CN108690997A - A kind of aluminum alloy surface hardening process - Google Patents
A kind of aluminum alloy surface hardening process Download PDFInfo
- Publication number
- CN108690997A CN108690997A CN201810607796.5A CN201810607796A CN108690997A CN 108690997 A CN108690997 A CN 108690997A CN 201810607796 A CN201810607796 A CN 201810607796A CN 108690997 A CN108690997 A CN 108690997A
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- workpiece
- laser
- polishing
- deionized water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/04—Electroplating with moving electrodes
- C25D5/06—Brush or pad plating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
- C25D5/44—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
Abstract
A kind of aluminum alloy surface hardening process is related to laser and plating application field, solves the problems, such as the raising of aluminum alloy surface hardness.The preparation method includes:Using abrasive paper for metallograph polishing aluminum alloy surface, enabling aluminum alloy to surface becomes bright and clean smooth;Workpiece after polishing described in step 1 is placed on polishing treatment on metallographic-sample polisher;Place ultrasonic cleaning in deionized water;Using the polished part surface construction nickel coating after cleaning of the brush electroplating method described in step 2, acetone is respectively adopted and deionized water carries out ultrasonic cleaning, surface is then subjected to drying and processing;Workpiece after brush plating after drying described in step 3 is used into laser processing, its surface is made to realize groove structure;Place ultrasonic cleaning 5min or so in deionized water;Laser Compound Machining workpiece after cleaning described in step 4 is placed on drying box heat treatment, temperature and time is respectively 150 DEG C and 2 hours, is then cooled to room temperature, and the hardness for enabling aluminum alloy to surface improves.
Description
Technical field
The invention belongs to laser and plating application field, and in particular to a kind of aluminum alloy surface hardening process.
Background technology
With the rapid development of Chinese industrial, the protection of parts is increasingly valued by people, and aluminium alloy has height
Specific strength and the advantages that preferable processability, be widely used in fields such as space flight, communications and transportation, engineering and structure applications.
The problems such as shortcoming is as friction material, and that there are matter is soft for aluminium alloy, abrasion is big, adhesive wear is serious.There are a large amount of passes at present
In the research for the wear-resisting property for improving aluminum alloy surface, but have focused largely on heat treatment, differential arc oxidation, ion implanting or thermal spraying
In terms of the modification of the surfaces such as ceramic layer.Brush Electroplating Technique and laser technology are drawn in the application rapid proliferation in Surface Engineering field at present
The concern of researcher is played.And so that aluminum alloy surface obtains cure process research very few for the method that two kinds of technologies are combined.
Invention content
In order to solve the problems in the existing technology, the present invention provides a kind of aluminum alloy surface hardening process,
Case hardness is enabled aluminum alloy to be improved.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of aluminum alloy surface hardening process, the preparation method include that steps are as follows:
Step 1:Using abrasive paper for metallograph polishing aluminum alloy surface, enabling aluminum alloy to surface becomes bright and clean smooth;
Step 2:Workpiece after polishing described in step 1 is placed on polishing treatment on metallographic-sample polisher;It is placed on
Ultrasonic cleaning in deionized water;
Step 3:Polished part surface construction nickel coating after being cleaned described in step 2 using brush electroplating method, Brush Plating
Time 10min, voltage 8-16V;Involved Brush Plating plating solution composition is: NiSO4.6H2O (265g/L), Triammonium citrate (55g/
L), ammonium hydroxide (105g/L) and ammonium acetate (23g/L), wherein plating solution pH are 7.5;Acetone is respectively adopted and deionized water is surpassed
Sound wave cleans, and surface is then carried out drying and processing;
Step 4:Workpiece after brush plating after being dried described in step 3 is used into laser processing, makes its surface
Realize groove structure;Place ultrasonic cleaning 5min or so in deionized water;
Step 5:By described in step 4 clean after laser Compound Machining workpiece be placed on drying box heat treatment, temperature and
Time is respectively 150 DEG C and 2 hours, is then cooled to room temperature, and the hardness for enabling aluminum alloy to surface improves.
