Study on Phosphating Pretreatment Properties of Hot-Rolled Pickling Steel Plate with Honeycomb Surface Morphology

LONG Yuan, YAN Chen-xi, HAO Yu-lin, QI Zhi-kun, LIU Hua-sai, LI Xue-tao

doi:10.16577/j.issn.1001-1560.2023.0008

Materials Protection >

2023 , Vol. 56 >Issue 1: 50 - 57

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0008

Study on Phosphating Pretreatment Properties of Hot-Rolled Pickling Steel Plate with Honeycomb Surface Morphology

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1. Technology Research Institute of Shougang Group Co.， Ltd.， Beijing 100043， China；2. Beijing Key Laboratory of Green Recyclable Process for Iron ＆ Steel Production Technology， Beijing 100043， China

Received date: 2022-07-25

Revised date: 2022-08-09

Accepted date: 2022-09-21

Online published: 2023-07-25

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Abstract

In order to study the effect of honeycomb surface on the phosphating properties of hot-rolled pickling plate， and to analyze the reasons for the formation of honeycomb surface as well as the mechanism for the honeycomb surface to influence the growth of phosphating film， a phosphating film was prepared on the honeycomb surface of steel plate. Glow spectrometer and roughness tester were used to analyze the surface element distribution and the roughness of steel plate surface. Scanning electron microscope was used to observe the morphology of the steel plate surface and phosphating film. X-ray diffraction was used to analyze the P ratio of phosphating film. And the electrochemical workstation was used to study the corrosion resistance of phosphating film and the activity of steel plate with honeycomb surface in phosphating solution. Results showed that on the honeycomb surface of pickling plate， the phosphorization film coverage rate was less than 100%， the P ratio of phosphorization film was 70.1%， the impedance was 1.6×104 Ω·cm2， the self-corrosion potential was about -0.61 V， the self-corrosion current was 10 μA/cm2， and all the properties were worse than those of the phosphating film having typical surface morphology. Through the simulation experiment of diatom mud containing Cl-，it was confirmed that the honeycomb morphology was caused by excessive erosion of Cl-. After surface conditioning treatment， the open-circuit potential of steel plate with honeycomb surface in the phosphating solution shifted positively significantly，and the reaction activity was reduced. The reason was that the surface conditioning solution left in the honeycomb microstructure after surface conditioning treatment prevented the phosphating solution from contacting with the steel plate， slowed down the dissolution process of the steel plate， resulting in a low concentration of Fe2+ on the surface of the steel plate， and thus inhibited the Fe2+， Zn2+ and phosphate ions from forming phosphating film on the surface of the steel plate. As a result， the coverage rate of phosphating film on the honeycomb surface of pickling plate was insufficient. Therefore，the honeycomb surface was not conducive to the growth of the phosphating film. So，it was necessary to control the stability of the pickling process and check the pre-rinsing flow parameters，drying roller，rinsing tank and rinsing nozzle equipment regularly to avoid honeycomb surface of the pickling plate.

Key words： hot rolling; pickling plate; honeycomb; pre-treatment; phosphating

Cite this article

LONG Yuan, YAN Chen-xi, HAO Yu-lin, QI Zhi-kun, LIU Hua-sai, LI Xue-tao . Study on Phosphating Pretreatment Properties of Hot-Rolled Pickling Steel Plate with Honeycomb Surface Morphology[J]. Materials Protection, 2023 , 56(1) : 50 -57 . DOI: 10.16577/j.issn.1001-1560.2023.0008

References

[ 1] 郭子峰，张 ，李秋寒，等. 首钢热轧酸洗板的研制与开发[J]. 中国冶金， 2018，28(7):28-30.GUO Z F， ZHANG Y， LI Q H， et al. Development of hotrolled and pickled steel in Shougang[J]. China Metallurgy，2018，28(7):28-30.

[ 2] 林飞，王春峰，李志峰，等. 酸洗工艺对热轧酸洗板表面质量影响机理研究[J]. 轧钢， 2019，36(2):17-24.LIN F， WANG C F，LI Z F， et al.Study on the effect mechanism of pickling process on surface quality of hot rolled pickling plate[J]. Steel Rolling， 2019，36(2):17-24.

[ 3] 刘小军，郭勇，顾晓琳，等. 热轧酸洗板生产过程中的表面质量控制[J]. 新疆钢铁， 2016(4):20-22.LIU X J， GUO Y， GU X L， et al. The Surface Quality Control in the Process of Hot-rolled Pickling Plate[J]. Xinjiang Iron and Steel， 2016(4):20-22.

[ 4] FOULADI M， AMADEH A. Effect of phosphating time and temperature on microstructure and corrosion behavior of magnesium phosphate coating [J]. Electrochimica Acta，2013，106(9):1-12.

[ 5] MANNA M. Characterisation of phosphate coatings obtained using nitric acid free phosphate solution on three steel substrates: An option to simulate TMT rebars surfaces[J]. Surface and Coatings Technology， 2009，203(13): 1 913-1 918.

[ 6] ZUBIELEWICZ M， Kamińska-Tarnawska E， KOZ OWSKA A. Protective properties of organic phosphate - pigmented coatings on phosphated steel substrates[J]. Progress in Organic Coatings， 2005，53(4):276-285.

[ 7] 申龙. 磷化冷轧基板表面黑变缺陷研究[J]. 表面技术， 2015，44(1):141-145.SHEN L. Study on Blackening Defect on Surface of Coldrolled Steel Sheet for Phophating[J]. Surface Technology，2015，44(1):141-145.

[ 8] AMIRUDIN A， THIERRY D. Corrosion mechanisms of phosphated zinc layers on steel as substrates for automotive coatings[J]. Progress in Organic Coatings， 1996，28(1):59-75.

