1.小型风动或电动除锈
主要以电或压缩空气为动力,装配适当的除锈装置,进行往复运动或旋转运动,以适应各种场合的除锈要求。如角向磨光机、钢丝刷、风动针束除锈器、风动敲锈锤、齿型旋转除锈器等,属于半机械化设备,工具轻巧、机动性大,能较彻底去除锈、旧涂层等,能对涂层进行打毛处理,效率比手工除锈大大提高,可达1—2m2/h,但不能除去氧化皮,表面粗糙度较小,不能达到优质的表面处理质量,工效较喷射处理低。可在任何部位使用,特别在修船过程中得到广泛应用。
2.抛丸机(砂)除锈
主要以颗粒喷射冲蚀作用构成的以达到表面清洁和适宜的粗糙度,设备包括敞开式喷丸(砂)除锈机、密闭式喷丸(砂室)、真空喷丸(砂)机。敞开式喷丸(砂)机应用较为广泛,能较为彻底地清除金属表面所有的杂质,如氧化皮、锈蚀和旧漆膜,除锈效率高4—5m2/h,机械程度高,除锈质量好。但对由于磨料一般不能回收,对其他作业有影响,清理现场麻烦。所以环境污染较重,近来逐渐被限制使用。
3.高压水磨料除锈
利用高压水射流的冲击作用(加上磨料的磨削作用)和水撬作用破坏锈蚀和涂层对钢板的附着力。其特点是无粉尘污染,不损伤钢板,大大提高除锈效率,可达15m2/h以上,除锈质量好。但除锈后的钢板易返锈,须涂装专门的带湿除锈涂料,对一般性能涂料的涂装有较大影响。
中译英:
1 Small pneumatic or electric rust removing
Major in electric or compressed air as a driving force, the assembly suitable descaling device, reciprocating or rotary motion, in order to adapt to the requirements of various occasions of rust. If the angle grinder, wire brush, pneumatic needle beam rust remover, pneumatic chipping hammers, tooth type rotary device, which belongs to the half mechanization equipment, light weight, mobility, can thoroughly remove rust, old coating, can on the coating for wool processing, greatly improving the efficiency than manual derusting,1-2 m2/h, but cannot remove the oxide skin, the surface roughness is small, cannot achieve high-quality surface treatment quality, work efficiency is low injection processing. Can be used in any part, especially in the repairing process is widely used.
2 Shot blasting machine(sand)derusting
Mainly in particle jet erosion form to reach the surface cleaning and appropriate roughness, device includes open shot peening(sand)derusting machine, shot peening(closed type sand chamber), vacuum peening machine(sand). Open type shot blasting machine(sand)is widely used, can thoroughly clean metal surface all impurities, such as scale, rust and old paint film, high derusting efficiency of 4-5 m2/h, high degree of mechanical, derusting quality. But due to the abrasive generally cannot be recycled for other operations, have effect, clean up the site. Therefore, environmental pollution is heavier, recently gradually by the restriction of the use of.
3 High-pressure water abrasive rust
Using high pressure water jet impact ( plus the role of abrasive grinding ) and the prized role of water damage and corrosion coating on the steel adhesion. Its characteristic is that there is no dust pollution, no damage to steel, greatly improve the efficiency of more than 15m2/h, derusting, derusting quality good. But after rust removal of steel easy return to rust, coating specialized with wet rust paint, on the general properties of the coating technology has a great influence on.
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