CN111041472A - Laser replication process method for mortise of hub of ground gas turbine - Google Patents
Laser replication process method for mortise of hub of ground gas turbine Download PDFInfo
- Publication number
- CN111041472A CN111041472A CN201911195134.2A CN201911195134A CN111041472A CN 111041472 A CN111041472 A CN 111041472A CN 201911195134 A CN201911195134 A CN 201911195134A CN 111041472 A CN111041472 A CN 111041472A
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- China
- Prior art keywords
- mortise
- cladding
- gas turbine
- laser
- tongue
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- C—CHEMISTRY; METALLURGY
- C23—COATING 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
- C23C—COATING 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Abstract
The invention relates to the technical field of wheel hub mortise replication, and discloses a laser replication process method for a wheel hub mortise of a ground gas turbine, which comprises the following steps: 1) preprocessing a damaged part; 2) detecting damage; 3) obtaining cladding powder; 4) laser cladding; 5) cladding recording; 6) performing complex shape; 7) and detecting the defects. The laser replication process method for the wheel hub tongue-and-groove of the ground gas turbine breaks through the simple spraying and repairing of the traditional gas turbine tongue-and-groove and a gas turbine blade, provides a laser repair method for a rebound filling replication layer with high plasticity and high temperature resistance, solves the difficulty that a tenon tooth and a tongue-and-groove are difficult to combine precisely for cladding a metal plastic rebound filling layer of each step of the tongue-and-groove, obviously shortens the repair period, is safer and more reliable than a spraying method, the repaired plastic replication layer completely meets the use requirement of the gas turbine tongue-and-groove, and the laser cladding unique replication layer has a small heat affected zone for the tongue-and-groove.
Description
Technical Field
The invention relates to the technical field of wheel hub mortise replication, in particular to a laser replication process method for a wheel hub mortise of a ground gas turbine.
Background
Laser cladding is that a metallurgical bonding layer is formed between the surface of a base material and a cladding material through rapid melting of high-energy laser beams, and the advanced remanufacturing technology of the material performance of the high-performance alloy cladding layer and the performance of the base material can not be influenced, so that the high-performance alloy cladding layer can flexibly adapt to the repair of more working conditions, for example, the processing of a narrow space and the processing of an easily deformed workpiece in a small heat affected zone can be realized through the transparent medium, and the laser cladding technology solves the contradictions that the traditional repair methods such as surfacing welding, argon arc welding, spraying, plating and the like cannot solve the problems of material selection limitation, thermal stress, thermal deformation in the process, large material grains and difficult guarantee of the bonding strength of a base material, and provides a new way for remanufacturing products and repairing failed parts.
At present, the laser cladding repair technology has been widely popularized and applied in the remanufacturing field due to the characteristics of high speed, high precision, long service life of repair parts, environmental friendliness, energy conservation and the like, the blade and the mortise are abraded mutually due to long-term use of the mortise of the hub of the ground gas turbine, the gap is multiplied and the gap value is 0.02-0.5 mm, at present, due to the structural characteristics of the mortise, the blade spraying is mainly used in the conventional repair scheme, but the abrasion problem between the blade and the mortise can not be effectively solved for a long time due to the process principle of spraying, and therefore the laser cladding process method for the mortise of the hub of the ground gas turbine is provided for solving the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a laser replication process method for a mortise of a hub of a ground gas turbine, which has the advantages of high plasticity, high temperature resistance, long service life and the like, and solves the problems that the conventional repair scheme mainly sprays blades, but the abrasion between the blades and the mortise cannot be solved for a long time due to the process principle of spraying.
