CN1229519C

CN1229519C - Honeycomb blind hole shell manufacturing method

Info

Publication number: CN1229519C
Application number: CN 02149644
Authority: CN
Inventors: 赖文德
Original assignee: Shenzhen Futaihong Precision Industry Co Ltd
Current assignee: Shenzhen Futaihong Precision Industry Co Ltd
Priority date: 2002-12-14
Filing date: 2002-12-14
Publication date: 2005-11-30
Anticipated expiration: 2022-12-14
Also published as: CN1508290A

Abstract

The present invention relates to a method for manufacturing a honeycomb-shaped blind-hole case body, which comprises the following steps that a metal base body is prepared; a protective film is coated on the surface of the base body; multiple holes are formed on the surface of the protective film based on the predetermined array of blind holes so as to expose the surface of metal; the base body is etched; an etching solution passes through the multiple holes on the surface of the protective film to etch the exposed surface of the metal. Consequently, the blind holes are formed on the surface of the base body. The film of the base body is removed, and the residual protective film on the surface of the base body is removed so as to obtain a case body with a honeycomb-shaped blind-hole structure. The method has the advantages of simple operation and low cost. The quality of the surface appearance of the honeycomb-shaped blind-hole case body is high, and the case body is brilliant and lustrous.

Description

The manufacture method of cellular blind hole housing

[technical field]

The present invention relates to form the porous method at surface of shell, finger has the manufacture method of the housing of cellular blind hole structure especially.

[background technology]

At present, the method that forms cellular blind hole structure in solid work piece surface mainly is a laser carving method, announce the 5th as United States Patent (USP), 143, the method that No. 578 patent disclosed about a series of continuous honeycomb structures of formation on the solid surface that transmits face as liquid, be to bombard above-mentioned solid surface, solid surface is carved and formed honeycomb structure by a pulse laser beam.Yet because the restriction of laser sculpture equipment and processing condition, this method is difficult to be implemented in the metallic surface and forms darker blind hole, and cost and energy consumption are higher.

[summary of the invention]

The object of the present invention is to provide a kind of manufacturing simple to operate, lower-cost to have the method for the housing of cellular blind hole structure.

For achieving the above object, the present invention makes the method for cellular blind hole housing, may further comprise the steps: prepare a metallic matrix; At this matrix surface coating protective film; Become arranging of blind hole according to pre-setting, form porous on this protective membrane surface, with the exposing metal surface; Aforementioned substrates is carried out etching, and etching solution sees through the porous on aforementioned protective membrane surface, and etching is carried out in the metallic surface that is exposed, thereby forms blind hole at this matrix surface; Aforementioned substrates is moved back film handle, remove the remaining protective membrane of matrix surface and obtain to have the housing of cellular blind hole structure.

Compared to prior art, the manufacture method of the cellular blind hole housing of the present invention, technology is simple, and this method is to form blind hole with etching, so cost is lower, and is easy to implement.In addition, housing apparent quality height that this method is made and the beautiful gloss of tool.

[description of drawings]

Fig. 1 is the synoptic diagram of an embodiment of the cellular blind hole housing of the present invention.

Fig. 2 is the process flow sheet of shop drawings 1 cellular blind hole housing.

[embodiment]

Please refer to Fig. 1, housing 1 comprises metal body 2, has cellular blind hole 3 on this body 2.

Please refer to Fig. 2, make above-mentioned housing 1 and mainly may further comprise the steps: step 60 preparation metallic matrix, step 62 coating protective film, step 64 forms porous on the protective membrane surface, and step 66 etching and step 68 are moved back film.

