WO2019000448A1 - Stainless steel passivator and method for passivating surface of stainless steel part - Google Patents
Stainless steel passivator and method for passivating surface of stainless steel part Download PDFInfo
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- WO2019000448A1 WO2019000448A1 PCT/CN2017/091304 CN2017091304W WO2019000448A1 WO 2019000448 A1 WO2019000448 A1 WO 2019000448A1 CN 2017091304 W CN2017091304 W CN 2017091304W WO 2019000448 A1 WO2019000448 A1 WO 2019000448A1
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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
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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
Definitions
- the present invention relates to the field of metal surface treatment technology, and in particular to a stainless steel passivating agent and a surface passivation treatment method for stainless steel parts.
- the surface treatment technology of the workpiece is usually applied.
- the surface treatment of aluminum, iron, zinc and their alloys goes deep into all walks of life.
- most of the work needs to be pretreated before surface treatment, for example, cleaning, decontamination and degreasing, and some applications of stainless steel workpieces need to be passivated.
- the passivation treatment agent pretreats the stainless steel workpiece to form a passivation film layer on the surface of the stainless steel workpiece, which increases the corrosion resistance of the subsequent film and the bonding force between the coating and the stainless steel workpiece.
- existing stainless steel passivated workpieces have insufficient performance in terms of corrosion resistance and coating adhesion, and some stainless steels cannot even be painted.
- a stainless steel passivating agent having good corrosion resistance and adhesion, and a method for treating the surface of a stainless steel member are provided.
- a stainless steel passivating agent for forming a film on a surface of a stainless steel workpiece comprising 1000 parts by weight, including the following parts by weight: 5-20 parts of zinc nitrate, 3-15 parts of dihydrogen phosphate, 2 - 10 parts sodium molybdate, 0.5-3 parts thiourea, 0.1-1.0 parts citric acid, the balance being deionized water.
- a method for surface passivation treatment of a stainless steel member comprising the steps of: preparing a stainless steel passivator as described above; immersing the stainless steel workpiece in a passivating solution, and washing the stainless steel workpiece after a predetermined daytime treatment , dry.
- the passivation film layer formed by the above stainless steel passivating agent has good corrosion resistance and good adhesion between the coating layers.
- Embodiments of the present invention provide a stainless steel passivating agent for surface pretreatment of a stainless steel workpiece, comprising 1000 parts by weight, including the following parts by weight: 5-20 parts of zinc nitrate, 3-15 parts of phosphoric acid Hydroquinone, 2-10 parts sodium molybdate, 0.5-3 parts thiourea, 0.1-1.0 parts citric acid, the balance being deionized water.
- the zinc nitrate is preferably 10-20 parts by weight.
- the dihydrogen phosphate is 5-15 parts by weight
- the sodium molybdate is 4-10 parts by weight
- the thiourea is 1-3 parts by weight
- the citric acid The parts by weight are 0.4-1.0 parts.
- a preferable film forming effect is achieved by controlling the balance of the respective distribution ratios. For example, if the ratio of zinc nitrate to dihydrogen phosphate is too large, the film layer is too thin or cannot be formed into a film, and if the reaction is too fast, the film formation is too fast and the film is not sufficiently strong.
- zinc nitrate and dihydrogen phosphate are the main components of the film to protect the stainless steel from corrosion.
- Sodium molybdate is used as a promoter to promote the formation of the film. If too much film is added, it will loosen and fall off. The layer formation is too long or cannot form a film. Thiourea can increase the corrosion resistance of the film, and citric acid makes the reaction uniform.
- the passivation film formed of the stainless steel passivating agent has excellent corrosion resistance and adhesion.
- Embodiments of the present invention also provide a method for surface passivation treatment of a stainless steel member, comprising the steps of: preparing a stainless steel passivating agent as described above; immersing the stainless steel workpiece in a passivating solution, after a predetermined daytime treatment , Wash stainless steel workpiece, dry.
- the passivating agent solution is controlled to be weakly acidic. Passivation treatment, stainless steel passivator temperature control at room temperature -40 ° C, such as 20 - 40 ° C.
- the stainless steel workpiece is preferably immersed in the crucible solution for a period of 2 to 10 minutes.
- stainless steel 304 is taken as an example.