(II) technical scheme
In order to achieve the purposes of high plasticity, high temperature resistance and long service life, the invention provides the following technical scheme: a laser replication process method for a mortise of a hub of a ground gas turbine comprises the following steps:
1) the method comprises the following steps of (1) preprocessing a damaged part, carrying out omnibearing cleaning on a mortise of a hub of a ground gas turbine, specifically carrying out rust removal and oil removal cleaning on the surface of the mortise, avoiding the influence of residual dust and debris on the surface on subsequent processes, and carrying out laser cladding after confirming no defects such as cracks and the like after the cleaning is finished;
2) performing damage detection, namely firstly performing various detection and debugging operations before laser cladding of the mortise of the ground gas turbine hub, wherein the contents comprise the size and hardness of each tenon tooth and nondestructive flaw detection, manufacturing a standard measuring bar, measuring the interval of each level of the mortise, calculating the abrasion loss of the tenon tooth, and determining a final maintenance scheme according to the abrasion loss;
3) obtaining cladding powder, wherein the cladding material comprises 0.3% of C, 18% of Cr, 26% of Cu, Mo: 4%, Fe: 1.1%, B: 0.5%, Si: 0.4 percent and the balance of Ni, and is reserved after the preparation;
4) laser cladding, namely fixing the mortise of the gas turbine hub on a machine tool, providing laser cladding for the mortise of the gas turbine hub on the ground by adopting a laser welding machine, providing nickel alloy material compound functional layers for three steps of the wear offset mortise, wherein each compound functional layer is 4 +/-0.1 mm, and the height is equal to the mortise wear depth + 0.05-0.1 mm, so that each step of the mortise recovers the size and forms a compound layer with good plasticity, and the plastic rebound of the blade fills gaps when being reassembled, namely, each step of the blade is combined with each step of the mortise more compactly, and the contact area is maximized;
5) cladding recording, namely performing dimension detection recording on each mortise step after laser cladding;
6) reshaping, namely removing an oxidized cortex layer of the tongue-and-groove reshaping layer and then performing appropriate repairing and grinding to maximize the contact area of each step of the tongue-and-groove and each step of the blade;
7) and (4) defect detection, wherein a PT (potential transformer) nondestructive inspection method is adopted to ensure that cladding defects do not exist in the cladding layer.
Preferably, a 5000w carbon dioxide laser is selected for laser cladding.
Preferably, the cladding technological parameters of the cladding layer are power: 3000 ~ 3200W, the facula diameter: 4-4.5 mm, scanning speed: 300-600 mm/min, powder placing thickness: 0.1-0.8 mm.
(III) advantageous effects
Compared with the prior art, the invention provides a laser replication process method for a mortise of a hub of a ground gas turbine, which has the following beneficial effects:
the laser replication process method of the wheel hub tongue-and-groove of the ground gas turbine breaks through the simple spraying repair of the traditional gas turbine tongue-and-groove and a gas turbine blade, provides a laser replication method of a rebound filling replication layer with high plasticity and high temperature resistance, solves the difficulty that the tenon tooth and the tongue-and-groove are difficult to be precisely combined for cladding the metal plastic rebound filling layer of each step of the tongue-and-groove, obviously shortens the repair period, is safer and more reliable than a spraying method, the repaired plastic replication layer completely meets the use requirement of the gas turbine tongue-and-groove, the heat affected zone of the laser cladding unique replication layer to the tongue-and-groove is small, ensures that the tenon tooth is not deformed after the replication, and also provides possibility for the repeated maintenance of the tongue-and-groove, the provided laser cladding material has the characteristics of high temperature resistance and high plasticity, not only meets the requirement of the high-temperature operation of the gas turbine, but also meets the requirement of the precise combination of the tenon tooth and the, meanwhile, the combination of each step of the blade and each step of the mortise is more compact, and the contact area is maximized, so that the service life of the mortise is prolonged, and the purposes of high plasticity, high temperature resistance and long service life are achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
