Matters Needing Attention In Sheet Metal Bending Process

Sheet metal bending is a common and important metal processing technology, which is widely used in various industrial fields. During sheet metal bending, sheet metal is pressed and bent to form the desired shape. However, this process is not simple and easy, requiring workers to have professional knowledge and skills, while paying attention to a series of key issues.

1. Material selection: Before performing sheet metal bending, the first consideration is the selected material. Different materials have different properties and plasticity, so it is necessary to choose the appropriate metal material according to the desired shape and function. Common sheet metal materials include stainless steel, aluminum alloy, and carbon steel. Choosing the right material helps to ensure the stability of the bending process and the quality of the finished product.

2. Plate thickness: The thickness of the plate directly affects the ease of bending and the quality of the finished product. Thinner sheets bend easily, but may result in a weaker finished product, while thicker sheets require more bending force, which may result in inaccurate bend angles. Therefore, it is necessary to select an appropriate plate thickness according to actual needs.

3. Bending radius: The bending radius refers to the radius of the curve formed when the sheet is bent. Smaller bend radii mean larger bend angles, but also tend to cause cracks or wrinkles in the sheet. Therefore, when selecting the bending radius, the minimum bending radius specification of the material should be followed to ensure the quality and beauty of the finished product.

4. Pressure control: In sheet metal bending machines, pressure control is the key to achieving accurate bending. Too low a pressure may result in an incomplete bend, while too high a pressure may cause excessive deformation or damage to the sheet. Therefore, workers must strictly control the pressure of the bending machine and adjust it according to the material and thickness of the plate to ensure the stability and accuracy of the bending process.

5. Cold stamping and hot stamping: Sheet metal bending can be divided into cold stamping and hot stamping. Cold stamping refers to bending at room temperature, which is suitable for most common sheet metal materials. Hot stamping is bending at high temperature, which is suitable for some special materials or plates with larger thickness. Choosing the right bending method can help improve production efficiency and finished product quality.

6. Bending sequence: For workpieces with complex shapes, the bending sequence is very important. The correct bending sequence can avoid tearing and deformation of the sheet. The general principle is to perform inner bending first and then outer bending, and at the same time avoid too close distance between adjacent bendings, so as not to interfere with each other and affect the quality of the finished product.

7. Tooling design: Tooling refers to the device used to position and clamp the plate. Good tooling design can improve the accuracy and stability of bending. Workers should design appropriate tooling according to the shape and size of the workpiece to ensure that the plate maintains the correct position and angle during the bending process.

8. Prediction of bending angle: Before sheet metal bending, workers need to predict the bending angle. This can be achieved with calculation and simulation software. Accurate forecasts help avoid trial and error and wasted materials, improve production efficiency and save costs.

9. Technical proficiency: Sheet metal bending is a technical activity that requires workers to have solid professional knowledge and rich experience. Only by proficiency in the bending process can workers flexibly respond to various situations in actual operation and ensure the smooth progress of the bending process.

10. Regular maintenance: sheet metal bending machines need regular maintenance and maintenance to ensure their normal operation and accuracy. Regularly check the lubrication, pressure, tooling and other parts of the machine, find problems and repair them in time, which will help to extend the service life of the equipment and maintain efficient production.

11. Safety measures: Sheet metal bending involves mechanical equipment and a lot of energy, so workers must strictly abide by safety operating procedures when operating. Wear appropriate personal protective equipment to ensure safe operation of the equipment and the safety of the surrounding environment.

12. Quality inspection: Finally, after sheet metal bending, the finished product should be inspected for quality.