- the components are mixed according to the following parts by weight: 5 parts of zinc nitrate, 3 parts of dihydrogen phosphate, 2 parts of sodium molybdate, 0.5 parts of thiourea, 0.1 part of citric acid, and the balance is 1000 parts by weight Ionic water, stirring, mixing evenly , formulated as a passivating agent.
- Treatment method preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, after treating at a temperature of 40 ° C for 10 minutes, washing the stainless steel workpiece and drying.
- the salt spray was tested for more than 200 hours by a neutral salt spray test, and the adhesion test was carried out according to the adhesion test of 2 hours of boiling water after the spray treatment, and the adhesion was evaluated to Grade 1.
- the components are mixed according to the following parts by weight: 1000 parts by weight, 10 parts of zinc nitrate, 6 parts of dihydrogen phosphate, 4 parts of sodium molybdate, 1 part of thiourea, 0.3 parts of citric acid, the balance is Ionic water, stirred, evenly mixed, formulated as a passivating agent.
- Treatment method preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, after treating at a temperature of 40 ° C for 10 minutes, washing the stainless steel workpiece and drying.
- the salt spray was passed through a neutral salt spray test for more than 300 hours, and after the spray treatment, the adhesion test was carried out according to 2 hours of boiling water adhesion, and the adhesion was evaluated as 1 grade.
- the components are mixed according to the following parts by weight: 1000 parts by weight, 15 parts of zinc nitrate, 12 parts of dihydrogen phosphate, 7 parts of sodium molybdate, 2 parts of thiourea, 0.7 parts of citric acid, the balance is Ionic water, stirred, evenly mixed, formulated as a passivating agent.
- Treatment method preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, and after washing at a temperature of 35 ° C for 10 minutes, the stainless steel workpiece is washed and dried.
- the salt spray was tested for more than 600 hours after the neutral salt spray test, and the adhesion test was carried out according to the adhesion test of 2 hours of boiling water after the spray coating treatment, and the adhesion was evaluated to grade 0.
- the components are mixed according to the following parts by weight: 1000 parts by weight, 20 parts of zinc nitrate, 15 parts of dihydrogen phosphate, 10 parts of sodium molybdate, 3 parts of thiourea, 1 part of citric acid, the balance is Ionic water, stirred, evenly mixed, formulated as a passivating agent.
- Processing method preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, and after washing at a temperature of 35 ° C for 10 minutes, the stainless steel workpiece is washed and dried.
Abstract
A stainless steel passivator and a method for passivating the surface of a stainless steel part. The stainless steel passivator is used for treating the surface of a stainless steel work piece and comprises the following components in 1000 parts by weight: 5-20 parts of zinc nitrate, 3-15 parts of barium dihydrogen phosphate, 2-10 parts of sodium molybdate, 0.5-3 parts of thiourea, 0.1-1.0 parts of citric acid and the balance of deionized water. A passivation film layer formed by the stainless steel passivator has good corrosion resistance and abrasion resistance, as well as good binding force.
Description
不锈钢钝化剂及不锈钢件表面钝化处理方法 Stainless steel passivation agent and surface passivation treatment method for stainless steel parts
技术领域 Technical field
[0001] 本发明涉及金属表面处理技术领域， 具体涉及一种不锈钢钝化剂及不锈钢件表 面钝化处理方法。 [0001] The present invention relates to the field of metal surface treatment technology, and in particular to a stainless steel passivating agent and a surface passivation treatment method for stainless steel parts.
背景技术 Background technique
[0002] 为提高产品表面性能或者外观， 通常对工件表面处理技术。 例如， 铝、 铁、 锌 及其合金的表面处理工艺深入各行各业中。 而且， 大多数工作在进行表面处理 前还需要经过预处理， 例如， 进行清洗， 除污除油， 某些用途的不锈钢工件还 需要进行钝化处理。 [0002] In order to improve the surface properties or appearance of a product, the surface treatment technology of the workpiece is usually applied. For example, the surface treatment of aluminum, iron, zinc and their alloys goes deep into all walks of life. Moreover, most of the work needs to be pretreated before surface treatment, for example, cleaning, decontamination and degreasing, and some applications of stainless steel workpieces need to be passivated.
