CN103599893B - Method for flushing lead frame raw materials of power integrated circuit - Google Patents
Method for flushing lead frame raw materials of power integrated circuit Download PDFInfo
- Publication number
- CN103599893B CN103599893B CN201310414004.XA CN201310414004A CN103599893B CN 103599893 B CN103599893 B CN 103599893B CN 201310414004 A CN201310414004 A CN 201310414004A CN 103599893 B CN103599893 B CN 103599893B
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- CN
- China
- Prior art keywords
- water
- flushing
- lead frame
- integrated circuit
- raw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002994 raw material Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000011010 flushing procedure Methods 0.000 title abstract 14
- 238000004140 cleaning Methods 0.000 claims abstract description 61
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 21
- 230000003746 surface roughness Effects 0.000 claims description 12
- 230000005021 gait Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 239000002932 luster Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 239000010731 rolling oil Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a method for flushing lead frame raw materials of a power integrated circuit. The method is characterized by comprising the steps of cleaning the lead frame raw materials through flushing rollers, wherein every two flushing rollers form a pair; clamping the raw materials between the two pairs of flushing rollers to perform rolling flushing on the raw materials, wherein pressure between the flushing rollers and the raw materials is kept constant through hydraulic pressure during flushing. Compared with the prior art, the method has the advantages that an oxidation layer on the surface of metal is removed by means of rolling flushing of the flushing rollers, the obtained metal surface is conform in color and luster, and the process is friendly to the environment; the pressure between the flushing rollers and the raw materials is kept constant through the hydraulic pressure during flushing, the flushing effect is uniform, and the color and the luster are conform; flushing materials are formed by bonding nylon wires and aluminum oxide powder, therefore, damage to products is avoided, and the oxidation layer can be removed completely.
Description
Technical field
The present invention relates to the method for cleaning with water, relate in particular to that power integrated circuit lead frame is raw-material cleans method with water, belong to the raw-material production technical field of lead frame.
Background technology
Power integrated circuit lead frame is stamped to form primarily of sheet metal strip, sheet metal strip is after machining and annealing, also need the oxide layer removing surface, conventional minimizing technology is pickling, the pickle of acid cleaning process is generally the mixture of multiple acid, mainly contain sulfuric acid, nitric acid and hydrofluoric acid etc., the corrosivity of these mixed acid is very strong, there is very strong oxidisability simultaneously, the temperature of higher corrosive medium, this proposes very high requirement to the corrosion resisting property of anti-corrosion material, due to volatilization and the emission problem of pickle, the method is very unfavorable in environmental protection, larger to the destruction of environment, and its cost is higher, to a certain degree adding the production cost of product, therefore, a kind of method of cleaning with water newly of exigence solves above-mentioned technical problem.
Summary of the invention
The present invention is just for the technical problem existed in prior art, disclose that a kind of power integrated circuit lead frame is raw-material cleans method with water, the method uses the rolling of cleaning roller to clean the oxide layer removing metal surface with water, color and luster is consistent more in the metal surface obtained, whole process is without any pollution, environmental protection more, and cost is lower, reduce further the production work cost of enterprise.
To achieve these goals, technical scheme of the present invention is as follows, a kind of power integrated circuit lead frame is raw-material cleans method with water, and it is characterized in that, described method is as follows, cleaning roller is used to clean to lead frame raw material, two cleaning rollers partner, and are clamped in by raw material in the middle of two pairs of cleaning rollers, carry out rolling clean with water raw material, cleaning with water in process, keeping pressure constant between cleaning roller and raw material by hydraulic pressure.
As a further improvement on the present invention, the material of cleaning with water on described cleaning roller is formed by nylon yarn and aluminium oxide powder bonding, and described aluminium oxide powder crosses 1500-2500 order.
As a further improvement on the present invention, the quantity of described cleaning roller is 4.
As a further improvement on the present invention, described cleaning roller pressure and angle can regulate arbitrarily, use ROLLING OIL to carry out cleaning and cooling.
As a further improvement on the present invention, the gait of march of described cleaning roller 4-6 ms/min, ensures the uniformity cleaned with water further.
