China Types of Sheet Metal Bending

Sheet metal bending is a fundamental process used in the manufacturing industry to create various metal components. In China, sheet metal bending techniques have evolved over the years, offering a wide range of options for different applications. In this blog post, we will explore the various types of sheet metal bending methods commonly used in China.

1. V-Bending

V-bending is one of the most common types of sheet metal bending techniques used in China. This method involves clamping the metal sheet between a V-shaped punch and die, which then applies force to bend the sheet into the desired angle. V-bending is highly versatile and can be used to create different shapes, such as boxes, U-shaped channels, and brackets.

2. Air Bending

Air bending is another popular sheet metal bending technique utilized in China. It involves using a punch and a die to bend the metal sheet by applying pressure without fully bottoming out the punch. This allows the material to be bent without the need for a specific V-shaped tool. Air bending offers flexibility in achieving various angles and is commonly used in the production of automotive and aerospace components.

3. Edge Bending

Edge bending, also known as flanging, is a method used to create bends along the edge of a metal sheet. In China, edge bending is commonly employed to produce components with folded edges, such as enclosures, cabinets, and brackets. This technique utilizes a punch and a die to bend the sheet at a specific distance from its edge, resulting in a crisp bend with sharp corners.

4. Hemming

Hemming is a technique used to fold and bend the edge of a metal sheet onto itself to create a closed, rounded edge. This type of sheet metal bending is extensively used in China for manufacturing doors, panels, and other components requiring a flush and safe edge. Hemming is achieved by utilizing specialized dies and punches designed to fold the metal sheet over itself, creating a secure and aesthetically pleasing joint.

5. Roll Bending

Roll bending is a sheet metal bending technique that utilizes a set of rollers to bend the metal sheet gradually. In China, this method is commonly used for shaping cylindrical or conical components, such as pipes, tubes, and tanks. Roll bending offers precise control over the curvature and is suitable for producing components with large radius bends.

6. Rubber Pad Bending

Rubber pad bending is a specialized sheet metal bending technique employed in China for delicate or high-quality finishes. This method involves placing a rubber pad on the die surface to protect the metal sheet during the bending process, preventing any marks or scratches on the surface. Rubber pad bending is often used for bending stainless steel or aluminum sheets where surface quality is crucial.

7. Folding

Folding is a sheet metal bending technique used to create crisp and accurate bends along straight edges. In China, folding is commonly used for producing HVAC ductwork, electrical enclosures, and other components requiring precision folding. This method utilizes a dedicated folding machine with a clamping beam and folding beam to create the desired bends.

8. Press Brake Bending

Press brake bending is a versatile sheet metal bending technique used extensively in China. It involves using a press brake machine equipped with a punch and die to exert force on the metal sheet, bending it into the desired shape. Press brake bending offers precise control over the bending angle and is suitable for both simple and complex geometries.

These are just a few of the many types of sheet metal bending techniques commonly used in China. Each method offers its unique advantages and is suitable for different applications. Manufacturers in China have a wealth of expertise in these bending techniques, enabling them to efficiently produce high-quality sheet metal components.