[0003] 钝化处理剂对不锈钢工件进行预处理， 以在不锈钢工件表面形成钝化膜层， 增 加后续膜的防腐力以及涂层和不锈钢工件的结合力。 然而， 现有的不锈钢钝化 工件耐腐蚀性和涂层附着力方面表现不足， 有些不锈钢甚至不能涂装。 [0003] The passivation treatment agent pretreats the stainless steel workpiece to form a passivation film layer on the surface of the stainless steel workpiece, which increases the corrosion resistance of the subsequent film and the bonding force between the coating and the stainless steel workpiece. However, existing stainless steel passivated workpieces have insufficient performance in terms of corrosion resistance and coating adhesion, and some stainless steels cannot even be painted.
技术问题 technical problem
[0004] 有鉴于此， 提供一种耐蚀性和附着力好的不锈钢钝化剂， 以及不锈钢件表面钝 化处理方法。 In view of the above, a stainless steel passivating agent having good corrosion resistance and adhesion, and a method for treating the surface of a stainless steel member are provided.
问题的解决方案 Problem solution
技术解决方案 Technical solution
[0005] 一种不锈钢钝化剂， 用于在不锈钢工件表面形成皮膜， 以 1000重量份计， 包括 如下重量份数的成分： 5-20份硝酸锌， 3-15份磷酸二氢钡， 2-10份钼酸钠， 0.5-3 份硫脲， 0.1-1.0份柠檬酸， 余量为去离子水。 [0005] A stainless steel passivating agent for forming a film on a surface of a stainless steel workpiece, comprising 1000 parts by weight, including the following parts by weight: 5-20 parts of zinc nitrate, 3-15 parts of dihydrogen phosphate, 2 - 10 parts sodium molybdate, 0.5-3 parts thiourea, 0.1-1.0 parts citric acid, the balance being deionized water.
[0006] 以及， 一种不锈钢件表面钝化处理方法， 其包括下列步骤： 配制如上所述的不 锈钢钝化剂； 将不锈钢工件浸入钝化剂溶液中， 经过预定吋间处理后， 水洗不 锈钢工件， 干燥。 [0006] Also, a method for surface passivation treatment of a stainless steel member, comprising the steps of: preparing a stainless steel passivator as described above; immersing the stainless steel workpiece in a passivating solution, and washing the stainless steel workpiece after a predetermined daytime treatment , dry.
发明的有益效果 Advantageous effects of the invention
有益效果 Beneficial effect
[0007] 上述不锈钢钝化剂形成的钝化膜层耐腐蚀性好， 和涂层之间具有良好的结合力
本发明的实施方式 [0007] The passivation film layer formed by the above stainless steel passivating agent has good corrosion resistance and good adhesion between the coating layers. Embodiments of the invention
[0008] 以下将结合具体实施例对本发明进行详细说明。 The invention will be described in detail below with reference to specific embodiments.
[0009] 本发明实施例提供一种不锈钢钝化剂， 用于不锈钢工件表面预处理， 以 1000重 量份计， 包括如下重量份数的成分： 5-20份硝酸锌， 3-15份磷酸二氢钡， 2-10份 钼酸钠， 0.5-3份硫脲， 0.1-1.0份柠檬酸， 余量为去离子水。 [0009] Embodiments of the present invention provide a stainless steel passivating agent for surface pretreatment of a stainless steel workpiece, comprising 1000 parts by weight, including the following parts by weight: 5-20 parts of zinc nitrate, 3-15 parts of phosphoric acid Hydroquinone, 2-10 parts sodium molybdate, 0.5-3 parts thiourea, 0.1-1.0 parts citric acid, the balance being deionized water.
[0010] 具体地， 所述硝酸锌的重量份数优选为 10-20份。 优选地， 所述磷酸二氢钡的 重量份数为 5-15份， 钼酸钠的重量份数为 4-10份， 所述硫脲的重量份数为 1-3份 ， 所述柠檬酸的重量份数为 0.4-1.0份。 [0010] Specifically, the zinc nitrate is preferably 10-20 parts by weight. Preferably, the dihydrogen phosphate is 5-15 parts by weight, the sodium molybdate is 4-10 parts by weight, and the thiourea is 1-3 parts by weight, the citric acid The parts by weight are 0.4-1.0 parts.
