CN117380973A - Method for improving comprehensive performance of H13 steel part - Google Patents
Method for improving comprehensive performance of H13 steel part Download PDFInfo
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- CN117380973A CN117380973A CN202311375259.XA CN202311375259A CN117380973A CN 117380973 A CN117380973 A CN 117380973A CN 202311375259 A CN202311375259 A CN 202311375259A CN 117380973 A CN117380973 A CN 117380973A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 101
- 239000010959 steel Substances 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 20
- 238000001291 vacuum drying Methods 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 230000007480 spreading Effects 0.000 claims description 9
- 238000003892 spreading Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000010146 3D printing Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 19
- 239000012300 argon atmosphere Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 229910000734 martensite Inorganic materials 0.000 description 6
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Plasma & Fusion (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to the technical field of metal 3D printing technology and die materials, in particular to a method for improving the comprehensive performance of an H13 steel product, which comprises the steps of tiling H13 steel powder on a substrate to form a powder layer; under the protection of inert gas, carrying out layer-by-layer scanning forming on the powder layer by utilizing laser to obtain an H13 steel product; the H13 steel is placed in a vacuum furnace, kept at 500-600 ℃ for 2-4 hours, and then cooled to room temperature, and the mechanical properties and wear resistance of the H13 steel are improved by optimizing laser scanning parameters and a subsequent heat treatment process, so that the method is suitable for manufacturing high-end dies and mechanical parts.
Description
Technical Field
The invention relates to the field of metal 3D printing technology and die materials, in particular to a method for improving the comprehensive performance of H13 steel parts.
Background
The H13 steel is hot work die steel, has excellent heat resistance, heat stability, wear resistance and corrosion resistance, is widely applied to die manufacture at high temperature and high pressure, is a metal 3D printing technology, can directly prepare parts with complex shapes from metal powder, has the advantages of saving materials, shortening the period, improving the flexibility and the like, however, the H13 steel formed by the SLM has some problems such as defects, stress, anisotropy and the like, and influences the comprehensive performance of the H13 steel, so that the comprehensive performance of the H13 steel formed by the SLM is a technical problem to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for improving the comprehensive performance of the H13 steel part, which improves the mechanical property and the wear resistance of the H13 steel part by optimizing laser scanning parameters and subsequent heat treatment processes and is suitable for manufacturing high-end dies and mechanical parts.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
vacuum drying H13 steel powder, and then spreading on a substrate to form a powder layer;
under the protection of inert gas, carrying out layer-by-layer scanning forming on the powder layer by utilizing laser to obtain a first H13 steel part after laser scanning;
placing the first H13 steel part subjected to laser scanning in a vacuum furnace for heat treatment, and then cooling to room temperature to obtain the H13 steel part;
wherein, the laser scanning parameters are as follows: the laser power is 200-400W, the diameter of the light spot is 80-120 mu m, the scanning interval is 0.08-0.12 mm, and the scanning speed is 700-1200 mm/s.
In a preferred embodiment of the present invention, the laser scanning parameters are: the laser power is 200W, the diameter of a light spot is 80 mu m, the scanning interval is 0.05mm, and the scanning speed is 700mm/s.
In a preferred embodiment of the present invention, the heat treatment temperature is 500 to 600 ℃ and the heat treatment time is 2 to 4 hours.
In a preferred embodiment of the invention, the substrate is 316L stainless steel.
In a preferred embodiment of the invention, the powder layer has a thickness of 30 to 50 μm.
In the preferred embodiment of the invention, the vacuum drying temperature of the H13 steel powder is 70-120 ℃ and the drying time is 2-4H.
In a preferred embodiment of the invention, the inert gas is argon, and the oxygen content is less than 100ppm under the protection of argon.
In a preferred embodiment of the present invention, the cooling rate is 10deg.C/min.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can reduce void ratio and crack generation by increasing laser power and reducing scanning interval, improve density and strength of H13 steel, increase cooling rate and temperature gradient by increasing laser power and reducing spot diameter, promote formation of fine and uniform martensitic phase, improve hardness and wear resistance, increase size and depth-to-width ratio of molten pool by properly reducing scanning rate, reduce generation of unmelted area and oxide inclusion, and improve uniformity and toughness.
2. The invention can eliminate residual stress and tissue defect by high temperature solution treatment, promote the uniform distribution of carbon atoms and the formation of austenite, reduce the volume fraction and hardness of martensite phase by low temperature tempering treatment, and increase the volume fraction and toughness of tempered sorbite phase, thereby improving the comprehensive performance of H13 steel parts.
