发明申请
- 专利标题: Method For Preparing Metallic Workplaces For Cold Forming
- 专利标题(中): 准备金属加工场用于冷成型的方法
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申请号: US11913529申请日: 2006-05-03
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公开(公告)号: US20080166575A1公开(公告)日: 2008-07-10
- 发明人: Klaus-Dieter Nittel , Ralf Schneider , Andreas Lang
- 申请人: Klaus-Dieter Nittel , Ralf Schneider , Andreas Lang
- 申请人地址: DE Frankfurt am Main
- 专利权人: CHEMETALL GMBH
- 当前专利权人: CHEMETALL GMBH
- 当前专利权人地址: DE Frankfurt am Main
- 优先权: DE102005023023.7 20050519
- 国际申请: PCT/EP06/04121 WO 20060503
- 主分类号: B32B15/04
- IPC分类号: B32B15/04 ; B21B45/02 ; C23C28/00
摘要:
The invention relates to a method for preparing metallic workpieces for cold forming by contacting the metallic surfaces thereof with an aqueous acid phosphating solution so as to embody at least one phosphate coating and then coating the phosphate-coated surfaces with at least one lubricant in order to embody at least one lubricant layer. According to the inventive method, the phosphating solution essentially contains only calcium, magnesium, or/and manganese as cations that are selected among cations of main group 2 and subgroups 1, 2, and 5 to 8 of the periodic table of chemical elements in addition to phosphate. Furthermore, an alkaline earth metal-containing phosphating solution is free from fluoride and complex fluoride while the phosphating process is carried out electrolytically. The invention further relates to a metallic workpiece that is coated accordingly as well as the use of workpieces coated in said manner.
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