Strictly speaking, corrosion and wear are two completely different phenomena. The prerequisite for wear is the existence of forceful action and relative motion. Corrosion is just a chemical reaction. Even if the screw does not rotate, the melt will cause corrosive damage to the surface of the screw.... read more
For hygroscopic materials (such as nylon), the high water content of the resin can also cause the screw to slip. Improper drying will be significantly lower The viscosity of the material and the generation of water vapor in the barrel will reduce the conveying power of the screw. In fact, there are ... read more
The clamping process is usually divided into three/four stages, roughly fast/slow-low pressure-high pressure; Quick clamping, according to the structure of the mold, it is flat, or there is a slider. Different molds first set the pressure/speed/position during rapid clamping, and set the appropriate... read more
The front and back doors of the injection molding machine are equipped with limit switches for protection. At the beginning of injection molding, the front and rear safety doors must be closed first. Generally, the rear safety door is closed for a long time, and the front safety door is equipped wit... read more
(1) Manual whetstone grinding, strip whetstone plus kerosene as lubricant or coolant. The general order of use is #180~#240~#320~#400~#600~#800~#1000. Many mold manufacturers choose to start with #400 in order to save time. (2) Semi-precision polishing Semi-precision polishing mainly uses sandpaper ... read more
In the process of extrusion of plastic pipes, a series of problems are often encountered. On the surface of the high-pressure hose, in addition to cracks, black bars, moiré and other problems, there are also bubbles in the high-pressure hose. The bubbles are generated in the plastic hose, which is g... read more
Copyright Ningbo Beilun Highsun Machinery Co., Ltd. ALL rights reserved
Technical support: HWAQ
China Plastic Injection Molding Machine Manufacturers
EN
English
عربي
España
русский
No.36 Yongjiang South Road, Beilun District, Ningbo,315800, China
0086-188 6861 6288
0086-574-86961178
haixiong@highsun-machinery.com