Detailed introduction

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2022

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Renovation process of alloy barrel and its wear reason?


  Alloy barrelIt is widely used, because it has various advantages and characteristics, it is recognized by everyone, and it is easier to operate. Only in strict accordance with the operating regulations to use, in order to achieve good results, let's understand the next alloy barrel renovation process and its wear reasons.

 

合金机筒

 

We still need to know a lot of knowledge points before using alloy barrel, because only when you master these can you operate better. Generally speaking, the torsion bar of alloy barrel should be considered according to the actual inner diameter of the barrel, and under the condition of normal clearance with the barrel, it should be manufactured according to the new outer diameter deviation. Then also know that some thread surfaces are treated with wear diameter reduction, thermally sprayed wear-resistant tungsten carbide alloy, and then ground to a certain size. In addition, it is necessary to know that the alloy barrel is welded with a wear-resistant tungsten carbide alloy at the worn threaded part. According to the degree of surfacing welding 1~2mm thick surfacing, and then grinding size. This wear-resistant tungsten carbide alloy is composed of C, Cr, Vi, Co, W and B materials, which can increase the resistance to wear and corrosion. The next thing to know is how it works. Each plastic has an ideal plasticizing processing temperature range, and the processing temperature of the barrel should be controlled to be close to this temperature range. Granular plastic enters the barrel from the hopper. First of all, it is suggested that everyone must also arrive at the feeding area. Dry friction inevitably occurs in the feed section. When these plastics are not heated enough and melt unevenly, it is easy to cause increased wear on the inner wall of the barrel and the surface of the screw. The big ones.

Of course, also in the compression section and homogenization section, if the melting state of the plastic is disordered and uneven, it will also cause faster wear. Another important point is to adjust the speed appropriately. Because some plastics have added reinforcing materials, such as glass fibers, minerals or other fillers. These substances are much more abrasive to metallic materials than molten plastics. When injecting these plastics, if the speed is high, the shear force of the plastic will increase, and the reinforcement material will produce more broken fibers accordingly. The chopped fibers contain sharp edges.Alloy barrelThe wear force is greatly increased. It is also important that when the inorganic minerals of the alloy barrel slide at high speed on the metal surface, its scraping effect is not small. Therefore, the speed should not be adjusted too high. Rotating in the alloy barrel, the friction between the material and the two causes the working surface to gradually wear: the diameter gradually decreases, and the diameter of the inner hole of the barrel gradually increases. This matching diameter gap increases a little as the two gradually wear.

The content of the above article introduces aboutAlloy barrelof the refurbishment process and its causes of wear. If you don't know before, you can read it. Well, that's all for today's knowledge point. I hope it can bring help to relevant people.