CN108340047A - A method of electric arc increasing material manufacturing almag structural member is strengthened in hammering - Google Patents
A method of electric arc increasing material manufacturing almag structural member is strengthened in hammering Download PDFInfo
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- CN108340047A CN108340047A CN201810130380.9A CN201810130380A CN108340047A CN 108340047 A CN108340047 A CN 108340047A CN 201810130380 A CN201810130380 A CN 201810130380A CN 108340047 A CN108340047 A CN 108340047A
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- China
- Prior art keywords
- almag
- hammering
- structural member
- material manufacturing
- increasing material
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
Abstract
The present invention discloses a kind of method of hammering reinforcing electric arc increasing material manufacturing almag structural member, includes the following steps：1), base-plate cleaning；2) almag structural member three-dimensional model import slices software, is subjected to slice and path planning, the slice file of generation is imported into control system；3) technological parameter, is set：Including speed of welding, wire feed rate, throughput；Control system combines slice file according to the technological parameter of setting, successively increasing material manufacturing almag structural member；4) after, being molded one layer of increasing material manufacturing almag structural member, adjustment tup center, to overlapping, is walked according to forming path and is hammered with welding bead center；5) it, repeats step 3) and 4) completes entire electric arc increasing material manufacturing almag structural member and hammering reinforcing.The present invention is healed by the stomata in hammering rear part, and the porosity greatly reduces, and concurrent deformation strengthens the mechanical property for improving component entirety, and mechanical property is uniform.
Description
Technical field
The invention belongs to material increasing fields, and in particular to a kind of electric arc increasing material manufacturing intensifying method of almag.
Background technology
It is a kind of efficient, quick manufacturing process that electric arc fuse, which increases material, especially suitable for being molded the song of large scale structure complexity
Face, cross knot component.Using arc welder as heat source, alloy welding wire is raw material, recycles robot as path walking mechanism
Straight forming band large-scale metal structural member has become current research hotspot.It is complicated to increase material technology straight forming using electric arc
Band large-scale metal structural member, more efficient compared to traditional casting, forging technology, cost is lower.
The characteristics of aluminium alloy has density small, and specific strength is high, good moldability, in fields such as aerospace, ships, application is wide
It is general.Simultaneously because aluminium alloy has preferable welding performance, especially suitable for electric arc increasing material manufacturing.This not only avoids with laser
For heat source, the aluminium alloy problem low to laser absorption rate；And its shaping efficiency is significantly larger than laser.Electric arc increasing material manufacturing aluminium closes
Golden large-sized structural parts have the features such as efficient, at low cost, have great application potential in straight forming band large-scale metal.
Almag is with moderate strength, but during the increasing material manufacturing of aluminium alloy, due to successively accumulating, especially
It is that other line aluminium alloys are compared to then almag, there is in layer and inevitably gas hole defect at Coating combination；
Chinese patent application disclosed in 11 days January in 2017 announces No. CN106312461A (application number
201610887150.8), it is proposed that a kind of preparation method and step of large aluminum alloy structural member, it can be quickly using CMT techniques
Large aluminum alloy structural member of good performance is prepared, using MIG or TIG connection main bodys and overhanging portion, but in the technique
In inevitably there is the defects of stomata.
Chinese patent application disclosed in 30 days June in 2017 announces CN 106903394A, puts forward a kind of magnalium conjunction
Golden increasing material manufacturing method, proposes the cleaning method of substrate surface, improves the binding force of substrate and component, removes substrate surface
Greasy dirt advantageously reduces the stomata remained in component, but cannot completely eliminate stomata.
In addition part is in as-cast structure after straight forming, and mechanical property is difficult to meet requirement, it is therefore desirable to assist it
The defects of his means carry out subsequent reinforced, and reduce alloy, improve the comprehensive mechanical property of almag.
