CN109365826A - The compound increasing material manufacturing process of dissimilar material thrust chamber - Google Patents
The compound increasing material manufacturing process of dissimilar material thrust chamber Download PDFInfo
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- CN109365826A CN109365826A CN201811443240.3A CN201811443240A CN109365826A CN 109365826 A CN109365826 A CN 109365826A CN 201811443240 A CN201811443240 A CN 201811443240A CN 109365826 A CN109365826 A CN 109365826A
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
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- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B22—CASTING; POWDER METALLURGY
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- 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]
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
- B22F10/322—Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B22F10/36—Process control of energy beam parameters
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- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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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
- B22F3/24—After-treatment of workpieces or articles
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- 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
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- 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
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a kind of compound increasing material manufacturing process of dissimilar material thrust chamber, which includes the following steps: 1) to design and optimizes thrust chamber inner casing threedimensional model；2) thrust chamber inner casing blank is formed；3) it post-processes: the surface of the resulting thrust chamber inner casing blank of step 2) being subjected to blast grinding process, and is heat-treated in 1~48 hour after shaping, part thrust chamber inner casing is obtained；4) it designs and optimizes thrust chamber enclosure threedimensional model；5) thrust chamber blank is formed；6) it is heat-treated: the resulting thrust chamber blank of step 5) is heat-treated in 1~48 hour after shaping；7) machine adds.The compound increasing material manufacturing process of dissimilar material thrust chamber of the invention is combined using SLM increases material manufacturing technology and DMLS increases material manufacturing technology, first form thrust chamber inner casing blank, again in the outer molding thrust chamber enclosure of thrust chamber inner casing to form dissimilar material thrust chamber, this method is high in machining efficiency, it is ensured that machining accuracy.
Description
Technical field
The present invention relates to the technical fields of thrust chamber forming, shape in particular to a kind of compound increasing material of dissimilar material thrust chamber
Method.
Background technique
With the development of technology, the structure of liquid rocket engine thrust chamber is continued to optimize, lightweight, integrated design reason
The involvement of thought, the technical requirements manufactured to it are higher and higher.New liquid thrust chamber is by copper alloy inner wall
Formed with stainless steel outer wall, but due to its internal complicated water runner design, traditional processing method is more complex, processing efficiency compared with
Low, precision not can guarantee, and stock utilization is low, processing cost is high, and the period is long, because due to be unable to satisfy requirement.
Summary of the invention
The object of the invention is to provide a kind of high in machining efficiency, reliable in quality dissimilar material to overcome above-mentioned deficiency
The compound increasing material manufacturing process of thrust chamber.
To achieve the above object, the compound increasing material manufacturing process of a kind of dissimilar material thrust chamber provided by the present invention, including
Following steps:
1) it designs and optimizes thrust chamber inner casing threedimensional model: based on SLM increases material manufacturing technology, skill being melted according to selective laser
Minimal characteristic requirement of the art to threedimensional model, utilizes shell threedimensional model in three-dimensional software design thrust room；
Wherein, design forming direction: the thrust chamber inner casing bottom surface and shaping substrate in thrust chamber inner casing threedimensional model are flat
Row；
2) it forms thrust chamber inner casing blank: the thrust chamber inner casing threedimensional model in step 1) is imported into 3 D-printing editor
In software, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and will be each
The two dimensional slice data of layer imports SLM increasing material manufacturing equipment, selective laser melting process parameter is controlled, using copper alloy powder
It carries out selective laser and melts stereo shaping thrust chamber inner casing blank；
3) post-process: the surface of the resulting thrust chamber inner casing blank of step 2) be subjected to blast grinding process, and at
It is heat-treated in 1~48 hour after type, obtains part thrust chamber inner casing；
4) it designs and optimizes thrust chamber enclosure threedimensional model: based on DMLS increases material manufacturing technology, according to laser sintering technology
Minimal characteristic requirement to threedimensional model, utilizes three-dimensional software design thrust chamber enclosure threedimensional model；
5) it forms thrust chamber blank: the thrust chamber enclosure threedimensional model in step 4) is imported into 3 D-printing software for editing
In, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and by each layer
Two dimensional slice data imports DMLS increasing material manufacturing equipment, by the part thrust chamber inner casing transverse jig of step 3) forming in equipment
In, laser sintering process parameter is controlled, laser sintered stereo shaping thrust chamber enclosure is carried out using powder of stainless steel, obtains thrust
Room blank；
6) it is heat-treated: the resulting thrust chamber blank of step 5) is heat-treated in 1~48 hour after shaping；
7) machine adds: to step 6), treated that thrust chamber blank machine adds removal shaping substrate, then to thrust chamber blank
The outer wall of part carries out finishing and forms the dissimilar material thrust chamber with copper alloy inner casing and stainless steel casing.
