CN101633109A - Method for reproducing high-temperature fatigue damage component - Google Patents
Method for reproducing high-temperature fatigue damage component Download PDFInfo
- Publication number
- CN101633109A CN101633109A CN200910184305A CN200910184305A CN101633109A CN 101633109 A CN101633109 A CN 101633109A CN 200910184305 A CN200910184305 A CN 200910184305A CN 200910184305 A CN200910184305 A CN 200910184305A CN 101633109 A CN101633109 A CN 101633109A
- Authority
- CN
- China
- Prior art keywords
- temperature
- ion
- component
- fatigue damage
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
The invention discloses a method for reproducing a high-temperature fatigue damage component, carrying out a compound process of ion injection and laser attack on a production apparatus with small crackles (or damages). The ion injection can fill the small crackles, during the process of injecting, a large amount of solute atoms and vacancies can be guided in to form various dislocations and analyze metallic compounds or various alloy phases, thereby strengthening materials, improving the antifraying characteristic and high-temperature oxidation resistance, improving the fatigue resistance or controlling a modified layer to malleableize; the laser attack is carried out on the component, under the effect of high pressure of a laser shock wave, the metal surface generates microplastic deformation to form a high-amplitude residual pressure stress layer, thereby effectively improving the mechanical performance of metal materials, especially the fatigue life.
Description
Technical field
The present invention relates to the re-manufacturing technology field of fatigue at high temperature parts, refer in particular to the reproducing method of smelting iron and steel production equipment high-temperature damage parts, being particularly useful for the surface has the pelletizing of fine crack (or damage) to smelt the manufacturing again of producing the equipment key component.
Background technology
At present, along with the rapid growth of rapid development of economy and population, the shortage of water, soil, the energy and mineral resources will be more and more serious, presses for energy savings and environmental protection.This just means greatly develops recycling economy, and that quickens constructing economical society seems particularly important and urgent.Whether feasibility that product is made again and feasible degree are to develop the high vital part of the problem that manufacturing industry primarily faces, particularly added value of product (manpower, the energy etc.) can repair and not need and replace again.Whether the part remanent fatigue life enough keeps next life cycle, is to make the important technological problems that faces again.The principal mode of part failure has fracture, wearing and tearing, corrosion and distortion, wherein, wearing and tearing, corrosion and deformation ratio are directly perceived or be easy to detect, be difficult for detecting the fatigue life that only causes fracture, and the manufacturing again of therefore studying manufacture a product again vital part remanent fatigue life and product has great importance.
Pelletizing smelt to produce the equipment key component at normal temperature in the environment of high temperature back and forth during operation work, temperature is in the medium-term and long-term operation of the alternating temperature-changing environment of normal temperature to 1050 ℃ in its running, operation moves in circles in such alternating temperature-changing field, because the alternation hot environment forms complicated thermal expansion and alternating thermal stress, cause the heat-resistant piece service life short, in this chilling and shock heating environment, through after certain life cycle, the inner fine cracks that exists of parts, be mingled with, defective such as segregation, under the pulsating stress effect, fine crack appears inevitably.Fine crack expansion, and then the initiation security incident that lost efficacy in case generation will be taken advantage of a situation.In order to develop a circular economy and to guarantee the safe handling of structure, it is made again is very necessary.Consider the special running environment that the equipment key component is produced in the pelletizing smelting, the technology of the present invention will have the production equipment key component of fine crack (or damage) to carry out ion injection and laser-impact Combined Processing to these.Ion injects can fill up fine crack, can introduce a large amount of solute atoms and room in injection process, forms various dislocations, and precipitating metal compound or various alloy phase, make material reinforcement, improve abrasion resistant qualities, high temperature oxidation resistance improves fatigue resistance or the control modified layer makes its malleableize; Its laser-impact is handled, under the high pressure effect of laser blast wave, the microplasticity distortion takes place in the metal surface, forms high amplitude residual compressive stress layer again, thus mechanical performance, the especially fatigue life of having improved metal material effectively.
Summary of the invention
The purpose of this invention is to provide a kind of surface has the pelletizing of fine crack to smelt the reproducing method of producing the equipment key component.
A kind of surface has the pelletizing of fine crack to smelt the reproducing method of producing the equipment key component, it is characterized in that:
(1) the present invention carries out surperficial Non-Destructive Testing at pelletizing smelting production equipment key component material processed position before and after making again, the method test material surface signal that the Non-Destructive Testing sensor separates by error, comprise the various blemish information such as roughness, hardness, crackle, unevenness of workpiece in the signal, can accurately locate the Combined Processing position like this.
