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Suitable for renewal of impeller shaft, thrust shaft, drive shaft and twist shaft coupling of mud pump

Publisher: Ever-Power Mechanical Equipment
2014-06-23

Suitable for mud pump impeller shaft, thrust shaft, drive shaft and winch shaftCouplingRenewal

1, 材料:ZG25Ⅱ、ZG35Ⅱ、HT200;Q23、A4、A5、20、25、30、35钢。

2, Steel castings should be annealed, forgings should be normalized, and the hardness should not be less than 179-197HBW.

3, The surface of the casting should be cleaned, and there should be no fleshy, scarred, sticky sand, etc.

There should be no cracks, sand holes, pores, shrinkage, slag inclusion, and other defects that can not be removed during mechanical processing and affect the quality of the casting surface.

For cracks on steel castings, if the depth does not exceed 1/2 of the thickness, and the length does not exceed the shaft strength or flange edge width, repair welding is allowed after the defects are eliminated.For defects such as sand holes, pores, shrinkage holes and slag inclusions, if the depth does not exceed 1/2 of the thickness, and the diameter does not exceed the thickness of the place, repair welding is allowed after the defects are eliminated.

4, The surface of the forging should be clean, and there should be no defects such as oxide scale, folds, delamination and cracks.

5, The coupling and shaft of the red sleeve should meet the requirements, and post-processing should be performed after the red sleeve.

6, Couplings with tapered holes should be post-processed after assembly.

7, Couplings welded to the shaft should be annealed after the welding is completed, and then processed.

8, The roundness and cylindricity of the coupling hole should not exceed 0.02mm.

The flatness of the rigid coupling should not exceed 0.03mm.The plane and line perpendicularity of the rigid coupling should not exceed 0.05mm/mm.Flexible couplingThe requirements for rigid couplings can be doubled.

9, The screw holes of the couplings that are connected to each other should be reamed together.

10, The outer diameter of the couplings connected to each other should be the same, and the error should not exceed 0.03mm.

11, Elastic pin couplingThe pitch circle diameter of the pin hole and the elastic sleeve hole should be equal, and the error should not exceed 0.1mm.After the two couplings are aligned, the pin hole and the elastic sleeve hole should be aligned, and the coaxiality shall not exceed 0.1mm.