Media-Ningbo Jinyi Precision Machinery Co.,Ltd

What are the requirements for the manufacturing quality of the screw

Date Feb 21,2022

①The screw of the extruder should be made of alloy steel with small thermal deformation, wear resistance and corrosion resistance. Commonly used materials are 38CrMoAlA alloy steel or 40Cr steel, and repair parts can also be made of 45 steel.②The bla...
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How to disassemble the screw and how to repair it

Date Feb 19,2022

Reasons for screw damage1. The temperature of the raw material is low when plasticizing.2. The raw material is mixed with metal foreign matter or there are many impurities in the raw material.3. The screw idle time is too long.4. Unreasonable selecti...
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How to use the barrel and screw

Date Feb 15,2022

Barrel heating widely adopts resistance heating, and uses thermocouples to achieve segmented temperature control and side detection. Resistance heating is to use resistance to generate heat to heat the barrel, and then transfer the heat to the plasti...
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Repair and strengthening process steps of screw

Date Feb 10,2022

1. Surface cleaningBefore the screw spray welding, the remaining plastic attachments on the screw surface should be cleaned up. The cleaning method is to install the screw on the sprayer and rotate it, bake it with a neutral flame of a spray gun, and...
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What are the reasons for the easy damage of the flat double barrel

Date Jan 26,2022

The flat double barrel rotates in the cylinder, and the working surfaces of the screw and the cylinder are gradually worn due to the friction between the material and the two. The diameter of the flat double barrel is reduced due to friction, and the...
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How to prevent the alloy screw from slipping

Date Jan 22,2022

When the alloy screw is difficult to compress the material at the feed port, or when there is not enough adhesion along the length of the barrel to transport the material, the alloy screw will slip. In the pre-forming stage of the alloy screw, when t...
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Installation and adjustment method of conical double barrel screw

Date Jan 19,2022

1. Install the front and rear supports on the barrel and then put them on the main frame together with the conical double barrel screw. Do not install the large locking nut first. Shake the front support manual handle to move the barrel to the direct...
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Causes of screw wear of conical twin barrels and evaluation of methods to reduce wear

Date Jan 11,2022

Most of the wear of the conical twin barrel screw occurs in the high pressure region, especially in the transition section and the last few turns of the metering section. These areas are prone to wear because the high pressure can cause the conical t...
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Cleaning and maintenance methods of conical twin barrel screw

Date Jan 06,2022

Cleaning method of conical twin barrel screw:1. After mixing the cleaning agent and cleaning materials in proportion, inject them into the end of the conical twin barrel screw.2. Use a brass brush to remove the resin deposit residue, or use a burner ...
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