CN115961219A - Stainless steel material for 3D printing, and preparation method and application thereof - Google Patents
Stainless steel material for 3D printing, and preparation method and application thereof Download PDFInfo
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- CN115961219A CN115961219A CN202111188968.8A CN202111188968A CN115961219A CN 115961219 A CN115961219 A CN 115961219A CN 202111188968 A CN202111188968 A CN 202111188968A CN 115961219 A CN115961219 A CN 115961219A
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- 238000010146 3D printing Methods 0.000 title claims abstract description 113
- 239000000463 material Substances 0.000 title claims abstract description 71
- 239000010935 stainless steel Substances 0.000 title claims abstract description 68
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- 239000011651 chromium Substances 0.000 claims abstract description 11
- 239000010941 cobalt Substances 0.000 claims abstract description 11
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 29
- 239000000843 powder Substances 0.000 claims description 14
- 238000009689 gas atomisation Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000000889 atomisation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000004512 die casting Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003574 free electron Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
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Classifications
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- 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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- Moulds For Moulding Plastics Or The Like (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a stainless steel material for 3D printing, which comprises the following components in percentage by mass: 13.0 to 14.0 percent of chromium, 12.0 to 14.0 percent of nickel, 33.0 to 34.0 percent of cobalt, 0.1 to 0.2 percent of carbon and the balance of iron; the thermal conductivity of the 3D printing die at normal temperature is 62W/(m.K) by applying the stainless steel material for 3D printing into the 3D printing die; the thermal conductivity at 100 ℃ is 65W/(m.K); the thermal conductivity at 200 ℃ is 68W/(m.K); the thermal conductivity at 400 ℃ is 72W/(m.K), the production efficiency of the 3D printing mold can be improved, the 3D printing mold can be difficult to crack and damage under the high-temperature working environment, the high-temperature working requirement of the mold is met, and the service life is longer.
Description
Technical Field
The invention belongs to the technical field of 3D printing, and particularly relates to a stainless steel material for 3D printing, a preparation method of the stainless steel material, and application of the stainless steel material in a 3D printing mold.
Background
The 3D printing technology is an advanced manufacturing technology developed in recent years, and is a novel manufacturing process for forming a three-dimensional entity of a part by continuously adding materials and stacking layer by layer on the basis of a three-dimensional model of the part, and at present, a mode of producing a mold by adopting the 3D printing technology has made good progress. The 3D printing mold is widely applied to the fields of die casting and injection molding, for example, a mold insert with a conformal cooling channel can effectively shorten the injection molding period of the injection mold; the die-casting die with the conformal cooling channel can reduce the spraying times of the condensing agent on the surface of the die in the die-casting process, thereby prolonging the service life of the die and maintaining the quality of a casting.
Currently, the existing 3D printing die steel materials are 1.2709, CX, and the like, wherein the thermal conductivity of the CX material at normal temperature is 18W/(m.k), and the thermal conductivity of 1.2709 at normal temperature is 21W/(m.k). Under high temperature operational environment such as die-casting, because current 3D printing material's thermal conductivity is lower than traditional material, even there is cooling waterway, but cooling rate is unsatisfactory, leads to the mould that this kind of 3D printing material made very easily to take place fracture and damage in the use, seriously influences the life of mould.