A laser replication process method for a mortise of a hub of a ground gas turbine comprises the following steps:
1) the method comprises the following steps of (1) preprocessing a damaged part, carrying out omnibearing cleaning on a mortise of a hub of a ground gas turbine, specifically carrying out rust removal and oil removal cleaning on the surface of the mortise, avoiding the influence of residual dust and debris on the surface on subsequent processes, and carrying out laser cladding after confirming no defects such as cracks and the like after the cleaning is finished;
2) performing damage detection, namely firstly performing various detection and debugging operations before laser cladding of the mortise of the ground gas turbine hub, wherein the contents comprise the size and hardness of each tenon tooth and nondestructive flaw detection, manufacturing a standard measuring bar, measuring the interval of each level of the mortise, calculating the abrasion loss of the tenon tooth, and determining a final maintenance scheme according to the abrasion loss;
3) obtaining cladding powder, wherein the cladding material comprises 0.3% of C, 18% of Cr, 26% of Cu, Mo: 4%, Fe: 1.1%, B: 0.5%, Si: 0.4 percent and the balance of Ni, and is reserved after the preparation;
4) laser cladding, fix the gas turbine wheel hub tongue-and-groove on the lathe, adopt laser welder to provide laser cladding to the gas turbine wheel hub tongue-and-groove on ground, laser cladding chooses 5000w carbon dioxide laser for use, provide nickel alloy material compound type functional layer for wearing and tearing skew tongue-and-groove tertiary step, every compound type functional layer 4 + -0.1 mm, highly be tongue-and-groove degree of wear + 0.05~0.1mm, form when making each step of tongue-and-groove resume size has good plasticity compound type layer, its plasticity is kick-backed when the blade repacks and will the gap-filling, each step of blade combines more closely knit and area of contact with each step of tongue-and-groove promptly will obtain the maximize, the cladding technological parameter of compound type layer is power: 3000 ~ 3200W, the facula diameter: 4-4.5 mm, scanning speed: 300-600 mm/min, powder placing thickness: 0.1-0.8 mm;
5) cladding recording, namely performing dimension detection recording on each mortise step after laser cladding;
6) reshaping, namely removing an oxidized cortex layer of the tongue-and-groove reshaping layer and then performing appropriate repairing and grinding to maximize the contact area of each step of the tongue-and-groove and each step of the blade;
7) and (4) defect detection, wherein a PT (potential transformer) nondestructive inspection method is adopted to ensure that cladding defects do not exist in the cladding layer.
The invention has the beneficial effects that: the laser repairing method of the rebound filling composite layer with high plasticity and high temperature resistance is provided by breaking the traditional simple spraying repair of the gas turbine mortise and the gas turbine blade, the metal plastic rebound filling layer cladded on each step of the mortise solves the difficulty that the tenon tooth and the mortise are difficult to be precisely combined, the repairing period is obviously shortened, the method is safer and more reliable than a spraying method, the repaired plastic composite layer completely meets the use requirement of the gas turbine mortise, the heat affected zone of the laser cladding unique composite layer on the mortise is small, the tenon tooth is ensured not to be deformed after the composite is formed, the possibility is provided for the repeated maintenance of the mortise, the provided laser cladding material has the characteristics of high temperature resistance and high plasticity, the requirement of the high-temperature operation of the gas turbine is met, the requirement of the precise combination of the tenon tooth and the mortise is met, and simultaneously, the combination of each step of the blade and each step of the mortise is more compact and the contact area is maximized, thereby realize extension tongue-and-groove life's effect, reached high plasticity, high temperature resistant characteristic and long service life's purpose, solved the repair scheme in the past and mostly used the blade spraying as the main, but the technological principle of spraying itself leads to the blade can not solve the problem of the wearing and tearing between blade and tongue-and-groove for a long time and effectual solution.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A laser replication process method for a mortise of a hub of a ground gas turbine is characterized by comprising the following steps:
