CN1660510A - Method for manufacturing metallic products and production - Google Patents
Method for manufacturing metallic products and production Download PDFInfo
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- CN1660510A CN1660510A CN 200410006663 CN200410006663A CN1660510A CN 1660510 A CN1660510 A CN 1660510A CN 200410006663 CN200410006663 CN 200410006663 CN 200410006663 A CN200410006663 A CN 200410006663A CN 1660510 A CN1660510 A CN 1660510A
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Abstract
A method for preparing the product of the soft metal difficult to machine, such as Mg-alloy or MgAl-alloy, features a vacuum sputtering method is used for modifying the surface of said product. Said Mg-alloy product has high surface quality.
Description
Technical field
The invention relates to a kind of metal product autofrettage and products thereof.It comprises the finished product that metal surface upgrading method and this method are made, can carry out at general sputtering machine table, can be provided with surface-coated in for example magnesium alloy finished product shell wall, the process of the improving surface quality of magnesium alloy workpiece is provided, be to place the sputtering machine table execution surface-coated the metal finished product, prevent the detract quality of follow-up application baking vanish of rough surface, have the surface-defect repairing function; The Consideration of the target of its use is based on improving surface quality, especially at the soft difficult-to-machine metal of magnesium alloy and magnadure and so on.
Background technology
As magnesium alloy and magnadure production industry cognitive, this type of alloy is because in light weight, its proportion can be as plasticlike, use light, therefore but still having the every good speciality of metal, is the relevant dealer's of various in recent years information products the positive research and development and the project of construction, the die cast of its employed technical approach such as full liquid state, semi-solid thixotroping moulding and solid-state punching press and forging molding etc., applicable to the place of various application, so that light demand is achieved; As notebook computer common on the information industry and personal digital assistant, if use the magnesium alloy case device then can help user's weight reduction; Yet from the viewpoint of making, in places such as the mould of some magnesium alloy assembly factory or equipment, magnesium alloy molded flow behavior is improved and is promoted the excellent surface speciality then to be difficult to avoid, and promptly need research and develop to improve device and do over again and fraction defective to be used for reducing in this manufacture process; Therefore the improvement that can say manufacture process is to increase the magnesium alloy of research and development industry elementary item gradually, and the mode of its construction also is the emphasis of each tame manufacturer research and development, and the reduction of running cost is studied especially and improved emphasis.The research and development with keen competition field of can saying so.
The die cast of full liquid state, semi-solid thixotroping moulding and modes such as solid-state punching press and forging molding are contained in the manufacturing of general magnesium-alloy material.Above-described magnesium alloy material imposes epithelium corrosion protection anti-oxidant treatment again after processing, then carry out operations such as application baking vanish or plating according to practical use and demand, to reach final required magnesium alloy manufactured goods.Yet, because magnesium alloy materials imports various pores in the early stage of producing in the middle of the manufacture process usually unavoidablely.This type of tissue defects further enlarges and becomes the accumulation point of residual acid, residual alkali and aqueous vapor in follow-up epithelium corrosion protection anti-oxidant treatment process.
Tradition for two kinds of main modes in the known technology of the subsequent manufacturing processes of magnesium-alloy material is: (one), for the production of inner member, be with mould casting after machining, impose and finish after the anti-oxidant corrosion protection of phosphate is handled; Or (two), for the production of outward appearance part, foundry goods after machining, after imposing the anti-oxidant corrosion protection of phosphate and handling, is imposed and finishes after the application baking vanish is handled.
But owing to handle end of a period at epithelium, the phenomenon of coating in the tissue defects liquid phase before producing relatively in the manufacturing process, and continue to carry out corrosion reaction for the magnesium alloy base material.This type of defective because the lasting expansion of pit position and scope not only is repugnant to the eye, even has influence on the intensity of structural portion product, causes the future trouble of security for the structural member of adorning in the magnesium alloy.Especially bad, magnesium-alloy material for numerous outward appearances uses, the existence of above-mentioned pore tissue defects, not only can continue to carry out corrosion reaction for nearly top layer base material, in application baking vanish process,, make residual liquid in the hole because of high-temperature gasification more because the temperature effect in when baking, and then cause the star cloth formula point-like explosion of baking vanish layer, cause the bad of application.Therefore, known magnesium alloy application product often needs repeatedly to do over again and solves the bad phenomenon in surface, not only causes the waste of manpower, also because the rising of production cost and the decline of productive rate make the whole competitiveness of magnesium-alloy material reduce.
