CN108067705A - A kind of method of the compound increasing material manufacturing of CMT- ultrasonic impacts - Google Patents
A kind of method of the compound increasing material manufacturing of CMT- ultrasonic impacts Download PDFInfo
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- CN108067705A CN108067705A CN201611024838.XA CN201611024838A CN108067705A CN 108067705 A CN108067705 A CN 108067705A CN 201611024838 A CN201611024838 A CN 201611024838A CN 108067705 A CN108067705 A CN 108067705A
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- cmt
- ultrasonic
- increasing material
- material manufacturing
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Classifications
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- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of methods of the compound increasing material manufacturing of CMT ultrasonic impacts, ultrasonic implement treatment is carried out to formed component surface while CMT electric arc increasing material manufacturings, component surface is plastically deformed, while formed parts dense structure is made, its internal porosity is squeezed, pore volume is caused to become smaller or be eliminated；Simultaneously, ultrasonic impact partial action energy is conducted by component into the liquid state molten pool of CMT, to reduce solubility of the bubble in the liquid of molten bath, the ascent rate of bubble is improved, shortens time of the bubble in molten bath, so as to reduce the gentle pore volume of stomata quantity in formed parts, pass through ultrasonic impact simultaneously, apparent plastic deformation occurs for welding point surface, and nearly surface layer microstructure is crashed to pieces, and is refined so as to the crystal grain of joint surface.
Description
Technical field
The present invention relates to electric arc material increasing field more particularly to a kind of sides of the compound increasing material manufacturing of CMT- ultrasonic impacts
Method.
Background technology
Cold metal transfer (cold metal transfer, CMT) technology is that Austrian Fu Nisi companies weld in steel and aluminium
It connects, without a kind of low_input_power amount welding procedure succeeded in developing on splashing arc stricking techniques and micro-force sensing technical foundation.CMT skills
The innovation of art is droplet transfer being combined with wire feed process, is truly realized and is welded without splashing；Due to molten drop mistake
Effective control of transient can realize the shaping control of metal component electric arc increasing material manufacturing while thermal weld stress is reduced
System.Increasing material manufacturing (additive manufacturing, AM) technology is that the method successively to add up by using material manufactures in fact
The technology of body part is a kind of manufacturing method of material addition from bottom to top compared with traditional Machining Technology for Cutting.But
Using CMT welding techniques carry out metal component electric arc increasing material manufacturing when, formed parts tissue is generally more loose, particularly aluminium/
More stomata can be also formed in Mg alloy formed component, can not only reduce the effective bearing area of formed parts, while also easily
Cause stress concentration, so as to reduce the performance of metal increasing material manufacturing component.
The content of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of method of the compound increasing material manufacturing of CMT- ultrasonic impacts, make
With CMT and the method for ultrasonic impact Compound Machining, while metal component electric arc increasing material manufacturing is realized, reduce CMT electric arcs and increase
The gentle pore volume of stomata quantity of component in material manufacturing process improves component tissue porousness, so as to improve increasing material manufacturing structure
The consistency of part.
The technical scheme is that：
A kind of method of the compound increasing material manufacturing of CMT- ultrasonic impacts, to formed while CMT electric arc increasing material manufacturings
Component surface carries out ultrasonic implement treatment, and component surface is plastically deformed, and while formed parts dense structure is made, makes it
Internal porosity is squeezed, and pore volume is caused to become smaller or be eliminated；Meanwhile ultrasonic impact partial action energy passes through component
Conduction, to reduce solubility of the bubble in the liquid of molten bath, improves the ascent rate of bubble into the liquid state molten pool of CMT, shortens
Time of the bubble in molten bath, so as to reduce the gentle pore volume of stomata quantity in formed parts.
Moreover, ultrasonic impact partial action energy is conducted by component into the liquid state molten pool of CMT, the larger bubble of volume
Several bubbles are impacted into, contribute to the effusion of bubble.
Moreover, ultrasonic impact equipment output end is always perpendicular to formed parts surface (the i.e. output terminal of ultrasonic impact equipment
Positioned at formed parts normal to a surface direction, impacted from normal direction), and to formed component surface (i.e. weld seam completely
Surface) it is impacted.