Invention content
The purpose of the present invention is to provide a kind of methods that electric arc increasing material manufacturing almag structural member is strengthened in hammering, with solution
Certainly gas hole defect and the comprehensive mechanical property of alloy is further increased in almag；Present invention proposition is impacted with pneumatic hammer
Working hardening technique to decrease or even eliminate the gas hole defect in shaped component, while improving the overall mechanical properties of component.This
Technical process is simply controllable, strong applicability.
To achieve the goals above, the present invention uses following technical scheme：
A method of electric arc increasing material manufacturing almag structural member is strengthened in hammering, includes the following steps：
1), base-plate cleaning；
2) almag structural member three-dimensional model import slices software, is subjected to slice and path planning, by cutting for generation
Piece file imports control system；
3) technological parameter, is set：Including speed of welding, wire feed rate, throughput；Control system is joined according to the technique of setting
Number combines slice file, successively increasing material manufacturing almag structural member；
4) after, being molded one layer of increasing material manufacturing almag structural member, adjustment tup center and welding bead center to overlapping, according to
Forming path walking hammering；
5) it, repeats step 3) and 4) completes entire electric arc increasing material manufacturing almag structural member and hammering reinforcing.
Further, electric arc increasing material manufacturing is molded content of magnesium ranging from 1.5%-7.5% in used magnesium alloy.
Further, step 1) is first with grinding removal substrate surface oxide layer, then with alcohol and acetone cleaning base plate surface,
Remove impurity oil stain.
Further, slice thickness is 1.0-3mm in step 2).
Further, using magnalium series solder wire as raw material in step 3), gage of wire size is in 0.8-1.6mm；Welding gun is pressed
Successively stereo shaping process is carried out according to set planning path, wire feed rate 3-9m/min, speed of welding 0.3-0.9m/min,
There are inert protective gas submitting, throughput 15-30L/min in welding gun end simultaneously.
Further, the inert protective gas used is 99.999% high-purity argon gas.
Further, the hammering device that hammering uses in step 4) is pneumatic hammer, electromagnetic hammer, hydraulic hammer or other energy so that aluminium
The hammering device that magnesium alloy is deformed.
Further, in step 4), after welding bead to be formed is down to the temperature that can be hammered, by tup center and welding bead center
It adjusts to coincidence, is successively hammered according to given route；Deformation amount controlling is between 10%-65%.
Further, step 4) is hammered using pneumatic hammer, and the shape of tup adapts to the shape of welding bead；The throughput of pneumatic hammer
For range in 260-370L/min, the speed of hammering is 0.3-0.9m/min.
Further, during in order to avoid hammering, molded part is detached from substrate, and three first layers become without hammering
Shape, and it is secured with substrate bonding to ensure by reducing speed of welding.
The present invention provides bump power using pneumatic hammer, and carrying out successively hammering to welding bead after molding deforms；Pass through adjusting
Supply the impact dynamics and pneumatic hammer of pneumatic hammer difference compressed air require, tup apart from welding bead surface distance control pneumatic hammer tup
Movement speed, hammer number, and then control hammering deflection so that achieve the effect that working hardening, spy in welding bead after molding
It Shi Yongyu not be with the almag of working hardening characteristic.
Compared with the existing technology, the invention has the advantages that：
1, after hammering deforms, since alloy is plastically deformed, the stomata remained in welding bead deforms even
Healing reduces the stomata in alloy, reduces the formation of crack of component in use.
2, a certain amount of uniform plastic deformation occurs for welding bead after hammering so that every layer of welding bead generates working hardening and make
With, and then improve the mechanical property of alloy.
3, successively strengthening raised, the molten phenomenon of collapsing ensured in forming process is improved, welding bead surfacing after hammering, power
It is uniform to learn performance.
Description of the drawings
Fig. 1 is the front and back stomata contrast schematic diagram of hammering；Wherein Fig. 1 (a) is schematic diagram before hammering；Fig. 1 (b) is to show after hammering
It is intended to；
Fig. 2 is the front and back mechanical property contrast schematic diagram of hammering.
