CN108315667A - A kind of 03Cr13Ni5Co9Mo5 stainless steel materials and its Laser Melting Deposition manufacturing process - Google Patents

A kind of 03Cr13Ni5Co9Mo5 stainless steel materials and its Laser Melting Deposition manufacturing process Download PDF

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CN108315667A
CN108315667A CN201711448842.3A CN201711448842A CN108315667A CN 108315667 A CN108315667 A CN 108315667A CN 201711448842 A CN201711448842 A CN 201711448842A CN 108315667 A CN108315667 A CN 108315667A
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stainless steel
manufacturing process
powder
lasers
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CN108315667B (en
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李护林
杨欢庆
周亚雄
宋梦华
王琳
雷玥
陈振宇
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Xian Aerospace Engine Co Ltd
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    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B22F9/00—Making metallic powder or suspensions thereof
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    • 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
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    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
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    • C21—METALLURGY OF IRON
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    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
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    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
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    • C21D6/008—Heat treatment of ferrous alloys containing Si
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    • C22C38/00—Ferrous alloys, e.g. steel alloys
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    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
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    • B22F2003/248—Thermal after-treatment
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Abstract

The present invention discloses a kind of 03Cr13Ni5Co9Mo5 stainless steel materials and its Laser Melting Deposition manufacturing process.Alloy constituent (mass fraction) is：12.5% 13.5% Cr elements, 4.5% 6.0% Ni elements, 4.0% 5.0% Mo elements, 8.0% 9.0% Co elements, 0 0.04% C element, 0 0.5% Si elements, 0 0.7% Mn elements, remaining is Fe elements.Vacuum metling and gas-atomized powder are carried out first, obtain the alloy powder that grain size is 75 μm 187 μm.Laser Melting Deposition technological parameter is：Laser power 2600W~3000W, sweep span 2mm~2.5mm, sweep speed 800mm/min~1100mm/min, powder sending quantity 20g/min~30g/min, lift height 0.7mm~1mm.Component after forming is made annealing treatment, and 450 DEG C~560 DEG C keep the temperature 2h~4h, air-cooled.After above-mentioned heat treatment, room temperature tensile intensity is more than 1550MPa, yield strength is not less than 1350MPa, elongation percentage is not less than 45J not less than 10%, impact flexibility (KU2), it can be used for substituting forging and molding unimach, meet the requirement that part space flight key load component low cost quickly directly manufactures.

