| JIANG Jing-hua,LI Ling,HU Jian_xin,JIANG Jian-qing,MA Ai-bin.New Zinc-phosphating Process with RE Catalyzer at Low Temperature for Painting Pretreatment of Cold-rolling A3 Steel Sheet[J],36(4):79-81,88 |
| New Zinc-phosphating Process with RE Catalyzer at Low Temperature for Painting Pretreatment of Cold-rolling A3 Steel Sheet |
| Received:April 12, 2007 Revised:August 10, 2007 |
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| DOI： |
| KeyWord:Zinc phosphating Rare earth compound Painting A3 steel sheet |
| Author | Institution |
| JIANG Jing-hua |
College of Materials Science and Engineering, Hehai University, Nanjing , China |
| LI Ling |
College of Materials Science and Engineering, Southeast University, Nanjing , China |
| HU Jian_xin |
College of Materials Science and Engineering, Southeast University, Nanjing , China |
| JIANG Jian-qing |
College of Materials Science and Engineering, Southeast University, Nanjing , China |
| MA Ai-bin |
College of Materials Science and Engineering, Hehai University, Nanjing , China |
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| Abstract: |
| The phosphating thermodynamics was discussed to conclude that rare earth is valid for improving the quality of phosphate coating for anchoring layer. With multiplex accelerant containing rare-earth compound , a novel anticorrosive zinc-phosphating process at the low temperature, very feasible as painting pretreatment of steel and iron parts, was developed and optimized. The experimental results show that the phosphating effect is very good for cold-rolling A3 thin steel plate used widely to home appliances crust. With the fast LZP zinc-phosphating solution including l. 0 ~ 2. Og/ L rare-earth accelerant, the phosphate coating thickness about 3μm is obtained at 400C in 3 -4min, which is fine and compact crystal, highly adhesive to substrate of A3 steel plate and excellent corrosion resistance. Moreover, experimental results of online painting show that the paint coating has excellent characteristics of shock resistance , corrosion resistance and adhesion. |
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