The length of the screw is generally not measured in absolute length, but in length relative to the diameter. In this way, screws of different diameters can also be compared in length. This length is called the aspect ratio, represented by L/D. The length of the screw is of course only the part with... read more
The screw needs to be cooled when extruding the material, mainly to ensure the smooth progress of the production and prevent the material from decomposing due to the excessively high plasticizing temperature. For example, cooling in the feeding section of the screw is to prevent the temperature of t... read more
With the rapid development of the world economy, my country's plastic machinery industry has not only achieved the world's number one in product output for 9 consecutive years, but also the plastic machinery industry has greatly improved in terms of scientific and technological level and industrial ... read more
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
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