CN104087941A - Etching method and equipment of etching stainless steel by ferric chloride - Google Patents
Etching method and equipment of etching stainless steel by ferric chloride Download PDFInfo
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- CN104087941A CN104087941A CN201410341417.4A CN201410341417A CN104087941A CN 104087941 A CN104087941 A CN 104087941A CN 201410341417 A CN201410341417 A CN 201410341417A CN 104087941 A CN104087941 A CN 104087941A
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Abstract
The invention relates to an etching method and equipment of etching a stainless steel by ferric chloride and equipment for etching the stainless steel by the ferric chloride, relates to the technical field of etching the stainless steel and aims to solve the technical deficiencies of the stainless steel etched by the traditional ferric chloride etching solution that the service life is short, the etching quality can not be ensured and the like. The etching method comprises the steps of before first etching, metering the total amount of the stainless steel needed etching, and carrying out sampling examination on the etching solution; after the first etching is completed, calculating the loss amount of the stainless steel, and carrying out sampling examination on the etching solution again; and according to the loss amount of the stainless steel and the variable quantities of percentage mass contents of ferrous chloride, free acid and the ferric chloride in the etching solution, setting the starting time periods of first and second addition pumps controlled to be started each etching in a main control module. With the adoption of the etching method, the service life of the ferric chloride etching solution is prolonged, the frequency of washing an etching machine is reduced, the yield is increased, the etching solution has stronger stability, the quality of a product is improved, the production benefit is wholly increased, the cost is lowered, and the effect is obvious.
Description
Technical field
The present invention relates to stainless etching technique field.
Background technology
Chemical milling is to utilize the corrosive nature of chemical solution that unwanted metal is dissolved to the process of removing fast by chemical reaction.The basic technology of chemical milling is; Original metal body is carried out to conventional cleaning and oil removing, make surface cleaning, and then at its surperficial topped acid-proof ink, and expose according to processing drawing, then develop and firmly treatment, the metal that the corrosion of recycling chemical etching liquor exposes, after corrosion process finishes, surperficial ink is removed with strong alkali solution, last water cleans up and obtains etching and processing the Worker's Stadium product again.
Iron trichloride etching solution etching stainless steel produces ferrous chloride: Fe+2FeCl
3→ 3FeCl
2at this moment etching solution liquor ferri trichloridi concentration declines at trace, and ferrous chloride increases at trace.Iron trichloride concentration is the stainless principal element of etching, and ferrous chloride concentration is to hinder the stainless factor of etching.After iron trichloride etching solution etching stainless steel microfabrication for some time or some products of etching and processing, this etching solution etch capabilities progressively declines, to not etching into qualified product.So will whole the iron trichloride etching solution that etching machine renews, also to wash machine, iron trichloride etching solution is short work-ing life.
Summary of the invention
In sum, the object of the invention is to solve existing iron trichloride etching solution etching stainless steel short work-ing life, etching quality there is not the technical deficiencies such as assurance, and proposes a kind of with the stainless engraving method of iron trichloride etching and equipment.
For solving technical problem proposed by the invention, the technical scheme adopting is: a kind of with the stainless engraving method of iron trichloride etching, it is characterized in that described engraving method adopts etching machine etching, more than the ORP value 650mv of the iron trichloride etching solution in etching machine; Etching machine is before etching first, and metering needs etching stainless steel total amount, and will sample detection to etching solution, detects the quality percentage composition of ferrous chloride in etching solution, free acid and iron trichloride; After etching completes first, measured stainless steel total amount after etching, thereby calculated stainless steel loss amount, again to etching solution, will sample detection, detected the quality percentage composition of ferrous chloride in etching solution, free acid and iron trichloride simultaneously; According to the quality percentage composition variable quantity of ferrous chloride, free acid and iron trichloride in stainless steel loss amount and etching solution, after setting in main control module, etching control opened for the first time cycle of adding pump and the second interpolation pump unlatching each time; Additive when the first interpolation pump is opened in additive reservoir starts to add in etching machine, and hydrochloric acid when the second interpolation pump is opened in hydrochloric acid reservoir starts to add in etching machine; Cycle is detected monitoring to the ORP value of the etching solution in etching machine to electricity potential detector at preset timed intervals.
The indication range of the etching solution in described etching machine is: iron trichloride quality percentage composition 33%～43%, ferrous chloride quality percentage composition 0.50%～5.0%, acidity (in HCL) quality percentage composition 0.3% ~ 2.00%, etching solution density 1.40～1.50,40 ℃～54 ℃ of temperature.
