CN102672354A - Laser welding method of foamed aluminum green packaging material and application thereof - Google Patents
Laser welding method of foamed aluminum green packaging material and application thereof Download PDFInfo
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- CN102672354A CN102672354A CN2012101499573A CN201210149957A CN102672354A CN 102672354 A CN102672354 A CN 102672354A CN 2012101499573 A CN2012101499573 A CN 2012101499573A CN 201210149957 A CN201210149957 A CN 201210149957A CN 102672354 A CN102672354 A CN 102672354A
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Abstract
The invention discloses a laser welding method of a foamed aluminum green packaging material and an application thereof. An aluminum alloy with components which are the same with those of foamed aluminum basically is adopted at a weld joint of the foamed aluminum material as a weld joint filling material for performing laser welding. According to the technical scheme disclosed by the invention, by selecting the appropriate weld joint filling material, the collapse of a hole structure during the welding process of the foamed aluminum porous material can be overcome during the laser welding process, the formation of a compact structure at the weld joint can be avoided, a qualified connection joint is finally formed, and the requirements for foamed aluminum connection in the packaging industry can be met.
Description
Technical field
The present invention relates to welding technology field, more particularly, particularly a kind of method for laser welding of foamed aluminium environmentally friendly packing material and application thereof.
Background technology
Packaging industry is the important component part of national economy, and important support is provided for development of world economy.The sector is called as " the never rising industry of decline ", has unrivaled industrial advantage.
Foamed aluminium is matrix, comprises a large amount of holes to have the function of buffering energy-absorbing as a kind of novel packaging material with Al or other alloy, and it is little, in light weight to have proportion simultaneously; Hear resistance is strong; Characteristics such as rigidity height more and more receive the attention of every field such as packed and transported, military protection, Aeronautics and Astronautics, have been applied to the aspects such as protection and inside configuration filling of buffering package, the visual plant of fragile goods widely.Traditional material is divided into structural material and functional material, and the foamed aluminium new material meets the multifunction requirement of high-tech material development, also promptly realizes " structural material functionalization and functional material structuring ".Simultaneously, foamed aluminium is a kind of packaging material of green, has the advantage of recuperability and recycle; It not only can reduce and eliminate environmental pollution, alleviates the pressure to ecological environment, and can save the energy; Replacement makes waste and old resource renewable resources as the natural resources of this type of timber scarcity.At present the research emphasis for foamed aluminium mainly concentrates on its preparation, structure, performance, designs, reduces cost and expands aspect such as its application.If can't realize that the application in packet industry will receive very big restriction to foamed aluminium as green material to its reliable and practical connection.
Welding is as one of important material method of attachment; Through heating, pressurization or heating and pressurizing acting in conjunction, not only on macroscopic view, formed permanent splice, combine also having formed between atom on the microcosmic; Therefore, welding has good structural integrity and realizability.Laser Welding is as one of current advanced manufacturing interconnection technique, be through with high-intensity bombardment with laser beams to material surface, through the interaction between material and the laser, make the material fusing form the welding method of a kind of high-efficiency and precision that connects.Compare with conventional welding methods, it has, and power output is big, speed of welding is fast, welding seam deep width ratio is high, has very strong extensibility.Compare other conventional welding methods, Laser Welding has significant performance advantage aspect the welding of foamed aluminium packaging material.But because the existence of foamed aluminium pore space structure, in welding process, can cause its loose structure at high temperature can not support own wt and produce and subside.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of method for laser welding of foamed aluminium environmentally friendly packing material is provided; Through selecting suitable weld seam packing material; Make it in laser beam welding, can overcome the formation of subsiding and avoiding the commissure compact structure of pore space structure in the foamed aluminium porous material welding process, finally form qualified jointing, satisfy the requirement that connects for foamed aluminium in the packaging industry.
The object of the invention is achieved through following technical proposals:
A kind of method for laser welding of foamed aluminium environmentally friendly packing material, use in the commissure of foamed aluminium material with the essentially identical aluminium alloy of foamed aluminium material composition as the weld seam packing material, carry out laser weld.
Wherein said technological parameter: average laser power is 1400-1900w.
Defocusing amount is-0.5--1.5mm.
Weldering speed (laser beam translational speed) is 1-2cm/s.
Protective gas is an inert gas, and like argon gas, helium or nitrogen, gas flow is 10-12L/min.
