CN108311703A - New-energy automobile high-performance light fine structure part manufacturing process - Google Patents

New-energy automobile high-performance light fine structure part manufacturing process Download PDF

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Publication number
CN108311703A
CN108311703A CN201810103764.1A CN201810103764A CN108311703A CN 108311703 A CN108311703 A CN 108311703A CN 201810103764 A CN201810103764 A CN 201810103764A CN 108311703 A CN108311703 A CN 108311703A
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alloy
structure part
new
manufacturing process
energy automobile
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CN108311703B (en
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陶诚
徐光周
陈泽彬
匡中华
陈晓东
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SHENZHEN MINGLIDA PRECISION MACHINERY CO Ltd
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SHENZHEN MINGLIDA PRECISION MACHINERY CO Ltd
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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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/64—Treatment of workpieces or articles after build-up by thermal means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • 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
    • B22F7/08—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 with one or more parts not made from powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
    • 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
    • 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

Abstract

The present invention relates to a kind of new-energy automobile high-performance light fine structure part manufacturing process, including step：Titanium alloy piece is cut, and titanium alloy piece is handled to form titanium alloy framework；According to preset aluminium alloy formula, configuration element powder, and it is uniformly mixed into Al alloy powder；Titanium alloy framework is subjected to the pre-heat treatment, then by laser 3D printing by Al alloy powder successively cladding in the surface of titanium alloy framework, form the aluminum alloy casing for wrapping up the titanium alloy framework, obtain alloy structure part；Surface Finishing is carried out to alloy structural member according to preset threedimensional model；Alloy structure part after finishing is subjected to homogenizing annealing.The above method obtains high intensity and light fine structure part using titanium alloy piece and aluminum alloy casing by laser 3D printing technology, Surface Finishing and annealing stress-removal processing.

