CN107723699A - A kind of method for repairing heat-resisting alloy - Google Patents
A kind of method for repairing heat-resisting alloy Download PDFInfo
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- CN107723699A CN107723699A CN201710829357.4A CN201710829357A CN107723699A CN 107723699 A CN107723699 A CN 107723699A CN 201710829357 A CN201710829357 A CN 201710829357A CN 107723699 A CN107723699 A CN 107723699A
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- shot
- cold
- peening
- cold spraying
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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
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Heat-resisting alloy is poor with higher intensity, its weldability, and the invention provides a kind of method for repairing heat-resisting alloy, essence is the repairing quality that effect raising cold spraying reparation high strength thermal resistant alloy material is tamped by the shot-peening of high intensity blasting technology；Heat-resisting alloy reparation, which is repaired, using the present invention can avoid restoring area or neighbouring cracking phenomena, restoring area from having compressive stress state, be advantageous to improve antiscour, corrosion and the oxidation susceptibility of restoring area.
Description
Technical field
The invention belongs to field of surface engineering technique, and in particular to a kind of method for repairing heat-resisting alloy.
Background technology
Cobalt-based, Refractoloy material have the performance such as higher elevated temperature strength, high temperature resistant, resistance to oxidation, corrosion-resistant,
Had a wide range of applications in industrial circle.Such as applied to gas turbine hot passage parts, turbine blade, steam valve sealing
Deng.In the process of running, washed away by solid particle or high temperature fluid, corrosion, oxidation equivalent damage, endanger equipment so as to produce
The defects of safe operation.Because the solderability of cobalt-based, Ni-based high-strength alloy is poor, it is difficult to obtain height by traditional welding method
The repairing effect of quality.With the development of science and technology, a large amount of new recovery techniques, such as laser or electron beam high energy are emerged
The Solid-phase welding technologies such as beam welding technique, self propagating high temperature welding or diffusion brazing welding progressively start to be applied to heat-resisting alloy
Reparation.Although these advanced Welding Repair Technologies are applied in the maintenance of high-temperature alloy material, Solid-phase welding
Technology has the characteristics of technique is more complicated, less efficient；And high energy beam fusion welding is also easy in restoring area generation stomata, split
The defects of line；In addition the above method repair after region be in tensile stress state, be unfavorable for improve equipment antiscour, corrode and
The performances such as oxidation.After improving various technologies reparation heat-resisting alloy materials at present, restoring area existing defects and tension region
This present situation, a kind of new heat-resisting alloy recovery technique need to be developed.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art and deficiency, provide one kind by cold spray technique and repair
Multiple heat-resisting alloy new method, of poor quality and restoring area produces tension after solving the problems, such as prior art reparation.
To reach above-mentioned purpose, the technical solution adopted in the present invention is：
A kind of method for repairing heat-resisting alloy, cold spraying is improved by high intensity shot-peening and repairs high strength thermal resistant alloy material
Repairing quality；Specifically comprise the following steps：
Step 1：To restoring area carry out oil removal treatment, and by way of mechanical polishing to area to be repaired at
Reason, obtains smooth repair surface, and carries out blasting treatment, makes surface roughness RaReach 10~300 microns；
Step 2：It is 15~45 microns of material as cold spraying reparation to use and granularity identical with workpiece material to be repaired
Material；Granularity is used to be used as the shot-peening of 100~3000 microns of stainless steel, ceramics, glass material synchronous to cold spraying coating
The material of densification；
Step 3：The shot-blasting gun of shot-peening and the Spray gun for cold spray with Laval configuration are mounted side by side, and make its holding
The process of first cold spraying repair materials shot-peening again, setting angle is adjusted, makes Spray gun for cold spray and shot-blasting gun in workpiece table to be sprayed
The spot in face about 0~100mm, and can synchronizing moving apart；
Cold spraying repair materials use solid precipitation mode, and its coating sprayed has compressive stress state；With nitrogen, argon
The main gas and powder feeding gas of one or both of gas or helium as cold spraying, main atmospheric pressure are 2~6MPa, powder feeding atmospheric pressure
For 2~6MPa, and main gas is heated to 500~1000 DEG C by heater；
While Spray gun for cold spray cold spraying repair materials start, start shot-blasting gun, entered using nitrogen or inert gas
Row shot-peening, shot-peening 2~6MPa of gas pressure, 0~10kg of flow, gas temperature is normal temperature.
The thickness of cold spraying repair materials layer should be higher than that former 0~3mm of workpiece surface, and combine machining or lapping mode
Recover to basis lines.
By the above method, can be achieved to repair heat-resisting alloy based on cold spray technique.In cold spray process and shot-blast process
In the presence of, densification can be obtained, the repairing quality of compressive stress state, improves the performances such as antiscour, corrosion and the oxidation of equipment.
