Precision casting products are mostly metal, casting surface is easily corroded, difficult to clean up after the rust, affect the use of the casting, this time will be carried out before treatment, here we look at precision castings in the pre-treatment process.
1, first soak or wash with clean water. Before the workpiece degreasing chemical rust, first clean the workpiece (immersion), one can first workpiece clean again, the second is to enrich the pore surface with water, easy to clean after chemical treatment.
2, using mechanical means to remove the oxide. Such as: tumbling, sand blasting, polishing, grinding and so on. Some precision castings treated by this method, and then the water after washing, or other direct blackened rust treatment.
3, degreasing rust activation. Due to the casting surface porosity more after contamination, especially oil, is difficult to remove, handle bad impact on the entire anti-rust treatment, can not reach the intended purpose, including iron, copper, aluminum and its alloys castings. |
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Wuxi Yongsheng Metals Goods Co.,Ltd.
Hotline:86-13806173867
Contact: Zhiyong Lu
Contact: Miss Ma
Tel: 0510-68916532
Fax: 0510-68916533
E-mail: lyzz@vip.163.com
caochuantou@163.com
Website:http://57651455.cn
Address: No. 38 Xiqun Road Industrial Park, Jiangsu Wuxi Meicun
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