CN101683722B - Method for polishing laser cut metal stencil - Google Patents
Method for polishing laser cut metal stencil Download PDFInfo
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- CN101683722B CN101683722B CN2008102163703A CN200810216370A CN101683722B CN 101683722 B CN101683722 B CN 101683722B CN 2008102163703 A CN2008102163703 A CN 2008102163703A CN 200810216370 A CN200810216370 A CN 200810216370A CN 101683722 B CN101683722 B CN 101683722B
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- cut metal
- laser cut
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- stencil
- forming panel
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Abstract
The invention relates to a method for polishing laser cut metal stencil, including the following steps: one, surface polishing; two, surface oil removing; three, surface drying. As chemical polishing is thoroughly avoided, no pollution to the environment is produced, energy consumption is reduced, and no harm is produced to operation staff; the surface of the metal stencil is polished, burr on the hole wall is removed, surface skin of metal is improved, roughness of metal surface and hole wall is reduced, surface hardness is improved, and influence on material thickness and hole size is little, thus being more beneficial for demoulding of stencil and multiple printing application of stencil and prolonging the service life of metal stencil. The invention is simple in manufacturing process and strong in practicability and greatly saves production cost for user.
Description
Technical field
The invention belongs to the surface finish treatment technology of metal after, particularly the finishing method of laser cut metal stencil by cut.
Background technology
Along with high-tech high speed development, the very big application that laser cutting technique obtains in all trades and professions.Original silk screen plate mode of printing precision is low in the SMT electronic product industry; Molding effect is relatively poor; And shortcoming such as be not durable; In order to satisfy semiconductor and electronic product requirements at the higher level, extensively adopted the sheet metal hollowed printing template of cut, be used for the mould printing of surface mounting technology.The cut template is the small light beam that sends through high-power laser equipment; Form focus after the line focus; Focus produces high temperature to the metal form local melting;, drive metal form by motion again and make orbiting motion its timely cooling through continuous light beam and compressed air, just formed the mesh template.Its advantage is that template opening becomes geometry trapezoidal, is used in tin cream and rolls and the demoulding, and product opening precision is high, and the opening flexibility is bigger but also durable in use etc.Its shortcoming is that the metallic plate after the cut is because a little irregular slags of the following adhesion of billet necking after the hot melt cutting (are called for short the steel billet burr; Also be burr); Also have laser local meeting when the cutting metal template to produce high temperature; And to could guarantee cutting accuracy to its cooling in time; And in metal form when cooling, can produce oxidation with compressed air and on the metal surface the very thin black oxide coating (also making oxidation burn) of formation one deck, these all can make template be unfavorable for printing the demoulding or printing effect difference etc. at printing process.
The manufacture that at present also has several kinds of cut metal stencil: chemical etching template, cut template, electrotyping forming template.
The chemical etching template is with after drawing good graph exposure, development; Through chemical etching, the demoulding; Form needed printed pattern; Its shortcoming is that technology is comparatively complicated and also have the chemical technology composition, and human body and environment are had harm etc. because of the cutting opening is that the right angle is unfavorable for the demoulding, cutting opening low precision, poor surface smoothness, jagged.
The electrotyping forming template is to adopt nickel ion in the control area, constantly in layer to deposit and the template that is shaped, and its shortcoming is the Production Time speciality, and homogeneity of product is poor, rough surface, jagged, and cost price is high.
Use laser cut metal stencil, because it occupies stronger advantage, template opening becomes geometry trapezoidal, is used in the tin cream rolling and the demoulding, simple to operate, advantages such as flexibility is big, machining accuracy is high, environmental protection, uses more and more widely now.Be unfavorable for that with problems such as the corner, aperture are jagged the demoulding or printing precision are poor but surface that this preparation method forms and Hole Wall Roughness are low.If do not solve this type of problem, in printing process, can cause the bad or product rejection rate of product high.
The method that solves at present surface quality problems at home has four kinds:
1 chemical polishing: chemical polishing is through chemical addition agent control chemical reaction, makes the dissolution velocity of the dissolution velocity of metal surface microcosmic jut greater than microcosmic calixconcavity place, thereby makes surface finish.Its shortcoming is to contain phosphoric acid, nitric acid, hydrochloric acid etc. in the polishing fluid; Human body and environment are had great injury, also have its process is to obtain surface smoothness with the method that subtracts material, and precision is relatively poor, the ratio of temperature and solution is difficult to control and makes consistency of product poor.
