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The working principle and material of the wrench
Hits:Updated:2016-01-05 10:01:12【Print】
| Wrench is also a kind of railway accessories. Use of the lever principle screwing bolts, screws, nuts and other thread holding tight bolts or nuts openings or sets of holes firmware hand tools. Wrench usually at one end or both ends shank system have clip shank applied handle part of the external force is applied, the twist can be turn bolts or nuts holding bolts or nuts openings sets of holes. When in use, the external force is applied on the handle along the thread rotation direction, and the screw bolt or the nut can be screwed. Wrench is usually made of carbon structural steel or alloy structural steel. 1: chrome vanadium chemical symbol CR-V, is of good quality steel; 2 carbon steel: the quality of general, the market circulation of more |