(2) part carefully cleans with acetone and absolute alcohol behind grinding and polishing and deoils, carrying out ion on comprehensive ion implantation apparatus injects, comprehensive implanter has been eliminated common beamline ion implanters injection can only be along the limitation of a direction injection, and processing cost is lower.Injecting ion should select (see figure 3) according to the working environment of damage component, and target chamber system vacuum degree maintains 10 during injection
-3～10
-5Between the Pa, the water flowing cooling, energy is at 30～200keV, and beam current density is 6～30 μ A/cm
2, implantation dosage is 10
15～10
18Ions/cm
2, maximum temperature is no more than 200 ℃ during injection, and implantation temperature is directly used thermocouple measurement.
When (3) laser-impact is handled, apply pitch-dark coating at surface of the work earlier, water is cooked protective layer, the fine crack place of component surface is carried out laser-impact handle.In adopting laser impact intensified process, laser output wavelength is 1.054 μ m, the pulse width (FWHM) of output laser is 20ns, pulsed laser energy is about 25J, under the high pressure effect of laser blast wave, the microplasticity distortion takes place in the metal surface, form high amplitude residual compressive stress layer, thereby make crack closure effectively, improved the mechanical performance of metal material, can increase substantially fatigue life, the anti-stress corrosion performance of material especially, clean and drying with acetone and absolute alcohol after the shock treatment.
(4) in the treatment process of manufacturing again of the inventive method, the fine crack member and the blemish that go out at surperficial Non-Destructive Testing, have in the subrange at Combined Processing, rather than large tracts of land whole part Combined Processing, and in processing procedure, select the composition of ion injection and the energy parameter of laser-impact according to workpiece Service Environment and condition.Therefore can effectively economize on resources and the energy, significantly reduce production costs.
The present invention fully combines the characteristics of ion implantation technology and laser-impact technology, and ion implantation technology can be controlled under low temperature or the room temperature carries out, can the original dimensional accuracy of retaining member and surface roughness, do not influence the overall performance of pending material; And in the laser-impact process time lack (20ns) strain rate height (10 especially
7s
-1), be high strain rate cold plasticity enhanced deformation technology, be specially adapted to the fatiguability region of fracture of workpiece, particularly the region of stress concentration surface reinforcement modifying combines the two, and it is modified and reinforced to carry out comprehensive comprehensive surface to metal material.
The innovation of reproducing method of the present invention, the most important thing is through after making again, pelletizing is smelted the oxide that key component matrix top layer forms a kind of densification, can effectively improve high-temperature oxidation resistance, produce the high-amplitude residual compressive stress simultaneously, and this residual compressive stress can make crack closure effectively, move after can making initial crack stablize extension phase, and can improve tired expansion threshold stress intensity factor, reach the purpose that improves fatigue life, and rationally estimate making the back component fatigue life-span again.By PREDICTION OF FATIGUE LIFE before and after member is made again, can predict that like this member is on active service the amount of returning after stopping and the time of cost thereof, produce maximum economy and ecological benefits.This is the maximum characteristics of the inventive method.
Advantage of the present invention is as follows:
(1) its life-span was reliably after this method was made again, was enough to keep next life cycle.Can effectively manage for Life cycle design, maintenance and the length of service of equipment like this, the more important thing is can energy savings and preserve the ecological environment, and for quickening constructing economical society, realizes that economic sustainable development is significant.
(2) owing to kind, dosage, the energy of making intermediate ion injection element again all can accurately be controlled, this method can satisfy the multiple performance requirement of workpiece: this processing method of making again can not only make pelletizing smelt the fine crack closure on production equipment key components and parts surface, and can strengthen modification to the top layer handles, and be applicable to that smelting production in pelletizing equips other structural member, improve workpiece wearability, antifriction quality, high temperature oxidation resistance and corrosion resistance, so improve greatly the fatigue life of workpiece.
(3) this reproducing method is applicable to surperficial irregular component, thin part, aperture, groove and macrostructure spare part is handled, and the distortion of making processing back material surface again is very little, does not influence material heart portion performance.And workpiece is indeformable substantially after handling, outward appearance is even, surface roughness good, can be used as part and finally handles.
(4) this reproducing method feature of environmental protection excellence is without any secondary pollution.
Description of drawings
The reproducing method flow chart of Fig. 1 high-temperature fatigue damage component
The manufacturing process flow diagram again of Fig. 2 high-temperature fatigue damage component.