In known device, one as shown in Figure 1 the production procedure of magnesium alloy workpiece after handling with traditional phosphate and baking vanish arranged, its effect as shown in Figure 4, coarse injustice and problem such as perforation with surface, it is cheap with can treatment temperature higher situation and operating cost therefore to be necessary to seek out a kind of technology of system arrangement more easily.
Summary of the invention
Main purpose of the present invention is to provide a kind of metal product autofrettage, it is energy treatment surface upgrading and the cheap metal surface upgrading method of operating cost that has function of prevent erosion concurrently, can be used for external member and internals, can provide high yield high-quality effect.
In order to reach above-mentioned purpose, the present invention with known metal product processing procedure as the invention with reference to processing procedure, be matched with and vacuum splashing and plating surfaction processing processing procedure be set after machining or phosphate are handled, Mg alloy surface upgrading method so develop to form easy application baking vanish treatment surface.
Method of the present invention comprises the following step: (1) carries out surfaction to obtain the upgrading workpiece with vacuum splashing and plating equipment to the norminal size surface of the work; And (2) this upgrading workpiece is done application or baking vanish is handled to make metal product.
Article of the present invention comprise following structure: metal body; The surfaction plated film is covered on this metal body; And external coating or baking vanish, be covered on this surfaction plated film.
In other words, metal product autofrettage of the present invention, it comprises the following step:
(1) with vacuum splashing and plating equipment the norminal size surface of the work is carried out surfaction to obtain the upgrading workpiece; And
(2) this upgrading workpiece being done application or baking vanish handles to produce metal product.
Described metal product autofrettage, further comprised two steps before the upgrading step: (1) makes preliminary workpiece with raw metal with former; (2) should preliminary workpiece finishing becoming norminal size workpiece with machining equipment.
Described metal product autofrettage further comprises a step after the machining pre-shaping step, be with this norminal size workpiece in addition phosphate handle, carry out the surfaction step again.
Described metal product autofrettage, when wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work plated film upgrading, film sputtering and coating processing procedure vacuum degree control was 1 * 10
-1To 1 * 10
-5Between the torr.
Described metal product autofrettage, when wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work plated film upgrading, the sputter radio-frequency power was controlled between 20W～150W.
Described metal product autofrettage, after wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work plated film upgrading, film thickness was controlled between 0.1 to 3.5 micron.
Described metal product autofrettage, after wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work upgrading, the composition of upgrading material was chromium nitride (CrN～Cr2N), titanium nitride (TiN) or TiAlN ((Ti, Al) N or other a plated film material.
Described metal product autofrettage, wherein this raw metal is magnesium alloy materials such as AZ91, AZ31, AM50 or AM60.
Described metal product autofrettage, wherein the former of this preliminary workpiece is complete liquid die cast, semi-solid thixotroping moulding or the solid-state punching press and the mechanical pattern of forging molding.
Metal product of the present invention, its structure comprises:
Metal body;
The surfaction plated film is covered on this metal body; And
External coating or baking vanish are covered on this surfaction plated film.
Described metal product further comprises and changes into epithelium between this metal body and this surfaction plated film.
Described metal product, wherein the thin-film material of this surfaction plated film consists of chromium nitride (CrN～Cr2N), titanium nitride (TiN) or TiAlN ((Ti, Al) N or other plated film material.
Described metal product, wherein this metal body is constituted by magnesium alloy metal materials such as AZ91, AZ31, AM50 or AM60.
Beneficial effect of the present invention is the importing in conjunction with traditional magnesium alloy molded manufacture process and vacuum splashing and plating manufacture process, makes shaping workpiece before final application baking vanish, carries out the surfaction engineering earlier.Organize mutually control by appropriate metal targets and the adjustment and the plated film that feed the selecting for use of gas, vacuum splashing and plating processing parameter, thus the magnesium alloy workpiece of acquisition surface of good upgrading.Make in follow-up application baking vanish process, reduced effectively the enamelled coating explosion defective, reduce rework rate, to reach the acceptance rate that significantly improves magnesium-alloy material and the effect of productivity.