[ 9] 沈璟虹，荆旭龙，万茂松. 表调工艺条件对冷轧汽车板锌系磷化膜耐腐蚀性能的影响[J]. 电镀与精饰， 2020，42(10):21-25.SHEN J H， JING X L， WAN M S. Influence of Surface Conditioning Process Conditions on Corrosion Resistance of Zinc Phosphating Film on Cold - Rolled Automotive Sheet[J]. Plating ＆ Finishing， 2020，42(10):21-25.

[10] 叶法军，李承樵. 表调对汽车涂装磷化成膜的影响[J].材料保护， 2006，39(11):62-64.YE F J，LI C Q. Effect of surface adjustment on phosphating film formation of automobile coating[J]. Materials Protection， 2006，39(11):62-64.

[11] 王毅，邹三千，管兵，等. 表调对涂装防腐影响研究[J]. 现代涂料与涂装， 2020，23(3):24-26.WANG Y， ZOU S Q， GUAN BING， et al. Research of the Influence of Surface Conditioning on Coating and Anticorrosion[J]. Modern Paint ＆ Finishing， 2020，23(3):24-26.

[12] 董蓓，魏星，刘渊媛，等. 磷化工艺对电镀锌预磷化板磷化膜质量的影响[J]. 材料保护， 2018，51(12):72-76.DONG B， WEI X， LIU Y Y， et al. Effect of Phosphating Process on the Quality of Phosphating Film on Electrogalvanized Sheet[J]. Materials Protection， 2018，51(12):72-76.

[13] 赵利民，王树凤. 磷化温度对齿轮钢表面锰系复合磷化膜性能的影响[J]. 电镀与精饰， 2021，43(6):10-14.ZHAO L M， WANG S F. Effect of Phosphating Temperature on Properties of Manganese Composite Phosphating Films on Surface of Gear Steel[J]. Plating ＆ Finishing， 2021，43(6):10-14.

[14] 胡秀英，傅建，马迪. 促进剂对钢铁常温磷化的影响及机理[J]. 电镀与精饰， 2017，39(9):5-9.HU X Y， FU J， MA D. Effect and Mechanism of Accelerator on Steel Phosphating at Room Temperature [ J].Plating ＆ Finishing， 2017，39(9):5-9.

[15] 杨哲龙，何承群，李晓春. 低温磷化控制因素的研究[J].表面技术， 2001，30(4):39-40.YANG Z L， HE C Q， LI C X. Study on the Key Factors in Low Temperature Phosphating Process[J]. Surface Technology， 2001，30(4):39-40.

[16] 张明明，张涵，张圣麟. 三种促进剂对磷化膜耐蚀性的影响[J]. 腐蚀与防护， 2019，40(3):200-204.ZHANG M M， ZHANG H， ZHANG S L. Effects of Three Accelerating Agents on The Anticorrosion Performance of Phosphating Films[J]. Corrosion ＆ Protection， 2019，40(3):200-204.

[17] 高立军，杨建炜，章军，等. 表面粗糙度对冷轧汽车板磷化膜耐腐蚀性能的影响[J]. 四川冶金， 2015，37(5):32-35.GAO L J，YANG J W，ZHANG J，et al.Influence of Surface Roughness of Cold-rolled Automobile Steel Sheets on Corrosion Resistance of Phosphate Coating[J]. Sichuan Metallurgy， 2015，37(5):32-35.

[18] 张留艳，揭晓华，吴惠舒，等. 表面粗糙度对Q235 钢电化学磷化膜耐蚀性的影响[J]. 材料保护， 2016，49(1):63-65.ZHANG L Y， JIE X H， WU H S， et al. Effect of surface roughness on corrosion resistance of electrochemical phosphating film of Q235 steel[J]. Materials Protection， 2016，49(1):63-65.

[19] AUGUSTSSON P E， OLEFJORD P I， OLEFJORD G Y.The influence of annealing on the Phosphatability of steel sheets [J]. Materials and Corrosion， 1983， 34 (11):563-569.

[20] GHALI E， POTVIN R. The mechanism of phosphating of steel[J]. Corrosion Science， 1972，12(7):583-594.

[21] KIM J H. Variation of phosphatability with chemical composition and surface roughness of steel sheet[J]. Surface Engineering， 2013，14(3):265-267.

[22] TEGEHALL E P， VANNERBERG N G. Nucleation and formation of zinc phosphate conversion coating on cold-rolled steel[J]. Corrosion Science， 1991，32(5/6):635-652.

[23] USUKI N， SAKOTA A， WAKANO S， et al. Effects of Ti and Mn Addition on the Surface State and Phosphatability of Cold Rolled Steel Sheets[J]. Tetsu to Hagane， 1991，77(3):398-405.

[24] 郝玉林，蔡宁，姚士聪，等. 高强双相钢表面选择性氧化行为对磷化性能的影响[J]. 表面技术， 2020，49(8):309-315.HAO Y L， CAI N， YAO S C， et al. Effect of selective oxidation behavior of high strength dual-phase steel surface on phosphating properties[J]. Surface Technology， 2020， 49(8): 309-315.

[25] 王亚芬，李志伟，王禹. 汽车板表面前处理及电泳工艺与质量评价研究[J]. 现代涂料与涂装， 2017，20(11):37-39.WANG Y F， LI Z W， WANG Y. Study on surface pretreatment and electrophoresis technology and quality evaluation of automobile plate[J]. Modern Paint ＆ Finishing， 2017，20(11):37-39.

[26] 任彬彬. 冷轧汽车板磷化膜品质的评价方法研究[J]. 中国涂料， 2018，33(1):66-69.REN B B. Study on Evaluation Method of Phosphating Film Quality of Cold Rolled Car Plate[J]. China Coatings，2018，33(1):66-69.

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