15-year precision mould making

   Connector mold parts forging processing from the final forging temperature cooling to room temperature is called the forging cooling process, it is one of the links in the production of forging cooling process. The connector mold parts forging cooling processing according to chemical composition, section size, raw material quality, the different cooling methods.If connector mold parts forging cooling processing is improper, light is forging deformation bending, surface hardness too high and not cutting, may also extend the production cycle; forging crack, flake is serious, the forgings. Cooling after forging of high alloy steel and large forging is very important. Forging cooling methods in common use, according to the cooling speed from fast to slow the sequence into air cooling, cooling, pit cooling (or box cold), grey(or cold), annealing furnace cooling.
  1) air cooling. The connector mold parts forging cooling processing in the shop on the ground, but not on the damp ground or metal plates, but also to prevent the draught, avoid forging cooling too fast and cracks, bending, deformation and other defects. 
  2) stack cooling. The connector mold parts forging cooling processing after forging into stack cooling in still air.
  3) Keng (or cold boxcold). The connector mold parts forging cooling processing
 in the pit or in the box. 
  4) grey (or cold). Yize connector mold parts forging cooling processing in the slag, lime and sand. The slag, lime or sand must be dry. General forging into slag,lime or sand temperature not lower than 500 ℃, forging around the slag, lime or sand thickness shall not be less than 80mm. 
  5) furnace cooling. The connector mold parts forging cooling processing
 on slow cooling in the furnace. Forging furnace temperatureat 600~650 ℃, the minimum should not below 350 ℃. The furnace should be raised to 650 ℃ to be expected, because the temperature is favorable to the diffusion hydrogen. To be forging all into the furnace after furnace cooling by cooling specification. The general temperature not higher than 100~150 ℃. To avoid cold air into the furnace. 
 6) annealing. This is to prevent the cooling heat treatment process of the white spot.