[0011] 在上述不锈钢钝化剂中， 通过控制各成分配比平衡， 以达到较佳成膜效果。 例 如， 硝酸锌和磷酸二氢钡比例过大则膜层过薄或者不能成膜， 反之则反应过快 导致成膜过快且膜不够牢固。 其中硝酸锌和磷酸二氢钡作为成膜的主要成分保 护不锈钢件不受腐蚀， 钼酸钠作为促进剂促进膜的生成应合理加入， 假若加入 过多生成的膜会疏松脱落， 过少则膜层形成吋间太长或者不能成膜。 硫脲可以 增加膜层的耐蚀性， 柠檬酸使反应均匀。 [0011] In the above stainless steel passivating agent, a preferable film forming effect is achieved by controlling the balance of the respective distribution ratios. For example, if the ratio of zinc nitrate to dihydrogen phosphate is too large, the film layer is too thin or cannot be formed into a film, and if the reaction is too fast, the film formation is too fast and the film is not sufficiently strong. Among them, zinc nitrate and dihydrogen phosphate are the main components of the film to protect the stainless steel from corrosion. Sodium molybdate is used as a promoter to promote the formation of the film. If too much film is added, it will loosen and fall off. The layer formation is too long or cannot form a film. Thiourea can increase the corrosion resistance of the film, and citric acid makes the reaction uniform.
[0012] 本实施例中， 不锈钢钝化剂形成的钝化膜具有优良的耐腐蚀性和附着性。 [0012] In this embodiment, the passivation film formed of the stainless steel passivating agent has excellent corrosion resistance and adhesion.
[0013] 本发明实施例还提供一种不锈钢件表面钝化处理方法， 其包括下列步骤： 配制 如上所述的不锈钢钝化剂； 将不锈钢工件浸入钝化剂溶液中， 经过预定吋间处 理后， 水洗不锈钢工件， 干燥。 [0013] Embodiments of the present invention also provide a method for surface passivation treatment of a stainless steel member, comprising the steps of: preparing a stainless steel passivating agent as described above; immersing the stainless steel workpiece in a passivating solution, after a predetermined daytime treatment , Wash stainless steel workpiece, dry.
[0014] 具体地， 在不锈钢工件浸入钝化剂溶液吋， 控制钝化剂溶液的为弱酸性。 钝化 处理吋， 不锈钢钝化剂温度控制在常温 -40°C， 如 20 - 40°C。 不锈钢工件浸入钝 化剂溶液的吋间优选为 2-10分钟。 [0014] Specifically, after the stainless steel workpiece is immersed in the passivating agent solution, the passivating agent solution is controlled to be weakly acidic. Passivation treatment, stainless steel passivator temperature control at room temperature -40 ° C, such as 20 - 40 ° C. The stainless steel workpiece is preferably immersed in the crucible solution for a period of 2 to 10 minutes.
[0015] 以下通过具体实例说明本发明实施例的不锈钢钝化剂及其钝化处理方法等方面[0015] Hereinafter, the stainless steel passivating agent and its passivation treatment method of the embodiment of the invention are described by way of specific examples.
， 一下实例均以不锈钢 304为例。 For the following examples, stainless steel 304 is taken as an example.
[0016] 实施例 1 Embodiment 1
[0017] 按照下列重量份数混合各成分： 以 1000重量分数计， 5份硝酸锌， 3份磷酸二氢 钡， 2份钼酸钠， 0.5份硫脲， 0.1份柠檬酸， 余量为去离子水， 搅拌， 混合均匀
， 配制成钝化剂。 [0017] The components are mixed according to the following parts by weight: 5 parts of zinc nitrate, 3 parts of dihydrogen phosphate, 2 parts of sodium molybdate, 0.5 parts of thiourea, 0.1 part of citric acid, and the balance is 1000 parts by weight Ionic water, stirring, mixing evenly , formulated as a passivating agent.
[0018] 处理方法： 配制好不锈钢钝化剂； 将不锈钢件浸入钝化剂溶液中， 在 40°C温度 下， 经过 10分钟处理后， 水洗不锈钢工件， 干燥。 [0018] Treatment method: preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, after treating at a temperature of 40 ° C for 10 minutes, washing the stainless steel workpiece and drying.
