Fully automated, high productivity, hot stamping line with feeders that improves productivity rates and process control using less space in the plant
One of the technologies that is taking momentum in the production of structural parts of vehicles is that of hot forming boron steels. Despite being a process used by the majority of European manufacturers, in recent years its use has been extending to markets such as Asia and North America due to the superior performance and weight reductions that it achieves.
The unstacking of blanks is one of the key elements that must be designed to avoid bottlenecks in the installation, either with the current or future production parameters or when faced with possible reductions of cycle times from other elements of the installation. For this reason the Company has opted for a basic configuration using a three-axis linear feeder capable of moving weights up to 120 Kg, ensuring total cycle times, including marking, of 10 sec.
The integrated roller furnace has a useful width of 2200 mm so that the pieces are fed transversely in the direction of feed, ensuring high rates of productivity without excessively increasing the length of the installation.
Thus, only exceptionally long or narrow work-pieces cause reduced processing capability of the installation and, on average, even with a furnace with a usable length of less than 30 metres, it is ensured that this is not a bottleneck in the installation.
The press tonnage is important not only for the forming of the parts but also for ensuring a seal with high surface pressure that allows faster heat transfer and thus reduces the time of die closure. Furthermore, considering that depending on the part size, between 2 to 4 parts can be processed simultaneously in a single operation, the latest installations required by customers, and which is gradually becoming a standard for the stamping sector, have a press of 1200Tn and table dimensions of 3000 x 2200 mm.
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