Further, in the step 2), copper alloy powder partial size is 20~50 μm.
Further, in the step 2), control selective laser melting process parameter it is specific as follows: lift height be 40~
60 μm, 100~120 DEG C of preheating temperature, the offset of X-axis, Y-axis is 0.05~0.15%.
Preferably, in the step 2), control selective laser melting process parameter is specific as follows: lift height is 50 μm,
110 DEG C of preheating temperature, the offset of X-axis, Y-axis is 0.1%.
Further, in the step 3), the blast pressure that blast grinding process uses is 0.45~0.8MPa, quartz
Fineness of sand is 80~120 mesh.
Further, it in the step 3), is heat-treated specific as follows: being warming up to 440~460 DEG C with furnace, heat preservation 90~
After being cooled to 250~300 DEG C in 1200min, 1~2Bar atmosphere, comes out of the stove and be air-cooled to room temperature.
Further, in the step 5), powder of stainless steel granularity is 120~150 mesh.
Still further, control laser sintering process parameter is specific as follows: pulse laser average laser in the step 5)
Power is 1500~1800W, and scanning speed is 2500~3500mm/s, and it is 5~8L/min, laser that argon gas, which protects gas gas flow,
Spot diameter is 2~3mm.
Preferably, in the step 5), control laser sintering process parameter is specific as follows: pulse laser average laser power
For 1600W, scanning speed 3000mm/s, it is 8L/min, laser spot diameter 2mm that argon gas, which protects gas gas flow,.
Further, it in the step 6), is heat-treated specific as follows: being warming up to 440~460 DEG C with furnace, heat preservation 90~
After being cooled to 250~300 DEG C in 1200min, 1~2Bar atmosphere, comes out of the stove and be air-cooled to room temperature.
Compared with prior art, the present invention has the advantage that
First, the compound increasing material manufacturing process of dissimilar material thrust chamber of the invention uses SLM increases material manufacturing technology and DMLS
Increases material manufacturing technology combines, first form thrust chamber inner casing blank, then thrust chamber inner casing outer molding thrust chamber enclosure from
And dissimilar material thrust chamber is formed, this method is high in machining efficiency, it is ensured that machining accuracy.
Second, being carried out in selective laser fusing stereo shaping thrust chamber in manufacturing process of the invention using copper alloy powder
Shell blank carries out laser sintered stereo shaping thrust chamber blank, stock utilization height, processing cost using powder of stainless steel
It is low, and the period is short.
It, can be with third, carry out blast grinding process to the surface of thrust chamber inner casing blank in manufacturing process of the invention
So that part is met the requirement of surface smoothness, and be heat-treated in 1~48 hour after shaping, the qualification of product can be improved
Rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dissimilar material thrust chamber in 1 in the embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of Fig. 1；
Fig. 3 is the enlarged structure schematic diagram in Fig. 2 at I；
Fig. 4 is the schematic diagram of inner casing SLM forming in the embodiment of the present invention；
Fig. 5 is the schematic diagram of shell DMLS forming in the embodiment of the present invention；
In figure, dissimilar material thrust chamber 1, thrust chamber inner casing 1.1, thrust chamber enclosure 1.2, shaping substrate 2.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below.
