Mold is an important tool used in tire vulcanization process, Mould on Tires the mold in the course of the inevitable use of rubber, with agents and vulcanization process used in the release agent of the integrated deposition of pollution (the main pollutants are sulfide, inorganic oxidation Material, silicone oil, carbon black, etc.), repeated use will cause some patterns of pollution dead zone.
Tire Molds There are two traditional cleaning methods:
1.1 mechanical cleaning method
The use of artificial sand or steel wire physical grinding and dry sandblasting, Mould on Tires according to the need to use a different combination of cleaning. Mechanical cleaning method is a mature technology, widely used by the tire industry. The method is simple and easy, the equipment, tools are not demanding, but there are insurmountable defects: the mold will cause mechanical damage, shorten the life of the mold; Mould on Tires sandblasting easy to plug the mold of the exhaust hole, The work of the stomata is very large. Must be removable mold, resulting in high labor intensity, long cleaning cycle.
1.2 Chemical cleaning method
Chemical cleaning methods include: organic solvent method, Mould on Tires melting method, pickling method, alkali washing method. These methods are easy to use and low cost. But the long-term use of the above method will cause mold corrosion, which directly affect the appearance and quality of the product; the same time these pharmaceutical raw materials pollute the environment, damage the health of operators, Mould on Tires must have a complete means of labor insurance and pollutant handling equipment. At present, the law is mainly used for small rubber products business.
With the continuous development of science and technology, some new technologies have been developed and applied. These cleaning techniques will bring "revolution" to the tire mill industry that is of concern. Mould on Tires But these high investment technology can be accepted by the market, need to be tested. The following article will focus on these new technologies that have been industrialized.
2.1 laser cleaning technology
Laser cleaning technology is a new type of cleaning technology that has been developing rapidly in the past 10 years. It has gradually replaced the traditional cleaning technology in many fields with its own many advantages.
Laser cleaning technology refers to the use of high-energy laser beam irradiation surface of the workpiece, so that the surface of the dirt, rust or coating instantaneous evaporation or stripping, Mould on Tires high-speed and effective cleaning surface cleaning objects or surface coating, so as to achieve a clean process. It is based on the laser and material interaction effect of a new technology, with the traditional mechanical cleaning method, chemical cleaning method and ultrasonic cleaning method (wet cleaning process), it does not need to use any damage to the ozone layer CR Li Xin organic solvents, No pollution, no noise,Mould on Tires harmless to the human body and the environment, is a "green" cleaning technology.
Laser cleaning uses a clean substrate (also known as the parent) and the surface attachment (dirt) for a certain wavelength of laser energy, with a very different absorption coefficient. Radiation to the surface of the laser energy, most of the surface attached to the absorption, Mould on Tires so that heat or vaporization evaporation, or instantaneous expansion, and by the surface of the steam flow to drive, from the surface of the object, to clean the purpose.
(Sulfur, inorganic oxide, silicone oil, carbon black, etc.) to absorb a lot of energy, is instantaneous expansion, Vaporization, away from the mold surface, Mould on Tires so as to achieve the effect of cleaning.
Laser cleaning methods are:
1) laser dry cleaning method, that is, the use of pulsed laser direct radiation decontamination;
2) laser + liquid film method, that is, first in the substrate surface deposition of a layer of liquid film, and then use laser radiation decontamination;
3) laser + inert gas method, that is, in the laser radiation at the same time, Mould on Tires with an inert gas purge the surface of the substrate. When the dirt from the surface after stripping, will immediately be blown away from the surface of the gas to avoid surface contamination