Manufacturing process of inner six angle wrench
Say so complicated, don't die ah, very simple selection of high manganese steel forged six edges, the corresponding length of heating, bending, pickling rinse, dark red (500--700) oil quenching, nonscale is natural black, here is the finished product, the high cost of plating is not good to sell, because people are feeling good is black, here we have a factory is doing business good, very cheap to sell a few dollars a kilogram
The company mainly produces tube expander, pipe expander and special spanner. The products are sold well all over the country, except 30 provinces, cities and autonomous regions of Taiwan province. Tube expander: mainly applicable to the manufacture and maintenance of electric power, petrochemical, metallurgy and shipbuilding industry heat exchanger, heating furnace and steam boiler tubes, the product has a straight cylinder type, flange type, bearing type, adjusting type, control type and other eleven series of more than one thousand kinds of specifications.
Inside the six corners of the board hand are generally hot stamping process, the production process is divided into the following steps:1, 45#, 40Cr and 50# rolled into hexagonal wire.2, blanking, 90 degrees right angle forming.3, quenching and tempering, hardness requirements of HRC43-50.4, surface treatment, oxidation, leather, black, electroplating and so on.