The beneficial effects of the invention are as follows:The aluminum alloy surface cure process preparation method of the present invention, obtained aluminium alloy table
Face coating has relatively special surface texture, and characteristic possessed by this structure is single Way by Brush Plating Technique and single laser technology
It is difficult to realize.Its aluminum alloy surface cure process having can be widely applied to the necks such as automobile making, steamer, chemical industry, space flight
The various component surfaces in domain.It is compared with alloy matrix aluminum, common single Brush Plating, the hardness and rub resistance on surface obtain
It improves.Gash depth can be adjusted by laser work(in composite construction.
Description of the drawings
Fig. 1 Brush Plating laser Compound Machining preparation method model schematics;
Specimen surface after Fig. 2 alloy matrix aluminum fretting wears;
Specimen surface after fretting wear after Fig. 3 Brush Plating laser Compound Machinings
Specific implementation mode
Applicant is realized with the method that laser processing technology is combined at the hardening of aluminum alloy surface using Brush Electroplating Technique
Reason.The microcosmic special construction that surface has is prepared using Brush Plating laser composite processing method, this structure is single brush plating skill
What art and single laser processing technology were difficult to realize, therefore the present invention uses this surface texture prepared by Brush Plating laser, carries
The high hardness and wear resistance on surface so that surface obtains cure process.
Technical scheme of the present invention is described further below in conjunction with specific example.In the following examples, used
Matrix uses aluminium alloy, the present invention is not restricted to these example, as long as basis material conduction.
The present invention is described in further details with reference to Fig. 1 and example.
A kind of aluminum alloy surface hardening process, the preparation method include that steps are as follows:
1) workpiece is divided:Aluminium sheet is cut using electric spark wire cutting machine, obtains 20mm × 20mm × 2mm sizes;
2) pre-grinding is handled:Using abrasive paper for metallograph (600 mesh, 800 mesh, 1000 mesh, 1500 mesh and 2000 mesh) to aluminium after cutting
Alloy sheet carries out grinding process, obtains relatively bright and clean smooth surface;
3) polishing treatment:Aluminum alloy flake after polishing is processed by shot blasting using metallographic-sample polisher so that aluminium closes
The roughness of gold surface is less than 0.05 μm;The wherein model PG-A of metallographic-sample polisher, polishing time 15min;Throwing
Workpiece, which is placed in the supersonic wave cleaning machine equipped with deionized water, after light carries out ultrasonic cleaning;
4) the surface brush plating of sample:Nickel ion deposition is carried out to surface of polished using DC power supply, is adopted in experimentation
It is 12V with voltage, the reciprocating motion speed control of plated pen and workpiece is in 10m/min, to 10 minutes brush plating workpiece time, in room temperature
Lower progress, wherein Brush Plating plating solution composition are:NiSO4.6H2O (265g/L), Triammonium citrate (55g/L), ammonium hydroxide (105g/L)
It is 7.5 or so with ammonium acetate (23g/L), plating solution pH;Brush plating treated sample is respectively adopted acetone and deionized water are utilized
Supersonic wave cleaning machine carries out surface clean, removes remaining impurity during brush plating, and the ultrasonic cleaning time is 5min;Using blowing
Wind turbine carries out simple drying and processing to specimen surface after cleaning;
5) it laser machines:Laser treatment, laser marking machine model are carried out to brush plating surface after drying using laser marking machine
It is swept for HBS-GQ-20, scan power 10w, sweep speed 500mm/s, scan frequency 20kHz, wavelength 1064nm
It is 2 times to retouch number;In brush plating surface construction groove-like structure, trench spacing is 0.1 ㎜, laser processing it is deep-controlled on 5 μm of left sides
It is right;
6) it is heat-treated:Brush Plating laser complex tool surface is heat-treated using drying box, setting heating temperature is
150 DEG C, heat treatment time be 2 hours, then with drying box one piece be cooled to room temperature;
7) friction-wear test:Brush Plating laser prepares surface and is placed on progress fretting wear examination on friction wear testing machine
It tests, load 20N, test period 20min, wherein the model HX-1000TM/LCD of microhardness testers.
Fig. 2 handles rear surface figure for alloy matrix aluminum specimen surface by friction wear testing machine, it can be seen from the figure that
There are circular scratch marks in friction-wear test rear surface.