Relatively go up, relevant preparation method's of the present invention main difference is after the magnesium alloy workpiece after the processing is imposed traditional epithelium processing, carrying out giving the processing of vacuum splashing and plating upgrading earlier before final baking vanish is handled, then carrying out the application baking vanish again handles, to obtain disclosed magnesium-alloy material, satisfactorily to meet the materials demand of magnesium alloy member with good application acceptance rate.For the production procedure of some magnesium-alloy material, even can after machining, directly carry out the processing of vacuum dura mater sputter, and exempt the handling procedure that changes into of traditional middle epithelium reaction.In other words, vacuum dura mater sputter is handled the surfaction operation that not only can be used as magnesium-alloy material, and the epithelium that changes into that also can replace traditional chemical wet immersion reacts, so that good corrosion protection and anti-oxidant function to be provided.
In order further to disclose feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet appended graphic only provide with reference to and the explanation usefulness, be not to be used for the present invention is limited.
Description of drawings
Fig. 1 is known magnesium-alloy material manufacture method step schematic diagram;
Fig. 2 is a magnesium-alloy material manufacture method step schematic diagram of the present invention;
Fig. 3 is another magnesium-alloy material manufacture method of the present invention embodiment step schematic diagram;
Fig. 4 is made the finished product schematic diagram by known magnesium-alloy material manufacture method;
Fig. 5 is made the finished product schematic diagram by magnesium-alloy material manufacture method of the present invention.
Wherein, description of reference numerals is as follows:
1, blemish 2, magnadure body 3, hollow-out parts
The specific embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, be the production procedure of magnesium alloy workpiece after handling with traditional phosphate and baking vanish, and before behind phosphate, handling with baking vanish, impose the vacuum splashing and plating surfaction engineering that the present invention imports, the flow process of then carrying out final application baking vanish processing again compares schematic diagram.
Shown in Fig. 5 (product surface of the present invention) and Fig. 4 (known products surface), then be the schematic diagram of two kinds of final products that processing procedure obtained, wherein blemish 1 as shown in Figure 4 can cause application and baking vanish defective.And wherein magnadure body 2 may be complex-shaped structure, as hollow-out parts 3 or the like.Therefore compare by Fig. 4 and Fig. 5 two, significantly presented the effect that the present invention promotes for the magnesium-alloy material surface nature.About the reason of processing procedure restriction of the present invention, special experimental example explanation as the back of cooperating:
The present invention has following condition:
1. vacuum degree condition: sputter process is handled to be needed implement under the environment of vacuum, causes oxidative phenomena with the impure etc. of the raising of avoiding Yin Wendu in the process, cavity atmosphere, and then influence plated film and the interface tack of being plated base material.Therefore, spy of the present invention with film sputtering and coating manufacture process vacuum degree control 1 * 10
-1To 1 * 10
-5Between the torr.
2. radio-frequency power condition: when the sputter radio-frequency power is lower than 20W, impact the power deficiency, can't obtain surface of good upgrading effect.Simultaneously, excessive radio-frequency power applies, and not only because of impacting the jumbo raising of power, causes the generation that is easy to of workpiece to be out of shape, and the adhesive force between plated film and base material is not good yet.Therefore, suitable sputter radio-frequency power need be controlled between 20W～150W.
3. thickness scope: the control of sputtering thin film thickness is an epochmaking factor of magnesium alloy work-piece surface upgrading.Really, reduce processing time, the acceleration productive rate that thickness can shorten sputter process effectively.Yet therefore the poor effect that thickness can make the coating of base material pore when not enough can't obtain the purpose for the application quality-improving that the present invention desires to show.On the other hand, when sputtering thin film thickness is blocked up, though preferable pore coating effect can be provided, yet, because the lifting of residual stress, joint strength deficiency between plated film layer and base material, the product that makes final baking vanish handle can't satisfy usually tests for the tack test requirements with hundred lattice, thereby loses its practicality.So suitable sputtering thin film thickness must be controlled between 0.1 to 3.5 micron, with the excellent surface upgrading effect of guaranteeing that the present invention is bragged about.
Example of the present invention will be in following explanation; The present invention is directed to different metal targets, the adjustment that cooperates atmosphere in the vacuum chamber is then carried out application again and is handled with the various Jie's metal coating with heterogeneity and structure composition of sputter coating, inquires into the effect of dura mater composition for the Mg alloy surface upgrading.
Table one is depicted as the present invention via selecting single metal targets or two or more metal targets for use, then by the change of the partial pressure concentration that feeds, and the adjustment of sputter parameter, carry out the result that the Mg alloy surface upgrading is obtained.Show by the result, no matter consist of chromium nitride (CrN～Cr2N), titanium nitride (TiN) or TiAlN ((Ti, Al) N) or other plated film material etc. for the sputter dura mater, under appropriate manufacture process condition control of the present invention, all can reach effect with excellent surface upgrading.Obvious, the present invention's scope applicatory not only can be suitable for several Jie's metallic compounds described in the literary composition, and it also is suitable for without exception for general dura mater coating.
