Waste Tungsten Carbide Roll Ring Process

The processing principle of waste tungsten carbide roll ring is that making the inside filling up through a core shaft. And finally reach the clamping effect. Generally speaking, it can make thin wall sleeve expansion of 0.15mm.

Wast tungsten carbide roll ring should choose cutting fluid reasonably, that can promote friction in grinding process, decrease grinding heat. the most important function of cutting fluid is cooling, lubrication, cleaning, rust. The selection of grinding fluid has a big influence on grinding hard alloy scrap tungsten carbide roll ring. Good grinding fluid can promote work efficient and decrease roughness value of work piece surface.

The wheel sand of wast tungsten carbide roll ring is made of abrasive and binder. It is processed through several steps, such as limit, boring and sintering. It is also composed by abrasives, binders and space. Abrasive is equivalent to the cutting blade which owns cutting action. Space is favor of removing chip and heat dissipation. In general, people like to choose diamond grinding wheel which regard resin and bronze as binder. This will play a good role in batch processing of waste tungsten carbide roll ring.

Reduction Size Of Tungsten Carbide Powder Oxides

There are many factors that influence reduction size of tungsten carbide powder oxides. Such as tungsten carbide powder properties, impurities, and temperature. Restoration activity of tungsten oxide has obvious effect on the particle size of tungsten powder. Material with bigger restoration activity is more easier to get the tungsten powder with fine grained.

The influence of impurity elements in tungsten particles change, can be divided into three categories. The fist category is that impurity elements which represent by alkali metal can play the carrier effect of oxygen. It can promote chemical reaction and enhanced tungsten powder particles grow. The second one is that calcium, magnesium and silicon have little influence on tungsten particles growing. Besides materials which represent by aluminum can form a thin oxide layer with high stability. Elevated temperature can accelerate the reduction reactions. And it also speed up the creation of water vapor, particle growth and aggregation.

Partial pressure of water vapor is a main factor to powder particle size and shape change. Water vapor is a basic condition to chemical vapor removal reaction, it includes water vapor in hydrogen and reduction reactions. It is not a stable value in the process of recovery.