BENCH FOR TEMPERING OF HIGH-SPEED CENTRIFUGE SPINNING NEEDLE BEARING SURFACE Russian patent published in 2014 - IPC C21D1/09 B04B7/00 

FIELD: process engineering.

SUBSTANCE: invention relates to treatment of steel articles by direct effects wave energy and can be used at production of gas centrifuges at workstation of laser tempering of small-size bearing needle face surface. This bench comprises parallel-beam pulse laser with focusing mechanism of optical system composed by collecting lens and diverging lens, body of bath with cooling tempering fluid and sealed lateral quartz glass window at bath body vertical wall centre for transmission of laser beam, cartridge with non-hardened needles, container for hardened needles, tempering fluid pump and control unit. Additionally, this bench comprises horizontal web to divided bath body into top and bottom chambers. Cylindrical shell has first and second ends and through inner axial bore while section-like clamping stop has conical bore at section centre and axial stop of the shell second end. Shell is equipped with the drive of intermittent reciprocation between clamping and axial stops. Non-hardened needle holder is fitted inside said shell. Cartridge gate has mechanism for consecutive feed of non-hardened needles onto holder. Cooling fluid fine filters are arranged at pump inlet and outlet, while laminar flow forming grating is arranged inside said section. Note here that quartz glass window represents a diverging lens. Control unit output buses are connected appropriate input buses of laser starting control buses and pump motor and mechanisms of optical system focusing and cartridge gate drive. Collecting lend diverging lens, conical bore, cartridge with hardening needle and shell second end axial stop are arranged in the laser primary optical axis. Focusing mechanism ensures linear displacement of collecting lens in said axis relative to diverging lens. Laser beam spot diameter at needle hardening surface corresponds to its diameter.

EFFECT: higher hardness without affecting metal core mechanical properties.

4 cl, 7 dwg