Description

A kind of 03Cr13Ni5Co9Mo5 stainless steel materials and its Laser Melting Deposition forming Method
Technical field
The present invention relates to a kind of 03Cr13Ni5Co9Mo5 stainless steel materials and its Laser Melting Deposition manufacturing process, belong to Metal-forming techniques field.
Background technology
For a new generation of China liquid oxygen/kerosene high pressure staged combustion cycle engine compared to existing Long March Engine Series, thrust improves 1 Times.For the crucial load component such as engine gimbal ring stand, the 1200MPa ranks 30CrMnSiA selected at present is high-strength Degree steel has been unable to meet development demand；And 1500MPa ranks unimach is due to improving metallic alloying element type at present And content, the easily cracked and larger problem of deflection in forging or Laser Melting Deposition forming process.
Invention content
The technical problem to be solved by the present invention is to：It is proposed a kind of 03Cr13Ni5Co9Mo5 stainless steel lasers melt deposition Manufacturing process substitutes forging and molding superhigh intensity steel making key load component, solves unimach material in laser fusion Crackle and the larger problem of deflection are also easy to produce in deposition process,
Technical solution of the invention is：
The component of a kind of 03Cr13Ni5Co9Mo5 stainless steel materials, the stainless steel material includes at least Cr elements, Ni members Element, Co elements and Mo elements；It is 100 parts of calculating with the gross mass of the stainless steel material, the mass content of each key component is： The Cr elements of 12.5%-13.5%, the Ni elements of 4.5%-6.0%, the Mo elements of 4.0%-5.0%, the Co of 8.0%-9.0% Element, the C element of 0-0.04%, the Si elements of 0-0.5%, the Mn elements of 0-0.7%, remaining is Fe elements.
A kind of the step of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process, this method includes：
(1) component proportion of stainless steel material is mixed, after mixing, carries out vacuum metling, rolling, obtain stick Material；
(2) gas-atomized powder is carried out to the bar that step (1) obtains, obtains powder, the grain size of powder is 75 μm~187 μ m；
(3) powder for obtaining step (2) carries out selective laser fusing forming, obtains what shape was met the requirements 03Cr13Ni5Co9Mo5 stainless steel materials；
(4) the 03Cr13Ni5Co9Mo5 stainless steel materials that the shape that step (3) obtains is met the requirements are carried out at annealing Reason, obtains shape and mechanical property is satisfied by the 03Cr13Ni5Co9Mo5 stainless steel materials of requirement.
In the step (1), carry out using vacuum induction method, 1580 DEG C~1600 DEG C of smelting temperature when vacuum metling； Temperature when being rolled is 1140 DEG C~1160 DEG C, and Ф 80mm poles are obtained into driving light processing after rolling；
In the step (2), using 03Cr13Ni5Co9Mo5 stainless steel bars as raw material, using gas-atomized powder method, Atomization gas is 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 75 μm~187 μm；
In the step (3), Laser Melting Deposition forming parameters are：Laser power 2600W~3000W, scanning speed Spend 800mm/min~1100mm/min, sweep span 2mm~2.5mm, powder sending quantity 20g/min~30g/min, lift height 0.7mm~1mm；
In the step (4), the method for annealing is：450 DEG C~560 DEG C keep the temperature 4h~6h, air-cooled.
Advantageous effect
(1) 03Cr13Ni5Co9Mo5 stainless steel lasers melt deposition manufacturing process proposed by the present invention, mainly solves super High strength steel material is also easy to produce crackle and deflection larger problem during Laser Melting Deposition, realizes molten using laser Change deposition formation 03Cr13Ni5Co9Mo5 stainless steels and substitutes forging and molding superhigh intensity steel making key load component；
(3) formed parts that prepare of the present invention, room temperature tensile intensity are more than that 1550MPa, yield strength are not less than 1350MPa, elongation percentage are not less than 45J not less than 10%, impact flexibility (KU2), and it is low can to meet part space flight key load component The requirement that cost quickly directly manufactures.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.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 domain.
Embodiment 1
A kind of 03Cr13Ni5Co9Mo5 stainless steel materials, the mass content of each key component are：13.10% Cr elements, 5.84% Ni elements, 4.29% Mo elements, 8.67% Co elements, 0.022% C element, 0.29% Si elements, 0.36% Mn elements, remaining is Fe elements.
A kind of the step of 03Cr13Ni5Co9Mo5 stainless steels melt deposition manufacturing process, 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, the grain size of powder is 75 μm~187 μ m；
(3) powder for obtaining step (2) carries out Laser Melting Deposition forming, obtains what shape was met the requirements 03Cr13Ni5Co9Mo5 stainless steel materials；
(4) the 03Cr13Ni5Co9Mo5 stainless steel materials that the shape that step (3) obtains is met the requirements are carried out at annealing Reason, obtains shape and mechanical property is satisfied by the 03Cr13Ni5Co9Mo5 stainless steel materials of requirement.
In the step (1), smelted using vacuum induction method, 1600 DEG C of smelting temperature；After 1160 DEG C of rollings and through vehicle Light processing obtains Ф 80mm poles；
In the step (2), the Ф 80mm poles obtained using step (1) is raw material, using gas-atomized powder method, mist Change gas is argon gas, and pressure 5MPa, 200 DEG C of the molten metal degree of superheat, molten metal flow rate 20Kg per minute, it is 75 to obtain particle size range μm~187 μm of alloy powder；
In the step (3), the technological parameter of Laser Melting Deposition forming is：Laser power 3000W, sweep speed 1100mm/min, sweep span 2.5mm, powder sending quantity 30g/min, thickness 1mm；
In the step (4), the method for annealing is：550 DEG C keep the temperature 5h, air-cooled.
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：Room temperature tensile intensity reaches 1574MPa~1599MPa, and yield strength reaches 1376MPa~1389MPa, elongation percentage Reach 14.7%~15.0%, impact flexibility reaches 50J~53J.
Embodiment 2
A kind of 03Cr13Ni5Co9Mo5 stainless steel materials, the mass content of each key component are：13.16% Cr elements, 5.94% Ni elements, 4.24% Mo elements, 8.43% Co elements, 0.033% C element, 0.27% Si elements, 0.45% Mn elements, remaining is Fe elements.
A kind of 03Cr13Ni5Co9Mo5 stainless steels melt deposition manufacturing process.Using laser power 2800W, sweep speed It is prepared by the technological parameter of 1000mm/min, sweep span 2.5mm, powder sending quantity 30g/min, thickness 1mm 03Cr13Ni5Co9Mo5 stainless steel components, it is air-cooled after then keeping the temperature 5h at 510 DEG C.
Obtained stainless steel component 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 1594MPa~1599MPa at room temperature, yield strength reach 1395MPa~ 1414MPa, elongation percentage reach 14.6%~15.6%, and impact flexibility reaches 52J~55J.
Embodiment 3
A kind of 03Cr13Ni5Co9Mo5 stainless steel materials, the mass content of each key component are：13.34% Cr elements, 5.72% Ni elements, 4.47% Mo elements, 8.60% Co elements, 0.027% C element, 0.48% Si elements, 0.37% Mn elements, remaining is Fe elements.
A kind of 03Cr13Ni5Co9Mo5 stainless steels melt deposition manufacturing process, using laser power 2600W, sweep speed The technological parameter of 900mm/min, sweep span 2mm, powder sending quantity 25g/min, thickness 0.7mm prepare 03Cr13Ni5Co9Mo5 not Become rusty steel member, air-cooled after then keeping the temperature 5h at 480 DEG C.
Obtained stainless steel component 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 1563MPa~1596MPa at room temperature, yield strength reach 1382MPa~ 1409MPa, elongation percentage reach 15.2%~16.2%, and impact flexibility reaches 50J~55J.
Embodiment 4
A kind of 03Cr13Ni5Co9Mo5 stainless steel materials, the mass content of each key component are：13.13% Cr elements, 5.70% Ni elements, 4.46% Mo elements, 8.85% Co elements, 0.028% C element, 0.32% Si elements, 0.36% Mn elements, remaining is Fe elements.
A kind of 03Cr13Ni5Co9Mo5 stainless steels melt deposition manufacturing process, using laser power 2600W, sweep speed The technological parameter of 800mm/min, sweep span 2mm, powder sending quantity 20g/min, thickness 0.7mm prepare 03Cr13Ni5Co9Mo5 not Become rusty steel member, air-cooled after then keeping the temperature 5h at 450 DEG C.
Obtained stainless steel component 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 1556MPa~1558MPa at room temperature, yield strength reach 1328MPa~ 1355MPa, elongation percentage reach 13.3%~13.8%, and impact flexibility reaches 46J~48J.
Described in summary, prepared by the 03Cr13Ni5Co9Mo5 stainless steel laser melt deposition increasing material manufacturing methods through the present invention 03Cr13Ni5Co9Mo5 stainless steel complex components, room temperature tensile intensity is more than that 1550MPa, yield strength are not less than 1350MPa, elongation percentage are not less than 45J not less than 10%, impact flexibility (KU2), can be used for substituting forging and molding unimach, Meet the requirement that part space flight key load component low cost quickly directly manufactures.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in 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 the substantive content of the present invention.

