CN110919016A - Method for preparing laser cladding powder by using stainless steel leftover material - Google Patents
Method for preparing laser cladding powder by using stainless steel leftover material Download PDFInfo
- Publication number
- CN110919016A CN110919016A CN201911327526.XA CN201911327526A CN110919016A CN 110919016 A CN110919016 A CN 110919016A CN 201911327526 A CN201911327526 A CN 201911327526A CN 110919016 A CN110919016 A CN 110919016A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- laser cladding
- powder
- cladding powder
- heating
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- 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
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a method for preparing laser cladding powder by using stainless steel leftover materials, which comprises the following steps: heating and smelting a preparation raw material containing stainless steel leftover material, wherein the preparation raw material comprises the stainless steel leftover material, industrial pure iron, a nickel plate, low-carbon chromium, high-carbon chromium, electrolytic manganese, ferrosilicon and ferroboron; and atomizing into powder after the components of the molten metal are uniform to prepare the laser cladding powder. The invention utilizes the stainless steel leftover material to directly serve as the important raw material of the metal powder to prepare the laser cladding powder, and has the advantages of saving cost, improving the utilization rate of the material, reducing environmental pollution, saving energy and the like.
Description
Technical Field
The invention belongs to the technical field of laser cladding, and particularly relates to a method for preparing laser cladding powder by using stainless steel scraps.
Background
The Laser Additive Manufacturing (LAM) technology is an additive manufacturing technology using laser as an energy source, the laser has the characteristic of high energy density, and can realize the manufacturing of metals which are difficult to machine, such as titanium alloy, high-temperature alloy and the like adopted in the aerospace field, meanwhile, the laser additive manufacturing technology also has the advantage of being not limited by the structure of parts, and can be used for the machining and manufacturing of parts with complex structures, difficult machining and thin walls.
Various raw materials used in the manufacturing process of metal powder for laser additive manufacturing, such as industrial pure iron, nickel plate, ferroboron, ferrosilicon and the like, are derived from various ores, and a large amount of waste water (acidic water) and waste gas (CO) containing pollutants are generated in the smelting process of the ores2And SO2) A large amount of electricity and water are consumed, so that environmental pollution and energy waste are caused.
Disclosure of Invention
In order to solve the above problems, a method for preparing laser cladding powder using stainless steel scrap has been proposed.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for preparing laser cladding powder by using stainless steel leftover materials comprises the following steps:
heating and smelting a preparation raw material containing stainless steel leftover material, wherein the preparation raw material comprises the stainless steel leftover material, industrial pure iron, a nickel plate, low-carbon chromium, high-carbon chromium, electrolytic manganese, ferrosilicon and ferroboron;
and atomizing into powder after the components of the molten metal are uniform to prepare the laser cladding powder.
Furthermore, in the preparation raw materials, the adding weight ratio of the stainless steel leftover material to other raw materials is 1: 1.
Further, the heating and smelting temperature is 1550-.
Further, heating and smelting the preparation raw materials containing the stainless steel leftover materials specifically comprise: adding industrial pure iron, stainless steel leftover materials, nickel plates, low-carbon chromium, high-carbon chromium and electrolytic manganese, heating, adding ferrosilicon and ferroboron after the set heating and smelting temperature is reached, and keeping the heating and smelting temperature until the raw materials are completely molten.
Further, after the heating smelting is started, the temperature is raised to the preset smelting temperature for 1-1.5 hours, and the smelting temperature is kept for 0.5-1 hour.
Further, the prepared laser cladding powder comprises the following components in parts by weight: c is 0.05-0.15; 1.5-2 parts of Mo; b is 0.5 to 1; 15.5-17.0 parts of Cr; 3.5 to 4.5 percent of Ni; mn 0.3-0.7; 0.8 to 1.3 portions of Si; the balance of Fe.
Further, before the heating and melting, the components of the used stainless steel scrap were measured in advance, and the respective addition ratios of the raw materials other than the stainless steel scrap in the raw materials for production were calculated based on the laser cladding powder components.
Further, an atomizing nozzle having a diameter of 6mm was selected, and the atomizing pressure was set at 12 MPa.
Further, after being atomized into powder, the powder is sieved to obtain metal powder with the particle size of 120-300 meshes as laser cladding powder.