In technical scheme of the present invention, use packing material in the commissure, in welding process, avoid subsiding of foamed aluminium loose structure; When material melts under the effect of laser thermal source; Formed closely knit seam organization after solidifying, the pore structure of less destruction foamed aluminium material itself has increased the density of texture of commissure; Improve the weight at welding line joint place, also changed the performance of welding point simultaneously.
Description of drawings
Fig. 1 is the enforcement sketch map of technical scheme of the present invention, and wherein 1 is the aluminium alloy packing material, and 2 is laser beam, and 3 is the foamed aluminium porous material.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
Adopt the solid continuous Nd: YAG laser instrument, its model are JK2003SM.The technical parameter of this laser apparatus is as shown in table 1.
Table 1JK2003SM laser instrument important technological parameters
| The mean power (W) of maximum output | 2000 |
| The impulse modulation peak power (W) of output | 4000 |
| Fibre diameter (μ m) | 600 |
| Pulse frequency Modulation frequency (Hz) | 100-1000 is adjustable |
| Hot spot adjustable diameter scope (mm) | 0.3-0.9 it is adjustable continuously |
In order to realize the relative motion between laser beam and the filling aluminum alloy, thereby reach the purpose of welding, the special welding machine of employing is the multi-axis numerical control laser process machine, and its model is: TDJG-1.
Employed foamed aluminium be with the trade mark be the ZL111 aluminium alloy as matrix material, adopt foam melt method to prepare, the design feature of this foamed aluminium is: be metallic matrix around the cavity, the metallic matrix sealing is born of the same parents' shape; Hole that volume is bigger and metallic matrix on every side form the multiaspect shape born of the same parents shape body of axles such as being approximately.The density of this foamed aluminium is 0.65 * 10
3Kg/m
3For the composition that makes packing material is identical with foamed aluminium material, the present invention selects for use the ZL111 aluminium alloy as the weld seam packing material.The chemical composition of ZL111 aluminium alloy is as shown in table 2.
The chemical composition (wt%) of table 2ZL111 aluminium alloy
| Si | Mg | Ti | Mn | Cu | Al |
| 8.0~10.0 | 0.4~0.6 | 0.1~0.35 | 0.1~0.35 | 1.3~1.8 | Surplus |
In laser beam welding, defocusing amount is meant the distance of laser beam foucing apart from surface of the work.The definition focus is when just in time being positioned at surface of the work, and defocusing amount is 0, the definition laser beam foucing be positioned at surface of the work with next be negative out of focus, define laser beam foucing and be positioned at more than the surface of the work, be positive out of focus.Defocusing amount is an important technical parameters, and the size of defocusing amount has directly influenced laser beam spot and acted on the size on aluminium alloy packing material surface, thereby the laser irradiation intensity on packing material surface is changed.In order to obtain laser deep penetration welding pattern, and then improve the depth-to-width ratio of weld seam, select negative defocusing amount for use.Technological parameter in the concrete laser beam welding is as shown in table 3.
Table 3 kind welding condition
Choose 2 blocks of foamed aluminium porous materials that will carry out laser to welding, the faying face of two blocks of foamed aluminiums that will dock carries out machining, guarantees the parallel of two interfaces; Simultaneously, two butt joints are polished the oxide on the aluminium surface that defoams; ZL111 aluminium alloy packing material is polished, remove its oxide on surface; The utilization positioning fixture carries out reasonably fixing to foamed aluminium porous material and aluminium alloy packing material, guarantees that the position remains unchanged in welding process; In the process of the test, the focal length of selecting laser lens for use is 160mm, through regulating the multi-axis numerical control laser process machine; Change laser facula in the lip-deep size of packing material, and output mode, power, laser beam translational speed (weldering speed) and protective gas and the flow velocity of laser instrument is provided with, start laser instrument then; Begin welding; After laser beam moves to the packing material end, stop laser instrument, accomplished the welding of foamed aluminium porous material.
The foregoing description is welded material afterwards carry out performance test; According to GB/T 2651-2008 " welding point stretching test method "; The banjo fixing butt jointing tensile strength values that records laser weld foamed aluminium porous material reaches 3.0Mpa; Reach the tensile strength of foamed aluminium porous material itself, satisfied GB/T 12467.2-2009 " the metal material fusion welding quality requires the part 2 full-quality to require ".
More than the present invention has been done exemplary description; Should be noted that; Under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (3)
1. the method for laser welding of a foamed aluminium environmentally friendly packing material is characterized in that, use in the commissure of foamed aluminium material with the essentially identical aluminium alloy of foamed aluminium material composition as the weld seam packing material, carry out laser weld.