Description

New-energy automobile high-performance light fine structure part manufacturing process
Technical field
The present invention relates to new-energy automobile manufacturing technology fields, more particularly to a kind of new-energy automobile high-performance light essence Close structural member manufacturing process.
Background technology
With the exhaustion of non-renewable energy resources and the getting worse of environmental pollution, scientific and technological development starts toward renewable, green Color energy direction is developed.And the exhaust gas discharge of automobile is an important pollution sources of atmosphere pollution, so, auto vendor of today All fall over each other to research and develop new-energy automobile.The core reform of new-energy automobile is its used dynamical system, from traditional gasoline The engine of driving is changed into the engine, such as pure electric vehicle, fuel battery electric etc. of green energy resource driving.In dynamical system While reform, the fine structure part of new-energy automobile is also being reformed, and the fine structure part of automobile is just toward the side of high-performance light To development, traditional die casting aluminium fine structure part is difficult to meet demand.
Invention content
Based on this, the present invention provides a kind of new-energy automobile high-performance light fine structure part manufacturing process, utilizes titanium Alloy sheet and aluminum alloy casing obtain high intensity by laser 3D printing technology, Surface Finishing and annealing stress-removal processing With light fine structure part.
A kind of new-energy automobile high-performance light fine structure part manufacturing process, including step：
Titanium alloy piece is cut, and titanium alloy piece is handled to form titanium alloy framework；
According to preset aluminium alloy formula, configuration element powder, and it is uniformly mixed into Al alloy powder；
Titanium alloy framework is subjected to the pre-heat treatment, then by laser 3D printing by Al alloy powder successively cladding in titanium alloy The surface of skeleton forms the aluminum alloy casing for wrapping up the titanium alloy framework, obtains alloy structure part；
Surface Finishing is carried out to alloy structural member according to preset threedimensional model；
Alloy structure part after finishing is subjected to homogenizing annealing.
Above-mentioned new-energy automobile high-performance light fine structure part manufacturing process builds core bone using titanium alloy piece Frame, then using laser 3D printing titanium alloy framework surface formed aluminum alloy casing to obtain alloy structure part, further according to Threedimensional model carries out finishing processing to correct the outer profile of alloy structure part to the surface of alloy structural member, finally carries out again Annealing is homogenized to eliminate stress, obtains high-performance light fine structure part.By above-mentioned design, titanium alloy piece and aluminium alloy are utilized Shell obtains high intensity and light accurate knot by laser 3D printing technology, Surface Finishing and annealing stress-removal processing Component.
The weight of Al alloy powder is in one of the embodiments,：5~15 parts of Zn, 4~8 parts of Cu, 2~6 parts Hf, 0.5~2 part of Yb, 0.5~1.5 part of Mg, 0.2~0.5 part of Ti, 0.05~0.2 part of Ta, 0.1~0.5 part of Zr, 0.06~0.1 Part Fe, 0.06~0.1 part of Si, 0.06~0.1 part of Ni and 65~85 part of Al.
The grain size of Al alloy powder is 40~49 μm in one of the embodiments,.
In one of the embodiments, in laser 3D printing, laser power be 100~6000W, sweep speed be 100~ 1500mm/min, laser spot diameter are 0.1~6mm, and overlapping rate is 15~50%, and printing thickness is 0.005~10mm, printing Environmental oxygen concentration is 0~50ppm.
The preheating temperature of titanium alloy framework is 500~1000 DEG C in one of the embodiments,.
The annealing temperature of alloy structure part after finishing in one of the embodiments, is 100~1300 DEG C.
The annealing time of alloy structure part after finishing in one of the embodiments, is 13~15h.
Alloy structure part after finishing in one of the embodiments, which is positioned in nitrogen environment, to be made annealing treatment.
The wall thickness of aluminum alloy casing is not less than 1mm in one of the embodiments,.
The thickness of titanium alloy piece is 1~2mm in one of the embodiments,.
Description of the drawings
Fig. 1 is a kind of flow of the new-energy automobile high-performance light fine structure part manufacturing process of embodiment of the present invention Schematic diagram.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes The embodiment of description.Keep the understanding to the disclosure more thorough on the contrary, purpose of providing these embodiments is Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein The purpose of the embodiment of body, it is not intended that in the limitation present invention.
It is a kind of stream of new-energy automobile high-performance light fine structure part manufacturing process of the present embodiment referring to Fig. 1 Journey schematic diagram.
The new-energy automobile high-performance light fine structure part manufacturing process, including step：
S10：Titanium alloy piece is cut, and titanium alloy piece is handled to form titanium alloy framework.The rigidity of titanium alloy is strong, As core skeleton, the intensity of fine structure part can be enhanced.
S20：According to preset aluminium alloy formula, configuration element powder, and it is uniformly mixed into Al alloy powder.According to production The functional requirement of product configures suitable Al alloy powder.
S30：Titanium alloy framework is subjected to the pre-heat treatment, then by laser 3D printing by Al alloy powder successively cladding in titanium The surface of alloy skeleton forms the aluminum alloy casing for wrapping up the titanium alloy framework, obtains alloy structure part.It is beaten using laser 3D The mode of print so that the mould development and system of traditional die casting mode are compared in Al alloy powder cladding and titanium alloy framework surface It makes, technology difficulty is lower, saves expensive mold manufacturing and development cost, advantageously reduces development cost and improves production effect Rate.
S40：Surface Finishing is carried out to alloy structural member according to preset threedimensional model.By numerically-controlled machine tool, to alloy The aluminum alloy casing of structural member surface carries out milling finish maching, promotes contour accuracy.
S50：Alloy structure part after finishing is subjected to homogenizing annealing.The purpose of homogenizing annealing is to eliminate alloy The internal stress of structural member.
Above-mentioned new-energy automobile high-performance light fine structure part manufacturing process builds core bone using titanium alloy piece Frame, then using laser 3D printing titanium alloy framework surface formed aluminum alloy casing to obtain alloy structure part, further according to Threedimensional model carries out finishing processing to correct the outer profile of alloy structure part to the surface of alloy structural member, finally carries out again Annealing is homogenized to eliminate stress, obtains high-performance light fine structure part.By above-mentioned design, titanium alloy piece and aluminium alloy are utilized Shell obtains high intensity and light accurate knot by laser 3D printing technology, Surface Finishing and annealing stress-removal processing Component.
In step slo, the thickness of titanium alloy piece is 1~2mm.For example, according to product strength demand, can choose 1mm, The titanium alloy piece of 1.5mm, 2mm equal thickness.
In addition, can after titanium alloy piece is cut according to the complexity of the shape of the fine structure part of required forming Titanium alloy framework is obtained by way of going out titanium alloy framework or multi-disc titanium alloy piece welding bending and forming.For example, for The fairly simple structural member of shape, can mold titanium alloy framework by way of bending.And it is more complicated for shape Structural member then forms titanium alloy framework by the way of multi-disc titanium alloy welding.
Further, in order to which the connection for enhancing the aluminum alloy casing that titanium alloy framework and subsequent laser 3D printing are formed is steady Solidity can carry out frosted processing to the surface of titanium alloy piece in advance.
In step S20, the weight of Al alloy powder is：5~15 parts of Zn, 4~8 parts of Cu, 2~6 parts of Hf, 0.5 ~2 parts of Yb, 0.5~1.5 part of Mg, 0.2~0.5 part of Ti, 0.05~0.2 part of Ta, 0.1~0.5 part of Zr, 0.06~0.1 part of Fe, 0.06~0.1 part of Si, 0.06~0.1 part of Ni and 65~85 part of Al.The grain size of Al alloy powder is 40~49 μm.
For example, the weight of Al alloy powder is：5 parts of Zn, 8 parts of Cu, 4 parts of Hf, 1 part of Yb, 1 part of Mg, 0.5 part of Ti, 0.1 part of Ta, 0.3 part of Zr, 0.1 part of Fe, 0.08 part of Si, 0.06 part of Ni and 75 part of Al.The grain size of Al alloy powder is 40 μm.
In another example the weight of Al alloy powder is：15 parts of Zn, 4 parts of Cu, 2 parts of Hf, 0.5 part of Yb, 0.5 part of Mg, 0.3 part of Ti, 0.05 part of Ta, 0.5 part of Zr, 0.08 part of Fe, 0.08 part of Si, 0.08 part of Ni and 85 part of Al.The grain of Al alloy powder Diameter is 45 μm.
In another example the weight of Al alloy powder is：8 parts of Zn, 6 parts of Cu, 2 parts of Hf, 2 parts of Yb, 1.5 parts of Mg, 0.2 part Ti, 0.2 part of Ta, 0.1 part of Zr, 0.1 part of Fe, 0.1 part of Si, 0.1 part of Ni and 65 part of Al.The grain size of Al alloy powder is 49 μm.
Furthermore in step S20, the wall thickness of the aluminum alloy casing formed using laser 3D printing is not less than 1mm.
In step s 30, in laser 3D printing, device parameter is configured according to the demand of product, wherein laser power is 100~6000W, sweep speed are 100~1500mm/min, and laser spot diameter is 0.1~6mm, and overlapping rate is 15~50%, Printing thickness is 0.005~10mm, and printing environment oxygen concentration is 0~50ppm.
In step s 30, the preheating temperature of titanium alloy framework is 500~1000 DEG C.
In step s 50, the annealing temperature of the alloy structure part after finishing be 100~1300 DEG C, annealing time be for 13~15h.
Further, the alloy structure part after finishing, which can be positioned in nitrogen environment, is made annealing treatment.
Each technical characteristic of above example can be combined arbitrarily, to keep description succinct, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield is all considered to be the range of this specification record.
Above example only expresses the preferred embodiments of the present invention, the description thereof is more specific and detailed, but not It can therefore be construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art, Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention It encloses.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (10)