The invention has the beneficial effects that:
(1) compared with the prior powder preparation process, the laser cladding powder prepared by using the stainless steel leftover material effectively reduces the raw material cost.
(2) After the stainless steel leftover materials are directly used as important raw materials of metal powder, the utilization rate of the materials can be improved, the environmental pollution is reduced, and the energy is saved.
Drawings
Fig. 1 is a scanning electron microscope image of laser cladding powder in embodiment 1 of the present invention;
fig. 2 is a performance test table of laser cladding powder in embodiment 1 of the present invention;
fig. 3 is a rockwell hardness test table of a laser cladding layer prepared by laser cladding the powder in embodiment 1 of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
The invention provides a method for preparing laser cladding powder by using stainless steel leftover materials, which comprises the following steps:
s1: preparation of raw materials: the components of the used stainless steel scraps are measured by an energy spectrometer, the respective addition proportion of other raw materials except the stainless steel scraps in the prepared raw materials is calculated based on the components of laser cladding powder, and the prepared raw materials comprise the stainless steel scraps, industrial pure iron, a nickel plate, low-carbon chromium, high-carbon chromium, electrolytic manganese, ferrosilicon and ferroboron.
Preferably, the weight ratio of the stainless steel leftover material to other raw materials is 1:1, so that the weight ratio of each component of the obtained laser cladding powder meets the design range of the laser powder.
S2: heating and smelting: according to the degree of easy oxidation and burning loss, the preparation raw material containing the stainless steel leftover material is heated and smelted, namely, industrial pure iron, the stainless steel leftover material, a nickel plate, low-carbon chromium, high-carbon chromium and electrolytic manganese are sequentially added, the heating and smelting temperature is set to 1550 ℃ and 1600 ℃, the heating and smelting starts, the temperature rises to reach the preset smelting temperature within 1-1.5 hours, ferrosilicon and ferroboron are added after the preset heating and smelting temperature is reached, and the heating and smelting temperature is kept for 0.5-1 hours until the raw material is completely molten.
S3: after the components of the molten metal are uniform, an atomizing nozzle with the diameter of 6mm is selected, the atomizing pressure is set to be 12Mpa, and after the molten metal is atomized into powder, the powder is screened to obtain metal powder with the particle size of 120-300 meshes as laser cladding powder. The obtained laser cladding powder comprises the following components in parts by weight: c is 0.05-0.15; 1.5-2 parts of Mo; b is 0.5 to 1; 15.5-17.0 parts of Cr; 3.5 to 4.5 percent of Ni; mn 0.3-0.7; 0.8 to 1.3 portions of Si; the balance of Fe.
The above embodiment is further illustrated by specific example 1:
a method for preparing laser cladding powder by utilizing stainless steel leftover materials comprises the following specific steps:
1. preparation of raw materials: and measuring the components of the used stainless steel scrap by using an energy spectrometer, and calculating the respective addition proportion of other raw materials except the stainless steel scrap in the prepared raw materials based on the components of the laser cladding powder. In this embodiment, the raw materials for preparation include industrial pure iron, 50% (by weight) stainless steel scrap, nickel plate, low-carbon chromium, high-carbon chromium, electrolytic manganese, ferromolybdenum, ferrosilicon, ferroboron, and the like, and the weight ratio of the stainless steel scrap to other raw materials is ensured to be 1: 1.
2. Heating and smelting: according to the degree of easy oxidation and burning loss, industrial pure iron, 50 percent (by weight percent) of stainless steel leftover materials, nickel plates, low-carbon chromium, high-carbon chromium, electrolytic manganese and ferromolybdenum are added in sequence, and the smelting temperature is set to be 1600 ℃. Heating and smelting, heating for about 1.5 hours to reach a set temperature value, dissolving metal, starting stirring, and removing residues; adding ferrosilicon and ferroboron, keeping the temperature and stirring for about 0.5 hour to make the components of the metal solution uniform, and then preparing for atomization.
3. Atomizing: adjusting the atomization pressure to about 12Mpa, and designing the nozzle with the diameter of 6mm to obtain metal powder with the particle size of 120 meshes and 300 meshes as much as possible; detecting the components of the metal powder, wherein the components meet the design, and the design range of the components of the metal powder is that C is 0.05-0.15; 15.5-17.0 parts of Cr; 3.5 to 4.5 percent of Ni; mn 0.3-0.7; b is 0.5 to 1.0; 0.8 to 1.2 portions of Si; and (4) screening the metal powder, collecting and obtaining the metal powder with the granularity of 120-300 meshes, namely laser cladding powder, and packaging and sealing.
