Mud Pump Parts
Fluid End Parts
MARSMILL TECH CO.,LTD produces professional Fluid Ends of mud pump including F500-F1600 series, 3NB series and PZ series.
Specifications
- Model
- F500-F1600 series
- Model
- 3NB series
- Model
- PZ series
-
- The blank is made of high-strength alloy steel 35 CrMoA and 40Cr MoMn, with ultrasonic detection as forging , secondary refining by electric furnace and deoxygenation if needed. After normalizing and rough processing, the inner wall of the blank is quenched and tempered until the rigidity meets HB285-330.
- The forging pieces are forged three dimensionally with forging ration of no less than 4.0:1.0. No defects such as interlining, crack, impurities, delivery, overburning and weldment are discovered in forgings which comply with JB/TQ252-81 after examination of class III.
- The curve of each cylinder in inner chamber is chamfered manually or by the grinding wheel into circular arc Rz8, and is examined by the pressure test of 49Mpa and 1 hour.
- Tests such as ultrasonic detection, magnetic particle detection, size inspection and thermal test are performed.
- Mechanical properties: σb≥850Mpa, σS≥670Mpa, δ≥5%, ψ≥30%
