With the development of automobile manufacturing technology and its continuous improvement of performance requirements, Liquid Tire Sealant as a car production is necessary for a class of important auxiliary materials, more and more widely used. Adhesive technology in the automotive manufacturing applications, not only can enhance the car structure, fastening rust, heat and vibration and internal and external decoration of the role, but also to replace some parts of the welding, riveting and other traditional processes to achieve the same or The connection between different materials, simplify the production process, optimize the product structure. In the car to the lightweight, high-speed energy-saving, extended life and improve the performance of the direction of development, Liquid Tire Sealant play an increasingly important role.
Automobile manufacturing may be divided into the following steps, namely, the manufacture of the body, the engine and chassis manufacturing, assembly, etc., Figure 1 for the car manufacturing process diagram. In this paper, the automobile body manufacturing process of welding process, painting process, assembly process, assembly process Liquid Tire Sealant application details, while the pre-development of automotive materials, special technology to do some brief introduction to the situation.
The body is one of the main components of the car. Usually, the body of the truck is the cab (including the front part of the car that is the front part), the box and the frame. Bus and car body some frame, and some no frame, the car from the role of the bottom plate.
The manufacture of the body in accordance with its structural characteristics, generally have to go through the following processes:
1, the body of the stamping
The process mainly through the press on the mold, the metal sheet in its pressure under the pressure into a certain shape of the body parts.
2, body assembly and welding
The current body is usually used in the welding method for contact welding, sub-spot welding and single-sided spot welding, contact welding is under the action of the electrode pressure, the welding parts in close contact with the use of current flows through the weld The resistance heats the welding pieces so that the welding points are fused together.
Automotive Liquid Tire Sealant requirements:
1. To fully meet the requirements of automotive materials, maintenance in the repair mileage or the expected life of the maintenance of the mission.
2. Has a good cold resistance, heat resistance, to meet the car in different climatic conditions under the test and use of the requirements of the site.
3. With excellent resistance to moisture, salt spray corrosion resistance, in the wet, multi-salt climate and highway driving without loss of function.
4. Has a good oil resistance, including a variety of lubricants, gasoline, diesel, etc., not to be dissolved by oil, extraction resistance caused by bonding failure, leakage leakage phenomenon.
Adhesive on the body, the sealant is mainly folding rubber adhesive, spot welding sealant, shock absorber, sealant sealant, anti-stone paint, finger pressure glue, interior glue,Liquid Tire Sealant windshield glass glue, butyl Sealant, anaerobic adhesive, silicone sealant, etc., respectively, the following describes the various types of adhesives, sealants in the car body application site and the use of requirements.
The spot welding sealant used in automobile production requires good construction technology, thixotropy, can guarantee the sealing performance, after the subsequent coating process before the treatment, not washed away, while small energy can pollute the ice, the point Welders can not contain silicon substances,Liquid Tire Sealant trace amounts of silicone resin may be on the quality of electrophoretic paint and paint damage. And can not affect the strength of the spot welding, welding spot welding does not decompose the toxic gas or can cause metal corrosion of the material, heating process does not flow, film curing enough flexibility and adhesion, resistance to media, anti-aging.