CN113070551A - Method for repairing damaged propeller brass C35300 alloy component for ship - Google Patents
Method for repairing damaged propeller brass C35300 alloy component for ship Download PDFInfo
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- CN113070551A CN113070551A CN202110470249.9A CN202110470249A CN113070551A CN 113070551 A CN113070551 A CN 113070551A CN 202110470249 A CN202110470249 A CN 202110470249A CN 113070551 A CN113070551 A CN 113070551A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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Abstract
The invention discloses a method for repairing a damaged propeller brass C35300 alloy component for a ship, which comprises the following steps: s1: detecting a damaged area of a brass C35300 alloy component of the propeller to be repaired, determining the shape and the size of the damaged area of the component, planning an arc additive manufacturing repair path and process parameters, determining the size of a weld bead according to the planned repair path and the process parameters, and calculating the number of the weld beads required by additive repair; s2: preprocessing the area to be repaired of the component; s3: and (3) taking a copper alloy welding wire as a cladding material, taking a mixed gas of argon and helium as a protective gas, welding by a cold metal transition technology, and performing additive manufacturing and repairing according to a planned path to finish the arc additive manufacturing and repairing of the damaged propeller brass C35300 alloy component for the ship. The invention can realize the reutilization of damaged copper alloy parts of ships, improve the material utilization rate and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of additive remanufacturing of copper alloy, in particular to additive remanufacturing of a damaged propeller alloy member for a ship, and particularly relates to a method for repairing the damaged propeller brass C35300 alloy member for the ship through CMT arc additive manufacturing.
Background
The CMT additive manufacturing technology belongs to one of electric arc additive manufacturing technologies, wherein the electric arc additive manufacturing technology uses a gas shielded welding method for reference and is optimized, metal wires are used as basic materials for additive manufacturing, electric arcs are used as heat sources to melt the metal wires, and a high-temperature liquid metal droplet transition mode is adopted to build up welding layer by layer to manufacture solid parts with compact structures. The electric arc additive manufacturing formed part has the advantages of uniform structure and good metallurgical bonding performance, and compared with other additive manufacturing technologies, the technology has high production efficiency and is suitable for manufacturing large parts. Arc additive manufacturing techniques are divided into three types according to the nature of the heat source: the gas metal arc welding technology is high in deposition rate and 2-3 times that of the gas metal arc welding technology or the plasma arc welding technology. However, gas metal arc welding is less stable and produces more weld fumes and spatter due to the direct current applied to the feed material. In order to reduce splashing, reduce heat input and expand the application range of gas metal arc welding, a CMT cold metal transition technology is developed and researched, the technology optimizes the relation between the material adding process and wire feeding, a control system receives a welding wire short circuit signal for feedback and controls the contact between a welding wire and a base body to form a cyclic reciprocating material adding process, and the technology can effectively reduce the deformation of a cladding layer in the solidification and shrinkage process. The CMT electric arc additive repair technology is based on the CMT electric arc additive manufacturing technology, analyzes the damaged part of the part, constructs a model, and applies the model to repair and remanufacture of alloy parts.
The brass alloy has good corrosion resistance and high strength and hardness, and is widely applied to manufacturing of parts such as ship propellers and the like. The nickel-aluminum bronze alloy has good metallurgical compatibility with the brass alloy, has more excellent corrosion resistance and high strength, can obtain a cladding layer with high bonding strength when being applied to the remanufacturing of the brass alloy, and can realize the improvement of the surface hardness and the corrosion resistance of the matrix brass alloy.
In the practical application process of the ship, due to friction and abrasion and long-time seawater corrosion, the service requirements of some copper alloy parts cannot be met due to size loss and reduction of surface performance, the normal operation of the ship can only be met by replacing spare parts, meanwhile, the treatment mode of scrapping the parts cannot reasonably cause huge waste of resources, the utilization rate of materials is reduced, and if the parts are not treated properly, air pollution is caused, and the living environment is influenced. It is therefore desirable to develop a method of remanufacturing a repaired damaged part of this type.
Disclosure of Invention
The invention aims to prolong the service life of copper alloy parts applied to ships and provides a method for repairing a damaged brass propeller alloy component of a ship by CMT arc additive manufacturing.
The technical means adopted by the invention are as follows:
a method for repairing a damaged propeller brass C35300 alloy component for a ship through CMT arc additive manufacturing comprises the following steps:
s1: detecting a damaged area of a brass C35300 alloy component of the propeller to be repaired, determining the shape and the size of the damaged area of the component, planning an arc additive manufacturing repair path and process parameters, determining the size of a weld bead according to the planned repair path and the process parameters, and calculating the number of the weld beads required by additive repair;
s2: preprocessing the area to be repaired of the component;
s3: and (3) taking a copper alloy welding wire as a cladding material, taking a mixed gas of argon and helium as a protective gas, welding by a cold metal transition technology, and performing additive manufacturing and repairing according to a planned path to finish the arc additive manufacturing and repairing of the damaged propeller brass C35300 alloy component for the ship.
