Blue Annealing
แปลว่า(english) Heating hot rolled ferrous sheet in an open furnace to a temperature within the transformation range and then cooling in air, in order to soften the metal. The formation of a bluish oxide on the surface is incidental.
หรือคุณกำลังค้นหา Blue Annealing, Normal stress:, Load testing, Normal strain:, Aesthetic design, Gravity:, Aging 2, Refactoring