As a further improvement on the present invention, the described cleaning roller one side amount of cleaning with water 0.005-0.015mm, by hydraulic-driven, pressure is 3-7 kilogram, and roller rotating speed is 500-900 rev/min.
As a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 4 kilograms, roller rotating speed 800 revs/min, output surface roughness Rmax 1.1 μm.
As a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 4 kilograms, roller rotating speed 600 revs/min, output surface roughness Rmax 1.2 μm.
As a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 6 kilograms, roller rotating speed 800 revs/min of output surface roughness Rmax 1.0 μm.
As a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 6 kilograms, roller rotating speed 600 revs/min, output surface roughness Rmax 1.1 μm.
Relative to prior art, beneficial effect of the present invention is as follows: the method uses the rolling of cleaning roller to clean the oxide layer removing metal surface with water, color and luster is consistent more in the metal surface obtained, process is environmental protection more, cleaning in process the maintain constant pressure applied between hydraulic pressure maintenance cleaning roller and raw material with water, make to clean uniform in effect with water, color and luster is consistent; Clean material with water to be formed by nylon yarn and aluminium oxide powder bonding, both can not cause damage to product, and in turn ensure that the thorough removing of oxide layer; In addition, cleaning roller pressure and angle can regulate arbitrarily, greatly facilitate carrying out smoothly of the work of cleaning with water, the described cleaning roller one side amount of cleaning with water 0.005-0.015mm, by hydraulic-driven, pressure is 3-7 kilogram, and roller rotating speed is 500-900 rev/min, this setting further ensures pressure constant between cleaning roller and raw material, makes to clean effect with water more even.
Detailed description of the invention
In order to deepen the understanding of the present invention and understanding, below in conjunction with the drawings and specific embodiments the present invention being made further instructions and introducing.
embodiment 1:
A kind of power integrated circuit lead frame is raw-material cleans method with water, it is characterized in that, described method is as follows, cleaning roller is used to clean to lead frame raw material, two cleaning rollers partner, and are clamped in by raw material in the middle of two pairs of cleaning rollers, carry out rolling clean with water raw material, cleaning with water in process, keeping pressure constant between cleaning roller and raw material by hydraulic pressure.This cleans in process the maintain constant pressure applied between hydraulic pressure maintenance cleaning roller and raw material with water, and make to clean uniform in effect with water, color and luster is consistent.
embodiment 2:
As a further improvement on the present invention, the material of cleaning with water on described cleaning roller is formed by nylon yarn and aluminium oxide powder bonding, and described aluminium oxide powder crosses 1500-2500 order.This is cleaned material with water and both can not cause damage to product, in turn ensure that the thorough removing of oxide layer.
embodiment 3:as a further improvement on the present invention, the quantity of described cleaning roller is 4, is divided into 2 groups, and often organize 2, raw material are clipped in the middle and clean with water by two groups of rollers.
embodiment 4:as a further improvement on the present invention, described cleaning roller pressure and angle can regulate arbitrarily, use ROLLING OIL to carry out cleaning and cooling.Further ensure the free degree cleaned with water, easy to operate.
embodiment 5:as a further improvement on the present invention, the gait of march 4-6 ms/min of described cleaning roller.
embodiment 6:as a further improvement on the present invention, the described cleaning roller one side amount of cleaning with water 0.005-0.015mm, by hydraulic-driven, pressure is 3-7 kilogram, and roller rotating speed is 500-900 rev/min.
embodiment 7:as a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 4 kilograms, roller rotating speed 800 revs/min, output surface roughness Rmax 1.1 μm.
embodiment 8:as a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 4 kilograms, roller rotating speed 600 revs/min, output surface roughness Rmax 1.2 μm.
embodiment 9:as a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 6 kilograms, roller rotating speed 800 revs/min of output surface roughness Rmax 1.0 μm.
embodiment 10:as a further improvement on the present invention, the hydraulic-driven pressure of described cleaning roller is 6 kilograms, roller rotating speed 600 revs/min, output surface roughness Rmax 1.1 μm.
The present invention can also will carry out between embodiment being combined to form new embodiment.
It should be noted that above-described embodiment is only preferred embodiment of the present invention; be not used for limiting protection scope of the present invention; equivalent replacement done on the basis of the above or substitute and all belong to protection scope of the present invention, protection scope of the present invention is as the criterion with claims.
Claims (8)
1. a power integrated circuit lead frame is raw-material cleans method with water, it is characterized in that, described method is as follows, cleaning roller is used to clean to lead frame raw material, two cleaning rollers partner, and are clamped in by raw material in the middle of two pairs of cleaning rollers, carry out rolling clean with water raw material, cleaning with water in process, keeping pressure constant between cleaning roller and raw material by hydraulic pressure.
2. power integrated circuit lead frame according to claim 1 is raw-material cleans method with water, it is characterized in that, the material of cleaning with water on described cleaning roller is formed by nylon yarn and aluminium oxide powder bonding, and described aluminium oxide powder crosses 1500-2500 order.
3. power integrated circuit lead frame according to claim 1 is raw-material cleans method with water, it is characterized in that, the quantity of described cleaning roller is 4.
4. power integrated circuit lead frame according to claim 1 is raw-material cleans method with water, it is characterized in that, the gait of march of described cleaning roller 4-6 ms/min.
5. power integrated circuit lead frame according to claim 4 is raw-material cleans method with water, it is characterized in that, the hydraulic-driven pressure of described cleaning roller is 4 kilograms, roller rotating speed 800 revs/min, output surface roughness Rmax 1.1 μm.
6. power integrated circuit lead frame according to claim 4 is raw-material cleans method with water, it is characterized in that, the hydraulic-driven pressure of described cleaning roller is 4 kilograms, roller rotating speed 600 revs/min, output surface roughness Rmax 1.2 μm.
7. power integrated circuit lead frame according to claim 4 is raw-material cleans method with water, it is characterized in that, the hydraulic-driven pressure of described cleaning roller is 6 kilograms, roller rotating speed 800 revs/min of output surface roughness Rmax 1.0 μm.
8. power integrated circuit lead frame according to claim 4 is raw-material cleans method with water, it is characterized in that, the hydraulic-driven pressure of described cleaning roller is 6 kilograms, roller rotating speed 600 revs/min, output surface roughness Rmax 1.1 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310414004.XA CN103599893B (en) | 2013-09-12 | 2013-09-12 | Method for flushing lead frame raw materials of power integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310414004.XA CN103599893B (en) | 2013-09-12 | 2013-09-12 | Method for flushing lead frame raw materials of power integrated circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103599893A CN103599893A (en) | 2014-02-26 |
| CN103599893B true CN103599893B (en) | 2015-07-15 |
Family
ID=50118189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310414004.XA Active CN103599893B (en) | 2013-09-12 | 2013-09-12 | Method for flushing lead frame raw materials of power integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103599893B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105015A (en) * | 2006-09-29 | 2008-05-08 | Nitto Denko Corp | Tape cartridge for cleaning workpiece |
| CN201421841Y (en) * | 2009-06-05 | 2010-03-10 | 三星电子株式会社 | Lead frame and packaging part |
| CN102034781B (en) * | 2009-09-25 | 2013-09-18 | 万国半导体有限公司 | Semiconductor package for printing bonding material on lead frame and wafer and manufacturing method thereof |
| US20120306031A1 (en) * | 2011-05-31 | 2012-12-06 | Freescale Semiconductor, Inc. | Semiconductor sensor device and method of packaging same |
| CN202238734U (en) * | 2011-08-29 | 2012-05-30 | 江阴康强电子有限公司 | Lead frame rinsing tank |
| CN103094240A (en) * | 2012-12-15 | 2013-05-08 | 华天科技（西安）有限公司 | High-density etched lead frame FCAAQFN package part and manufacture process thereof |
-
2013
- 2013-09-12 CN CN201310414004.XA patent/CN103599893B/en active Active
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| Publication number | Publication date |
|---|---|
| CN103599893A (en) | 2014-02-26 |
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