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PFA tube extruder which four problems!
- Categories:News
- Author:PFA tube lady
- Origin:DANKAI
- Time of issue:2003-04-13 16:23
- Views:
PFA tube extruder which four problems!
- Categories:News
- Author:PFA tube lady
- Origin:DANKAI
- Time of issue:2003-04-13 16:23
- Views:
PFA pipeline extruder is an important material molding processing granulation equipment of PFA. The normal application of PFA extruder can give full play to the high efficiency of the machine and equipment and maintain the excellent working condition. Only by persistent and careful maintenance can the service life of the machine and equipment be increased.
The main fault of PFA extruder is abnormal noise and vibration caused by wear or damage of transmission parts, poor lubrication, foreign body stuck, link blockage and other reasons.
In addition to routine maintenance, maintenance, and overhaul, in order to avoid faults, it is necessary to strictly follow the requirements.
Wear cause of PFA extruder screw
1.Normal wear of PFA extruder screw and cylinder mainly occurs in the feed area and measuring area. The main cause of wear is due to dry friction between the slice particles and the metal surface. Wear is reduced when the slices are warm and softened.
Abnormal wear of the screw and cylinder occurs when the screw ring and foreign matter are stuck. The ring knot is the screw is fixed by the condensed material. If the PFA extruder lacks good protection device, the strong driving force may break the screw, and the stuck will produce abnormal huge resistance, resulting in serious damage to the screw surface and serious scratch of the cylinder, which is difficult to repair. From the design principle, the service life of the cylinder is longer than that of the screw. The normal wear and tear of the cylinder is generally not repaired. Usually the radial clearance between the inner hole of the cylinder and the outer diameter of the screw is repaired.
Screw screw wear solution for PFA extruder.
Local damage of thread was repaired by surfacing with special wear-resistant and corrosion-resistant alloy. Generally, inert gas shielded welding and isoionic argon arc welding are used, and metal spraying technology can also be used for repair. First wear the outer surface of the screw to a depth of about 1.5mm, then weld the alloy layer to a sufficient size to ensure sufficient machining allowance, and finally the outer surface of the screw and the thread side to the outer dimension of the screw to the original size.
2. Abnormal noise.
(1) Bearing damage or poor lubrication may occur inside the reducer, or gear wear, improper installation and adjustment or poor gear meshing. Changing bearings, improving lubrication, changing gears or adjusting gear meshing can solve the problem.
(2) If the noise is a sharp scraping sound, the possibility of the scraping sound of shaft head and transmission shaft sleeve caused by the deviation of the barrel position should be taken into account. It can be solved by adjusting the barrel.
(3) If the cylinder makes noise, it may be spiral bending or the setting temperature is too low, resulting in excessive friction of solid particles. You can straighten the screw or increase the setting temperature.
3.abnormal vibration.
If this situation occurs in the reducer, it is caused by the wear and tear of bearings and gears, bearings or gears can be replaced; If it occurs on the cylinder, it is because the material is mixed with hard foreign matter. It is necessary to check the cleanliness of the material. If necessary, a strong magnetic device is installed in the hopper to absorb the iron filings.
4.PFA extruder screw entrance ring knot blocking material.
This fault is mainly due to cooling water flow or insufficient flow, it is necessary to check the cooling system, the cooling water flow and pressure to adjust to the specified requirements. It may also be that the large return block in the raw material is blocking the feed port, and the feed port needs to be cleaned.
In order to effectively extend the service life of the machine, Shenzhen Dankai by helping customers to solve the problem of PFA extruder screw wear.
For more information about PFA tube extruder, please continue to pay attention to Shenzhen Dankai Technology Co., LTD.
ShenZhen DanKai Technology Co.,ltd. is an intelligent manufacturing enterprise specializing in the R & D, production, sales and service of FEP, PFA, PTFE,PVDF and other fluoroplastic tube, bar, sheet and film products as well as other insulating materials.
The company has a senior research and development team of international standards and imported fluorine plastic products production line, some fluorine plastic products passed ISO9001, SGS, FDA certification.
The main products are: ① pipe: PTFE polytetrafluoroethylene pipe, FEP pipe, PFA pipe, PVDF pipe; ② Heat-shrinkable tubes: PTFE heat-shrinkable tubes, FEP heat-shrinkable tubes, PFA heat-shrinkable tubes, PVDF heat-shrinkable tubes; ③ Plate and rod films: PTFE plate and rod film, FEP plate and rod film, PFA plate and rod film, PVDF plate and rod film; ④ Insulating materials: silica gel, PE, PVC, UPE, etc.; ⑤ Special class: PFA inlet joint, spiral pipe, spring pipe, rotary cut pipe, welding rod, tee, straight, gasket, joint, taper rod, flaring pipe, sealing pipe, braided pipe, corrugated pipe, etc. At the same time can be customized processing production of various specifications of fluorine plastic products.
This article by the teflon tube little sister original, welcome to pay attention to, take you together long knowledge!
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