A 3D printing stainless steel material and a preparation method and application thereof as disclosed in chinese patent application No. CN201910916634.4 (publication No. CN 110629131A) comprises 10.0-13.0wt% of chromium, 10.0-13.0wt% of nickel, 0.5-2.5wt% of molybdenum, 1.5-2.0wt% of aluminum, 0.5-2.0wt% of titanium, 0-1.0wt% of cobalt, 0-1.0wt% of copper, 0-1.0wt% of silicon, 0-1.0wt% of manganese, 0-0.5wt% of niobium, 0-0.01wt% of boron, 0-0.08wt% of carbon, and the balance of iron element, and unavoidable trace impurities in steel; the raw material mixture is prepared into 3D printing stainless steel metal powder by adopting a vacuum melting gas atomization method, because the heat conduction of a metal material mainly depends on the thermal motion of free electrons, after other elements are added into pure metal to form alloy, the embedding of other elements can seriously obstruct the motion of the free electrons, so that the heat conductivity is greatly reduced, and not only is the cooling speed slow when the 3D printing stainless steel metal powder is used for preparing a 3D printing mold, so that the injection molding cycle of the mold is long, the production efficiency of the 3D printing mold is low, but also the mold prepared from the 3D printing stainless steel metal powder is very easy to crack and damage under a high-temperature working environment, and the high-temperature working requirement of the mold can not be met; moreover, the 3D printing stainless steel material has insufficient wear resistance, which also affects the service life of the mold made of the 3D printing stainless steel material; in addition, the 3D printing stainless steel metal powder preparation method is complex, multiple in large-scale production procedures and low in production efficiency.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a stainless steel material for 3D printing, which has high thermal conductivity and better wear resistance in normal temperature and high temperature working environments, in view of the current situation of the prior art.
The second technical problem to be solved by the present invention is to provide a method for preparing the stainless steel material for 3D printing, which is simple in preparation method and few in process, and can effectively improve the production efficiency of the stainless steel material for 3D printing.
The third technical problem to be solved by the present invention is to provide an application of the stainless steel material for 3D printing in a 3D printing mold for the current state of the prior art, so that the 3D printing mold has higher production efficiency and longer service life.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the stainless steel material for 3D printing is characterized by comprising the following components in percentage by mass: 13.0 to 14.0 percent of chromium, 12.0 to 14.0 percent of nickel, 33.0 to 34.0 percent of cobalt, 0.1 to 0.2 percent of carbon, and the balance of iron.
Preferably, the stainless steel material for 3D printing is spherical powder, the particle size of the stainless steel material is 15-53 mu m, and the oxygen content is lower than 300ppm. The stainless steel material for 3D printing has a proper particle size and a low oxygen content, so that a 3D printing die made of the stainless steel material for 3D printing is close to full-dense. Since the pores become larger with increasing temperature and hinder heat conduction inside the 3D printing mold, the density as high as possible at high temperature can improve the thermal conductivity of the 3D printing mold.
The technical solution adopted by the present invention to solve the second technical problem is as follows: the preparation method of the stainless steel material for 3D printing is characterized by sequentially comprising the following steps of:
(1) the weight percentages are as follows: 13.0-14.0% of chromium, 12.0-13.0% of nickel, 33.0-34.0% of cobalt, 0.1-0.2% of carbon and the balance of iron, and weighing the raw materials for later use;
(2) and (3) mixing the raw materials in the step (1) by adopting a vacuum melting gas atomization method, and preparing the mixture into spherical powdery stainless steel material for 3D printing.
Compared with a water atomization method for preparing a stainless steel powder material for 3D printing, the stainless steel powder prepared by the gas atomization method is better in sphericity and more uniform in particle size distribution; compared with the plasma atomization method for preparing the stainless steel powder material for 3D printing, the gas atomization method is lower in cost.
Preferably, in the step (2), the process parameters of the vacuum melting gas atomization method are as follows: the smelting temperature is 1650-1800 ℃, the vacuum degree is 2-3Pa, and the atomization pressure is 3-5MPa.
The technical scheme adopted by the invention for solving the third technical problem is as follows: use of a stainless steel material for 3D printing as described above in a 3D printing mold.
Specifically, the specific operation process of the stainless steel material for 3D printing applied in the 3D printing mold sequentially comprises:
(1) placing the stainless steel material for 3D printing on a substrate, then placing the substrate in a 3D printing device, and forming the stainless steel material for 3D printing on the substrate through the 3D printing device, so as to manufacture a 3D printing mold;
(2) and (3) carrying out heat treatment on the 3D printing die formed in the step (1).
Preferably, in the step (1), the 3D printing apparatus adopts the following process parameters: the forming power is 250-500W, the scanning speed is 750-1650 mm/s, and the layer thickness is 30-120 μm; the heating temperature of the substrate is 80-150 ℃, and air cooling is carried out after the 3D printing mold is formed. Due to the appropriate scanning speed and forming power, the 3D printing mold has a finer grain size, and the fine grains can reduce lattice vibration, so that the thermal conductivity of the material is improved.