Fig. 3 injects the mechanical property that the different ions element improves metal material
The specific embodiment
This method technological process as shown in Figure 2, concrete steps are: the first step, determine the fault parts, it is carried out Non-Destructive Testing, surperficial fine crack (or damage) and fault location are positioned; In second step,, carefully clean with acetone and absolute alcohol behind the grinding and polishing and deoil for meeting again the parts of making; In the 3rd step, on comprehensive ion implantation apparatus, carry out ion and inject.Injecting ion should select (see figure 3) according to the working environment of damage component, and present embodiment ion injection parameter is: the injection ion is N
+, target chamber system vacuum degree is 5 * 10 during injection
-4Pa, the water flowing cooling, energy is 80keV, beam current density is 8 μ A/cm
2, implantation dosage is 2 * 10
17Ions/cm
2, maximum temperature is no more than 200 ℃ during injection, and implantation temperature is directly used thermocouple measurement.The ion implantation technology process is: go into stove one and vacuumize a heating one ion and inject a cooling one and come out of the stove; The 4th step, ion carries out laser impact intensified processing after injecting, in adopting laser impact intensified process, laser output wavelength is 1.054 μ m, the pulse width (FWHM) of output laser is 20ns, and pulsed laser energy is about 25J, after pulse laser focuses on through optical mirror slip, hot spot converges in the part injury position, cleans and drying with acetone and absolute alcohol after the shock treatment; In the 5th step, repair member is detected, assesses and estimates its remanent fatigue life.Pelletizing is smelted the little axle of equipment high-temperature damage parts 12CrMoV and is made the back life-span again and prolong greatly, detects its mechanics of surface performance, and with handle before contrast, heat-resisting parts average life span was brought up to more than 4 years by 1.5 years, thereby had greatly improved fatigue life.Result of study shows, part hardness significantly improves behind this remediation intensification, its surface becomes compressive stress state by residual stress state by tension, the highest hardness increase rate is up to 3 times, thereby performances such as its fatigue life and wearability are significantly improved, and this is significant to improving pelletizing smelting equipment key components and parts performance.
Claims (3)
1. the reproducing method of a high-temperature fatigue damage component is characterized in that: the reproducing method of described high-temperature fatigue damage component is that ion injects the effective Combined Processing with laser-impact; Earlier to cleaning behind the high-temperature fatigue damage component grinding and polishing and deoiling; Carry out ion then and inject, carry out ion and inject on comprehensive ion implantation apparatus, temperature should be controlled at and not cause under the crack deformation temperature, and it is selected according to the working environment of each parts of pelletizing smelting production equipment to inject element; Carry out laser-impact again and handle, apply pitch-dark coating at surface of the work earlier, water is cooked protective layer, the fine crack place of component surface is carried out laser-impact handle; At last repair member is detected, assesses and estimate its remanent fatigue life.
2. the reproducing method of a kind of high-temperature fatigue damage component according to claim 1, it is characterized in that: before making again, determine pelletizing smelting production equipment key component face crack situation according to Non-Destructive Testing earlier, it is screened, make for meeting the parts of making again, the parts after making again detect and the remanent fatigue life assessment again; Meeting its interpretational criteria of parts of making is again, its degree of depth of the fine crack of component surface can not surpass pelletizing smelts and produce 5% of equipment parts thickness, and width injects with ion to be filled up crackle fully and be advisable.
3. the reproducing method of a kind of high-temperature fatigue damage component according to claim 1 and 2 is characterized in that: when described ion injected, target chamber system vacuum degree maintained 10
-3～10
-5Between the Pa, the water flowing cooling, energy is at 30～200keV, and beam current density is 6～30 μ A/cm
2, implantation dosage is 10
15～10
18Ions/cm
2, maximum temperature is no more than 200 ℃ during injection, and implantation temperature is directly used thermocouple measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101843051A CN101633109B (en) | 2009-08-12 | 2009-08-12 | Method for reproducing high-temperature fatigue damage component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101843051A CN101633109B (en) | 2009-08-12 | 2009-08-12 | Method for reproducing high-temperature fatigue damage component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101633109A true CN101633109A (en) | 2010-01-27 |