Drawings
FIG. 1 is a graph showing the frictional wear of the H13 steel product of example 1 of the present invention;
FIG. 2 is a graph showing the frictional wear of the H13 steel product of example 2 according to the present invention;
FIG. 3 is a graph showing the frictional wear of the H13 steel product of comparative example 1 of the present invention;
FIG. 4 is a SEM surface morphology of a tensile sample of an H13 steel product prepared in comparative example 1 according to the present invention;
FIG. 5 is a cross-sectional SEM surface morphology of a tensile sample of an H13 steel product prepared in example 1 of the present invention;
FIG. 6 is a SEM surface morphology of a tensile sample of an H13 steel product prepared according to example 2 of the present invention.
Detailed Description
The following description is provided in connection with the preferred embodiments and the accompanying drawings.
The H13 steel product is hot work die steel with excellent heat resistance, heat stability, wear resistance and corrosion resistance, is widely applied to die manufacture at high temperature and high pressure, and the Selective Laser Melting (SLM) is a metal 3D printing technology, can directly prepare parts with complex shapes from metal powder, has the advantages of saving materials, shortening period, improving flexibility and the like, however, the H13 steel product formed by the SLM has some problems such as defects, stress, anisotropy and the like, and influences the comprehensive performance of the H13 steel product, so the invention provides a method for improving the comprehensive performance of the H13 steel product, which comprises the following steps: tiling H13 steel powder on a substrate to form a powder layer; under the protection of inert gas, carrying out layer-by-layer scanning forming on the powder layer by utilizing laser to obtain an H13 steel product; placing the H13 steel part in a vacuum furnace, preserving heat for 2-4 hours at 500-600 ℃, and then cooling to room temperature, wherein the parameters of laser scanning are as follows: the laser power is 200-400W, the spot diameter is 80-120 mu m, the scanning interval is 0.08-0.12 mm, the scanning speed is 700-1200 mm/s, the H13 steel with high comprehensive performance is obtained, the void fraction and the crack can be reduced by increasing the laser power and reducing the scanning interval, the compactness and the strength of the H13 steel are improved, the cooling speed and the temperature gradient can be increased by increasing the laser power and reducing the spot diameter, the formation of tiny uniform martensite phase is promoted, the hardness and the wear resistance are improved, the size and the depth-to-width ratio of a molten pool can be increased by properly reducing the scanning speed, the generation of unmelted areas and oxide inclusions are reduced, the uniformity and the toughness are improved, the residual stress and the tissue defect can be eliminated by high-temperature solution treatment, the uniform distribution of carbon atoms and the formation of austenite are promoted, the volume fraction and the hardness of the martensite phase can be reduced by low-temperature tempering treatment, the volume fraction and the toughness of the tempered sorbite phase are increased, the mechanical property and the wear resistance of the H13 steel are improved by optimizing the laser scanning parameters and the subsequent heat treatment process, and the mechanical part is suitable for manufacturing high-end dies and mechanical parts.
Example 1
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 100deg.C for 2 hr, and spreading on 316L stainless steel substrate to form powder layer with thickness of 30 μm;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: the laser power is 200W, the diameter of a light spot is 100 mu m, the scanning interval is 0.1mm, and the scanning speed is 900mm/s;
(3) And (3) placing the H13 steel part in a vacuum furnace, preserving heat for 3 hours at the temperature of 550 ℃, and then cooling to room temperature at the cooling rate of 10 ℃/min to obtain the H13 steel part with high comprehensive performance.
Example 2
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 120 ℃ for 6 hours, and then spreading the powder on a 316L stainless steel substrate to form a powder layer, wherein the thickness of the powder layer is 40 mu m;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: the laser power is 300W, the diameter of a light spot is 100 mu m, the scanning interval is 0.09mm, and the scanning speed is 1200mm/s;
(3) And (3) placing the H13 steel part in a vacuum furnace, preserving heat for 4 hours at the temperature of 600 ℃, and then cooling to room temperature at the cooling rate of 10 ℃/min to obtain the H13 steel part with high comprehensive performance.
