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Different types of bimetallic barrels for the extrusion

May 17,2019

The bimetallic barrels are generally manufactured by the metallurgically bonding the allow lines to the inner surface of the seamless steel, pre-machined tube, bar stock or forging stock. This kind of bonding is usually achieved by heating the barrel to the specific point which is the melting point of the alloy. Then, it is spun & cooled, and centrifugally casting the alloy on the inside portion of the bimetallic barrel. Typically, the casting is 0.040 inches to 0.080 inches in depth.


Significant things about bimetallic barrels:

The lining ranges from the standard scratch resistant, corrosion resistant to the premium resistant thus all of them are providing the various degrees of wear resistances. Usually, the bimetallic barrels are heating in only the gas furnace. After removing from the fire, they are centrifugally cast in the surrounding air and providing a right opportunity for remaining stress due to the atmosphere cooling.

It can definitely cause the straightening issues thus it should be cooled under only the controlled conditions. There are a lot of manufacturing companies available currently in the market to offer different types of bimetallic barrels for the extrusion, injection molding and as well as the blow molding machinery. When considering the centrifugal casting, it makes an indivisible bond between the suitable super wear resistant alloy liner and the high strength backing steel.


Why bimetallic barrels used?


Today, a processing of the modern plastics companies is mainly using this bimetallic barrel with the fibers and fillers which requires the modern machine equipment. In this field of the plastification process, this barrel is a main consideration through the development process of the most recent wear resistant systems. Bimetallic barrel is the special alloy layer with the best wear resistance and corrosion resistance for the various industrial requirements. It will offer you several numbers of benefits such as:
* Strength resistance to fatigue
*  Optimum performance
*  Increased screw and barrel life
*  Increased process control
*  Correct wear protection system
*  Efficient energy transfer


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