1) the method comprises the following steps of (1) preprocessing a damaged part, carrying out omnibearing cleaning on a mortise of a hub of a ground gas turbine, specifically carrying out rust removal and oil removal cleaning on the surface of the mortise, avoiding the influence of residual dust and debris on the surface on subsequent processes, and carrying out laser cladding after confirming no defects such as cracks and the like after the cleaning is finished;
2) performing damage detection, namely firstly performing various detection and debugging operations before laser cladding of the mortise of the ground gas turbine hub, wherein the contents comprise the size and hardness of each tenon tooth and nondestructive flaw detection, manufacturing a standard measuring bar, measuring the interval of each level of the mortise, calculating the abrasion loss of the tenon tooth, and determining a final maintenance scheme according to the abrasion loss;
3) obtaining cladding powder, wherein the cladding material comprises 0.3% of C, 18% of Cr, 26% of Cu, Mo: 4%, Fe: 1.1%, B: 0.5%, Si: 0.4 percent and the balance of Ni, and is reserved after the preparation;
4) laser cladding, namely fixing the mortise of the gas turbine hub on a machine tool, providing laser cladding for the mortise of the gas turbine hub on the ground by adopting a laser welding machine, providing nickel alloy material compound functional layers for three steps of the wear offset mortise, wherein each compound functional layer is 4 +/-0.1 mm, and the height is equal to the mortise wear depth + 0.05-0.1 mm, so that each step of the mortise recovers the size and forms a compound layer with good plasticity, and the plastic rebound of the blade fills gaps when being reassembled, namely, each step of the blade is combined with each step of the mortise more compactly, and the contact area is maximized;
5) cladding recording, namely performing dimension detection recording on each mortise step after laser cladding;
6) reshaping, namely removing an oxidized cortex layer of the tongue-and-groove reshaping layer and then performing appropriate repairing and grinding to maximize the contact area of each step of the tongue-and-groove and each step of the blade;
7) and (4) defect detection, wherein a PT (potential transformer) nondestructive inspection method is adopted to ensure that cladding defects do not exist in the cladding layer.
2. The process of claim 1, wherein the laser cladding uses a 5000w carbon dioxide laser.
3. The laser replication process method for the wheel hub mortises of the ground gas turbine as claimed in claim 1, wherein the cladding process parameters of the replication layer are power: 3000 ~ 3200W, the facula diameter: 4-4.5 mm, scanning speed: 300-600 mm/min, powder placing thickness: 0.1-0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911195134.2A CN111041472A (en) | 2019-11-28 | 2019-11-28 | Laser replication process method for mortise of hub of ground gas turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911195134.2A CN111041472A (en) | 2019-11-28 | 2019-11-28 | Laser replication process method for mortise of hub of ground gas turbine |
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| CN111041472A true CN111041472A (en) | 2020-04-21 |
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| CN201911195134.2A Pending CN111041472A (en) | 2019-11-28 | 2019-11-28 | Laser replication process method for mortise of hub of ground gas turbine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112276086A (en) * | 2020-11-10 | 2021-01-29 | 西安交通大学 | Additive/equal-material preparation method for blade tenon |
| CN115612973A (en) * | 2022-11-02 | 2023-01-17 | 上海大陆天瑞激光表面工程有限公司 | Laser high-temperature flash forming method for surface oxide film of steel material |
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| CN106756252A (en) * | 2016-12-29 | 2017-05-31 | 沈阳大陆激光工程技术有限公司 | A kind of Co-based alloy powder repaired for heavy combustion engine wheel hub tenon tooth |
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- 2019-11-28 CN CN201911195134.2A patent/CN111041472A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104226976A (en) * | 2013-06-20 | 2014-12-24 | 沈阳大陆激光技术有限公司 | Laser repair nickel-based alloy powder for gas inlet housings of superchargers of internal combustion engines |
| CN106555182A (en) * | 2015-09-24 | 2017-04-05 | 沈阳大陆激光技术有限公司 | A kind of restorative procedure of combustion engine turbine rotor wheel hub tongue-and-groove |
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| CN112276086A (en) * | 2020-11-10 | 2021-01-29 | 西安交通大学 | Additive/equal-material preparation method for blade tenon |
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| CN115612973A (en) * | 2022-11-02 | 2023-01-17 | 上海大陆天瑞激光表面工程有限公司 | Laser high-temperature flash forming method for surface oxide film of steel material |
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Application publication date: 20200421 |