Table one: the film sputtering and coating kind is for the influence of final application product quality.
| Plated film is formed | The test of hundred lattice | Salt spray test | Pore covers |
| Chromium nitride (CrN) | Good | Good | Good |
| Titanium nitride (TiN) | Good | Good | Good |
| TiAlN (Ti, Al) N | Good | Good | Good |
By adhere to (test of hundred lattice) and the characteristic that anti-corrosion (salt spray test) and pore cover so that upper film is wear-resisting, learn that method of the present invention makes general magnesium-alloy material greatly be improved because of the Facing material problem that machining causes.Especially the surface abrasion resistance of magnesium alloy and hardness are generally relatively poor, the sputtering thin film thickness that the present invention caused moderate (0.1 to 3.5 micron), just in time can meet the multi-functional effect of abrasion hardness and application corrosion protection simultaneously, be rare invention, be the obvious progress in dog-eat-dog field.
Handle via manufacture process of the present invention, can obtain to carry out the surfaction engineering of magnesium-alloy material by the coating of vacuum splashing and plating chromium nitride, titanium nitride, TiAlN or the like Jie metallic film.With ion bombardment, surface roughness adjustment, pore is prevented and flatten steps such as reparation, significantly promote magnesium-alloy material in the acceptance rate of follow-up application baking vanish, the effect of reduction rework rate, so that a kind of manufacture method of making the magnesium-alloy material with good surface properties by the surfaction engineering of Coating Pretreatment to be provided thereby reach.Find that via a series of complete discussion processing procedure of the present invention is not only applicable to general AZ91 material commonly used, also be applicable to other habitual magnesium alloy material such as AZ31, AM50, AM60 simultaneously.No matter the mode of production of workpiece is modes such as the die cast by full liquid state, semi-solid thixotroping moulding and solid-state punching press and forging molding, also all is suitable for without exception.In addition, the employing of sputtering thin film processing procedure can be carried out with known ion beam sputtering deposition method, electricity slurry sputtering method or vacuum reaction sputtering method etc.The similarities and differences because of processing mode do not influence the effect of coating layer for the magnesium alloy work-piece surface upgrading.Therefore, Patent right request is to contain the relevant sputter of the commercial magnesium-alloy material of all molding manufacture procedures and all to handle processing procedure.
As shown in Figures 2 and 3, further illustrate the present invention at this and comprise following steps:
(1) with vacuum splashing and plating equipment the norminal size surface of the work is carried out surfaction to obtain the upgrading workpiece; And
(2) this upgrading workpiece being done application or baking vanish handles to make metal product.
Below narrate possibility embodiment of the present invention: the present invention can further comprise two steps before the upgrading step: (1) makes preliminary workpiece with raw metal with former; (2) with machining equipment should be preliminary workpiece finishing becoming norminal size workpiece; And can further comprise a step after the machining pre-shaping step, be with this norminal size workpiece in addition phosphate handle, carry out the surfaction step again; When wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work plated film upgrading again, film sputtering and coating processing procedure vacuum can be controlled in 1 * 10
-1To 1 * 10
-5Between the torr; And when wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work plated film upgrading, the sputter radio-frequency power can be controlled between 20W～150W; And after wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work plated film upgrading, film thickness was controlled between 0.1 to 3.5 micron; After wherein this vacuum splashing and plating equipment was made the upgrading workpiece to this norminal size surface of the work upgrading again, the composition of upgrading material can be chromium nitride (CrN～Cr2N), titanium nitride (TiN) or TiAlN ((Ti, Al) N or other plated film material etc.; Wherein this raw metal can be magnesium alloy materials such as AZ91, AZ31, AM50 or AM60; Generally speaking, wherein the former of this preliminary workpiece is complete liquid die cast, semi-solid thixotroping moulding or the solid-state punching press and the mechanical pattern of forging molding.
Product configurations of the present invention comprises: metal body; The surfaction plated film is covered on this metal body; And external coating or baking vanish, be covered on this surfaction plated film; Also can further comprise and change into epithelium between this metal body and this surfaction plated film; Wherein the composition of the thin-film material of this surfaction plated film can be chromium nitride (CrN～Cr2N), titanium nitride (TiN) or TiAlN ((Ti, Al) N or other plated film material etc. again; Wherein this metal body is constituted by magnesium alloy metal materials such as AZ91, AZ31, AM50 or AM60.
