CN101886160B - Metal surface modification method through emulsion jet - Google Patents
Metal surface modification method through emulsion jet Download PDFInfo
- Publication number
- CN101886160B CN101886160B CN2010102243211A CN201010224321A CN101886160B CN 101886160 B CN101886160 B CN 101886160B CN 2010102243211 A CN2010102243211 A CN 2010102243211A CN 201010224321 A CN201010224321 A CN 201010224321A CN 101886160 B CN101886160 B CN 101886160B
- Authority
- CN
- China
- Prior art keywords
- emulsion
- jet
- water
- metal surface
- oil
- 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.)
- Expired - Fee Related
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a metal surface modification method through emulsion jet, belonging to the processing technology of metal material surface. The metal surface modification method mainly comprises the following steps: preparing an emulsion which can produce effective cavitation bubbles and jet effect; immersing a component to be processed in the emulsion; adjusting a jet nozzle, a jet pressure and a distance between the jet nozzle and the processed metal; carrying out jet processing on the metal surface in the emulsion medium; taking the emulsion as a medium for producing cavitation jet;and forming the metal surface modification method through emulsion jet, thus improving fatigue strength of a test piece by 56% and 11% respectively. The metal surface modification method through emulsion jet of the invention has the advantages of generating the effective cavitation bubbles and improving processing efficiency of the metal surface, generating no corrosion for the metal surface, polluting no environment, having low cost, being not easy to damage the metal surface, having low investment cost and use cost, good use effects and being easy to be promoted and applied; in addition, residual emulsion does not corrode the metal surface.
Description
Technical field
The present invention relates to a kind of metal material surface processing technology, particularly a kind of metal surface modification method through emulsion jet.
Background technology
Introduce residual compressive stress on the surface and can obviously improve the fatigue strength of metallic substance, the mechanical means of many surface modifications is arranged, as shot-peening, laser peening, ultrasonic shot peening, roll with roll-in deeply etc., all can cause the formation of material surface residual compressive stress.In order to improve the detrimental action of solid particulate jet to crack initiation, in generation nineteen ninety, people have proposed to utilize the thought of Fluid Jet Technology work hardening metallic surface and continually developing water jet and oily jet shot peening technology.In these technology, the high-velocity liquid jet that produces by high pressure gas acts on the metallic surface, makes it to produce residual compressive stress.The size of specimen surface unrelieved stress and the degree of depth depend on jet pressure, jet time and the strength of materials, and the water jet cavitation is sprayed to strengthen the fatigue strength that improves metal is better than shot peening, and is comparatively obvious to the effect that prolongs fatigue crack initiation; The research of cavitation jet blasting technology has obtained some substantial progress.
But because water may cause certain corrosion on member, though its Technology is simple and easy, and can not cause big water consumption, its strengthening effect is subjected to the corrupting influence of water; The oily jet shot-peening that further develops can be avoided etching problem, and cleaning problem and investment that oily jet shot-peening relates to sample are bigger, although can adopt oil circulation mode, but inevitably has oily consumption.These problems have limited the application of water (oil) jet blasting technology to a certain extent.
Summary of the invention
The objective of the invention is to provide a kind of: the metal surface modification method through emulsion jet that metallic substance is had weak protectiveness.
The object of the present invention is achieved like this: this metal surface modification method comprises that mainly preparation can produce the emulsion of effective cavitation bubble and jet effect; Part to be processed is immersed in the described emulsion, adjusts the distance of ejector nozzle, jet pressure and ejector nozzle and work metal, in emulsifiable solution medium jet processing is carried out in the metallic surface, specific embodiment is:
(1) adopt emulsion as producing the effusive medium, emulsion is the mixture of oil in water emulsion and water; The ratio that cooperates of oil in water emulsion and water under the room temperature, oil in water emulsion is 3%～10%, water is 97%～90%, adds the pH value that anhydrous sodium carbonate is regulated emulsion then, and the pH value of emulsion is controlled at 7-10, viscosity average 1.0～1.5cSt, lower critical Reynolds coefficient is less than 2320;
(2) part to be processed is immersed in the described emulsion, opens emulsion jet machine emulsion jet and produce the emulsion bubble flow by ejector nozzle, jet pressure is 20～60MPa, and the emulsion spread angle of jet is 25～5 °.
