Plunger Method Pe-xe Pipe Production Rate Increase Method - Plunger Method, Pipe - Plastic Industry

Plunger Production PE -XE pipe has the advantage of a single piece of equipment investment

, production process is simple, no follow-up cross-linking, etc.. However, this method of production there is one important drawback is that production efficiency is low, the single-tube production line speed is extremely low. Screw Law Plastic Pipe Material production speeds up to 20 single-pipe m / min or more, but the plunger method PE -XE pipe production rate of a single pipeline is generally not more than 1.5 m / min. This paper focuses on the production line PE-XE restricting the speed of production factors and proposed to increase the speed of solution. Plunger method PE-XE line speed stamping method works out of the plunger method pipe production line PE-XE key technology is the use of Crank to crank continuous rotary motion into reciprocating motion of the plunger up and down intermittently; plunger will material intermittently punching into the flow passage through the structure optimized in turn flow into the solid batch of raw materials into a continuous extrusion of viscoelastic state pipe PE-XE parison. This process and the screw Extruder Works are very different. First, the screw extruder is the screw component of work for continuous rotation, and the plunger out of the work of the component method is to do reciprocating plunger, continuous high speed rotation can be smooth, while the reciprocating motion The faster the movement the greater the vibration. Second, PE-XE very high melt viscosity, which is to be extruded by reciprocating movement causes, such a high melt flow rate when the flow is restricted. Third, PE-XE melt in the mouth mold must be long enough time, can the peroxide decomposition and had to complete the crosslinking reaction with PE. Factors affecting the production rate of the three in the first host to optimize the design of the RAM to achieve optimal production conditions. Pushing the plunger and plunger speed of activity is directly proportional to the frequency and stroke. In general, the higher the frequency, the greater the stroke, the greater the push feeding amount. However, the improvement of the two devices will also increase the vibration. The optimal design and the optimization value of the actual production test, frequency of 4-8 times / s, stroke 30-40 mm. PE-XE melt viscosity change of parameters for small adjustments can be made by a certain formula of raw materials to improve, but can melt and by improving Mold Surface friction properties to increase production speed. The third is a most worthy subject of study. This one is not solved, no matter how good the two can not be improved significantly increase production. For PE-XE pipe thoroughly after the completion of the crosslinking reaction from mold, a mold to remain in sufficient time, two have enough temperature, the three the number of copies to be appropriate for online delivery. The mold temperature is limited, it is impossible to rise above the temperature of decomposition. Solutions to improve production speed can be obtained through the above analysis of three to improve the plunger pipe production stamping PE-XE effective programs: optimal piston stroke and frequency; join Additive To improve the friction properties of the melt and mold; modest increase mold temperature, longer length of die and mandrel. After more optimized, 20 1.9 pipe production speed can reach 1.8 m / min.

by: gaga

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