CN108265236B - A kind of 06Cr14Ni7Mo stainless steel material and its manufacturing process - Google Patents
A kind of 06Cr14Ni7Mo stainless steel material and its manufacturing process Download PDFInfo
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- 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
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Abstract
The present invention discloses a kind of 06Cr14Ni7Mo stainless steel material and its selective laser fusing manufacturing process.Alloy constituent (mass fraction) are as follows: the Ni element of the Cr element of 13.0%-15.0%, 6.0%-8.5%, the Mo element of 0.5%-1.0%, the C element of 0-0.08%, the Si element of 0-0.75%, the Mn element of 0-0.9%, remaining is Fe element.Using vacuum metling and gas-atomized powder method, the alloy powder that partial size is 15 μm -53 μm is obtained.Melt forming parameters in selective laser are as follows: laser power 280W~310W, scanning speed 900mm/s~1100mm/s, spot diameter 0.12mm~0.14mm, powdering thickness 0.03mm-0.04mm.It is made annealing treatment in vacuum heat treatment furnace, 300 DEG C~350 DEG C heat preservation 2h~3h, backfilled with argon is cooled to room temperature.Low-temperature impact toughness at a temperature of room temperature tensile intensity is more than 1100MPa, elongation percentage is not less than 17%, -196 DEG C is not less than 40J.
Description
Technical field
The present invention relates to a kind of 06Cr14Ni7Mo stainless steel material and its manufacturing process, belong to metal-forming techniques field.
Background technique
For a new generation, China liquid oxygen/kerosene high pressure staged combustion cycle engine compared to existing Long March Engine Series, thrust improves 1
Times, correspondingly engine oxidant road operating pressure improves about 1.5 times, and oxidant also becomes from normal temperature state dinitrogen tetroxide
Nontoxic, free of contamination low-temperature condition liquid oxygen, no matter cast aluminium alloy material selected by the pressure-bearing shell of original oxidant road is from holding
For pressure energy power and compatibility, development demand is had been unable to meet.
Summary of the invention
The technical problems to be solved by the present invention are: overcoming the shortcomings of current material and technology, one kind is proposed
06Cr14Ni7Mo stainless steel material and its manufacturing process.
The technical solution of the invention is as follows:
The component of a kind of 06Cr14Ni7Mo stainless steel material, the stainless steel material includes at least Cr element, Ni element and Mo
Element；It is 100% calculating, the mass content of each component with the gross mass of the stainless steel material are as follows: the Cr member of 13.0%-15.0%
The Ni element of element, 6.0%-8.5%, the Mo element of 0.5%-1.0%, the C element of 0-0.08%, the Si element of 0-0.75%,
The Mn element of 0-0.9%, remaining is Fe element.
A kind of the step of manufacturing process of 06Cr14Ni7Mo stainless steel material, this method includes:
(1) component of stainless steel material is mixed according to the ratio, after mixing, carries out vacuum metling, rolling, obtain
Bar；
(2) bar for obtaining step (1) carries out gas-atomized powder, obtains powder, and the partial size of powder is 15 μm~53 μm；
(3) powder for obtaining step (2) carries out selective laser fusing forming, obtains what shape was met the requirements
06Cr14Ni7Mo stainless steel material；
(4) the 06Cr14Ni7Mo stainless steel material that the shape that step (3) obtains is met the requirements is made annealing treatment, is obtained
The 06Cr14Ni7Mo stainless steel material of requirement is all satisfied to shape and mechanical property.
In the step (1), carry out using vacuum induction method when vacuum metling, 1580 DEG C~1600 DEG C of smelting temperature；
Temperature is 1140 DEG C~1160 DEG C when being rolled, and rolling processes through vehicle light after terminating and obtains Ф 80mm pole；
In the step (2), the Ф 80mm pole obtained using step (1) is raw material, using gas-atomized powder method, mist
Change gas be argon gas, pressure 3.5MPa~5MPa, 100 DEG C~300 DEG C of the molten metal degree of superheat, molten metal flow rate 10Kg per minute~
20Kg obtains the alloy powder that particle size range is 15 μm~53 μm；
In the step (3), the technological parameter of selective laser fusing forming: laser power 280W~310W, scanning speed
For 900mm/s~1100mm/s, spot diameter 0.12mm~0.14mm, powdering thickness 0.03mm-0.06mm；
In the step (4), the method for annealing are as follows: 300 DEG C~350 DEG C heat preservation 2h~3h in vacuum heat treatment furnace,
Backfilled with argon is cooled to room temperature.