Further, in the step S3, the copper alloy welding wire is SG-CuAl8Ni6 copper alloy welding wire.
Further, the diameter of the copper alloy welding wire is 1.2 mm.
Further, in the step S3, the volume ratios of the argon gas and the helium gas in the mixed gas are respectively 70% of the helium gas and 30% of the argon gas, and the mixed gas is continuously conveyed to the additive material region through the nozzle of the welding gun.
Further, in the step S3, the power source used in the cold metal transition technology welding process is a fornices TPS4000CMT Advanced welding power source, the current range in the additive manufacturing repair process is 170-223A, the voltage range is 15.8-20.3V, the wire feed speed range is 7.5-9 m/min, the welding gun traveling speed range is 5-7 mm/sec, and the protective gas flow rate is 15-20 l.min-1And the wire feeding speed and the voltage and current parameters are in linkage control. The control and wire feeding are mutually linked in the cold metal transition technology welding process, and the system receives in the material adding processAnd the welding wire short circuit signal is fed back to the wire feeding system, and the welding wire is drawn back by the welding gun wire drawing system, so that molten drops are separated from the welding wire, and the purposes of reducing heat input in the material increase process and reducing splashing are achieved.
Further, in the step S2, the preprocessing means is: and (3) polishing the damaged part of the propeller brass C35300 alloy component, carrying out ultrasonic cleaning by using acetone after the component is polished to be flat, and removing a corrosion area on the surface of the damaged area of the propeller brass C35300 alloy component in the using process and an oxide layer and oil stains generated in the damaged area to expose the metallic luster.
Further, in the step S3, in the additive manufacturing repair process, when several layers of welding passes are performed before additive deposition, the metal brush is used to remove an oxide layer and spatters on the surface of the welding passes, and then deposition is performed directly until all layers are completed, thereby completing the arc additive manufacturing repair of the damaged propeller brass C35300 alloy component for the ship.
Compared with the prior art, the invention has the following advantages:
the method for repairing the damaged brass propeller component of the ship by CMT arc additive manufacturing can realize the reutilization of damaged copper alloy parts of the ship, improve the utilization rate of materials and reduce the production cost; in the remanufacturing process, the connection between the material adding process and the wire feeding process is optimized, the control system receives the welding wire short circuit signal for feedback, the contact between the welding wire and the base body is controlled, and the material adding process which is in reciprocating circulation is formed. When alloy parts are remanufactured, corresponding process parameters can be determined according to single-layer welding bead welding parameters and welding bead sizes under the technology so as to obtain a repairing layer with high dimensional precision.
Based on the reason, the method can be widely popularized in the fields of copper alloy additive remanufacturing and the like.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The embodiments of the present invention are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
A method for repairing a damaged propeller brass C35300 alloy component for a ship through CMT arc additive manufacturing comprises the following steps:
s1: detecting a damaged area of a brass C35300 alloy component of the propeller to be repaired, determining the shape and the size of the damaged area of the component, planning an arc additive manufacturing repair path and process parameters, determining the size of a weld bead according to the planned repair path and the process parameters, and calculating the number of the weld beads required by additive repair;
s2: preprocessing the area to be repaired of the component;
s3: and (3) taking a copper alloy welding wire as a cladding material, taking a mixed gas of argon and helium as a protective gas, welding by a cold metal transition technology, and performing additive manufacturing and repairing according to a planned path to finish the arc additive manufacturing and repairing of the damaged propeller brass C35300 alloy component for the ship.
Further, in the step S3, the copper alloy welding wire is SG-CuAl8Ni6 copper alloy welding wire.
Further, the diameter of the copper alloy welding wire is 1.2 mm.
Further, in the step S3, the proportions of the argon gas and the helium gas in the mixed gas are respectively 70% by volume of the helium gas and 30% by volume of the argon gas, and the mixed gas is continuously conveyed to the additive material region through the nozzle of the welding gun.
Further, in the step S3, the power source used in the cold metal transition technology welding process is a fornices TPS4000CMT Advanced welding power source, the current range in the additive manufacturing repair process is 170-223A, the voltage range is 15.8-20.3V, the wire feed speed range is 7.5-9 m/min, the welding gun traveling speed range is 5-7 mm/sec, and the protective gas flow rate is 15-20 l.min-1And the wire feeding speed and the voltage and current parameters are in linkage control. Control and wire feeding are mutually linked in the cold metal transition technology welding process, a welding wire short-circuit signal is received by the system in the material increase process and then fed back to the wire feeding system, the welding wire is drawn back by the welding gun wire drawing system, molten drops are separated from the welding wire, and the purposes of reducing heat input in the material increase process and reducing splashing are achieved.
