国产三级片在线观看,中文字幕免费高清电视剧,成人精品一区二区三区A片用毒蛇,特级西西人体WWWww

Kefengyuan Home > News > Industry news >

Products

Industry news

The water supply equipment will help you understand its deve

Release time:2018-10-22 13:32

In recent years, China's conventional plastic extruders and production lines, with excellent cost-effective gradually popular in the international market. At the same time, China has continuously innovating in the field of advanced extrusion technology, and has developed many new extrusion products. Precision extrusion molding can eliminate the follow-up processing methods, better meet the needs of product applications, while reducing material costs and improving product quality. Nowadays, to meet the needs of precision direct extrusion of plastic products, a variety of mature technologies have been pushed to the field, polymer melt gear pump is one of the important means. This technology has been widely used in chemical fiber, film, profiles, pipes, sheets, cables, composite extrusion, granulation and other production lines.
In order to reduce the production cost, it is often necessary to change the color of masterbatch. If it is necessary to change the product, the open processing area will be opened in a few minutes. The split twin-screw extruder can solve this problem. When changing the color, the barrel can be opened quickly and cleaned manually in a few minutes. Thus, the cleaning material can be used less or no, and the cost can be saved.
To improve labor efficiency, in equipment maintenance, the ordinary twin-screw extruder often needs to remove the heating and cooling system first, and then extract the screw as a whole. The split twin-screw is not necessary, as long as a few bolts are loosened, rotating the worm case handle device lifting the upper part of the barrel can open the whole barrel, and then maintenance. This not only shortens the maintenance time, but also reduces the labor intensity.


給水管設(shè)備

And then understand its special process for plumbing.
In the opposite rotating twin screw feed pipe equipment, the material is acted as a positive displacement transport similar to the gear pump. The reverse twin-screw extruder has low rotational speed, low shearing heat and difficult to decompose materials. Therefore, it does not require high thermal stability of materials, especially suitable for the molding of heat-sensitive materials (such as PVC). Compared with the countercurrent twin-screw extruder, the counter-rotating twin-screw extruder has higher conveying efficiency, better exhaust effect and melting effect. Although the material dispersion and mixing effect is worse than the countercurrent twin-screw extruder, the stable head pressure is stronger, so it is more suitable for direct extrusion products. In addition, the counter-rotating twin-screw extruder can replace the single-screw extruder, which can save the pre-plasticizing and granulating process and directly extrude PVC powder to reduce the cost of products. The counter rotating twin screw extruder is mainly used for extruding PVC pipes. Profiles, plates and prilling. The parallel opposed twin screw extruder has also been applied in large HDHDPE pipe production line.
Anisotropic conical twin-screw PVC extruder is traditionally used for extrusion of PVC products, but in recent years there have been some examples of the application of heterotropic conical twin-screw extruder in the extrusion of polyolefin pipes. Practice shows that it has been basically successful. The aim of this approach is to save energy. A 65-body 132 umm conical twin-screw extruder has a driving motor power of only 37 kW. When extruding polyethylene pipes, the pipe specifications and output can be equivalent to a 75 mm or even 80 mm single-screw extruder, while a 75 mm or 80 mm single-screw extruder has a driving power of at least 90 kW. Foreign countries have already had mature experience in extruding products with parallel counter-rotating twin-screw extruders. In fact, the domestic counter-rotating conical twin-screw extruders with different diameters are still for the consideration of equipment cost. The manufacturing cost of parallel counter-rotating twin-screw extruders is higher than that of counter-rotating conical twin-screw extruders.
In the plastic product processing industry of plastic extruder, the water supply pipe equipment is a kind of teaching production mode with the largest output (about 1/3 of the plastic product output), lower production cost and easier to master production operation. Plastic products extruded by extruders, such as plastic films, pipes, plates, sheets, profiles, wires, cables, packaging bags, rods, nets, composite films, etc., have been widely used in national defense industry, transportation industry, mechanical and electrical products, building materials, agriculture, science, education, health and daily necessities, and have become daily life of people. And an indispensable part of national economic development.



Tel

Top

海角社区成人免费网站 | 亚洲AV无码乱码精品国产懂色AV | 亚洲精品无码无套内射 | 国产黄A片免费网站免费 | 丰满岳乱妇毛片高清码成人 | 婷婷开心激情综合五月天 | 我要看一级黄色视频 | 免费无码婬片69视频软件 | 日本高清无码在线观看 | 安徽搡BBBB槡BBBB | 无码内射高潮视频 | 国产黄色三级片视频 | 女人下边被添全过视频 | 91人人妻人人澡人人爽 | 亚洲美女裸体免费视频 | 网站免费一区二区三区 | 欧美性生交A片免费看 | 在线观看无码视频 | 欧美午夜精品一区二区蜜桃 | 黄色视频免费看午夜一级片国产 | 精品国产自在精品国产 | 少妇性l交大片免汤芳 | 先锋影音资源女人一区二区三区 | 鲁大师在线观看日本电影 | 国产人妻精品一区二区三水牛影视 | 蜜桃av噜噜一区二区三区 | 免费一级无码婬片A片APP直播 | 亚洲熟女内谢视频18 | 亚洲高清中文字幕 | 91久久久无码精品不卡A片直播 | 91人妻无码一区二区三区 | 美女赤裸视频网站不卡免费观看 | 日韓色情网站免费视频 | AV免费在线观看网址 | 国产精品 久久久精品软件 中文字幕在线观看一区二区 | 日本中文字幕无码 | 日本成人电影中文字幕 | 日本一线二线在线观看 | 91最新国自产拍蜜臀浪潮 | 国产原创9l大胆老熟女 | 国产真人真事毛片视频 |