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1. WO2007033473 - PROCESS FOR HARDFACING A PROGRESSING CAVITY PUMP/MOTOR ROTOR

Publication Number WO/2007/033473
Publication Date 29.03.2007
International Application No. PCT/CA2006/001537
International Filing Date 20.09.2006
IPC
C23C 4/04 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
04characterised by the coating material
B05D 5/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
5Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
02to obtain a matt or rough surface
B05D 3/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
3Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
12by mechanical means
B24C 3/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
3Abrasive blasting machines or devices; Plants
32designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
C23C 4/02 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 4/06 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
04characterised by the coating material
06Metallic material
CPC
C23C 4/02
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 4/06
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
04characterised by the coating material
06Metallic material
C23C 4/129
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
12characterised by the method of spraying
129Flame spraying
C23C 4/18
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
18After-treatment
F01C 21/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
21Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
08Rotary pistons
F04C 13/008
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
13Adaptations of machines or pumps for special use, e.g. for extremely high pressures
008Pumps for submersible use, i.e. down-hole pumping
Applicants
  • KUDU INDUSTRIES INC. [CA]/[CA] (AllExceptUS)
  • COULAS, James [CA]/[CA] (UsOnly)
Inventors
  • COULAS, James
Agents
  • FRITZ, Joachim T.
Priority Data
60/718,32920.09.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR HARDFACING A PROGRESSING CAVITY PUMP/MOTOR ROTOR
(FR) PROCEDE DE SURFAÇAGE D'UN ROTOR DE POMPE/MOTEUR A VIS HELICOIDALE EXCENTREE
Abstract
(EN)
A method of hardfacing a metal body, including the steps of flame spraying a metallic material onto a surface of the metal body to produce a layer of the metallic material on the metal body and fusing the layer of metallic material to provide a hardfacing layer, is improved by roughening the surface of the metal body prior to the step of flame spraying to provide a mechanical bond between the metal body and the hardfacing layer. The roughening is carried out to achieve a surface roughness adjusted to the thickness of the hardcoating. The surface roughness is preferably 40%-90% of the thickness of the hardfacing layer. A rotor for a progressing cavity pump/motor, including a metallic rotor body having a surface, and a layer of hardfacing on the surface, the hardfacing comprising of fused flame sprayed metallic material, the surface of the rotor body having an average surface roughness of at least substantially 6 mils with irregular protrusions for providing a mechanical bond between the rotor body and the hardfacing.
(FR)
L'invention porte sur un procédé de surfaçage d'un corps métallique qui consiste à projeter à la flamme un matériau métallique sur une surface du corps métallique de façon à former une couche de matériau métallique sur le corps métallique et à faire fusionner la couche de matériau métallique pour obtenir une couche de surfaçage, ce procédé étant amélioré par la rugosification de la surface du corps métallique avant d'effectuer la projection à la flamme de façon à former une liaison mécanique entre le corps métallique et la couche de surfaçage. La rugosification est effectuée pour obtenir une rugosité de surface ajustée à l'épaisseur du revêtement dur. La rugosité de surface est de préférence comprise entre 40 % et 90 % de l'épaisseur de la couche de surfaçage. L'invention porte également sur un rotor d'une pompe/moteur à vis hélicoïdale excentrée, rotor dont le corps métallique présente une surface sur laquelle est appliquée une couche de surfaçage, le surfaçage comprenant le matériau métallique projeté à la flamme, fusionné, la surface du corps du rotor ayant une rugosité moyenne d'au moins sensiblement 6 millièmes avec des parties saillantes irrégulières, ce qui permet d'obtenir une liaison mécanique entre le corps du rotor et le surfaçage.
Also published as
Latest bibliographic data on file with the International Bureau