Forging and welding techniques appeared in ancient Egypt more than 3000 years BC.
Over 2000 BC, the Yin Dynasty in China used casting and welding to make weapons.
Before 2000 BC, China had mastered the brazing of bronze and forging welding of iron. 180 1 year: H.Davy, an Englishman, discovered arc welding.
Edmund David discovered acetylene gas welding.
1856: British physicist James Joule discovered the principle of resistance welding.
1859: 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 a complete series of copper-zinc alloy solders in terms of strength and ductility.
All experiments
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 right 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 first tried to rob a bank by cutting with oxygen and gas.
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 invention certificate of oxyacetylene flame welding.
1898: German Goldschmidt invents thermit welding.
1898: Klebsiella Schmidt invented copper electrode arc welding.
1900: Strohmyer of England invented the thin-skin coating covered electrode.
1900: Fouch and Picard in France 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.
1909: Schoenherr invented plasma arc welding.
19 1 1 year: the first 1 1 mile long oxygen dissolved gas welding pipeline was built by Philadelphia and suburban 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 has completed modern welding technology in its own factory laboratory.
19 13: Avery and Fisher of Indianapolis, USA, perfected the acetylene cylinder.
19 16: Ansel santer invented the X-ray nondestructive testing method for welding area.
19 17: during the first world war, the 109 marine engine captured from Germany was repaired by arc welding, and these repaired ships were used.
Transport 500 thousand American soldiers to France
19 17: Webster &; Nanqiao Electric Company uses arc welding equipment to weld 1 1 mile long with a diameter of.
3-inch pipe
1919: Comfort A. Adams founded the American Welding Society (AWS).
1924 commemorative photo of activities of American Welding Association
19 19: C.J.Halslag invents 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 project from Mexico to Texas, with a diameter of 8 inches and a length of up to.
Laying 140 mile crude oil pipeline
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 floating roof and the tank wall are welded.
A storage tank that can be raised or lowered like a telescope is formed, so that the volume of the storage 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 in the United States to check steam pressure for the power plant of Boston Edison Company.
Quality of 8.3Mpa casting to be installed