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Extruders Extrusion Effect
- Oct 10, 2017 -

Extruders Extrusion effect

Single screw extruder need to pay attention to maintenance in order to ensure that the extrusion effect is very good to achieve.

In the use of extruder need to always check the use of raw materials, pure quality, do not allow sand, metal powder and other foreign matter mixed with raw materials and even into the barrel; check the extruder lubricating oil parts, filling lubricating oil, bearing parts work The temperature should not exceed 50 ℃; extruder barrel to have enough constant temperature heating time, do not allow the raw materials below the operating temperature conditions to drive production; screw work, to low-speed start, work for some time, after all normal And then increase the screw speed; if the barrel without raw materials, does not allow the screw for a long time empty operation; often observe the screw drive motor ammeter pointer swing changes, a longer time the motor overload work, immediately stop, find fault causes, troubleshooting And then continue to produce; barrel for the first time after heating to the process temperature, the barrel and the base of the connection bolts should be tightened again; installation of mold and screw, the parts of the contact surface to be clean, without any foreign body, fastening Bolts to be coated with a layer of silicone oil to facilitate the removal of parts; demolition of the extruder is not allowed to hit the surface with a heavy hammer, if necessary, should pad hardwood, Use a hammer to knock hardwood to remove parts.

Clear the extruder barrel, screw and mold on the residue, only with bamboo or copper knife scraper material, not allowed to use steel knife scraping sticky material, but not allowed to use fire barbecue to clean the screw on the residual material. Advantages of twin screw extruder:

1, intuitive understanding of wearing parts of the wear and tear

The twin-screw extruder is easier to open than the single-screw extruder, so that the degree of wear of the threaded element and the inner sleeve of the barrel can be found at any time, so that it can be effectively repaired or replaced. It is not found in the extrusion product problems, resulting in unnecessary waste.

2, reduce production costs

In the case of masterbatches, it is often necessary to change the color and, if necessary, replace the product, open the open processing area in minutes, and analyze the mixing process by observing the melt profile on the entire screw. At present, ordinary twin-screw extruder in the replacement of color, you need to use a lot of clear machine for cleaning machines, both time-consuming, electricity, and waste of raw materials. The split-type twin-screw extruder can solve this problem, change the color, as long as a few minutes can quickly open the barrel, the manual cleaning, so you can use or less cleaning materials, saving costs.

3, to improve labor efficiency

In the equipment maintenance, the ordinary twin-screw extruder often have to first heat, cooling system removed, and then the whole out of the screw. And split-type twin-screw is not used, as long as the release of a few bolts, turn the worm box handle device lift the upper part of the barrel to open the entire barrel, and then repair. This shortens the maintenance time and reduces the labor intensity.