تفاصيل الشركة
  • Dongguan Longwang Hardware Co.,Ltd

  •  [Guangdong,China]
  • نوع العمل:الصانع , شركة تجارة
  • Main Mark: الأمريكتين , شرق أوروبا , أوروبا , شمال اوروبا , غرب أوروبا
  • مصدر:41% - 50%
  • موتس:ISO9001, TUV
Dongguan Longwang Hardware Co.,Ltd
معلومات الصناعة

Socket wrench products

2018-12-29

Classification of a socket wrench:
In terms of size, there are three specifications, "1/4", "3/8" and "1/2" respectively. "1" means "inch" and "1" is equal to 25.4mm. (2) according to the length: long sleeve, short sleeve, e-shaped sleeve
(3) edge: 6 corners, 12 corners, 4 corners; (4) appearance: single groove and double groove; Knurling; Straight; Nickel and chrome plating, etc. (5) USES: there are manual socket wrench and pneumatic socket wrench (black, chrome molybdenum steel) points (6) according to the disassembly screw is different: hexagon socket, the outer plum sleeve; Hexagon socket, hexagon socket, 12-flower socket; E type sleeve, pentagonal pressure with sleeve, pentagonal hollow pressure with sleeve, four Angle sleeve, etc.
Secondary surface treatment
(1) bright chromium: like a mirror, very bright (2) chromite: dull (3) electrophoresis: black, bright. Under the action of external dc power supply, charged particles move towards the cathode or anode in the dispersed medium in a directional way, which promotes the separation of substances. (4) phosphating: black, but dull. The sleeve is immersed in a phosphating solution and deposited on the surface to form a layer of water-insoluble crystalline phosphorus, which is the conversion process of phosphate.
Iii. Production technology
Blank (there are various specifications)-- grinding (removing burr, etc.)-- turning (mainly forming)-- grinding the surface -- engraving (such as knurling, LOGO printing, etc.)-- heat treatment (to increase its hardness)-- electroplating (nickel or chromium plating, etc.)-- black robbery, etc.
Four distinctions between good and bad
(1) see the surface: whether there are rough edges, whether the specifications meet the size standards, whether there are scratches, etc. (2) endogenous: use special tools to measure the torque and hardness; Measure size; Salt spray test, etc.

Note: when the hexagon or twelve-angle opposite side size of socket wrench is less than or equal to 32MM, its hardness value is not lower than HRC39, and when it is greater than 32MM, its hardness is not lower than HRC35.

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