CN103266323A - Surface etching processing method for metal product with curve structure - Google Patents
Surface etching processing method for metal product with curve structure Download PDFInfo
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- CN103266323A CN103266323A CN2013101785866A CN201310178586A CN103266323A CN 103266323 A CN103266323 A CN 103266323A CN 2013101785866 A CN2013101785866 A CN 2013101785866A CN 201310178586 A CN201310178586 A CN 201310178586A CN 103266323 A CN103266323 A CN 103266323A
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Abstract
The invention discloses a surface etching processing method for a metal product with a curve structure, which is implemented by carrying out masking and shielding treatment before putting the metal product in an etching machine for etching, wherein in the masking treatment process, the mask clearance in the plane part of the metal product is uniform, and the mask clearance in the curve part of the metal product gradually increases from the joint of the plane and curve to the edge of the curve; and the masked metal product needs to be shielded before etching processing, i.e. an anti-corrosion shielding substance is adopted to shield the curve part of the metal product in the direction parallel to the metal product plane before etching processing. The method disclosed by the invention can be used for etching processing of a metal product with a curve structure, and satisfies the demands that the depth of the microstructure obtained by etching from the edge of the curve part of the metal product with a curve structure to the joint of the curve and plane gradually increases and the depth of the microstructure obtained by etching the plane part is uniform and consistent.
Description
Technical field
The present invention relates to a kind ofly in metal products surface etching method for processing, especially a kind of have the metal products surface etching method for processing of curved-surface structure.
Background technology
In metal product manufacturing field, process micron-sized array dimpling or the nick structure can increase aesthetic property, the skidproof effect of product, the effect etc. of keeping a public place clean at product surface.Compared to little processing, little Vehicle Processing, laser processing, electrospark machining and the electro-chemical machining of milling of machinery, chemical method for etching is simple because of its working method, fast forming effect good, can significantly reduce production costs, advantage such as low for equipment requirements is subjected to widespread use.
The chemical milling ratio juris is to utilize metal and etching reagent (pharmaceutical chemicals) to carry out chemical reaction to form solvable object and remove reactive moieties, wishes to be removed the purpose that processing is assigned to reach in part and protected portion by control.Usually when metals such as die steel are carried out the etching and processing of surface micro-structure, to carry out mask process to metallic material product surfaces such as die steel, namely at work metal surface-coated one deck insulation paste, the part of uncoated insulation paste is carried out chemical reaction with etching solution.The figure that this engraving method processes often exists surface opening big, the shape that internal opening is little, its section such as trapezoidal, the surface is removed between the pit of formation and the projection because seamed edge and corner angle are arranged and can not well seamlessly transits, it is bad that the consequence that causes like this is that the processing metal goods touch up feel, also influences visual effect simultaneously.And, for the metal products with curved-surface structure, the simple that this processing method processes cheats that often the degree of depth is identical, nick hole and microprotrusion appear suddenly in the result who causes like this between the plane machined surface of metal products and the unprocessed curved surface, give a kind of uncomfortable feeling of people, in addition, not attractive in appearance on visual effect yet.For this reason, curved surface by metal products is progressively deepened to the degree of depth of plane nick hole and microprotrusion, particularly increase gradually for the wet look of mobile phone grinding tool or the computer casing grinding tool top-surface camber part machined surface depth of microstructure to curved surface, just become a kind of demand up to planar section etch depth uniformity.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part and a kind of metal products surface etching working method that can be used for having curved-surface structure is provided, described method can process the microstructure that the degree of depth increases gradually at the Machining of Curved Surface face of metal products, the microstructure of the degree of depth uniformity that processes up to the planar section of metal products.
