Burr Direction In Sheet Metal

Steps to design any sheet metal stamping press tool or die.

Burr direction in sheet metal.

But what if press tool is not working efficiently or it takes many more operations to produce stamped parts. They include burrs fracture burnishing rollover and work hardening. The metal stamping quote will include the cost for the tooling tool die set to produce the parts and also the part cost. De burring can be avoided by considering the direction of the burrs in the design of the parts.

Burr height up to 10 of material thickness can be expected. In manufacturing practice sharp tools can mitigate burrs. Attaining a burr free cut is about ensuring the beam parameters and gas dynamics work together to ensure the right amount of molten metal evacuates the kerf at the right time and in the right way. To the edges where burrs may occur to reduce the occurrence of burrs.

It is usually an unwanted piece of material and is removed with a deburring tool in a process called deburring. The burr is a thin ridge of material that is formed due to the elongation of metal during the final separation of the sheet. Burr commonly occurs when producing sheet metal parts using different manufacturing methods. In those instances deburring is necessary.

Figure 2 a burr or protruding ragged edge shown at 100x magnification occurs as the material is sheared at an angle against the blanking direction. Creation of a formed feature by angular displacement of a sheet metal workpiece. Using burr free design such as. 2 workpiece resulting from blanking operation.

Figure 3 a microcrack that occurred during. Clearly the formation of burr should be avoided whenever possible. Metal burr extending beyond the edge of the cut piece view on the cut face top and from the bottom bottom a burr is a raised edge or small piece of material that remains attached to a workpiece after a modification process. Add grooves cuts rounded corners etc.

More ductile metals tend to form larger burrs. So it is very important to design an economy friendly and time saving press tools. But as a side product of many manufacturing methods it is often unavoidable. Which manufacturing methods leave a burr.

Figure 1 the sheared edge exhibits some distinctive characteristics. If operators and technicians try to solve cut quality problems without considering the process fundamentals they may be shooting in the dark. These combined costs are compared to sheet metal prices for an anticipated cost savings. See also drawing and forming blank 1 sheet metal stock from which a product is to be made.

For elevator stainless steel sheet metal parts the product design department considers the burr formation mechanism and removal method at the product and process design stage to minimize burrs. Burrs can interfere with subsequent forming processes. The sheet metal stamping process is a very fast and precise manufacturing process.