Wherein, the step 60 of preparation metallic matrix mainly comprises operations such as blanking, impact briquetting and aftertreatment.Earlier with metal sheet, present embodiment is meant an aluminium sheet, carry out blanking according to the profile of above-mentioned housing 1 and form several aluminum substrates, afterwards, these aluminum substrates are carried out impact briquetting in stamping machine, make each matrix identical, form three-dimensional surface and form perforate according to the use needs of housing 1 with the shape of housing 1.Housing after the impact briquetting has burr, and surface of shell is rough, so need the housing after the impact briquetting be ground, with deflashing and polishing, makes surface of shell smooth and have beautiful metalluster.This grinding can adopt vibro-grinding technology to realize, is housing to be put into oscillating mill grind, and uses ceramic grinding stone, and adds a certain amount of light agent and sanitising agent, is taking out housing behind the vibro-grinding certain hour under certain vibrational frequency.Also can select the grinding stone and the abrasive that use other Ginding process or use other kind.Behind vibro-grinding, housing is carried out aftertreatment.Aftertreatment comprises operations such as polishing, degreasing, cleaning and desmut, wherein polishing comprises mechanical polishing and chemical rightenning, and desmut is aforementioned housing to be inserted soaked in the salpeter solution 3～20 seconds, to remove the spot of surface of shell, is beneficial to the processing of next step.

Step 62 is by spraying or typography; surface of shell after step 60 handled all applies one deck protective medium, as acid-proof ink, alkaline-resisting printing ink or acid and alkali-resistance printing ink; and drying is hardened and the formation layer protecting film; this protective membrane can be resisted the corrosion of etching reagent, so the metallic matrix of its protection can etched dose of etching.

Step 64 is to form porous on the protective membrane of the surface of shell that will form blind hole, formed porous arrange be with housing 1 shown in Figure 1 on blind hole 3 arrange identical.This step can be finished by laser sculpture; promptly at first according to blind hole 3 on the housing 1 shown in Figure 1 arrange and shape is carried out computer pattern programming; housing after then step 62 being handled is delivered to the worktable of laser engraving machine; according to aforementioned computer pattern this housing is carried out laser scanning; be that protective membrane to surface of shell carries out selectivity and ablates on the laser scanning process nature; thereby form porous on protective membrane, these porous expose the aluminum substrate surface, prepare against the follow-up etching of carrying out.

Step 66 is that the aluminum substrate surface that porous exposed that the aforementioned laser engraving forms is etched with the formation blind hole.Aforementioned housing is put into the etching bath that fills etching solution soak, etching solution passes the porous of aforementioned protective membrane, and aluminum substrate is carried out selective etch, just forms cellular blind hole at surface of shell behind the etching certain hour.The etch process of aluminum enclosure can adopt alkali etching technology.This alkali etching technology is that the employing sodium hydroxide solution is an etching solution, and naoh concentration is 10～100g/L, can add other stablizer simultaneously in right amount and obtain the good housing of exterior quality to regulate etching speed, and etch temperature is 30～90 ℃.This etch process also can adopt acid etching technology, is that etching solution carries out etching as adopting hydrofluoric acid aqueous solution, hydrochloric acid, nitric acid or phosphoric acid solution.This etch process also can adopt electrochemical etching process to carry out.After this etch process is finished, the cellular blind hole structure of the corresponding formation in the aluminum substrate that porous exposed of surface of shell protective membrane surface.Afterwards housing is carried out cleaning-drying, to be for further processing.

It is to adopt existing solvent that step 68 is moved back film, as toluene, cleans aforementioned surface of shell, with the remaining protective membrane of removal surface of shell, thereby can obtain housing shown in Figure 11.

The impact briquetting operation that is appreciated that abovementioned steps 60 can be finished in other arbitrary step, and after impact briquetting housing is carried out milled processed with deflashing and polishing, and the step 60 for preparing metallic matrix like this item mainly comprises blanking and postprocessing working procedures.

Abovementioned steps 64 also can be bored a hole by mechanical means, or forms porous by other prior art on the protective membrane surface, to reach the purpose that exposes the aluminum substrate surface.

Metal shell 1 oxidation stain that obtains for preventing can as spraying acrylic varnish or polyurethane varnish, perhaps spray Color paint and form colored housing at its surface-coated layer protective layer, and can form decorative pattern at this surface of shell according to need.