Beneficial effect
(1) stainless steel material of the invention is a kind of high strength stainless steel of resistance to ultralow temperature, can be used in -183 DEG C of liquid oxygen, In
It is applied as important materials in space flight hydrodynamic field.
(2) 06Cr14Ni7Mo stainless steel laser selective melting manufacturing process proposed by the present invention mainly solves fusible pattern essence
Close casting method bring cold shut, the problem of loose, the defects of being mingled with and consistency deficiency, production cycle were foreshortened to by 3 months
25 days.
(3) formed parts prepared by the present invention are being not less than 17% more than 1100MPa, elongation percentage in room temperature tensile intensity
While, the low-temperature impact toughness at a temperature of -196 DEG C can meet space product to expand application range not less than 40J
Requirement to 06Cr14Ni7Mo stainless steel component intensity and plasticity.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Embodiment 1
A kind of 06Cr14Ni7Mo stainless steel material is 100 parts of calculating with the gross mass of the stainless steel material, each component
Mass content are as follows: 13.74% Cr element, 8.26% Ni element, 0.64% Mo element, 0.064% C element,
0.39% Si element, 0.52% Mn element, remaining is Fe element.
A kind of the step of manufacturing process of 06Cr14Ni7Mo stainless steel material, this method includes:
(1) component proportion of stainless steel material is mixed, after mixing, carries out vacuum metling, rolling, obtain stick
Material；
(2) bar for obtaining step (1) carries out gas-atomized powder, obtains powder, and the partial size of powder is 15 μm -53 μm；
(3) powder for obtaining step (2) carries out selective laser fusing forming, obtains what shape was met the requirements
06Cr14Ni7Mo stainless steel material；
(4) the 06Cr14Ni7Mo stainless steel material that the shape that step (3) obtains is met the requirements is made annealing treatment, is obtained
The 06Cr14Ni7Mo stainless steel material of requirement is all satisfied to shape and mechanical property.
In the step (1), smelted using vacuum induction method, 1590 DEG C of smelting temperature；After 1160 DEG C of rollings and through vehicle
Light processing obtains Ф 80mm pole；
In the step (2), the Ф 80mm pole obtained using step (1) is raw material, using gas-atomized powder method, mist
Change gas is argon gas, and pressure 4.5MPa, 200 DEG C of the molten metal degree of superheat, molten metal flow rate 20Kg per minute, obtaining particle size range is
15 μm -53 μm of alloy powder；
In the step (3), the technological parameter of selective laser fusing forming are as follows: laser power 310W, scanning speed are
1100mm/s, spot diameter 0.14mm, powdering thickness 0.04mm；
In the step (4), the method for annealing are as follows: 350 DEG C of heat preservation 3h in vacuum heat treatment furnace, backfilled with argon are cooling
To room temperature.
Mechanics Performance Testing is carried out to obtained stainless steel material, test method is GB/T228.1 and GB/T229, test
The result shows that: tensile strength reaches 1130MPa~1209MPa at room temperature, and elongation percentage reaches 17%~18.6%, -196 DEG C of temperature
Under low-temperature impact toughness reach 40J~51J.
Embodiment 2
A kind of 06Cr14Ni7Mo stainless steel material.It is 100 parts of calculating with the gross mass of the stainless steel material, each component
Mass content are as follows: 13.60% Cr element, 7.71% Ni element, 0.72% Mo element, 0.031% C element,
0.27% Si element, 0.58% Mn element, remaining is Fe element.
