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13905809167

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Wang Jiaming (Manager)

Phone:
0580-8231369
Phone:
13905809167
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Fax:
0580-8233517
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www.zsfxlg.com
Shop URL:
http://siamtlr.com/st4107/
Company Website:
www.zsfxlg.com

Supply abrupt screw barrel

Supply abrupt screw barrel
price Negotiable
  • model
  • Brand
  • 生产商 Manufacturer nature
  • 舟山市 Zhoushan City

Updated: 2019-11-04 10:27:43 Views: 1338

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Product introduction
Supply of abrupt screw barrels: mostly used for plastic molding equipment, such as plastic profile extruder, injection molding machine, etc. Screw and barrel are the core components of plastic molding equipment. It is the part that is plasticized by heat extrusion. Is the core of plastic machinery.
Causes of Damage to Sudden Screw Barrels
1. The screw rotates in the barrel, and the friction between the material and the two causes the working surface of the screw and barrel to gradually wear: the diameter of the screw gradually decreases, and the diameter of the inner hole of the barrel gradually increases. In this way, the clearance between the diameter of the screw and the barrel is gradually increased as the two gradually wear. However, because the resistance of the nose and the diverter plate in front of the barrel has not changed, this increases the leakage flow of the extruded material, that is, the amount of material flowing from the diameter gap to the feeding direction increases. As a result, the extruder throughput is reduced. This phenomenon also increases the residence time of the material in the barrel, causing the material to decompose. In the case of polyethylene, the hydrogen chloride gas produced by the decomposition strengthens the corrosion of the screw and barrel. Screw processing
2. If there are fillers such as calcium carbonate and glass fiber in the material, it can accelerate the wear of the screw and barrel.
3. Because the material is not plasticized uniformly, or metal foreign matter is mixed into the material, the torque of the screw rotation torque suddenly increases, and this torque exceeds the strength limit of the screw, causing the screw to break. This is a very accidental damage.
Supply Sudden Screw Barrel Maintenance Precautions:
1. Do not start the machine when the screw does not reach the preset temperature.
2, to prevent metal fragments and debris from falling into the hopper, if processing recycled materials, you need to add a magnetic hopper to prevent iron filings from entering the barrel.
3. When using anti-salin, make sure that the plastic in the barrel is completely melted, so as not to damage the transmission system parts when the screw is retracted.
4. When using new plastic, the remaining material of the screw should be cleaned.
5.When the temperature of the molten plastic is normal, but the black spots or discoloration of the molten plastic are continuously found, the rubber screw should be checked.
6. During processing, try to plasticize the material as much as possible, do not allow metal foreign matter to be mixed into the material, and reduce the screw torque.
查看所有产品 View other products by this company


Zhoushan Jiaming Machinery Co., Ltd. Main Products: Zhoushan Screw, Rubber Extruder Screw Barrel, Injection Mold Screw Barrel Address: No. 24 Dafeng Road, Xiqiao Industrial Zone, Jintang Town, Dinghai District, Zhoushan City, Zhejiang Province 0580-8231369 Mobile: 13905809167 Fax: 0580-8233517
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