1. a kind of new-energy automobile high-performance light fine structure part manufacturing process, which is characterized in that including step：
Titanium alloy piece is cut, and titanium alloy piece is handled to form titanium alloy framework；
According to preset aluminium alloy formula, configuration element powder, and it is uniformly mixed into Al alloy powder；
Titanium alloy framework is subjected to the pre-heat treatment, then by laser 3D printing by Al alloy powder successively cladding in titanium alloy framework Surface, form the aluminum alloy casing for wrapping up the titanium alloy framework, obtain alloy structure part；
Surface Finishing is carried out to alloy structural member according to preset threedimensional model；
Alloy structure part after finishing is subjected to homogenizing annealing.
2. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute The weight for stating Al alloy powder is：5~15 parts of Zn, 4~8 parts of Cu, 2~6 parts of Hf, 0.5~2 part of Yb, 0.5~1.5 part Mg, 0.2~0.5 part of Ti, 0.05~0.2 part of Ta, 0.1~0.5 part of Zr, 0.06~0.1 part of Fe, 0.06~0.1 part of Si, 0.06~ 0.1 part of Ni and 65~85 part of Al.
3. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute The grain size for stating Al alloy powder is 40~49 μm.
4. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute It states in laser 3D printing, laser power is 100~6000W, and sweep speed is 100~1500mm/min, and laser spot diameter is 0.1~6mm, overlapping rate are 15~50%, and printing thickness is 0.005~10mm, and printing environment oxygen concentration is 0~50ppm.
5. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that titanium The preheating temperature of alloy skeleton is 500~1000 DEG C.
6. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute The annealing temperature for stating the alloy structure part after finishing is 100~1300 DEG C.
7. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute The annealing time for stating the alloy structure part after finishing is 13~15h.
8. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute The alloy structure part after finishing is stated to be positioned in nitrogen environment and made annealing treatment.
9. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that institute The wall thickness for stating aluminum alloy casing is not less than 1mm.
10. new-energy automobile high-performance light fine structure part manufacturing process according to claim 1, which is characterized in that The thickness of the titanium alloy piece is 1~2mm.
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CN113862521A (en) * 2021-07-29 2021-12-31 南京工业大学 Titanium-aluminum alloy based on multistage reinforcement and preparation method thereof

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