CN1021063C - 一种处理钢铁表面的钝化液 - Google Patents

一种处理钢铁表面的钝化液 Download PDF

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CN1021063C
CN1021063C CN 88109199 CN88109199A CN1021063C CN 1021063 C CN1021063 C CN 1021063C CN 88109199 CN88109199 CN 88109199 CN 88109199 A CN88109199 A CN 88109199A CN 1021063 C CN1021063 C CN 1021063C
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grams per
deactivation liquid
chromium
steel
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CN1043962A (zh
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杨延松
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/44—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

本发明属于一种处理钢铁表面的钝化液，其要点是将磷酸、酒石酸、N，N-二甲基甲酰胺、苯骈三氮唑、聚乙二醇、水于常温常压反应而成。按本发明制得的钝化液，无铬、无重金属盐及亚硝基等，无毒不污染环境，使用时间长、经济效益高，能满足对大生产和自动流水线中间传递过程中钢铁工件涂装前良好防锈膜的要求，适用各种涂装前上漆、喷漆、喷塑等工艺要求。工艺简单、使用方便。

Description

本发明属于一种处理钢铁表面的无铬钝化液。
目前在机械、纺织、电力、汽车、家用电器、变压器等制造厂中，对钢铁工件表面涂装前的酸洗、去氧化皮、磷化、钝化漆前工艺处理不一，有用硫酸、盐酸进行酸洗，除锈，有用去油、去锈、磷化、钝化一步法（所谓“四合一”）等工艺，如705酸洗、磷化液，磷化液76型，钢铁零件“除锈磷化”，及HP-2多功能金属清洗液等处理后都不能达到生产厂家的钢铁工件在涂装前工艺的要求和大生产和机械化、自动化流水线生产的要求，其原因是钢铁工件表面膜层干固慢（10～24小时），有白粉挂灰，及黑焦等不良表层造成的、要达到钢铁工件涂装前有良好的耐蚀性，能使涂层及镀层有强的附着力，延缓除锈后的工件不二次生锈，涂装缩短时间，一般需要进行钝化处理。目前大都采用铬酸盐（高铬、中铬、低铬）及五酸（硫酸、盐酸、磷酸、铬酸、硝酸）钝化液处理，给三废处理及排放带来困难，严重污染环境，对饮水及人体健康造成污染及危害。
本发明的目的在于获得一种无毒的无铬钝化液，解决干速快（2-5分钟），以满足钢铁工件经除油、除锈处理后的黑色金属表面的钝化处理的涂装前有良好的耐蚀性能，涂层、镀层具有强的附着力，并能延缓除锈后的工件不二次生锈，以便传递下道工序进行上漆涂装。缩短涂装时间，且解决铬盐及亚硝酸盐对人体的危害。
本发明的要点在于：
钝化液的配方为：
磷酸（85%）    7.18～18.67克/升
酒石酸    0.5～1.5克/升
N，N-二甲基甲酰胺    3.8～11.3克/升
苯骈三氮唑    0.4～1.5克/升
钼酸铵    0.3～1.0克/升
聚乙二醇（200～400＃） 0.56～4.5克/升
水    余量
钝化液的制备工艺为：按上述配方，于常温常压，用水分别将酒石酸及钼酸铵完全溶解后加入同一反应器中，加入磷酸，另用N，N-二甲基甲酰胺将苯并三氮唑完全溶解，加入上述反应器中，进行搅拌1～3分钟，最后加入聚乙二醇（200～400＃），按配比用水补齐，搅拌均匀，即得本发明的钝化液。
按本发明制得的新型钝化液，能使钢铁工件质量好，表面膜层干速快（2～5分钟）、膜层结合力强，是涂装前的良好底层。该钝化液使用寿命长，经济效益高，不含铬盐及重金属盐、亚硝基等有害致癌物，对人无毒，不污染环境，并满足大批量生产和自动化流水生产线中间传递过程中钢铁工件涂装漆前良好防锈膜，能适用于各种涂装前上漆、喷漆、喷塑等工艺要求。制备该钝化液工艺简单，使用方便。
实施例：
以制备1立升钝化液为例。
1.在常温常压，称取1克酒石酸放置于另一容器中，用水溶解，待完全溶解后加到一容器中。
2.称取0.5克钼酸铵放置于另一容器中，用水完全溶解后再加入上述容器中，然后，加入10毫升85%磷酸。
3.称取一克苯骈三氮唑于容器中，用5毫升N，N-二甲基甲酰胺溶解后，加入上述同一容器中，然后加进1～2毫升聚乙二醇（200～ 400＃），最后用水补至1000毫升，搅拌均匀，即得本发明所说的新型的无铬的钝化液。

Claims (1)

1、一种处理钢铁表面的钝化液，其特征在于它是由磷酸、酒石酸、N，N-二甲基甲酰胺、苯骈三氮唑、钼酸胺、聚乙二醇(200～400#)、水于常温常压下反应而成，该钝化液的组成配方为：
磷酸                 85%7.18～18.67克/升
酒石酸               0.5～1.5克/升
N，N-二甲基甲酰胺    3.8～11.3克/升
苯骈三氮唑           0.4～1.5克/升
钼酸铵               0.3～1.0克/升
聚乙二醇(200～400#)  0.56～4.5克/升
水                   余量
CN 88109199 1988-12-30 1988-12-30 一种处理钢铁表面的钝化液 Expired - Fee Related CN1021063C (zh)

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CN1021063C true CN1021063C (zh) 1993-06-02

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1058759C (zh) * 1995-08-30 2000-11-22 吕选忠 一种节能型低宽温快速磷化液
CN100425730C (zh) * 2006-09-21 2008-10-15 北京科技大学 一种金属锰防氧化钝化液及其使用方法
CN101353792B (zh) * 2007-07-27 2010-07-14 厦门市威士邦膜科技有限公司 一种无铬钝化液
CN101168642B (zh) * 2007-10-25 2011-05-11 武汉钢铁(集团)公司 冷轧无取向硅钢用环保型绝缘涂料及其涂层的制备方法
CN102296297B (zh) * 2011-08-12 2012-07-18 广州化学试剂厂 水性的金属防锈剂
CN103805981B (zh) * 2012-11-13 2017-05-31 比亚迪股份有限公司 一种镍钝化液及其制备方法和镍表面钝化的方法
CN104018169A (zh) * 2014-05-30 2014-09-03 鞍钢集团矿业公司 一种矿用汽车发动机冷却系统难溶水垢清洗液
CN107058994A (zh) * 2017-01-16 2017-08-18 东莞市原理产品质量检测有限公司 一种抗氧化、抗盐雾、防锈金属表面处理液
CN108031624A (zh) * 2017-12-22 2018-05-15 安徽戴家工艺有限公司 一种铁制产品的静电喷塑工艺
CN110318048B (zh) * 2019-07-25 2021-06-01 新华手术器械有限公司 一种不锈钢钝化剂及其制备方法、应用

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