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  • Q What is mass finishing?

    A Most manufactured products require some surface improvement to ensure that they are in an good condition for the end-users.  Mass finishing enables large quantities of products to be finished simultaneously and automatically.
    mass finishing equipment such as vibratory polisher, barrel finisher, centrifugal tumbling machine.
  • Q Where can i buy sand for sandblasting?

    A We, Kafan, supply full kinds of abrasives and blasting media such as glass bead, ceramic sand, blask corundum, brown corundum, plastic grit, black carborundom, white corundum, stell ball, metallic grit, stainless ball, stainless steel shot, aluminum shot, etc.
  • Q What is the difference between dry sandblasting and wet sandblasting?

    A 1. Wet sandblasting use water and sand as abrasive, while dry sandblasting only use sand without water.
    2. Wet sandblasting is more environmental-friendly, does not cause pollution
    3. Wet sandblasting makes the workpiece surface more delicate.
    4. But wet sandblasting does not suitable for workpiece which are easy to get rust.
    5. The spray gun for the wet sand blasting machine is different with the dry spray gun. 

  • Q Why choose powder coating, while not wet painting?

    1. Coating material saving, the oversprayed powders can be recycled by the powder coating booth
    2. Environmental protection, not cause pollution. The plastic powders is posionless and harmless.
    3. High usage of coating material, worked with powder recycling booth system.
    4. Powder Coating surface is corrosion resistence, aging resistance, while wet painted surface can be easily rust.
    5. High efficiency and perfect coating effect. The powder coated surface usually in better appearance.
  • Q How to select a sand blasting machine?

    1. Depending on the size of the workpiece, to choose cabinet sand blasting machine, movable sand blasting machine, or automatic sandblasting machine;
    2. Depending on the shape of the product, select  the sandblasting machine with different specifications, generally, there will be standard model for product less than 1m. Customized model or open model for specially large product.
    3. Customers' requirement on the surface of the product. If it is dry blasting, there are many choices of abrasives, if wet blasting, usually choose glass sand.
    4. Some quick wearing accessories have to be familiar with, sandblasting gun and sandblasting gloves are frequently to be changed. 
  • Q Shot blasting VS blasting

    A Shot blasting is the use of high-speed rotating impeller to throw small steel balls or small iron shot high-speed impact parts surface, it can remove parts of the oxide layer. At the same time, steel balls or iron shots collide with the surface of the part at high speed, resulting in the distortion of the lattice surface of the part and increasing the hardness of the surface, which is a method of cleaning the surface of the part. Shot blasting is often used to clean the surface of the casting or strengthen the surface of the part deal with.
    General shot blasting used for regular shapes, etc., a few throw around with up and down, high efficiency, small pollution. Shipbuilding, shot blasting, sand blasting are commonly used. However, whether it is shot blasting or sand blasting, compressed air is used. Of course, not the use of high-speed rotating impeller can not be shot. In the repair, the shipbuilding industry in general, shot blasting (small shot) and more used in steel pretreatment (rust before painting); sandblasting (repair, shipbuilding industry is used ore) used in the molding of the ship or sub-section, The role is to remove the old paint and rust on the steel, re-coating. In repair, shipbuilding, shot blasting, sandblasting the main role is to increase the adhesion of steel coating paint.

    Shot blasting is driven by a motor impeller body rotation, by the role of centrifugal force, the diameter of 0.2 to 3.0 balls (cast pill \ cut pill \ stainless steel balls, etc.) thrown to the surface of the workpiece, the workpiece surface to achieve a certain rough Degree, so that the workpiece becomes beautiful, or change the workpiece tensile stress welding stress, improve the life of the workpiece. Almost used in most areas of machinery, building ship \ auto parts \ aircraft parts \ gun tank surface \ bridge \ Steel \ glass \ steel \ pipe \ etc. Sandblasting (shot) is the use of compressed air as a power to the diameter of 40 to 120 mesh sand or 0.1 to about 2.0 shots to the surface of the workpiece, so that the workpiece to achieve the same Effect.Pill the different sizes, to achieve the treatment effect is not the same.The key points: Shot peening can also play an enhanced role.Now the domestic equipment into a misunderstanding, that only the shot blasting can achieve the purpose of strengthening the United States \ Japanese companies are used to strengthen the shot peening and use! Each has its own advantages .For example, such as gears such as the workpiece, shot pill shot angle can not be changed, only to change the initial speed frequency .But it deal with the amount Large, fast, and shot peening is just in phase The effect of blasting on a good shot no effect. Sandblasting is the use of compressed air to high-speed blowing of quartz sand to clean the surface of a part of the method.
    The factory is also called blowing sand, not only to rust, but also along the degreasing, the coating is very useful. Commonly used in parts surface rust; parts surface modification (the market is small wet sandblasting machine is for this purpose, the sand is usually corundum, the medium is water); In the steel structure, the application of high strength bolts is a more advanced connection Method, because the high-strength connection is to use the friction between the bonding surface to force, so the quality of the bonding surface is very high, then the surface must be sandblasting treatment.
    Sandblasting for complex shapes, easy to use manual rust, low efficiency, the scene of the environment is not good, rust uneven. General sandblasting machine has a variety of sandblasting gun, as long as not particularly small box, can put the gun into play clean. Pressure vessels supporting products - Sealing Head blasting the workpiece surface oxide scale, the diameter of quartz sand 1.5mm ~ 3.5mm.
    There is a processing is the use of water as a carrier, driven by emery to process parts, is a kind of sandblasting.
    Blasting and sandblasting can play a cleansing and decontamination of the workpiece purpose, the purpose for the preparation of the next sequence, that is, to ensure the next procedure roughness requirements, and some in order to the surface consistency, the shot on the workpiece Strengthen the role of sandblasting is not obvious. Shot for the general small ball, sand blasting quartz sand. According to different requirements, sub-headings.
    Casting almost every day with sandblasting, shot blasting


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