Baltic Hastelloy X History of engineering & technology Monel 400 alloys Technology: general issues assembly line balancing bottleneck station candidate order-based genetic algorithm cell formation cell manufacturing design cluster algorithm combinatorial optimization customization cutting force decision-making design of experiments digital platforms electrochemical machining (ECM) facility layout flexible job-shop scheduling problem genetic algorithm grass-hooper optimization algorithm grey wolf optimizer (GWO) group technology harmony search algorithm heuristic approach hybrid bat algorithm insurance liquid nitrogen machine and process selection