Moreover, the frequency of ultrasonic impact is 10-20kHz, preferably 15-20kHz.
Moreover, in welding direction, CMT electric arcs are preceding, and ultrasonic impact is in rear, CMT arc center and ultrasonic impact position
Distance be 10-20mm.
After completing the compound increasing material manufacturing of CMT- ultrasonic impacts according to above-mentioned method, by independent CMT electric arcs increasing material manufacturing
Sample and the sample of the compound increasing material manufacturing of CMT- ultrasonic impacts are cut by wire cutting, are compared.Pass through sanding and polishing
Afterwards, the stomata and test specimen pattern of test specimen cross section are watched under an optical microscope, since ultrasonic impact acts on, surface of test piece hair
Raw plastic deformation, the stomata inside test specimen (away from surface of test piece closely) are squeezed, and pore volume is caused to become smaller or gas
Hole is eliminated, while by ultrasonic impact, apparent plastic deformation occurs for welding point surface, and nearly surface layer microstructure is hit
It is broken, it is refined so as to the crystal grain of joint surface.
Description of the drawings
Fig. 1 is the compound increasing material manufacturing method device structure schematic diagram of CMT- ultrasonic impacts of the present invention；
Fig. 2 is to carry out the compound increasing material manufacturing of CMT- ultrasonic impacts and independent CMT electric arcs increasing material using technical solution of the present invention
The test specimen cross-sectional morphology (1) of manufacture, wherein (a) is the compound increasing material manufacturing (b) of CMT- ultrasonic impacts increases material for independent CMT electric arcs
Manufacture；
Fig. 3 is to carry out the compound increasing material manufacturing of CMT- ultrasonic impacts and independent CMT electric arcs increasing material using technical solution of the present invention
The test specimen macro morphology of manufacture；
Fig. 4 is to carry out the compound increasing material manufacturing of CMT- ultrasonic impacts and independent CMT electric arcs increasing material using technical solution of the present invention
The test specimen cross-sectional morphology (2) of manufacture, wherein (a) is the compound increasing material manufacturing (b) of CMT- ultrasonic impacts increases material for independent CMT electric arcs
Manufacture；
Fig. 5 is the effect schematic diagram of ultrasonic impact pin and weld seam in the present invention.
Specific embodiment
The technical solution further illustrated the present invention with reference to specific embodiment：
Metal arc increasing material manufacturing experimental substrate of the present invention is aluminium alloy 6061, substrate size for 300 × 150 ×
4mm, welding wire select ER4043.Aluminium alloy is carried out using direct current cold metal transfer technology (cold metal transfer, CMT)
Electric arc increasing material manufacturing is tested.Testing equipment selects the CMT Advanced4000 type welding machines that CMT welding machines are Fu Nisi companies.
The preceding wire brush of experiment removes the oxide-film on aluminium alloy base plate, until exposing metallic luster, will be applied with alcohol
Respectively the greasy dirt in the range of about 30-40mm and foul clean up on surface at weldering, after aoxidizing membrane removal, should the welding in 2h, in order to avoid
Regenerate new oxide-film；Welding parameter, wire feed rate 5m/min are set, the welding gun totality speed of travel is 8mm/s, gas stream
It measures as 20L/min；
The ultrasonic impact machine (rifle) that Tianjin Tian Dong perseverance developments in science and technology Co., Ltd produces is placed on after CMT welding guns to
The aluminium alloy test specimen of shaping carries out ultrasonic impact, and frequency is adjusted to 18kHz；Using multiple rows of spininess impact head impact face of weld,
Impact process pipette tips are perpendicular to joint surface, it is ensured that by complete impact, (ultrasonic impact gun refers to Chinese patent on formed surface
2013102016550,200610014768X).