Preferably, in the step (2), the heat treatment temperature is 490-560 ℃, and the holding time is 2.5-3.5 h.
Specifically, the thermal conductivity of the 3D printing mold at normal temperature is 56-62W/(m.K), the thermal conductivity at 100 ℃ is 59-65W/(m.K), and the thermal conductivity at 200 ℃ is 64-69W/(m.K); the thermal conductivity at 400 ℃ is 68-72W/(m.K).
Compared with the prior art, the invention has the advantages that: because carbon will react with iron and chromium to form (Fe, cr) 7 C 3 The carbide precipitates can not only quickly transfer heat during high-temperature work, but also improve the wear resistance of the material, so that the stainless steel material for 3D printing promotes the formation of more carbide precipitates by improving the content of carbon in the components, the wear resistance is better, the precipitation of the precipitates is promoted and strengthened by high-content cobalt, the Ms temperature point is improved by inhibiting the precipitation of residual austenite, and in addition, the obstruction of metal elements on the movement of free electrons is reduced by reducing the metal types in the alloy components, so that the heat conductivity of the stainless steel material for 3D printing can be improved; the method for 3D printingThe preparation method of the printed stainless steel material has the advantages of simple preparation method and few working procedures due to less related raw material types, and can effectively improve the production efficiency; above-mentioned an application that is arranged in stainless steel material of 3D printing in 3D print die utensil, because stainless steel material has higher heat conductivity, can make 3D print die utensil cooling rate when the preparation faster, thereby can shorten 3D print die utensil injection moulding's cycle, make 3D print die utensil production efficiency higher, and, 3D print die utensil has higher heat conductivity and makes 3D print die utensil under high temperature operational environment such as die-casting, be difficult to take place fracture and damage, thereby life is longer.
Drawings
Fig. 1 is a flowchart of a method of manufacturing a 3D printing mold.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
the stainless steel material for 3D printing in the implementation comprises the following components in percentage by mass: 13.0% of chromium, 14% of nickel, 34% of cobalt, 0.1% of carbon and the balance of iron. The stainless steel material for 3D printing in the embodiment is spherical powder, the particle size of the stainless steel material is 15-53 mu m, the oxygen content is lower than 300ppm, and the 3D printing mold made of the stainless steel material for 3D printing is close to full compactness, so that the obstruction of pores to the heat conduction in the 3D printing mold can be reduced, and the heat conductivity of the 3D printing mold is improved.
The preparation method of the stainless steel material for 3D printing, as shown in fig. 1, sequentially comprises the following steps: (1) the weight percentages are as follows: 13.0% of chromium, 14% of nickel, 34% of cobalt, 0.1% of carbon and the balance of iron, and weighing the raw materials for later use; (2) and (2) mixing the raw materials in the step (1) by adopting a vacuum melting gas atomization method, and preparing the mixture into spherical powdery stainless steel material for 3D printing. The vacuum melting gas atomization method (vacuum gas atomization powder preparation) is a prior art, and will not be described in detail in this embodiment. In the embodiment, the melting temperature of the vacuum melting gas atomization method is 1750 ℃, the vacuum degree is 3Pa, and the atomization pressure is 3MPa; the powder obtained by the vacuum melting gas atomization method is spherical, the particle size of the powder is 15-53 mu m, and the oxygen content of the powder is 300ppm.
Above-mentioned an application of stainless steel material for 3D prints in 3D printing die, concrete operation process is in proper order: a, step a: part printing (3D printing preparation): the stainless steel material for 3D printing is placed on a substrate, then the substrate is placed in a 3D printing device, the substrate is heated by a strip scanning strategy in the 3D printing device, the heating temperature is 80 ℃, the forming power adopted by the 3D printing device is 280W, the scanning speed is 1200mm/s, the layer thickness is 30 mu m, and the stainless steel material for 3D printing is formed on the substrate, so that the 3D printing die is prepared.
Step b: carrying out heat treatment on the 3D printing die: after the 3D printing die is formed, the workpiece (the 3D printing die) is placed in a muffle furnace for heat treatment, ar atmosphere is adopted for protection in the heat treatment process, the heat treatment temperature is 560 ℃, the heat preservation time is 3 hours, and the final formed workpiece is prepared.
