Posted December 20, 2018 at 6:57 am by xzbbvfvbh

Three processing methods for ultra-thin grinding wheel

Speaking of customized metal cutting disc, I don’t know how much you know. Ultra-thin grinding wheels are of great help to the large machinery industry, such as the cutting of steel pipes. If there is no cutting piece, there is no way to cut them. Therefore, its application is also very much. Ultra-thin grinding wheel belongs to the grinding wheel and is also a kind of grinding tool. The common three processes for producing such a resin grinding wheel cutting piece are as follows.
1. Cold pressing process: the bonding agent used is a wetting agent and a powdery resin. It is usually used as a wetting agent for liquid phenolic resin, furfural, decyl alcohol, cresol, etc. The most used is a liquid phenolic resin.
2. Semi-hot pressing process: the pressing temperature is generally 50-65 ° C. At this pressing temperature, the viscosity of the liquid resin becomes small, and the powdery resin can be well integrated so that the fluidity of the entire resin system is improved. It is easier to fully penetrate the various spaces. Even if the pressure of the press is not too high, it can be molded well, and the holding time does not need to be too long. It is especially suitable for the automatic pressing production line for continuous operation.
3. Hot pressing process: The mixing requirement is different from the cold pressing process. Generally, the dry mixing method is used, or 1% of furfural less than the weight of the abrasive is used as a wetting agent to wet the abrasive, and then mixed with the powdered resin.


Now, ultra-thin grinding wheels have been used for cutting stainless steel pipes, capillaries, glass tubes, quartz tubes, automobile exhaust pipes, brake wires, tungsten wires, molybdenum wires, copper wires, and other pipe and filaments. And the slotting of the workpiece has a good effect.
What is easy to fall off?
What does it mean that the abrasive grains are easy to fall off? Some people may not know much about this. In fact, the hardness of the grinding wheel is low. The hardness of the grinding wheel means that the abrasive grains on the surface of the grinding wheel are from the bonding agent under the action of cutting force. The difficulty of falling off. If the abrasive particles are easy to fall off, the hardness of the abrasive is low; otherwise, the hardness is high.
The general principle of grinding wheel hardness selection is: grinding hard materials, soft grinding discs should be selected to keep it better “self-sharpness”, improve the service life of grinding discs, reduce grinding force and grinding heat; grinding soft When using materials, the 6 inch es cutting disc should be used, which can keep the sharp edge of the abrasive grain sharper for a long time, which is good for cutting.

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