For achieving the above object, the technical scheme that the present invention takes is: a kind of be used to the metal products surface etching working method with curved-surface structure, comprise following steps:
(1) mask: on the plane of metal products and curved surface, apply the corrosion-resistant glue of a plurality of squares respectively, gap width between adjacent two the corrosion-resistant glue with the curved surface junction on the described metal products plane and metal products plane is 1/4～1/3 of the corrosion-resistant glue length of side, the edge of gap width on the described metal products curved surface between adjacent two corrosion resistants corrosion glue from the junction of metal products plane and curved surface to the metal products curved surface increases gradually, and the gap width between adjacent two the corrosion-resistant glue in described metal products curved edges place is 1/2～1/1 of the corrosion-resistant glue length of side;
(2) block: with corrosion-resistant shelter the curved surface top of metal products is blocked;
(3) first etching: the metal products after will blocking is placed on and carries out first etching in the etching machine, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.3～1.8psi, etching period 3～10min;
(4) demoulding: the metal products after the first etching is cleaned demoulding, and the corrosion-resistant shelter that will block the metal products curvature portion removes;
(5) etching again: the metal products after demoulding handled is put into and carries out etching again in the etching machine, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.1～0.8psi, etching period 2～6min;
(6) soak: the metal products after the etching is again cleaned, be put into then among the etching solution b and soak, soak time 0.5～2min;
(7) aftertreatment: the metal products after will handling through step (6) cleans, and removes the impurity on metal products surface.
Of the present invention be used to the metal products surface etching working method with curved-surface structure, earlier mask process is carried out on the metal products surface, by in the mask process process, progressively increasing the mask gap from the metal products curved surface to curved edges, process again after adopting corrosion-resistant shelter to block to the curvature portion of metal products, the Machining of Curved Surface face that is implemented in metal products processes the microstructure that increases gradually, the microstructure of the degree of depth uniformity that processes up to the planar section of metal products.Described microstructure refers to nick hole and microprotrusion.The microstructure of the metal products section after the final processing is the continuous sinusoidal curve shape of convex-concave shape, junction from the curved edges of metal products to curved surface and plane, the degree of depth of nick hole and microprotrusion increases gradually, on the plane of metal products, the degree of depth uniformity of nick hole and microprotrusion; And the width dimensions of nick hole and microprotrusion is identical on the curved surface of metal products and the plane.
Described step (1) is when mask process, mask is square, leave the mask gap between mask and the mask, mask gap length unanimity on the plane of metal products, namely the gap width between adjacent two corrosion-resistant glue is 1/4～1/3 of the corrosion-resistant glue length of side on the metal products plane; Gap width between adjacent two the corrosion-resistant glue with the curved surface junction in metal products plane also is 1/4～1/3 of the corrosion-resistant glue length of side; And on the curved surface of metal products, the mask gap from the junction on curved surface and plane to the edge of curved surface, the mask gap increases gradually, namely the mask gap, junction from curved surface and plane is 1/4～1/3 of the corrosion-resistant glue length of side, and increasing to mask gap, curved edges place is 1/2～1/1 of the corrosion-resistant glue length of side.
It can be various materials or instrument that described step (2) is blocked used corrosion-resistant shelter, for example the material that do not react with etching solution such as plastic plate.Before processing, the curved surface top of metal products is blocked with the metal products plane parallel or with plane direction at an angle with corrosion-resistant shelter edge earlier, when etching and processing, etching solution directly sprays the planar section of metal products, because the curved surface of metal products top is blocked, etching solution can not directly spray the curved surface of metal products, the processing of curvature portion relies on spray to be splashed on the curved surface or spray does not have enough time to get rid of and overflows to the etching and processing that realizes on the curved surface curvature portion to the etching solution on the plane to the etching solution of planar section, so just can so that the etch depth of curvature portion less than planar section, and more past curved edges part, etch depth is more little.The purpose that the curvature portion of metal products is blocked is in order to add man-hour, to stop etching solution directly to spray to curved surface, causes on the curved surface etch depth greater than planar section.