Characteristics of the present invention comprise:
1. reduced effectively the enamelled coating explosion defective, reduce rework rate, to reach the acceptance rate that significantly improves magnesium-alloy material and the effect of productivity.
2. vacuum dura mater sputter is handled the surfaction operation that not only can be used as magnesium-alloy material, and the epithelium that changes into that also can replace traditional chemical wet immersion reacts, so that good corrosion protection and anti-oxidant function to be provided.
3. no matter the mode of production of workpiece is modes such as the die cast by full liquid state, semi-solid thixotroping moulding and solid-state punching press and forging molding, also all is suitable for without exception.
4. the employing of sputtering thin film processing procedure can carry out with known ion beam sputtering deposition method, electricity slurry sputtering method or vacuum reaction sputtering method etc., but elasticity is used the idle board of factory.
5. be not only applicable to general AZ91 material commonly used, be applicable to other habitual magnesium alloy material such as AZ31, AM50, AM60 simultaneously yet.
6. be applicable to that the manufacture of magnesium-alloy material contains the die cast of full liquid state, semi-solid thixotroping moulding and mode such as solid-state punching press and forging molding.
The above only is a preferable possible embodiments of the present invention, is not so promptly limits to claim of the present invention, and the equivalent structure that every application specification of the present invention and accompanying drawing content are done changes, and all in like manner is contained in the scope of the present invention.
Claims (13)
1, a kind of metal product autofrettage is characterized in that comprising the following step:
(1) with vacuum splashing and plating equipment the norminal size surface of the work is carried out surfaction to obtain the upgrading workpiece; And
(2) this upgrading workpiece being done application or baking vanish handles to make metal product.
2, metal product autofrettage as claimed in claim 1, it is characterized in that further comprising two steps before the upgrading step: (1) makes preliminary workpiece with raw metal with former; (2) should preliminary workpiece finishing becoming norminal size workpiece with machining equipment.
3, metal product autofrettage as claimed in claim 2 is characterized in that further comprising a step after the machining pre-shaping step, be with this norminal size workpiece in addition phosphate handle, carry out the surfaction step again.
4, metal product autofrettage as claimed in claim 1, when it is characterized in that this vacuum splashing and plating equipment is made the upgrading workpiece to this norminal size surface of the work plated film upgrading, film sputtering and coating processing procedure vacuum degree control is 1 * 10
-1To 1 * 10
-5Between the torr.
5, metal product autofrettage as claimed in claim 1, when it is characterized in that this vacuum splashing and plating equipment is made the upgrading workpiece to this norminal size surface of the work plated film upgrading, the sputter radio-frequency power is controlled between 20W～150W.
6, metal product autofrettage as claimed in claim 1, it is characterized in that this vacuum splashing and plating equipment is made the upgrading workpiece to this norminal size surface of the work plated film upgrading after, film thickness is controlled between 0.1 to 3.5 micron.
7, metal product autofrettage as claimed in claim 1, it is characterized in that this vacuum splashing and plating equipment is made the upgrading workpiece to this norminal size surface of the work upgrading after, the upgrading material consist of chromium nitride, titanium nitride or TiAlN or other plated film material.
8, metal product autofrettage as claimed in claim 1 is characterized in that this raw metal is AZ91, AZ31, AM50 or AM60 magnesium alloy material.
9, metal product autofrettage as claimed in claim 2, the former that it is characterized in that this preliminary workpiece is complete liquid die cast, semi-solid thixotroping moulding or the solid-state punching press and the mechanical pattern of forging molding.
10, a kind of metal product is characterized in that its structure comprises:
Metal body;
The surfaction plated film is covered on this metal body; And
External coating or baking vanish are covered on this surfaction plated film.
11, metal product as claimed in claim 10 is characterized in that further comprising and changes into epithelium between this metal body and this surfaction plated film.
12, metal product as claimed in claim 10, it is characterized in that this surfaction plated film thin-film material consist of chromium nitride, titanium nitride or TiAlN or other plated film material.