Embodiment 1:
The compound increasing material manufacturing process of dissimilar material thrust chamber of the present invention, includes the following steps:
1) it designs and optimizes thrust chamber inner casing threedimensional model: carrying out three-dimensional for thrust chamber inner casing as shown in Fig. 1 and build
Mould, wherein dimensional parameters are as follows: thickness >=1.5mm of thickness >=1mm of inner wall internal layer b, inner wall outside c, the wide d >=1.8mm of muscle,
Based on SLM increases material manufacturing technology, is required according to minimal characteristic of the selective laser smelting technology to threedimensional model, utilize three-dimensional software
Shell threedimensional model in design thrust room, optimizes model according to increasing material manufacturing feature；Design forming direction: thrust chamber inner casing
1.1 bottom surface of thrust chamber inner casing in threedimensional model is parallel with shaping substrate 2；
2) it forms thrust chamber inner casing blank: the thrust chamber inner casing threedimensional model in step 1) is imported into 3 D-printing editor
In software, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and will be each
The two dimensional slice data of layer imports metal powder laser selective melting system, controls selective laser melting process parameter, copper alloy
Powder diameter is 40 μm, and lift height is 50 μm, and 110 DEG C of preheating temperature, the offset of X-axis, Y-axis is 0.1%, is then swashed
Light selective melting stereo shaping thrust chamber inner casing blank；
3) post-process: the surface of the resulting thrust chamber inner casing blank of step 2) be subjected to blast grinding process, and at
It is heat-treated in 1 hour after type: where the blast pressure that blast grinding process uses is 0.6MPa, quartz sand size 100
Mesh；The heat treatment process of copper alloy powder: being warming up to 450 DEG C with furnace, keeps the temperature 800min, after being cooled to 300 DEG C in 2Bar atmosphere,
It comes out of the stove and is air-cooled to room temperature, obtain part thrust chamber inner casing 1.1；
4) it designs and optimizes thrust chamber enclosure threedimensional model: based on DMLS increases material manufacturing technology, according to laser sintering technology
Minimal characteristic requirement to threedimensional model, using three-dimensional software design thrust chamber enclosure threedimensional model, wherein dimensional parameters are as follows:
Thickness >=3mm of outer wall a；
5) it forms thrust chamber blank: the thrust chamber enclosure threedimensional model in step 4) is imported into 3 D-printing software for editing
In, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and by each layer
Two dimensional slice data import DMLS increasing material manufacturing equipment, by machine plus after thrust chamber interior walls part transverse jig in a device, adopt
With powder of stainless steel, laser sintering process parameter is controlled, powder of stainless steel granularity is 140 mesh, pulse laser average laser power
For 1600W, scanning speed 3000mm/s, it is 8L/min, laser spot diameter 2mm that argon gas, which protects gas gas flow, is carried out
Laser sintered stereo shaping thrust chamber enclosure 1.2, obtains thrust chamber blank；
6) it is heat-treated: the resulting thrust chamber blank of step 5) being heat-treated in 48 hours after shaping: with furnace liter
Temperature keeps the temperature 800min and comes out of the stove after being cooled to 300 DEG C in 2Bar atmosphere and be air-cooled to room temperature to 450 DEG C；
7) machine adds: to step 6) treated thrust chamber blank machine adds removal shaping substrate 2, then to thrust chamber blank
The outer wall of part carries out finishing and forms the dissimilar material thrust chamber 1 with the shell of copper alloy inner casing and stainless steel.
Embodiment 2:
The compound increasing material manufacturing process of dissimilar material thrust chamber of the present invention, includes the following steps:
1) it designs and optimizes thrust chamber inner casing threedimensional model: carrying out three-dimensional for thrust chamber inner casing as shown in Fig. 1 and build
Mould, wherein dimensional parameters are as follows: thickness >=1.5mm of thickness >=1mm of inner wall internal layer b, inner wall outside c, the wide d >=1.8mm of muscle,
Based on SLM increases material manufacturing technology, is required according to minimal characteristic of the selective laser smelting technology to threedimensional model, utilize three-dimensional software
Shell threedimensional model in design thrust room, optimizes model according to increasing material manufacturing feature；Design forming direction: thrust chamber inner casing
1.1 bottom surface of thrust chamber inner casing in threedimensional model is parallel with shaping substrate 2；
2) it forms thrust chamber inner casing blank: the thrust chamber inner casing threedimensional model in step 1) is imported into 3 D-printing editor
In software, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and will be each
The two dimensional slice data of layer imports metal powder laser selective melting system, controls selective laser melting process parameter, copper alloy
Powder diameter is 20 μm, and lift height is 40 μm, and 100 DEG C of preheating temperature, the offset of X-axis, Y-axis is 0.05%, is then carried out
Melt stereo shaping thrust chamber inner casing blank in selective laser；
3) post-process: the surface of the resulting thrust chamber inner casing blank of step 2) be subjected to blast grinding process, and at
It is heat-treated in 1 hour after type: where the blast pressure that blast grinding process uses is 0.45MPa, quartz sand size 80
Mesh；The heat treatment process of copper alloy powder: being warming up to 440 DEG C with furnace, keeps the temperature 90min, after being cooled to 250 DEG C in 1Bar atmosphere,
It comes out of the stove and is air-cooled to room temperature, obtain part thrust chamber inner casing 1.1；
4) it designs and optimizes thrust chamber enclosure threedimensional model: based on DMLS increases material manufacturing technology, according to laser sintering technology
Minimal characteristic requirement to threedimensional model, using three-dimensional software design thrust chamber enclosure threedimensional model, wherein dimensional parameters are as follows:
Thickness >=3mm of outer wall a；
5) it forms thrust chamber blank: the thrust chamber enclosure threedimensional model in step 4) is imported into 3 D-printing software for editing
In, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and by each layer
Two dimensional slice data import DMLS increasing material manufacturing equipment, by machine plus after thrust chamber interior walls part transverse jig in a device, adopt
With powder of stainless steel, laser sintering process parameter is controlled, powder of stainless steel granularity is 120 mesh, pulse laser average laser power
For 1500W, scanning speed 2500mm/s, it is 5L/min, laser spot diameter 2mm that argon gas, which protects gas gas flow, is carried out
Laser sintered stereo shaping thrust chamber enclosure 1.2, obtains thrust chamber blank；
6) it is heat-treated: the resulting thrust chamber blank of step 5) being heat-treated in 1 hour after shaping: being heated up with furnace
To 440 DEG C, keeps the temperature 90min and come out of the stove after being cooled to 250 DEG C in 1Bar atmosphere and be air-cooled to room temperature；
7) machine adds: to step 6) treated thrust chamber blank machine adds removal shaping substrate 2, then to thrust chamber blank
The outer wall of part carries out finishing and forms the dissimilar material thrust chamber 1 with the shell of copper alloy inner casing and stainless steel.