Described step (3) to (6) is to mask and the process of processing of the metal products after blocking, add man-hour, earlier to mask and the metal products after blocking carry out first etching, basically form section at the plane of metal products and curved surface and be trapezoidal convex-concave figure, then to the metal products demoulding after the first etching, and carry out etching again, remove the seamed edge and the corner angle that form on the metal products surface after the first etching, at last metal products seminal fluid in etching solution is soaked, carry out further correction of the flank shape, finally process on the curved surface of metal products and plane and have the effect of seamlessly transitting, section is the conical array microstructure of convex-concave shape.And since step (1) and step (2) to the mask of metal products and block processing, metal products surface after the feasible processing, the conical microstructure uniformity of the convex-concave shape that planar section forms, from the junction of plane and curved surface to the edge of curved surface, the degree of depth of the conical microstructure of the convex-concave shape that forms on the curved surface shoals gradually, and the width of the convex-concave shape taper shape microstructure that forms on plane and the curved surface is all identical.The method of the invention can be used in the metal products with curved-surface structure, can satisfy edge that existing electronic product etc. has a curvature portion to the junction etching gained depth of microstructure on curved surface and plane increase gradually, up to the demand of planar section etching gained depth of microstructure uniformity.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the thickness of corrosion-resistant glue is 10～40 μ m in the described step (1).The corrosion-resistant glue that adopts in the described step (1) generally is square structure; the thickness of corrosion-resistant glue is about 10～40 μ m; leave the gap of uncoated corrosion-resistant glue between the corrosion-resistant glue of square and the square corrosion-resistant glue; when the chemical milling reaction takes place; the part that is coated with corrosion-resistant glue is protected, and uncoated have the part of corrosion-resistant glue to produce chemical reaction and be removed formation nick hole.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the top of metal products curvature portion is pasted or be buckled in to corrosion-resistant shelter in the described step (2).The top of metal products curvature portion is pasted or be buckled in to described corrosion-resistant shelter, can make things convenient for taking off of corrosion-resistant shelter like this.Between described corrosion-resistant shelter and the curved surface certain space to be arranged, to make things convenient for etching solution to be splashed to curved surface or to overflow on the curved surface.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the pressure of the etching solution a that sprays from the etching machine nozzle in the described step (3) is 0.6～1.2psi, etching period 4～8min.Usually, etching solution sprays from the nozzle of etching machine, and the shape of the etching solution of described ejection is preferably fan-shaped, can evenly spray, and etching part is the gap of leaving uncoated corrosion-resistant glue between square corrosion-resistant glue and the square corrosion-resistant glue.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, metal products surface etching width is before the etching not 1.5～2 times of the mask width after the first etching of described step (3).After the metal products behind the mask sprays etching solution; etching solution carries out etching to the gap portion between the mask on the metal products; because the effect of lateral erosion; etching solution is carrying out the etched while to the gap between the mask; metal products to the mask covering part also carries out certain etching; make the etched width on metal products surface increase and be before the etching not 1.5～2 times of the mask width; and because the mask covering part has the metal products of certain width also etched; therefore compare before the metal products width of mask below and the etching and dwindle; final making through after the first etching, etched part and the width of protected part present the ratio of 2:3～1:1.The present application people is by groping discovery, before metal products surface etching width is etching after the first etching of described step (3) not 1.5～2 times of the mask width time, final gained metal products surface forms has smooth excessiveness effect, section to be the homogeneity of the conical array microstructure of convex-concave shape better.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the metal products after described step (4) adopts basic solution to first etching carries out demoulding to be handled.As the more preferably embodiment be used to the metal products surface etching working method with curved-surface structure of the present invention, described basic solution is NaOH solution.Described demoulding is exactly that the metal products that will be coated with corrosion-resistant glue is placed on as in the basic solutions such as NaOH, and corrosion-resistant glue is removed from the metal products surface.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the pressure of the etching solution a that sprays from the etching machine nozzle in the described step (5) is 0.3～0.6psi, etching period 2～4min.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the etching solution a in described step (3) and (5) contains FeCl
3, water and NaCl, wherein FeCl
3, water and NaCl mass ratio be 5～35:35:1.
