such as scrapers, wire brushes or grinding wheels. By hand can remove the rust and oxide skin on the surface of the workpiece, but manual processing labor intensity, low productivity, poor quality, cleaning is not thorough.
Chemical treatment
Mainly the use of acidic or alkaline solution with the surface of the workpiece oxides and oil chemical reaction, so that it dissolves in the acidic or alkaline solution to achieve the removal of surface rust oxide and oil, and then the use of nylon made of brush roll or 304 # stainless steel wire (acid and alkali solution made of steel wire brush roller can be swept to clean up to achieve the purpose. Chemical treatment is adapted to the thin plate parts cleanup, but the disadvantage is: if the time control is not appropriate, even if the addition of corrosion inhibitors, but also can make the steel to produce over-etching phenomenon, for the more complex structural parts and parts with holes, acid solution pickling by acid, immersed in the crevices or holes in the residual acid is difficult to remove completely, if not handled correctly, it will be a workpiece after the corrosion of the hidden trouble, and the chemical is volatile, costly, chemical emissions after treatment Difficulty, if not handled properly, will cause serious pollution to the environment. With the improvement of people's awareness of environmental protection, this treatment method is being replaced by mechanical treatment method.
Nylon brush roll
Mechanical treatment
Mainly including the steel wire brush roll polishing method, shot blasting method and shot blasting method. Polishing method is that the brush roll is driven by the motor, the brush roll in the direction opposite to the movement of the rolled parts in the upper and lower surfaces of the strip high-speed rotating brush to remove the iron oxide. Brush off the iron oxide skin using a closed loop cooling water rinsing system flushed off. Shot blasting cleaning is to use centrifugal force to accelerate the projectile, ejected to the workpiece for descaling and cleaning method. However, the flexibility of shot blasting is poor, limited by the site, some blindness when cleaning the workpiece, and it is easy to produce dead ends on the inner surface of the workpiece that can not be cleaned. Complex structure of the equipment, wearing parts, especially the blade and other parts of the wear and tear, maintenance labor hours, high cost, a large investment.
Surface treatment with shot blasting, striking force, cleaning effect is obvious. However, shot blasting on thin plate workpiece processing, easy to make the workpiece deformation, and steel shot blasting to the surface of the workpiece (regardless of shot blasting or shot blasting) so that the metal substrate deformation, due to tetraferric oxide and ferric oxide has no plasticity, crushing and stripping, and the oil film and its material with the deformation, so the workpiece with oil, shot blasting, shot blasting can not be completely remove the oil. In the existing workpiece surface treatment methods, the best cleaning effect is still sandblasting cleaning. Sand blasting is suitable for workpiece surface requirements of higher cleaning. But China's current general-purpose sand blasting equipment mostly consists of hinged dragon, scraper, head type elevator and other primitive and bulky sand transfer machinery. Users need to build a deep pit and do waterproof layer to install the machinery, high construction costs, maintenance workload and maintenance costs are very large, sandblasting process produces a large amount of silica dust can not be removed, seriously affecting the health of workers and pollute the environment.
Spraying equipment
Foreign countries use more sand suction machine as the amount of sand conveying machinery, sand suction machine is actually an oversized vacuum cleaner, with a thicker conveying pipe will be connected to the hopper and the sand suction machine, sand will be sucked into the storage tank, sand suction machine is characterized by the difficulty of the construction and the process of the bucket lifting machine than a simple, and convenient and easy to control, less need for maintenance, but the power consumption is large, sand suction machine at present domestic There are also several manufacturers specializing in the production of sand suction machine, but the technology is relatively immature, so the vast majority of surface treatment enterprises are still mainly using bucket elevator.
The need to do the process of shot blasting factory in the choice of sand transfer equipment and dust removal equipment must take full account of the actual situation of production, try to choose the power relative to the production needs of a larger device, due to the shot blasting to do the industry's equipment is generally more rapid wear and tear, long-term use of such and such problems will be a lot of impact on the production, the choice of a larger power of the equipment will greatly reduce the maintenance of future waste of time and Costs. Dust removal equipment power is not only damage to the health of workers, but also seriously affect the visibility of the sandblasting room, the dust is not discharged also affect the quality of the sand itself, affecting the surface roughness of the workpiece.
Manual sand blasting room should be designed according to the actual situation relative to accommodate the workpiece more spacious space, can not be too constricted or affect the workers manual work, while the lighting conditions must be good, for the drier areas can be sand blasting in the outdoors.
