How to improve the finish of copper profile

As the use of present cupreous product more and more extensive, how does the smooth finish of surface of abnormal copper material rise everybody understands clear?

First, from the mold design and manufacturing aspects to ensure the surface brightness of the product flow channel structure design of the head should be as far as possible to ensure that the mouth die section at each part of the material flow rate is consistent, the speed of the inner rib can not differ too much from the outer wall (generally not more than 15%), and the thickness should not exceed 2/3 of the outer wall thickness; The cavity surface of the mold should achieve enough machining accuracy, and the surface roughness should be above RA0.2mm. It is recommended to electroplate the surface of the stereotyped die. The water-gas structure design of the molding die should ensure sufficient cooling, uniform, enough adsorption, and can be set at the entrance of the molding die "brightness hold plate", in order to improve the profile visible surface brightness; The design of mold strain variables should coincide with the rheological state and production speed of materials as much as possible.

Reasonably adjust the extrusion process to improve the surface brightness of products. In the actual production process, according to the plasticizing state of materials, adjust the process temperature, speed and pressure under the ground to ensure good plasticizing of materials, and on this basis, appropriately increase the temperature of the die. If a separate heating zone (generally about 10mm in length) is set at the exit of the mouth die forming section to independently control the temperature, it will be more favorable to improve the surface brightness of products.