How to correct the deviation of aluminum extrusion die

Aluminum extrusion die numerical deviation in the process, how to correct it?

 

The main contents of aluminum extrusion die modification are as follows:

 

1. Adjust the metal flow distribution ratio (such as mould tapping hole or slot size adjustment, electric erosion depth adjustment, etc.) of the sink, adjust the contact friction coefficient and hinder the intercept method (such as: stop block, etc.), and adjust the die working length, through various methods such as change the flow of the metal in the mould hole rate, make the flow of the metal in the mould even, produce qualified extrusion products. Therefore, mold maintenance personnel should be very skilled in the relevant inspection technology, in order to correctly analyze and judge the cause of product defects, so as to effectively correct the mold.

 

2. The proportion of metal supply is mainly determined by mold designers and manufacturers. When the mold is made, the metal mix ratio is basically fixed. The designer must strive for proper layout. If the distribution is not reasonable, resulting in uneven cross section flow, it will bring certain difficulties to the mold repair, or even cannot repair the mold seriously. For most molds, the friction resistance between the metal and the mold can be changed, although the configuration of the metal is determined. So as to achieve the purpose of adjusting the metal speed.

 

3. The friction force between metal and mold is composed of the friction force between metal and mold surface, the friction force in mold hole working area, and the friction force between metal and metal relative motion. The flow velocity of metal can be adjusted by improving the friction condition between metal and die surface. By changing metal distribution, friction conditions, working band length and extrusion speed, the metal outflow speed of die hole can be adjusted.