JPS639598B2 - - Google Patents
Info
- Publication number
- JPS639598B2 JPS639598B2 JP58187823A JP18782383A JPS639598B2 JP S639598 B2 JPS639598 B2 JP S639598B2 JP 58187823 A JP58187823 A JP 58187823A JP 18782383 A JP18782383 A JP 18782383A JP S639598 B2 JPS639598 B2 JP S639598B2
- Authority
- JP
- Japan
- Prior art keywords
- reflow
- pretreatment
- tinning
- bath
- pretreatment method
- 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
Links
- 238000002203 pretreatment Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000007853 buffer solution Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- ZRBROGSAUIUIJE-UHFFFAOYSA-N azanium;azane;chloride Chemical compound N.[NH4+].[Cl-] ZRBROGSAUIUIJE-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000011282 treatment Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
Description
〔発明の技術分野〕
この発明は、酸性錫めつき浴により錫めつきを
施した銅合金の条材を連続的にリフロー処理する
リフロー錫めつき法の前処理法に関するものであ
る。
〔従来技術〕
錫めつきを施した条材を連続的にリフロー処理
するリフロー錫めつき法として、錫めつき−水洗
−リフロー前処理−水洗−乾燥−加熱−冷却−乾
燥の各工程に経る方法がある。この方法では、脱
脂、酸洗等のめつき前処理および下地めつき等を
施した条材は、錫めつき工程において酸性浴によ
り錫めつきを施され、水洗加工を経た後、リフロ
ー前処理工程でリフロー前処理が施される。これ
に引き続き、水洗工程、乾燥工程の後、加熱工程
において適当な加熱装置によつて表面の錫めつき
被膜が加熱溶融され、冷却工程における冷却処理
により、溶融した錫が再び凝固し、乾燥工程を経
た後、製品となる。この一連の工程の中でリフロ
ー前処理工程が果たす役割は後続のリフロー処理
の安定化であつて、リフロー前処理を省略した場
合はリフロー錫めつきの光沢度が悪くなる。
従来、酸性錫めつき浴により錫めつきを施した
銅合金の条材をリフロー処理する方法において、
リフロー前処理方法としては第１表に示すものが
あつた。第１表のリフロー錫めつき法の前処理方
法における使用薬品であるリン酸三ナトリウム
（Na3PO4・12H2O）は白色の結晶であり、水に
対する溶解度は比較的低く、５％程度の水溶液で
白色懸濁状を呈する。
[Technical Field of the Invention] The present invention relates to a pretreatment method for reflow tinning, in which a copper alloy strip that has been tinned in an acidic tinning bath is continuously reflow treated. [Prior art] The reflow tinning method involves continuous reflow treatment of tinned strips, which involves the following steps: tinning, water washing, reflow pretreatment, water washing, drying, heating, cooling, and drying. There is a way. In this method, strips that have been subjected to pre-plating treatments such as degreasing and pickling, as well as base plating, are tin-plated in an acid bath in the tinning process, washed with water, and then subjected to reflow pre-treatment. Reflow pretreatment is performed during the process. Subsequently, after a water washing process and a drying process, the tin-plated coating on the surface is heated and melted by an appropriate heating device in a heating process, and the molten tin is solidified again by the cooling process in a cooling process, and the molten tin is solidified again in a drying process. After going through this process, it becomes a product. The role of the reflow pretreatment step in this series of steps is to stabilize the subsequent reflow treatment, and if the reflow pretreatment is omitted, the gloss of reflow tin plating will deteriorate. Conventionally, in a method of reflow processing a copper alloy strip that has been tinned in an acidic tinning bath,
As reflow pretreatment methods, there were those shown in Table 1. Trisodium phosphate (Na 3 PO 4 12H 2 O), which is the chemical used in the pretreatment method of the reflow tinning method shown in Table 1, is a white crystal and has a relatively low solubility in water, about 5%. It appears as a white suspension in an aqueous solution.
