Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (12): 17-22.

• Mechanical Engineering • Previous Articles     Next Articles

Application of Ni-P Brush Plating to Deep Drawing D ie of Stainless SteelMater ials

Luo Jian-dong  Ruan Feng   

  1. School of Industrial Equipment and Control Engineering, South China Univ. of Tech. , Guangzhou 510640, Guangdong, China
  • Received:2007-01-17 Online:2007-12-25 Published:2007-12-25
  • Contact: 罗建东(1967-) ,男,博士生,主要从事材料表面处理技术研究. E-mail:jdluo@scut. edu. cn
  • About author:罗建东(1967-) ,男,博士生,主要从事材料表面处理技术研究.
  • Supported by:

    广东省科技攻关项目(2004A11403002)

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Abstract:

Adhesive abrasion is the main factor that influences the die operation in the deep drawing of stainless steelmaterials. In order to solve this p roblem, SEM, hardometer, abrasion-testingmachine, XRD, EDS and light microscope are adop ted to investigate the effects of the addition of NiSO4·6H2O、NaH2 PO2·H2O、EDTA-2Na、C6H8O7·H2O、C3H6O3  on the phosphoric content, thickness, hardness, abradability, cohesion, phase, mor-phology and energy spectrum of the p lating layer. An op timized formula for brush p lating is also p roposed. The re-sults show that, by using the p roposed formula, a Ni-P layer with a phosphoric mass fraction of about 2% can be obtained. The layer effectively sticks to the surface of Cr12MoV and possesses excellent hardness and abrasion-re-sistance after heating at 400 ℃. Practical app lication in factories reveals that the strengthened p lating layer obtained by the p roposed formula effectively avoids the adhesive abrasion of the die.

Key words: Ni-P brush plating, deep drawing die, adhesive abrasion, stainless steel