(3) mobile emulsion ejector nozzle makes jet perpendicular alignmnet part work surface, and the jet exit of ejector nozzle is 15～30cm to the distance of part work surface.
The outward appearance of described oil in water emulsion is transparent or semitransparent liquid, pH value 7-10, and kinematic viscosity is 35-50 in the time of 40 ℃, corrodes 45 steel 24h and is not more than 1; Described emulsion is that oil in water emulsion mixes back formation oil-in-water (O/W) type emulsion with water; Described and oil in water emulsion blended water is anhydrous sodium carbonate remollescent water; Use temperature after the described emulsion preparation is 2～30 ℃.
Beneficial effect, owing to adopted such scheme, the medium that utilizes emulsion to produce as cavitation jet forms metal surface modification method through emulsion jet.Fatigue strength to metal is better than the shot peening method of using water medium, and is especially remarkable to the effect that prolongs fatigue crack initiation; With respect to adopting oil is the jet ball blasting method of medium, has solved the cleaning problem to sample, greatly reduces cost of investment and use cost; After high pressure water impact intensive treatment to materials such as aluminium alloy, silicomanganese and carbon steels, the fatigue strength that can make the fatigue ratio of strengthening test specimen not strengthen test specimen improves 56% and 11% respectively, compare with traditional shot peening strengthening, fatigue strength has improved 4%～36%, test specimen surfaceness after the processing changes little, and the surface roughness value Ra that handles the back test specimen reduces greatly; The jet bubble that ejector nozzle produces is even, is difficult for causing the injury of metallic surface, and residual emulsion does not have corrosive nature to the metallic surface, and the metallic surface of processing can not produce anticaustic because of jet media; Metallic substance is had weak protectiveness, reached purpose of the present invention.
Advantage is: can produce effective cavitation bubble, improve the metallic surface working (machining) efficiency, the metallic surface is not produced corrosion, environmentally safe again, with low cost, be difficult for causing the injury of metallic surface, residual emulsion does not have corrosive nature to the metallic surface, and cost of investment and use cost are low, result of use is good, very easily promotion and application.
Embodiment
Embodiment 1: to the straight carbon steel surface modification.Adopt translucent oil in water emulsion, its pH value is 10, and kinematic viscosity is 50 in the time of 40 ℃, corrodes 45 steel 24h and is not more than 1.Be 10% according to oil in water emulsion under the room temperature, water is 90% ratio proportioning, the preparation emulsion, and the pH value of regulating emulsion with anhydrous sodium carbonate is 10, and viscosity average is 1.5cSt, and lower critical Reynolds coefficient is less than 2320; Open emulsion jet machine, control jet pressure is 50MPa, and the cavitation bubble spread angle that jet produces is 6 °, and the distance that injection stream exports to the part work surface is 30cm, and the hardness and the fatigue lifetime of finished surface significantly improve.
Described emulsion jet machine is a hydro-pump; Described oil in water emulsion be commercial product.
Embodiment 2: to SiMn steel alloy surface modification.Adopt translucent oil in water emulsion, its pH value is 8, and kinematic viscosity is 45 in the time of 40 ℃, corrodes 45 steel 24h and is not more than 1.Oil in water emulsion is 6% under the room temperature, water is 94% ratio proportioning, the preparation emulsion, the pH value of regulating emulsion with anhydrous sodium carbonate is 8, and viscosity average is 1.1cSt, opens emulsion jet machine, control jet pressure is 60MPa, the cavitation bubble spread angle that jet produces is 5 °, and the distance that injection stream exports to the part work surface is 25cm, and the hardness and the fatigue lifetime of finished surface significantly improve.Other and embodiment 1 are together.