[0019] 经过上述钝化剂溶液处理后， 通过中性盐雾测试， 盐雾吋间超过 200小吋， 喷 涂处理后按照 2小吋沸水附着性测试， 附着力评定 1级。 [0019] After the above-mentioned passivation agent solution, the salt spray was tested for more than 200 hours by a neutral salt spray test, and the adhesion test was carried out according to the adhesion test of 2 hours of boiling water after the spray treatment, and the adhesion was evaluated to Grade 1.
[0020] 实施例 2 [0020] Example 2
[0021] 按照下列重量份数混合各成分： 以 1000重量分数计， 10份硝酸锌， 6份磷酸二 氢钡， 4份钼酸钠， 1份硫脲， 0.3份柠檬酸， 余量为去离子水， 搅拌， 混合均匀 ， 配制成钝化剂。 [0021] The components are mixed according to the following parts by weight: 1000 parts by weight, 10 parts of zinc nitrate, 6 parts of dihydrogen phosphate, 4 parts of sodium molybdate, 1 part of thiourea, 0.3 parts of citric acid, the balance is Ionic water, stirred, evenly mixed, formulated as a passivating agent.
[0022] 处理方法： 配制好不锈钢钝化剂； 将不锈钢件浸入钝化剂溶液中， 在 40°C温度 下， 经过 10分钟处理后， 水洗不锈钢工件， 干燥。 [0022] Treatment method: preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, after treating at a temperature of 40 ° C for 10 minutes, washing the stainless steel workpiece and drying.
[0023] 经过上述钝化剂溶液处理后， 通过中性盐雾测试， 盐雾吋间超过 300小吋， 喷 涂处理后按照 2小吋沸水附着性测试， 附着力评定 1级。 [0023] After the above-mentioned passivation solution treatment, the salt spray was passed through a neutral salt spray test for more than 300 hours, and after the spray treatment, the adhesion test was carried out according to 2 hours of boiling water adhesion, and the adhesion was evaluated as 1 grade.
[0024] 实施例 3 [0024] Example 3
[0025] 按照下列重量份数混合各成分： 以 1000重量分数计， 15份硝酸锌， 12份磷酸二 氢钡， 7份钼酸钠， 2份硫脲， 0.7份柠檬酸， 余量为去离子水， 搅拌， 混合均匀 ， 配制成钝化剂。 [0025] The components are mixed according to the following parts by weight: 1000 parts by weight, 15 parts of zinc nitrate, 12 parts of dihydrogen phosphate, 7 parts of sodium molybdate, 2 parts of thiourea, 0.7 parts of citric acid, the balance is Ionic water, stirred, evenly mixed, formulated as a passivating agent.
[0026] 处理方法： 配制好不锈钢钝化剂； 将不锈钢件浸入钝化剂溶液中， 在 35°C温度 下， 经过 10分钟处理后， 水洗不锈钢工件， 干燥。 [0026] Treatment method: preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, and after washing at a temperature of 35 ° C for 10 minutes, the stainless steel workpiece is washed and dried.
[0027] 经过上述钝化剂溶液处理后， 通过中性盐雾测试， 盐雾吋间超过 600小吋， 喷 涂处理后按照 2小吋沸水附着性测试， 附着力评定 0级。 [0027] After the above-mentioned passivation solution treatment, the salt spray was tested for more than 600 hours after the neutral salt spray test, and the adhesion test was carried out according to the adhesion test of 2 hours of boiling water after the spray coating treatment, and the adhesion was evaluated to grade 0.
[0028] 实施例 4 Embodiment 4
[0029] 按照下列重量份数混合各成分： 以 1000重量分数计， 20份硝酸锌， 15份磷酸二 氢钡， 10份钼酸钠， 3份硫脲， 1份柠檬酸， 余量为去离子水， 搅拌， 混合均匀 ， 配制成钝化剂。 [0029] The components are mixed according to the following parts by weight: 1000 parts by weight, 20 parts of zinc nitrate, 15 parts of dihydrogen phosphate, 10 parts of sodium molybdate, 3 parts of thiourea, 1 part of citric acid, the balance is Ionic water, stirred, evenly mixed, formulated as a passivating agent.
[0030] 处理方法： 配制好不锈钢钝化剂； 将不锈钢件浸入钝化剂溶液中， 在 35°C温度 下， 经过 10分钟处理后， 水洗不锈钢工件， 干燥。 [0030] Processing method: preparing a stainless steel passivating agent; immersing the stainless steel piece in the passivating agent solution, and after washing at a temperature of 35 ° C for 10 minutes, the stainless steel workpiece is washed and dried.
