Knowledge

1. The role of lubricants (1) Lubrication. Between the deformed metal and the mold cavity, a lubricating film is maintained to avoid direct contact an

1) Surface pretreatment: For the wire with a dirty surface and many impurities, it must be cleaned and dried before drawing; for the wire with more ox

The wire section is small, the length is long, and the required dimensional accuracy and surface quality are high, which determines that the wire prod

Overview: Looking back at the market in May, the price of industrial wire rods showed a volatile decline. The absolute price index of Mystic industria

The high-strength bolt manufacturing process The processing technology of high-strength bolts is: hot-rolled wire rod - (cold drawing) - spheroidizing

1. Types of surface treatment: Surface treatment is the process of forming a covering layer on the surface of the workpiece by a certain method. Its p

1. Heat treatment method: Different heat treatment methods can be selected according to different objects and purposes. Quenched and tempered steel: h

rolling teeth 1. Purpose: Roll or tap the formed semi-finished product to achieve the desired thread. In practice, the bolts (screws) are called rolli

Screw production process forming 1. Purpose: The wire is cold-forged (or hot forged) to achieve the shape and length (or thickness) of the semi-finish

draw wire 1. Purpose: Cold-drawn the disk element to the required wire diameter. Practically, for some products, it can be divided into two stages: ro

Pickling 1. Purpose: to remove the oxide film on the surface of the wire, and to form a phosphate film on the metal surface to reduce the scratches on

annealing 1. Purpose: Heat the wire to an appropriate temperature, keep it for a certain period of time, and then slowly cool it down to adjust the cr