CN107723724A - 一种空调***管路件酸洗钝化工艺 - Google Patents

一种空调***管路件酸洗钝化工艺 Download PDF

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CN107723724A
CN107723724A CN201710711383.7A CN201710711383A CN107723724A CN 107723724 A CN107723724 A CN 107723724A CN 201710711383 A CN201710711383 A CN 201710711383A CN 107723724 A CN107723724 A CN 107723724A
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黄宁松
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Chengdu Yicheng Mechanical And Electrical Engineering Co Ltd
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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
    • C23C22/24—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 hexavalent chromium compounds
    • 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
    • C23C22/73—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 characterised by the process
    • 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
    • C23C22/78—Pretreatment of the material to be coated
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/10—Other heavy metals
    • C23G1/103—Other heavy metals copper or alloys of copper
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/20—Other heavy metals

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

本发明涉及一种空调***管路件酸洗钝化工艺，属于空调***管路件技术领域，包括如下步骤：S1：先用不锈钢丝刷或砂轮清除毛刺；S2：将经过步骤S1处理后的空调***管路件放入碱洗液中；S3：用温水冲洗后对其充分烘干；S4：将烘干后的空调***管路件浸入温度为21℃‑60℃的酸洗液中；S5：用去离子水完全清洗后对其充分烘干；S6：在室温下，将空调***管路件浸入到钝化液中浸泡30‑60分钟；S7：用温水将空调***管路件表面冲洗干净。本发明的有益效果是：该处理方式操作简单，处理合理，且处理周期短，适合推广和普及，钝化液可重复使用，显著降低了生产成本。

Description

一种空调***管路件酸洗钝化工艺
技术领域
本发明涉及铜管表面处理技术领域，特别是涉及一种空调***管路件酸洗钝化工艺。
背景技术
冰箱***管路件绝大多数使用都是铜管，铜及铜合金焊接性能好、易加工、表面美观，目前已经成为工业用第二大金属材料，仅次于钢铁。铜及铜合金在航空航天、食品包装、建筑装饰、电子家电、交通运输等领域都有很广泛的应用。现有技术中，铜及铜合金在空气中极易容易氧化变黑，变黑后的铜管机械强度不好、不耐高温，抗腐蚀性差；现有技术的表面处理工艺较复杂，处理成本高，不适合广泛推广和利用。
发明内容
为解决上述技术问题，本发明采用的一个技术方案是：提供一种一种空调***管路件酸洗钝化工艺。
本发明的目的是通过以下技术方案来实现的：一种空调***管路件酸洗钝化工艺，包括如下步骤：
S1：先用不锈钢丝刷或砂轮清除毛刺，再将空调***管路件表面采用喷砂进行打磨处理，去除空调***管路件表面污垢及氧化层；
S2：将经过步骤S1处理后的空调***管路件放入碱洗液中，碱洗液是浓度为3%-5%的NaOH溶液，温度为50℃-70℃，持续时间为30-60秒；
S3：用温水冲洗后对其充分烘干；
S4：将烘干后的空调***管路件浸入温度为21℃-60℃的酸洗液中，持续时间为15-30分钟；
S5：用去离子水完全清洗后对其充分烘干；
S6：在室温下，将空调***管路件浸入到钝化液中浸泡30-60分钟；
S7：用温水将空调***管路件表面冲洗干净，然后用酸性石蕊试纸测试冲洗面，PH值为6.5-7.5之间即可，最后用压缩空气吹干。
优选地，所述酸洗液是由15%-20%的硝酸和3%-8%的氢氟酸配置而成的溶液。
优选地，所述钝化液是由3%-8%的硝酸以及1-6g/100ml的重铬酸钾配置而成的溶液。
优选地，所述喷砂使用的砂为纯硅或氧化铝。
本发明的有益效果是：本发明对空调***管路件采用碱洗方式将表面油污去除，最终进行钝化处理，使得空调***管路件获得较高的抗腐蚀性能，提高空调***管路件的实用性能，该处理方式操作简单，处理合理，且处理周期短，适合推广和普及，钝化液可重复使用，显著降低了生产成本。
具体实施方式
下面对本发明做进一步的描述，但本发明的保护范围不局限于以下所述。
实施例1
一种空调***管路件酸洗钝化工艺，包括如下步骤：
S1：先用不锈钢丝刷或砂轮清除毛刺，再将空调***管路件表面采用喷砂进行打磨处理，去除空调***管路件表面污垢及氧化层；
S2：将经过步骤S1处理后的空调***管路件放入碱洗液中，碱洗液是浓度为3.5%的NaOH溶液，温度为55℃，持续时间为35秒；
S3：用温水冲洗后对其充分烘干；
S4：将烘干后的空调***管路件浸入温度为30℃的酸洗液中，持续时间为25分钟；
S5：用去离子水完全清洗后对其充分烘干；
S6：在室温下，将空调***管路件浸入到钝化液中浸泡35分钟；
S7：用温水将空调***管路件表面冲洗干净，然后用酸性石蕊试纸测试冲洗面，PH值为6.8，最后用压缩空气吹干。
钝化处理后的空调***管路件呈以玫瑰红为主的彩虹色，取同批处理的试块做硝酸溶液点滴实验，所述的硝酸溶液为50%的硝酸溶液，耐蚀时间为8秒，空调***管路件钝化处理合格。
实施例2
一种空调***管路件酸洗钝化工艺，包括如下步骤：
S1：先用不锈钢丝刷或砂轮清除毛刺，再将空调***管路件表面采用喷砂进行打磨处理，去除空调***管路件表面污垢及氧化层；
S2：将经过步骤S1处理后的空调***管路件放入碱洗液中，碱洗液是浓度为4%的NaOH溶液，温度为60℃，持续时间为45秒；
S3：用温水冲洗后对其充分烘干；
S4：将烘干后的空调***管路件浸入温度为50℃的酸洗液中，持续时间为20分钟；
S5：用去离子水完全清洗后对其充分烘干；
S6：在室温下，将空调***管路件浸入到钝化液中浸泡45分钟；
S7：用温水将空调***管路件表面冲洗干净，然后用酸性石蕊试纸测试冲洗面，PH值为7.2，最后用压缩空气吹干。
钝化处理后的空调***管路件呈以玫瑰红为主的彩虹色，取同批处理的试块做硝酸溶液点滴实验，所述的硝酸溶液为50%的硝酸溶液，耐蚀时间为10秒，空调***管路件钝化处理合格。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，在本发明的精神和原则内可以有各种更改和变化，这些等同的变型或替换等，均包含在本发明的保护范围之内。

