Solvent-Based Tungsten Cobalt Carbide Thermal Spraying Material

With the development of coating technology, coating on device surface has become an effective method of wear resistance and corrosion protection. In recent years, tungsten carbide thin film coating technology has been widely studied for the protection of steel and other metal materials. With the functionalization of devices and the increasingly complex shape, modern industry has put forward higher requirements for protective coatings applied on its surface.

With the rapid development of technology, some manufacturers use solvent-based tungsten cobalt carbide wear-resistant coating for thermal spraying operation. The preparation of this solvent-based tungsten cobalt carbide thermal spraying material needs three steps:

Component A: YG17 powder was weighed and dried in an oven at 120 ℃ for 1 hour. Add bisphenol A epoxy resin, 0.5g coupling agent KH560, 4G alcohol, 3G benzyl alcohol, mix in beaker, stir for 15 minutes under ultrasonic vibration. The dried tungsten-cobalt powder is placed in the above-mentioned mixing solution, which is evenly mixed under ultrasonic vibration and stirred on a magnetic stirrer for 1 hour.

Component B: 10 g benzyl alcohol and 0.6 g graphene were weighed and stirred for 15 minutes under the condition of ultrasonic vibration to make the mixture uniform, and then stirred for 0.5 hours on a magnetic stirrer. The 12.5g low molecular polyamide 650 was weighed and placed in the above benzyl alcohol solution. The mixture was stirred for 15 minutes under the condition of ultrasonic oscillation, and then stirred for 0.5 hours on the magnetic stirrer.

The surface of the workpiece is polished with abrasive cloth until it is bright. Then the oil is scrubbed with acetone, alkali is washed, and the surface of the workpiece is treated with silane. Components A and B are mixed evenly and sprayed on the surface of the workpiece. The epoxy wear-resistant coating can be obtained by drying in the drying box at 120 ℃ for 3-5 hours.

The epoxy resin wear-resistant coating modified by cobalt tungsten carbide powder combines the high wear resistance of tungsten carbide with the flexibility of epoxy resin. A high viscosity tungsten cobalt carbide wear-resistant coating with no hanging and no flow marks after spraying is formed. The wear-resistant coating greatly improves the wear resistance of the coating, and the icing on the cake is the appropriate graphene additives as nano-sliding bearings can not only reduce the friction coefficient, but also significantly improve the load-bearing and anti-wear ability of lubricants through the form of friction adsorption film.

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