Embodiment 3:
The compound increasing material manufacturing process of dissimilar material thrust chamber of the present invention, includes the following steps:
1) it designs and optimizes thrust chamber inner casing threedimensional model: carrying out three-dimensional for thrust chamber inner casing as shown in Fig. 1 and build
Mould, wherein dimensional parameters are as follows: thickness >=1.5mm of thickness >=1mm of inner wall internal layer b, inner wall outside c, the wide d >=1.8mm of muscle,
Based on SLM increases material manufacturing technology, is required according to minimal characteristic of the selective laser smelting technology to threedimensional model, utilize three-dimensional software
Shell threedimensional model in design thrust room, optimizes model according to increasing material manufacturing feature；Design forming direction: thrust chamber inner casing
1.1 bottom surface of thrust chamber inner casing in threedimensional model is parallel with shaping substrate 2；
2) it forms thrust chamber inner casing blank: the thrust chamber inner casing threedimensional model in step 1) is imported into 3 D-printing editor
In software, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and will be each
The two dimensional slice data of layer imports metal powder laser selective melting system, controls selective laser melting process parameter, copper alloy
Powder diameter is 50 μm, and lift height is 60 μm, and 120 DEG C of preheating temperature, the offset of X-axis, Y-axis is 0.15%, is then carried out
Melt stereo shaping thrust chamber inner casing blank in selective laser；
3) post-process: the surface of the resulting thrust chamber inner casing blank of step 2) be subjected to blast grinding process, and at
It is heat-treated in 1 hour after type: where the blast pressure that blast grinding process uses is 0.8MPa, quartz sand size 120
Mesh；The heat treatment process of copper alloy powder: being warming up to 460 DEG C with furnace, keeps the temperature 1200min, is cooled to 300 DEG C in 2Bar atmosphere
Afterwards, it comes out of the stove and is air-cooled to room temperature, obtain part thrust chamber inner casing 1.1；
4) it designs and optimizes thrust chamber enclosure threedimensional model: based on DMLS increases material manufacturing technology, according to laser sintering technology
Minimal characteristic requirement to threedimensional model, using three-dimensional software design thrust chamber enclosure threedimensional model, wherein dimensional parameters are as follows:
Thickness >=3mm of outer wall a；
5) it forms thrust chamber blank: the thrust chamber enclosure threedimensional model in step 4) is imported into 3 D-printing software for editing
In, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and by each layer
Two dimensional slice data import DMLS increasing material manufacturing equipment, by machine plus after thrust chamber interior walls part transverse jig in a device, adopt
With powder of stainless steel, laser sintering process parameter is controlled, powder of stainless steel granularity is 150 mesh, pulse laser average laser power
For 1800W, scanning speed 3500mm/s, it is 8L/min, laser spot diameter 3mm that argon gas, which protects gas gas flow, is carried out
Laser sintered stereo shaping thrust chamber enclosure 1.2, obtains thrust chamber blank；
6) it is heat-treated: the resulting thrust chamber blank of step 5) being heat-treated in 48 hours after shaping: with furnace liter
Temperature keeps the temperature 1200min and comes out of the stove after being cooled to 300 DEG C in 2Bar atmosphere and be air-cooled to room temperature to 460 DEG C；
7) machine adds: to step 6) treated thrust chamber blank machine adds removal shaping substrate 2, then to thrust chamber blank
The outer wall of part carries out finishing and forms the dissimilar material thrust chamber 1 with the shell of copper alloy inner casing and stainless steel.
