1. Production process control
After cutting the rod, use the air duct to blow off the dust on the aluminum rod, reduce the amount of dust that is brought in, and reduce the source of dragging and slag;
The thickness of the residual pressure should be enough. If the pressure is too thin, the dead zone of the aluminum rod will be wound into the end of the profile, causing dragging and slag;
The extrusion speed should be effectively controlled, especially the end should be decelerated to prevent turbulent flow from being caught in the skin impurities;
The cylinder is cleaned every time of production.
2. Adjustment of equipment and equipment
If the extrusion rod is not centered, the wearer will wear the material during the movement of the squeeze rod, which will cause defects such as big belly and deformation.
The center position of the mold base, the upper, lower, left and right sides are to be centered. It is strictly forbidden to move the mold base for production. If the upper and lower parts are not centered, the machine repair should be contacted for maintenance;
The size of the pressed cake should be regularly tested and replaced. For the pressed cake of the rolled edge, it will also cause blackening, slag inclusion, etc.;
Long-term use of the gallbladder, deformation of the big belly, etc., will also result in batch scrapping. This kind of scrapping occurs in production and needs to be paid attention to. The new material must remove the dirt inside the bladder and polish the inner liner. Installed on the machine.
3. Adjustment of mold design and production plan
For the flat mold, if it is necessary to install a baffle for diversion, this narrows the feed port and clamps the dead zone;
The material bile must fully surround the mold diversion hole. The squad leader should compare each set of molds. If there is a phenomenon that the diversion holes are too large, it cannot be produced on the machine.
When planning the production, it is necessary to plan according to the original machine that molds the mold opening (the same as the diameter of the rod can be used), and do not appear the mold of the big rod production big rod machine.