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SACSO
SACSO stands for steel assignment cutting and slitting optimization. SACSO handles stock assignment to production orders for different processes sharing a common stock. This assignment process encompasses the optimization of feasible cutting patterns in order to minimize the steel loss.
This optimization is made possible by the following mechanisms:
Automatic generation of feasible matches for each coil and each production order based on the assignment criteria defined by the user (coil to order matches). This matching procedure assigns scores to the different matches based on the user preferences. This allows for instance to orient suitably the coil assignation to the most preferred process.
Automatic generation of matches among production orders: order-to-order matches. In the same manner as coil to order matches order-to-order matches have scores reflecting the preference in mixing orders on the same coil. For instance if orders are compatible but far in due dates, it might be preferable not to assign them to the same coil. This weighting of the matches solves also the common stock problematic by forbidding the assignment of different process orders (slit orders with cut orders for example) on the same coil.
Optimization of the assignments and the cutting patterns by selecting the best feasible matches out of this population and by minimizing the resulting scrap. Besides the matches' preferences, the scrap minimization allows to solve the competition among the different processes regarding the parallel stock (the coil will be assigned to the process raising the less scrap).
Handling of flow constraints to balance the stock between the different lines and processes.
Compatible orders can be combined on the same compatible coil. In some cases (certain lines), the trimming possibilities have to be considered.
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