| 单词 | projection welding |
| 释义 | > as lemmasprojection welding projection welding n. a method of welding in which projecting points in the components are used as welding sites. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > [noun] > welding > types of butt welding1878 lead burning1886 arc welding1890 thermite process1905 thermite welding1906 resistance welding1908 spot welding1908 seam welding1917 fusion welding1918 projection welding1918 stud welding1918 metal arc welding1926 pressure welding1926 metallic arc welding1927 flash-butt welding1933 flash welding1933 stitch welding1934 rightward welding1936 block welding1943 submerged-arc welding1945 friction welding1946 T.I.G.1960 microwelding1962 1918 D. T. Hamilton & E. V. Oberg Electric Welding iii. 119 The welding of sheet metal is not restricted to one spot at a time, as any reasonable number of welds can be made at one operation by the method known as ‘point-’ or ‘projection-welding’. 1975 G. Bram & C. Downs Manuf. Technol. ii. 63 In projection welding the component is shaped to provide localised current flow, concentrating the welding heat at the areas of projection. 1994 Appliance (Nexis) Apr. 6 In projection welding, the procedure is designed to concentrate the thermal energy of the welding process locally and to complete the operation before the welding heat can spread to surrounding areas. < as lemmas |
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