【表】【table】
この発明は従来のリフロー錫めつき法の前処理
方法におけるかかる欠点を除去する目的でなされ
たもので、リフロー前処理浴として塩化アンモニ
ウム−アンモニア緩衝溶液を用いることにより、
条材表面に処理薬品粒子を残さないリフロー錫め
つき法の前処理方法を提供するものである。
〔発明の実施例〕
以下、この発明の一実施例によるリフロー錫め
つき法の前処理方法について説明する。この発明
の一実施例によるリフロー錫めつき法の前処理方
法の詳細を第２表に示す。この実施例における使
用薬品である塩化アンモニウム（NH4Cl）およ
びアンモニア（NH4OH）はいずれも水に対する
溶解度が高く、浴組成を変化させることで任意の
PH（8.0〜11.0）の緩衝溶液をつくることができ
る。
This invention was made for the purpose of eliminating such drawbacks in the conventional reflow tinning pretreatment method, and by using an ammonium chloride-ammonia buffer solution as a reflow pretreatment bath,
The present invention provides a pretreatment method for reflow tinning that does not leave treatment chemical particles on the surface of a strip. [Embodiment of the Invention] Hereinafter, a pretreatment method for reflow tinning according to an embodiment of the present invention will be described. Details of the pretreatment method for reflow tinning according to an embodiment of the present invention are shown in Table 2. The chemicals used in this example, ammonium chloride (NH 4 Cl) and ammonia (NH 4 OH), both have high solubility in water, and can be used as desired by changing the bath composition.
A buffer solution with a pH of 8.0 to 11.0 can be created.
【表】【table】
以上説明したように、この発明によれば、リフ
ロー錫めつきの前処理浴として塩化アンモニウム
−アンモニア緩衝溶液を用いるようにしたので、
条材表面に処理薬品粒子を残すことがなく、これ
により設備の改造の必要なく、品質の安定したり
フロー処理を施すことができる。
As explained above, according to the present invention, since an ammonium chloride-ammonia buffer solution is used as a pretreatment bath for reflow tinning,
No processing chemical particles are left on the surface of the strip, which allows for stable quality and flow treatment without the need to modify equipment.
Claims (1)
を連続的に加熱溶融するリフロー錫めつき法の前
処理方法において、リフロー前処理浴として塩化
アンモニウム−アンモニア緩衝溶液を用いること
を特徴とするリフロー錫めつき法の前処理方法。 ２ リフロー前処理浴の浴温が常温であることを
特徴とする特許請求の範囲第１項記載のリフロー
錫めつき法の前処理方法。[Claims] 1. In a reflow tinning method pretreatment method in which a tinned copper alloy strip is continuously heated and melted in an acid bath, an ammonium chloride-ammonia buffer solution is used as a reflow pretreatment bath. A pretreatment method for reflow tinning, characterized by using. 2. The pretreatment method for reflow tinning according to claim 1, wherein the bath temperature of the reflow pretreatment bath is room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18782383A JPS6082692A (en) | 1983-10-07 | 1983-10-07 | Pretreatment for reflowing after tinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18782383A JPS6082692A (en) | 1983-10-07 | 1983-10-07 | Pretreatment for reflowing after tinning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6082692A JPS6082692A (en) | 1985-05-10 |
| JPS639598B2 true JPS639598B2 (en) | 1988-02-29 |
Family
ID=16212857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18782383A Granted JPS6082692A (en) | 1983-10-07 | 1983-10-07 | Pretreatment for reflowing after tinning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082692A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0349397U (en) * | 1989-09-19 | 1991-05-14 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5464869B2 (en) * | 2009-03-02 | 2014-04-09 | Ｄｏｗａメタルテック株式会社 | Sn-coated copper or copper alloy and method for producing the same |
| JP5464876B2 (en) * | 2009-03-17 | 2014-04-09 | Ｄｏｗａメタルテック株式会社 | Sn-coated copper or copper alloy and method for producing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5569287A (en) * | 1978-11-17 | 1980-05-24 | Kawasaki Steel Corp | Preventing method for white edge of tin plated steel plate |
-
1983
- 1983-10-07 JP JP18782383A patent/JPS6082692A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5569287A (en) * | 1978-11-17 | 1980-05-24 | Kawasaki Steel Corp | Preventing method for white edge of tin plated steel plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0349397U (en) * | 1989-09-19 | 1991-05-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6082692A (en) | 1985-05-10 |
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