Further, in the step S2, the preprocessing means is: and (3) polishing the damaged part of the propeller brass C35300 alloy component, carrying out ultrasonic cleaning by using acetone after the component is polished to be flat, and removing a corrosion area on the surface of the damaged area of the propeller brass C35300 alloy component in the using process and an oxide layer and oil stains generated in the damaged area to expose the metallic luster.
Further, in the step S3, in the additive manufacturing repair process, when several layers of welding passes are performed before additive deposition, the metal brush is used to remove an oxide layer and spatters on the surface of the welding passes, and then deposition is performed directly until all layers are completed, thereby completing the arc additive manufacturing repair of the damaged propeller brass C35300 alloy component for the ship.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A method of repairing a damaged propeller brass C35300 alloy component for a marine vessel, comprising the steps of:
s1: detecting a damaged area of a brass C35300 alloy component of the propeller to be repaired, determining the shape and the size of the damaged area of the component, planning an arc additive manufacturing repair path and process parameters, determining the size of a weld bead according to the planned repair path and the process parameters, and calculating the number of the weld beads required by additive repair;
s2: preprocessing the area to be repaired of the component;
s3: and (3) taking a copper alloy welding wire as a cladding material, taking a mixed gas of argon and helium as a protective gas, welding by a cold metal transition technology, and performing additive manufacturing and repairing according to a planned path to finish the arc additive manufacturing and repairing of the damaged propeller brass C35300 alloy component for the ship.
2. The method for repairing a damaged propeller brass C35300 alloy member for marine vessels as claimed in claim 1, wherein in the step S3, the copper alloy welding wire is SG-CuAl8Ni6 copper alloy welding wire.
3. The method for repairing a damaged propeller brass C35300 alloy structural member for a marine vessel as claimed in claim 2, wherein the diameter of the copper alloy welding wire is 1.2 mm.
4. The method for repairing a damaged propeller brass C35300 alloy structural member for a marine vessel according to claim 1, wherein in the step S3, the volume ratio of the argon gas and the helium gas in the mixed gas is 70% of the helium gas and 30% of the argon gas, respectively, and the mixed gas is continuously fed to the additive region through a welding gun nozzle.
5. The method as claimed in claim 1, wherein in step S3, the power source used in the cold metal transfer welding process is a fornices TPS4000CMT Advanced welding power source, the current range in the additive manufacturing repair process is 170-223A, the voltage range is 15.8-20.3V, the wire feed speed range is 7.5-9 m/min, the welding gun traveling speed range is 5-7 mm/S, and the shielding gas flow rate is 15-20L-min-1And the wire feeding speed and the voltage and current parameters are in linkage control.
6. The method for repairing a damaged propeller brass C35300 alloy structural member for a marine vessel as claimed in claim 1, wherein in the step S2, the pretreatment means is: and (3) polishing the damaged part of the propeller brass C35300 alloy component, carrying out ultrasonic cleaning by using acetone after the component is polished to be flat, and removing a corrosion area on the surface of the damaged area of the propeller brass C35300 alloy component in the using process and an oxide layer and oil stains generated in the damaged area to expose the metallic luster.
7. The method for repairing a damaged brass C35300 alloy component for a marine vessel as claimed in claim 1, wherein in step S3, in the additive manufacturing and repairing process, during 3-7 layers of welding passes before additive deposition, a metal brush is used to remove an oxide layer and splashes on the surface of the welding passes, and then deposition is directly performed until all layers are completed, thereby completing the arc additive manufacturing and repairing of the damaged brass C35300 alloy component for the marine vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110470249.9A CN113070551A (en) | 2021-04-28 | 2021-04-28 | Method for repairing damaged propeller brass C35300 alloy component for ship |
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| CN202110470249.9A CN113070551A (en) | 2021-04-28 | 2021-04-28 | Method for repairing damaged propeller brass C35300 alloy component for ship |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718247A (en) * | 2021-09-09 | 2021-11-30 | 中国人民解放军陆军装甲兵学院 | Plasma cladding repair method for copper alloy damaged part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718247A (en) * | 2021-09-09 | 2021-11-30 | 中国人民解放军陆军装甲兵学院 | Plasma cladding repair method for copper alloy damaged part |
| CN113718247B (en) * | 2021-09-09 | 2024-02-02 | 中国人民解放军陆军装甲兵学院 | Plasma cladding repair method for copper alloy damaged part |
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