Around PTFE BBQ Grill Mats 1900: Hans Goldschmidt of Goldschmidt AG West Germany (Orgotheus Inc. 1896: According to reports, the first electric welded pipe was produced in Cleveland, Ohio, USA. L. Kjellberg perfected the welding rod (the metal rod used as the filler metal and conductive electrode is coated with a coating with functions such as arc stabilization and protection). Frenchman Le Chatelier received the certificate for inventing the oxyacetylene flame. 1904: American Avery invented the portable cylinder.
The British Brown used oxygen and gas cutting for the first time to rob a bank. The austenitic manganese steel invented by Englishman Robert A. Hadfield and named after him was patented. R. L.Russian Benardos Olszewski greatly developed carbon arc welding technology. American C. 1856: James Joule, an English physicist, discovered the principle of resistance welding. Coffin proposed the concept of welding in an oxidizing medium. 1881: French De Meritens invented the earliest carbon arc welding machine.
American John A. 1881: Dr. 1885: American Elihu Thompson obtained a patent for resistance welding machine. 1907: When the old Central Railway Station was demolished in New York, USA, the use of oxyacetylene cutting saved more than 20% of the engineering cost. Thurston of the United States completed all experiments on the strength and elongation of a full range of copper-zinc alloy brazing alloys in six years.1836: Edmund Davy discovered acetylene gas.
Tobin obtained a patent for a high-strength solder called Tobin.USA) invented thermite flux welding, a method of welding by an external heat source to cause aluminum powder and metal oxide to start an exothermic reaction. The French Fouch and Picard produced the first oxyacetylene cutting torch. Americans Willson and Morehead produced calcium dicarbide. In 1890; American C. German Menne invented oxygen spear cutting. H. 1895: Bavarian Konrad Roentgen observes the phenomenon of X-ray generation when a beam of electrons passes through a vacuum tube. Coffin used light welding wire as electrode for arc welding for the first time. Woehler produces acetylene gas from calcium dicarbonate