Группа сегментов штамповки ходовой части бульдозера

Technical Requirements
1, castings processing must produce according to requirements and drawings
2, The workpiece is annealed to eliminate internal stress, the surface sand should be clean.Tooth tooth relative to the standard, the error should be controlled within ±5 range.
3, the modulation of heat treatment HRC30-36, surface frequency quenching, tempering the surface hardness of HRC48-HRC54, hardened layer 5-9mm, core hardness of HRC28 or more, hardened layer microstructure Required to achieve the M4-6 stages.
4, the mechanical tensile strength & N / mm²> 620, yield strength & N / mm 2> 375.