CN108135092A - A kind of cleaning of printed circuit board - Google Patents
A kind of cleaning of printed circuit board Download PDFInfo
- Publication number
- CN108135092A CN108135092A CN201711394400.5A CN201711394400A CN108135092A CN 108135092 A CN108135092 A CN 108135092A CN 201711394400 A CN201711394400 A CN 201711394400A CN 108135092 A CN108135092 A CN 108135092A
- Authority
- CN
- China
- Prior art keywords
- printed circuit
- circuit board
- cleaning
- gradient elution
- cleaning agent
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/26—Cleaning or polishing of the conductive pattern
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0756—Uses of liquids, e.g. rinsing, coating, dissolving
- H05K2203/0766—Rinsing, e.g. after cleaning or polishing a conductive pattern
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a kind of cleanings of printed circuit board, include the following steps：Printed circuit board is placed into preneutralization cylinder；Adjust the concentration gradient elution of the cleaning agent in preneutralization cylinder；Printed circuit board is dry in drying machine.The cleaning of printed circuit board of the present invention can effectively remove welding residue, ensure the quality of printed circuit.The usage amount of cleaning agent can be effectively saved by gradient elution, meets the theory of health environment-friendly.
Description
Technical field
The present invention relates to a kind of cleanings of printed circuit board, belong to Manufacturing Technology for PCB field.
Background technology
Printed circuit board is a kind of important electronic unit, is the supplier of electronic component electrical connection.PCB industries
The output value accounts for more than a quarter of the electronic component industry gross output value, is the production of proportion maximum in each electronic component subdivision industry
Industry, be widely used in automotive electronics, communication apparatus, medical electronics, industrial control equipment, clean energy resource, intelligent security guard, aerospace and
The various fields such as military product.
The cleaning of printed circuit board is one of key factor for influencing printed circuit board quality, and it is improper such as to clean, and can cause
The problems such as solder joint corrodes, and causes circuit board short-circuit, component failure.Therefore the cleaning of printed circuit board is for high quality, Gao Ke
It is particularly important by the printed circuit product of property.
Invention content
In order to solve the above technical problems, the present invention provides a kind of technique of cleaning printed circuit board, include the following steps：
Step 1: printed circuit board is placed into preneutralization cylinder；
Step 2: adjust the concentration gradient elution of the cleaning agent in preneutralization cylinder；
It is Step 3: printed circuit board is dry in drying machine.
The cleaning of aforementioned printed circuit board, it is characterized in that, the ingredient of the cleaning agent includes acid solution and oxygen
Agent, the acid solution include one or more of sulfuric acid, hydrochloric acid or nitric acid, and the oxidant includes hydrogen peroxide, secondary chlorine
Acid or sodium peroxide are one or more of.
The cleaning of aforementioned printed circuit board, it is characterized in that, the cleaning agent uses the specific method of gradient elution
For：Different detergent concentrations is used in different time sections by prefixed time interval, prefixed time interval is 10 min.
The cleaning of aforementioned printed circuit board, it is characterized in that, a concentration of the 0 ~ 10% of the cleaning agent.
The cleaning of aforementioned printed circuit board, it is characterized in that, the gradient elution temperature is 40 ~ 60 DEG C.
The cleaning of aforementioned printed circuit board, it is characterized in that, the drying temperature is 30 ~ 50 DEG C.
The advantageous effect that the present invention is reached：It is residual can to effectively remove welding for the cleaning of printed circuit of the present invention
Object is stayed, ensures the quality of printed circuit.The usage amount of cleaning agent can be effectively saved by gradient elution, meets the reason of health environment-friendly
It reads.
Specific embodiment
The following examples are only intended to illustrate the technical solution of the present invention more clearly, and cannot limit the present invention with this
Protection domain.
Embodiment 1
A kind of technique of cleaning printed circuit board, includes the following steps：
Step 1: printed circuit board is placed into preneutralization cylinder；
Step 2: the concentration gradient elution of the cleaning agent in preneutralization cylinder is adjusted, by 10 min of prefixed time interval, in difference
Different detergent concentrations is used in period, elution concentration is first increased and reduced afterwards, elution a concentration of 0 ~ 5%；The ingredient of cleaning agent
For hydrochloric acid and hydrogen peroxide；Gradient elution temperature is 55 DEG C.
Step 3: printed circuit board is dry in drying machine, drying temperature is 40 DEG C.
