Plastic pipe production line extruder this can do efficient, continuous extrusion molding production of plastic products machinery and equipment, its core parts for the screw, screw “hold dead” phenomenon is very serious equipment failure. If in the actual production process, there will not only interrupt the production process affecting the quality of the product and yield, but also on the extruder equipment causing irreversible equipment damage.

As a company with more than 20 years of experience in the production of extruders and extruder production line equipment, it is recommended that the phenomenon of screw “holding” should be immediately stopped to deal with. First of all, it should be noted that if the extruder if the screw stops, the current to improve the protection device, generally does not cause excessive equipment damage. But if the extruder equipment protection device failure, extruder screw holding failure is not necessarily the screw directly stop rotating, most cases are still able to rotate the screw, but the speed of rotation slows down, this time the damage to the equipment is greater, and now the staff need to do a good job in time to determine the work, for example, there is a shrill metal scraping or the host current increased dramatically, it should be shut down immediately.

Plastic pipe production line extruder failure, we must first determine the cause of the failure, generally we can analyze and deal with the following points:

1, for the old extruder equipment, we can prioritize the thought of a serious deformation of the screw or barrel phenomenon;

2, if the extruder used in the plastic raw materials mixed with too much foreign matter, especially foreign matter for the metal foreign matter, it is very easy to cause screw jamming, at the same time will cause irreversible damage to the screw and the barrel of the big irreversible;

3, extruder start-up failed to do a good job of pre-production preparations, such as barrel temperature is too low, the barrel residual material is not completely melted or screen changer clogging, in this case the risk of start-up production caused by the barrel of molten material pressure is too high may cause screw deformation, and ultimately lead to screw jamming failure;

4, screw and barrel design is unreasonable, such as screw design compression ratio is too large or screw and barrel materials used in the thermal expansion coefficient difference is too large. This two cases in the screw and barrel material selection is unreasonable, sometimes we can modify the screw, core cooling to solve the problem.

In fact, the plastic pipe production line extruder screw “hold dead” phenomenon is relatively rare, as long as the failure can occur in a timely manner downtime will generally cause excessive losses. I hope this article can help you.