发明公开
EP1767668A1 Method for enamelling cast parts of standard hypoeutectic gray iron
审中-公开
Verfahren zur Emaillierung von Teilen aus hypoeutektischemStandardgrauguß
- 专利标题： Method for enamelling cast parts of standard hypoeutectic gray iron
- 专利标题（中）： Verfahren zur Emaillierung von Teilen aus hypoeutektischemStandardgrauguß
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申请号： EP05108791.4申请日： 2005-09-23
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公开(公告)号： EP1767668A1公开(公告)日： 2007-03-28
- 发明人: Dal Mas, Candido
- 申请人： Cosma S.p.A.
- 申请人地址： Via Laviano 8 Zone Industriale Ponterosso 33078 San Vito al Tagliamento PN IT
- 专利权人： Cosma S.p.A.
- 当前专利权人： Cosma S.p.A.
- 当前专利权人地址： Via Laviano 8 Zone Industriale Ponterosso 33078 San Vito al Tagliamento PN IT
- 代理机构： Giugni, Valter
- 主分类号： C23D5/04
- IPC分类号： C23D5/04
摘要：
The present invention refers to a method for enamelling cast parts made of standard hypoeutectic gray iron, comprising following steps:
- preparing a cast part of standard hypoeutectic gray iron;
- pre-treating said cast part in order to promote mechanical bond and adherence of the enamel substances to the surface of the part to be enamelled;
- applying porcelain-enamel powders onto the thus pre-treated part by dry electrostatic spray technique;
- vitrifying the enamel powders by exposing the part to a heating and cooling sequence occurring according to such a heating and cooling pattern versus time as to cause the part to dwell at a temperature between 700°C and 780°C for 480 seconds ± 5%.
- preparing a cast part of standard hypoeutectic gray iron;
- pre-treating said cast part in order to promote mechanical bond and adherence of the enamel substances to the surface of the part to be enamelled;
- applying porcelain-enamel powders onto the thus pre-treated part by dry electrostatic spray technique;
- vitrifying the enamel powders by exposing the part to a heating and cooling sequence occurring according to such a heating and cooling pattern versus time as to cause the part to dwell at a temperature between 700°C and 780°C for 480 seconds ± 5%.
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