CN104264163A - Copper alloy pretreatment method - Google Patents
Copper alloy pretreatment method Download PDFInfo
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- CN104264163A CN104264163A CN201410510401.1A CN201410510401A CN104264163A CN 104264163 A CN104264163 A CN 104264163A CN 201410510401 A CN201410510401 A CN 201410510401A CN 104264163 A CN104264163 A CN 104264163A
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Abstract
The invention discloses a copper alloy pretreatment method, comprising the following steps: 1, degreasing, namely soaking in degreasing fluid for 1-5 minutes, wherein the degreasing fluid comprises the following raw materials in parts by weight: 200-240 parts of water, 3-5 parts of ferric chloride and 8-15 parts of sulfuric acid, cleaning with water after soaking and then drying; 2, prewashing, namely putting the dried copper alloy into a prewashing solution to soak for 3-5 minutes, prewashing, cleaning, and drying; 3, electrolytic cleaning, namely putting copper alloy into electrolyte, carrying out electrolysis at 60-80 DEG C at the current density of 1-5A/dm<2> for 3-8 seconds, wherein the electrolyte contains 20-30wt% of sodium carbonate, 20-35wt% of sodium phosphate, 0.5-1.5wt% of surfactant and 5-15wt% of potassium hydroxide, prewashing, cleaning and drying; and 4, pickling, soaking by using 3-5wt% of a sulfuric acid solution for 1-10 minutes, cleaning with water and drying. The cleaning treatment effect of the method can reach or exceed that of an existing treatment technology, no hazardous liquid waste is generated, and physical health of a worker is not affected.
Description
Technical field
The invention belongs to the processing technology field of copper product, especially the pretreatment process of an Albatra metal-.
Background technology
Metal material surface usually can adhere to various dirt, comprises grease organism, oxide film and incrustation scale.Time for further processing, such as, when electroplating or spray paint, need the surface of high cleaning, keep surface smoothing light, be conducive to the attachment of electrolytic coating or coat of painting, therefore must process.But existing treatment process usually can produce a lot of waste water, comparatively large to environmental hazard, also there is larger potential safety hazard simultaneously, affect the person (such as prior art needs to soak with sodium cyanide, there is great security risk) of workman.
Summary of the invention
Goal of the invention: provide an Albatra metal-pretreatment process, to solve the problems referred to above of prior art.
Technical scheme: an Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 1 ~ 5min, described degreasing fluid is made up of the sulfuric acid of the water of 200 ~ 240 weight parts, the iron(ic) chloride of 3 ~ 5 weight parts and 8 ~ 15 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 3 ~ 5min, described pre-washing lotion is by sodium carbonate 15 ~ 25 weight part, tall oil soap 3 ~ 8 weight part, sodium alkylarysulfonate 2 ~ 6 weight part, Starso 20 ~ 25 weight part, tripoly phosphate sodium STPP 15 ~ 20 weight part, alkylaryl Soxylat A 25-7 0.5 ~ 1.5 weight part, the water composition of potassium hydroxide 10 ~ 15 weight part and 100 ~ 120 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 60 ~ 80 DEG C, 1 ~ 5A/dm
2current density under, electrolysis 3 ~ 8s, containing sodium carbonate 20 ~ 30wt%, sodium phosphate 20 ~ 35wt%, tensio-active agent 0.5 ~ 1.5wt% and potassium hydroxide 5 ~ 15wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 1 ~ 10 minute with the sulphuric acid soln of 3 ~ 5wt%, with water cleaning, dry.
In a further embodiment, described tensio-active agent is Yelkin TTS type or amino acid type surfactant.
Soak time in step 4 is 1 ~ 3 minute, and the time controls within 3 minutes as far as possible, prevents cupric ion and adheres to, affect the outward appearance on copper surface.
In a further embodiment, described pre-washing lotion is by sodium carbonate 20 ~ 22 weight part, tall oil soap 5 ~ 6 weight part, sodium alkylarysulfonate 4 ~ 5 weight part, Starso 21 ~ 23 weight part, tripoly phosphate sodium STPP 18 ~ 20 weight part, alkylaryl Soxylat A 25-7 1.2 ~ 1.5 weight part, the water composition of potassium hydroxide 10 ~ 12 weight part and 110 ~ 120 weight parts.
Beneficial effect: clean effect of the present invention can reach or exceed existing treatment process, and can not produce hazardness waste liquid, does not also affect the healthy of workman.
