Application of bond mixer in metal powder production

The use of bonding mixer in production of me tallic powder coatings 1 foreword with the continuous expansion of the application field of powder coatings, the varieties of powder coatings are also expanding rapidly Some special properties, special colors and decors, containing metal powder pigments, metal appearance coatings are gradually replacing liquid paints This kind of powder coating is called metal flash powder coating (metal powder for short) Due to the particularity of powder coating, the difference of physical and chemical properties between metal powder pigment and resin, and the technological characteristics of spraying construction (electrostatic adsorption, high temperature baking), the metal powder pigment particles are easy to form uneven agglomerates and lose metallic luster due to oxidation deterioration In order to ensure the excellent metal appearance spraying effect of metal powder coating, it is necessary to integrate the resin and metal powder pigment to make the resin cover the metal powder pigment During the spraying process, the resin and metal pigment can be evenly distributed on the workpiece surface, and the perfect coating surface with metal luster can be formed by resin protection during baking Bond mixer is the equipment to complete the processing process of the metal powder coating 2 The processing method and process of metal powder coating require that the metal powder coating is usually processed by mixing a certain amount of metal powder pigment into the extruded, milled and screened finished powder, and then mixing it with a bonding mixer Therefore, the technological requirements for metal powder coating processing are: the mixture of metal powder pigment and finished powder must be uniform, and the finished powder should tightly wrap and stick the metal powder pigment 3 The processing technology of metal powder coating is to pour the finished powder into the material tank, start the mixer and heating device to raise the temperature of the material; after reaching the required temperature, add the metal powder pigment and keep the constant temperature for bonding and mixing; after mixing and bonding for a certain time, keep the stirring paddle rotating and cooling In order to prevent the explosion of metal powder pigment, nitrogen shall be introduced into the cylinder 4 Brief introduction to the structure of bonding mixer The bonding mixer is composed of main and auxiliary agitators, material tanks, racks, temperature control system and nitrogen injection system The application of domestic bonding mixer in the production of metal powder coating domestic bonding mixer has the characteristics of simple structure, convenient operation, low price and stable performance Qitong company began to produce the model (constant temperature mixer hw-100) in 2000 In recent years, it has been used well, and the large capacity model is in the process of design and manufacture.