Example 3
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 100deg.C for 2 hr, and spreading on 316L stainless steel substrate to form powder layer with thickness of 30 μm;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: the laser power is 300W, the diameter of a light spot is 100 mu m, the scanning interval is 0.1mm, and the scanning speed is 900mm/s;
(3) And (3) placing the H13 steel part in a vacuum furnace, preserving heat for 3 hours at the temperature of 550 ℃, and then cooling to room temperature at the cooling rate of 10 ℃/min to obtain the H13 steel part with high comprehensive performance.
Example 4
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 100deg.C for 2 hr, and spreading on 316L stainless steel substrate to form powder layer with thickness of 30 μm;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: laser power 400W, spot diameter 120 μm, scanning interval 0.12mm, scanning rate 1200mm/s;
(3) And (3) placing the H13 steel part in a vacuum furnace, preserving heat for 3 hours at the temperature of 550 ℃, and then cooling to room temperature at the cooling rate of 10 ℃/min to obtain the H13 steel part with high comprehensive performance.
Example 5
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 120 ℃ for 3 hours, and then spreading the powder on a 316L stainless steel substrate to form a powder layer, wherein the thickness of the powder layer is 40 mu m;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: the laser power is 200W, the diameter of a light spot is 80 mu m, the scanning interval is 0.08mm, and the scanning speed is 700mm/s;
(3) And (3) placing the H13 steel part in a vacuum furnace, preserving heat for 2 hours at the temperature of 500 ℃, and then cooling to room temperature at the cooling rate of 10 ℃/min to obtain the H13 steel part with high comprehensive performance.
Example 6
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 70 ℃ for 4 hours, and then spreading on a 316L stainless steel substrate to form a powder layer, wherein the thickness of the powder layer is 50 mu m;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: the laser power is 200W, the diameter of a light spot is 80 mu m, the scanning interval is 0.08mm, and the scanning speed is 700mm/s;
(3) And (3) placing the H13 steel part in a vacuum furnace, preserving heat for 4 hours at the temperature of 600 ℃, and then cooling to room temperature at the cooling rate of 10 ℃/min to obtain the H13 steel part with high comprehensive performance.
Comparative example 1
A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
(1) Vacuum drying H13 steel powder at 70 ℃ for 3 hours, and then spreading on a 316L stainless steel substrate to form a powder layer, wherein the thickness of the powder layer is 50 mu m;
(2) Under the protection of argon atmosphere, the oxygen content is lower than 100ppm, the powder layer is scanned and formed layer by utilizing laser, so as to obtain the H13 steel part, and the parameters of laser scanning are as follows: the laser power is 200W, the spot diameter is 100 mu m, the scanning interval is 0.1mm, and the scanning speed is 900mm/s, so that the processed H13 steel product is obtained.
Results and analysis
The frictional wear test was performed using an MS-T3000 frictional wear tester, the hardness of H13 steel was tested using a Vickers hardness tester (THVS-50, china), and the sample was subjected to uniaxial tensile testing using an electronic Universal tester (WDW-100, china).
Fig. 1 shows a friction and wear graph of the H13 steel product prepared in example 1 of the present invention, from which it can be seen that the friction coefficient is about 0.46 to 0.49, fig. 2 shows a friction and wear graph of the H13 steel product prepared in example 2 of the present invention, from which it can be seen that the friction coefficient is about 0.40 to 0.45, and fig. 3 shows a friction and wear graph of the H13 steel product prepared in comparative example 1, from which it can be seen that the friction coefficient of the H13 steel product prepared in comparative example 1 is about 0.53 to 0.58, indicating that the H13 steel product prepared by optimizing laser scanning parameters and subsequent heat treatment process of the present invention has better wear resistance than the heat-treated comparative example 1, mainly because the increase of laser energy density can promote the material to melt and cool more rapidly, possibly resulting in finer grains and more uniform structure, and the laser melting of high energy density can result in a reduction of residual stress in the material, which helps to reduce the generation of micro cracks and increase the surface crack generation in the wear resistance of the material.
FIG. 4 is a SEM image of a tensile sample of the H13 steel product prepared in comparative example 1, wherein a plurality of flat ductile-to-concave shapes can be seen, indicating that the sample in comparative example 1 has certain plasticity but not very strong plasticity; FIG. 5 is a SEM surface morphology of a tensile sample of an H13 steel product prepared in example 1 of the present invention, wherein the morphology of a more deep pit is shown in the SEM surface morphology of the tensile sample of the present invention than in comparative example 1, which indicates that the plasticity of the tensile sample of the present invention is improved to a certain extent; FIG. 6 is a SEM surface topography of a tensile sample of an H13 steel product prepared in accordance with example 2 of the present invention, from which it can be seen that there is a much finer and deeper dimple morphology than in comparative example 1 and example 1, indicating that the plasticity of the samples of comparative example 1 and example 1 is again improved.
