CN1038351C - 聚氨酯磁性漆包圆铜线的制造工艺 - Google Patents

聚氨酯磁性漆包圆铜线的制造工艺 Download PDF

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CN1038351C
CN1038351C CN92112904A CN92112904A CN1038351C CN 1038351 C CN1038351 C CN 1038351C CN 92112904 A CN92112904 A CN 92112904A CN 92112904 A CN92112904 A CN 92112904A CN 1038351 C CN1038351 C CN 1038351C
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technique
copper wire
magnetic
plating
manufacturing
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CN1087137A (zh
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赵军行
姚言坤
顾照龙
张利民
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ZHEJIANG PROV METALLURG I
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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  • Electroplating Methods And Accessories (AREA)
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Abstract

聚氨酯磁性漆包线的制造工艺属于电化学技术领域的方法发明，本发明提供了电镀工艺及配方。制造工艺包括拉伸工艺、镀磁工艺和漆包工艺。电镀液工艺配方以硫酸镍、硫酸五铁、硼酸为主成分，操作条件较宽。产品广泛用于电子工业，特别适于制作延时线圈、中周线圈、滤波线圈，质量达到目前国际同类产品的先进水平。

Description

本发明属于电化学技术领域，特别是一种涉及用电镀方法在裸铜线表面均匀地外镀磁性薄膜的电镀工艺。
制造聚氨酯磁性漆包圆铜线的核心问题是磁性薄膜的镀制。目前，可用于金属导体表面外镀磁性薄膜的方法有真空镀膜、化学镀膜和电镀等几种。真空镀膜(包括热蒸发镀、低温溅射)和化学镀在膜层均匀性、整平性、结合力方面都不如电镀方法优越。在本发明所涉及的镍铁合金电镀工艺的技术范围内，经国际联机检索，尚未见有相同方法的专利文献记载。
本发明的目的是提供一种采用电镀方法制造聚氨酯磁性漆包圆铜线的生产工艺。这种工艺配方简单实用，操作条件较宽，所获得产品的主要技术指标达到了目前国际先进产品的水平。
本发明提供技术方案基本工艺流程如下：裸铜线—前处理—电镀—清洗—干燥—漆包工艺—成品。
这种聚氨酯磁性漆包圆铜线的制造工艺，主要由性薄膜镀磁工序和漆包工序两部分组成，其特征在于所述镀磁性薄膜工序使用含有：
硫酸镍     150～450克
硫酸亚铁   5～25克
硼酸       15～50克
电镀条件为：
pH值        2～3.5
温度        10～40℃
电流密度    1～40A/dm2
为防止镀液中的铁离子氧化成三价离子而沉淀，加入与铁离子有弱络合力的稳定剂，可以减弱电镀液老化。
拉伸工序是在自行制造裸铜线规格线材情况下安排的一项工艺。先将原料线材表面刨光，去除氧化皮，消除杂质、卷边、刮伤等缺陷，然后经过退火韧炼，以提高线材的塑性，保证拉制的裸铜线质量，减少拉伸过程中的断头率。通过不同规格的拉丝机拉制出需要线径的裸铜线。
经过拉伸后的裸铜线在进行镀磁前要进行清洁处理，即前处理。它有利于质量的控制。在电镀液中裸铜线作为阴极，阳极可采用镍铁合金材料制作。阳极上游离出镍、铁离子在阴极上不断淀积。
镀制完毕的磁性(软磁)裸铜线经过清洗和干燥后，转到漆包工艺段。
按照上述工艺配方与条件，在选定的控制时间下，影响镀层质量指标磁特性的主要工艺因素是镍、铁离子的浓度、电流密度、电镀液酸度镀层厚度也就随之确定。
漆包工艺过程采用常规的工艺，用漆包机来完成。
本发明提供的方法对保证聚氨酯磁性漆包圆铜线的正常生产和产品质量、效果均十分显著。
1.产品：采用本工艺制造的产品，其主要技术指标达到了同类产品的先进水平。在机械性能、热性能、电性能、化学性能以及几何尺寸外观方面均达到了设计和标准的要求，成品合格率达99％。
2.直焊性良好
在375±5℃的焊锡浴中定时检焊测试。锡焊时间小于3秒，表面光洁无残渣，合格率达98.5％。
3.高频特性良好
f-o特性指标达到了日本2Eu-FW磁性线的水平。在4MH2频率测定，o值大于46，合格率达80％，它特别适于制作延时线圈，周线圈，滤波线圈。
现结合附图作进一步说明。
图1是聚氨酯磁性漆包圆铜线制造工艺的流程框图。
图1中，成品裸铜线可以直接外购，也可以自行拉制。外购时必须符合GB6108的要求。裸铜线经前处理之后，引入电镀槽进行连续镀制，然后经过清洗、干燥和漆包工艺，最后成为成品。为了提高产品质量的稳定性，降低生产成本，在电镀和清洗工艺中还设置了电镀液的过滤回收流程，滤渣经中和后弃去。
由于工艺条件较宽，镀槽中的镀液可以按配方直接配置。镀液中加入与铁有弱络合力的物质作为稳定剂时还可防止沉淀析出。镀槽中的阳极镍与铁之比取8～12∶1，电流密度掌握在1～40A/DM2，镀液温度控制在10～40℃，pH值在2～3.5之间，镀制时间可以按产品镀层厚度的要求确定，分别控制在30～60秒之间，在规定时间内也可以通过镀槽长度和车速来适应。成品的磁性镀层厚度为1～2μ达到产品要求。
漆包工艺与常规的漆包圆铜线漆包工艺相同。
聚氨酯磁性漆包圆铜线的其它主要技术性能指标符合GB6109.4-85要求。

Claims (1)

1.一种在裸铜线导体材料上镀制镍铁合金磁性膜层而后包漆的聚氨酯磁性漆包圆铜线的制造工艺，主要由电镀工序和漆包工序两部分组成，其特征在于：所述电镀工序使用含硫酸镍150～450g/l水，硫酸亚铁5～25g/l水，硼酸15～50g/l水的电镀液，电镀条件为： pH值2.0～3.5，温度10～40℃，阳极为镍铁或镍铁合金，阴极电流密度为1～40A/DM2。
CN92112904A 1992-11-16 1992-11-16 聚氨酯磁性漆包圆铜线的制造工艺 Expired - Fee Related CN1038351C (zh)

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Publication number Priority date Publication date Assignee Title
CN106968004A (zh) * 2017-03-29 2017-07-21 浙江东尼电子股份有限公司 一种磁性材料的电镀工艺方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645857A (en) * 1969-05-28 1972-02-29 Ferroxcube Corp Method of making plated wire memory element
US3922209A (en) * 1974-08-20 1975-11-25 M & T Chemicals Inc Electrode position of alloys of nickel, cobalt or nickel and cobalt with iron and electrolytes therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645857A (en) * 1969-05-28 1972-02-29 Ferroxcube Corp Method of making plated wire memory element
US3922209A (en) * 1974-08-20 1975-11-25 M & T Chemicals Inc Electrode position of alloys of nickel, cobalt or nickel and cobalt with iron and electrolytes therefor

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