The thermal conductivity of the final shaped article of this example at room temperature, 100 ℃, 200 ℃ and 400 ℃ was tested as shown in table 1.
TABLE 1
| Temperature of | Thermal conductivity (W/(m.K)) |
| At normal temperature | 56 |
| 100℃ | 59 |
| 200℃ | 64 |
| 400℃ | 68 |
As can be seen from table 1 above, the workpiece prepared in this embodiment has a thermal conductivity of 70W/(m.k) at 400 ℃, has a longer working efficiency and a longer service life, and meets the requirement of high-temperature operation.
Example 2
This embodiment differs from embodiment 1 described above only in that:
1. the stainless steel material for 3D printing has different component contents, and specifically, the 3D printing wear-resistant stainless steel material of the embodiment comprises the following components in percentage by mass: 13.0 percent of chromium, 14 percent of nickel, 34 percent of cobalt, 0.15 percent of carbon and the balance of iron.
2. The process parameters in the preparation method of the stainless steel material for 3D printing are different, and specifically, the smelting temperature in the step (2) is 1750 ℃.
The thermal conductivity of the final shaped article of this example at room temperature, 100 ℃, 200 ℃ and 400 ℃ was tested and is specifically shown in table 2.
TABLE 2
| Temperature of | Thermal conductivity (W/(m.K)) |
| At room temperature | 60 |
| 100℃ | 63 |
| 200℃ | 68 |
| 400℃ | 70 |
As can be seen from table 2 above, the workpiece prepared in this embodiment has a thermal conductivity of 70W/(m.k) at 400 ℃, has a longer working efficiency and a longer service life, and meets the requirement of high-temperature operation.
Example 3
This embodiment differs from embodiment 1 described above only in that:
1. the stainless steel material for 3D printing has different component contents, and specifically, the 3D printing wear-resistant stainless steel material of the embodiment comprises the following components in percentage by mass: 13.0 percent of chromium, 14 percent of nickel, 34 percent of cobalt, 0.2 percent of carbon and the balance of iron.
2. The process parameters in the preparation method of the stainless steel material for 3D printing are different, and specifically, the melting temperature in step (2) is 1650 ℃.
The thermal conductivity of the final shaped article of this example at room temperature, 100 ℃, 200 ℃ and 400 ℃ is tested as shown in table 3.
TABLE 3
| Temperature of | Thermal conductivity (W/(m.K)) |
| At normal temperature | 62 |
| 100℃ | 65 |
| 200℃ | 69 |
| 400℃ | 72 |
As can be seen from table 3 above, the workpiece prepared in this embodiment has a thermal conductivity of 70W/(m.k) at 400 ℃, has a longer working efficiency and a longer service life, and meets the requirement of high-temperature operation.
Claims (9)
1. The stainless steel material for 3D printing is characterized by comprising the following components in percentage by mass: 13.0 to 14.0 percent of chromium, 12.0 to 14.0 percent of nickel, 33.0 to 34.0 percent of cobalt, 0.1 to 0.2 percent of carbon and the balance of iron.
2. Stainless steel material for 3D printing according to claim 1, characterized in that: the stainless steel material for 3D printing is spherical powder, the particle size of the stainless steel material is 15-53 mu m, and the oxygen content of the stainless steel material is lower than 300ppm.
3. A method of preparing a stainless steel material for 3D printing according to claim 1 or 2, comprising the following steps in order:
1) The weight percentages are as follows: 13.0 to 14.0 percent of chromium, 12.0 to 13.0 percent of nickel, 33.0 to 34.0 percent of cobalt, 0.1 to 0.2 percent of carbon and the balance of iron, and weighing the raw materials for later use;
2) And (2) mixing the raw materials in the step (1) by adopting a vacuum melting gas atomization method, and preparing the mixture into spherical powdery stainless steel material for 3D printing.
4. The preparation method of the stainless steel material for 3D printing according to claim 3, wherein in the step 2), the process parameters of the vacuum melting and gas atomization method are as follows: the smelting temperature is 1650-1800 ℃, the vacuum degree is 2-3Pa, and the atomization pressure is 3-5MPa.