When ferrous chloride quality percentage composition is greater than 1.0%, starts to open the first interpolation pump and second and add pump; When being less than 0.5%, ferrous chloride quality percentage composition closes the first interpolation pump and the second interpolation pump.
Additive in additive reservoir is sodium chlorate; The technical hydrochloric acid of concentration >=30% is housed in hydrochloric acid reservoir.
Described etching solution is added with defoamer, and the content of described defoamer is 0.5 ~ 1g/L.
Described defoamer is at least one in op-10. dimethyl siloxane, octane and silicone glycols.
Electricity potential detector carried out one-time detection monitoring at interval of 1 hour to the ORP value of the etching solution in etching machine.
Realize the etching machines of described engraving method, it is characterized in that described etching machines includes etching machine, is characterized in that: in etching machine, be provided with electricity potential detector; Also include additive reservoir and hydrochloric acid reservoir; Additive reservoir adds pump through the first interpolation pump and second respectively with hydrochloric acid reservoir and is connected with etching machine, and electricity potential detector is connected with main control module, and main control module connects controls the first interpolation pump and the second interpolation pump.
Beneficial effect of the present invention is: when first the present invention passes through test iron trichloride etching solution etching stainless steel, loss amount after individual stainless steel substrates etching, extrapolate the sodium chlorate of the required interpolation of iron trichloride etching solution in the unit time and the amount of hydrochloric acid, increase additive sodium chlorate and hydrochloric acid, exactly the iron trichloride concentration that adds to decline of the ferrous chloride conversion equivalent producing.The balanced like this iron trichloride concentration that keeps does not decline, and ferrous chloride does not increase; 6FeCl
2+ NaClO
3+ 6HCl → 6FeCl
3+ NaCl+3H
2o.Make liquor ferri trichloridi in etching machine remain at very prosperous and powerful oxidizing potential gesture, with ORP, represent generally all in ORP value more than 650.Improve iron trichloride etching solution work-ing life, reduce and rinse etching machine frequency, improve production capacity, make etching solution have good stability, improve the quality of products, the whole productivity effect that improves, has reduced costs significant effect.
Accompanying drawing explanation
Fig. 1 etching machines block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and the preferred specific embodiment of the present invention, the present invention is further described.
Shown in Fig. 1, etching machines of the present invention includes etching machine, in etching machine, be provided with electricity potential detector, electricity potential detector is for detection of the ORP(Oxidation-Reduction Potential redox potential of iron trichloride etching solution in etching machine) value; At other additive reservoir and the hydrochloric acid reservoir that two 150 liters of capacity are set of etching machine, additive reservoir is used for storing additive, additive is preferably sodium chlorate, the technical hydrochloric acid of hydrochloric acid reservoir concentration >=30%, additive reservoir adds pump through the first interpolation pump and second respectively with hydrochloric acid reservoir and is connected with etching machine; In order to reach automatization, control the first interpolation pump and the second interpolation pump, realize automatically to adding sodium chlorate and hydrochloric acid in etching machine, the present invention also includes a main control module, main control module connects controls the first interpolation pump and the second interpolation pump, main control module is controlled first according to parameter preset and is added pump and the second interpolation cycle pump opening time, guarantee that in etching machine, iron trichloride concentration does not decline, ferrous chloride does not increase; Make liquor ferri trichloridi in etching machine remain at very prosperous and powerful oxidizing potential gesture, with ORP, represent generally all in ORP value more than 650.Electricity potential detector is also connected with main control module, by main control module, ORP value is carried out to monitoring and reminding.
Of the present invention with the stainless engraving method of iron trichloride etching:
Adopt above-mentioned etching machine etching, more than the ORP value 650mv of the iron trichloride etching solution in etching machine; The standard that the content that adopts iron trichloride during preparation iron trichloride etching solution is 300 ~ 440g/L; Etching machine is before etching first, and metering needs etching stainless steel total amount, and will sample detection to etching solution, detects the quality percentage composition of ferrous chloride in etching solution, free acid and iron trichloride; In etching solution, iron trichloride and ferrous chloride content value are the sample thiefs inside etching machine that requires test method and detection rule to test according to GB/T1621-2008, test acquisition in chemical laboratory.
After etching completes first, measured stainless steel total amount after etching, thereby calculated stainless steel loss amount, again to etching solution, will sample detection, detected the quality percentage composition of ferrous chloride in etching solution, free acid and iron trichloride simultaneously; According to the quality percentage composition variable quantity of ferrous chloride, free acid and iron trichloride in stainless steel loss amount and etching solution, can calculate loss amount after individual stainless steel substrates etching, extrapolate the sodium chlorate of the required interpolation of iron trichloride etching solution in the unit time and the amount of hydrochloric acid, engraving method of the present invention is particularly useful for the stainless steel of same etch effect in enormous quantities.
