一、关于铝板因分流筋调集不良构成的功能降低应适当增加筋与外外表、筋与筋汇流处的长度,或许增大紧缩比来处理,模头压力的改动能够通过改动模头平直段长度来调整流料阻力。
1. As for the reduction of the function of the aluminum sheet due to the poor mobilization of shunting bars, the length of the bars and the outer appearance, the confluence of the bars and bars should be increased appropriately. Perhaps the shrinkage ratio should be increased to deal with it. The change of the die pressure can adjust the flow resistance by changing the length of the flat section of the die head.
在模具规划阶段可选择不一样的紧缩比来改动挤出压力,但有必要注意机头紧缩比要与挤出机螺杆的紧缩比相适应;还能够通过改动配方,调整挤出工艺参数,增加多孔板来改动熔体压力的巨细.
In the stage of die planning, different shrinkage ratios can be chosen to change the extrusion pressure, but it is necessary to pay attention to that the head shrinkage ratio is compatible with the screw shrinkage ratio of the extruder, and the melt pressure can be changed by changing the formula, adjusting the extrusion process parameters and increasing the porous plate.
二、口模出料不均匀,构成型材壁厚薄不一致,或许密实度不一致.这也就构成了型材两个面之间的力学功能上的不同,至于壁薄等非标型材这儿就不再多说.
Secondly, the uneven discharge of the die, the inconsistent thickness of the wall and the inconsistent density of the profiles, may be inconsistent. This also constitutes the difference of the mechanical function between the two surfaces of the profiles. As for the non-standard profiles such as the wall thickness, there is no more to say here.
三、口模截面规划不合理,尤其是内筋的分布和交界面视点的处理.这样会构成应力会合表象存在,需要改进规划和消除交界面处的直角和锐角.
Thirdly, the section planning of die is unreasonable, especially the distribution of internal reinforcement and the treatment of interface viewpoint. This will constitute the appearance of stress convergence. It is necessary to improve the planning and eliminate the right and acute angles at the interface.

四、定型模的冷却速率.冷却水温往往没有导致满足的重视,冷却水的作用是将型材拉伸的大分子链及时冷却定型,到达运用意图.
4. Cooling rate of profiling die. Cooling water temperature often does not lead to satisfactory attention. The function of cooling water is to cool the macromolecular chain stretched by profiles in time to reach the purpose of application.
五、模头压力缺乏.模头处压力巨细是直承受模具的紧缩比,特别是模具平直段的长度来抉择的.模头的紧缩比太小或平直段太短都会构成制品不细密,影响物理功能.
Fifth, the die pressure is insufficient. The pressure at the die head is determined by the contraction ratio directly withstanding the die, especially the length of the straight section of the die. Too small the contraction ratio of the die or too short the straight section will constitute the product not compact, affecting the physical function.
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