Sand blasting is the use of compressed air, steam, water or vacuum to direct the high-speed jet formed by the passage of quartz sand, corundum, etc. through the nozzle to the surface of the glass product, so that the surface of the organization is continuously damaged by the impact of sand particles. Become opaque matte surface. The sandblasting decorative pattern is obtained by laminating the surface of the glass product with a flexible hollow plate made of metal foil or other material. Different stencils have different pattern designs. Glassware sandblast decoration mainly uses a small vacuum blasting machine or a small pressure sandblasting machine. The difference between these two types of machines is that the former uses vacuum to produce high-velocity jets, while the latter uses compressed air to produce jets.
After the sand has been separated, screened, and cleaned up, the company will reuse it. Each pattern of sandblasting time is about 1-2s. At the end, the pedal is released, the valve is closed, the vacuum is lowered, the product is manually turned, and sandblasting is continued at another site. The product is designed with several patterns that can be sandblasted several times and the bottom pattern can be replaced at any time. Through the observation window on both sides of the workroom, the working status of the jet stream in the working chamber can be clearly seen, and can be adjusted at any time according to the situation. Finished products are automatically packaged by the assembly line controller. The hollow floor can be made of paper, rubber, metal, etc. The cardboard is suitable for decoration of exquisite and unique patterns; the rubber bottom plate is suitable for decorating small-size products, but it is suitable for decorating large-scale products, flat glass and the like. Metal bottom plate (commonly used for lead skin and zinc skin) is suitable for all kinds of products. Due to its good softness, easy carving patterns, good elasticity of wrapped products, and long service life, it is widely used. The thickness of the metal plate is generally o.5-2mm. In addition, it can also be coated with glycerin, chalk-based protective coating on glass products. After drying, the pattern is engraved on the coating, which becomes the coating floor.
The product should be washed with hot water before coating and then wiped dry. Small products are coated with impregnation method, large products are coated with shower coating, and dried after a day and night. Patterns that are commonly used for copying patterns are hard core pencils, ballpoint pens or special wood pin pins. Practice has proved that the use of adhesive protective coating for sandblasting, product decoration quality is higher. The effect of sandblast decoration depends on the air velocity, air pressure, grit size and hardness, and the nature of the glass product itself. Under normal circumstances, the air velocity is high and the production efficiency is high. The fine sand particles make the products form a fine structure and the resulting pattern is delicate and delicate. The coarse sand erodes the surface to a large extent and the resulting pattern is rough. Lead glass is low in hardness and easy to spray; high silica glass is hard and difficult to spray.
In addition, the depth of spray sculpting is also a non-negligible factor in the artistic effect of sandblasting vessels. Different depths will enable people to produce different levels of three-dimensional and multi-color sensation. A caliber of 1.5, 2, 3, and 3.5 has been developed for this purpose. Mm colored spray gun, when used in the studio, the spray area and distance can be automatically adjusted, the product can be moved in three-dimensional direction, so that the best jet effect, this product will make people have different levels of three-dimensional color . The air pressure at this time is generally o.3 to o.4 MPa. In recent years, a decorative method that has emerged in China is to coat decorative glass surfaces on a matte surface (blast-blasted, chemical-sandwiched) glassware, and then print a decorative pattern with transparent glass glaze, and then bake at a temperature of 550-600°C. When burned, the glaze is melted and adhered to the glass product. The effect is just like the transparent pattern left by the glass wool etching process. The edge of the pattern is very clear. Or use a glaze with a similar opacity to the frosted glass to perform screen printing on a transparent glass product, and then send it to a roasting kiln to bake the bee at 580-600°C to obtain a smooth and uniform glaze with its emulsion. The degree is similar to that of rough glass.
The former used transparent glaze composition range: SiO: 10% to 30%, Pb040% to 60%, B20; 10% to 20%, A120~o to 10%. The advantages of this method are its clear design, simple process, low pollution and low cost, and it is suitable for large-scale continuous production. The formula of the translucent glaze used in the latter is: quartz powder 21.44%, Hongdan 42.87%, boric acid 14.45%, zinc white 1.40%, sodium carbonate 3.26%, sodium nitrate 4.66%, aluminum hydroxide o.77%, fluorite powder 1.449 ", Titanium Dioxide 3.73%, salt o.47%, magnesium carbonate 2.80%, zirconia 2.80%. The advantage of this method is that it has a smooth surface, is not easy to stain, and is comfortable to handle. It is particularly suitable for the imitating wool surface decoration of daily glassware.