As the preferred implementation be used to the metal products surface etching working method with curved-surface structure of the present invention, the etching solution b in the described step (6) contains HNO
3, FeCl
3, water and NaCl, wherein HNO
3, FeCl
3, water and NaCl mass ratio be 5～35:5～35:35:1.Etching solution b in the step (6) must contain HNO
3, and HNO
3With the weight ratio of water be 1:9～9:1, be preferably 1:4～3:7; More preferably, described etching solution b contains HNO
3, FeCl
3, water and NaCl, and HNO wherein
3, FeCl
3, water and NaCl mass ratio be 5～35:5～35:35:1.It is on the basis of etching solution main component that described etching solution b adopts iron trichloride in tradition, has added sodium-chlor, has increased Cl in the solution
-1Concentration, institute's etching metal composition intermediate ion state is easily transformed the generation soluble salt in conjunction with the nickel that generates material hard to tolerate, silicon plasma, strengthened the ablation ability of etching solution to metal, increased speed of reaction, be convenient to form certain side etching quantity, the nitric acid that contains in the etching solution has certain oxidation capacity simultaneously, can remove the furvous iron oxide composition that the metal products surface generates because of oxidizing reaction, remove zone of oxidation, played polishing action, increased the smooth finish on metal products surface.
Metal products described in the present invention is metallic material products such as stainless steel, die steel.
Of the present invention be used to the metal products surface etching working method with curved surface, at the metal products with curved surface, advanced line mask and block processing before processing, block the curved surface of metal products with corrosion-resistant shelter, because curved surface has shelter, so when etching and processing, etching solution sprays on the plane, can not directly spray on the curved surface.Spray can be splashed on the curved surface because pressure is very big to the etching solution on plane, and the while can not in time be got rid of and overflows on the curved surface owing to the etching solution on the plane.Because the etching solution on plane spray pressure is bigger, the pressure that the etching solution on the curved surface washes away is little, so planar etch depth ratio curved surface etch depth is big.Because the side etching quantity that the spray etching pressure causes greatly is big, so the mask gap is along with processing becomes big, lateral erosion on the curved surface is also being carried out, but the side etching quantity on the curved surface is less than the plane, so just cause the etched width difference, in order to solve the different problem of etched width, so the inventive method is when mask process, the mask gap of curved surface is done greatly gradually, though the plane lateral erosion is bigger like this, but initial mask gap is less on the plane, just can accomplish planar etch width and curved surface width uniformity so machine the back.For curved surface, though the increase in mask gap can increase etch depth, because be subjected to blocking of shelter on the curved surface, etching solution is fewer with the amount of contact of curved surface, so etching reaction is insufficient, so just the curved surface etch depth can not appear greater than the situation of the planar etch degree of depth.
The method of the invention can go out to have the effect of seamlessly transitting in the metal products surface working, section is the conical array microstructure of convex-concave shape, and the metal products surface after the processing, the microstructure shape size uniformity of planar section, its microstructure has the effect of seamlessly transitting, section such as conical nick and micro-convex structure, depth of microstructure from the curved surface to the plane is more and more darker, except depth of microstructure, curved surface is consistent with other size and dimensions of microstructure on the plane.See that on the whole the metal products surface micro-structure after the processing presents the microstructure of progressively being deepened to curved surface by curved edges, arrive the microstructure shape of the plane consistence degree of depth again.The method of the invention can satisfy the metal products curved surface to the plane microstructure progressively deepen, the demand of microstructure uniformity to the plane, make that the metal products after the processing is not only more attractive in appearance, for people's vision is brought rich and diversity, and has skidproof effect.
Description of drawings
Fig. 1 is to the perspective view behind the metal products mask in the working method of the present invention.
Fig. 2 is shown in Figure 1 to the section structure synoptic diagram behind the metal products mask.
Fig. 3 is the structural representation after metal products being blocked in the working method of the present invention.
Fig. 4 is for adopting the metal products perspective view after the method for the invention is processed.
