2013年12月12日星期四

Coated Abrasives Grinding basic knowledge of some simple introduction

1, coated abrasives grinding points and Scope Coated Abrasives is a flexible abrasive from the abrasive substrate and binder made. Efficient cold cutting object point coated abrasives grinding grinding flexible, widely used:
(1) large flat thick, thin sheet, including processing metal strip;
(2) mass production of a variety of  Sanding Sheets metals, non-metallic workpieces; (3) complex surface of the workpiece forming grinding and polishing; (4) metal pipes of various diameters, rods, cylindrical grinding roll material curved surface grinding, internal grinding, etc..
(5) the use of a wheel or drum sand cover page can replace buff polishing; 6) discoid products are used in large-scale housing, box, hull, bridges, etc. weld grinding, deburring, rust and other aspects of a large area, efficient, convenient and safe. 2, the grinding mechanism of belt
 Coated Abrasives can be understood as a multi-tool knife multi-blade composed of many grains. Coated Abrasives grit is evenly distributed in the surface of the substrate, essentially single distribution. Coated Abrasives special abrasive used, the basic requirements of a high  grinding wheel manufacture clay content, uniform particle size, so that the surface of the abrasive coated abrasives have a good high order. In particular, the production of coated abrasives modern electrostatic sand-planting process to ensure sharp outward abrasive, abrasives orientation. Coated Abrasives abrasive surface and contour given pumping arrangement, and is an important factor in high efficiency and cold grinding coated abrasives to keep grinding. Typical is the difference between grinding wheel "with a belt grinding surface by increasing vertical loads (grinding pressure), rather than by increasing the belt speed to develop.
Belt line speed usually within 15-35 m / s range, rarely more than 50m / s.
 Belt during the grinding process, the occurrence of three different processes: Swipe - abrasive swipe on the workpiece, resulting in elastic deformation of the workpiece material, plows - abrasive plastic flow caused by the workpiece material, so Materials produced and squeeze as moving forward from the bottom and sides of extruded grains, while removal abrasive paper sheet  of a small amount of material; cutting - material produced fracture in the formation of chips in front of the slide, there is quite fast removal rate. The above three processes are connected to each other, wherein the cutting process is grinding the most effective form.

没有评论:

发表评论