Tongxin precision Forgings factory example: 40 cr forgings after quenched and tempered treatment used in the manufacture of medium speed, load of the forgings, such as gear, shaft, worm, spline shaft, thimble set of forging, conditioning and high-frequency surface hardening after used in the manufacture of high surface hardness, wear resistance of forging, such as gear, shaft, shaft, crankshaft, spindle, sleeve, pin, connecting rod, screw nut, inlet valve, such as forging products, After quenching and tempering temperature in forging used in the manufacture of heavy, medium speed impact, such as oil pump rotor, slider, gear, shaft, sets of ring, etc., used in the manufacture of reloading after quenching and low temperature tempering, low impact and abrasion resistance of forgings, such as worm, such as main shaft, shaft, thimble, carbonitriding place namely after manufacture large size, high low-temperature impact toughness of the transmission of forgings, Such as shaft, gear and other forging products.
So 40Cr forgings are commonly used materials in forging factory production.