The rough and materials of the shaft parts

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A) shaft parts rough
Selection of bars, forgings and rough form. Less for the outer diameter of the shaft, shaft parts according to the requirements, production type, condition of equipment and structures. Generally the m ain bar; For the outer diameter of the difference between big stepped shaft or shaft, often used in forging, so that both savings and reduce the workload of the machining, but also improve the mechanical properties.thin ball bearings
The rough forging free and die forgings two way. Small and medium batch production to use more free forging different according to the scale of production. A large number of mass-produced using forging.
B) the information of the shaft parts
The axle parts requirements, depending on the working conditions and the use of selection of different data and different heat treatment specifications (such as quenching and tempering, normalizing, quenching, etc.) to get a certain amount of strength, toughness and wear resistance.steel ball bearings
The prices cheap after quenching and tempering (or normalized), 45 steel shaft parts used. Better cutting performance can be obtained, but higher mechanical properties such as strength and toughness, after quenching, surface hardness up to 45 ~ 52HRC
These steel quenched and quenching, 40Cr, etc. alloy structural steel suitable for medium precision and high speed shaft parts. Has good mechanical properties.
Appearance up to 50 ~ 58HRC hardness and higher fatigue resistance and good wear resistance, induction hardening of quenched and the surface of GCr15 bearing steel and spring steel 65Mn. Axis of higher accuracy can be manufactured.
Not only get high appearance hardness, precision machine tool spindle (eg grinding wheel axis jig borer spindle) to selection 38CrMoAIA nitride steel. This steel is quenched and the surface nitriding. And can keep a relatively soft core portion, and therefore good resistance to impact toughness. And carburized steel, heat treatment deformation is small, higher hardness character istics.big ball bearing