The use of artificial sand or steel wire physical grinding and dry sandblasting, according to the need to use a different combination of cleaning.
Mechanical cleaning method is a mature technology, Mould on Tires widely used by the tire industry. The method has the advantages of simple operation, the equipment and tool requirements are not high, but there are also insurmountable defects: will cause mechanical damage to the mold, shorten the life of the mold; sandblasting easy to plug the mold exhaust hole, Stomatal work is very large; must be removable mold, resulting in high labor intensity, long cleaning cycle.
Chemical cleaning method mainly includes: organic solvent method, melting method, pickling method, alkali washing method.
These methods are easy to use, low cost, Mould on Tires but 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, must have a complete means of labor insurance and pollutants Processing equipment. At present, the law is mainly used for small rubber products business.
Laser cleaning technology, is nearly 10 years of rapid development of a new cleaning technology, with its own many advantages in many areas gradually replaced the traditional cleaning process.
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, high-speed removal of the surface of the object to clean the surface or surface coating, Mould on Tires so as to achieve a clean process.
It is a new technology based on the interaction between laser and material. Unlike conventional mechanical cleaning, chemical cleaning and ultrasonic cleaning (wet cleaning), it does not require any organic solvents that destroy the ozone layer, No noise, harmless to the human body and the environment, is a green cleaning technology.
Laser cleaning has a very different absorption coefficient for a certain wavelength of laser energy using the cleaning substrate (also known as the parent) and the surface attachments (dirt) for the mechanism of mold cleaning. Radiation to the surface of the laser energy, most of the surface attached to the absorption, so that the heat or vaporization evaporation, or instantaneous expansion, and by the surface of the steam flow to drive, from the surface of the object to achieve the purpose of cleaning.
Specifically for tire mold cleaning, the mold absorbs a specific wavelength of the laser, the energy is very small, will not cause damage, mold surface dirt (sulfide, Mould on Tires inorganic oxide, silicone oil, carbon black, etc.) absorb a lot of energy, Vaporization, away from the mold surface, 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, with an inert gas purge substrate surface. When the dirt from the surface after stripping, will be immediately blown away from the surface of the gas to avoid surface contamination and oxidation;
(4) the use of laser to loose dirt, and then non-corrosive chemical cleaning.
At present, the commonly used is the first three methods, the first four methods are only seen in the cleaning of stone artifacts.