4. The application comprises the following steps: and preparing the laser cladding layer by using the laser cladding powder.
And (3) carrying out performance test on the laser cladding powder, wherein the detection content and the test result are as follows:
as shown in fig. 1, the surface morphology of the laser cladding powder particles is scanned by a scanning electron microscope, which shows that the shape of the laser cladding powder is approximately spherical and the powder shape is relatively uniform after being observed by the scanning electron microscope with the magnification of 100 times.
As shown in fig. 2, the fluidity data of the laser cladding powder shows that the laser cladding powder has good solid fluidity, which is convenient for preparing a smooth cladding layer. The apparent density data of the laser cladding powder shows that the obtained laser cladding powder has good loose density, the stability of the powder metallurgy production process is ensured, and the quality of the product is further ensured.
The performance test of the prepared cladding layer reaches the following indexes:
96h copper ion accelerated acetate spray test shows that the alloy is rustless, and the corrosion resistance of the cladding layer is rated as 9 grades according to the national standard GB _ T6461-2002; the cladding layer is detected by a Rockwell portable hardness tester, the detection point is an arc surface, the measured hardness data of the cladding layer is shown in figure 3, the average hardness of the cladding layer reaches more than 50HRC, and the cladding layer prepared by the embodiment has good hardness and wear resistance; and the cladding layer has no crack through nondestructive testing.
In conclusion, the laser cladding powder obtained by the method meets the technical requirements of powder for laser additive manufacturing, and the method has the advantages of saving cost, improving the utilization rate of materials, reducing environmental pollution, saving energy and the like. The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (9)
1. A method for preparing laser cladding powder by using stainless steel leftover materials is characterized by comprising the following steps:
heating and smelting a preparation raw material containing stainless steel leftover material, wherein the preparation raw material comprises the stainless steel leftover material, industrial pure iron, a nickel plate, low-carbon chromium, high-carbon chromium, electrolytic manganese, ferrosilicon and ferroboron;
and atomizing into powder after the components of the molten metal are uniform to prepare the laser cladding powder.
2. The method for preparing laser cladding powder by using stainless steel scraps as claimed in claim 1, wherein the weight ratio of the stainless steel scraps to other raw materials in the raw materials for preparation is 1: 1.
3. The method for preparing laser cladding powder by using stainless steel scrap as claimed in claim 1, wherein the heating and melting temperature is 1550-.
4. The method for preparing laser cladding powder by using stainless steel scrap according to claim 3, wherein the heating and melting of the preparation raw materials containing the stainless steel scrap specifically comprises: adding industrial pure iron, stainless steel leftover materials, nickel plates, low-carbon chromium, high-carbon chromium and electrolytic manganese, heating, adding ferrosilicon and ferroboron after the set heating and smelting temperature is reached, and keeping the heating and smelting temperature until the raw materials are completely molten.
5. The method for preparing laser cladding powder by using stainless steel scrap according to claim 4, wherein after the heating melting is started, the temperature is raised to a preset melting temperature for 1-1.5 hours, and the melting temperature is maintained for 0.5-1 hour.
6. The method for preparing laser cladding powder by using stainless steel leftover material according to claim 2, wherein the prepared laser cladding powder consists of the following components in parts by weight: c is 0.05-0.15; 1.5-2 parts of Mo; b is 0.5 to 1; 15.5-17.0 parts of Cr; 3.5 to 4.5 percent of Ni; mn 0.3-0.7; 0.8 to 1.3 portions of Si; the balance of Fe.
7. The method of claim 6, wherein the composition of the stainless steel scrap is measured in advance before the heating and melting, and the ratio of the stainless steel scrap to be added to the raw materials for the production is calculated based on the composition of the laser-cladding powder.
8. The method for preparing laser cladding powder by using stainless steel scrap according to claim 1, wherein an atomizing nozzle with a diameter of 6mm is selected, and the atomizing pressure is set to 12 Mpa.
