CN1167830C - Brass surface treatment process for resisting atmospheric corrosion - Google Patents
Brass surface treatment process for resisting atmospheric corrosion Download PDFInfo
- Publication number
- CN1167830C CN1167830C CNB001230654A CN00123065A CN1167830C CN 1167830 C CN1167830 C CN 1167830C CN B001230654 A CNB001230654 A CN B001230654A CN 00123065 A CN00123065 A CN 00123065A CN 1167830 C CN1167830 C CN 1167830C
- Authority
- CN
- China
- Prior art keywords
- coating
- room temperature
- objects
- surface treatment
- grams per
- 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.)
- Expired - Fee Related
Links
- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 20
- 239000010951 brass Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007797 corrosion Effects 0.000 title claims abstract description 9
- 238000005260 corrosion Methods 0.000 title claims abstract description 9
- 238000004381 surface treatment Methods 0.000 title claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 238000002161 passivation Methods 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 230000009849 deactivation Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 16
- 239000000126 substance Substances 0.000 description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 238000006388 chemical passivation reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000001915 surface Penning-ionisation electron spectroscopy Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a corrosion resistance technique, particularly to a brass surface treatment method for resisting atmospheric corrosion. The present invention is characterized in that after passivation treatment, coating treatment is carried out to objects which are provided with deactivation bottom layers; the coating treatment comprises the following steps: organic coating materials are sprayed and coated for one to four times on the objects; every two times are carried out in the interval of 24 to 48 hours; airing is carried out at room temperature; then, the sprayed and coated objects are put in a baking oven at the temperature of 100 to 120 DEGC to preserve heat for one to three hours, and then, the objects are baked; finally, the objects are cooled at the room temperature. Compared with the existing other brass surface treatment methods, the present invention has the advantages of no pollution for the environment and no harm to operators' health; the present invention is a treatment method which can obtain ideal protective effects.
Description
The present invention relates to aseptic technic, specifically a kind of brass surface treatment process for resisting atmospheric corrosion.
Brass is one of common metal in the atmosphere.If do not take anticorrosive measure, the brass variable color of in atmosphere, getting rusty very soon inevitably.Continue to use brass passivating technique in the past, also can reach indoor rot-resistant purpose in a short time.But can not satisfy long-term rot-resistant requirement also limited by environmental protection because of passivation has carcinogenic composition.Generally adopt method to prevent the corrosion of brass outside atmosphere at brass surfaces brush layer of transparent coating.But this method preservative effect in a short time is apparent in view, and brass surfaces began variable color in general two months, the longlyest adheres to 1 year, does not satisfy the needs of people to the anticorrosion life-span of brass far away.This method effectively the rot-resistant major cause be organic coating can not with brass surfaces closely with firm combining.
The objective of the invention is to provide a kind of treatment process that makes brass in atmosphere, have longer preservative effect.
The present invention is primarily aimed at the means of defence that the more serious city atmospheric environment of pollution provides a chemical passivation to combine with coating.Chemical deactivation process can make brass surfaces produce fine and close passive film can prevent effectively that brass from corroding indoor, has applied for and obtained national patent, and the patent No. is ZL86103910.6.
Carry out chemical passivation earlier by above-mentioned patent technology, schedule of operation is: alkali cleaning → washing → pickling → washing → bright dipped finish (chemical rightenning) → washing → pre-passivation → washing → passivation → washing → hot water wash → dry up or dry.
Alkaline wash is the aqueous solution of commercial metals washing composition or uses other alkaline wash.
Pickle solution composition and processing condition
| Composition | Scope | Optimum value |
| H 2SO 4(d=1.84 technical pure) | ＜120 grams per liters | 80 grams per liters |
| Sulphur urine (technical pure) | ＜15 grams per liters | 10 grams per liters |
| Temperature | 50～70℃ | 60℃ |
| Time | 1～8 minute | 5 minutes |
Bright dipped finish (chemical rightenning) liquid composition and processing condition
Prescription 1
| Composition | Scope | Optimum value |
| H 3PO 4(dense industry) | ＜450CC/ liter | The 400CC/ liter |
| HAC (dense industry) | ＜200CC/ liter | The 100CC/ liter |
| H 2O 2(30% industry) | ＜350CC/ liter | The 300CC/ liter |
| Temperature | Room temperature | Room temperature |
| Time | 30 seconds～5 minutes | 1～2 minute |
Prescription 2
| Composition | Scope | Optimum value |
| NaOH (industry) | ＜30 grams per liters | 15 grams per liters |
| H 2O 2(30% industry) | ＜300CC/ liter | The 150CC/ liter |
| Oxalic acid (industry) | ＜50 grams per liters | 35 grams per liters |
| BTA (chemical pure) | ＜1 grams per liter | 0.1～0.2 grams per liter |
| Temperature | Room temperature～60 ℃ | 40～50℃ |
| Time | 1～6 minute | 1～2 minute |
Pre-passivating solution composition and processing condition
| Composition | Scope | Optimum value |
| CrO 3 | 0.5～5 grams per liters | 1 grams per liter |
| Temperature | Room temperature～50 ℃ | 15～25℃ |
| Time | 30 seconds～3 minutes | 1～minute |
Passivating solution composition and processing condition (adopting one of following three prescriptions)
One-component---benzotriazole (BTA)
| Composition | Scope | Optimum value |
| BTA (chemical pure) | 3～15 grams per liters | 5 grams per liters |
| Temperature | Room temperature～70 ℃ | 60～65℃ |
| Time | 3～20 minutes | 5～15 minutes |
One-component---polyvinyl alcohol (PVA)
| Composition | Scope | Optimum value |
| PVA (chemical pure) | 1～15 grams per liter | 5 grams per liters |
| Temperature | Room temperature～75 ℃ | 65～70℃ |
| Time | 3～20 minutes | 5 minutes |
The BTA+PVA blending ingredients
| Composition | Scope | Optimum value |
| BTA+PVA | Each 1～15 grams per liter | Each 5 grams per liter |
| Temperature | 50～70℃ | 65℃ |
| Time | 3～20 minutes | 10 minutes |
Passivating solution is clean with flushing with clean water, and room temperature is dried.