Claims (8)

1. a kind of 03Cr13Ni5Co9Mo5 stainless steel materials, it is characterised in that：The component of the stainless steel material includes at least Cr members Element, Ni elements, Co elements and Mo elements；It is 100 parts of calculating with the gross mass of the stainless steel material, the quality of each key component contains Amount is：The Cr elements of 12.5%-13.5%, the Ni elements of 4.5%-6.0%, the Mo elements of 4.0%-5.0%, 8.0%- 9.0% Co elements, the C element of 0-0.04%, the Si elements of 0-0.5%, the Mn elements of 0-0.7%, remaining is Fe elements.
2. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process, it is characterised in that the step of this method wraps It includes：
(1) component proportion of stainless steel material is mixed, after mixing, carries out vacuum metling, rolling, obtain bar；
(2) gas-atomized powder is carried out to the bar that step (1) obtains, obtains powder, the grain size of powder is 75 μm~187 μm；
(3) powder for obtaining step (2) carries out selective laser fusing forming, obtains what shape was met the requirements 03Cr13Ni5Co9Mo5 stainless steel materials；
(4) the 03Cr13Ni5Co9Mo5 stainless steel materials that the shape that step (3) obtains is met the requirements are made annealing treatment, is obtained The 03Cr13Ni5Co9Mo5 stainless steel materials of requirement are satisfied by shape and mechanical property.
3. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process according to claim 2, feature It is：In the step (1), carry out using vacuum induction method, 1580 DEG C~1600 DEG C of smelting temperature when vacuum metling.
4. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process according to claim 2, feature It is：In the step (1), temperature when being rolled is 1140 DEG C~1160 DEG C.
5. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process according to claim 2, feature It is：In the step (1), bar is obtained into driving light processing after rolling.
6. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process according to claim 2, feature It is：In the step (2), when carrying out gas-atomized powder, atomization gas is argon gas, pressure 3.5MPa~5MPa, molten metal mistake 100 DEG C~300 DEG C of temperature, molten metal flow rate 10Kg~20Kg per minute.
7. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process according to claim 2, feature It is：In the step (3), Laser Melting Deposition forming parameters are：Laser power 2600W~3000W, sweep speed 800mm/min~1100mm/min, sweep span 2mm~2.5mm, powder sending quantity 20g/min~30g/min, lift height 0.7mm ~1mm.
8. a kind of 03Cr13Ni5Co9Mo stainless steel lasers melt deposition manufacturing process according to claim 2, feature It is：In the step (4), the method for annealing is：450 DEG C~560 DEG C keep the temperature 4h~6h, air-cooled.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112846229A (en) * 2021-01-04 2021-05-28 西安航天发动机有限公司 Laser material increase and decrease manufacturing method for large-size interlayer straight-groove annular component
CN113560575A (en) * 2021-07-29 2021-10-29 中国航发沈阳黎明航空发动机有限责任公司 Method for selective laser melting forming of 05Cr17Ni4Cu4Nb stainless steel bleed air pipe
CN114318330A (en) * 2021-12-14 2022-04-12 江苏紫金动力股份有限公司 Method for strengthening engine cylinder sleeve

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