The cavity injection wax is to inject a certain amount of liquid wax into the four cavities at the bottom of the vehicle body. After a specific process flow, the wax left inside the vehicle body cavity forms a uniform protective wax film, so that the water droplets can enter without gaps, ensuring The vehicle has good anti-corrosion properties.
After the automobile body is built, it will be tested for five to ten years or even longer. During this period, the environment may be very bad. Rusted (oxidized) is the basic chemical property of many metals. It will slowly occur at room temperature. Especially for iron and steel materials commonly used in automobiles, once iron is rusted, the iron oxides produced will absorb water molecules in the air and cause serious damage. Corrosion. From the material point of view, as long as steel is used, there is no way to avoid rust. Galvanized steel also cannot completely prevent rust.
Anti-rust treatment of automobiles is mainly concentrated on the body. The body in the manufacturing process is called "white body." In the process of manufacture, the body-in-white has been treated with “cathode electrophoretic coating†to prevent rust, but this does not prevent the occurrence of rust in the cavity.
There are many cavities in the car body. These cavities are very important to increase the body strength and reduce the weight of the car body. In the ordinary anti-rust coating process, these cavities cannot be processed. To prevent this galvanic corrosion from occurring inside the cavity, the technician invented the cavity injection wax technique.
When making parts with cavities, the wax injection holes are generally already reserved in advance. Note that the wax hole is generally small. In such places as the stringers, there are no special openings at all, but injections are made at the top of the stringers. After welding, the body-in-white undergoes basic rust-prevention treatment and enters the process of wax injection. The beginning of the wax injection process is performed with hot air. Generally, the temperature at this time is about 85 degrees, which is higher than the hot air temperature during the car wash. After heating the entire vehicle body, heat the special internal cavity rust-proof wax to 115 degrees, and use a special pump to inject the already dissolved wax into the previously reserved wax injection hole, and keep the excess wax liquid flowing out for a certain period of time. The final thickness of the wax film is about a few hundred microns. Then enter the cooling zone and blow it to room temperature with cold air. Finally, all the wax injection holes were sealed.
Volkswagen is the first domestic automaker to introduce wax injection technology. 120 kg of wax was injected into the body cavity, and after a certain period of time, a kilogram of wax remaining in the car formed a uniform protective film on the surface of the cavity.
At present, domestic brands, Chery also introduced the cavity injection wax technology, the new model A3 that uses this technology to manufacture the body, in the domestic brands won a lot of word of mouth.
The air compressor is a mechanical device that compresses the volume of the gas and increases the pressure of the gas and delivers the gas. It can reduce the volume of the gas, increase the pressure, and have a certain kinetic energy, which can be used as mechanical power or other purposes.
Since the compressed high-temperature gas and high-temperature oil play the role of transmission power and power source in the air compressor, for the safe and benign operation of the air compressor, high-efficiency heat dissipation of the high-temperature gas and oil is required plate-fin heat exchange. It is widely used in air compressors with the advantages of high pressure resistance and large heat dissipation power per unit volume. We offer standard coolers or special custom cooler solutions for current different cubic air compressors, ensuring that the air compressors work long hours.
2. Control instrument: machining center, machine tool, printing machine, power plant auxiliary equipment control, train brake, rail change and change device, vehicle door and window opening and closing, control valve, instrument power, etc.
3. Drive equipment: air guns, nail guns, robots, pneumatic drills, pneumatic picks, etc.
4. Surface spraying: metal surface sandblasting, surface painting, etc.
5. Dust transportation: coal powder transportation in power plant smelting plant, dust transportation in cement plant, etc.
6. Pressurization: metal casting, forging, etc.
7. Chemical reactions: Chemical reactions in chemical plants, oxygen production, nitrogen production, etc.
8. Purging: power plant pipeline cleaning, smelting plant, mechanical processing plant iron filings, dust cleaning, workbench cleaning and other ventilation, tunnels, mine ventilation.
9. Aircraft manufacturing: spray washing machine, demoulding, driving assembly tools, drilling rigs, steam hammers, lifting hoists, combination knives, reamer, rivet guns, screwdrivers, forging hammers, metal forming presses, sand blasting, painting.
10. Spraying machine: spray washing machine, driving assembly tool, lifting hoist, pneumatic control, forging workshop, sheet metal workshop.
11. Beverage factory: bottle washing machine, canning machine, internal spraying of wine barrels, gas for food industry.
12. Cement manufacturing: storage ventilation, cement slurry mixing, cement bag cleaning and sealing, raw material mixing, dump truck, cleaning equipment, clinker cooling, conveying cement and coal, cement kiln cleaning, vehicle loading and unloading, lifting and lifting devices, pneumatic control.
13. Thermal power plants: blowing air to clean pipes, blowing off soot, clear boiler and condenser pipes, jet cleaning, conveying coal powder, removing muddy water, and pneumatic control.
14. Hydropower plants: engine control, ship lock maintenance, drive controller, drive lubrication pump, drive ship lock, start control, cleaning garbage net.
15. Food industry (general application): stirring liquid, fermentation tank gas (oxygen), nozzle cleaning equipment, clear container with nozzle, conveying raw materials, food dehydration, filtration.
16. Forging workshop: blowing oxide scale, furnace door air curtain, lifting hoist and lift, driving bending and straightening machine, driving clutch brake and clamping device, driving forging hammer and driving oil burner.
17. Foundry workshop: hot metal positioning, cleaning equipment, conveying sand, driving pneumatic tools, sanding machine, grinder, lifting hoist and lift, pneumatic pick, steel brush, sandblasting, sand screening, spray core.
In summary, the industries used for compressed air include machinery, automotive, electronics, electric power, metallurgy, mining, construction, building materials, petroleum, chemical, petrochemical, textile, environmental protection, military and other industrial and civil production and life. each field.
Compressor Heat Exchanger,Fireplace Heat Exchanger,Heat Exchanger For Air Compressor,Air Compressor Heat Exchanger
Xinxiang Zhenhua Radiator Co., Ltd. , https://www.thermictransfer.nl