Compared to the prior art, the invention has the advantages that：
1) restoring area is formed by powder body material accumulation, avoids restoring area or neighbouring cracking phenomena.
2) the solid precipitation mode that cold spraying uses, its coating sprayed have compressive stress state.
3) blasting technology and cold spray technique are combined, shot-peening can be carried out to each layer of sedimentary, after repairing cold spraying
Region is fine and close, and realizes and compressive stress state is also inside restoring area, be advantageous to improve the antiscour of restoring area, corrosion and
Oxidation susceptibility.
Brief description of the drawings
Fig. 1 is repair process schematic diagram of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Embodiment 1：Repaired for the deep surface abrasion defects of the 1.5mm of 718 nickel-base alloy parts surfaces.Using
The powder of Inconel 718 is as material for repairing, using 0.8mm stainless shot as shot-peening material.It is first right before reparation
718 Superalloy Substrates progress mechanical grinding is smooth, and is cleared up using acetone, is first used before repairing at emergy progress sandblasting
Reason, obtain rough surface structure.The dusty sprays of Inconel 718 are after drying, as shown in figure 1, Spray gun for cold spray progress is cold
In spraying process, using 5MPa, the nitrogen that 800 DEG C of temperature as main gas, 5.5MPa nitrogen as powder feeding gas, repaired in spraying
While, bead is carried out using 5.5MPa nitrogen.Cold spraying and shot-peening process are carried out continuously.Until spraying restoring area
Thickness stops spraying reparation and shot peening strengthening after exceeding former workpiece surface about 0.5mm.Then by the way of mechanical reconditioning, will repair
Recover basis lines in region.Detected through section metallographic, restoring area is fine and close, and flawless defect etc. produces.
Embodiment 2：Cellular damage for stellite parts surface is cheated, and is repaired using cold spraying.Adopt
By the use of Stellite-6 powder as material for repairing, using 0.8mm stainless shot as shot-peening material.It is first right before reparation
Stellite matrix progress mechanical grinding is smooth, and is cleared up using acetone, and emergy progress blasting treatment is first used before repairing,
Obtain rough surface structure.Stellite-6 dusty sprays are after drying, as shown in figure 1, Spray gun for cold spray carries out cold spraying,
Using 2MPa, the helium that 900 DEG C of temperature as main gas, 2.2MPa helium as powder feeding gas, spray repair while, use
5.5MPa nitrogen carries out bead.Cold spraying and shot-peening process are carried out continuously, and exceed original greatly until spraying restoring area is thick
Stop spraying reparation and shot peening strengthening after workpiece surface about 0.5mm.Then, can be extensive by restoring area by the way of mechanical reconditioning
Multiple basis lines.Detected through section metallographic, restoring area is fine and close, and flawless defect etc. produces.
Claims (2)
- A kind of 1. method for repairing heat-resisting alloy, it is characterised in that：It is resistance to that cold spraying reparation high intensity is improved by high intensity shot-peening The repairing quality of thermalloy material；Specifically comprise the following steps：Step 1：Oil removal treatment is carried out to restoring area, and area to be repaired handled by way of mechanical polishing, is obtained Repair surface smoothly is obtained, and carries out blasting treatment, makes surface roughness RaReach 10~300 microns；Step 2：It is 15~45 microns of material as cold spraying repair materials to use and granularity identical with workpiece material to be repaired； Granularity is used to be used as the shot-peening of 100~3000 microns of stainless steel, ceramics, glass material synchronous to cold spraying repair materials layer The material of densification；Step 3：The shot-blasting gun of shot-peening and the Spray gun for cold spray with Laval configuration are mounted side by side, and it is kept first cold The process for spraying repair materials shot-peening again, setting angle is adjusted, makes Spray gun for cold spray and shot-blasting gun in workpiece surface to be sprayed Spot about 0~100mm, and can synchronizing moving apart；Cold spraying repair materials use solid precipitation mode, and its coating sprayed has compressive stress state；With nitrogen, argon gas or Main gas and powder feeding gas of one or both of the helium as cold spraying, main atmospheric pressure are 2~6MPa, and powder feeding atmospheric pressure is 2 ~6MPa, and main gas is heated to 500~1000 DEG C by heater；While Spray gun for cold spray cold spraying repair materials start, start shot-blasting gun, sprayed using nitrogen or inert gas Ball, shot-peening 2~6MPa of gas pressure, 0~10kg of flow, gas temperature is normal temperature.
