Arcelor Mittal Tailored Blanks Zaragoza (hereinafter AMTBZ) began operating in mid 2000, originally belonging to the Aceralia corporation and later integrated into the Arcelor and Arcelor Mittal groups (hereinafter AM). Its laser welding division has a global presence and its plant has been a benchmark in specific fields.
AMTBZ was established as a company supplying the automotive industry, with customers such as GM, PSA and VWG. Its outstanding features being:
• High level of automation.
• Control of continuous processes.
• Integration of all processes in a safe working environment.
• Highly trained and motivated staff.
Products manufactured by AMTBZ are made using the Laser-Welded Tailored Blank procedure. This manufacturing system allows steels of different thicknesses and of different strengths and quality to be used on the same part.
The process of laser butt-welding two or more flat steel sheets of varying:
These blanks can be drawn or stamped onto a finished part with the engineered properties where customers need them most.
• Lower Total Cost.
• Reduced Part Weight.
• Improved Crash Management.
• Reduced Steel Consumption.
• Better Mechanical Properties.
• Eliminates Reinforcement Parts.
The process starts with the arrival of the steel coils at the plant, where they are safely stored taking their weight and dimensions into account.
AMTBZ has a blanking line to transform the coils into flat blanks. The line is equipped with a press on which various dies are mounted to obtain the different blanks. A magnetic “stop and go” type stacker is used to stack the blanks on pallets.
An automated transport system connects the Blanking line, the Automatic Warehouse and the Laser Welding through two trucks that supply the intermediate product from the automatic warehouse to the 4 welding areas, and pick up the finished product once the blanks have been welded and inspected.
In addition to human supervision, perfect welding work is checked continuously by four digital cameras. A team of workers perform auxiliary and inspection tasks at each stage of the process, being responsible for all tasks (safety being one of them).
FUNCTIONS IN VEHICLE
Structural parts and body