A Vacuum Cladding Surface Strengthening Method for Fracturing Pump Valve Body and Valve Seat
A vacuum cladding and surface strengthening technology, which is applied in the field of vacuum cladding surface strengthening of fracturing pump valve body and valve seat, can solve problems such as wear and corrosion, and achieve the effects of low cost, good heating uniformity and small internal stress
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Embodiment 1
[0015] (1) Surface pretreatment of the workpiece: remove oil, impurities, scale, etc. on the surface of the 20CrMnTi steel piece before coating the powder coating.
[0016] (2) Preparation of powder raw materials, the composition of the ingredients by weight percentage is 10% of WC powder with a particle size of -325 mesh, and 90% of Ni-Cr-Mo-Fe-B-Si-C alloy powder with a particle size of -200 mesh.
[0017] (3) Prepare the mixed powder, weigh the powder according to the weight ratio of the powders described in step (2), and roll the ball mill for 3 hours to form the mixed powder and put it into a ziplock bag for use.
[0018] (4) Mix and stir the mixed powder and binder evenly to make a slurry, coat the surface of the workpiece with a thickness of 1 mm, put it in a vacuum drying oven and dry at 80° C. for 8 hours. After it dries, simple repairs can be made to make the coating more uniform and complete.
[0019] (5) Put the coated workpiece into the vacuum sintering furnace f...
Embodiment 2
[0021] (1) Workpiece surface pretreatment: remove oil, impurities, scale, etc. on the surface of 8620H steel parts before powder coating.
[0022] (2) Preparation of powder raw materials, the composition of the ingredients by weight percentage is WC powder 20%, particle size is -500 mesh, Ni-Cr-Mo-Fe-B-Si-C alloy powder 80%, particle size is -200 mesh.
[0023] (3) Prepare the mixed powder, weigh the powder according to the weight ratio of the powders described in step (2), and roll the ball mill for 3 hours to form the mixed powder and put it into a ziplock bag for use.
[0024] (4) Mix and stir the mixed powder and binder evenly to make a slurry, coat the surface of the workpiece with a thickness of 2mm, put it into a vacuum drying oven and dry at 80°C for 8 hours. After it dries, simple repairs can be made to make the coating more uniform and complete.
[0025] (5) Put the coated workpiece into the vacuum sintering furnace for cladding and sintering, and the vacuum degree ...
Embodiment 3
[0027] (1) Surface pretreatment of the workpiece: remove oil, impurities, scale, etc. on the surface of the 4145H alloy structural steel before coating the powder coating.
[0028] (2) Preparation of powder raw materials, the composition of the ingredients by weight percentage is WC powder 5%, particle size is -325 mesh, Ni-Cr-Mo-Fe-B-Si-C alloy powder 95%, particle size is -200 mesh.
[0029] (3) Prepare the mixed powder, weigh the powder according to the weight ratio of the powders described in step (2), and roll the ball mill for 3 hours to form the mixed powder and put it into a ziplock bag for use.
[0030] (4) Mix and stir the mixed powder and binder evenly to make a slurry, coat the surface of the workpiece with a thickness of 3mm, put it into a vacuum drying oven and dry at 80°C for 8 hours. After it dries, simple repairs can be made to make the coating more uniform and complete.
[0031] (5) Put the coated workpiece into the vacuum sintering furnace for cladding and ...
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