CN108330486B - Laser cladding nano powder heating-assisted pressing method - Google Patents
Laser cladding nano powder heating-assisted pressing method Download PDFInfo
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- CN108330486B CN108330486B CN201810442593.5A CN201810442593A CN108330486B CN 108330486 B CN108330486 B CN 108330486B CN 201810442593 A CN201810442593 A CN 201810442593A CN 108330486 B CN108330486 B CN 108330486B
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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
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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Abstract
The invention provides a laser cladding nano powder heating auxiliary pressing method which comprises the steps of using a pressing device, a sliding rail, a bottom film and an induction heating coil, wherein the bottom film is fixed on the sliding rail and moves back and forth on a rail of the sliding rail; the method comprises the following steps: step 10, fixedly arranging the basement membrane on the slide rail; step 20, placing the workpiece in a pressing groove of a bottom film, and pouring the uniformly stirred nano powder on the upper surface of the workpiece; step 30, starting an induction heating coil to keep the nano powder dry; step 40, adjusting the pressing device to press the nano powder; step 50, closing the induction heating coil; and step 60, moving the base film on which the nano powder and the workpiece are placed to a laser cladding point through a slide rail to prepare for laser cladding.
Description
Technical Field
The invention relates to the technical field of surface engineering, in particular to a laser cladding nano powder heating-assisted pressing method.
Background
The powder pressing technology is widely applied to the fields of laser cladding by a preset method, sample detection and analysis and the like. Putting the dried or ground powder and a proper amount of additives into a pressing die, and applying pressure to the powder to obtain the required sample tablet.
Nanostructured materials are materials that have geometric dimensions on the order of nanometers and exhibit mechanical and physicochemical properties that are distinct from those of conventional structural materials. The coating is prepared by utilizing the superiority of the nano-structure material, and a new research direction is provided for the material surface treatment technology. At present, pure nano ceramic powder, mixed powder of metal and nano ceramic, or other coated powder. The commonly used metal powder is mainly Ni base, Co base, Fe base and the like; the nano ceramic powder mainly comprises nano WC, nano SiC and nano Al2O3Nano ZrO 22And nano TiO2And the like. Nanostructured ceramicsThe main preparation methods of the coating at present comprise sol-gel, physical vapor deposition, chemical vapor deposition, electroplating, laser cladding, thermal spraying and the like. The laser cladding uses a rapid solidification method, and adopts a nano material to construct a nano structure or a nano modified surface composite coating completely or partially, so that the method has a huge development prospect in the preparation of the nano ceramic coating. The nano-powder has the powder granularity reduced to nano-scale and has special properties which are not possessed by common powder materials, so that the nano-powder attracts the attention of researchers, and the nano-ceramic powder is taken as a main material, and the nano-ceramic composite coating prepared on the surface of the metal alloy by utilizing laser cladding shows the advantages of the combination of the nano-effect of the nano-material and the laser process, but has a series of problems.
The application defects of the existing nano powder are as follows: because the nano powder is fine, if a synchronous powder feeding technology is selected in the laser cladding process, the nano powder is easy to agglomerate to block a spray head; and the nanometer powder is easy to gasify and splash, and the coating is easy to generate the problems of cavities, cracks, peeling and the like. The combined action of these factors makes the nanostructure coating prepared by laser cladding pure nanopowder not reach the expected effect.
Therefore, the invention improves a series of problems of applying the nano powder to laser cladding by preparing the nano powder pressing body, and further can improve the performance of the prepared nano structure coating.
Disclosure of Invention
The invention aims to solve the technical problem of providing a laser cladding nano powder heating auxiliary pressing device and method.
The invention is realized by the following steps:
the utility model provides a supplementary suppression device of laser cladding's nanometer powder heating, includes presser, slide rail, basement membrane and induction heating coil, the basement membrane is fixed on the slide rail and back and forth movement on the track of slide rail, be equipped with the suppression groove on the basement membrane, the work piece is placed in the suppression groove, induction coil encircles the nanometer powder setting of placing on the work piece, the presser suppresses nanometer powder.
Preferably, the workpiece, the pressing groove and the pressing head of the presser are equal in size.
Preferably, the inner wall of the pressing groove is provided with scales, and the scales are used for calculating the thickness and the density of the pressed nano powder.
