CN104044018A - Surface nanometer layer preparing method for Q235 carbon structural steel shaft type work-piece - Google Patents
Surface nanometer layer preparing method for Q235 carbon structural steel shaft type work-piece Download PDFInfo
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- CN104044018A CN104044018A CN201410292365.6A CN201410292365A CN104044018A CN 104044018 A CN104044018 A CN 104044018A CN 201410292365 A CN201410292365 A CN 201410292365A CN 104044018 A CN104044018 A CN 104044018A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
Abstract
The invention discloses a surface nanometer layer preparing method for a Q235 carbon structural steel shaft type work-piece. According to the method, surface nanocrystallization processing is carried out on the Q235 carbon structural steel shaft type work-piece in the atmospheric environment, the method is simple, convenient and fast to carry out, efficient and good in controllability, the work-piece is pollution-free, clean and environmentally friendly, the diameter of the prepared surface nanocrystallization shaft type work-piece ranges from 10 mm to 60 mm, the maximum length is 1000 mm, the maximum thickness of an intense shaping deformation layer of the work-piece is 132 micrometers, and the average grain size of the outer surface layer ranges from 29 nm to 65 nm. The method is applicable to various materials such as structural alloy steel and stainless steel as well as the Q235 carbon structural steel.
Description
Technical field
The present invention relates to nanocrystal surface layer preparing technical field, relate in particular to a kind of Q235 carbon structural steels shaft-like workpiece surface nanometer layer preparation method.
Background technology
Making Nano surface, it is an important study hotspot in nano surface work, it is by forming nanostructured top layer at material surface, utilize the functional characteristic of nano material excellence significantly to improve overall performance and the characteristic of material, feature is to adopt many existing Surface-micromachining processes to realize, be subject to the restriction of workpiece shape, size less, productivity ratio is high.This combination for nanometer technology and common metal material provides practicable approach.Therefore, there are huge Application and Development potentiality industrial, are also conducive to carry out the research to some other performances of nano material.Nanosurface is considered to be most likely at one of nanometer technology obtaining on structural material breakthrough.Result of study shows, making Nano surface is conducive to machinery and the chemical property of betterment works metal material surface (and entirety).
On block coarse grain material, obtain nanostructured top layer and mainly contain three kinds of basic modes: 1) surface applies or sedimentation; 2) surface is from thinking of a way; 3) composite hybridization.First kind of way is mainly based on existing conventional coating or deposition technique, as PVD, CVD, sputter, electrolytic deposition etc.; The second way makes polycrystalline material superficial layer open grain structure be refined to gradually nanometer scale by non-equilibrium processing (machinery or hot activation); The third mode is that nanocrystallization technology is combined with chemical treatment, while formation or after forming, material is carried out to chemical treatment on nanostructured top layer, forms the solid solution different from matrix composition or the nanostructured layers of compound at material surface.Surface is a kind of gradient-structure from the gained nanostructured top layer of thinking of a way, and with not Presence of an interface of matrix, and compared with before nanometer, material appearance and size is substantially constant, has its unique advantage.Machinery and hot activation surface nanometer, the former has more development and application values.Therefore, at present making Nano surface research self nanometer that focuses mostly on mechanical activation surface.Theoretically, most conventional mechanical surface treatment technology, as shot-peening, laser pulse shock treatment and mechanical lapping, polishing, surface rolling etc., all can be used for potentially realizing making Nano surface, its key is to make material list surface layer to produce strong plastic deformation, to meet nanometer requirement.
Lot of domestic and international research institution and colleges and universities have all carried out the research work of making Nano surface of metal material, as the Lu Ke of metal institute of the Chinese Academy of Sciences etc. utilizes shot-peening, surface mechanical attrition method is at pure iron, the material surface such as mild steel and stainless steel has obtained the Nanosurface layer that average grain size is 10 ~ 20nm, Germany Altenberger etc. utilizes shot-peening and strong two kinds for the treatment of technologies of surface rolling (deep rolling), Canada Wang etc. utilizes shot-peening-annealing process to prepare nano combined superficial layer in AISI304 surface of stainless steel, the employing supersonic microparticle bombardment methods such as Chinese Academy of Sciences metal institute bear sky English have obtained the Nanosurface layer that average grain size is ~ 14nm on Austenitic stainless steel pipe and on 40Cr steel.Different method for making Nano surface respectively has its feature, and the nanometer microcosmic mechanism causing there are differences; The material of different structure, its nanometer behavior also there are differences.In recent years owing to being subject to the support of the aspect new results such as material, physics and computer modeling technique, preparation and the performance study of metal material surface nanometer have had considerable progress, about the understanding of its nanometer mechanism, strengthening and toughening mechanism and mechanical property and corrosion behavior also deepens continuously, scientific worker, just in unremitting effort, is devoted to convenient preparation and intrinsic performance research reliable, making Nano surface of metal material efficiently both at home and abroad.