After the sand has been separated, screened, and cleaned up, the company will reuse it. Each pattern of sandblasting time is about 1-2s. At the end, the pedal is released, the valve is closed, the vacuum is lowered, the product is manually turned, and sandblasting is continued at another site. The product is designed with several patterns that can be sandblasted several times and the bottom pattern can be replaced at any time. Through the observation window on both sides of the workroom, the working status of the jet stream in the working chamber can be clearly seen, and can be adjusted at any time according to the situation. Finished products are automatically packaged by the assembly line controller. The hollow floor can be made of paper, rubber, metal, etc. The cardboard is suitable for decoration of exquisite and unique patterns; the rubber bottom plate is suitable for decorating small-size products, but it is suitable for decorating large-scale products, flat glass and the like. Metal bottom plate (commonly used for lead skin and zinc skin) is suitable for all kinds of products. Due to its good softness, easy carving patterns, good elasticity of wrapped products, and long service life, it is widely used. The thickness of the metal plate is generally o.5-2mm. In addition, it can also be coated with glycerin, chalk-based protective coating on glass products. After drying, the pattern is engraved on the coating, which becomes the coating floor.
The product should be washed with hot water before coating and then wiped dry. Small products are coated with impregnation method, large products are coated with shower coating, and dried after a day and night. Patterns that are commonly used for copying patterns are hard core pencils, ballpoint pens or special wood pin pins. Practice has proved that the use of adhesive protective coating for sandblasting, product decoration quality is higher. The effect of sandblast decoration depends on the air velocity, air pressure, grit size and hardness, and the nature of the glass product itself. Under normal circumstances, the air velocity is high and the production efficiency is high. The fine sand particles make the products form a fine structure and the resulting pattern is delicate and delicate. The coarse sand erodes the surface to a large extent and the resulting pattern is rough. Lead glass is low in hardness and easy to spray; high silica glass is hard and difficult to spray.
In addition, the depth of spray sculpting is also a non-negligible factor in the artistic effect of sandblasting vessels. Different depths will enable people to produce different levels of three-dimensional and multi-color sensation. A caliber of 1.5, 2, 3, and 3.5 has been developed for this purpose. Mm colored spray gun, when used in the studio, the spray area and distance can be automatically adjusted, the product can be moved in three-dimensional direction, so that the best jet effect, this product will make people have different levels of three-dimensional color . The air pressure at this time is generally o.3 to o.4 MPa. In recent years, a decorative method that has emerged in China is to coat decorative glass surfaces on a matte surface (blast-blasted, chemical-sandwiched) glassware, and then print a decorative pattern with transparent glass glaze, and then bake at a temperature of 550-600°C. When burned, the glaze is melted and adhered to the glass product. The effect is just like the transparent pattern left by the glass wool etching process. The edge of the pattern is very clear. Or use a glaze with a similar opacity to the frosted glass to perform screen printing on a transparent glass product, and then send it to a roasting kiln to bake the bee at 580-600°C to obtain a smooth and uniform glaze with its emulsion. The degree is similar to that of rough glass.
The former used transparent glaze composition range: SiO: 10% to 30%, Pb040% to 60%, B20; 10% to 20%, A120~o to 10%. The advantages of this method are its clear design, simple process, low pollution and low cost, and it is suitable for large-scale continuous production. The formula of the translucent glaze used in the latter is: quartz powder 21.44%, Hongdan 42.87%, boric acid 14.45%, zinc white 1.40%, sodium carbonate 3.26%, sodium nitrate 4.66%, aluminum hydroxide o.77%, fluorite powder 1.449 ", Titanium Dioxide 3.73%, salt o.47%, magnesium carbonate 2.80%, zirconia 2.80%. The advantage of this method is that it has a smooth surface, is not easy to stain, and is comfortable to handle. It is particularly suitable for the imitating wool surface decoration of daily glassware.
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