13, metal product as claimed in claim 10 is characterized in that this metal body is constituted by AZ91, AZ31, AM50 or AM60 magnesium alloy metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100066630A CN100376334C (en) | 2004-02-25 | 2004-02-25 | Method for manufacturing metallic products and production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100066630A CN100376334C (en) | 2004-02-25 | 2004-02-25 | Method for manufacturing metallic products and production |
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| CN1660510A true CN1660510A (en) | 2005-08-31 |
| CN100376334C CN100376334C (en) | 2008-03-26 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133837B (en) * | 2010-01-26 | 2013-01-09 | 汉达精密电子(昆山)有限公司 | Magnesium alloy appearance processing method |
| CN104195517A (en) * | 2014-08-29 | 2014-12-10 | 南京工程学院 | Method for reducing residual stress of surface coating of biological medical magnesium alloy |
| CN104213091A (en) * | 2014-08-29 | 2014-12-17 | 南京工程学院 | Method for improving bonding property of magnetron sputtering TiN coating on biomedical magnesium alloy surface |
| CN104451549A (en) * | 2014-11-28 | 2015-03-25 | 广东欧珀移动通信有限公司 | Metal workpiece and outer surface spray processing method of metal workpiece |
| CN108245714A (en) * | 2016-12-29 | 2018-07-06 | 吕传胜 | The preparation method of the magnesium alloy implant material of alternative stage degradation |
| CN111842076A (en) * | 2020-06-24 | 2020-10-30 | 肇庆宏旺金属实业有限公司 | Preparation method of champagne anti-fingerprint stainless steel |
| CN111842085A (en) * | 2020-06-24 | 2020-10-30 | 肇庆宏旺金属实业有限公司 | Preparation method of brown fingerprint-resistant stainless steel |
| CN111850487A (en) * | 2020-06-24 | 2020-10-30 | 肇庆宏旺金属实业有限公司 | Preparation method of rose gold fingerprint-resistant stainless steel |
| CN111876730A (en) * | 2020-06-24 | 2020-11-03 | 肇庆宏旺金属实业有限公司 | Preparation method of titanium-gold fingerprint-resistant stainless steel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58139595A (en) * | 1982-02-13 | 1983-08-18 | Onkyo Corp | Diaphragm for acoustic transducer |
| JPH0448697A (en) * | 1990-06-13 | 1992-02-18 | Kowa Kogyosho:Kk | Electromagnetic shielding material and manufacture thereof |
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2004
- 2004-02-25 CN CNB2004100066630A patent/CN100376334C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133837B (en) * | 2010-01-26 | 2013-01-09 | 汉达精密电子(昆山)有限公司 | Magnesium alloy appearance processing method |
| CN104195517A (en) * | 2014-08-29 | 2014-12-10 | 南京工程学院 | Method for reducing residual stress of surface coating of biological medical magnesium alloy |
| CN104213091A (en) * | 2014-08-29 | 2014-12-17 | 南京工程学院 | Method for improving bonding property of magnetron sputtering TiN coating on biomedical magnesium alloy surface |
| CN104213091B (en) * | 2014-08-29 | 2017-04-12 | 南京工程学院 | Method for improving bonding property of magnetron sputtering TiN coating on biomedical magnesium alloy surface |
| CN104451549A (en) * | 2014-11-28 | 2015-03-25 | 广东欧珀移动通信有限公司 | Metal workpiece and outer surface spray processing method of metal workpiece |
| CN104451549B (en) * | 2014-11-28 | 2018-03-13 | 广东欧珀移动通信有限公司 | The outer surface spray processes of metal works and metal works |
| CN108245714A (en) * | 2016-12-29 | 2018-07-06 | 吕传胜 | The preparation method of the magnesium alloy implant material of alternative stage degradation |
| CN111842076A (en) * | 2020-06-24 | 2020-10-30 | 肇庆宏旺金属实业有限公司 | Preparation method of champagne anti-fingerprint stainless steel |
| CN111842085A (en) * | 2020-06-24 | 2020-10-30 | 肇庆宏旺金属实业有限公司 | Preparation method of brown fingerprint-resistant stainless steel |
| CN111850487A (en) * | 2020-06-24 | 2020-10-30 | 肇庆宏旺金属实业有限公司 | Preparation method of rose gold fingerprint-resistant stainless steel |
| CN111876730A (en) * | 2020-06-24 | 2020-11-03 | 肇庆宏旺金属实业有限公司 | Preparation method of titanium-gold fingerprint-resistant stainless steel |
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| Publication number | Publication date |
|---|---|
| CN100376334C (en) | 2008-03-26 |
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