Fig. 3, which is that Brush Plating laser is compound, prepares the rubbed abrasion tester rear surface figure of sample, it can be found that electricity from figure
Brush plating laser Compound Machining handles rear surface hardness and increases, and specimen surface does not obviously become substantially after rubbed abrasion tester
Change.
Polishing matrix, single laser processing sample is shown below and Brush Plating laser is compound prepares specimen surface hardness number
Contrast table, it can be deduced that matrix surface hardness obtains the variation of matter after a kind of aluminum alloy surface hardening process of application, such as table 1
It is shown:
1 microhardness testers of table measure hardness number
Claims (1)
1. a kind of aluminum alloy surface hardening process, which is characterized in that the preparation method includes that steps are as follows:
Step 1:Using abrasive paper for metallograph polishing aluminum alloy surface, the bright and clean smooth of surface change is enabled aluminum alloy to;
Step 2:Workpiece after polishing described in step 1 is placed on polishing treatment on metallographic-sample polisher;Be placed on from
Ultrasonic cleaning in sub- water;
Step 3:Utilize the polished part surface construction nickel coating after cleaning of the brush electroplating method described in step 2, center brush
Plate time 10min, voltage 8-16V;The Brush Plating plating solution composition is:NiSO4.6H2O (265g/L), Triammonium citrate
(55g/L), ammonium hydroxide (105g/L) and ammonium acetate (23g/L), plating solution pH are 7.5;Acetone is respectively adopted and deionized water is surpassed
Sound wave cleans, and surface is then carried out drying and processing;
Step 4:Workpiece after brush plating after drying described in step 3 is used into laser processing, keeps its surface real
Existing groove structure, wherein trench spacing are 0.1 ㎜, and gash depth is 5 μm;Place ultrasonic cleaning 5min in deionized water;
Step 5:By the laser Compound Machining workpiece after the cleaning described in step 4 be placed on drying box heat treatment, temperature and when
Between be respectively 150 DEG C and 2 hours, then cool to room temperature, enable aluminum alloy to surface hardness raising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810607796.5A CN108690997A (en) | 2018-06-13 | 2018-06-13 | A kind of aluminum alloy surface hardening process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810607796.5A CN108690997A (en) | 2018-06-13 | 2018-06-13 | A kind of aluminum alloy surface hardening process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108690997A true CN108690997A (en) | 2018-10-23 |
Family
ID=63848224
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810607796.5A Pending CN108690997A (en) | 2018-06-13 | 2018-06-13 | A kind of aluminum alloy surface hardening process |
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| CN (1) | CN108690997A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401185A (en) * | 2015-12-23 | 2016-03-16 | 长春理工大学 | Aluminum alloy coupled biomimetic self-cleaning surface and preparation method thereof |
| CN205241817U (en) * | 2015-12-23 | 2016-05-18 | 长春理工大学 | Bionical automatically cleaning structure of aluminum alloy coupling |
| CN107740148A (en) * | 2017-10-27 | 2018-02-27 | 吉林大学 | It is a kind of in the without polishing quick method for preparing bionic super-hydrophobic surface of copper-based surfaces |
-
2018
- 2018-06-13 CN CN201810607796.5A patent/CN108690997A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401185A (en) * | 2015-12-23 | 2016-03-16 | 长春理工大学 | Aluminum alloy coupled biomimetic self-cleaning surface and preparation method thereof |
| CN205241817U (en) * | 2015-12-23 | 2016-05-18 | 长春理工大学 | Bionical automatically cleaning structure of aluminum alloy coupling |
| CN107740148A (en) * | 2017-10-27 | 2018-02-27 | 吉林大学 | It is a kind of in the without polishing quick method for preparing bionic super-hydrophobic surface of copper-based surfaces |
Non-Patent Citations (4)
| Title |
|---|
| 张世凭等: "《特种加工技术》", 31 August 2014 * |
| 李晶等: "电刷镀-激光加工法制备耦合结构及复合特性研究", 《材料工程》 * |
| 李晶等: "铝合金电刷镀与激光微加工耦合制备超疏水表面及其特性", 《中国机械工程》 * |
| 赵言辉: "电刷镀-激光复合强化铝基模具材料表面性能试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Application publication date: 20181023 |
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| RJ01 | Rejection of invention patent application after publication |