[0031] 经过上述钝化剂溶液处理后， 通过中性盐雾测试， 盐雾吋间超过 600小吋， 喷
涂处理后按照 2小吋沸水附着性测试， 附着力评定 0级。 [0031] After the above-mentioned passivation solution treatment, through the neutral salt spray test, the salt spray is more than 600 hours, spray After the coating treatment, according to the adhesion test of 2 small boiling water, the adhesion was evaluated to grade 0.
需要说明的是， 本发明并不局限于上述实施方式， 根据本发明的创造精神， 本 领域技术人员还可以做出其他变化， 这些依据本发明的创造精神所做的变化， 都应包含在本发明所要求保护的范围之内。
It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the inventive spirit of the present invention. These changes according to the inventive spirit of the present invention should be included in the present invention. Within the scope of the claimed invention.
Claims
权利要求书 一种不锈钢钝化剂， 用于在不锈钢工件表面形成钝化膜， 其特征在于A stainless steel passivating agent for forming a passivation film on a surface of a stainless steel workpiece, characterized in that
， 以 1000重量份计， 包括如下重量份数的成分： 5-20份硝酸锌， 3-15 份磷酸二氢钡， 2-10份钼酸钠， 0.5-3份硫脲， 0.1-1.0份柠檬酸， 余量 为去离子水。 , in parts by weight, based on 1000 parts by weight: 5-20 parts of zinc nitrate, 3-15 parts of dihydrogen phosphate, 2-10 parts of sodium molybdate, 0.5-3 parts of thiourea, 0.1-1.0 parts Citric acid, the balance is deionized water.
如权利要求 1所述的不锈钢钝化剂， 其特征在于， 所述硝酸锌的重量 份数为 10-20份。 The stainless steel passivating agent according to claim 1, wherein the zinc nitrate is 10-20 parts by weight.
如权利要求 1所述的不锈钢钝化剂， 其特征在于， 所述磷酸二氢钡的 重量份数为 5-15份。 The stainless steel deactivator according to claim 1, wherein the dihydrogen phosphate is in an amount of 5 to 15 parts by weight.
如权利要求 1所述的不锈钢钝化剂， 其特征在于， 所述钼酸钠的重量 份数为 4-10份。 The stainless steel passivating agent according to claim 1, wherein the sodium molybdate is 4 to 10 parts by weight.
如权利要求 1所述的不锈钢钝化剂， 其特征在于， 所述硫脲的重量份 数为 1-3份。 The stainless steel passivating agent according to claim 1, wherein the thiourea has a weight fraction of from 1 to 3 parts.
如权利要求 1所述的不锈钢钝化剂， 其特征在于， 所述柠檬酸的重量 份数为 0.4-1.0份。 The stainless steel passivating agent according to claim 1, wherein the citric acid is used in an amount of from 0.4 to 1.0 part by weight.
一种不锈钢件表面钝化处理方法， 其包括下列步骤： 配制如权利要求 1-6任一项所述的不锈钢钝化剂； 将不锈钢工件浸入钝化剂溶液中， 经过预定吋间处理后， 水洗不锈钢工件， 干燥。 A method for surface passivation treatment of stainless steel parts, comprising the steps of: formulating the stainless steel passivating agent according to any one of claims 1-6; immersing the stainless steel workpiece in the passivating solution, after a predetermined daytime treatment, Wash the stainless steel workpiece and dry it.
如权利要求 7所述的不锈钢件表面钝化处理方法， 其特征在于， 在钝 化处理吋， 不锈钢钝化剂溶液的温度控制在 20 - 40°C， 不锈钢工件浸 入钝化剂溶液的吋间为 2-10分钟。
The surface passivation treatment method for stainless steel parts according to claim 7, wherein in the passivation treatment, the temperature of the stainless steel passivation solution is controlled at 20 - 40 ° C, and the stainless steel workpiece is immersed in the crucible solution For 2-10 minutes.
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| CN111809171A (en) * | 2020-07-10 | 2020-10-23 | 常熟市东升法兰有限公司 | Stainless steel flange passivation technology |
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