The life of the aluminium profile extrusion die has become a major bottleneck in the development of aluminum industry in China. Aluminum extrusion die design and manufacturing costs accounted for about 20% of the total production cost, is the industrial aluminum profiles extrusion are variables, one of the key technology of quick development, involving the material, design, manufacture, testing, repair mold, a lot of link such as management, also is one of development potential of the larger field.

How to better use this kind of mould, we can obtain from the following several aspects.

(1) strictly implement aluminum production process rules

Must be strictly implemented according to the corresponding aluminium profile extrusion process, the boot process aluminum rod furnace middle temperature setting in 530-550 ℃, the outlet temperature is set in 480-500 ℃, holding time should be enough to ensure that the bar is enough temperature and hearts (i.e., is the core and surface temperature), avoid because of aluminium billet temperature duplicity (lack of core temperature) and make die elastic deformation increases, exacerbating "partial wall" and "different length" phenomenon occurs, even in the extrusion die plastic deformation and scrap.

(2) to ensure that the "three heart"

Container center, extrusion rod and visual mold base center must be concentric, there is no obvious phenomenon of eccentric, otherwise it will affect velocity in all parts of the products, and even affect products molding or extrusion products around two length difference is more big to extrusion production.

(3) reasonable choice bearing pad

Must choose appropriate to the size of the double hole is special bearing pad, to reduce the lower die elastic deformation, make the products extrusion molding stability, small size; And must be in the mold before the double hole is special bearing pad to find good backup, in order to avoid the mold after because of bearing pad takes too long to find and make the mould cooling and stuffy car too much;

(4) strengthen the information feedback in the process of aluminum extrusion

A: extrusion die mold information feedback

Plug mold because there are many kinds of, not specially trained people generally difficult to express clearly, best after corresponding repairing mold personnel to look after and find a reason to die.

B: the material molding condition feedback

In addition to have the extrusion die number clearly marked head outside, even in the head logo material is difficult to see the overall situation of flow, such as a, "hand over the material" (say, in the actual process of extrusion is caused two holes inside the lateral slow fast); B, is "discharge phase" (say, in the actual process of extrusion is caused two holes inside fast lateral slow); Short c, long "left right" said left A long right branch short, and to indicate the length difference of the amount of, because they saw the distance to the discharging mouth about 6 meters, so usually in the form of A m / 6 m said the length difference of weight for every 6 meters apart A m, so accurate expression to die right judgment and maintenance.

C: size out-of-tolerance information feedback:

Meet discharging molding but normal size out-of-tolerance condition, must take a sample to do the full correct identification number (extrusion die, discharging direction and size of defects, etc.), including any item id mistake may lead to wrong mould, so must pay highly attention to.

Only then can complete the usage of information feedback, to repair the mold correct judgment and maintenance, in order to improve the efficiency of the mold repair, in order to reduce the model number and unnecessary testing.