A new technology and equipment of annealing and bluing for finished stator and rotor of uncoated cold-rolled electric steellamination in bell-type hytrogen furnace was introduced.
A new technology and equipment of annealing and bluing for finished stator and rotor of uncoated cold-rolled electric steellamination in bell-type hydrogen furnace was introduced.
Structural steel material of main hull structure to be of the quality as required by the Classification Society and shall be free of cracks, lamination, surface defects and other defects.