The fields such as that carbon structural steels is widely used in is electric, light industry, machine-building, water supply, building, railway, bridge, national defence, mainly for the manufacture of bearing the various hardwares of dead load and not needing heat treated machine components and general weldment, wherein Q235 is most widely used a kind of carbon structural steels.The failure mode of metal material is mainly burn into wearing and tearing and fracture, and burn into wearing and tearing and fatigue fracture all start from material surface, so the structure of material surface and performance directly affect the combination property of engineering metal material.Utilize the excellent properties of nano metal material to carry out surface texture improvement to traditional engineering metal material, prepare one deck on Q235 tradition carbon structural steels surface and have the superficial layer of nanocrystalline structure, it is making Nano surface, can significantly improve its comprehensive mechanical property and environment military service behavior, there is huge engineering using value.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of Q235 carbon structural steels shaft-like workpiece surface nanometer layer preparation method is provided.
The object of the invention is to be achieved through the following technical solutions, a kind of Q235 carbon structural steels shaft-like workpiece surface nanometer layer preparation method, comprises the following steps:
(1) be circle shaft-like workpiece, surface roughness≤12.5 μ m by the Vehicle Processing of commercial Q235 round steel;
(2) the circular shaft shape surface of the work after step 1 processing is carried out to acetone cleaning;
(3) the circular arc end face of the round shaft-like workpiece after step 2 is cleared up contacts with the discoid applicator circular-arc bottom face of ultrasonic wave;
(4) start Surface Nanocrystalline device, under pressure 0.50 ~ 0.55MPa, ultrasonic power output 2800 ~ 3000W, frequency 20KHz, amplitude 35 ~ 40 μ m, workpiece rotational line speed 5.0 ~ 5.7mm/s and straight line moving speed 3.1 ~ 21mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, can obtain the workpiece of making Nano surface.
The present invention, compared with other making Nano surface of metal material technologies of preparing, mainly has following 4 features:
1. pair workpiece surface roughness is less demanding;
2. in atmospheric environment, workpiece is carried out to Surface Nanocrystalline, simple, convenient, efficient, controllability is good;
3. pollution-free, clean environmental protection;
4. the applicable metal material kind of the present invention is many, except Q235 carbon structural steels, is also applicable to the materials such as structural alloy steel, stainless steel.
Brief description of the drawings
Fig. 1 is Surface Nanocrystalline device schematic diagram of the present invention;
Fig. 2 is Surface Nanocrystalline workpiece of the present invention and applicator position and relative motion schematic diagram;
Fig. 3 is Surface Nanocrystalline workpiece of the present invention and applicator position and another angle schematic diagram of relative motion.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As Figure 1-3, Surface Nanocrystalline device comprises work base station, rotation walking mechanism, workpiece, applicator, supersonic generator, control system and compression system; Described rotation walking mechanism is placed on work base station, workpiece is fixed in rotation walking mechanism by left and right swivel head, applicator circular-arc bottom face contacts with workpiece circular arc end face, supersonic generator is all connected with applicator with compression system, and control system is controlled supersonic generator, compression system and rotation walking mechanism.
A kind of Q235 carbon structural steels of the present invention shaft-like workpiece surface nanometer layer preparation method, comprises the following steps:
(1) get the Vehicle Processing of commercial Q235 round steel for circle shaft-like workpiece, surface roughness≤12.5 μ m;
(2) the circular shaft shape surface of the work after step 1 processing is carried out after acetone cleaning, be fixed in by left and right swivel head in the rotation walking mechanism of Surface Nanocrystalline device;
(3) the discoid applicator of ultrasonic wave maintains static, first adjust the horizontal level of the rotation walking mechanism of making Nano surface treating apparatus, surface of the work nanometer starting position markings are adjusted to the right place, then adjust the height and position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece circular arc end face is contacted with applicator circular-arc bottom face;
(4) start Surface Nanocrystalline device, by compression system, applicator is applied to static pressure, ensure that the pressure that applicator applies workpiece is 0.50 ~ 0.55MPa, regulating supersonic generator power output is 2800 ~ 3000W, frequency 20KHz, amplitude is 35 ~ 40 μ m, regulating workpiece rotational line speed is 5.0 ~ 5.7mm/s, rotation walking mechanism straight line moving speed is 3.1 ~ 21mm/min, start control system, supersonic generator is started working, workpiece rotates clockwise with the rotating speed regulating automatically, rotate simultaneously walking mechanism automatically with the straight line moving speed that regulates left or right lateral walk, start workpiece to carry out Surface Nanocrystalline,
(5) the rotation walking mechanism surface of the work nanometer end position of walking, control system is closed supersonic generator and rotation walking mechanism automatically, and workpiece stops operating and moves;
(6) remove compression system static pressure that applicator is applied, adjust the rotation walking mechanism position of making Nano surface treating apparatus, after workpiece and applicator are disengaged, from left and right swivel head, take out, can obtain the workpiece of making Nano surface.
The making Nano surface shaft-like workpiece diameter obtaining is 10 ~ 60mm, and maximum length is 1000mm, and the strong moulding deformation layer maximum ga(u)ge of workpiece is 132 μ m, and extexine average grain size is 29 ~ 65nm.
Embodiment 1
1) get the round shaft-like workpiece that the Vehicle Processing of commercial Q235B round steel is length 150 mm, Φ 10 mm, surface roughness 6.3 μ m;
2) circular shaft shape surface of the work is carried out after acetone cleaning, be fixed in the rotation walking mechanism of Surface Nanocrystalline device;
3) the discoid applicator of ultrasonic wave maintains static, and horizontal level and the height and position of the rotation walking mechanism of Surface Nanocrystalline device are adjusted to the right place;
4) start Surface Nanocrystalline device, under pressure 0.50MPa, ultrasonic power output 2800W, frequency 20KHz, amplitude 35 μ m, workpiece rotational line speed 5.7mm/s and straight line moving speed 21mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, processing finishes rear closing surface nanometer treating apparatus, adjust horizontal level and the height and position position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece and applicator are disengaged to rear taking-up workpiece, can obtain the workpiece of making Nano surface.Section metallographic observation, measuring strong moulding deformation layer maximum ga(u)ge is 102 μ m; It is 65nm that XRD adopts Scherrer formula to calculate workpiece extexine average grain size.
Embodiment 2
1) get the round shaft-like workpiece that the Vehicle Processing of commercial Q235A round steel is length 200 mm, Φ 20 mm, surface roughness 12.5 μ m;
2) circular shaft surface of the work is carried out after acetone cleaning, be fixed in the rotation walking mechanism of Surface Nanocrystalline device;
3) the discoid applicator of ultrasonic wave maintains static, and horizontal level and the height and position of the rotation walking mechanism of Surface Nanocrystalline device are adjusted to the right place;
4) start Surface Nanocrystalline device, under 0.50MPa pressure, ultrasonic power output 2800W, frequency 20KHz, amplitude 35 μ m, workpiece rotational line speed 5.7mm/s and straight line moving speed 10mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, processing finishes rear closing surface nanometer treating apparatus, adjust horizontal level and the height and position position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece and applicator are disengaged to rear taking-up workpiece, can obtain the workpiece of making Nano surface.Section metallographic observation, measuring strong moulding deformation layer maximum ga(u)ge is 104 μ m; It is 61nm that XRD adopts Scherrer formula to calculate workpiece extexine average grain size.
Embodiment 3
1) get the round shaft-like workpiece that the Vehicle Processing of commercial Q235B round steel is length 400 mm, Φ 30 mm, surface roughness 6.3 μ m;
2) circular shaft surface of the work is carried out after acetone cleaning, be fixed in the rotation walking mechanism of Surface Nanocrystalline device;
3) the discoid applicator of ultrasonic wave maintains static, and horizontal level and the height and position of the rotation walking mechanism of Surface Nanocrystalline device are adjusted to the right place;
4) start Surface Nanocrystalline device, under 0.55MPa pressure, ultrasonic power output 2800W, frequency 20KHz, amplitude 38 μ m, workpiece rotational line speed 5.2mm/s and straight line moving speed 6.6mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, processing finishes rear closing surface nanometer treating apparatus, adjust horizontal level and the height and position position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece and applicator are disengaged to rear taking-up workpiece, can obtain the workpiece of making Nano surface.Section metallographic observation, measuring strong moulding deformation layer maximum ga(u)ge is 109 μ m; It is 57nm that XRD adopts Scherrer formula to calculate workpiece extexine average grain size.
Embodiment 4
1) get the round shaft-like workpiece that the Vehicle Processing of commercial Q235B round steel is length 600 mm, Φ 40 mm, surface roughness 6.3 μ m;
2) circular shaft surface of the work is carried out after acetone cleaning, be fixed in the rotation walking mechanism of Surface Nanocrystalline device;
3) the discoid applicator of ultrasonic wave maintains static, and horizontal level and the height and position of the rotation walking mechanism of Surface Nanocrystalline device are adjusted to the right place;
4) start Surface Nanocrystalline device, under 0.55MPa pressure, ultrasonic power output 3000W, frequency 20KHz, amplitude 38 μ m, workpiece rotational line speed 5.0mm/s and straight line moving speed 4.7mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, processing finishes rear closing surface nanometer treating apparatus, adjust horizontal level and the height and position position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece and applicator are disengaged to rear taking-up workpiece, can obtain the workpiece of making Nano surface.Section metallographic observation, measuring strong moulding deformation layer maximum ga(u)ge is 120 μ m; It is 36nm that XRD adopts Scherrer formula to calculate workpiece extexine average grain size.
Embodiment 5
1) get the round shaft-like workpiece that the Vehicle Processing of commercial Q235A round steel is length 800 mm, Φ 50 mm, surface roughness 12.5 μ m;
2) circular shaft surface of the work is carried out after acetone cleaning, be fixed in the rotation walking mechanism of Surface Nanocrystalline device;
3) the discoid applicator of ultrasonic wave maintains static, and horizontal level and the height and position of the rotation walking mechanism of Surface Nanocrystalline device are adjusted to the right place;
4) start Surface Nanocrystalline device, under 0.50MPa pressure, ultrasonic power output 2800W, frequency 20KHz, amplitude 40 μ m, workpiece rotational line speed 5.0mm/s and straight line moving speed 3.8mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, processing finishes rear closing surface nanometer treating apparatus, adjust horizontal level and the height and position position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece and applicator are disengaged to rear taking-up workpiece, can obtain the workpiece of making Nano surface.Section metallographic observation, measuring strong moulding deformation layer maximum ga(u)ge is 115 μ m; It is 50nm that XRD adopts Scherrer formula to calculate workpiece extexine average grain size.
Embodiment 6
1) get the round shaft-like workpiece that the Vehicle Processing of commercial Q235B round steel is length 1000 mm, Φ 60 mm, surface roughness 6.3 μ m;
2) circular shaft surface of the work is carried out after acetone cleaning, be fixed in the rotation walking mechanism of Surface Nanocrystalline device;
3) the discoid applicator of ultrasonic wave maintains static, and horizontal level and the height and position of the rotation walking mechanism of Surface Nanocrystalline device are adjusted to the right place;
4) start Surface Nanocrystalline device, under 0.55MPa pressure, ultrasonic power output 3000W, frequency 20KHz, amplitude 40 μ m, workpiece rotational line speed 5.0mm/s and straight line moving speed 3.1mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, processing finishes rear closing surface nanometer treating apparatus, adjust horizontal level and the height and position position of the rotation walking mechanism of making Nano surface treating apparatus, workpiece and applicator are disengaged to rear taking-up workpiece, can obtain the workpiece of making Nano surface.Section metallographic observation, measuring strong moulding deformation layer maximum ga(u)ge is 132 μ m; It is 29nm that XRD adopts Scherrer formula to calculate workpiece extexine average grain size.
Claims (1)
1. a Q235 carbon structural steels shaft-like workpiece surface nanometer layer preparation method, is characterized in that, comprises the following steps:
(1) be circle shaft-like workpiece, surface roughness≤12.5 μ m by the Vehicle Processing of commercial Q235 round steel;
(2) the circular shaft shape surface of the work after step 1 processing is carried out to acetone cleaning;
(3) the circular arc end face of the round shaft-like workpiece after step 2 is cleared up contacts with the discoid applicator circular-arc bottom face of ultrasonic wave;
(4) start Surface Nanocrystalline device, under pressure 0.50 ~ 0.55MPa, ultrasonic power output 2800 ~ 3000W, frequency 20KHz, amplitude 35 ~ 40 μ m, workpiece rotational line speed 5.0 ~ 5.7mm/s and straight line moving speed 3.1 ~ 21mm/min standard parameter, workpiece is carried out to Surface Nanocrystalline, can obtain the workpiece of making Nano surface.
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| CN201410292365.6A CN104044018A (en) | 2014-06-26 | 2014-06-26 | Surface nanometer layer preparing method for Q235 carbon structural steel shaft type work-piece |
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| CN201410292365.6A CN104044018A (en) | 2014-06-26 | 2014-06-26 | Surface nanometer layer preparing method for Q235 carbon structural steel shaft type work-piece |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419077A (en) * | 2017-03-03 | 2017-12-01 | 西安理工大学 | A kind of preparation method of Nano surface of metal material gradient layer |
| CN107502721A (en) * | 2017-07-12 | 2017-12-22 | 华南理工大学 | A kind of preparation method of high-strength, high-toughness stainless steel |
| CN109047958A (en) * | 2018-08-31 | 2018-12-21 | 厦门大学 | A kind of method that Wire EDM prepares super-hydrophobic metal surface |
| CN115161451A (en) * | 2021-04-06 | 2022-10-11 | Oppo广东移动通信有限公司 | Rotating shaft, surface treatment equipment and surface treatment method thereof, and electronic equipment |
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| CN1410560A (en) * | 2001-09-29 | 2003-04-16 | 中国科学院金属研究所 | Method of making nano surface of metallic material using ultrasonic speed micro particle bombardment |
| EP1577401A1 (en) * | 2002-11-19 | 2005-09-21 | Nippon Steel Corporation | Method of manufacturing metal product having nano-crystallized surface layer part |
| CN1911596A (en) * | 2006-08-15 | 2007-02-14 | 天津大学 | Processing method and equipment of metal material surface nanometer layer |
| CN101220405A (en) * | 2007-10-10 | 2008-07-16 | 天津大学 | Ultrasonic surface rolling process nanoparticlization method and apparatus |
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2014
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Patent Citations (4)
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| CN1410560A (en) * | 2001-09-29 | 2003-04-16 | 中国科学院金属研究所 | Method of making nano surface of metallic material using ultrasonic speed micro particle bombardment |
| EP1577401A1 (en) * | 2002-11-19 | 2005-09-21 | Nippon Steel Corporation | Method of manufacturing metal product having nano-crystallized surface layer part |
| CN1911596A (en) * | 2006-08-15 | 2007-02-14 | 天津大学 | Processing method and equipment of metal material surface nanometer layer |
| CN101220405A (en) * | 2007-10-10 | 2008-07-16 | 天津大学 | Ultrasonic surface rolling process nanoparticlization method and apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419077A (en) * | 2017-03-03 | 2017-12-01 | 西安理工大学 | A kind of preparation method of Nano surface of metal material gradient layer |
| CN107502721A (en) * | 2017-07-12 | 2017-12-22 | 华南理工大学 | A kind of preparation method of high-strength, high-toughness stainless steel |
| CN109047958A (en) * | 2018-08-31 | 2018-12-21 | 厦门大学 | A kind of method that Wire EDM prepares super-hydrophobic metal surface |
| CN115161451A (en) * | 2021-04-06 | 2022-10-11 | Oppo广东移动通信有限公司 | Rotating shaft, surface treatment equipment and surface treatment method thereof, and electronic equipment |
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Application publication date: 20140917 |