TABLE 1 comprehensive Property results of H13 Steel products prepared in examples 1-2 and comparative example 1
Table 1 shows the results of the comprehensive properties of the H13 steel products obtained in examples 1-2 and comparative example 1, wherein the yield strength of examples 1-2 is 1150MPa and 1200MPa, the yield strength of comparative example 1 is 1100MPa, the tensile strength of examples 1-2 is 1500MPa and 1650MPa, the tensile strength of comparative example 1 is 1400MPa, the elongation of examples 1-2 is 3.0% and 3.9%, the elongation of comparative example 1 is 1.5%, the microhardness of the H13 steel products obtained in examples 1-2 is 550HV and 600HV, the microhardness of comparative example 1 is 510HV, the wear mass of examples 1-2 is 0.01g, and the wear mass of comparative example 1 is 0.02g, thus it is apparent that the comprehensive properties of the H13 steel products obtained in examples 1 and 2 are superior to those of comparative example 1, and that the mechanical properties and wear resistance of the H13 steel products can be improved by the method of the invention, and the H13 steel products can be applied to the manufacture of high-end dies and mechanical parts.
In summary, the invention can reduce the void ratio and the generation of cracks by increasing the laser power and reducing the scanning interval, improve the compactness and the strength of the H13 steel, increase the cooling rate and the temperature gradient by increasing the laser power and reducing the spot diameter, promote the formation of tiny and uniform martensite phases, improve the hardness and the wear resistance, increase the size and the depth-to-width ratio of a molten pool by properly reducing the scanning rate, reduce the generation of unmelted areas and oxide inclusions, improve the uniformity and the toughness, eliminate the residual stress and the tissue defect by high-temperature solution treatment, promote the uniform distribution of carbon atoms and the formation of austenite, reduce the volume fraction and the hardness of the martensite phases by low-temperature tempering treatment, improve the volume fraction and the toughness of tempered sorbite phases, improve the mechanical property and the wear resistance of the H13 steel by optimizing the laser scanning parameters and the subsequent heat treatment process, and is suitable for manufacturing high-end dies and mechanical parts.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A method for improving the comprehensive performance of an H13 steel product, comprising the steps of:
vacuum drying H13 steel powder, and then spreading on a substrate to form a powder layer;
under the protection of inert gas, carrying out layer-by-layer scanning forming on the powder layer by utilizing laser to obtain a first H13 steel part after laser scanning;
placing the first H13 steel part subjected to laser scanning in a vacuum furnace for heat treatment, and then cooling to room temperature to obtain the H13 steel part;
wherein, the laser scanning parameters are as follows: the laser power is 200-400W, the diameter of the light spot is 80-120 mu m, the scanning interval is 0.08-0.12 mm, and the scanning speed is 700-1200 mm/s.
2. The method of claim 1, wherein the laser scanning parameters are: the laser power is 200W, the spot diameter is 80 mu m, the scanning interval is 0.08mm, and the scanning speed is 700mm/s.
3. The method for improving the comprehensive performance of the H13 steel according to claim 1, wherein the heat treatment temperature is 500-600 ℃ and the heat treatment time is 2-4H.
4. The method of claim 1, wherein the substrate is 316L stainless steel.
5. The method of improving the overall properties of H13 steel according to claim 1, wherein the powder layer has a thickness of 30 to 50 μm.
6. The method for improving the comprehensive performance of the H13 steel product according to claim 1, wherein the vacuum drying temperature of the H13 steel powder is 70-120 ℃ and the drying time is 2-4H.
7. The method for improving the comprehensive performance of the H13 steel according to claim 1, wherein the inert gas is argon, and the oxygen content is less than 100ppm under the protection of the argon.
8. The method of claim 1, wherein the cooling rate is 10 ℃/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311375259.XA CN117380973A (en) | 2023-10-23 | 2023-10-23 | Method for improving comprehensive performance of H13 steel part |
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| CN202311375259.XA CN117380973A (en) | 2023-10-23 | 2023-10-23 | Method for improving comprehensive performance of H13 steel part |
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