After setting in main control module according to the addition of the above-mentioned sodium chlorate of extrapolating and hydrochloric acid, etching control opened for the first time cycle of adding pump and the second interpolation pump unlatching each time; Additive when the first interpolation pump is opened in additive reservoir starts to add in etching machine, and hydrochloric acid when the second interpolation pump is opened in hydrochloric acid reservoir starts to add in etching machine; Also adopt how many sodium chlorate of etch consumption and hydrochloric acid, average rate or add how many sodium chlorate and hydrochloric acid off and in etching solution just slowly, reach and consume and add balanced maintenance, the indication range that guarantees the etching solution in etching machine is: iron trichloride quality percentage composition 33%～43%, ferrous chloride quality percentage composition 0.50%～5.0%, acidity (in HCL) quality percentage composition 0.3% ~ 2.00%, etching solution density 1.40～1.50,40 ℃～54 ℃ of temperature.The etching solution reaching in These parameters after etching machine just can remain at very prosperous and powerful oxidizing potential gesture, with ORP, represents generally all in ORP value more than 650.When generally ferrous chloride quality percentage composition is greater than 1.0%, start to add sodium chlorate and hydrochloric acid, be less than 0.5% and stop adding; Being greater than 5.0% automatically adds and is difficult to maintain normal etching.Or while being less than 40% according to iron trichloride quality percentage composition, beginning additive effect is better, lower than 33%, weak effect, is because etching solution interference element is many, can cause etch effect not good.Electricity potential detector carried out one-time detection monitoring at interval of 1 hour to the ORP value of the etching solution in etching machine, to detect, automatic powder adding adds sodium chlorate and whether hydrochloric acid is normal, whether the fluctuation of ferrous chloride content is large, and whether output channel is unobstructed, otherwise will adjust in time and safeguard.
In the interior etching process of etching machine, stainless steel and the etching solution way of contact are: stainless steel is placed the method with Low-pressure spray in etching solution etching solution is sprayed uniformly on stainless surface.The pressure of Low-pressure spray is 0.20 ~ 0.35MPa.Etching solution of the present invention can strengthen lateral erosion, makes the smooth of the edge, and etched edge slope presents round and smooth shape, realizes the natural transition of etching face and the original substrate surface of stainless steel, effectively applies component and the electronic product of various high degree of accuracy.
Described etching solution can be added with defoamer, and the content of described defoamer is 0.5 ~ 1g/L.Defoamer is at least one in op-10. dimethyl siloxane, octane and silicone glycols.
Claims (8)
1. with the stainless engraving method of iron trichloride etching, it is characterized in that described engraving method adopts etching machine etching, more than the ORP value 650mv of the iron trichloride etching solution in etching machine; Etching machine is before etching first, and metering needs etching stainless steel total amount, and will sample detection to etching solution, detects the quality percentage composition of ferrous chloride in etching solution, free acid and iron trichloride; After etching completes first, measured stainless steel total amount after etching, thereby calculated stainless steel loss amount, again to etching solution, will sample detection, detected the quality percentage composition of ferrous chloride in etching solution, free acid and iron trichloride simultaneously; According to the quality percentage composition variable quantity of ferrous chloride, free acid and iron trichloride in stainless steel loss amount and etching solution, after setting in main control module, etching control opened for the first time cycle of adding pump and the second interpolation pump unlatching each time; Additive when the first interpolation pump is opened in additive reservoir starts to add in etching machine, and hydrochloric acid when the second interpolation pump is opened in hydrochloric acid reservoir starts to add in etching machine; Cycle is detected monitoring to the ORP value of the etching solution in etching machine to electricity potential detector at preset timed intervals.
2. engraving method according to claim 1, it is characterized in that: the indication range of the etching solution in described etching machine is: iron trichloride quality percentage composition 33%～43%, ferrous chloride quality percentage composition 0.50%～5.0%, acidity (in HCL) quality percentage composition 0.3% ~ 2.00%, etching solution density 1.40～1.50,40 ℃～54 ℃ of temperature.
3. engraving method according to claim 1, is characterized in that: when ferrous chloride quality percentage composition is greater than 1.0%, starts to open the first interpolation pump and second and add pump; When being less than 0.5%, ferrous chloride quality percentage composition closes the first interpolation pump and the second interpolation pump.
4. engraving method according to claim 1, is characterized in that: the additive in additive reservoir is sodium chlorate; The technical hydrochloric acid of concentration >=30% is housed in hydrochloric acid reservoir.
