Dual alloy barrel

NegotiableUpdate on 01/12

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Nature of the Manufacturer: Producers

Product Category

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Overview

The double alloy barrel is made of a special formula of high nickel alloy and tungsten carbide, which is formed by alkane bonding. Has characteristics of wear resistance, corrosion resistance, high temperature resistance, and high pressure resistance;

Product Details

　　Dual alloy barrelFeatures:

1. Screw manufacturing should use wear-resistant alloy steel with minimal deformation in high-temperature environments. After precision machining, the working surface of the screw should be wear-resistant and corrosion-resistant. Therefore, the threaded part of the screw should be treated with nitriding and plated with a hard chromium layer, with a hardness of 700-800HV.

2. During idle testing, be careful not to let the screw run for a long time without air; During the trial operation and debugging, the idle running time should exceed 3 minutes

3. The disassembly of the screw can generally be done by pushing out the screw from the rear or using a tool to pull out the screw.

4. After cleaning the screw and its connected components, the working surfaces should be inspected for scratches and friction damage. Minor scars should be repaired with fine sandpaper or oilstone.

5. When serious wear and deep grooves appear on the working surface of the screw, the cause of the damage should be analyzed and identified, the fault should be eliminated to avoid similar phenomena from happening again, and then the worn scars should be treated. If both the screw and the barrel are severely worn, the actual clearance between the two components should be checked first. If it exceeds the standard requirements by a lot, the screw should be replaced at this time.

6. When assembling the screw, a layer of molybdenum disulfide heat-resistant grease should be applied to the joint surface with other parts to facilitate the next disassembly.

7. Temporarily unused screws should be coated with a layer of protective oil after surface cleaning, wrapped and hung in a dry and ventilated place.

　　Dual alloy barrelPrecautions

a、 After the extruder barrel is heated up, remove the nozzle and barrel head connector, and take out the screw. Use a copper mesh brush dipped in release agent to scrub the inner wall of the machine barrel, then tie a cloth strip to a long wooden stick to clean the inner hole of the machine barrel, and inspect the cleanliness and damage of the inner wall using the light method.

b、 Except for inspectionExtruder barrelIn addition to checking for cleanliness and scratches on the inner wall, the wear condition should also be checked. The method is to lower the barrel to room temperature, use a barrel measuring instrument, and measure multiple points from the front end of the barrel to around the hopper mouth, with a distance of 3-5 times the inner diameter. When the wear is severe, it is possible to consider heavy barrel and correspondingly increase the size of the screw.