METAL HEMMING
Metal hemming is a process that involves folding the edge of the sheet metal to 180° onto itself. Then, two newly formed layers are flush with each other. Many automotive parts are produced by metal hemming, such as trunk lids, deck lids, hoods, tailgates and doors. There are 4 types of metal hemming: teardrop hem, closed hem, open hem and rolled hem. The closed hem is the most popular one as the process is simple. It is totally flush. However, it has material limitations, including thickness and angle limitations to avoid fracture.
WHAT IS THE PURPOSE OF METAL HEMMING?
Generally, metal forming is used to connect parts together to achieve a better appearance and strengthen the edges of parts.
HOW TO HEM MATERIAL WITH LOW FLEXIBILITY?
For some material such as aluminum, the closed hem is not an ideal choice, since the flexibility them are not enough and they are easy to break during the process. Instead, teardrop hem is the best choice for this material. It is a flange which is bent over more than 180° with only marginal inside radius change, and that is the reason why it can process that low-ductility without fracture.
WHAT IS THE DIFFERENCE BETWEEN METAL HEMMING AND METAL SEAMING?
Hemming and seaming are two very similar metalworking processing that both involve bending metal over onto itself. The difference is that seaming is to use a seam to join two layers of metal sheet together and two layers are not flush with each other while on the other hand two layers are flush with each other with hemming.
If you need any kinds of metal work fabrication, please contact us, as a professional fabrication work company, Hongkun is willing to offer you high quality products.
Send product request
Other supplier products
 |
MOVER SEAT MOUNT | Mower seat mount is set into the seat of the mower in order to support the seat against the weight and pressure from the driver. What we are manufa... |
 |
MOWER PARTS | Hunkmaching has been manufacturing oem mower parts used on many top brands including Bad Boy Mowers and John Deere. We offer good quality parts ran... |
 |
STEERING ARM ADJUSTER IN LAWN MOWER ACTUATOR | Steering arm adjuster is set between drive arm and steering arm elbow, which is consisted of lower adjuster and upper adjuster. It belongs to drive... |
 |
CAR GLASS LIFTER | The commonly used car glass lifteris composed of motor, reducer, guide rope, guide plate, glass mounting bracket, etc. It is a lifting device for a... |
 |
METAL FLANGING | Flanging refers to the stamping process of turning the edge or outer edge of the hole on the workpiece into an upright straight edge with a die. It... |
Same products
 |
Solid Tire For Mini Wheel Loader | Seller: Zhejiang Tongchao Industry and Trade Co., Ltd. | Solid Tire For Mini Wheel Loader（） It is composed of low heating and cutting-resistant materials... |
 |
RFG009 One-Piece forged barrel Series | Seller: Taizhou Dishun Trading Co., Ltd. | We have internationally advanced wheel rim production equipment, large-scale spraying productio... |
 |
entrance door locks handles | Seller: Wuyi Jiamin Locks Co., Ltd | Our entrance door locks handles are crafted from the highest quality materials, ensuring robustne... |
 |
Aluminum alloy rim -K | Seller: Jinhua Yosocoma Technology Co., Ltd. | Jinhua Yosocoma Technology Co., Ltd. locates in Jinhua city of Zhejiang Province, which is aAlumi... |
 |
fire rated door locks | Seller: Wuyi Jiamin Locks Co., Ltd | Elevate your building's safety standards with our premium fire rated door locks. Engineered to en... |
