锆盐工艺在大比例冷轧板车身上的防锈应用研究

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中图分类号：TQ639 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250218

Study on the Application of Zirconium Conversion Process to Rust Prevention ofLarge-Proportion Cold Rolled Steel Sheets in Body-inWhite

Qi Dongmei'，Peng Jintao'，Chen Feng²，Luo Jie，Wang Fan'， Ji Haiyang' （1.DongfengHondaMotorCo.，Ltd.，Wuhan43056;2.NionParkerizingCo.，Ltd.，Wuhan430o56;3.HunanKansaiAutomotive Coatings Co.，Ltd.， Changsha 410199）

Abstract：In order to achieve the successul introduction of zirconium salt green process and ensure theanti-rust performance ofcold-rolled steel plateof the vehicle bodyis atthesame level orabove thatof the existing phosphating andelectrophoresisproceses，inthispaper，theapplicationof zirconiumsaltfilmpretreatment technologytothebody of automotive industry issystematicallystudied.Throughcomparative analysisof the body plateratioandanti-rust performance evaluation methods of representative models of mainstream automotive brands，Itreveals the advantages of theintroduced third-generation zirconiumsaltand thesupporting processinadapting totheprocessingof large proportionsofcold-rolled plates.Taking thed model，whichusesa large proportionofcold-rolled steel plates，asan example，through processverification mainly based oncyclic corrosion tests，ehicle body penetration and full disassembly inspection，aswellasempirical research on theroadrustdurability performance of theentirevehicle，a comprehensiverustpreventionsolutionincluding theimprovement of degreasingability，theim-provementof rust preventionability between processes，theimprovementof thepenetration powerof thematching electrophoretic materials，and the upgrading of zirconium salt pretreatment equipment was proposed.

Key words： Zirconium prtreatment，Electrophoreticcoating，Cold rolled steel，Bodyrust prevention

1前言

汽车车身锈蚀直接影响车辆安全性与使用寿命，据中国消费品质量安全促进会公开信息，在全世界范围内，每年因腐蚀问题导致的损失为平均每辆汽车150～250美元（约合1069～1781元人民币）。（剩余7769字）