- 2. the method according to claim 1 for repairing heat-resisting alloy, it is characterised in that：The thickness of cold spraying repair materials layer Former 0~3mm of workpiece surface is should be higher than that, and combination machining or lapping mode recover to basis lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710829357.4A CN107723699B (en) | 2017-09-14 | 2017-09-14 | Method for repairing heat-resistant alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710829357.4A CN107723699B (en) | 2017-09-14 | 2017-09-14 | Method for repairing heat-resistant alloy |
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| CN107723699A true CN107723699A (en) | 2018-02-23 |
| CN107723699B CN107723699B (en) | 2019-12-31 |
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| CN201710829357.4A Active CN107723699B (en) | 2017-09-14 | 2017-09-14 | Method for repairing heat-resistant alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109985744A (en) * | 2019-04-23 | 2019-07-09 | 中国航空发动机研究院 | Cold spraying repair system and method |
| CN110369243A (en) * | 2019-08-06 | 2019-10-25 | 广东省新材料研究所 | The restorative procedure and reparation of reactor for polycrystalline silicon chassis surface, its holiday |
| CN110640635A (en) * | 2019-09-24 | 2020-01-03 | 广州大学 | Coating-writing type metal workpiece surface reinforced grinding processing method and equipment |
| CN110643990A (en) * | 2019-09-09 | 2020-01-03 | 中国人民解放军第五七一九工厂 | Method for adjusting intermediate casing unit body to inhibit vibration of aero-engine |
| CN110666442A (en) * | 2019-09-09 | 2020-01-10 | 中国人民解放军第五七一九工厂 | Method for repairing size of VII-level disc spigot of compressor rotor |
| CN111687587A (en) * | 2020-05-31 | 2020-09-22 | 西安交通大学 | Blunt circle repairing method for sharp damage of blade pits of blade disc of engine |
| CN111793795A (en) * | 2020-06-24 | 2020-10-20 | 浙江工业大学 | Preparation method of cobalt-based anti-cavitation coating based on work hardening plastic deposition |
| CN114107857A (en) * | 2021-11-30 | 2022-03-01 | 西北有色金属研究院 | High-temperature high-pressure shot peening strengthening method for improving ablation resistance of surface of refractory metal electrode |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4116012A1 (en) * | 2021-07-07 | 2023-01-11 | Industria de Turbo Propulsores S.A. | Material deposition method for repairing aeronautical components |
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| CN106939421A (en) * | 2017-02-16 | 2017-07-11 | 中国船舶重工集团公司第七二五研究所 | A kind of low pressure cold spray repairing method of Al-alloy casing |
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| US20100059572A1 (en) * | 2008-09-09 | 2010-03-11 | General Electric Company | Weld repair process and article repaired thereby |
| CN103194753A (en) * | 2012-01-05 | 2013-07-10 | 通用电气公司 | Process for coating a turbine rotor and articles thereof |
| CN105463442A (en) * | 2015-11-20 | 2016-04-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for repairing part size through supersonic NiCrAlY coating spraying |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109985744A (en) * | 2019-04-23 | 2019-07-09 | 中国航空发动机研究院 | Cold spraying repair system and method |
| CN110369243A (en) * | 2019-08-06 | 2019-10-25 | 广东省新材料研究所 | The restorative procedure and reparation of reactor for polycrystalline silicon chassis surface, its holiday |
| CN110643990A (en) * | 2019-09-09 | 2020-01-03 | 中国人民解放军第五七一九工厂 | Method for adjusting intermediate casing unit body to inhibit vibration of aero-engine |
| CN110666442A (en) * | 2019-09-09 | 2020-01-10 | 中国人民解放军第五七一九工厂 | Method for repairing size of VII-level disc spigot of compressor rotor |
| CN110640635A (en) * | 2019-09-24 | 2020-01-03 | 广州大学 | Coating-writing type metal workpiece surface reinforced grinding processing method and equipment |
| CN110640635B (en) * | 2019-09-24 | 2020-12-08 | 广州大学 | Coating-writing type metal workpiece surface reinforced grinding processing method and equipment |
| CN111687587A (en) * | 2020-05-31 | 2020-09-22 | 西安交通大学 | Blunt circle repairing method for sharp damage of blade pits of blade disc of engine |
| CN111687587B (en) * | 2020-05-31 | 2021-08-13 | 西安交通大学 | Blunt circle repairing method for sharp damage of blade pits of blade disc of engine |
| CN111793795A (en) * | 2020-06-24 | 2020-10-20 | 浙江工业大学 | Preparation method of cobalt-based anti-cavitation coating based on work hardening plastic deposition |
| CN114107857A (en) * | 2021-11-30 | 2022-03-01 | 西北有色金属研究院 | High-temperature high-pressure shot peening strengthening method for improving ablation resistance of surface of refractory metal electrode |
| CN114107857B (en) * | 2021-11-30 | 2022-04-26 | 西北有色金属研究院 | High-temperature high-pressure shot peening strengthening method for improving ablation resistance of surface of refractory metal electrode |
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| CN107723699B (en) | 2019-12-31 |
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