Plasma treatment
Plasma, also known as plasma, is a positively charged positive particles, negative particles (including positive ions, negative ions, electrons, free radicals and various types of active groups, etc.) composed of a collection of which the positive and negative charges are equal to the amount of electricity, so it is known as the plasma is in addition to the solid state, the liquid, the gas outside of the existence of the substance of the fourth state - plasma state. Plasma state.
Plasma surface processor by the plasma generator, gas piping and plasma nozzle and other components, plasma generator produces high-pressure high-frequency energy in the nozzle tube is activated and controlled glow discharge in the generation of low-temperature plasma, with the help of compressed air will be plasma sprayed to the surface of the workpiece, when the plasma and the object being processed when the surface encountered, resulting in the object of change and chemical reaction. The surface is cleaned, removing hydrocarbon-based dirt, such as grease, auxiliary additives, etc., or produced rough by etching, or forming a dense cross-linked layer, or introducing oxygen-containing polar groups (hydroxyl, carboxyl), which have the effect of facilitating the adhesion of various types of coated materials, and are optimized for bonding and paint application. With the same effect, the application of plasma to the surface results in a very thin, high-tensile coating surface that facilitates bonding, coating and printing. No other machines, chemical treatments, or other strongly acting ingredients are required to increase adhesion.
Plasma surface treatment in the printing and packaging industry
1. Solve the problem of laminating film open glue
2. Solve the problem of UV, varnish open glue
3. Beverage bottles, jam bottles, adhesive seals to meet the firmness and reliability
Plasma surface treatment in the field of automobile and shipbuilding
1. Automobile sealing strip adhesive surface The surface treatment of automobile sealing strip bonding, bonding more closely, sound insulation, dustproof
2. automobile lamps bonding process, bonding firm, dustproof, moistureproof
3. automobile interior surface spraying, printing pre-treatment, do not fade, do not lose paint
4. automobile brake pads, oil seals, bumpers before the coating treatment, seamless bonding
5. shipbuilding materials before the adhesion of processing. Perfect bonding
Plasma surface treatment in ceramic surface
1. ceramic coating pretreatment, without primer, coating firm
2. ceramic glaze pretreatment, adhesion enhancement
Plasma surface treatment in cable industry
1. special cable printing, coding and printing effect
2. fiber optic cable printing, fastness comparable to laser marking
2. Laser marking is comparable
3. Cross-fiber printing, printing clear and wear-resistant
Plasma in the application of medical and biological materials
1. Surface treatment of human implantation materials to meet the compatibility of
2. Hydrophilic treatment of medical consumables
3. Sterilization treatment of medical equipment
4. Bonding after the surface treatment of medical catheters, bonding more firmly
5. Plasma in textile printing and dyeing industry
1. Cellulose fiber treatment to improve dyeing performance and dyeing rate
2. Protein fiber treatment to increase hydrophilicity and adsorption
3. Synthetic fiber treatment to increase hygroscopicity and remove static electricity
Plasma in plastic surface treatment
1. Pipe surface treatment, increase the adhesion of printing
2. Toys surface treatment, favorable bonding, printing, etc.
3. Drink bottle cap, cosmetic surface printing, adhesion
4. Daily necessities and household appliances plasma treatment
5. Shoes adhesive pre-treatment to ensure that the solid does not open the glue
Plasma surface treatment of digital products
1. mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones, mobile phones and mobile phones p>
1. cell phone, notebook shell bonding, shell does not paint, the text does not fade
2. cell phone keys and notebook keyboard bonding, keyboard text does not paint
3. cell phone shell and notebook shell coating, does not paint
4. LCD flexible film circuit lamination, lamination is more solid
5. components binding pre-treatment to ensure that the bonding Firm
Rubber and plastic industry surface treatment
1. Able to print, bonding, coating and other operations
Glass products before bonding plasma treatment
1. Windshield bonding pre-treatment, bonding more moisture-proof, sound insulation
2. Laboratory bacterial Petri dishes hydrophilic, adhesion treatment, bacterial production uniformity
3. Display bonding pre-treatment
Plasma metal surface modification
1. Improvement of metal surface adhesion
2. Improvement of metal surface corrosion resistance
3. Enhancement of metal hardness and wear characteristics
Plasma treatment for daily necessities and household appliances
1. Pre-coating surface treatment for stronger coatings
2. Surface treatment before printing, printing does not fall off
3. Surface treatment before bonding, stable bonding
4. Surface treatment of high-grade furniture, no need to sand, directly paint, no paint