For anti-oxidation also can be carried out anodizing with the housing 1 that is obtained, and carry out painted processing as required or form pattern, thereby improve the apparent quality of housing 1, make its surperficial beautiful gloss.When wherein carrying out anodizing, housing 1 should carry out pre-treatment earlier.Pre-treatment comprises operations such as polishing, degreasing, cleaning and desmut.Through after the pre-treatment above-mentioned housing 1 cleaned and drying after carry out anodizing, anodizing is to be anode with above-mentioned housing 1, with lead as negative electrode, in the sulphuric acid soln of 150～220g/L, feed direct current, carry out anodic oxidation, wherein this volts DS is 10～18V, and current density is 100.0～200.0A/m ², temperature is 10～25 ℃, can form the anode oxide film that thickness is 8～15 μ m through 30～80 minutes oxide treatment.If need form colour or pattern, then after anodizing, carry out painted processing at surface of shell.This painted treatment process can adopt dye coloring, electrolytic coloring or integral colouring technology.Wherein the technology of organic dye coloring is: will insert in the painted groove after anodised housing washing, filling concentration in the painted groove is the organic dye solution of 1～10g/L, housing soaks in organic dye solution after 5～20 minutes and takes out, the residual dye solution that the flushing surface of shell adheres to just can form colored anode oxide film at aforementioned surface of shell.Select different types of organic dye, can form different colours at surface of shell.Housing after the painted processing is put into boiling water and is carried out sealing treatment, takes out after about 30 minutes and carries out drying, and housing 1 surface just forms the anode oxide film that has predetermined color or pattern and have provide protection like this.

Aforesaid anode is handled and also can be adopted other existing anode treatment method, and sealing of hole is handled and also can be adopted other existing method to carry out sealing of hole.

Claims

1. the manufacture method of a cellular blind hole housing may further comprise the steps:

(1) preparation metallic matrix;

(2) at described metal base surface coating protective film;

(3) become arranging of blind hole according to pre-setting, form porous on described protective membrane surface, with the exposing metal surface;

(4) described matrix is carried out etching, etching solution sees through the porous on described protective membrane surface, and etching is carried out in the metallic surface that is exposed, thereby forms blind hole at this metal base surface; And

(5) described metallic matrix is moved back film and handle, remove the remaining protective membrane of this metal base surface and obtain to have the housing of cellular blind hole structure.

2. the manufacture method of cellular according to claim 1 blind hole housing, it is characterized in that: the step of this preparation metallic matrix comprises blanking and postprocessing working procedures.

3. as the manufacture method of cellular blind hole housing as described in the claim 2, it is characterized in that: the step of this preparation metallic matrix further comprises the impact briquetting operation.

4. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: should be to form porous by laser carving method on this protective membrane surface in protective membrane surface formation porous step.

5. as the manufacture method of cellular blind hole housing as described in the claim 4; it is characterized in that: this laser carving method is to carry out the programming of computer pattern according to the pattern that surface of shell will form blind hole, thereby and the housing of delivering to the laser sculpture machine worktable is carried out laser scanning according to this computer pattern described protective membrane selectivity is ablated form porous.

6. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: should be to form porous by the mechanical means perforation and on this protective membrane surface in protective membrane surface formation porous step.

7. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: this etching is to adopt alkali etching technology, acid etching technology or electrochemical etching process.

8. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: this moves back film is to adopt the remaining protective membranes of solvent cleaning.

9. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: this method further is included in moves back film and handles the back in the armor coated step of described surface of shell.

10. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: this method further is included in moves back film and handles the back at described surface of shell spraying Color paint or form the step of pattern.

11. the manufacture method of cellular according to claim 1 blind hole housing is characterized in that: this method further is included in moves back anodizing is carried out in film processing back to described housing step.

12. the manufacture method as cellular blind hole housing as described in the claim 11 is characterized in that: this method further is included in the operation of this housing being carried out painted processing after the described anodizing.