Embodiment 3: to the straight carbon steel surface modification.Adopt translucent oil in water emulsion, its pH value is 7, and kinematic viscosity is 35 in the time of 40 ℃, corrodes 45 steel 24h and is not more than 1.Under the room temperature oil in water emulsion be 3%, water is 97% ratio proportioning, the preparation emulsion, the pH value of regulating emulsion with anhydrous sodium carbonate is 7, viscosity average is 1.0cSt, open emulsion jet machine, control jet pressure is 20MPa, and the cavitation bubble spread angle that jet produces is 25 °, and the distance that injection stream exports to the part work surface is 15cm, the hardness of finished surface improves, and rusty scale is removed.Other and embodiment 1 are together.
Embodiment 4: to the bottom modification of steel part keyway.Adopt translucent oil in water emulsion, its pH value is 8, and kinematic viscosity is 45 in the time of 40 ℃, corrodes 45 steel 24h and is not more than 1.The ratio of oil in water emulsion and water is 5% under the room temperature, and water is 95% ratio proportioning, the preparation emulsion, and the pH value of regulating emulsion with anhydrous sodium carbonate is 9, viscosity average is 1.4cSt; Open emulsion jet machine, control jet pressure is 40MPa, and the cavitation bubble spread angle that jet produces is 11 °, and the distance that injection stream exports to the part work surface is 25cm, and the hardness of finished surface significantly improves.Other and embodiment 1 are together.
Claims (1)
1. metal surface modification method through emulsion jet, it is characterized in that: this metal surface modification method comprises that mainly preparation can produce the emulsion of effective cavitation bubble and jet effect; Part to be processed is immersed in the described emulsion, adjusts the distance of ejector nozzle, jet pressure and ejector nozzle and work metal, in emulsifiable solution medium jet processing is carried out in the metallic surface, specific embodiment is:
(1) adopt emulsion as producing the effusive medium, emulsion is the mixture of oil in water emulsion and water; The ratio that cooperates of oil in water emulsion and water under the room temperature, oil in water emulsion is 3%～10%, water is 97%～90%, adds the pH value that anhydrous sodium carbonate is regulated emulsion then, and the pH value of emulsion is controlled at 7-10, viscosity average 1.0～1.5cSt, lower critical Reynolds coefficient is less than 2320;
(2) part to be processed is immersed in the described emulsion, opens emulsion jet machine emulsion jet and produce the emulsion bubble flow by ejector nozzle, jet pressure is 20～60MPa, and the emulsion spread angle of jet is 25～5 °;
(3) mobile emulsion ejector nozzle makes jet perpendicular alignmnet part work surface, and the jet exit of ejector nozzle is 15～30cm to the distance of part work surface;
The outward appearance of described oil in water emulsion is transparent or semitransparent liquid, pH value 7-10, and kinematic viscosity is 35-50 in the time of 40 ℃, corrodes 45 steel 24h and is not more than 1; Described emulsion is that oil in water emulsion mixes back formation oil-in-water (O/W) type emulsion with water; Described and oil in water emulsion blended water is anhydrous sodium carbonate remollescent water; Use temperature after the described emulsion preparation is 2～30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102243211A CN101886160B (en) | 2010-07-06 | 2010-07-06 | Metal surface modification method through emulsion jet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102243211A CN101886160B (en) | 2010-07-06 | 2010-07-06 | Metal surface modification method through emulsion jet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886160A CN101886160A (en) | 2010-11-17 |
| CN101886160B true CN101886160B (en) | 2011-09-14 |
Family
ID=43072250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102243211A Expired - Fee Related CN101886160B (en) | 2010-07-06 | 2010-07-06 | Metal surface modification method through emulsion jet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101886160B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286439B (en) * | 2013-05-23 | 2015-08-12 | 广东工业大学 | A kind of nano-antenna building mortion based on laser cavitation and method |
| CN106181100B (en) * | 2016-07-26 | 2019-05-31 | 江苏大学 | A kind of cavitation corrosion accumulation processing method and its device |
| US10836012B2 (en) * | 2017-08-31 | 2020-11-17 | The Boeing Company | Method and apparatus for fluid cavitation abrasive surface finishing |