2 electrochemical polish: electrochemical polish is to be anode with polished workpiece, and insoluble petal is a negative electrode, and two electrodes immerse in the electrochemical polish groove simultaneously, produce anodic solution selectively through direct current, and the anode surface brightness increases.Its shortcoming is in polishing fluid, also to contain phosphoric acid, sulfuric acid, chromic anhydride, glycerine etc.; Human body and environment are had great injury, also have its process also is to obtain surface smoothness with the method that subtracts material, and precision is relatively poor, the ratio of temperature and solution is difficult to control and makes consistency of product poor.
3 chemistry+chemical electropolishing: its shortcoming of chemistry+chemical electropolishing is identical with electrochemical polish.
4 surperficial brush platings: surperficial brush plating be with the dissolving metal that needs brush plating in solution; Again metal form is immersed in the chemical solution; Press shaping mould piece area loading current; Make the metal form surface be adsorbed one deck thin metal film, cover on the metal form coarse surface with this layer metal film and make it reach the surface and opening is smooth.Its shortcoming is to contain the chemical solution composition in the liquid; Human body and environment are had harm, also have its process is to add the method acquisition surface smoothness that material covers; So metal form thickness and opening size precision all change, adhesion is bad, coating easy separation etc.
Therefore, it is poor that above method all has template surface fineness difference and accuracy big to the injury of human body and environment, that obtain.
Summary of the invention
The present invention provides a kind of finishing method of laser cut metal stencil,, the template surface fineness difference of acquisition big to the injury of human body and environment with the finishing method that solves existing laser cut metal stencil and the technical problem of accuracy difference.
In order to solve above technical problem, the technical scheme that the present invention takes is:
A kind of finishing method of laser cut metal stencil is characterized in that, may further comprise the steps: one, surface finish; Two, surface degreasing; Three, skin drying.
Said step 1 may further comprise the steps: (one), forming panel is put in the sand-blasting machine; (2), the even sandblast in two sides 10～20 minutes successively, polish its surface and remove burr and surface oxidation casting skin on the hollow out wall.
Said step 2 may further comprise the steps: (one), forming panel is immersed in except that in the oil solution; (2), on forming panel surface and hollow out wall, clean positive and negative with soft brush and cotton; (3), forming panel is washed with pure running water.
Said step 2 may further comprise the steps: (one), forming panel is fixed; (2), evenly blow successively with compressed-air actuated air-flow and penetrate the moisture content of taking away on its surface and the hollow out wall.
Said step (two) is to be medium with mill liquid, is power with mill liquid pump and compressed air, mill liquid is quickened in the nozzle of sand-blasting machine after ejaculation, the mill liquid of high-speed motion is ejected into polished surface on the forming panel, wherein,
Mill liquid is the mixture of abrasive material and industrial running water, and its proportion is 1:3～1:7, and abrasive material is bead or brown corundum or white fused alumina;
Said nozzle is that jetting height is 40～60mm from the template surface distance of being sprayed;
Said nozzle is that spray angle is 70 °～90 ° with the angle of the template surface that is sprayed;
Said compressed air is expulsion pressure from the dynamics of nozzle ejection, and air pressure is at 0.10～0.2Mpa;
Described injection is that staged is sprayed.
Be that to remove oil solution be in industrial running water, to add cleanser in the said step (), its proportion is 0.2%～0.3%, and the said temperature of removing oil solution is 30～40 ℃, and the time that said step (two) is carried out is 5～8 minutes.
Compressed-air actuated air pressure in the said step (two) is 0.10～0.2Mpa, and blowing the time of penetrating is obverse and reverse each 3～7 minutes.
Injecting time in the said step (two) is different with the size of cut metal stencil, and environment temperature is-5～+ 40 ℃, and relative humidity is not more than 85%.
To the forming panel of normal sized, evenly the positive time of staged sandblast cutting is 3～7 minutes successively, and the cutting reverse side time is 7～13 minutes.
After having adopted technique scheme, owing to removed chemical technology fully, therefore significantly reduced pollutant, reduced injury to human body and environment.Because what adopt is that physical surface polishes and reasonably select the mill liquid of polishing, the time of polishing etc.; Do not influence its opening precision after the polishing; Surface smoothness and case hardness have been improved; And removed burr and surface oxidation casting skin, and do not destroy tapered opening, more help tin cream and roll and the smooth demoulding of tin cream; Also simplify processing step, the finishing method that solves existing laser cut metal stencil is big to the injury of human body and environment, the template surface fineness difference of acquisition and the technical problem of accuracy difference.
The specific embodiment
A kind of cut metal stencil polishing new technology and manufacturing approach have following processing step to accomplish successively:
1, laser cut metal sheet
On laser cutting device, with the CAD graphic file that is designed, be transformed into code file by device-specific software, by rotating with code file control motor, motor rotating band moving platen (motor bindiny mechanism, template is installed in the mechanism) is made orbiting motion again.The CAD graphics track of 1:1 moves in proportion, goes out the hollow out metallic plate with laser beam cutting processing on metallic plate and also is printing stencil;
2, template surface polishing
Surface finish and hole wall deburring are the industrial wet abrasive blasting machines with a kind of maturation; This machine be with the mill liquid be medium; With mill liquid pump and compressed air is power, makes mill liquid in nozzle, quicken ejaculation afterwards, and the mill liquid of high-speed motion is ejected into the equipment that template surface reaches the ash propel polish purpose.This equipment is to be added with water in the abrasive material, when spraying, does not have floating dust, and is the hermetic type structural design, and operation in inner chamber more can not jeopardize health of operators and to the influence of environment.
The composition and the content thereof of mill liquid are: mill liquid is meant the mixture of abrasive material and industrial running water, and its proportion is 1:3～1:7, and promptly the abrasive material of 1 part of drying is joined 5 parts of industrial running water.
Abrasive material: abrasive material is with bead or brown corundum, white fused alumina or the like, and its specification is 280#～320#;
Jetting height refers to that nozzle leaves the template surface distance of being sprayed, and is generally 40～60mm;
Spray angle refers to the angle of the template surface that nozzle and quilt are sprayed, and is generally 70 °～90 °;
The expulsion pressure finger pressure contracts air from the dynamics of nozzle ejection, and air pressure is about 0.10～0.2Mpa;
Injecting time: the wide 600mm of the long 600mm of the thick 0.15mm of the template of normal sized, evenly positive 3～7 minutes time, 7～13 minutes reverse side time of cutting are cut in the staged sandblast successively;
Environmental requirement: environment temperature is-5～+ 40 ℃, and relative humidity is to be not more than under 85% the environmental condition; Can adopt following optimal way to carry out in the present embodiment: environment temperature is at 25 ℃, and relative humidity is being not more than under 85% the environmental condition, gets 320# bead 10Kg and industrial running water 50Kg puts in the wet abrasive blasting machine; Adjusting expulsion pressure is 0.15Mpa; Nozzle ejection height 55mm, 90 ° of spray angles, the thick 0.15mm of template be evenly staged sandblast successively; Positive 5 minutes of injecting time cutting, cutting reverse side 10 minutes;
3, template surface oil removing
Surface degreasing is to add cleanser in industrial running water, and its proportion is 0.2%～0.3%, and water temperature is heated to 30～40 ℃, cleans about 5～8 minutes with soft brush and cotton);
Can adopt following optimal way to carry out in the present embodiment: template to be immersed in the tank that is added with cleanser 0.25Kg and industrial running water 50Kg; Water is heated the back to 35 ℃; Went up the scouring positive and negative each 3 minutes with soft brush and cotton at template surface and hollow out wall (hole wall), again template is washed with pure running water;
4, template surface oven dry
Skin drying is to use compressed air, its template surface is carried out air-flow spray, and air pressure is at 0.10～0.2Mpa, and obverse and reverse is evenly staged injection successively, and injecting time respectively is 3～7 minutes.Can adopt following optimal way to carry out in this instance: the template clamping is fixed or is placed on the flat platform; Hand-held compressed air air gun; Air pressure is at 0.15Mpa; The air-flow injection is carried out on the high 50mm alignment template of air gun mouth surface, and obverse and reverse is evenly staged injection successively, and injecting time respectively is 5 minutes.
In addition, also can adopt the dry blasting method among the present invention.
The present invention is through overtesting and produce proof; Wet (or doing) ash propel polish cut metal stencil has been stopped the existence of chemical mode fully in manufacture process, reduced personnel and environmental pollution, has also simplified processing step; Practiced thrift production cost; Also can not influence the original precision of its hollow out wall (hole wall) in the manufacture process, remove burr and the surface oxidation casting skin on the hole wall fully, surface and Hole Wall Roughness thereof are reduced to 0.002 millimeter; Case hardness improves too and reaches Vickers hardness more than 420, more helps more times printing applications of the printing stencil demoulding and printing stencil.Manufacturing approach of the present invention is simple, practical strong, has remedied the deficiency that chemical polishing, electrochemical polish, chemical polishing+electrochemical polish, surperficial brush plating are polished.
Claims (7)
1. the finishing method of a laser cut metal stencil is characterized in that, may further comprise the steps: one, surface finish; Two, surface degreasing; Three, skin drying; Said step 1 may further comprise the steps: (one), forming panel is put in the sand-blasting machine; (2), the even sandblast in two sides 10～20 minutes successively, polish its surface and remove burr and surface oxidation casting skin on the hollow out wall; Said step (two) is to be medium with mill liquid, is power with mill liquid pump and compressed air, mill liquid is quickened in the nozzle of sand-blasting machine after ejaculation, the mill liquid of high-speed motion is ejected into polished surface on the forming panel, wherein,
Mill liquid is the mixture of abrasive material and industrial running water, and its proportion is 1: 3～1: 7, and abrasive material is bead or brown corundum or white fused alumina;
Said nozzle is that jetting height is 40～60mm from the template surface distance of being sprayed;
Said nozzle is that spray angle is 70 °～90 ° with the angle of the template surface that is sprayed;
Said compressed air is expulsion pressure from the dynamics of nozzle ejection, and air pressure is at 0.10～0.2Mpa;
Described injection is that staged is sprayed.
2. the finishing method of laser cut metal stencil as claimed in claim 1 is characterized in that, said step 2 may further comprise the steps: (one), forming panel is immersed in except that in the oil solution; (2), on forming panel surface and hollow out wall, clean positive and negative with soft brush and cotton; (3), forming panel is washed with pure running water.
3. the finishing method of laser cut metal stencil as claimed in claim 1 is characterized in that, said step 3 may further comprise the steps: (one), forming panel is fixed; (2), evenly blow successively with compressed-air actuated air-flow and penetrate the moisture content of taking away on its surface and the hollow out wall.
4. the finishing method of laser cut metal stencil as claimed in claim 2; It is characterized in that; The oil solution that removes in the step of said step 2 () is in industrial running water, to add cleanser; Its proportion is 0.2%～0.3%, and the said temperature of removing oil solution is 30～40 ℃, and the time that the step of said step 2 (two) is carried out is 5～8 minutes.
5. the finishing method of laser cut metal stencil as claimed in claim 3 is characterized in that, the compressed-air actuated air pressure in the step of said step 3 (two) is 0.10～0.2Mpa, and blowing the time of penetrating is obverse and reverse each 3～7 minutes.
6. the finishing method of laser cut metal stencil as claimed in claim 3 is characterized in that, the injecting time in the step of said step 3 (two) is different with the size of cut metal stencil, and environment temperature is-5～+ 40 ℃, and relative humidity is not more than 85%.
7. the finishing method of laser cut metal stencil as claimed in claim 1; It is characterized in that; To size be: the forming panel of the thick 0.15mm of the wide 600mm of long 600mm, evenly the positive time of staged sandblast cutting is 3～7 minutes successively, the cutting reverse side time is 7～13 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102163703A CN101683722B (en) | 2008-09-25 | 2008-09-25 | Method for polishing laser cut metal stencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102163703A CN101683722B (en) | 2008-09-25 | 2008-09-25 | Method for polishing laser cut metal stencil |
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| CN101683722A CN101683722A (en) | 2010-03-31 |
| CN101683722B true CN101683722B (en) | 2012-01-04 |
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| CN2008102163703A Expired - Fee Related CN101683722B (en) | 2008-09-25 | 2008-09-25 | Method for polishing laser cut metal stencil |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104827796A (en) * | 2015-04-25 | 2015-08-12 | 桐城运城制版有限公司 | Surface processing method of printing template |
| CN104837303A (en) * | 2015-04-25 | 2015-08-12 | 桐城运城制版有限公司 | Production technology of printing template |
| CN105171581A (en) * | 2015-08-14 | 2015-12-23 | 太仓安托建筑材料有限公司 | Metal part polishing process |
| CN105563292B (en) * | 2015-12-17 | 2017-09-08 | 东莞市秦智工业设计有限公司 | A kind of polissoir of SMT laser templates |
| CN108866618A (en) * | 2018-06-25 | 2018-11-23 | 光宏光电技术（深圳）有限公司 | Micro- spacing steel net template electrolytic brightening process |
| CN110091257A (en) * | 2019-05-05 | 2019-08-06 | 常州世竟液态金属有限公司 | A kind of zirconium-base amorphous alloy surface sand-blasting technique |
| CN110091221A (en) * | 2019-05-13 | 2019-08-06 | 成都工业学院 | A kind of die surface processing method |
| CN111823065A (en) * | 2020-08-04 | 2020-10-27 | 苏州蓝昇精密制版科技有限公司 | Grinding and polishing method for inner wall of grid line of screen printing plate |
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