Doors can be divided into the following types according to their production process:
Integral door: The inner and outer panels are stamped from a whole steel plate and then wrapped around the edges. The initial mold input cost of this production method is relatively large, but the relevant inspection fixtures can be reduced accordingly, and the material utilization rate is low.
Split door: It is made of tailor-welded door frame assembly and door inner and outer panel assembly. The door frame assembly can be produced by rolling, with low cost, high productivity, and low overall corresponding mold cost, but later inspection fixtures High cost and poor process reliability.
The overall cost of the integral door and the split door is not very different, and the relevant structural forms are mainly determined according to the relevant modeling requirements. Due to the current high requirements for automobile styling and high production efficiency, the overall structure of the car door tends to be split.