Fig. 5 is the section structure synoptic diagram of the metal products after the processing shown in Figure 4.
Wherein, 10 is that metal products, 12 is that plane, 14 is that curved surface, 20 is that corrosion-resistant glue, 30 is shelter.
Embodiment
For the purpose, technical solutions and advantages of the present invention better are described, the invention will be further described below in conjunction with the drawings and specific embodiments.
The present invention is a kind of be used to the metal products surface etching working method with curved-surface structure, said method comprising the steps of:
(1) mask: on the plane of metal products and curved surface, apply the corrosion-resistant glue of a plurality of squares respectively, gap width between adjacent two the corrosion-resistant glue with the curved surface junction on the described metal products plane and metal products plane is 1/4～1/3 of the corrosion-resistant glue length of side, the edge of gap width on the described metal products curved surface between adjacent two corrosion resistants corrosion glue from the junction of metal products plane and curved surface to the metal products curved surface increases gradually, and the gap width between adjacent two the corrosion-resistant glue in described metal products curved edges place is 1/2～1/1 of the corrosion-resistant glue length of side;
(2) block: with corrosion-resistant shelter the curved surface top of metal products is blocked;
(3) first etching: the metal products after will blocking is placed on and carries out first etching in the etching machine, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.3～1.8psi, etching period 3～10min;
(4) demoulding: the metal products after the first etching is cleaned demoulding, and the corrosion-resistant shelter that will block the metal products curvature portion removes;
(5) etching again: the metal products after demoulding handled is put into and carries out etching again in the etching machine, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.1～0.8psi, etching period 2～6min;
(6) soak: the metal products after the etching is again cleaned, be put into then among the etching solution b and soak, soak time 0.5～2min;
(7) aftertreatment: the metal products after will handling through step (6) cleans, and removes the impurity on metal products surface.
The method of the invention, at first step (1) is carried out mask process on the surface of metal products, namely applies the corrosion-resistant glue 20 of a plurality of squares respectively on the plane 12 of metal products and curved surface 14.Shown in attached Fig. 1 and 2, the mask gap is not identical during to the mask process on metal products curved surface 14 and plane 12, mask gap uniformity on metal products plane 12, and from the metal products plane 12 with the edge to curved surface 14, the junction of curved surface 14, the mask gap increases gradually.Particularly, gap width between adjacent two the corrosion-resistant glue 20 with curved surface 14 junctions on the described metal products plane 12 and metal products plane 12 is 1/4～1/3 of the corrosion-resistant glue length of side, gap width on the described metal products curved surface 14 between adjacent two corrosion resistants corrosion glue 20 12 increases with the edge to metal products curved surface 14, the junction of curved surface 14 gradually from the metal products plane, and the gap width between adjacent two the corrosion-resistant glue 20 of described metal products curved surface 14 edges is 1/2～1/1 of corrosion-resistant glue 20 length of sides.The reason of carrying out mask process like this is, when the spray etching, because the curved surface 14 usefulness shelters of metal products 10 block, therefore the side etching quantity on the curved surface 14 is less, and the side etching quantity on the plane 12 is bigger, for making the nick that forms on metal products 10 surfaces after the etching identical with the micro-convex structure width, therefore the mask gap with curved surface 14 progressively increases.Like this, though the lateral erosion on plane 12 is bigger, but initial mask gap is little, the lateral erosion of curved surface 14 is smaller, initial mask gap is big, final contriver finds through groping, and when the mask gap on metal products plane 12 and the curved surface 14 arranges as mentioned above, machines the consistent homogeneity that plane 12 etched width and curved surface 14 etched width just can be accomplished in the back.The thickness of square corrosion-resistant glue 20 is generally about 10～40 μ m in the described step (1); leave the gap of uncoated corrosion-resistant glue between the corrosion-resistant glue 20 of square and the square corrosion-resistant glue 20; when the chemical milling reaction takes place; the part that is coated with corrosion-resistant glue 20 is protected, and uncoated have the part of corrosion-resistant glue 20 to produce chemical reaction and be removed formation nick hole.
Described step (2) before processing earlier with corrosion-resistant shelter 30 edges and metal products plane 12 parallel or with the curved surface 14 of plane 12 direction at an angle with metal products above block, as shown in Figure 3.Described shelter 30 can be with multiple material or instrument, for example the material that do not react with etching solution such as plastic plate.The reason that shelters from curved surface 14 with corrosion-resistant shelter 30 is because curved surface 14 has had blocking of shelter 30, and etching solution directly sprays plane 12 parts of metal products 10, and can not directly spray on the curved surface 14.12 etching solution can be splashed on the curved surface 14 because pressure is very big spray to the plane, simultaneously because the etching solution on the plane 12 can not in time be got rid of and overflow on the curved surface 14, the processing of curved surface 14 parts is exactly that dependence is splashed or the etching solution that overflows to curved surface 14 parts carries out etching and processing.Because the etching solution on plane 12 spray pressure is bigger, and the pressure that the etching solution on the curved surface 14 washes away is little, therefore the etch depth of plane 12 parts is bigger than curved surface 14 etch depths, the etch depth uniformity of plane 12 parts, and the more past curved surface 14 edge section etch depths of curved surface 14 parts are more little.The top of metal products curved surface 14 parts is pasted or be buckled in to corrosion-resistant shelter 30 in the described step (2), as shown in Figure 3, can make things convenient for taking off of corrosion-resistant shelter 30 like this.Between described corrosion-resistant shelter 30 and the curved surface 14 certain space to be arranged, to make things convenient for etching solution to be splashed to curved surface 14 or to overflow on the curved surface 14.
Described step (3) is that first etching is carried out on the metal products surface to mask and after blocking, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.3～1.8psi, etching period 3～10min.Preferably, the pressure of the etching solution a that sprays from the etching machine nozzle is 0.6～1.2psi, etching period 4～8min.Usually, etching solution sprays from the nozzle of etching machine, and the shape of the etching solution of described ejection is preferably fan-shaped, can evenly spray, and etching part is the gap of leaving uncoated corrosion-resistant glue between square corrosion-resistant glue and the square corrosion-resistant glue.Preferably, metal products surface etching width is before the etching not 1.5～2 times of the mask width after the first etching.After the metal products behind the mask sprays etching solution; etching solution carries out etching to the gap portion between the mask on the metal products; because the effect of lateral erosion; etching solution is carrying out the etched while to the gap between the mask; metal products to the mask covering part also carries out certain etching; make the etched width on metal products surface increase and be before the etching not 1.5～2 times of the mask width; and because the mask covering part has the metal products of certain width also etched; therefore compare before the metal products width of mask below and the etching and dwindle; final making through after the first etching, etched part and the width of protected part present the ratio of 2:3～1:1.The present application people is by groping discovery, before metal products surface etching width is etching after the first etching of described step (3) not 1.5～2 times of the mask width time, final gained metal products surface forms has smooth excessiveness effect, section to be the homogeneity of the conical array microstructure of convex-concave shape better.Through after the first etching and processing of this step, can basically form section at the plane of metal products and curved surface and be trapezoidal convex-concave figure.
Demoulding in the described step (4) is exactly that the metal products that will be coated with corrosion-resistant glue is placed on as in the basic solutions such as NaOH, and corrosion-resistant glue is removed from the metal products surface.
The pressure of the etching solution a that described step (5) sprays from the etching machine nozzle during etching again is 0.1～0.8psi, etching period 2～6min; Preferably, the pressure of the etching solution a that sprays from the etching machine nozzle is 0.3～0.6psi, etching period 2～4min.Described etching process again is to remove section that first etching forms to be seamed edge and corner angle in the trapezoidal convex-concave figure.
The used etching solution of the first etching in described step (3) and (5) and etching again is identical, and namely described etching solution a contains FeCl
3, water and NaCl, wherein FeCl
3, water and NaCl mass ratio be 5～35:35:1.
It is the metal products after the etching again to be put among the etching solution b soak that the quiet liquid of described step (6) soaks, soak time 0.5～2min, this step is that further correction of the flank shape is carried out on the metal products surface after the etching again, finally process on the curved surface of metal products and plane have the effect of seamlessly transitting, section is the conical array microstructure of convex-concave shape.Preferably, the used etching solution of this step is different from the etching solution in step (3) and (5), and namely etching solution b contains HNO
3, FeCl
3, water and NaCl, wherein HNO
3, FeCl
3, water and NaCl mass ratio be 5～35:5～35:35:1.Etching solution b in the step (6) must contain HNO
3, and HNO
3With the weight ratio of water be 1:9～9:1, be preferably 1:4～3:7; More preferably, described etching solution b contains HNO
3, FeCl
3, water and NaCl, and HNO wherein
3, FeCl
3, water and NaCl mass ratio be 5～35:5～35:35:1.It is on the basis of etching solution main component that described etching solution b adopts iron trichloride in tradition, has added sodium-chlor, has increased Cl in the solution
-1Concentration, institute's etching metal composition intermediate ion state is easily transformed the generation soluble salt in conjunction with the nickel that generates material hard to tolerate, silicon plasma, strengthened the ablation ability of etching solution to metal, increased speed of reaction, be convenient to form certain side etching quantity, the nitric acid that contains in the etching solution has certain oxidation capacity simultaneously, can remove the furvous iron oxide composition that the metal products surface generates because of oxidizing reaction, remove zone of oxidation, played polishing action, increased the smooth finish on metal products surface.
Described step (7) is to the metal products aftertreatment after the etching and processing, is specially the impurity that clean-out system is removed the metal products surface.
Metal products surface tissue after the employing foregoing invention etching and processing is shown in attached Figure 4 and 5, can be found out by attached Figure 4 and 5, metal products 10 surfaces after the processing, the conical microstructure uniformity of the convex-concave shape that plane 12 parts form, from the plane 12 with the junction of curved surface 14 edge to curved surface 14, the degree of depth of the conical microstructure of the convex-concave shape that forms on the curved surface 14 shoals gradually, and the width of the convex-concave shape taper shape microstructure that forms on plane 12 and the curved surface 14 is all identical.Hence one can see that, adopt the method for the invention to can be used in the metal products with curved-surface structure, satisfy metal products with curved-surface structure junction etching gained depth of microstructure from the edge of curvature portion to curved surface and plane increase gradually, up to the demand of planar section etching gained depth of microstructure uniformity.
Last institute should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although with reference to preferred embodiment the present invention has been done detailed description; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.
Claims (10)
1. one kind is used for having the metal products surface etching working method of curved-surface structure, it is characterized in that, comprises following steps:
(1) mask: on the plane of metal products and curved surface, apply the corrosion-resistant glue of a plurality of squares respectively, gap width between adjacent two the corrosion-resistant glue with the curved surface junction on the described metal products plane and metal products plane is 1/4～1/3 of the corrosion-resistant glue length of side, the edge of gap width on the described metal products curved surface between adjacent two corrosion resistants corrosion glue from the junction of metal products plane and curved surface to the metal products curved surface increases gradually, and the gap width between adjacent two the corrosion-resistant glue in described metal products curved edges place is 1/2～1/1 of the corrosion-resistant glue length of side;
(2) block: with corrosion-resistant shelter the curved surface top of metal products is blocked;
(3) first etching: the metal products after will blocking is placed on and carries out first etching in the etching machine, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.3～1.8psi, etching period 3～10min;
(4) demoulding: the metal products after the first etching is cleaned demoulding, and the corrosion-resistant shelter that will block the metal products curvature portion removes;
(5) etching again: the metal products after demoulding handled is put into and carries out etching again in the etching machine, and the pressure of the etching solution a that sprays from the etching machine nozzle is 0.1～0.8psi, etching period 2～6min;
(6) soak: the metal products after the etching is again cleaned, be put into then among the etching solution b and soak, soak time 0.5～2min;
(7) aftertreatment: the metal products after will handling through step (6) cleans, and removes the impurity on metal products surface.
2. as claimed in claim 1ly it is characterized in that be used to the metal products surface etching working method with curved-surface structure the thickness of corrosion-resistant glue is 10～40 μ m in the described step (1).
3. engraving method as claimed in claim 1 is characterized in that, the top of metal products curvature portion is pasted or be buckled in to corrosion-resistant shelter in the described step (2).
4. as claimed in claim 1ly it is characterized in that be used to the metal products surface etching working method with curved-surface structure the pressure of the etching solution a that sprays in the described step (3) is 0.6～1.2psi, etching period 4～8min from the etching machine nozzle.
5. describedly it is characterized in that be used to the metal products surface etching working method with curved-surface structure as claim 1 or 4 that metal products surface etching width is before the etching not 1.5～2 times of the mask width after the first etching of described step (3).
6. as claimed in claim 1ly it is characterized in that be used to the metal products surface etching working method with curved-surface structure that the metal products after described step (4) adopts basic solution to first etching carries out demoulding to be handled.
7. as claimed in claim 6ly it is characterized in that be used to the metal products surface etching working method with curved-surface structure described basic solution is NaOH solution.
8. engraving method as claimed in claim 1 is characterized in that, the pressure of the etching solution a that sprays from the etching machine nozzle in the described step (5) is 0.3～0.6psi, etching period 2～4min.
9. engraving method as claimed in claim 1 is characterized in that, the etching solution a in described step (3) and (5) contains FeCl
3, water and NaCl, wherein FeCl
3, water and NaCl mass ratio be 5～35:35:1.
10. engraving method as claimed in claim 1 is characterized in that, the etching solution b in the described step (6) contains HNO
3, FeCl
3, water and NaCl, wherein HNO
3, FeCl
3, water and NaCl mass ratio be 5～35:5～35:35:1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109806728A (en) * | 2018-12-26 | 2019-05-28 | 上海谷奇核孔膜科技股份有限公司 | Prepare the device and method of nucleopore membranes |
| CN111632805A (en) * | 2020-04-30 | 2020-09-08 | 模德模具(东莞)有限公司 | Texture depth gradual change process |
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|---|---|---|---|---|
| US3186884A (en) * | 1960-05-02 | 1965-06-01 | Philips Corp | Method of manufacturing grid plates |
| EP0787558A1 (en) * | 1995-08-24 | 1997-08-06 | Kabushiki Kaisha Toshiba | Method of manufacturing reflector |
| CN1224774A (en) * | 1999-01-19 | 1999-08-04 | 刘勤宇 | Hollowing technology of stereo metal etching protecting formwork |
| CN101458450A (en) * | 2007-12-14 | 2009-06-17 | 联想(北京)有限公司 | Method for making metallic surface pattern |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3186884A (en) * | 1960-05-02 | 1965-06-01 | Philips Corp | Method of manufacturing grid plates |
| EP0787558A1 (en) * | 1995-08-24 | 1997-08-06 | Kabushiki Kaisha Toshiba | Method of manufacturing reflector |
| CN1224774A (en) * | 1999-01-19 | 1999-08-04 | 刘勤宇 | Hollowing technology of stereo metal etching protecting formwork |
| CN101458450A (en) * | 2007-12-14 | 2009-06-17 | 联想(北京)有限公司 | Method for making metallic surface pattern |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109806728A (en) * | 2018-12-26 | 2019-05-28 | 上海谷奇核孔膜科技股份有限公司 | Prepare the device and method of nucleopore membranes |
| CN111632805A (en) * | 2020-04-30 | 2020-09-08 | 模德模具(东莞)有限公司 | Texture depth gradual change process |
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| CN103266323B (en) | 2015-08-12 |
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