#Tolerance de tolerie plus#

√ Holes shall be at least 2 times the sheet thickness from the start of the bend radius √ Consider K-factor to avoid deformation and tearing √ Keep the interior bend radii at least same as the material thickness √ Use the same radii with consistent bend orientations to reduce costs √ Add bend reliefs to prevent tearing and reduce the risk of springback √ Ensure the bend height at least double the material thickness plus the bend radius √ Mechanical character, ductility (elongation at break, machinability, weldability and tensile strength) √ Corrosion Resistance √ Weight √ Costĭue to the fact that all most all the sheet metal parts (except stainless steel parts) need surface treatment, so our quality department needs to perform pilot run inspection and mass production inspection before the fabricated parts are dispatched for surface treatment. √ Hole space should be at least 2 times the sheet thickness, and if holes are too close to each other, it can lead to deformation or split during forming. It is possible to laser cut holes with a diameter smaller than the material thickness, but to stay on the safe side, it’s better to have a diameter which is same size or greater than the sheet thickness. √ Hole diameter, hole diameter less than the thickness can lead to deformation due to the kerf or distortion caused by the laser beam. √ Material yield strength and tensile strength, it is often associated with springback effect. The more processes a part undergoes, the more difficult it becomes to achieve tight tolerances. √ Tolerance, sheet metal parts normally have bigger tolerances are compared with CNC machining parts because stress in the material can cause the material to stretch. √ Wall thickness, sheet metal products are fabricated from one sheet of metal, the part must maintain uniform wall thickness throughout. Joining is almost the last step of sheet metal fabrication, and it covers welding, fastening and soldering. The finishing of sheet metal is one of the most crucial steps in ensuring that the product does not only work, but works for as long as possible. Forming fabrication mainly consists of bending, stamping, rolling, roll forming, metal spinning, hemming, curling and drawing. Sheet metal forming is to make a nearly finished product, and it also adds strength and stiffness to an assembly. Punching and blanking, suitable for medium to high volume operations to create same shaped holes, and burrs need to be removed. Shearing, suitable for high volume operations, straight line cuts for softer materials that do not require a clean finish. The pros and cons of cutting without shear force.ģ.Less efficient as the material thickness increasesĤ.Serving industries which requires high accuracyġ.Cutting finish is worth the extra expenseĢ.Serving industries which requires high accuracyĬutting solutions with shear force 1. In sheet metal manufacturing business, cutting without shear force is extremely important, and it includes laser cutting, plasma cutting and water jet cutting. Metal cutting has two types: cutting with shear force and cutting without shear force.

Normally, the fabrication process has four main production solutions: metal cutting, forming, finish and joining. Sheet metal fabrication process consists of a set of manufacturing activities for turning sheet metal into functional parts or product. Sheet Metal Fabrication Tools √ CNC machine √ Press bend √ Mechanical stamping √ Hydraulic stamping √ Laser cutting machine √ Plasma cutting √ Laser punching machine √ TIG, MIG & Welding Robots Sheet Metal Fabrication Process Amongst all of the metal forming solutions, stamping press and CNC machine are the most used ones. The main part of sheet metal fabrication work is sheet metal forming which consists of punching, bending, shearing, deep drawing, bulging, spinning and stamping, and this production solution is specifically designed for steel, aluminum, stainless steel. It is a very flexible process, so it can be used in most industries to create everything from components to automotive bodies. Sheet metal fabrication is the process of turning sheet metal into metal structures by sheet metal forming, cutting, punching and assembly, and it serves wide industry sectors like aerospace, automotive, consumer goods, electronics, machinery, construction and infrastructure.

Tolerance de tolerie