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How to repair industrial aluminum profiles extrusion die?

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Update time : 2023-03-09 17:42:02
The main content of the extrusion mold correction of industrial aluminum profiles includes: Adjust the proportion of metal flow distribution (such as: mold shunt hole or diversion groove size adjustment, electric erosion drainage groove depth adjustment, etc.), adjust the contact friction coefficient, hinder interception and other methods (such as: And adjust the length of the die hole working belt and other methods to change the metal flow out of the die hole speed, so that the metal evenly flow out of the die hole, the production of qualified extrusion products. Therefore, mold repair personnel must master the relevant inspection technology, in order to correctly analyze and judge the causes of product defects, so as to carry out effective mold correction.
The friction between the metal and the die is composed of three parts: The contact friction between the metal and the die surface, the contact friction between the working band of the die hole, and the relative motion friction between the metal and the metal. Improving the friction condition between metal and die surface can play a role in adjusting metal flow velocity. The metal outflow rate can be adjusted by changing the metal dispensing amount, friction conditions, length of working belt and extrusion speed. Mold correction mainly focuses on adjusting the metal distribution ratio, contact friction conditions and die hole working belt length and other effective methods to change the flow characteristics of the metal, so that the metal uniformly flow out of the die hole, the production of qualified industrial aluminum profiles products. In order to overcome the defects caused by uneven metal flow, it is necessary to study how to make the metal outflow velocity of each part of the industrial aluminum profiles section is consistent, which is the principle that the mold design should follow, is also the basic principle that repair mold personnel follow. Although there are many factors affecting the metal outflow velocity, it can be summarized into two basic factors:
1. Whether the metal distribution flow of each part of the supply industrial aluminum profiles section is appropriate. That is, whether the ratio of the section area of each part of the profile is equal to the ratio of the metal flow of the corresponding supply part;
2. When the metal flow, the size of the friction resistance, when the supply of a part of the metal, the smaller the friction resistance, the profile of this part of the die hole outflow speed is faster, vice versa.
How to repair the industrial aluminum profiles extrusion die, in summary, is: correct analysis and judgment, reasonable adjustment of metal flow rate.
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