Technology

Abstract: Two of the bearing rollers which were made of G20Cr2Ni4A steel with carburizing + quenching + three times of tempering, fractured during the

Abstract: Surface cracks on Railway Bearing rollers were analyzed using methods such as magnetic particle inspection, cold acid washing, and metallogr

Abstract: By analyzing the key technical indexes for bearing roller of foreign shield machine,such as chemical composition,hardness and microstructure

Abstract : High and low magnification metallographic observations were carried out on rollers with low local hardness values, and the raw materials an

G20Cr2Ni4 steel is commonly used in the production of rolling mills and super large bearings that can withstand heavy load impacts. After carburizing

Abstract: By analyzing the key technical indexes for bearing roller of foreign shield machine,such as chemical composition,hardness and microstructure

Abstract A precision multifunctional progressive stamping die, comprising a lower die, an upper die, and inner and outer guide mechanisms. The upper d

Abstract It involves a progressive stamping die used for producing metal parts. There are upper and lower mold seats, upper and lower guide sleeves, u

Abstract A medium and heavy-duty automobile flange forging process and its punching correction composite mold, belonging to the forging processing tec

Abstract A large driving wheel hammer upper forging die, comprising: upper die, lower die, equipment hammer head, equipment gripper; The upper mold is

Abstract The present invention discloses a cold forging process for starting gear end face teeth, comprising the following steps: 1) using a CNC sawin

Abstract A cold forging process for starting gear end face teeth, including cutting, annealing, billet making, surface lubrication, pre forging teeth,