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The invention belongs to the technical field of heat treatment, relating to a heat treatment method for materials of a 25CrMo alloy steel hollow car axle for high-speed railway passenger trains. The… (More)
The invention discloses a heat treatment method for 30NiCrMoV12 alloy steel hollow car axle material for high-speed railway cars, which belongs to the technical field of heat treatment. The method… (More)
The invention relates to a device for detecting track traffic vehicle axles and other straight axle parts by adopting ultrasonic flaw detection technology. The device mainly comprises a feeding… (More)