Preferably, the depth of the pressing groove is greater than the height of the workpiece plus the nanopowder.
Preferably, the anti-skid device further comprises an anti-skid pad, wherein the anti-skid pad keeps the sliding rail stable.
The invention specifically comprises the following steps:
a laser cladding nano powder heating auxiliary pressing method comprises the steps that a pressing device, a sliding rail, a bottom film and an induction heating coil are used, the bottom film is fixed on the sliding rail and moves back and forth on a rail of the sliding rail, a pressing groove is formed in the bottom film, a workpiece is placed in the pressing groove, the induction coil is arranged around nano powder placed on the workpiece, and the pressing device presses the nano powder;
the method comprises the following steps:
step 10, preparing required nano powder, manually grinding and uniformly stirring; fixedly arranging the bottom film on the slide rail;
step 20, placing the workpiece in a pressing groove of a bottom film, and pouring the uniformly stirred nano powder on the upper surface of the workpiece; moving the basement membrane to the pressing position of the pressing device through a sliding rail;
step 30, starting an induction heating coil to keep the nano powder dry;
step 40, adjusting the pressing device, and pressing the nano powder placed on the workpiece in the pressing groove;
step 50, closing the induction heating coil;
and step 60, moving the base film on which the nano powder and the workpiece are placed to a laser cladding point through a slide rail to prepare for laser cladding.
Preferably, the workpiece, the pressing groove and the pressing head of the presser are equal in size.
Preferably, the inner wall of the pressing groove is provided with scales, and the scales are used for calculating the thickness and the density of the pressed nano powder.
Preferably, the depth of the pressing groove is greater than the height of the workpiece plus the nanopowder.
Preferably, the nanopowder is an encapsulated nanopowder comprising: pure nano ceramic powder and mixed powder of metal powder and nano ceramic.
The invention has the following advantages:
1. according to the invention, the nanometer powder required by laser cladding is firstly pressed on the workpiece to form the preset layer, then the workpiece is subjected to laser cladding, and the problem that the nanometer powder is easy to gasify and splash is solved by the pressed nanometer powder preset layer.
2. Through increasing induction heating coil, dry nanometer powder, solve the problem that nanometer powder agglomerates to improve the suppression degree of consistency and the shaping effect of suppression nanometer powder.
3. The method directly presses the nano powder required by laser cladding without adding an adhesive, reduces impurities of a preset layer, enables a cladding layer finished by laser cladding to be smoother and not easy to generate holes and cracks, and enables the cladding layer not easy to peel off and to be used for a longer time.
4. By arranging scales on the pressed film, the pressed thickness of the nano powder can be adjusted according to actual conditions, and the pressed density of the nano powder can be further calculated and adjusted.
5. The workpiece and the nano powder are conveyed through the slide rail, so that cracks of a powder pressing body caused by excessive vibration are reduced, and the laser cladding effect is influenced.
6. The invention has the advantages of wide application range, high powder utilization rate, low cost, simple process, simple and convenient control, uniform formed pressed powder, controllable thickness and density and the like.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a flow chart of the present invention.
The symbols are as follows:
a slide rail 1; a base film 2; pressing a groove 3; 4, nano powder; a workpiece 5.
Detailed Description
The utility model provides a supplementary suppression device of laser cladding's nanometer powder heating, includes presser, slide rail 1, basement membrane 2, slipmat and induction heating coil, basement membrane 2 is fixed on slide rail 1 and on the track of slide rail 1 back and forth movement, be equipped with suppression groove 3 on basement membrane 2, work piece 5 is placed in suppression groove 3, induction coil encircles the setting of nanometer powder 4 of placing on work piece 5, the presser suppresses nanometer powder 4, the suppression head size of work piece 5, suppression groove 3 and presser equals, the supporting use of the suppression head of work piece 5, suppression groove 3 and presser; scales are arranged on the inner wall of the pressing groove 3 and used for calculating the thickness and the density of the nano powder 4; the depth of the pressing groove 3 is greater than the height of the workpiece 5 and the nano powder 4; the non-slip mat keeps the slide rail 1 stable.
