| 摘要 |
PURPOSE:To attain to prevent the local irregularity in printing capacity by making it possible to uniformize a sand mesh, by vibrating the confluent jet stream of the jet stream of the high pressure liquid injected from a nozzle and the slurry containing a fine powder of a polishing material emitted from the flurry orifice of said nozzle to allow the same to collide with the surface of a metal. CONSTITUTION:An aqueous slurry is supplied from the slurry supply port 1 of a nozzle while high pressure water is supplied from a high pressure supply port 4 to be injected from high pressure water jet orifices and blown to the surface of a metal web along with the slurry. At this time, the nozzle is vibrated to the lateral direction of the metal web or the direction vertical to the metal web. By this method, the irregular parts formed by projection patterns are dispersed to the lateral direction and uniform surface quality can be obtained as a whole and the local irregularity of printing quality and capacity is also eliminated. The composition of the slurry consists of water and a fine powder of a polishing material and the concn. of the fine powder is about 5-80 wt.%, usually. about 30-50 wt.%. |
