What are the requirements for the production of copper mold tube?As the heart of continuous casting machine, the role of copper mold tube is self-evident, an
What are the requirements for the production of copper mold tube?
As the heart of continuous casting machine, the role of copper mold tube is self-evident, and its manufacturing technology requirements are also very high. At present, most copper mold tube are extruded by concave convex die on horizontal or outdated press.
The key to the manufacturing process of copper mold tube lies in its adhesion to the mold. In other words, the inner cavity size must fully meet the manufacturing accuracy of the die.
Factors affecting adhesion:
1. Appropriate wall thickness deformation. When the deformation amount of copper mold tube becomes small during extrusion deformation, its inner surface can not produce enough plastic deformation, and the copper tube is not coated. The deformation becomes larger, the extrusion resistance becomes larger, and it is easy to straighten the formed pipe wall. Therefore, it is very important to select the deformation of copper mold tube.
2. Eliminate the internal stress of copper tube forming. Cause of internal stress: in the extrusion deformation of copper pipe with large wall thickness, the deformation of internal and external surfaces is different. The external metal is elongated, the internal surface deformation is small or unchanged, and the internal stress of the pipe is large. During subsequent processing, these internal stresses are released and the copper tube is deformed. Therefore, technical measures should be taken to eliminate internal stress in the molding process of mold copper pipe.
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