The object that technical characterictic of the present invention is to have after the Passivation Treatment passivation bottom carries out coating again to be handled, it is that organic coating is sprayed on object 1～4 time that said coating is handled, each 24～48 hours at interval, room temperature is dried, to be put into 100～120 ℃ of baking ovens by the spraying object then and be incubated oven dry in 1～3 hour, the room temperature cooling.
Compare with existing other brass surfaces treatment process, present method be a kind of both free from environmental pollution, not harm operator healthy, can obtain the treatment process of desirable protection effect again.Flat at the board that the flat society of certain board makes, be hung on same place, beginning variable color in two months, all blackening after five months with the board among the embodiment is flat.And nearly 5 years of the flat exposure of handling with present technique of board, obfuscation blackout, still light is as before so far.The combination of this chemical passivation film and coating can fully completely cut off the infiltration of the objectionable impuritiess such as water molecules, oxygen and sulfurous gas in the atmosphere, makes the brass surfaces corrosion, reaches more satisfactory long-term outdoor requirement for anticorrosion.
Embodiment
The flat atmospheric corrosion resistance surface treatment of brass board:
1. Passivation Treatment
Alkali cleaning
| Composition | Concentration | Temperature, time |
| NaOH (technical pure) | 10 grams per liters | 80 ℃ 5 minutes |
| Na 2CO 3(technical pure) | 20 grams per liters | |
| Na 3PO 4(technical pure) | 20 grams per liters |
Pickling
| Composition | Concentration | Temperature, time |
| H 2SO 4(dense, technical pure) | 80 milliliters/liter | 60 ℃, 5 minutes |
| Sulphur urine (technical pure) | 10 grams per liters |
Bright dipped finish
| Composition | Concentration | Temperature, time |
| H 3PO 4(dense, technical pure) | 350 milliliters/liter | Room temperature, 2 minutes |
| HAC (dense, technical pure) | 150 milliliters/liter | |
| H 2O 4(30% technical pure) | 300 milliliters/liter |
Rare chromic acid is handled
CrO
3(chemical pure) 1 grams per liter room temperature 1 minute
BTA handles
60 ℃ of BTA (chemical pure) 5 grams per liters 10 minutes
PVA handles
65 ℃ of PVA (chemical pure) 5 grams per liters 10 minutes
2. coating is handled
Spray material
No. 3363 coating (acrylic coating) of selecting for use German SPIES HECKER company to produce by the operation instruction mixed, fully filter principal constituent and thinner and solidifying agent after the stirring.Trump card is flat to be put, and sprays.Spraying back room temperature is dried for the first time, carries out the spraying second time after 24 hours, and room temperature is dried.
Oven dry is handled
With the flat baking oven of putting into of copper, be warming up to 100 ℃ and be incubated 2 hours.Stove is chilled to room temperature.
Said organic coating is fluorine coating, acrylic coating, synthetic resin coating.
Claims (1)
1. brass surface treatment process for resisting atmospheric corrosion, the object that it is characterized in that having after the Passivation Treatment passivation bottom carries out coating again to be handled, it is that organic coating fluorine coating, acrylic coating or synthetic resin coating are sprayed on object 1～4 time that said coating is handled, each 24～48 hours at interval, room temperature is dried, to be put into 100～120 ℃ of baking ovens by the spraying object then and be incubated oven dry in 1～3 hour, the room temperature cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001230654A CN1167830C (en) | 2000-10-12 | 2000-10-12 | Brass surface treatment process for resisting atmospheric corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001230654A CN1167830C (en) | 2000-10-12 | 2000-10-12 | Brass surface treatment process for resisting atmospheric corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1349006A CN1349006A (en) | 2002-05-15 |
| CN1167830C true CN1167830C (en) | 2004-09-22 |
Family
ID=4589545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001230654A Expired - Fee Related CN1167830C (en) | 2000-10-12 | 2000-10-12 | Brass surface treatment process for resisting atmospheric corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1167830C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449139A (en) * | 2014-12-01 | 2015-03-25 | 廊坊师范学院 | Copper and copper alloy surface passivation coating and preparation method thereof |
| CN115120028B (en) * | 2022-07-13 | 2024-01-30 | 东莞市凤仪堂化妆用具有限公司 | Copper pipe cosmetic brush and preparation method thereof |
-
2000
- 2000-10-12 CN CNB001230654A patent/CN1167830C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1349006A (en) | 2002-05-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |