CN101792905A - Method for performing longitude and latitude alloying strengthening process on metal surface layer by utilizing plasma - Google Patents
Method for performing longitude and latitude alloying strengthening process on metal surface layer by utilizing plasma Download PDFInfo
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- CN101792905A CN101792905A CN 201010117199 CN201010117199A CN101792905A CN 101792905 A CN101792905 A CN 101792905A CN 201010117199 CN201010117199 CN 201010117199 CN 201010117199 A CN201010117199 A CN 201010117199A CN 101792905 A CN101792905 A CN 101792905A
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Abstract
The invention relates to a method for performing longitude and latitude alloying strengthening process on metal surface layer by utilizing plasma. The method comprises the following steps: performing cleaning pretreatment on surface of a metal workpiece; conveying alloy powder on the surface of the workpiece and regulating the distance between the workpiece and the plasma; placing the workpiece on a work platform, scanning the surface of the workpiece by utilizing plasma with the power density of 105-106w/cm <2> in a set scan direction and at a set scan speed; parallel moving the plasma or the work platform, scanning in the mode until the longitude scan is finished; scanning the workpiece for times at an angle of 45-90 degrees relative to the original scan direction and forming an alloying area of the longitude and latitude structure; and performing accurate grinding process on the surface of the workpiece and ensuring that the workpiece achieves the required surface roughness. The manufactured metal workpiece has a structure of the alloying area, alloying remelting area, a solid-state phase change area and an original area which are alternately interphase, thereby forming fine, tough and complementary mechanical property on the surface of the workpiece, and improving the wear-resisting property of the material greatly.
Description
Technical field
The invention belongs to the beam-plasma manufacture field, relate to a kind of method of metal material surface being handled by beam-plasma, particularly a kind of beam-plasma that utilizes carries out longitude and latitude alloying strengthening treatment process to metal surface.
Background technology
By beam-plasma metal material surface is handled,, become better material surface working mode to improve wear resistance, erosion resistance and the anti-fatigue performance on surface.Its equipment is simple, reliability of technology is high; Satisfy under the condition of energy density of surface strengthening industrial application, the power of plasma beam, energy utilization efficiency are than the laser beam height, so it strengthens working (machining) efficiency than laser beam height, energy-conservation; Thereby it makes workpiece obtain better machining effect.
Similar to laser surface treating technology, be thermal source with the beam-plasma, also can realize transformation hardening, cladding and the alloying etc. of workpiece surface.They all are to be thermal source with the beam-plasma, the metallic surface is heated to phase transformation, temperature of fusion take place, after beam-plasma is removed or is failed, because the conductive force of metallic matrix, cool off fast the beam-plasma zone of action, thereby obtain saturated solid solution, the steady phase that is situated between, even obtain amorphous, reach the purpose that improves workpiece surface over-all properties or certain performance.If in the beam-plasma effect, send into the powdered alloy of specific proportioning, or at the powdered alloy of the specific proportioning of material surface precoating layer, by the rapid heating of beam-plasma and quick cooling effect subsequently, different with the body material composition with forming, performance surmounts the alloying zone of matrix limiting performance.
When adopting beam-plasma material surface to be done the modification processing as heating source, one of subject matter that faces is: for big area covers workpiece surface, must handle in the mode of continuous sweep overlap joint, and very easily form temper softening and tiny crack at overlap, when multi-track overlapping, form on the one hand the soft or hard band, i.e. temper softening district and plasma cure district, tiny crack traverses the scanning road and forms long crack on the other hand.This is that the major reason that thermal source big area intensifying technology enters large-scale industrial application is forced in restriction.
Chinese patent CN 1831195A discloses " a kind of distribution type laser spot alloying method " and has adopted spot formula alloying, spot alloying is the semi-round ball alloying hardened zone that successive does not distribute in the alloying district, its objective is that overcoming continuous overlap joint scans problems such as caused temper softening and crackle tendency is serious, simultaneously also solve the texturing technology and only obtained certain surface topography, and can not carry out the highly malleablized processing of the degree of depth to the surface that is processed, therefore just can not increase substantially the problem in the work-ing life of workpiece.
Summary of the invention
Purpose of the present invention very easily forms temper softening and tiny crack in order to overcome the overlap that exists when present technology utilizes beam-plasma in the mode of continuous sweep overlap joint material surface to be done the modification processing as heating source, the shortcoming and the Chinese patent CN 1831195A that form soft or hard band and long crack during multi-track overlapping can not carry out the highly malleablized handling problem of the degree of depth to the surface that is processed, and provide a kind of beam-plasma that utilizes that metal surface is carried out longitude and latitude alloying strengthening treatment process, present method overcomes continuous overlap joint and scans problems such as caused temper softening and crackle tendency is serious, and increase substantially work-ing life of workpiece, but spot alloying is the semi-round ball alloying hardened zone that successive does not distribute in the alloying district, metal surface after the inventive method is handled forms is that the alloying strengthening district of longitude and latitude structure surrounds the solid-state phase changes district and the region of initiation in alloying district not in the lattice, implement more aspect, strengthening effect is better.
Purpose of the present invention can realize by following technical proposals:
A kind of beam-plasma that utilizes carries out longitude and latitude alloying strengthening treatment process to metal surface, it is characterized in that carrying out according to the following steps:
(1) with organic solvent cleaning pretreatment is carried out on the metal works surface; (2) alloy powder is mixed well the matrix surface of brushing or being sprayed on metal works with caking agent, perhaps,, by powder feeder alloy powder is delivered to the matrix surface of metal works, and regulate the distance between metal works and the beam-plasma the alloy powder powder feeder of packing into; (3) metal works is placed on the worktable, be about 10 with power density
5-10
6W/cm
2Plasma beam by scanning direction of setting and sweep velocity scanning metal works surface, then that beam-plasma or worktable is parallel mobile, so being scanned up to warp-wise scanning finishes, successively metal works is scanned several to be 45 ° of-90 ° of angles then, form the alloying zone of longitude and latitude structure with original scanning direction; (4) will finish grind processing through the surface of the metal works of above-mentioned processing, and make it reach desired surfaceness.
Described organic solvent is dehydrated alcohol, acetone or gasoline.Described caking agent adopts conventional caking agent.
Be parallel to each other between respectively the scanning of described warp or broadwise and equidistantly, warp-wise scanning road and broadwise scanning road are 45 ° of-90 ° of angles, together, metal works surface formation alloying reflow zone, alloying district, heat affected zone, region of initiation interweaved before the road covered behind the intersection point place.
The width D scope in described beam-plasma alloying zone is: 0.2mm≤D≤5mm; The central point distance W scope in warp or adjacent two the ionic fluid alloying districts of broadwise is: 0.4mm≤W≤10mm.
The present invention compared with prior art, have the following advantages and the high-lighting effect: utilize beam-plasma on warp, latitude both direction, to scan in the metallic surface, form the alloying zone of longitude and latitude structure, it is alloying remelting zone that workpiece surface is formed with the joining, non-joining scanning road is the alloying zone, the scanning zone that the road enclosed is that the gridding of heat affected zone is divided, thereby reduced the stress accumulation of big area continuous sweep overlap joint, overcome the overlap temper softening problem that the scanning bridging method causes; Meanwhile, the longitude and latitude structure that is made of alloying zone, alloying remelting zone and heat affected zone interleaved makes workpiece surface form fine and closely woven tough complementary mechanical property, has improved the wear resisting property of material greatly.
The present invention is that the continuous 3D grid with alloy strengthening surrounds isolated region of initiation, can realize that the highly malleablized of the degree of depth is handled, and can increase substantially the work-ing life of workpiece, and strengthening effect is higher than distribution type laser spot alloying method.The enforcement efficient of this plasma alloying also is higher than distribution type laser spot alloying method simultaneously.
Description of drawings
Fig. 1 is the cross sectional representation of plasma scanning area.
Fig. 2 a, Fig. 2 b are surperficial longitude and latitude structural alloy district synoptic diagram.
Fig. 3 knits the alloying synoptic diagram for the longitude and latitude oblique
Among the figure: 1-alloying district, 2-solid-state phase changes district, 3-matrix, D-pool width, H-pool depth, the central point distance in W-warp or adjacent two the ionic fluid alloying districts of broadwise.
Embodiment
The invention will be further described in conjunction with the accompanying drawings.
At first use the grease and the corrosion of organic solvent clean metal workpiece surface, described organic solvent comprises dehydrated alcohol, acetone or gasoline; For the surface heavy smeary situation is arranged, available gasoline soaks oil removing, for the surface that serious corrosion is arranged, and available dilute hydrochloric acid rust cleaning, or with rust cleaning again after the abrasive paper for metallograph polishing, until surface-brightening, no rusty stain; Again according to the applying working condition alloyage powder of body material and workpiece; Alloy powder mixed well with caking agent brush or be sprayed on the metal works surface or, alloy powder is delivered to the metal works surface by powder feeder with the alloy powder powder feeder of packing into; Powder feeder adopts existing.Metal works is placed on the worktable, is 10 with power density
5-10
7W/cm
2Beam-plasma scan flow workpiece surface, move a certain distance worktable is parallel then, so scan several, be 45 ° of-90 ° of angles with original scanning direction afterwards and successively metal works scanned several, form the alloying zone of gridding; After the plasma light beam quit work, it was alloying secondary remelting zone that workpiece surface forms with the joining, and non-joining scanning road is the alloying zone, and the scanning zone that the road enclosed is the longitude and latitude structure of heat affected zone; To finish grind processing through the surface of the metal works of above-mentioned processing, and make it reach desired surfaceness.
Embodiment 1: the present invention is used to strengthen roll:
(1) with gasoline, alcohol or acetone and other organic solvent cleaning roll workpiece surface, until surface-brightening, no rusty stain;
(2) powdered alloy is mixed well with binding agent be made into alloy powder coating, and evenly be coated in the roll workpiece surface;
(3) the roll workpiece is placed on the worktable, and the distance between adjusting roll workpiece and the beam-plasma;
(4) open plasma alloying equipment, the direction of regulating beam-plasma makes it perpendicular to the processing roll workpiece surface, and regulates the sweep velocity of beam-plasma, is 10 with power density
5-10
6W/cm
2Beam-plasma scanning processing roll workpiece surface, so parallel sweep several, reach 90 degree with the angle of adjusting workpiece then, be 10 with power density again
5-10
6W/cm
2Beam-plasma scanning processing roll workpiece surface, so parallel sweep several, make the roll workpiece surface form longitude and latitude structural alloy zone;
(5) the breaker roll workpiece surface finish grindes processing, makes it reach desired surfaceness.
Embodiment 2: the present invention is used to strengthen mould:
(1) with gasoline, alcohol or acetone and other organic solvent cleaning mold working-surface, until surface-brightening, no rusty stain;
(2), alloy powder is delivered to the working-surface of metal die by powder feeder with the alloy powder powder feeder of packing into of preparation;
(3) mould is placed on the worktable, and the distance between adjusting die surface and the beam-plasma;
(4) open plasma alloying equipment, the direction of regulating beam-plasma makes it perpendicular to the processing mold working-surface, and regulates the sweep velocity of beam-plasma, is 10 with power density
5-10
6W/cm
2Beam-plasma scanning processing mold spare surface, so parallel sweep several, reach 90 degree with the angle of adjusting workpiece then, be 10 with power density again
5-10
6W/cm
2Beam-plasma scanning processing mold workpiece surface, so parallel sweep several, make the mold work surface form longitude and latitude structural alloy zone;
(5) processing is finish grinded on the mold work surface, make it reach desired surfaceness.
Claims (4)
1. one kind is utilized beam-plasma that metal surface is carried out longitude and latitude alloying strengthening treatment process, it is characterized in that carrying out according to the following steps:
(1) with organic solvent cleaning pretreatment is carried out on the metal works surface; (2) alloy powder is mixed well the matrix surface of brushing or being sprayed on metal works with caking agent, perhaps,, by powder feeder alloy powder is delivered to the matrix surface of metal works, and regulate the distance between metal works and the beam-plasma the alloy powder powder feeder of packing into; (3) metal works being placed on the worktable, is 10 with power density
5-10
6W/cm
2Plasma beam by scanning direction of setting and sweep velocity scanning metal works surface, then that beam-plasma or worktable is parallel mobile, so being scanned up to warp-wise scanning finishes, successively metal works is scanned several to be 45 ° of-90 ° of angles then, form the alloying zone of longitude and latitude structure with original scanning direction; (4) will finish grind processing through the surface of the metal works of above-mentioned processing, and make it reach desired surfaceness.
2. the beam-plasma that utilizes according to claim 1 carries out longitude and latitude alloying strengthening treatment process to metal surface, and it is characterized in that: described organic solvent is dehydrated alcohol, acetone or gasoline.