A kind of 06Cr14Ni7Mo stainless steel laser selective melting manufacturing process.Use technological parameter for laser power 300W,
Spot diameter 0.12mm, scanning speed 1000mm/s, powdering thickness 0.04mm prepare 06Cr14Ni7Mo stainless steel component, then
It is placed in 350 DEG C of vacuum drying ovens after keeping the temperature 2h, backfilled with argon is cooled to room temperature.
Obtained stainless steel component, which is used, carries out Mechanics Performance Testing with Lot sample, and test method is GB/T228.1 and GB/
T229, test result show: tensile strength reaches 1153MPa~1190MPa at room temperature, and elongation percentage reaches 17.6%~
18.5%, the low-temperature impact toughness at a temperature of -196 DEG C reaches 40J~43J.
Embodiment 3
A kind of 06Cr14Ni7Mo stainless steel material.It is 100 parts of calculating with the gross mass of the stainless steel material, each component
Mass content are as follows: 14.09% Cr element, 7.52% Ni element, 0.74% Mo element, 0.060% C element,
0.39% Si element, 0.47% Mn element, remaining is Fe element.
A kind of 06Cr14Ni7Mo stainless steel laser selective melting manufacturing process.Use technological parameter for laser power 280W,
Spot diameter 0.12mm, scanning speed 1000mm/s, powdering thickness 0.03mm prepare 06Cr14Ni7Mo stainless steel component, then
It is placed in 320 DEG C of vacuum drying ovens after keeping the temperature 3h, backfilled with argon is cooled to room temperature.
Obtained stainless steel component, which is used, carries out Mechanics Performance Testing with Lot sample, and test method is GB/T228.1 and GB/
T229, test result show: tensile strength reaches 1180MPa~1186MPa at room temperature, and elongation percentage reaches 17.0%~
19.1%, the low-temperature impact toughness at a temperature of -196 DEG C reaches 50J~56J.
Embodiment 4
A kind of 06Cr14Ni7Mo stainless steel material.It is 100 parts of calculating with the gross mass of the stainless steel material, each component
Mass content are as follows: 14.13% Cr element, 7.38% Ni element, 0.71% Mo element, 0.057% C element,
0.37% Si element, 0.44% Mn element, remaining is Fe element.
A kind of 06Cr14Ni7Mo stainless steel laser selective melting manufacturing process.Use technological parameter for laser power 280W,
Spot diameter 0.12mm, scanning speed 900mm/s, powdering thickness 0.03mm prepare 06Cr14Ni7Mo stainless steel component, then set
After keeping the temperature 3h in 300 DEG C of vacuum drying ovens, backfilled with argon is cooled to room temperature.
Obtained stainless steel component, which is used, carries out Mechanics Performance Testing with Lot sample, and test method is GB/T228.1 and GB/
T229, test result show: tensile strength reaches 1160MPa~1180MPa at room temperature, and elongation percentage reaches 18.6%~20% ,-
Low-temperature impact toughness at a temperature of 196 DEG C reaches 40J~45J.
