam of electrons passing through a vacuum tube was observed by Konrad Roentgen in Bavaria. 1895: Frenchman Le Chatelier obtained the certificate of inventing oxyacetylene flame. 1898: German Goldschmidt invents thermit welding. 1898: Klebsiella Schmidt invented copper electrode arc welding. 1900: covered electrode with thin skin coating was invented by Strommel in England. 1900: French Fouch and Picard made the first oxyacetylene cutting torch. 190 1 year: German Menne invented oxygen lance cutting. 1904: Oscar Kjelberg of Sweden established the world's first covered electrode factory-ESAB company OK covered electrode factory. 1904: American Avery invented the portable cylinder. 1907: when the old central railway station in new york, USA was demolished, oxyacetylene cutting was used to save more than 20% of the project cost. 1907: 10 in June, Swede O. Kjellberg perfected the covered electrode with thick coating. Schonherr invented the plasma arc. 19 1 1 year: The first 1 1 mile long oxygen dissolved gas welding pipeline was built by Philadelphia and Suburb Gas Company. 19 12: the first oxyacetylene gas welded steel pipe is put into the market. 19 12: Edward G. Budd, located in Philadelphia, USA, produced the first all-steel automobile body welded by resistance spot welding. About 19 12: In order to produce the famous T-car, Ford Motor Company of the United States completed the modern welding process in its own factory laboratory. 19 13: Avery and Fisher of Indianapolis, USA, perfected the acetylene cylinder. 1916: Ansel schente invented the X-ray nondestructive testing method for welding area. 19 17: During World War I, 109 marine engines captured from Germany were repaired by arc welding, and 500,000 American soldiers were transported to France by these repaired ships. 19 17: Webster &; Nanqiao Electric Company used arc welding equipment to weld 1 1 mile pipe with a diameter of 3 inches. 1919: Comfort A. Adams founded the American Welding Society (AWS). 1924 commemorative photo of activities of American Welding Association 19 19: C.J.Halslag invented AC welding. 1920: Gediehn discovers the thermal effect of plasma flow. 1920: The first steam ship "Fullagar" with fully welded hull was launched in Britain. About 1920: Start repairing some valuable equipment with arc welding. About 1920: Johnson process of resistance welding steel pipe was patented. About 1920: Poughkeepsie Socony, the first oil tanker made by welding, was launched in the United States. About 1920: Flux-cored wire is used for surface hardening. 1922: Prairie Pipeline Company successfully completed the laying of a crude oil pipeline from Mexico to Texas with a diameter of 8 inches and a length of 140 miles. 1923: Stodi invented the pavement. 1923: the world's first floating roof storage tank (used to store gasoline or other chemicals) was built; Its advantage is that the welded floating roof and tank wall form a tank that can be lifted like a telescope, so that the volume of the tank can be changed conveniently. 1924: magnolia gas company adopted oxyacetylene welding technology to build a 14 mile long all-welded natural gas pipeline. 1924: X-ray photography was first used by H.H.Lester of the United States to check the quality of castings to be installed for the power plant of Boston Edison Company with 8.3Mpa steam pressure. 1926: American Langmuir invented atomic hydrogen welding. 1926: Alexander invented the principle of CO2 gas shielded welding. 1926: A.O.Smith Company of the United States pioneered the manufacturing method of coating a protective solid coating (i.e. covered electrode for manual arc welding) on the metal electrode for arc welding by extrusion. 1926: Cr-W-Co solder alloy obtained the first patent on flux-cored wire. 1926: Americans M.Hobart and P.K.Devers obtained a patent for using helium as arc protection gas. 1927: Lindbergh's solo Ryan monoplane successfully flew across the Atlantic Ocean, and the fuselage of the aircraft was made of all-welded alloy steel pipes. 1928: The American Welding Society published the first structural steel welding regulation, Rules for Fusion Welding and Gas Cutting in Building Structures, which is the predecessor of the current D 1. 1 structural steel welding rules. 1930: Georgia Railway Center adopts continuous welding method to lay railways in two tunnels. The welding track will be put into use when the line is connected in two years. 1930: submerged arc welding was invented by Robinov of the former Soviet Union. 193 1 year: The Empire State Building manufactured by all-steel structure welding process was completed. 1933: The first joint welded by arc welding laid a long-distance pipeline without lining structure. 1933: At that time, the Golden Gate Bridge in San Francisco, the highest suspension bridge in the world, was completed and opened to traffic. It is welded by 87750 tons of steel. 