The sample of the sample of independent CMT electric arcs increasing material manufacturing and the compound increasing material manufacturing of CMT- ultrasonic impacts is passed through into wire cutting
It is cut, is compared, including：(1) ultrasonic impact (the compound increasing material manufacturing of CMT- ultrasonic impacts) is carried out to formed surface
With being compared completely without the test specimen of ultrasonic impact (increasing material manufacturing of CMT electric arcs).(2) CMT- ultrasonic impacts only are carried out in one side
Compound increasing material manufacturing is compared with the opposite side of independent CMT electric arcs increasing material manufacturing.After sanding and polishing, in optical microphotograph
The stomata and test specimen pattern of test specimen cross section are watched under mirror, as shown in Figure 2-4, since ultrasonic impact acts on, surface of test piece
Be plastically deformed, the stomata (away from surface of test piece certain distance) inside test specimen is squeezed, cause pore volume become smaller or
Person's stomata is eliminated.
The present invention selects magnesium alloy AZ31 and Titanium alloy TA15 as metal arc increasing material manufacturing experimental substrate again, using with
Above-mentioned aluminium alloy identical experiment size, parameter and equipment are tested, and it is identical with above-mentioned experimental result to obtain result.
Illustrative description has been done to the present invention above, it should explanation, in the situation for the core for not departing from the present invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent substitution of creative work equal
Fall into protection scope of the present invention.
Claims (8)
- A kind of 1. method of the compound increasing material manufacturing of CMT- ultrasonic impacts, which is characterized in that while CMT electric arc increasing material manufacturings pair Formed component surface carries out ultrasonic implement treatment, and component surface is plastically deformed, and makes formed parts dense structure Meanwhile its internal porosity is squeezed, pore volume is caused to become smaller or be eliminated；Meanwhile ultrasonic impact partial action energy Amount is conducted by component into the liquid state molten pool of CMT, to reduce solubility of the bubble in the liquid of molten bath, improves the floating of bubble Speed shortens time of the bubble in molten bath, so as to reduce the gentle pore volume of stomata quantity in formed parts.
- A kind of 2. method of compound increasing material manufacturing of CMT- ultrasonic impacts according to claim 1, which is characterized in that ultrasound punching Partial action energy is hit to conduct into the liquid state molten pool of CMT by component, the larger bubble of volume is impacted into several bubbles, Contribute to the effusion of bubble.
- A kind of 3. method of compound increasing material manufacturing of CMT- ultrasonic impacts according to claim 1, which is characterized in that ultrasound punching Equipment output end is hit always perpendicular to formed parts surface, i.e. the output terminal of ultrasonic impact equipment is located at the method on formed parts surface Line direction, is impacted from normal direction, and formed component surface, that is, face of weld is impacted completely.
- A kind of 4. method of compound increasing material manufacturing of CMT- ultrasonic impacts according to claim 1, which is characterized in that ultrasound punching The frequency hit is 10-20kHz, preferably 15-20kHz.
- 5. the method for a kind of compound increasing material manufacturing of CMT- ultrasonic impacts according to claim 1, which is characterized in that welding On direction, CMT electric arcs are preceding, and for ultrasonic impact rear, the distance of CMT arc center and ultrasonic impact position is 10-20mm。
- 6. a kind of method of compound increasing material manufacturing of CMT- ultrasonic impacts as described in one of claim 1-5 increases in aluminium alloy 6061 It is applied in material manufacture.
- 7. a kind of method of compound increasing material manufacturing of CMT- ultrasonic impacts as described in one of claim 1-5 increases in magnesium alloy AZ31 It is applied in material manufacture.