Described in summary, the 06Cr14Ni7Mo stainless steel double through fusing increasing material manufacturing method preparation in selective laser of the invention
Miscellaneous component, at room temperature low temperature of tensile strength while being not less than 17% more than 1100MPa, elongation percentage, at a temperature of -196 DEG C
Impact flexibility is not less than 40J, can meet requirement of the space product to 06Cr14Ni7Mo stainless steel component intensity and plasticity.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (1)
1. a kind of 06Cr14Ni7Mo stainless steel material, it is characterised in that: the component of the stainless steel material include at least Cr element,
Ni element and Mo element；It is 100% calculating, the mass content of each component are as follows: 13.0%- with the gross mass of the stainless steel material
The Ni element of 15.0% Cr element, 6.0%-8.5%, the Mo element of 0.5%-1.0%, the C element of 0-0.08%, 0-
0.75% Si element, the Mn element of 0-0.9%, remaining is Fe element；
The manufacturing process of the 06Cr14Ni7Mo stainless steel material, step include:
(1) component of stainless steel material is mixed according to the ratio, after mixing, carries out vacuum metling, rolling, obtain stick
Material；
(2) bar for obtaining step (1) carries out gas-atomized powder, obtains powder, and the partial size of powder is 15 μm~53 μm；
(3) powder for obtaining step (2) carries out selective laser fusing forming, obtains the 06Cr14Ni7Mo that shape is met the requirements
Stainless steel material；
(4) the 06Cr14Ni7Mo stainless steel material that the shape that step (3) obtains is met the requirements is made annealing treatment, obtains shape
Shape and mechanical property are all satisfied the 06Cr14Ni7Mo stainless steel material of requirement；
In the step (1), carry out using vacuum induction method when vacuum metling, 1580 DEG C~1600 DEG C of smelting temperature；
In the step (1), temperature when being rolled is 1140 DEG C~1160 DEG C；
In the step (1), rolling processes through vehicle light after terminating and obtains bar；
In the step (2), when carrying out gas-atomized powder, atomization gas is argon gas, pressure 3.5MPa~5MPa, molten metal overheat
100 DEG C~300 DEG C of degree, molten metal flow rate 10Kg~20Kg per minute；
In the step (3), the technological parameter of selective laser fusing forming: laser power 280W~310W, scanning speed are
900mm/s~1100mm/s, spot diameter 0.12mm~0.14mm, powdering thickness 0.03mm-0.06mm；
In the step (4), the method for annealing are as follows: 300 DEG C~350 DEG C heat preservation 2h~3h in vacuum heat treatment furnace are recharged
Argon gas is cooled to room temperature.
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| CN109365809B (en) * | 2018-11-21 | 2021-03-26 | 西安航天发动机有限公司 | Heat treatment method for forming 06Cr14Ni7Mo martensitic stainless steel by laser melting deposition |
| CN109338357B (en) * | 2018-11-23 | 2021-03-05 | 西安航天发动机有限公司 | Laser melting deposition repair method for metal casting defect part |
| 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 |
| CN113579238A (en) * | 2021-07-27 | 2021-11-02 | 陕西科技大学 | Preparation method of austenitic stainless steel powder for 3D printing |
| CN113560575B (en) * | 2021-07-29 | 2023-06-06 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for forming 05Cr17Ni4Cu4Nb stainless steel induced draft tube by selective laser melting |
| CN114101688A (en) * | 2021-11-02 | 2022-03-01 | 西安航天发动机有限公司 | Preparation method of stainless steel component |
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| JPS60169550A (en) * | 1984-02-15 | 1985-09-03 | Ishikawajima Harima Heavy Ind Co Ltd | Stainless steel having resistance to hydrogen sulfide |
| CN1032819A (en) * | 1987-10-20 | 1989-05-10 | 国家机械工业委员会沈阳铸造研究所 | Physical strengthening for low carbon martensitic stainless steel |
| CN103695899A (en) * | 2013-12-20 | 2014-04-02 | 北矿新材科技有限公司 | Iron-based laser cladding powder for repairing wear-resistant and corrosion-resistant cladding layer and preparation method thereof |
| CN105562691A (en) * | 2015-12-23 | 2016-05-11 | 华中科技大学 | 3D printing preparation method for injection mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60169550A (en) * | 1984-02-15 | 1985-09-03 | Ishikawajima Harima Heavy Ind Co Ltd | Stainless steel having resistance to hydrogen sulfide |
| CN1032819A (en) * | 1987-10-20 | 1989-05-10 | 国家机械工业委员会沈阳铸造研究所 | Physical strengthening for low carbon martensitic stainless steel |
| CN103695899A (en) * | 2013-12-20 | 2014-04-02 | 北矿新材科技有限公司 | Iron-based laser cladding powder for repairing wear-resistant and corrosion-resistant cladding layer and preparation method thereof |
| CN105562691A (en) * | 2015-12-23 | 2016-05-11 | 华中科技大学 | 3D printing preparation method for injection mold |
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