| CN109142689A (en) * | 2018-09-30 | 2019-01-04 | 山东迈拓凯尔新材料科技有限公司 | A kind of laboratory emulsion circulating analog device |
| CN110055390B (en) * | 2019-04-28 | 2020-08-28 | 江苏大学 | Pressure alternating immersion type inner hole surface strengthening device and method |
| CN110106332B (en) * | 2019-04-28 | 2020-09-25 | 江苏大学 | Swing volume alternating micropore inner surface strengthening device |
| CN112626322B (en) * | 2020-12-11 | 2022-12-16 | 华东理工大学 | Jet flow strengthening device and method |
| CN116287988B (en) * | 2023-02-28 | 2024-02-06 | 徐州徐工基础工程机械有限公司 | High-carbon medium-manganese cast steel impact shell in rock drill and processing technology thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3644116A1 (en) * | 1986-12-23 | 1988-07-07 | Mtu Muenchen Gmbh | EROSION-RESISTANT COATING |
| US5334417A (en) * | 1992-11-04 | 1994-08-02 | Kevin Rafferty | Method for forming a pack cementation coating on a metal surface by a coating tape |
| JPH107477A (en) * | 1996-06-19 | 1998-01-13 | Toshiba Corp | Protection coating film structure of ceramic part, gas turbine blade, ball bearing and inspection of coating film |
| CN1362537A (en) * | 2001-01-05 | 2002-08-07 | 李文英 | Metal foil and metal sheet with coated ceramic film or antioxidant metal film |
-
2010
- 2010-07-06 CN CN2010102243211A patent/CN101886160B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101886160A (en) | 2010-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101886160B (en) | Metal surface modification method through emulsion jet | |
| Soyama et al. | Fatigue strength improvement of gears using cavitation shotless peening | |
| Azhari et al. | Improving surface hardness of austenitic stainless steel using waterjet peening process | |
| US10335924B2 (en) | Method and blasting means for producing a satinized finish on an aluminium substrate | |
| Barriuso et al. | Roughening of metallic biomaterials by abrasiveless waterjet peening: Characterization and viability | |
| Kim et al. | Effects of water cavitation peening on electrochemical characteristic by using micro-droplet cell of Al–Mg alloy | |
| Kang et al. | Effect of grinding parameters on surface quality, microstructure and rolling contact fatigue behaviors of gear steel for vacuum pump | |
| Bao et al. | Effects of WC on the cavitation erosion resistance of FeCoCrNiB0. 2 high entropy alloy coating prepared by laser cladding | |
| Ijiri et al. | Improvement of corrosion resistance of low-alloy steels by resurfacing using multifunction cavitation in water | |
| Santos et al. | Behavior of the reversed austenite in CA-6NM martensitic stainless steel under cavitation | |
| Xiao et al. | Improved wear resistance of 440C steel ball via ultrasonic strengthening grinding process | |
| Zhao et al. | Effect of hardness gradient of laser bionic coupling unit on wear resistance of 6082 aluminum alloy | |
| JP2006297569A (en) | Material surface treatment method, and device therefor | |
| CN103806846B (en) | Anti-corrosion wear-proof sucker polish | |
| JP5124947B2 (en) | Method for improving fatigue strength of metal materials | |
| Gopinath et al. | Introduction of enhanced compressive residual stress profiles in aerospace components using combined mechanical surface treatments | |
| Takakuwa et al. | Suppression of fatigue crack propagation with hydrogen embrittlement in stainless steel by cavitation peening | |
| JP2001198828A (en) | Manufacturing method for stainless steel with excellent corrosion resistance | |
| Zhan et al. | Tribological behavior and corrosion resistance of S30432 steel after different shot peening processes | |
| Fu et al. | Effect of deep rolling parameters on surface integrity of LZ50 axles | |
| Rautio et al. | Surface Roughness Improvement of Pbf-Lb Manufactured 316l with Dry Electropolishing | |
| Grinspan et al. | Surface modification by oil jet peening in Al alloys, AA6063-T6 and AA6061-T4: Residual stress and hardness | |
| Ma et al. | Injection water jet peening of carburised 18CrNiMo7-6 steel surfaces | |
| He et al. | Mechanisms and characteristics of ultrasonic impact treatment on steel surface | |
| DK2801443T3 (en) | Treatment medium for the treatment of surfaces in stainless steel or other metal surfaces, method for treatment of surface of stainless steel or other metal surfaces using such treatment medium and ... |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20160706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |