2021 New Style Stamped Sheet Metal Parts - Automotive Cross Member Part – Meiln

Brief Description: Seamless Welding Process

Part Name: Automotive Cross Member Part

Material Grade: Material Grade LAH420Y480T

Material Size: Material size is 2.20mm x 775mm x 215mm

Stage Process: 500T Progressive Blanking and 2000T Transfer with 5 stages

Cavity: Tool cavity is one part out

Press Machine: 630T Mechanical and 1200T Mechanical

Feeder Machine: Coil material for trial

Inspection Tool: Checking fixture, CMM

Lead Time: 3.5 months

Technical Key Point: the middle central area seamless welding

In order to meet the requirement of seamless welding for the central area, part surface, especially flatness must be in a high quality.

Seamless welding is commonly used in the automotive industry mostly known as piping and tubing, and seamless welding machine.

Here what we discussed is automotive child product welding, not steel pipes or tubes. For automotive product seamless welding, it requires high flatness of the welding surface, no clearance. Fit and match correctly with the opposite product is the target.

How to make seamless welding succeed?

For the product, the key point is trim line and surface flatness quality, with smooth surface, no hole deformed, no burrs and no dents, especially for notch areas.

In the die processes, flange mostly determined the surface quality. To control this important welding area, we have checked carefully. The first die off parts quality nearing 95%, however, surface not good enough for seamless welding. The forming steel coating and surface have been double reviewed and tested.

In the process of seamless welding, product deforming, twist and splitting might be occurred due to different material grade, thickness and shape.

Although the key point is metal product in high quality, while should pay attention to other factors.

Please contact with us about seamless welding, if you have query about process, quality control and improvement, we will share with you our opinions.