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What should be done before opening the PFA tube extruder
- Categories:News
- Author:PFA tube lady
- Origin:DANKAI
- Time of issue:2003-04-27 17:22
- Views:
What should be done before opening the PFA tube extruder
- Categories:News
- Author:PFA tube lady
- Origin:DANKAI
- Time of issue:2003-04-27 17:22
- Views:
The application of PFA extruder includes a series of links such as installation, adjustment, trial run, actual operation, maintenance and maintenance of mechanical equipment. Its application has the common characteristics of common mechanical equipment, mainly reflected in the driving motor and reduction transmission equipment. However, the working system software of PFA screw extruder is extruder system, but it also has its unique features, special attention should be paid to its characteristics when using screw extruder. The installation, adjustment and trial operation of the extruder are generally specified in the operation manual of the extruder. The actual operation mode of the extruder is described as follows:
The actual operation mode of the extruder: the operator must be familiar with the structural characteristics of the extruder, especially to correctly grasp the structural characteristics of the screw, the characteristics of the heating and cooling control instrument, the characteristics of the head and the assembly conditions, in order to correctly grasp the processing standards of the extruder and the correct practical operation of the machine equipment. The actual operation mode of extruding different plastics is different, but also different. The following is a detailed introduction to the actual operation steps and precautions of various products.
Figure 1: Extruder 1 Source: Dan Kai
Prepare the PFA tube extruder before driving.
(1) Extrusion molding of PFA raw materials shall meet the required drying requirements, and further drying shall be carried out if necessary. Bulk particles and mechanical impurities should be removed through raw material screening.
(2) Check whether the water, electricity and gas systems in the equipment are normal, to ensure that the water and gas channels are smooth, whether the electrical system is normal, whether the heating system, temperature control and various instruments are reliable; Assist the machine to run at low speed, check the normal operation of the equipment; Start the vacuum pump to check the normal operation; Add oil in the lubrication area of various equipment. If a fault is found, remove it immediately.
(3) Install the head and shape the sleeve. Head specifications should be selected according to the type and size of the product.
The head should be installed in the following order.
(1) The nose is assembled together and installed as a whole on the PFA extruder.
Before assembling the head, please wipe the grease on the preservation, carefully check whether there are scars and rust spots on the surface of the cavity, polish when necessary, and apply silicone oil on the flowing road surface.
③ Assemble each plate of the head in turn, apply high-temperature grease on the bolt threads, and tighten the bolts and flanges.
(4) The porous plate is placed between the flange of the head to ensure that the porous plate is pressed tightly and does not overflow.
⑤ Adjust the horizontal position of the die opening, adjust the horizontal position of the square head, then tighten the fastening bolts of the flange connecting the head to the PFA tube extruder, and adjust the round head according to the rubber bottom surface of the fixed type.
⑥ Tighten the connection flange bolt, tighten the head, screw back the bolt, install the heating ring and thermocouple, pay attention to the heating ring should be close to the head surface.
⑦ Install the shaping sleeve, adjust in place, check the host, shaping sleeve is aligned with the middle line of the tractor. After adjustment, tighten the fixing bolts. Connect the water pipe with the fixed sleeve and the vacuum pipe.
⑧ Open the heating power supply, the heating head and the machine will be simple and evenly heated. Open the inlet valve of the cooling water and exhaust vacuum pump to the bottom of the hopper and gearbox.
Figure 2: Extruder 2 Source: Dan Kai
When heating, the temperature of each stage is adjusted to 320℃, and then maintained for 30-40 minutes when it rises to 320℃, and then raised to the temperature of normal production. When the temperature rises to normal production, maintain about 10 minutes, so that the temperature of each section of the machine is stable, then the production can be driven. According to the different types of extruder and plastic raw materials, the heat insulation time is not the same. Heat insulation for a period of time, so that the internal and external temperature of the machine to maintain the same, in order to prevent the temperature indicated by the instrument to achieve the specified temperature, but the specific temperature is low. At this time, if the material is put into the PFA tube extruder, the axial force of the machine and equipment will be damaged due to the specific temperature is too low.
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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