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Screw barrel manufacturing process
Have you ever wondered how is the screw barrel manufactured? Today, I will take you to understand the processing process of screw barrel, let us explore this mysterious world together!First of all, we need to know that the manufacture of screw barrel needs to go through several steps. According to different requirements and specifications, the specific process may be slightly different. But in general, they all include the following steps:1）Tempering…
Teach you how to select and verify the accuracy and stability of injection molding machines?
As one of the pillar industries of light industry, the injection molding industry has penetrated into all aspects of life. As the main equipment for injection molding production, injection molding machines coexist with high, medium and low grades, with a wide range of types and endless application types. Even many professionals in the injection molding processing industry are dazzled and it is difficult to choose the injection molding machine that…
What is the cause of the slippage of the injection screw
For hygroscopic materials (such as nylon), the high water content of the resin can also cause the screw to slip. Improper drying will significantly reduce the viscosity of the material and generate water vapor in the drum, resulting in a reduction in the conveying capacity of the screw. In fact, there are many reasons for slippage, which may be related to high back pressure, overheating or overcooling of the end…
What are the application advantages of cone twin barrel screw in injection molding machine
What are the application advantages of cone twin barrel screw in injection molding machine It can be seen from the extrusion process that the injection screw barrel is operated under high temperature, certain corrosion, strong wear and large torque. Therefore, the conical twin-barrel screw must meet high temperature resistance and not deform under high temperature; wear resistance Long life; corrosion resistance, material is corrosive; high strength, can accept high torque,…
What type of screw barrel is suitable for injection molding manufacturers
Commonly used screws in the market are No. 45 steel, 40cr steel (chrome plated), and 38CrMoAlA nitrided steel. If your product is +glass fiber. When using chrome plating, it will slowly fall off after about 3 months, and the color difference will appear. Nitriding is best. Stainless steel screw cannot be made of glass fiber. Generally, ordinary screws are used for nonspecial materials. Such as PC\PMMA\PA and other materials. barrel…
How much do you know about the causes of extruder screw wear?
Each plastic has an ideal plasticizing temperature range, and the extruder screw barrel processing temperature should be controlled to make it close to this temperature range. Granular plastic enters the barrel from the hopper and first reaches the feeding section. Dry friction will inevitably occur in the feeding section. When these plastics are not heated enough and melted unevenly, it is easy to increase the abrasion of the inner wall…
How to distinguish and correctly apply the screw barrel of the injection molding machine?
The screw is an important component of the injection molding machine. In the production, the screw is responsible for conveying, compacting, melting, stirring and applying pressure to the plastic. The screw required by the injection molding machine can be divided into three types: gradient type, mutation type, and universal type. These three types of screws have their own shapes and functions. The gradual screw is mainly used to process non-crystalline…
How the screw barrel should be used innovatively
After the screw barrel is used for a period of time, the screw edge and the nitriding layer of the barrel (when making a new screw, both the screw and barrel will stop the nitriding heat treatment, so there will be about 30-60 silk oxide layers on the surface 2) when worn in both directions, the gap between the two sides increases, causing partial backflow of the plastic, and the…
What details should be paid attention to for the three small pieces of screw
The three small pieces of screw head play the functions of sealing, mixing, plasticizing and other functions in the entire screw group. It is a relatively important part. The quality problems of many plastic products are closely related to the three small pieces of screw head. There are often many three Failure to deal with the details of small parts has greatly increased the scrap rate of plastic products, and…
How to solve the problem of bending deformation in the extrusion process of products?
The bending deformation of PVC profile is a common problem in the extrusion process. The main reasons are: uneven discharge of the die; insufficient cooling of the material during cooling and shaping, and inconsistent shrinkage; equipment and other factors.It is recommended to solve from the following aspects:1. Ensure the concentricity and levelness of the entire extruder line, and correct the concentricity and levelness of the extruder, die, shaping die, water…
What are the cleaning methods for the extruder screw?
The working condition of the extruder that needs to clean the screw is generally to change the color or restart after the machine has black spots. There are two common methods: one is to wash with raw materials or nozzle materials, and the other is to directly pull the screw for polishing and cleaning.The method of drawing the screw affects the precision of the equipment. Pulling the screw for a…
How to reduce the failure rate of injection molding machine?
When the injection molding machine is working, the injection molding machine parts are like the wheels of a motor vehicle. As long as they are started, they will be subjected to pressure, impact, friction, and extrusion. For the same tire, driving on a flat road and a skilled driver can often prolong the service life of the tire.dAnd when driving on uneven roads with lots of sand and gravel, coupled…