博文

Causes of Warping and Deformation of Injection Products

图片
Warping is one of the common defects of plastic products because the shape of the   custom plastic injection profiles  deviates from the shape of the mold cavity. There are many reasons for the warping deformation, which cannot be solved by the process parameters alone. The following is a brief analysis of the factors affecting the warping deformation of injection products. 1. The effect of mold structure on warpage of products. In terms of molds, the main factors affecting the deformation of  plastic injection profiles  are the pouring system, cooling system and ejection system. Gating system. The position, form, and quantity of the gate of the injection mold will affect the filling state of the plastic in the mold cavity, resulting in deformation of the plastic product. The longer the melt flow distance, the greater the internal stress caused by the flow and shrinkage between the frozen layer and the central flow layer; the shorter the flow distance, th...

What Is the Difference between Pvc Electrical Conduit and Plastic Electrical Conduit?

图片
PVC electrical conduit is most commonly used in the current decoration, so if you are not clear about the difference between PVC electrical conduit and aluminum plastic electrical conduit, please see the introduction below. In the decoration process, PVC electrical conduits and aluminum-plastic electrical conduits are more common pipes, and many times do not know how to choose. So what is the difference between PVC electrical conduit and aluminum-plastic electrical conduit? Before introducing the differences between PVC electrical conduit and aluminum-plastic electrical conduit, we first need to understand what is PVC electrical conduit and what is aluminum-plastic electrical conduit. The following  custom plastic cable pipe suppliers  share with you: 1, PVC electric wire pipe (PVC-U pipe) rigid polyvinyl chloride pipe, is made of polyvinyl chloride resin and stabilizers, lubricants and other hot extrusion method after extrusion molding, is an aluminum plastic pipe that has...

Analysis of Cracks And Fractures Of Bellows

图片
From the macroscopic morphology observation and chemical composition analysis results, we know that no metallurgical defects such as slag inclusions, pores, and porosity were found around the corrugated tube cracks; the chemical composition of the corrugated tube complies with the standard requirements. The sensitization temperature range of austenitic stainless steel is 450 ~ 850 ° C. In this temperature range, chromium elements are likely to be enriched near the grain boundaries to form M23C6 type carbides, which causes a chromium-depleted region near the grain boundaries, which makes The corrosion resistance decreases sharply, and intergranular corrosion occurs under the action of corrosive media. Studies have shown that the annealing temperature of Inconel 800 alloy is in the range of 550 ~ 800 ℃. As the annealing temperature increases, the sensitization first increases and then decreases. The working temperature of the failed bellows is about 500 ℃, which is close to the sensitiz...

How Should The Injection Mold Be Maintained?

图片
As the most important molding equipment in the production process, the quality of the injection mold directly affects the quality of the product. Moreover, since the mold occupies a large proportion in the production cost of the enterprise, its service life is directly related to the cost of injection molded products. Therefore, improving the quality of injection molds, maintaining and maintaining them well, and prolonging their service life are important management contents for  custom plastic injection profile  processing enterprises to reduce costs and increase efficiency. 1. First of all, you should equip each pair of molds with a resume card to record and count their use, care (lubrication, cleaning, rust prevention) and damage. You can find out which parts and components are damaged and the degree of wear and tear to provide discovery. And problem solving information, as well as the molding process parameters of the mold and the materials used in the product, in order...

Pe Bellows Installation Construction Process

图片
PE corrugated pipe is made of high-density polyethylene as the main material, so it has the characteristics of light weight, corrosion resistance, good sealing performance, low friction coefficient, etc. PE corrugated pipes are most commonly used for underground cable protection and sewage Rainwater drainage pipes, etc., have very broad development prospects and application potential. The production process of PE bellows is co-extruded by the inner and outer extruders respectively, and it can be molded at one time. It is a plastic pipe with a very smooth inner wall, a corrugated shape on the outer wall, and a hollow layer between the inner and outer walls. Sealing rubber rings are embedded in both ends of the pipe, which has good waterproof and sealing properties. It can be laid on the sections with poor geology, and the construction is very convenient. At present, it is mainly used in communications, telecommunications, cables and other projects. PE corrugated pipe has a unique str...

China's Plastic Extruder Industry Has Huge Development Potential

图片
Customized plastic products supplier  to share with you: In China's plastic machinery market, extruder as an important processing equipment, the development prospect is very optimistic. In the past two years, China's plastic extruder market has made considerable progress and breakthroughs, as shown in the following: the expansion of the emerging markets for extruders, the brand awareness has further expanded, the market competitiveness has further improved, and the proportion of exports to emerging countries It will also be greatly improved. Although China's extruder market is developing rapidly, the proportion of extruder exports is still low. The ever-increasing pressure on raw material costs and energy costs has made energy saving and material saving the focus of the extrusion processing industry. At the same time, extrusion technology suppliers can develop various energy-saving solutions from various perspectives to meet the energy-saving needs of users to the greate...

Cause Analysis and Solution of Common Problems in Cable Extrusion Process (II)

图片
Three burnt ● Scorching phenomenon of  plastic extrusion pc cable conduit (1) The temperature reflects the extremely high temperature, or the temperature control instrument fails, causing the plastic to become extremely hot and scorched. (2) The glue outlet of the machine head has a large smoke, a strong pungent odor, and a crackling sound. (3) Granular scorch appears on the plastic surface. (4) There are continuous air holes at the glue joint. ● Causes of Scorch (1) Plastic scorch caused by ultra-high temperature control. (2) The screw has been used for a long time without cleaning, and the scorched material is accumulated and extruded with the plastic. (3) If the heating time is too long, the plastic deposits will be heated for a long time, which will cause the plastic to deteriorate and scorch. (4) The parking time is too long, and the machine head and screw are not cleaned, causing the plastic to scorch. (5) Change the mold or color several times, causing...