The above description is merely a specific embodiment, it is noted that anyone skilled in the art exists
Disclosed herein technical scope in, any changes or substitutions that can be easily thought of, should all cover protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of compound increasing material manufacturing process of dissimilar material thrust chamber, characterized by the following steps:
1) it designs and optimizes thrust chamber inner casing threedimensional model: based on SLM increases material manufacturing technology, according to selective laser smelting technology pair
The minimal characteristic requirement of threedimensional model, utilizes shell threedimensional model in three-dimensional software design thrust room；Wherein, forming direction is designed:
Thrust chamber inner casing (1.1) bottom surface in thrust chamber inner casing threedimensional model is parallel with shaping substrate (2)；
2) it forms thrust chamber inner casing blank: the thrust chamber inner casing threedimensional model in step 1) is imported into 3 D-printing software for editing
In, two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and by each layer
Two dimensional slice data imports SLM increasing material manufacturing equipment, controls selective laser melting process parameter, is swashed using copper alloy powder
Light selective melting stereo shaping thrust chamber inner casing blank；
3) it post-processes: the surface of the resulting thrust chamber inner casing blank of step 2) is subjected to blast grinding process, and after shaping 1
It is heat-treated in~48 hours, obtains part thrust chamber inner casing (1.1)；
4) it designs and optimizes thrust chamber enclosure threedimensional model: based on DMLS increases material manufacturing technology, according to laser sintering technology to three
The minimal characteristic requirement of dimension module, utilizes three-dimensional software design thrust chamber enclosure threedimensional model；
5) it forms thrust chamber blank: the thrust chamber enclosure threedimensional model in step 4) is imported in 3 D-printing software for editing,
Two dimension slicing layering is carried out to the threedimensional model by Slice Software, obtains the two dimensional slice data of each layer, and by the two of each layer
It ties up slice of data and imports DMLS increasing material manufacturing equipment, part thrust chamber inner casing (1.1) transverse jig that step 3) shapes is being set
In standby, laser sintering process parameter is controlled, laser sintered stereo shaping thrust chamber enclosure (1.2) is carried out using powder of stainless steel,
Obtain thrust chamber blank；
6) it is heat-treated: the resulting thrust chamber blank of step 5) is heat-treated in 1~48 hour after shaping；
7) machine adds: to step 6) treated thrust chamber blank machine adds removal shaping substrate (2), then to thrust chamber blank
Outer wall carry out finishing formed have copper alloy inner casing and stainless steel casing dissimilar material thrust chamber (1).
2. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step 2)
In, copper alloy powder partial size is 20~50 μm.
3. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step 2)
In, control selective laser melting process parameter it is specific as follows: lift height be 40~60 μm, 100~120 DEG C of preheating temperature, X
The offset of axis, Y-axis is 0.05~0.15%.
4. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 3, it is characterised in that: the step 2)
In, control selective laser melting process parameter it is specific as follows: lift height be 50 μm, 110 DEG C of preheating temperature, X-axis, Y-axis it is inclined
Shifting is 0.1%.
5. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step 3)
In, for the blast pressure that blast grinding process uses for 0.45~0.8MPa, quartz sand size is 80~120 mesh.
6. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step 3)
In, it is heat-treated specific as follows: being warming up to 440~460 DEG C with furnace, keep the temperature 90~1200min, be cooled to 250 in 1~2Bar atmosphere
After~300 DEG C, comes out of the stove and be air-cooled to room temperature.
7. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step 5)
In, powder of stainless steel granularity is 120~150 mesh.
8. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step 5)
In, control laser sintering process parameter is specific as follows: pulse laser average laser power is 1500~1800W, and scanning speed is
2500~3500mm/s, it is 5~8L/min that argon gas, which protects gas gas flow, and laser spot diameter is 2~3mm.
9. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 8, it is characterised in that: the step 5)
In, control laser sintering process parameter is specific as follows: pulse laser average laser power is 1600W, scanning speed 3000mm/
S, it is 8L/min, laser spot diameter 2mm that argon gas, which protects gas gas flow,.
10. the compound increasing material manufacturing process of dissimilar material thrust chamber according to claim 1, it is characterised in that: the step
6) it in, is heat-treated specific as follows: being warming up to 440~460 DEG C with furnace, keep the temperature 90~1200min, be cooled in 1~2Bar atmosphere
After 250~300 DEG C, comes out of the stove and be air-cooled to room temperature.
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