Brief introduction of spraying equipment
With application of high science and technology, industrial production technology continues to improve, the comprehensive performance requirements of mechanical parts is more and more high, improve the comprehensive application of the materials, improving surface properties of materials, the material surface has multiple functions has become the subject of close attention. Thermal spraying is one of surface engineering in the field of material surface gives new features the most effective technology, the technology is a comprehensive discipline, comprehensive functions, renewable resources, the diversity of methods, widely used in aerospace, transportation, electric power, petrochemical, metallurgy, machinery manufacturing. Light textile, biological function and other construction field, played a huge role.
Thermal spraying technology is applied by spraying material is heated to a molten or semi molten state, and has a certain speed to form a coating spray deposition method through substrate surface pretreatment, the surface of the substrate to give special function.
Thermal spraying technology by using the different heat sources can be divided into combustion method and electric heating method.
: high temperature combustion method using oxygen acetylene flame; electric heating method: between two electrodes to produce strong and lasting discharge arc, resulting in high temperature.
Regardless of the source, the principle is to use the high temperature produced by melting spraying spraying material.
A combustion method:
Wire flame spraying is by oxygen acetylene flame spraying material as heat source, thermal spraying method for wire, referred to as gas spraying. Commonly used gun models are SQX- I and SQX- II
Application of three thermal spraying, 1 metal material corrosion problems in various fields of the national economy and people's life, it brings great economic loss and damage. For a long time, people have been improved in various corrosion protection methods, application of spraying technology in the field of anticorrosion, long-term protection of steel structures (decades or even centuries), all kinds of anti-corrosion engineering preferred.
For example: the famous Shanghai Oriental Pearl, the steel structure anticorrosive thermal spraying method is used, the protection of more than 50 years of life, it is not the maintenance; gate reservoir, long-term contact with water, the corrosion problems are quite prominent, using thermal spraying method, not only the effect of the sluice gate good anticorrosion but, because of the coating has a cathodic protection function, and on-site construction, has been applied widely in the transmission tower, steel structure of the high-rise building (Shanghai Information Building), beacon highway, wind power steel structure and so on, have adopted the method of thermal spraying of anticorrosive iron corrosion and beautify the surface, in addition to iron the anti-corrosion requirements, and beautify the surface requirements. For example: a Shandong iron company, the iron lion sprayed on the surface of copper, a bronze statue of a lion on the show in front of people; the carving surface stainless steel glass steel production, a large stainless steel statue stands in the community.
, 2 boiler "Four Tubes" corrosion (for power plant boiler) boiler "Four Tubes" subject to wear and corrosion at work, and the temperature is high, due to corrosion wear, "four" maintenance costs accounted for the proportion of the total maintenance costs up to more than 50%. Using the method of thermal spraying, spraying special materials, preparation of wear resistant and corrosion resistant coating, thereby improving the service life of the pipe, reducing the cost of maintenance, repair, repair of 3 machine parts is another important field of application of thermal spraying.
For example: wear shaft between zero, by means of thermal spraying on the corresponding material, the shaft parts size recovery in various fields of machinery industry, has been widely used.
Typical example: printing roller surface wear after spraying on high carbon steel or stainless steel, after grinding, as the old new, restore function, has become a custom printing industry. It can be considered that the repair of shaft parts after wear is another important field of thermal spraying.
4, special surface preparation for some mechanical parts, the parts surface need to reach a certain mechanical and physical properties, using the thermal spraying method can often achieve a multiplier effect.
For example: paper industry dryer, spray a layer of stainless steel coating in iron based on the body, the service life can be greatly improved.
All kinds of tank chemical industry, prepared by a special coating method for coating, can prevent corrosion, improve the durability.
5, electronics manufacturing industry of electronic manufacturing industry application of thermal spraying is be too numerous to enumerate examples
Prev:
Powder spraying equipment
Next:
UV automatic spraying equipment
Tel：0576-85221688 13586101975
Fax：0576-85192268
Website：Http://www.lhxll.com
E-mail：hixll868788@163.com
Addr：High-tech Park of Linhai Tangli Economic Development Zone, Zhejiang.
