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Causes of uneven wall thickness in PE pipe and water supply pipe production


Release time:

Jun 21,2019

PE pipe extrusion production has the characteristics of large output and high production efficiency. The existing production pipeline products mainly PE water supply pipe, PE gas pipe, pipe fittings, PVC pipe, PE-RT floor heating pipe and other series. So what is the reason for the uneven wall thickness of the PE water supply pipe? Reason 1: 1) The wall thickness of the section around the PE pipe is uneven, and the deviation is small, and the whole pipe has thickness in the extrusion. The reason is that the extrusion amount of the extruder or the pulling speed of the tractor periodically changes. Reason 2: 2)PE pipe around the section wall thickness has obvious deviation, reason

PE pipe extrusion production has the characteristics of large output and high production efficiency. The existing production pipeline products mainly PE water supply pipe, PE gas pipe, pipe fittings, PVC pipe, PE-RT floor heating pipe and other series. So what is the reason for the uneven wall thickness of the produced PE water supply pipe?
Reason one:
1) The wall thickness of the section around the PE pipe is uneven, and the deviation is small, and the whole pipe has thickness in the extrusion. The reason is that the extrusion amount of the extruder or the pulling speed of the tractor periodically changes.
Reason two:
2) There is obvious deviation in the wall thickness of the section around the PE pipe, because the center of the die and the mandrel is not aligned during installation, or the tightness of the die bolt and the pressure plate bolt is inconsistent. Therefore, the installation of the mold is not a one-time bolt tight dead, should be clockwise to each bolt tight dead, should be clockwise to each bolt fully tightened and then loose a circle. Tighten each bolt clockwise until the heating temperature reaches the specified temperature. In addition, the flow of logistics is closely related to temperature, and the heating ring often leaves a large number of pores to cover the edge of the heating ring, or the contact surface between the heating ring and the machine head and the mold is not tight, there is an interval of air medium, heating is not uniform, resulting in the deviation of the material flow velocity. If the head is small, you can adjust the thickness deviation by adjusting the bolt or turning the heating ring in the direction of rotation. Make the flow rate basically consistent.



Domestic largePE pipe, PE water supply pipe production and sales manufacturers→ Shandong Yushun Pipeline Engineering Co., Ltd

 

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