5. engraving method according to claim 1, is characterized in that: described etching solution is added with defoamer, and the content of described defoamer is 0.5 ~ 1g/L.
6. engraving method according to claim 5, is characterized in that: described defoamer is at least one in op-10. dimethyl siloxane, octane and silicone glycols.
7. engraving method according to claim 1, is characterized in that: electricity potential detector carried out one-time detection monitoring at interval of 1 hour to the ORP value of the etching solution in etching machine.
8. the etching machines of realizing engraving method described in claim 1 to 7 any one, is characterized in that described etching machines includes etching machine, is characterized in that: in etching machine, be provided with electricity potential detector; Also include additive reservoir and hydrochloric acid reservoir; Additive reservoir adds pump through the first interpolation pump and second respectively with hydrochloric acid reservoir and is connected with etching machine, and electricity potential detector is connected with main control module, and main control module connects controls the first interpolation pump and the second interpolation pump.
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| CN201410341417.4A CN104087941A (en) | 2014-07-17 | 2014-07-17 | Etching method and equipment of etching stainless steel by ferric chloride |
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| CN201410341417.4A CN104087941A (en) | 2014-07-17 | 2014-07-17 | Etching method and equipment of etching stainless steel by ferric chloride |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815687A (en) * | 2017-10-17 | 2018-03-20 | 江苏沪运制版有限公司 | Copper chloride corrosive liquid regenerating unit |
| CN110144589A (en) * | 2018-02-11 | 2019-08-20 | 扬昕科技(苏州)有限公司 | The manufacturing method of stainless steel etching solution and the light-conducting board mold element using it |
| CN111332000A (en) * | 2020-03-31 | 2020-06-26 | 佛山运城压纹制版有限公司 | Corrosion process and production and manufacturing method of gravure roller |
| CN112235953A (en) * | 2020-10-26 | 2021-01-15 | 昆山迪卡特精密电子有限公司 | Double-sided etching process for node-free reinforcing plate |
| CN113046746A (en) * | 2021-03-12 | 2021-06-29 | 合肥奕斯伟材料技术有限公司 | Precise etching control method for COF (chip on film) winding |
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| CN2727191Y (en) * | 2004-09-06 | 2005-09-21 | 中国科学院大连化学物理研究所 | Chemical etching machine |
| CN101004598A (en) * | 2006-01-17 | 2007-07-25 | 奇奕国际股份有限公司 | Automated etching control system, equipment, and method |
| CN102965667A (en) * | 2012-12-10 | 2013-03-13 | 南通南京大学材料工程技术研究院 | Method for regenerating and recycling waste etching solution in stainless steel etching production line |
| CN103710706A (en) * | 2013-12-24 | 2014-04-09 | 沈阳师范大学 | Purification and regeneration method of iron trichloride etching waste liquid |
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2014
- 2014-07-17 CN CN201410341417.4A patent/CN104087941A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2727191Y (en) * | 2004-09-06 | 2005-09-21 | 中国科学院大连化学物理研究所 | Chemical etching machine |
| CN101004598A (en) * | 2006-01-17 | 2007-07-25 | 奇奕国际股份有限公司 | Automated etching control system, equipment, and method |
| CN102965667A (en) * | 2012-12-10 | 2013-03-13 | 南通南京大学材料工程技术研究院 | Method for regenerating and recycling waste etching solution in stainless steel etching production line |
| CN103710706A (en) * | 2013-12-24 | 2014-04-09 | 沈阳师范大学 | Purification and regeneration method of iron trichloride etching waste liquid |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815687A (en) * | 2017-10-17 | 2018-03-20 | 江苏沪运制版有限公司 | Copper chloride corrosive liquid regenerating unit |
| CN110144589A (en) * | 2018-02-11 | 2019-08-20 | 扬昕科技(苏州)有限公司 | The manufacturing method of stainless steel etching solution and the light-conducting board mold element using it |
| CN111332000A (en) * | 2020-03-31 | 2020-06-26 | 佛山运城压纹制版有限公司 | Corrosion process and production and manufacturing method of gravure roller |
| CN112235953A (en) * | 2020-10-26 | 2021-01-15 | 昆山迪卡特精密电子有限公司 | Double-sided etching process for node-free reinforcing plate |
| CN113046746A (en) * | 2021-03-12 | 2021-06-29 | 合肥奕斯伟材料技术有限公司 | Precise etching control method for COF (chip on film) winding |
| CN113046746B (en) * | 2021-03-12 | 2023-03-10 | 合肥颀材科技有限公司 | Precise etching control method for COF (chip on film) winding |
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Application publication date: 20141008 |