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Shot blasting derusting machine for steel bridge deck

Author: admin Source: This station Time: 2015-12-30 10:50

After being placed for a period of time, the surface of the steel plate will slowly oxidize and rust, and the corrosion in coastal cities is more serious. Therefore, it is necessary to remove rust after secondary processing or use. However, for large-scale steel plate, the efficiency of surface rust removal depends on manual work. The use of large-scale steel plate rust removal equipment can improve the efficiency, but the equipment occupies a large area and the cost is high. At the same time, the steel plate needs to be placed on the equipment to clean and increase Transshipment costs. Combined with the above factors, is there a kind of mobile derusting equipment that can directly act on the surface of steel plate?

Huashengtai road shot blasting machine and mobile shot blasting machine have been widely used in many fields, such as oil tank, ship deck, apron, highway, etc. through the high-speed shot acting on the steel plate surface, the surface rust and other sundries are completely removed. The shot is automatically recovered by the shot collector, and then recycled into the shot blasting machine for recycling and loading at the same time When the dust remover is used, the oxide scale and dust after cleaning are recovered to the dust collector and fall into the settling box, so there is no air pollution problem in the whole process.

Horizontal mobile shot blasting machine is a kind of shot blasting cleaning machine newly developed according to the needs of customers. Once it comes into the market, it is praised for its unique use value and obvious cleaning effect. In terms of the working principle of the equipment, the shot material (steel shot or sand grain) is shot onto the concrete pavement with high speed and proper angle by mechanical method, and the steel shot is pushed to the ground quickly by the high-performance shot blasting device, and the soft part of the surface is removed, and the irregular "orange peel" structure is formed to achieve the purpose of cleaning. The depth of shot blasting is between 0.1 mm and 3 mm. Users can control the shot flow by selecting and controlling the particle size and shape of the shot, adjusting and setting the walking speed of the machine according to their own needs, In order to achieve different surface treatment effects, such as: S330 steel shot, flow rate of 10a, C50 concrete surface, roughness 90; asphalt surface, flooding layer can be removed, roughness 80; steel plate, SA3 cleanliness standard. In the process of shot blasting, the shot and dust are inhaled by the vacuum cleaner and enter the special filtering system. At the same time, the dust and steel shot are separated automatically, and the dust is separated into the output box, and the steel shot is recycled in the shot blasting machine. This process seems simple, but it really creates a dust-free and pollution-free construction environment. While improving work efficiency, environmental protection is put on the agenda. In this environment-friendly era, more people with insight can realize its advantages. As a favorite of the times, this horizontal mobile shot blasting machine will play a role and play a role far beyond our imagination.
The key parts of the horizontal mobile shot blasting machine are all imported from abroad. The rolled Mn13 guard plate is used in the cleaning room, which has excellent wear resistance to the strong impact wear and high stress wear of the projectile. The greater the external impact, the higher the wear resistance of its surface layer, Under the action of large impact or contact stress, the surface hardness of high manganese steel plate increases rapidly from hb200 to hb500, resulting in a high wear-resistant surface layer, while the austenite in the steel plate still maintains good impact toughness. And with the gradual wear of the surface hardening layer, the new work hardening layer will continue to form and will not be broken in use. The service life can reach more than 8 years. The blade is made of material imported from Germany. The improved heat treatment process makes the carbides aligned vertically to the grinding surface, reduces the amount of retained austenite, eliminates shrinkage defects, improves the density, and has a service life of more than 1000 hours.
Purpose:
One of the most widely used fields of asphalt pavement maintenance shot blasting equipment is to improve the roughness and friction coefficient of asphalt pavement, so as to improve the adhesion of road surface and ensure the safety of driving. At the same time, the attachment of asphalt pavement (such as fuel, engine oil, etc.) also has no escape. The main applications are as follows:
(1) During the construction of asphalt concrete overlay, the use of shot blasting technology for road surface pretreatment can ensure the cleanness of the pavement, increase the surface roughness, strengthen the bonding between the overlay and the original pavement, and greatly increase the durability of the structure; when slurry seal coat and resin material overlay are used, shot blasting treatment can greatly improve the resin cover The bonding strength between the surface and the original base improves the quality of slurry seal coat and prolongs the service life of pavement.
(2) Shot blasting technology can be directly used on asphalt pavement, such as roughening the surface of turning section to improve the skid resistance.
(3) In this process, the oil spilling on the asphalt surface can be directly removed, so the skid resistance of the pavement can be improved;
(4) The mark line can be completely removed under the action of shot blasting process. In our country, the traffic accidents caused by road slip are increasing, but it has not been paid attention to widely. Every year, the traffic accidents caused by road skid are becoming more and more serious. The shot blasting equipment can flexibly deal with small areas of road sections, restore the anti sliding performance of pavement, and provide reliable guarantee for vehicle safety. The asphalt surface treated by shot blasting not only cleans all kinds of surface attachments, but also increases the roughness of asphalt surface and improves the performance of asphalt pavement. Moreover, the equipment construction is simple, convenient and flexible, and the road surface cleaning work can be carried out reasonably and orderly.
2. Anti corrosion coating of steel bridge surface
In China, the application of shot blasting technology in anti-corrosion coating of steel bridge can not be denied. Most of the bridges built and built will choose to use shot blasting process for surface cleaning and roughness treatment before anti-corrosion primer or other spraying. Qingdao Bay Bridge uses our company's shot blasting machine. The shot blasting process can meet the cleanliness requirements of sa2.5/sa3 steel plate, and the roughness can be controlled, Meet the requirements of users, the whole process is dust-free operation, easy to move. It is environmentally friendly and convenient.
3. Tunnel maintenance in our country, due to the consideration of waterproof, material fire resistance and oil resistance, cement concrete is generally used in tunnel pavement. But it also puts forward higher requirements for the anti sliding performance of long tunnel pavement. For the above two problems which are still difficult to solve in China, shot blasting technology is a simple construction, small equipment investment, significant effect and environmental protection treatment method.
In recent years, more and more projects using shot blasting technology to treat bridge deck and tunnel are recommended by users. In the waterproof pavement of concrete bridge deck, shot blasting technology has been the requirements of process specifications in European and American countries, and is gradually accepted in China. Shot blasting technology is used to maintain concrete pavement. And huashengtai just plays a leading role in this new technology. While setting the standard, it reasonably and appropriately deduces the standard incisively and vividly.
4. Preventive maintenance of airport runway
The use of road blasting machine makes it easy and simple to remove tire marks and markings on concrete and asphalt runways. In addition to birthmarks (except rubber), removing markings, restoring and increasing the surface roughness of airport runway and improving the friction coefficient of runway are all the treatment scope of road surface shot blasting machine. And in the process of treatment, with ease, the road shot blasting work is in order.
5. Municipal road and pavement
It should be said that the problem of urban construction can not be ignored in the new era, and municipal roads and pavement are more important in urban construction. Therefore, the role of road blasting cleaning machine in urban construction will be more and more important.
All kinds of road pavement in the city can be cleaned by shot blasting machine to remove the signs and markings on the road surface. The road surface can be roughened to improve the roughness and friction coefficient of the road surface at the crossroads with heavy traffic. Reduce the problems in pavement construction. Therefore, the auxiliary role of road blasting machine for urban construction is gradually standardizing and facilitating our life