Claims (4)

1.一种空调***管路件酸洗钝化工艺，其特征在于：包括如下步骤：
S1：先用不锈钢丝刷或砂轮清除毛刺，再将空调***管路件表面采用喷砂进行打磨处理，去除空调***管路件表面污垢及氧化层；
S2：将经过步骤S1处理后的空调***管路件放入碱洗液中，碱洗液是浓度为3%-5%的NaOH溶液，温度为50℃-70℃，持续时间为30-60秒；
S3：用温水冲洗后对其充分烘干；
S4：将烘干后的空调***管路件浸入温度为21℃-60℃的酸洗液中，持续时间为15-30分钟；
S5：用去离子水完全清洗后对其充分烘干；
S6：在室温下，将空调***管路件浸入到钝化液中浸泡30-60分钟；
S7：用温水将空调***管路件表面冲洗干净，然后用酸性石蕊试纸测试冲洗面，PH值为6.5-7.5之间即可，最后用压缩空气吹干。
2.根据权利要求1所述的空调***管路件酸洗钝化工艺，其特征在于：所述酸洗液是由15%-20%的硝酸和3%-8%的氢氟酸配置而成的溶液。
3.根据权利要求1所述的空调***管路件酸洗钝化工艺，其特征在于：所述钝化液是由3%-8%的硝酸以及1-6g/100ml的重铬酸钾配置而成的溶液。
4.根据权利要求1所述的空调***管路件酸洗钝化工艺，其特征在于：所述喷砂使用的砂为纯硅或氧化铝。
CN201710711383.7A 2017-08-18 2017-08-18 一种空调***管路件酸洗钝化工艺 Withdrawn CN107723724A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109609938A (zh) * 2018-12-06 2019-04-12 苏州康索机电有限公司 一种铸件表面钝化的方法
CN110479693A (zh) * 2019-08-15 2019-11-22 安徽省矿业机电装备有限责任公司 一种通液管内孔表面处理工艺
CN115572979A (zh) * 2022-10-08 2023-01-06 景德镇华信航空科技装备有限公司 一种航空零部件表面处理工艺及装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109609938A (zh) * 2018-12-06 2019-04-12 苏州康索机电有限公司 一种铸件表面钝化的方法
CN110479693A (zh) * 2019-08-15 2019-11-22 安徽省矿业机电装备有限责任公司 一种通液管内孔表面处理工艺
CN115572979A (zh) * 2022-10-08 2023-01-06 景德镇华信航空科技装备有限公司 一种航空零部件表面处理工艺及装置
CN115572979B (zh) * 2022-10-08 2024-05-03 景德镇华信航空科技装备有限公司 一种航空零部件表面处理工艺及装置

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