1.Angle grinder: the tool can be equipped with a thousand blade or a stainless steel bowl brush as required; The installation of the blade can be used to polish the welding spatter, the surface collision and scratch, the weld reinforcement and the machining reinforcement; The installation of stainless steel bowl brush can polish the long weld, and its main function is to remove the oxide scale in the welding area. There shall be no crack, weld bead, burn through, arc pit, sand hole and other defects on the polished weld surface. After polishing, the weld shall be free of surface pores, slag inclusion, crater, crack, arc scratch, ignition and other defects.

2. Straight shank grinder: only special stainless steel bowl brush can be installed on the tool; The tool can only grind the long weld before welding. The main difference from the angle grinder is that the grinder can obtain the same texture as the long weld.

3. Straight grinder: rotary file and abrasive cloth wheel can be installed on the tool as required; The installation of cone head rotary file can be used for grinding of weld joint, grinding of defects in small space, excessive grinding of deep knock (depth below 1mm), machining reinforcement grinding of narrow space, local fine grinding, etc; The installation of abrasive cloth wheel can carry out grinding and polishing in a small space that cannot be completed by the angle grinder, and polishing to the corner area, etc.

4.Scraper: This tool can remove edges and burrs and make the corner area of the workpiece too smooth.

Grinding and Polishing Methods

1.Grinding before Welding

Grinding range:15-50mm on both sides of all welds.

Operation method:when grinding long and wide welds, use angle grinder or straight shank grinder equipped with stainless steel bowl brush to grind along the weld direction; For the weld requiring laser tracking automatic welding, the straight shank grinder can only be used for grinding; When welding accessories on the surface of workpieces larger than the welding accessories, grind the welding surface with a thousand blade or polish the products requiring deburring treatment before welding forming.

Technical requirements:polish the metal luster, ensure that there is no oxide film in the welding area, the grinding grain is parallel and uniform with the weld direction, and the grinding depth shall not exceed 0.2mm.

2.Grinding of weld reinforcement

Grinding range: 25-50mm on both sides of the weld.

Operation method:when the angle grinder works, it shall be parallel to the polished surface to remove the weld reinforcement; When there is a depression in the weld, it is strictly prohibited to grind the surface with an oblique shovel at the end of the blade according to the standard of not damaging the base metal.

Technical requirements: the polished surface shall be smooth; No damage to the base metal, with the removal amount of the base metal not exceeding 0.2mm as the standard; The surface texture of the polished part shall be consistent. Irregular grinding is strictly prohibited along the weld direction.

3.Remove surface scratches

Grinding range: take the rectangular frame and cover the scratched area. Operation method: use the grinding tool to grind in a certain direction, no more than the rectangular frame.

Technical requirements:the polished surface shall be smooth; No damage to the base metal, with the removal amount of the base metal not exceeding 0.2mm as the standard; The surface texture of the polished part shall be consistent, and the transverse drawing direction of large parts and oven body and the drawing direction of small parts shall be consistent; Irregular grinding is strictly prohibited.

4.Grinding of machining reinforcement

Grinding range: 40-50mm on both sides of machining reinforcement.

Operation method:grind along the direction of the processed vertical bar, and grind with an angle grinder in the space where the angle grinder can be used; The space where the angle grinder cannot be used shall be polished with a straight grinder; The method is the same as the grinding of weld reinforcement.

Technical requirements: the polished surface shall be smooth; No damage to the base metal, with the removal amount of the base metal not exceeding 0.2mm as the standard; The surface texture of the polished part shall be consistent.

5.Polish with abrasive cloth wheel

Grinding range: polish the edges and corners of small spaces such as wire holes or some parts with polishing requirements.

Operation method: use a straight grinder equipped with abrasive cloth wheel to polish the edges and corners.

Technical requirements: the polished surface shall be smooth, and the visual inspection shall meet the drawing marking requirements, and the touch feeling shall be free of sharp edges and corners; It will not damage the base metal, and the removal amount of the base metal shall not exceed 0.2mm.

5.Air gun: This tool is used to clean the aluminum chips and dust on the workpiece surface after grinding; For safety, it is forbidden to blow directly to the human body.

6. Air duct: This tool is used for the connection between air source and pneumatic tool; For the sake of safety and energy conservation, if there is air leakage in the air duct, the air source shall be closed in time and the maintenance personnel shall be invited to repair.

7. Polishing machine:use cloth wheel to polish stainless steel products into shiny surfaces or welding parts, and then polish them. Before polishing, the surface of the product needs to be sanded without matte feeling. After polishing, the welding surface shall be free of defects such as pores, slag inclusion, crater, crack, arc scratch, ignition and so on.

8. Wire drawing machine: use the wire drawing wheel to draw the stainless steel product surface or welding part with XXX mesh. After drawing, the wire direction of the product surface is the same and the thickness is the same. There shall be no obvious stratification, blackening and yellowing.

6.Use a wire drawing machine for wire drawing.

Scope of wire drawing: after welding, grind the surface or scratch the surface of the parts for wire drawing.

Operation method: use a wire drawing machine to draw the polished surface or scratched surface to make the wire direction of the workpiece surface consistent And the luster lines are consistent.

Technical requirements: the wire drawing surface shall be smooth and consistent in luster and grain. The visual inspection shall meet the requirements of the drawing, and the touch shall feel rough and scrape the hand as the standard; Without damaging the base metal, the overall grain, silk grain direction, uniform color and thickness are the standard.

7.Grinding of weld joint

Grinding range: use a straight grinder to grind the weld joint and the arc starting and ending points of segment welding.

Operation method: use a straight grinder equipped with a rotary file to polish the weld joint and the arc starting and ending points of segment welding.

Technical requirements: the grinding of weld joint shall be consistent with the weld reinforcement; The grinding of segment fox starting point and closing point requires that there are no sharp edges and corners on the surface when the welding defects are removed; It will not damage the base metal, and the removal amount of the base metal shall not exceed 0.2mm.

Machining Scope:Precision Laser Cutting, Fiber Laser Cutting, CNC Robot Bending, Riveting, Welding, Broaching, Drilling, Tapping, CNC Machining, Metal Finishing, Assembling etc.

Category:Sheet Metal Cabinet; Custom Sheet Metal; Sheet Metal Bracket; Sheet Metal Box; Sheet Metal Frame; Sheet Metal Chassis; Sheet Metal Case; Sheet Metal Enclosure;