Specific implementation mode
Embodiment 1
Using 5183 welding wire of almag as raw material, is successively printed using formation system, carried out using hammer systems
It successively hammers, specific steps：
1), 5083 aluminium alloy base plates steel brush and sand paper similar in 5183 aluminium alloy welding wire ingredients are polished, then
With acetone and alcohol washes substrate surface, clamping device is used in combination to be fixed on turntable.
2), by the three-dimensional model importing tablet software of round molded part, slice thickness 1mm, by the slice file of generation
Control software is imported, it is pending；
3) CMT welding machine upper wire feeding hose speed (WFS), is set as 5m/min, and welding gun movement speed is 0.3m/min, and throughput is
30L/min.Execute program, shaped component.
4), 370L/min is arranged in pneumatic hammer throughput, hammers speed 10mm/min, and tup is 6mm apart from welding bead surface.It will hammer
Head center is adjusted in welding bead center to coincidence, is hammered twice according to forming path walking.
5) subsequent processing operations, are carried out after the completion of molding.
As shown in Figs.1 and 2, the electric arc increasing material manufacturing almag structural member hammered by the present embodiment, due to
Alloy is plastically deformed, and the stomata remained in welding bead, which deforms, even to heal, and reduces the stomata in alloy, reduces structure
The crackle of part in use；Welding bead surfacing after hammering, mechanical property are uniform.Electric arc by the present embodiment hammering increases
Material manufacture almag structural member tensile strength has 291.5MPa to be promoted to 323MPa.
Claims (10)
1. a kind of method that electric arc increasing material manufacturing almag structural member is strengthened in hammering, which is characterized in that include the following steps：
1), base-plate cleaning；
2) almag structural member three-dimensional model import slices software, is subjected to slice and welding gun path planning, generates control system
The execution file that system is able to carry out will execute file and import control system；Import slices software carries out slice and path planning, will
The slice file of generation imports control system；
3) technological parameter, is set：Including speed of welding, wire feed rate, throughput；Control system controls work of the welding machine according to setting
Skill parameter and path, successively increasing material manufacturing almag structural member；
4) after, being molded one layer of increasing material manufacturing almag structural member, tup center is adjusted with welding bead center to overlapping, according to molding
Path walking hammering；
5) it, repeats step 3) and 4) completes entire electric arc increasing material manufacturing almag structural member and hammering reinforcing.
2. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, electric arc increasing material manufacturing is molded content of magnesium ranging from 1.5%-7.5% in used magnesium alloy.
3. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, step 1) is first with grinding removal substrate surface oxide layer, then uses alcohol and acetone cleaning base plate surface, and removal impurity is oily
Stain.
4. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, slice thickness is 1.0-3mm in step 2).
5. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, using magnalium series solder wire as raw material in step 3), gage of wire size is in 0.8-1.6mm；Welding gun is according to set planning road
Diameter carries out successively stereo shaping process, and wire feed rate 3-9m/min, speed of welding 0.3-0.9m/min, welding gun end is simultaneously
There are inert protective gas submitting, throughput 15-30L/min.
6. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 5, feature
It is, the inert protective gas used is 99.999% high-purity argon gas.
7. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, the hammering device that hammering uses in step 4) is pneumatic hammer, electromagnetic hammer, hydraulic hammer or other energy so that almag generates change
The hammering device of shape.
8. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, in step 4), after welding bead to be formed is down to the temperature that can be hammered, tup center and welding bead center is adjusted to overlapping,
It is successively hammered according to given route；Deformation amount controlling is between 10%-65%.
9. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, step 4) is hammered using pneumatic hammer, and the shape of tup adapts to the shape of welding bead；The throughput range of pneumatic hammer is in 260-
The speed of 370L/min, hammering are 0.3-0.9m/min.
