قطعات تراش اتوماتیک ماشینکاری تیتانیوم CNC

Surface cooling forging: This forging method is also called center compaction method and hard shell forging method. After the billet or ingot heated to the initial forging temperature is released from the furnace, it is forced to cool by blowing or spraying. When the billet surface The temperature is cold 700800 degree ; immediately, the temperature of the core is still very hot, and the temperature difference between the inside and the outside can reach 250350 degree . The surface is like a "hard shell, low temperature, high resistance, and not easy to deform; and The core surrounded by the "hard shell" has high temperature, low resistance and easy deformation. Therefore, when the billet is forged along its axis, the core is under strong three-directional compressive stress, which is similar to closed die forging. The same deformation will help the pore defects in the forging center. If you turn it over 90 degree and press it again, the center compaction effect will be better.

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