What are the causes of surface quality of profile?

    When the mold meets the requirement of use, the extruded profile surface has groove defects in the screw hole or middle transverse, affecting the surface quality of the profile.It is concluded from practice that when machining the mould, the outlet position of the upper die and the lower mould work zone is adjusted, and the transition requirement is smooth.The working band of the lower hole knife and perforation under the guide groove should be reduced by 0.3-1.0 mm, and the guide groove will be beaten to ensure the suitable metal feed.The thick profile needs to be cut short (to improve) 2mm to ensure the surface quality of the profile.

    Why does extruder mould produce the aluminum profile size is wrong, and the bottom raised?

    Extrusion profiles often have sunken heart of phenomena, resulting in the bedding face caved in, flatness is not up to standard, this is what causes, through a lot of practice, concluded that the aluminium profile extrusion die manufacturing should guarantee the mould slot straight enough, such as pilot run without qualified moderate widened slot.For the deep width of the grooves, as long as the reasonable design of the work belt, the guide groove is processed by the die Angle, the control of the metal velocity can avoid the concave phenomenon;For the width and depth of the groove, the two corners of the guide groove are deepened to ensure the flow of the two corners of the groove is evenly distributed.

    Why is the profile Angle less than the product when producing the Angle aluminum profile?

    When we have a perspective in the production profiles extrusion profiles after stretching, profile Angle smaller than product requirements often 1-3 °, once the situation of the profile Angle for prestressing also appear small Angle (convergent) phenomenon, can adopt the following two simple repair methods: 1. Such as small Angle (convergent) can promote the flow in the medial.2. Solder block can be soldered.Method selection depends on the profile surface treatment.The mould in the design manufacturing, need to shaped hole in the mould for 1-3 ° deformation, deformation profiles changes with the change of outside the circle.

     When the wall thickness is thicker, the profile size has several important factors.

     Production of wall thickness of the thicker material, according to the conventional zoom in water production, profile at the end of a metal underfeeding, lead to errors put shrink, while type mold hole size is consistent, but product size does not conform to the requirements.There are several important factors in controlling profile size.First of all, the design tonnage according to belong to the machine when the guide plate, combined extrusion cylinder with aluminum bar diameter, will pick the maximum optimal circumscribed circle, determined the guide plate into the hole, and increase on both ends of the profiles above metal supply;Second, mold filling weld chamber surface level, both ends to avoid quantity value is big, guarantee the stability of the metal flow on both ends and guarantee on both ends of the profiles above metal supply, is conducive to profile the flatness and surface quality;The final profile hole is predeformed according to the previous production of similar profiles.When designing a new profile, you can look for a similar profile, design the initial parameters with one set of parameters, and then gradually adjust the parameters until the required requirements are met.