拔断
1.RESEARCH ABOUT THE EFFECT TO ADD RARE EARTH ELEMENTS IN M42 HIGH-SPEED STEEL ON BREAKING RATE WHEN DRAWING WIRE BAR
2.When charging completes (indicator off), remove the charger from the electrical outlet, press the release tab, and detach the charger from the headset.
3.The reason of the brittle rupture of 4Cr9Si2 steel wire for valve during cold drawing after medium annealing is carefully analyzed by means of SEM/EDX, phase extraction & X-ray diffraction analysis and Thermo-Calc thermodynamic phase calculation, etc.
5.The results indicate that the field control cone is im portant in design of insulation structure of the terminals and joints of flexibl e cable. The elastic and permanent distortion of EPR used as main insulating mat erial should be 50% and 2% respectively. The surplus tolerance of sizes between XLPE and EPR should be 1.7~2.6.