Embodiment 2
A kind of technique of cleaning printed circuit board, includes the following steps：
Step 1: printed circuit board is placed into preneutralization cylinder；
Step 2: the concentration gradient elution of the cleaning agent in preneutralization cylinder is adjusted, by 10 min of prefixed time interval in difference
Different detergent concentrations is used in period, elution concentration is first increased and reduced afterwards, elution a concentration of 0 ~ 10%；Cleaning agent into
It is divided into hydrochloric acid and hydrogen peroxide；Gradient elution temperature is 60 DEG C.
Step 3: printed circuit board is dry in drying machine, drying temperature is 50 DEG C.
Embodiment 3
A kind of technique of cleaning printed circuit board, includes the following steps：
Step 1: printed circuit board is placed into preneutralization cylinder；
Step 2: the concentration gradient elution of the cleaning agent in preneutralization cylinder is adjusted, by 10 min of prefixed time interval in difference
Different detergent concentrations is used in period, elution concentration is first increased and reduced afterwards, elution a concentration of 0 ~ 8%；The ingredient of cleaning agent
For hydrochloric acid and hydrogen peroxide；Gradient elution temperature is 40 DEG C.
Step 3: printed circuit board is dry in drying machine, drying temperature is 30 DEG C.
The advantageous effect that the present invention is reached：The cleaning of printed circuit of the present invention can effectively get rid of welding
Residue ensures the quality of printed circuit.The usage amount of cleaning agent can be effectively saved by gradient elution, meets health environment-friendly
Theory.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of cleaning of printed circuit board, it is characterized in that, include the following steps：
Step 1: printed circuit board is placed into preneutralization cylinder；
Step 2: adjust the concentration gradient elution of the cleaning agent in preneutralization cylinder；
It is Step 3: printed circuit board is dry in drying machine.
2. the cleaning of printed circuit board according to claim 1, it is characterized in that, the ingredient of the cleaning agent includes acid
Property solution and oxidant, the acid solution includes one or more of sulfuric acid, hydrochloric acid or nitric acid, and the oxidant includes
One or more of hydrogen peroxide, hypochlorous acid or sodium peroxide.
3. the cleaning of printed circuit board according to claim 2, it is characterized in that, the cleaning agent uses gradient elution
Specific method be：Different detergent concentrations, prefixed time interval are used in different time sections by prefixed time interval
For 10 min.
4. the cleaning of printed circuit board according to claim 3, it is characterized in that, the detergent concentration is 0 ~ 10%.
5. the cleaning of printed circuit board according to claim 3 or 4, it is characterized in that, the gradient elution temperature
It is 40 ~ 60 DEG C.
6. the cleaning of printed circuit board according to claim 5, it is characterized in that, the drying temperature is 30 ~ 50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394400.5A CN108135092A (en) | 2017-12-21 | 2017-12-21 | A kind of cleaning of printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394400.5A CN108135092A (en) | 2017-12-21 | 2017-12-21 | A kind of cleaning of printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108135092A true CN108135092A (en) | 2018-06-08 |
Family
ID=62391257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711394400.5A Pending CN108135092A (en) | 2017-12-21 | 2017-12-21 | A kind of cleaning of printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108135092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111295058A (en) * | 2020-03-25 | 2020-06-16 | 深圳捷飞高电路有限公司 | Cleaning process and cleaning device for anti-interference mixed compression type circuit board |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104519664A (en) * | 2013-09-27 | 2015-04-15 | 北大方正集团有限公司 | Printed circuit board cleaning method and printed circuit board |
| CN105228361A (en) * | 2015-08-26 | 2016-01-06 | 江门崇达电路技术有限公司 | A kind of circuit board sinks the two neutralized systems in copper production line |
-
2017
- 2017-12-21 CN CN201711394400.5A patent/CN108135092A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104519664A (en) * | 2013-09-27 | 2015-04-15 | 北大方正集团有限公司 | Printed circuit board cleaning method and printed circuit board |
| CN105228361A (en) * | 2015-08-26 | 2016-01-06 | 江门崇达电路技术有限公司 | A kind of circuit board sinks the two neutralized systems in copper production line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111295058A (en) * | 2020-03-25 | 2020-06-16 | 深圳捷飞高电路有限公司 | Cleaning process and cleaning device for anti-interference mixed compression type circuit board |
| CN111295058B (en) * | 2020-03-25 | 2021-06-01 | 深圳捷飞高电路有限公司 | Cleaning process and cleaning device for anti-interference mixed compression type circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180608 |