2. the method for laser welding of a kind of foamed aluminium environmentally friendly packing material according to claim 1 is characterized in that, in the laser weld, said technological parameter is following: average laser power is 1400-1900w; Defocusing amount is-0.5--1.5mm; Weldering speed (laser beam translational speed) is 1-2cm/s; Protective gas is an inert gas, and like argon gas, helium or nitrogen, gas flow is 10-12L/min.
3. aluminium alloy is as the application of weld seam packing material in the foamed aluminium material laser weld.
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| CN2012101499573A CN102672354A (en) | 2012-05-07 | 2012-05-07 | Laser welding method of foamed aluminum green packaging material and application thereof |
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| CN2012101499573A CN102672354A (en) | 2012-05-07 | 2012-05-07 | Laser welding method of foamed aluminum green packaging material and application thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028892A (en) * | 2013-03-06 | 2014-09-10 | 北京有色金属研究总院 | Laser welding method applicable to aluminum alloy |
| CN104646869A (en) * | 2015-02-15 | 2015-05-27 | 中冶天工上海十三冶建设有限公司 | Mixed protection gas for large-scale aluminum container group forming welding |
| CN104708201A (en) * | 2015-03-13 | 2015-06-17 | 程涛 | Low-energy-consumption welding method for foamed aluminum with super-lager cross section |
| CN105328336A (en) * | 2015-11-13 | 2016-02-17 | 深圳先进技术研究院 | Laser welding method for preparing porous metal material |
| CN106513991A (en) * | 2016-12-05 | 2017-03-22 | 苏州大学 | Laser welding method for foamed aluminum alloy plate |
| CN106694886A (en) * | 2016-11-30 | 2017-05-24 | 苏州大学 | Method for preparing foamed aluminum sandwich panel by lasers |
| CN106694888A (en) * | 2016-12-31 | 2017-05-24 | 广东明路电力电子有限公司 | Cylindrical metal foam welding technology and metal foam plate roughening technology |
| CN109483054A (en) * | 2018-12-20 | 2019-03-19 | 北京大学深圳研究院 | A kind of docking laser soldering method of CFRTP and metal material |
| CN114505576A (en) * | 2022-03-05 | 2022-05-17 | 安阳工学院 | Laser welding method for nickel-based alloy/aluminum alloy or aluminum dissimilar material |
| CN114505576B (en) * | 2022-03-05 | 2024-06-04 | 安阳工学院 | Nickel base alloy/aluminum alloy or aluminum dissimilar material laser welding method |
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| CN101905379A (en) * | 2010-08-05 | 2010-12-08 | 武汉钢铁(集团)公司 | High strong weather resistance cold rolling container coating plate laser welding process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028892A (en) * | 2013-03-06 | 2014-09-10 | 北京有色金属研究总院 | Laser welding method applicable to aluminum alloy |
| CN104646869A (en) * | 2015-02-15 | 2015-05-27 | 中冶天工上海十三冶建设有限公司 | Mixed protection gas for large-scale aluminum container group forming welding |
| CN104708201A (en) * | 2015-03-13 | 2015-06-17 | 程涛 | Low-energy-consumption welding method for foamed aluminum with super-lager cross section |
| CN105328336A (en) * | 2015-11-13 | 2016-02-17 | 深圳先进技术研究院 | Laser welding method for preparing porous metal material |
| CN106694886A (en) * | 2016-11-30 | 2017-05-24 | 苏州大学 | Method for preparing foamed aluminum sandwich panel by lasers |
| CN106513991A (en) * | 2016-12-05 | 2017-03-22 | 苏州大学 | Laser welding method for foamed aluminum alloy plate |
| CN106694888A (en) * | 2016-12-31 | 2017-05-24 | 广东明路电力电子有限公司 | Cylindrical metal foam welding technology and metal foam plate roughening technology |
| CN109483054A (en) * | 2018-12-20 | 2019-03-19 | 北京大学深圳研究院 | A kind of docking laser soldering method of CFRTP and metal material |
| CN114505576A (en) * | 2022-03-05 | 2022-05-17 | 安阳工学院 | Laser welding method for nickel-based alloy/aluminum alloy or aluminum dissimilar material |
| CN114505576B (en) * | 2022-03-05 | 2024-06-04 | 安阳工学院 | Nickel base alloy/aluminum alloy or aluminum dissimilar material laser welding method |
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Application publication date: 20120919 |