3. the beam-plasma that utilizes according to claim 1 carries out longitude and latitude alloying strengthening treatment process to metal surface, it is characterized in that: be parallel to each other between respectively the scanning of described warp or broadwise and equidistantly, warp-wise scanning road and broadwise scanning road are 45 ° of-90 ° of angles, together, metal works surface formation alloying reflow zone, alloying district, heat affected zone, region of initiation interweaved before the road covered behind the intersection point place.
4. the beam-plasma that utilizes according to claim 3 carries out longitude and latitude alloying strengthening treatment process to metal surface, and its width D scope of described beam-plasma alloying zone is: 0.2mm≤D≤5mm; The central point distance W scope in warp or adjacent two the ionic fluid alloying districts of broadwise is: 0.4mm≤W≤10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010117199 CN101792905A (en) | 2010-03-02 | 2010-03-02 | Method for performing longitude and latitude alloying strengthening process on metal surface layer by utilizing plasma |
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|---|---|---|---|
| CN 201010117199 CN101792905A (en) | 2010-03-02 | 2010-03-02 | Method for performing longitude and latitude alloying strengthening process on metal surface layer by utilizing plasma |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341695A (en) * | 2013-06-27 | 2013-10-09 | 西安交通大学 | Method for improving mechanical property of hardened and tempered low-alloy high-strength steel GMAW connector |
| CN105324182A (en) * | 2013-04-18 | 2016-02-10 | Dm3D技术有限责任公司 | Laser assisted interstitial alloying for improved wear resistance |
| CN105350031A (en) * | 2015-11-20 | 2016-02-24 | 武汉科技大学城市学院 | Plasma beam chromium plating technology for piston rod of hydraulic prop |
| CN112475316A (en) * | 2020-11-05 | 2021-03-12 | 上海云铸三维科技有限公司 | Composite reinforced laser melting scanning method |
| CN114059064A (en) * | 2021-11-17 | 2022-02-18 | 江西科技师范大学 | Method for inhibiting cracking of alloy coating during high-energy beam roller repairing by using texturing method |
| CN114535857A (en) * | 2022-03-22 | 2022-05-27 | 惠州市隆合科技有限公司 | Welding structure and welding method for foil and cover plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405355A (en) * | 2001-08-04 | 2003-03-26 | 山东科技大学机械电子工程学院 | Method for depositing paint-coat of metal surface, especially for gradient paint-coat |
| CN1831195A (en) * | 2006-04-14 | 2006-09-13 | 清华大学 | Distribution type laser spot alloying method |
-
2010
- 2010-03-02 CN CN 201010117199 patent/CN101792905A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405355A (en) * | 2001-08-04 | 2003-03-26 | 山东科技大学机械电子工程学院 | Method for depositing paint-coat of metal surface, especially for gradient paint-coat |
| CN1831195A (en) * | 2006-04-14 | 2006-09-13 | 清华大学 | Distribution type laser spot alloying method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105324182A (en) * | 2013-04-18 | 2016-02-10 | Dm3D技术有限责任公司 | Laser assisted interstitial alloying for improved wear resistance |
| CN105324182B (en) * | 2013-04-18 | 2018-03-02 | Dm3D技术有限责任公司 | Laser assisted interstitial alloy for improve wearability |
| CN103341695A (en) * | 2013-06-27 | 2013-10-09 | 西安交通大学 | Method for improving mechanical property of hardened and tempered low-alloy high-strength steel GMAW connector |
| CN105350031A (en) * | 2015-11-20 | 2016-02-24 | 武汉科技大学城市学院 | Plasma beam chromium plating technology for piston rod of hydraulic prop |
| CN105350031B (en) * | 2015-11-20 | 2018-01-12 | 武汉科技大学城市学院 | The beam-plasma chrome-plated process of hydraulic prop piston bar |
| CN112475316A (en) * | 2020-11-05 | 2021-03-12 | 上海云铸三维科技有限公司 | Composite reinforced laser melting scanning method |
| CN114059064A (en) * | 2021-11-17 | 2022-02-18 | 江西科技师范大学 | Method for inhibiting cracking of alloy coating during high-energy beam roller repairing by using texturing method |
| CN114535857A (en) * | 2022-03-22 | 2022-05-27 | 惠州市隆合科技有限公司 | Welding structure and welding method for foil and cover plate |
| CN114535857B (en) * | 2022-03-22 | 2023-12-29 | 惠州市隆合科技有限公司 | Welding structure and welding method for foil and cover plate |
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Open date: 20100804 |