9. The method for preparing laser cladding powder by using stainless steel scrap as claimed in claim 8, wherein the metal powder with the particle size of 120-300 meshes is obtained as laser cladding powder by sieving after the stainless steel scrap is atomized into powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327526.XA CN110919016A (en) | 2019-12-20 | 2019-12-20 | Method for preparing laser cladding powder by using stainless steel leftover material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327526.XA CN110919016A (en) | 2019-12-20 | 2019-12-20 | Method for preparing laser cladding powder by using stainless steel leftover material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110919016A true CN110919016A (en) | 2020-03-27 |
Family
ID=69863477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911327526.XA Withdrawn CN110919016A (en) | 2019-12-20 | 2019-12-20 | Method for preparing laser cladding powder by using stainless steel leftover material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110919016A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112427645A (en) * | 2020-10-28 | 2021-03-02 | 宝武环科武汉金属资源有限责任公司 | Method for producing laser cladding powder by using waste silicon steel |
| CN112620640A (en) * | 2020-12-09 | 2021-04-09 | 温州宏丰电工合金股份有限公司 | Preparation method of AgNi electrical contact material based on recycling of AgC scrap |
-
2019
- 2019-12-20 CN CN201911327526.XA patent/CN110919016A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112427645A (en) * | 2020-10-28 | 2021-03-02 | 宝武环科武汉金属资源有限责任公司 | Method for producing laser cladding powder by using waste silicon steel |
| CN112620640A (en) * | 2020-12-09 | 2021-04-09 | 温州宏丰电工合金股份有限公司 | Preparation method of AgNi electrical contact material based on recycling of AgC scrap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102294485B (en) | Composite electric contact material and preparation method thereof | |
| CN102453910B (en) | Roller surface laser strengthened coating powder material of roller type crusher | |
| CN102719708A (en) | Laser-cladding high-toughness high-hardness nickel-base alloy powder and preparation method thereof | |
| CN101381868A (en) | High-hardness stainless steel alloy powder for laser remelted and technique of preparing the same | |
| CN102899664A (en) | Laser cladding alloy powder and preparation method thereof | |
| CN110919016A (en) | Method for preparing laser cladding powder by using stainless steel leftover material | |
| CN103752818B (en) | A kind of composite powder containing high chromium content for laser melting coating | |
| CN106270494A (en) | Nonmagnetic steel goods and powder metallurgically manufacturing method thereof | |
| CN102912189A (en) | Laser-cladding cobalt-based alloy powder and method for preparing same | |
| CN105441771A (en) | Application of hexabasic alloy powder in laser cladding | |
| CN103752837A (en) | Method for producing water atomized alloy powder by using reduced iron of smelting slag | |
| CN102021567B (en) | Nickel base alloy powder for manufacturing anticorrosive coating of boiler tube | |
| CN115747644A (en) | Rare earth weathering steel for photovoltaic bracket and production method thereof | |
| CN104249225A (en) | Nickel-based high-temperature alloy welding powder and preparation method thereof as well as special equipment | |
| CN112317753A (en) | Preparation method of spherical nickel-based high-temperature alloy powder for 3D printing | |
| CN109797391A (en) | A kind of preparation method of wind power bearing low dilution rate FeCrCoNiMoTi high-entropy alloy powder and its cladding layer | |
| CN113579237A (en) | Preparation method for reducing apparent density of copper-tin alloy powder | |
| CN101181745B (en) | Method for preparing titanium alloy cast ingot | |
| CN101670502A (en) | Rare earth iron powder alloy for high efficiency water atomization welding rod and production method thereof | |
| CN113118458A (en) | Prediction method for tensile property of metal component formed by selective laser melting | |
| CN110484916A (en) | A kind of high speed and ultrahigh speed laser melting coating Co-based alloy powder | |
| CN101532116A (en) | A multi-component micro-alloy cast novel material for producing cylinder liner and its preparation method The invention discloses a multi-component micro-alloy cast novel material for producing cylind | |
| CN101177757B (en) | Method for preparing alloying material for smelting vanadium-manganese-containing alloy steel and method for smelting vanadium-manganese-containing alloy steel | |
| CN109402453A (en) | A kind of high fluidity die casting kirsite | |
| CN109825671A (en) | A kind of preparation method and its usage of industrial silica fume pelletizing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200327 |