Embodiment
Embodiment 1
One Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 3min, described degreasing fluid is made up of the sulfuric acid of the water of 220 weight parts, the iron(ic) chloride of 4 weight parts and 10 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 4min, described pre-washing lotion is by sodium carbonate 15 weight part, tall oil soap 5 weight part, sodium alkylarysulfonate 4 weight part, Starso 22 weight part, tripoly phosphate sodium STPP 18 weight part, alkylaryl Soxylat A 25-7 1.2 weight part, the water composition of potassium hydroxide 12 weight part and 110 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 60 DEG C, 3A/dm
2current density under, electrolysis 5s, containing sodium carbonate 25wt%, sodium phosphate 35wt%, tensio-active agent 1.0wt% and potassium hydroxide 10wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 9 minutes with the sulphuric acid soln of 5wt%, with water cleaning, dry.
Embodiment 2
One Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 2min, described degreasing fluid is made up of the iron(ic) chloride of water 3.5 weight part of 230 weight parts and the sulfuric acid of 8 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 3.5min, described pre-washing lotion is by sodium carbonate 22 weight part, tall oil soap 6 weight part, sodium alkylarysulfonate 5 weight part, Starso 23 weight part, tripoly phosphate sodium STPP 20 weight part, alkylaryl Soxylat A 25-7 1.5 weight part, the water composition of potassium hydroxide 10 weight part and 115 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 80 DEG C, 1A/dm
2current density under, electrolysis 8s, containing sodium carbonate 30wt%, sodium phosphate 30wt%, tensio-active agent 1.5wt% and potassium hydroxide 12wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 8 minutes with the sulphuric acid soln of 4wt%, with water cleaning, dry.
Embodiment 3
One Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 4min, described degreasing fluid is made up of the sulfuric acid of the water of 240 weight parts, the iron(ic) chloride of 4.5 weight parts and 12 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 5min, described pre-washing lotion is by sodium carbonate 25 weight part, tall oil soap 8 weight part, sodium alkylarysulfonate 6 weight part, Starso 20 weight part, tripoly phosphate sodium STPP 15 weight part, alkylaryl Soxylat A 25-7 0.5 weight part, the water composition of potassium hydroxide 15 weight part and 120 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 65 DEG C, 5A/dm
2current density under, electrolysis 4s, containing sodium carbonate 22wt%, sodium phosphate 20wt%, tensio-active agent 0.8wt% and potassium hydroxide 15wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 2 minutes with the sulphuric acid soln of 3.5wt%, with water cleaning, dry.
Embodiment 4
One Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 5min, described degreasing fluid is made up of the sulfuric acid of the water of 205 weight parts, the iron(ic) chloride of 5 weight parts and 15 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 3min, described pre-washing lotion is by sodium carbonate 20 weight part, tall oil soap 5 weight part, sodium alkylarysulfonate 4 weight part, Starso 21 weight part, tripoly phosphate sodium STPP 18 weight part, alkylaryl Soxylat A 25-7 1.5 weight part, the water composition of potassium hydroxide 12 weight part and 115 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 75 DEG C, 4A/dm
2current density under, electrolysis 6s, containing sodium carbonate 28wt%, sodium phosphate 25wt%, tensio-active agent 1.2wt% and potassium hydroxide 5wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 5 minutes with the sulphuric acid soln of 4.5wt%, with water cleaning, dry.
Embodiment 5
One Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 1min, described degreasing fluid is made up of the sulfuric acid of the water of 210 weight parts, the iron(ic) chloride of 3 weight parts and 14 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 4.5min, described pre-washing lotion is by sodium carbonate 18 weight part, tall oil soap 7 weight part, sodium alkylarysulfonate 2 weight part, Starso 25 weight part, tripoly phosphate sodium STPP 20 weight part, alkylaryl Soxylat A 25-7 0.9 weight part, the water composition of potassium hydroxide 11 weight part and 100 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 70 DEG C, 2A/dm
2current density under, electrolysis 5s, containing sodium carbonate 26wt%, sodium phosphate 28wt%, tensio-active agent 0.6wt% and potassium hydroxide 8wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 3 minutes with the sulphuric acid soln of 3wt%, with water cleaning, dry.
Embodiment 6
One Albatra metal-pretreatment process, comprises the steps:
Step 1, degreasing: in degreasing fluid, soak 3min, described degreasing fluid is made up of the sulfuric acid of the water of 235 weight parts, the iron(ic) chloride of 3.5 weight parts and 11 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 3.5min, described pre-washing lotion is by sodium carbonate 21 weight part, tall oil soap 3 weight part, sodium alkylarysulfonate 3 weight part, Starso 24 weight part, tripoly phosphate sodium STPP 18 weight part, alkylaryl Soxylat A 25-7 1.4 weight part, the water composition of potassium hydroxide 14 weight part and 110 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 65 DEG C, 3A/dm
2current density under, electrolysis 4s, containing sodium carbonate 20wt%, sodium phosphate 33wt%, tensio-active agent 1.4wt% and potassium hydroxide 12wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 1 minute with the sulphuric acid soln of 5wt%, with water cleaning, dry.