A pressing device: for pressing the nanopowder 4;
slide rail 1: fixing the bottom film 2 and enabling the bottom film 2 to stably move back and forth on the slide rail 1, wherein the slide rail 1 needs to be kept stable when the nano powder 4 is pressed;
a bottom film 2: a pressing groove 3 is arranged, and workpieces 5 with the same size and different heights are placed in the pressing groove 3;
non-slip mat: stabilizing the slide rail 1;
induction heating coil: the nanopowder 4 is kept dry by heating.
A laser cladding nano powder heating auxiliary pressing method comprises the steps that a pressing device, a sliding rail 1, a bottom film 2 and an induction heating coil are used, the bottom film 2 is fixed on the sliding rail 1 and moves back and forth on a rail of the sliding rail 1, a pressing groove 3 is formed in the bottom film 2, a workpiece 5 is placed in the pressing groove 3, the induction coil is arranged around a nano powder 4 placed on the workpiece 5, and the pressing device presses the nano powder 4;
the method comprises the following steps:
step 10, preparing the required nano powder 4, manually grinding and uniformly stirring to ensure that the cladding layer nano powder 4 is uniformly distributed during laser cladding; fixedly arranging the bottom film 2 on the slide rail 1;
step 20, placing the workpiece 5 in the pressing groove 3 of the bottom film 2, and pouring the uniformly stirred nano powder 4 on the upper surface of the workpiece 5; moving the base film 2 to the pressing position of the press by a slide rail 1;
step 30, starting the induction heating coil to keep the nano powder 4 dry;
step 40, adjusting the pressing device, and pressing the nano powder 4 placed on the workpiece 5 in the pressing groove 3;
step 50, closing the induction heating coil;
and step 60, moving the base film 2 on which the nano powder 4 and the workpiece 5 are placed to a laser cladding point through the slide rail 1 to prepare for laser cladding.
According to the laser cladding nano powder heating auxiliary pressing method, the sizes of a workpiece 5, a pressing groove 3 and a pressing head of a pressing device are equal, and the matching use effect of the workpiece 5, the pressing groove 3 and the pressing head of the pressing device is optimal; scales are arranged on the inner wall of the pressing groove 3 and used for calculating the thickness and the density of the nano powder 4; the depth of the pressing groove 3 is greater than the sum height of the workpiece 5 and the nano powder 4, so that the nano powder 4 is fully pressed without being exposed; the nano powder 4 is a coated nano powder 4, and includes: pure nano ceramic powder and mixed powder of metal powder and nano ceramic.
Induction heating coil setting parameters: input voltage range: 340-: 100Kw, induction frequency: 30-50 kHz.
Setting parameters of a laser in a laser cladding process: the power (W) is 800-.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (4)
1. A laser cladding nano powder heating auxiliary pressing method comprises the use of a pressing device, and is characterized in that: the device comprises a slide rail, a bottom film and an induction heating coil, wherein the bottom film is fixed on the slide rail and moves back and forth on a track of the slide rail, a pressing groove is formed in the bottom film, a workpiece is placed in the pressing groove, the induction coil is arranged around the nano powder placed on the workpiece, the pressing device presses the nano powder, and the sizes of the workpiece, the pressing groove and a pressing head of the pressing device are equal;
the method comprises the following steps:
step 10, preparing required nano powder, manually grinding and uniformly stirring; fixedly arranging the bottom film on the slide rail;
step 20, placing the workpiece in a pressing groove of a bottom film, and pouring the uniformly stirred nano powder on the upper surface of the workpiece; moving the basement membrane to the pressing position of the pressing device through a sliding rail;
step 30, starting an induction heating coil to keep the nano powder dry;
step 40, adjusting the pressing device, and pressing the nano powder placed on the workpiece in the pressing groove;
step 50, closing the induction heating coil;
and step 60, moving the base film on which the nano powder and the workpiece are placed to a laser cladding point through a slide rail to prepare for laser cladding.
2. The laser-clad nanopowder heating-assisted pressing method of claim 1, wherein: and scales are arranged on the inner wall of the pressing groove and used for calculating the thickness and the density of the nano powder pressing.
3. The laser-clad nanopowder heating-assisted pressing method of claim 1, wherein: the depth of the pressing groove is larger than the height of the workpiece and the nano powder.
