简体中文 / english National service call: 400-635-8700
contact us

Please contact us

+86-400-635-8700

Or give us a message

message>>

Environmental protection PPR pipe production process should pay attention to

Date:2017-04-19 14:45:45

To keep the material dry, PPR pipe resin bibulous rate is very low, usually without drying treatment.
Processing temperature is too high, will increase the flow of the melt, easy to form, but will cause decomposition, the product shrinkage rate; temperature is too low, melt viscosity, flow is difficult, poor formability. Because of the large elasticity, the shape stability of the product is changed obviously.
Increasing the pressure, PPR pipe usually can improve the fluidity of the polymer, but too high pressure will cause the overflow and increase the internal pressure of the product.
It is necessary to strictly control the speed of the screw, the extrusion speed is too fast, resulting in high friction heat in the cylinder, so that the material temperature increases the physical properties of the product, or even decomposition. It is also important to control the extrusion temperature, which can cause the change of extrusion pressure and melt viscosity, which results in the fluctuation of extrusion velocity.
The traction speed directly affects the wall thickness of the product. Dimensional tolerance, performance and appearance, traction speed must be stable, and traction speed and pipe extrusion speed to match.
福彩3D The PPR pipe extrusion, the need for timely appropriate cooling. Cooling is not timely, the product will be in its own gravity or the pressure of the traction machine under the action of deformation. The cooling rate will also have a great impact on the product, cooling too fast in the pipe internal stress, and reduce the appearance of quality. Cooling water flow is too large, the pipe surface will be rough, resulting in a pit pit; if the flow is too small, the tube surface will produce bright spots; if the distribution is not uniform, the pipe will produce ellipticity.

TypeInfo: Company News

Keywords for the information:

©2014Shandong Liaocheng Taide Industrial Co., Ltd. all rights reserved | | By Manager

彩63彩票登入 乐彩网 河北快3开奖 诚信网投投注 乐彩网手机官网 安徽快3走势 上海11选5走势图 全民彩注册 上海时时乐 乐彩网网址