In embodiment 1 ~ 6, the treatment effect of each embodiment is as follows:
Through adopting fluorescent method inspection, each embodiment is all qualified.This treatment process does not use with serious pollution reagent simultaneously, can not damage human body yet.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple equivalents to technical scheme of the present invention, these equivalents all belong to protection scope of the present invention.
Claims (4)
1. an Albatra metal-pretreatment process, is characterized in that, comprise the steps:
Step 1, degreasing: in degreasing fluid, soak 1 ~ 5min, described degreasing fluid is made up of the sulfuric acid of the water of 200 ~ 240 weight parts, the iron(ic) chloride of 3 ~ 5 weight parts and 8 ~ 15 weight parts; With water cleaning, oven dry after immersion;
Step 2, prewashing: the copper alloy after drying is put into pre-washing lotion, soak 3 ~ 5min, described pre-washing lotion is by sodium carbonate 15 ~ 25 weight part, tall oil soap 3 ~ 8 weight part, sodium alkylarysulfonate 2 ~ 6 weight part, Starso 20 ~ 25 weight part, tripoly phosphate sodium STPP 15 ~ 20 weight part, alkylaryl Soxylat A 25-7 0.5 ~ 1.5 weight part, the water composition of potassium hydroxide 10 ~ 15 weight part and 100 ~ 120 weight parts; After prewashing, cleaning, oven dry;
Step 3, electrolytic cleaning: copper alloy is put into electrolytic solution, at 60 ~ 80 DEG C, 1 ~ 5A/dm
2current density under, electrolysis 3 ~ 8s, containing sodium carbonate 20 ~ 30wt%, sodium phosphate 20 ~ 35wt%, tensio-active agent 0.5 ~ 1.5wt% and potassium hydroxide 5 ~ 15wt% in described electrolytic solution; After prewashing, cleaning, oven dry;
Step 4, pickling: soak 1 ~ 10 minute with the sulphuric acid soln of 3 ~ 5wt%, with water cleaning, dry.
2. copper alloy pretreatment process as claimed in claim 1, it is characterized in that, described tensio-active agent is Yelkin TTS type or amino acid type surfactant.
3. copper alloy pretreatment process as claimed in claim 1, it is characterized in that, the soak time in step 4 is 1 ~ 3 minute.
4. copper alloy pretreatment process as claimed in claim 1, it is characterized in that, described pre-washing lotion is by sodium carbonate 20 ~ 22 weight part, tall oil soap 5 ~ 6 weight part, sodium alkylarysulfonate 4 ~ 5 weight part, Starso 21 ~ 23 weight part, tripoly phosphate sodium STPP 18 ~ 20 weight part, alkylaryl Soxylat A 25-7 1.2 ~ 1.5 weight part, the water composition of potassium hydroxide 10 ~ 12 weight part and 110 ~ 120 weight parts.
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| CN201410510401.1A CN104264163A (en) | 2014-09-29 | 2014-09-29 | Copper alloy pretreatment method |
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| CN201410510401.1A CN104264163A (en) | 2014-09-29 | 2014-09-29 | Copper alloy pretreatment method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998007897A1 (en) * | 1996-08-22 | 1998-02-26 | Ronald Kempin | Prevention of marine encrustation on bronze propellers |
| CN101137768A (en) * | 2005-03-11 | 2008-03-05 | 日立化成工业株式会社 | Surface treatment method for copper and copper |
| CN104047005A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Method for removing oil of copper and copper alloy |
| CN104047008A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Copper cleaning process |
-
2014
- 2014-09-29 CN CN201410510401.1A patent/CN104264163A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998007897A1 (en) * | 1996-08-22 | 1998-02-26 | Ronald Kempin | Prevention of marine encrustation on bronze propellers |
| CN101137768A (en) * | 2005-03-11 | 2008-03-05 | 日立化成工业株式会社 | Surface treatment method for copper and copper |
| CN104047005A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Method for removing oil of copper and copper alloy |
| CN104047008A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Copper cleaning process |
Non-Patent Citations (2)
| Title |
|---|
| 沈宝亨等编著: "《现代制剂生产关键技术》", 31 October 2006, article ""乳剂"" * |
| 魏竹波等: "《金属清洗技术》", 31 August 2003, article ""已抛光的铜与铜合金的预处理"" * |
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