News Center

News Center

Zhejiang Guangming Plastics Machinery Co., Ltd.

02

2021-07

Alloy screw processing process should pay attention to what?

Alloy screw, also known as bimetallic screw, is mainly made of two different metals, which has the advantages of processing economy and high economic efficiency. As an important substitute material, alloy is widely used in daily life and industry. For example, calcium carbonate, high earth, red mud and silica are often added to plastics for modification. Glass fiber, carbon fiber and boron fiber are added for reinforcement.

2021-07-02

10

2021-06

65 cone twin screw commissioning and operation precautions

The test run of the 65-cone twin screw shall be operated by those who are familiar with the process, so as to take measures to prevent accidents in the event of accidents during the test run.

2021-06-10

19

2021-03

Influencing factors of service life of barrel screw

When the barrel screw operates in a relatively harsh environment, the temperature is generally above 200°C. The barrel screw should not only accept high pressure, but also accept the abrasive effect of the melt and the frequent load starting during pre-molding, and also accept great pressure and torque during the operation. The planning, material selection, exterior metal plating such as Cr, Ni, nitriding, spraying or spray welding hardening alloy, as well as materials (such as plastic particle size, masterbatch function) and operation (speed, back pressure, etc.) will affect the service life of the barrel screw. It can be seen that the service life of the barrel screw is mainly related to the raw material of the screw, especially the various appearance processing technologies.

2021-03-19

04

2021-03

Introduction to the method of reducing wear of the barrel screw

The wear of the barrel screw caused by calcium carbonate is mainly abrasive wear. In order to reduce the production cost of profiles and aggregates, more and more calcium carbonate is used in the formula, especially when the amount of additives is large, the content and quality of calcium carbonate have a great influence on the wear degree of the barrel screw. Unreasonable amount of lubricant in the formulation (excessive external lubricant, such as organic wax or stearic acid) will slow down the plasticization process and accelerate the wear process. Care should be taken to minimize damage to the equipment.

2021-03-04

24

2021-02

Processing technology requirements of screw barrel

It is necessary for the screw barrel to meet the following requirements: high temperature resistance, no deformation at high temperature; wear resistance, long life; corrosion resistance, corrosive materials; high strength, acceptable large torque, high speed; good cutting processing Function; small residual stress after heat treatment, small thermal deformation, etc. The screw barrel shall be made of corrosion-resistant and wear-resistant alloy steel. The roughness Ra value of the thread part of the screw barrel is not more than 1.6um on both sides of the thread, and not more than 0.8/um on the bottom groove surface and outer circle of the thread.

2021-02-24

20

2021-02

What are the application advantages of alloy screw?

Alloy screw is a very important means to increase the service life of mechanical parts, it uses ordinary metal materials as the matrix, and the working surface of the mechanical parts uses high-speed ion spray welding double alloy process, combined with another layer of special alloy, to improve the wear resistance, corrosion resistance and other properties of the parts, increase the service life of the parts.

2021-02-20

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