4. The laser-clad nanopowder heating-assisted pressing method of claim 1, wherein: the nano powder is coated nano powder, and comprises: pure nano ceramic powder and mixed powder of metal powder and nano ceramic.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442593.5A CN108330486B (en) | 2018-05-10 | 2018-05-10 | Laser cladding nano powder heating-assisted pressing method |
| PCT/CN2019/083832 WO2019214429A1 (en) | 2018-05-10 | 2019-04-23 | Laser cladding nanopowder heating assisted pressing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442593.5A CN108330486B (en) | 2018-05-10 | 2018-05-10 | Laser cladding nano powder heating-assisted pressing method |
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| Publication Number | Publication Date |
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| CN108330486A CN108330486A (en) | 2018-07-27 |
| CN108330486B true CN108330486B (en) | 2020-04-03 |
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| CN201810442593.5A Expired - Fee Related CN108330486B (en) | 2018-05-10 | 2018-05-10 | Laser cladding nano powder heating-assisted pressing method |
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| WO (1) | WO2019214429A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108330486B (en) * | 2018-05-10 | 2020-04-03 | 福建工程学院 | Laser cladding nano powder heating-assisted pressing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3539573A1 (en) * | 1985-11-08 | 1987-05-14 | Giulini Chemie | METHOD FOR PRODUCING THREE-DIMENSIONAL REINFORCEMENT PARTS FROM MELTABLE PLASTIC POWDER AND APPLYING THESE PARTS TO SUBSTRATES, ESPECIALLY LEATHER |
| JPH0236642B2 (en) * | 1986-02-14 | 1990-08-20 | Yoshinobu Kobayashi | CHOKOSHITSUZAINOPAIPUJOSEIHINNOSEIHO |
| CN2621860Y (en) * | 2003-06-20 | 2004-06-30 | 中国科学院沈阳自动化研究所 | Powder spreader |
| CN102839371B (en) * | 2012-09-21 | 2014-05-21 | 上海工程技术大学 | Device for accurately controlling thickness of laser fused preset powder layer |
| CN104550953B (en) * | 2014-12-17 | 2016-10-05 | 华南理工大学 | A kind of two-cylinder type desktop type selective laser melt-forming Apparatus and method for |
| CN204825051U (en) * | 2015-08-10 | 2015-12-02 | 黄山学院 | Improve magnesium alloy surfaces corrosion resisting property's device |
| CN105382251A (en) * | 2015-11-07 | 2016-03-09 | 大连理工大学 | Method for preparing laser cladding coating by consolidating and pre-arranging blended carbon nano-tubes and metal nano-powder |
| CN105386039B (en) * | 2015-11-13 | 2017-12-01 | 上海工程技术大学 | A kind of pressuring flat device for being used to adjust the preset powder layer thickness of laser melting coating |
| CN206127389U (en) * | 2016-11-07 | 2017-04-26 | 南昌专腾科技有限公司 | Carbon fiber reinforcement magnesium base combined material's preparation system |
| CN106493358B (en) * | 2016-11-07 | 2018-11-16 | 南昌专腾科技有限公司 | A kind of magnesium-based composite material, preparation system and method |
| CN106381489B (en) * | 2016-11-29 | 2019-02-26 | 中国矿业大学 | Laser melting coating extrusion coating preparation facilities and method |
| CN206692732U (en) * | 2017-03-28 | 2017-12-01 | 昆明理工大学 | A kind of compacting tool set for preparing laser melting coating preset coating |
| CN106989978B (en) * | 2017-04-10 | 2019-10-08 | 沈阳精新再制造有限公司 | A kind of combination die of laser melting coating part polishing |
| CN106929846A (en) * | 2017-04-22 | 2017-07-07 | 南京工程学院 | Laser cladding new A lFeCrCoNiTi alloy coats and preparation method thereof |
| CN108330486B (en) * | 2018-05-10 | 2020-04-03 | 福建工程学院 | Laser cladding nano powder heating-assisted pressing method |
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2018
- 2018-05-10 CN CN201810442593.5A patent/CN108330486B/en not_active Expired - Fee Related
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- 2019-04-23 WO PCT/CN2019/083832 patent/WO2019214429A1/en active Application Filing
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| CN108330486A (en) | 2018-07-27 |
| WO2019214429A1 (en) | 2019-11-14 |
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