5. Use of the stainless steel material for 3D printing according to claim 1 or 2 in a 3D printing die.
6. The application of the stainless steel material for 3D printing in the 3D printing mold according to claim 5, wherein the specific operation process of the stainless steel material for 3D printing in the 3D printing mold is as follows in sequence:
(1) placing the stainless steel material for 3D printing on a substrate, then placing the substrate in a 3D printing device, and forming the stainless steel material for 3D printing on the substrate through the 3D printing device, so as to manufacture a 3D printing mold;
(2) and (3) carrying out heat treatment on the 3D printing die formed in the step (1).
7. The use of the stainless steel material for 3D printing in a 3D printing mold according to claim 6, wherein in step (1), the 3D printing apparatus employs the process parameters of: the forming power is 250-500W, the scanning speed is 750-1650 mm/s, and the layer thickness is 30-120 μm; the heating temperature of the substrate is 80-150 ℃, and air cooling is carried out after the 3D printing mold is formed.
8. The use of a stainless steel material for 3D printing in a 3D printing mold according to claim 6, wherein in step (2), the heat treatment temperature is 490-560 ℃ and the holding time is 2.5-3.5 h.
9. The use of a stainless steel material for 3D printing in a 3D printing die according to claim 6, wherein the 3D printing die has a thermal conductivity of 56 to 62W/(m.k) at room temperature, a thermal conductivity of 59 to 65W/(m.k) at 100 ℃ and a thermal conductivity of 64 to 69W/(m.k) at 200 ℃; the thermal conductivity at 400 ℃ is 68-72W/(m.K).
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|---|---|---|---|---|
| GB678616A (en) * | 1948-08-23 | 1952-09-03 | Alloy Res Corp | High temperature stainless steel |
| GB1070103A (en) * | 1963-09-20 | 1967-05-24 | Nippon Yakin Kogyo Co Ltd | High strength precipitation hardening heat resisting alloys |
| JPH04329852A (en) * | 1991-05-07 | 1992-11-18 | Nippon Steel Corp | Alloy for waste incineration furnace boiler and multiple layered steel tube |
| JPH05271849A (en) * | 1992-03-27 | 1993-10-19 | Nippon Steel Corp | Boiler alloy excellent in hot workability and erosion resistance |
| CN105562691A (en) * | 2015-12-23 | 2016-05-11 | 华中科技大学 | 3D printing preparation method for injection mold |
| CN108118333A (en) * | 2017-12-22 | 2018-06-05 | 北京机科国创轻量化科学研究院有限公司 | A kind of powder of stainless steel for superelevation rate laser melting coating |
| CN110629131A (en) * | 2019-09-26 | 2019-12-31 | 上海镭镆科技有限公司 | 3D printing stainless steel material, preparation method and application |
-
2021
- 2021-10-12 CN CN202111188968.8A patent/CN115961219A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB678616A (en) * | 1948-08-23 | 1952-09-03 | Alloy Res Corp | High temperature stainless steel |
| GB1070103A (en) * | 1963-09-20 | 1967-05-24 | Nippon Yakin Kogyo Co Ltd | High strength precipitation hardening heat resisting alloys |
| JPH04329852A (en) * | 1991-05-07 | 1992-11-18 | Nippon Steel Corp | Alloy for waste incineration furnace boiler and multiple layered steel tube |
| JPH05271849A (en) * | 1992-03-27 | 1993-10-19 | Nippon Steel Corp | Boiler alloy excellent in hot workability and erosion resistance |
| CN105562691A (en) * | 2015-12-23 | 2016-05-11 | 华中科技大学 | 3D printing preparation method for injection mold |
| CN108118333A (en) * | 2017-12-22 | 2018-06-05 | 北京机科国创轻量化科学研究院有限公司 | A kind of powder of stainless steel for superelevation rate laser melting coating |
| CN110629131A (en) * | 2019-09-26 | 2019-12-31 | 上海镭镆科技有限公司 | 3D printing stainless steel material, preparation method and application |
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