With the development of science and technology and the improvement of production technology, the cutting blades that used to rely mainly on imports have been greatly developed, especially in the metal cutting blades and other chemical cutting sheet industries. With the maturity of technology and the improvement of technology, the production of cutting blades It is no longer a problem. Henan green cutting sheet manufacturer Aurora Abrasives Co., Ltd. will lead us to know the cold pressing process in the production process of
green cutting disc.
The production process of the phenolic resin bond grinding wheel is mainly a cold pressing process. How about this?
Cold pressing process: The bonding agent used in the cold pressing process is a wetting agent and a powdery resin, and a liquid phenolic resin, furfural, decyl alcohol, cresol or the like which is usually used as a wetting agent, and a liquid phenol resin is used. The factors determining the ratio of liquid resin to powdered resin (usually called liquid to powder ratio) are: abrasive particle size distribution, filler type, filler amount, viscosity of liquid resin, and properties of powdered resin. If the viscosity of the liquid resin is larger, more liquid resin is required to completely cover the surface of the abrasive; the smaller the particle size of the abrasive and the filler, the larger the specific surface area and the more the liquid is used; the molecular weight of the powdered resin is higher. The lower the high and free phenol, the worse the adhesion to the liquid resin and the greater the amount of liquid required. In all of the above cases, it is necessary to increase the liquid to powder ratio. Generally, a liquid resin is used as a wetting agent, and the ratio of liquid to powder is 1:2 – 1:4, and a mixture of furfural or decyl alcohol and eucalyptus oil is used as a wetting agent, and the ratio of liquid to liquid is 1:6 – 1:8. The
green cutting discmixer is process proven to achieve the desired mixing results without damaging the abrasive. The mixing time after adding the fine powder is generally 2-4 minutes. If the mixing is too short, the mixing is not uniform, the resin film is too long to fall off, and the temperature of the material is raised, and the resin is pre-cured.
From the analysis of Aurora Abrasives Co., Ltd., the cold pressing process in the production process of the cutting piece is a common production process. Whether it is a metal cutting piece or a resin cutting piece, this process is very critical. Therefore, the mass production In the process of production, manufacturers must grasp the various processes of cold pressing in the production process to prevent large quality problems due to a small mistake.