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This method has been widely used in titanium rod production. One of the most effective ways to improve the fluidity of titanium rods and reduce deformation resistance is to increase the preheating temperature of the mold. Isothermal die forging and hot die forging have been developed in the past 20 to 30 years at home and abroad.
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When die forging with a press under the same conditions as the unit pressure of the forging hammer. It can reduce the heating temperature of the blank to 50-100℃. In this way, the interaction between the heated metal and the periodic gas and the temperature difference between the blank and the mold are also reduced accordingly, thereby improving the uniformity of deformation, the uniformity of the structure of the die forging is also greatly improved, and the consistency of the mechanical properties is also improved.
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Reduce the deformation speed and increase the value of the most obvious surface shrinkage. The surface shrinkage is the most sensitive to structural defects caused by overheating.