1934: Barton welding research institute was established. Evdin OsKalovics Barton, founder of Barton Institute, is the largest all-welded railway bridge on the Dnieper River in Europe-Barton Bridge 1934: The specification for unheated pressure vessels was jointly issued by API—ASME. 1935: Linde air products company of the United States perfected submerged arc welding technology. Wasserman invented low temperature brazing in Switzerland. 1939: Reineck invented the plasma spray gun. 1940: The first all-welded ship "Treasury" was built and launched at the dock in ingels, USA. 194 1 year: American meredith invented tungsten inert gas shielded welding (helium arc welding). 194 1 year: during the second world war, a large number of welding technologies were used in the manufacture of ships, planes, tanks and various heavy weapons. 1943: American Bell invents ultrasonic welding. 1943: for the first time, aircraft manufacturers used atomic hydrogen welding, submerged arc welding and MIG welding to weld hollow blades of aircraft steel propellers. 1944: Englishman Carl invents explosive welding. 1947: The former Soviet Union Bopoшeвич (Vorosevic) invented electroslag welding. 1949: The first fully welded Ford car manufactured by arc welding and resistance welding rolled off the assembly line. 1950: Three Americans, Mueller, Gibson and Anderson, obtained the first patent of MIG welding overspray. 1950: F. Buhorn of Germany discovered the plasma arc. About 1950: Electroslag welding was first used in production in the former Soviet Union. 1953: cold pressure welding was invented by hunter in the United States. 1953: Lyubovski of the former Soviet Union, Shimonoseki and others invented CO2 gas shielded arc welding. 1954: Self-shielded flux-cored wire was put into production in Lincoln Electric Company. 1954: The first nuclear submarine "Nautilus" manufactured by welding technology began to serve in the US Navy. 1954: Baynard invented the tubular covered electrode. 1955: American Tom Crawford invents high frequency induction welding. 1956: Harbin Welding Research Institute of China was established 1956: Friction welding technology was invented by Chudkov of the former Soviet Union 1957: Electron beam welding was invented by Schiller of France. 1957: the former Soviet union cazac invented diffusion welding. 1957: Welding was founded as the first professional welding magazine in China. About 1957: The United States, Britain and the former Soviet Union all use CO2 as shielding gas in the short-circuit transition process of MIG welding. 1960: American Maiman discovered laser, and now laser has been widely used in welding field. 1960: American Airco company introduced pulsed gas shielded metal welding technology. 1962: the patent right of gas-electric vertical welding was awarded to Arcos, a Belgian. 1962: electron beam welding was first used in supersonic aircraft and B-70 bombers. 1964: the patent for coordinated control of hot wire welding and MIG welding was awarded to Manz, USA. 1965: the welding spacecraft Appllo 10 successfully landed on the moon. 1967: Japan Arada invents continuous laser welding. 1967: The world's first submarine pipeline was successfully laid in the Gulf of Mexico. It is manufactured by Krank Pilia Company of the United States by hot wire technology and welding technology. 1968: The 22nd floor of the John Hancock Center in Chicago is welded with the world's highest acute steel structure, with a height of 1 107 feet. 1969: Linde company of the United States proposed the hot wire plasma arc spraying process. 1970: thyristor inverter welding machine comes out. 1976: series of electron beam welding invented by Xintian, Japan. 1980 or so: semiconductor circuits and computer circuits are widely used to control the welding and cutting process. 1980 or so: the printed circuit board is soldered by steam. 1983: The circular top of petal-shaped structure with a diameter of 160 feet on the space shuttle was welded by submerged arc welding and gas shielded welding, and was detected by X-ray flaw detector. 1984: Svetlana Savicka, a female astronaut of the former Soviet Union, conducted welding experiments in space. 1988: welding robots are widely used in automobile production lines. 1990 or so: the inverter technology has made great progress, and the weight and volume of welding equipment have been greatly reduced. 199 1 year: weld the invented friction stir welding, and successfully weld the aluminum alloy plate. 1993: Robot-controlled CO2 laser was used to successfully weld the US Army abrams main battle tank. 1996: A research team of more than 30 people led by Academician B.K. Lebegev of Barton Welding Institute in Ukraine has researched and developed the welding technology of human tissues. 200 1: human tissue welding has been successfully applied in clinic.