| CN101633109B CN101633109B (en) | 2012-04-04 |
Family
ID=41592531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101843051A Expired - Fee Related CN101633109B (en) | 2009-08-12 | 2009-08-12 | Method for reproducing high-temperature fatigue damage component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101633109B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323388A (en) * | 2011-05-18 | 2012-01-18 | 河北钢铁股份有限公司邯郸分公司 | A kind of roll bending limit portion vertical crack produces the determination methods of reason |
| CN104451662A (en) * | 2014-11-21 | 2015-03-25 | 南京机电职业技术学院 | Combined treatment method for crack repair and strengthening of part in high-temperature working environment |
| CN106637123A (en) * | 2016-12-22 | 2017-05-10 | 当涂县宏宇金属炉料有限责任公司 | Stainless steel surface treatment technology based on ion injection |
| CN111185727A (en) * | 2020-01-16 | 2020-05-22 | 郑州煤机综机设备有限公司 | Guide sleeve remanufacturing method |
| CN113186526A (en) * | 2021-04-30 | 2021-07-30 | 广东省科学院新材料研究所 | Metal coating and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4103803B2 (en) * | 2004-01-15 | 2008-06-18 | セイコーエプソン株式会社 | Optical apparatus and projector |
| CN101412176A (en) * | 2008-11-20 | 2009-04-22 | 江苏大学 | Laser impact refabrication method for metallic structural parts containing fine crack |
-
2009
- 2009-08-12 CN CN2009101843051A patent/CN101633109B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323388A (en) * | 2011-05-18 | 2012-01-18 | 河北钢铁股份有限公司邯郸分公司 | A kind of roll bending limit portion vertical crack produces the determination methods of reason |
| CN102323388B (en) * | 2011-05-18 | 2013-12-18 | 河北钢铁股份有限公司邯郸分公司 | Judging method for causing reason of straight crack at edge of rolling plate |
| CN104451662A (en) * | 2014-11-21 | 2015-03-25 | 南京机电职业技术学院 | Combined treatment method for crack repair and strengthening of part in high-temperature working environment |
| CN106637123A (en) * | 2016-12-22 | 2017-05-10 | 当涂县宏宇金属炉料有限责任公司 | Stainless steel surface treatment technology based on ion injection |
| CN111185727A (en) * | 2020-01-16 | 2020-05-22 | 郑州煤机综机设备有限公司 | Guide sleeve remanufacturing method |
| CN113186526A (en) * | 2021-04-30 | 2021-07-30 | 广东省科学院新材料研究所 | Metal coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101633109B (en) | 2012-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101403114B (en) | Surface crack renovation method for key elements of chain grate | |
| CN101633109B (en) | Method for reproducing high-temperature fatigue damage component | |
| CN100560748C (en) | A kind of compounding method that prolongs the key elements of chain grate life-span | |
| CN103409758B (en) | Pump shells and blade microcrack laser reinforcing life-prolonging method | |
| Murray et al. | Repair of EDM induced surface cracks by pulsed electron beam irradiation | |
| Liu et al. | Thermal fatigue evaluation of AISI H13 steels surface modified by gas nitriding with pre-and post-shot peening | |
| CN102877061A (en) | Method and device for remanufacturing stainless steel pump parts through laser cladding | |
| US9028627B2 (en) | Method for case hardening a component by means of oil jets and device for carrying out said method | |
| Tridello et al. | VHCF response of AISI H13 steel: assessment of size effects through Gaussian specimens | |
| Bode et al. | Local deformation at micro‐notches and crack initiation in an intermetallic γ‐TiAl‐alloy | |
| Kumar et al. | Corrosion fatigue of welded joints in marine and naval structures: A review | |
| CN114166605B (en) | Method for simulating and predicting core tissue performance of large-size CrMo steel member | |
| CN101629227B (en) | Reinforcement method and reinforcement device for improving high-temperature fatigue life of material | |
| Yao et al. | Laser hardening techniques on steam turbine blade and application | |
| Lopata et al. | Dependence of the elastic modulus of powder coatings on their porosity in electrical contact hardening | |
| Chen et al. | Influence of carbon pre-coating prior to laser deposition on rolling contact fatigue of gray cast iron | |
| Kusmierczak et al. | Comprehensive approach to evaluation of degradation in chosen parts of energy equipment | |
| Ren et al. | Influence of compound laser life-extension treatment on mechanical properties of key parts of pellet traveling grate | |
| CN113737175B (en) | Laser composite repairing method for plunger rod of ultrahigh-pressure plunger pump | |
| Ivanov | DESTRUCTION OF A CAST IRON CYLINDER HEAD IN OPERATION AND AFTER WELDING RECOVERY. | |
| Gronostajski et al. | Trwałość narzędzi w procesach kucia | |
| Zhao et al. | Environmental Sustainability of Laser-Based Manufacturing: Case Studies on Laser Shock Peening and Laser Assisted Turning | |
| Torkar | Corrosion of AISI 316 Ti in 50% KOH due to deformation induced martensite | |
| Nechaev et al. | OPTIMIZATION OF PARAMETERS OF THE PLASMA SURFACE HARDENING PROCESS | |
| Solgi et al. | Heat checking as a failure mechanism of dies exposed to thermal cycles: A review |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20120812 |