10. the method that electric arc increasing material manufacturing almag structural member is strengthened in a kind of hammering according to claim 1, feature
It is, three first layers are without hammering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810130380.9A CN108340047A (en) | 2018-02-08 | 2018-02-08 | A method of electric arc increasing material manufacturing almag structural member is strengthened in hammering |
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| CN201810130380.9A CN108340047A (en) | 2018-02-08 | 2018-02-08 | A method of electric arc increasing material manufacturing almag structural member is strengthened in hammering |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304465A (en) * | 2018-10-30 | 2019-02-05 | 吴天宋 | The hammering intensifying device of workpiece during a kind of metal increasing material manufacturing |
| CN109530880A (en) * | 2018-11-30 | 2019-03-29 | 沈阳工业大学 | A kind of TIG wire feed electric arc increasing material manufacturing hammering method and apparatus |
| CN109811164A (en) * | 2019-03-01 | 2019-05-28 | 中南大学 | A kind of preparation method of increasing material manufacturing aluminium alloy |
| CN111545938A (en) * | 2020-05-12 | 2020-08-18 | 湖北三江航天红阳机电有限公司 | Aluminum alloy cabin section forming method |
| CN111687553A (en) * | 2020-05-28 | 2020-09-22 | 西安交通大学 | Method for improving residual stress distribution of electric arc additive manufacturing structural part through ultrasonic impact |
| CN112453421A (en) * | 2020-11-20 | 2021-03-09 | 重庆大学 | Reinforced material adding process based on arc fuse and mold reinforcing method |
| CN112719291A (en) * | 2020-12-18 | 2021-04-30 | 南京中科煜宸激光技术有限公司 | Additive manufacturing printing method with rotatable semi-circular arc and hammering |
| CN113732442A (en) * | 2021-09-14 | 2021-12-03 | 西安交通大学 | Method for performing additive forming on full-equiaxial fine-grain magnesium alloy component through arc fuse |
| CN114905053A (en) * | 2022-05-13 | 2022-08-16 | 西安交通大学 | Equipment for synchronously heating and hammering in additive manufacturing of arc fuse and control method |
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| CN106735200A (en) * | 2016-11-30 | 2017-05-31 | 沈阳航空航天大学 | A kind of laser gain material manufacture vibrates hammering device and application method with assisting ultrasonic |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304465A (en) * | 2018-10-30 | 2019-02-05 | 吴天宋 | The hammering intensifying device of workpiece during a kind of metal increasing material manufacturing |
| CN109530880A (en) * | 2018-11-30 | 2019-03-29 | 沈阳工业大学 | A kind of TIG wire feed electric arc increasing material manufacturing hammering method and apparatus |
| CN109811164A (en) * | 2019-03-01 | 2019-05-28 | 中南大学 | A kind of preparation method of increasing material manufacturing aluminium alloy |
| CN109811164B (en) * | 2019-03-01 | 2020-10-16 | 中南大学 | Preparation method of additive manufacturing aluminum alloy |
| CN111545938A (en) * | 2020-05-12 | 2020-08-18 | 湖北三江航天红阳机电有限公司 | Aluminum alloy cabin section forming method |
| CN111545938B (en) * | 2020-05-12 | 2022-02-01 | 湖北三江航天红阳机电有限公司 | Aluminum alloy cabin section forming method |
| CN111687553A (en) * | 2020-05-28 | 2020-09-22 | 西安交通大学 | Method for improving residual stress distribution of electric arc additive manufacturing structural part through ultrasonic impact |
| CN112453421A (en) * | 2020-11-20 | 2021-03-09 | 重庆大学 | Reinforced material adding process based on arc fuse and mold reinforcing method |
| CN112453421B (en) * | 2020-11-20 | 2021-07-20 | 重庆大学 | Reinforced material adding process based on arc fuse and mold reinforcing method |
| CN112719291A (en) * | 2020-12-18 | 2021-04-30 | 南京中科煜宸激光技术有限公司 | Additive manufacturing printing method with rotatable semi-circular arc and hammering |
| CN113732442A (en) * | 2021-09-14 | 2021-12-03 | 西安交通大学 | Method for performing additive forming on full-equiaxial fine-grain magnesium alloy component through arc fuse |
| CN114905053A (en) * | 2022-05-13 | 2022-08-16 | 西安交通大学 | Equipment for synchronously heating and hammering in additive manufacturing of arc fuse and control method |
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