should be selected grinding and profile grinding wheel hard to maintain the required shape precision grinding.
2013年7月30日星期二
Abrasive blasting
Brief introduction
Abrasive blasting abrasive short time, high efficiency, good benefits, and low prices. The product hardness, high toughness, good self-sharpening, sand consumption is
low and can recycle and reuse, grinding wheel pieces of finish is good; and chemical stability, wear resistance, acid and alkali. The abrasive media
Shell-shaped fracture, sharp corners, constantly smashing step in the formation of new edges and the side edge, making it superior to other Abrasive grinding capacity.
In particular it has a high hardness, specific gravity, chemical stability and its unique advantages of a self-sharpening abrasive blasting process used
Preferred; while the workpiece is cleaned sand-blasting, grinding and polishing the ideal material.
Principle
Abrasive blasting is the use of compressed air as a driving force to form a high-speed jet beam will spray material (copper sand, quartz sand, emery, iron ore, Hainan
sand) high-speed jet to the need to deal with the surface, the outer surface of the workpiece surface appearance or shape changes, since the
Abrasives on the surface of the impact and cutting action of the workpiece surface to obtain a different cleanliness and roughness of the workpiece surface to improve
the mechanical properties, thus improving fatigue resistance of the workpiece, and the coating of increased its adhesion between, extend the
The durability of the coating, but also conducive leveling and decorative coatings.
Precautions
1, before work must wear protective supplies, are not allowed to work naked arm. Work will not be less than two.
2, gas tank, pressure gauge, safety valve to regularly check. Tank two weeks once the dust emission, Shaguan inside the filter once a month.
3, check the vent pipe and blasting machine door is sealed. Work five minutes, shall actuate ventilation dust removal equipment, ventilation and dust removal equipment
failure, prohibit blasting machine work.
4, the compressed air valve slowly open, pressure must not exceed 0.8MPa.
5, sandblasting size should be adapted to the requirements of work, usually in ten to twenty number are applicable, sand should be kept dry.
6, sandblasting machine work, prohibit close. Cleaning and adjusting the operation site should be shut down.
7, who are not allowed to use compressed air to blow dust or joking.
8, after work, ventilation and dust removal equipment should continue to operate for five minutes and then off to discharge indoor dust, keep clean.
9, the occurrence of physical, equipment accidents, should be kept on-site, and report the relevant departments.
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