Hydrostatic extrusion technology has a history of nearly a hundred years. However, in the process of large-scale and industrialization, the development speed has been slowed down due to the limitation of higher-strength structural materials. The practical application of this technique has been facilitated with advances in materials science. The use of hydrostatic extrusion technology to extrude Titanium Hex Nut has outstanding advantages. In recent years, superconducting materials have developed in the direction of large sections. Due to the increasingly high requirements for continuous steepness, the size and weight of the ingot must be increased. In this way, it is difficult to use ordinary extrusion equipment, and the use of hydrostatic extrusion technology has many advantages.
During metal processing, it is desirable that the workpiece be in a state of triaxial compressive stress, as this facilitates the plastic deformation of the metal and eliminates surface cracks and defects in the product. In addition, it is also required to be in a good lubrication state during processing to reduce the loss of function. If the hydrostatic extrusion technology is used, the above two purposes can be met.
1. The hydrostatic extrusion of Titanium Elbow is in the process of frictionless deformation. The friction between the ingot and the extrusion cylinder is the main obstacle to metal deformation. When hydrostatic extrusion is used, the high-pressure liquid separates the ingot from the wall of the extrusion cylinder, and at the same time, some high-pressure liquid enters the die hole, and the extruded product is also separated from the die wall. Therefore, the friction coefficient can be as low as 0.01 or less, which also greatly reduces the power loss and improves the surface accuracy of the product.
2. Increase the length of the bad ingot of the titanium screw In the traditional extrusion method, 50% of the extrusion force is used to overcome the friction force between the ingot and the extrusion wall. The magnitude of the friction force is proportional to the toughness of the ingot. Therefore, the length of the ingot is limited. If hydrostatic extrusion is used, it is in a frictionless extrusion process, therefore, the length of the ingot can be increased. For example, for the same tonnage extruder, the output of hydrostatic extrusion can be more than three times higher than that of ordinary extrusion.
No comments:
Post a Comment