- 8. a kind of method of compound increasing material manufacturing of CMT- ultrasonic impacts as described in one of claim 1-5 increases in Titanium alloy TA15 It is applied in material manufacture.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856974A (en) * | 2018-07-26 | 2018-11-23 | 重庆科技学院 | A kind of ultrasonic field coupling congruent melting pond mariages CMT electric arc increasing material moulding technique |
| CN109079284A (en) * | 2018-08-02 | 2018-12-25 | 西安交通大学 | A kind of device and method of more ultrasonic wave added enhancing CMT aluminium alloy increasing material manufacturing forming qualities |
| CN110480125A (en) * | 2018-05-15 | 2019-11-22 | 天津大学 | A kind of compound increasing material manufacturing method of CMT-ultrasonic vibration |
| CN110977172A (en) * | 2019-11-21 | 2020-04-10 | 南京航空航天大学 | Electric arc additive and laser-assisted thermoplastic forming composite manufacturing device and method |
| CN111702336A (en) * | 2020-06-19 | 2020-09-25 | 北京航星机器制造有限公司 | Laser shock auxiliary arc additive manufacturing method |
| CN111992711A (en) * | 2019-05-10 | 2020-11-27 | 天津大学 | Method for improving tensile property of titanium alloy additive manufacturing by adding Nb powder |
| CN112059530A (en) * | 2020-09-08 | 2020-12-11 | 南昌航空大学 | Device and method for repairing reinforced steel-based surface composite structure or steel-based surface |
| CN113210807A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Method for improving wettability of magnesium alloy in electric arc additive manufacturing |
| CN113210808A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Electric arc additive manufacturing method of magnesium alloy |
| CN114589381A (en) * | 2022-03-29 | 2022-06-07 | 江苏大学 | Interlayer ultrasonic impact assisted high-performance CMT arc additive manufacturing method and device |
| CN114905117A (en) * | 2022-05-23 | 2022-08-16 | 五邑大学 | Arc additive manufacturing apparatus, method, and storage medium |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480125A (en) * | 2018-05-15 | 2019-11-22 | 天津大学 | A kind of compound increasing material manufacturing method of CMT-ultrasonic vibration |
| CN108856974A (en) * | 2018-07-26 | 2018-11-23 | 重庆科技学院 | A kind of ultrasonic field coupling congruent melting pond mariages CMT electric arc increasing material moulding technique |
| CN108856974B (en) * | 2018-07-26 | 2020-11-27 | 重庆科技学院 | Ultrasonic field coupling common molten pool double-wire CMT arc additive forming process method |
| CN109079284A (en) * | 2018-08-02 | 2018-12-25 | 西安交通大学 | A kind of device and method of more ultrasonic wave added enhancing CMT aluminium alloy increasing material manufacturing forming qualities |
| CN109079284B (en) * | 2018-08-02 | 2020-05-19 | 西安交通大学 | Method for enhancing CMT aluminum alloy additive manufacturing forming quality with assistance of multiple ultrasonic waves |
| CN111992711A (en) * | 2019-05-10 | 2020-11-27 | 天津大学 | Method for improving tensile property of titanium alloy additive manufacturing by adding Nb powder |
| CN110977172A (en) * | 2019-11-21 | 2020-04-10 | 南京航空航天大学 | Electric arc additive and laser-assisted thermoplastic forming composite manufacturing device and method |
| CN113210807A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Method for improving wettability of magnesium alloy in electric arc additive manufacturing |
| CN113210808A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Electric arc additive manufacturing method of magnesium alloy |
| CN111702336B (en) * | 2020-06-19 | 2022-04-12 | 北京航星机器制造有限公司 | Laser shock auxiliary arc additive manufacturing method |
| CN111702336A (en) * | 2020-06-19 | 2020-09-25 | 北京航星机器制造有限公司 | Laser shock auxiliary arc additive manufacturing method |
| CN112059530A (en) * | 2020-09-08 | 2020-12-11 | 南昌航空大学 | Device and method for repairing reinforced steel-based surface composite structure or steel-based surface |
| CN112059530B (en) * | 2020-09-08 | 2021-09-03 | 南昌航空大学 | Device and method for repairing reinforced steel-based surface composite structure or steel-based surface |
| CN114589381A (en) * | 2022-03-29 | 2022-06-07 | 江苏大学 | Interlayer ultrasonic impact assisted high-performance CMT arc additive manufacturing method and device |
| CN114905117A (en) * | 2022-05-23 | 2022-08-16 | 五邑大学 | Arc additive manufacturing apparatus, method, and storage medium |
| CN114905117B (en) * | 2022-05-23 | 2024-02-06 | 五邑大学 | Arc additive apparatus, method and storage medium |
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