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铸铝件的对表面保护层处理缺陷

重庆快乐十分:http://weimuhe.cn 重庆快乐十分日期:[2017-07-15 14:35] 浏览:| 重庆快乐十分

  铸铝件表面的载化物薄膜有耐蚀作用,所以在许多用途中,都不需要进一步处理。一些机械方法,举个例子说,把铝铸件与所选定的磨料及抛光剂装在滚筒中进行滚磨,就能获得好的光洁表面。抛光可使铸件表面光洁并具有反射能力,但是后的效果在程度上取决于合金类型及铸件铝的硬度。喷丸能获得无泽表面,使用钢丝刷则获得平整的无泽表面。电镀、涂漆及阳极处理等一些处理方法可以改善防蚀能力,并使件外表美观。

  The cast film on the cast aluminum surface has corrosion resistance, so there is no need for further treatment in many applications. Some mechanical methods, for example, can be used to roll the aluminum casting with the selected abrasive and polishing agent in the roller to achieve a good finish surface. Polishing allows the casting surface to be smooth and reflective, but the final effect depends to a certain extent on the type of alloy and the hardness of the cast aluminum. Shot peening can obtain a matt surface, and a smooth matt surface is obtained by wire brush. Plating, painting and anodizing can improve the corrosion resistance and make the parts beautiful.

  对于铸铝件,多种化学浸涂法都可用来获得装饰性的耐蚀涂层。铝铸件能进一步涂漆,也能不涂漆。要求具有耐磨性时,单用化学处理是不够的,但可作为涂漆前的预处理。表面上多余的化学溶液可用清水冲洗掉,然后布擦干或用自然干燥。如果铝铸件还要涂漆,就要尽快完成并尽可能不沾污铝铸件。采用合适的底漆时,铝铸件也可以象其它材料一样很容易地上珐琅、涂漆和喷清漆。

重庆快乐十分   For aluminium castings, many chemical dip coating methods can be used to obtain decorative corrosion resistant coatings. Aluminium castings can be further painted or painted. Chemical treatment is not sufficient when abrasion resistance is required, but it may be used as a pretreatment prior to painting. The excess chemical solution on the surface can be rinsed off with clean water, and then dried or dried naturally. If aluminium castings are to be painted, they shall be finished as soon as possible and shall not be contaminated with aluminium castings as much as possible. When suitable primers are used, aluminum castings can be easily varnished, varnished and sprayed like other materials.

  铸铝件常见缺陷:氧化夹渣多分布在铸件的上表面,在铸型不通气的转角部位。断口多呈黄色或灰白色,经x光透视在机械加工时发现,也可在酸洗、碱洗或阳极化时发现产生原因:

重庆快乐十分   Common defects of cast aluminium parts: oxidation slag inclusion is mainly distributed on the upper surface of casting, at the corner of non ventilation of casting. The fracture surface is mostly yellow or gray, and it is found by X-ray inspection during mechanical processing. It can also be found in acid washing, alkaline washing or anodizing:

  1、精炼变质处理后静置时间不够;

重庆快乐十分   1 、 after refining and modification, the dead time is not enough;

  2、浇注系统设计不良;

  2 、 poor design of pouring system;

  3、合金液中的熔渣没有清除干净;

重庆快乐十分   3, the molten slag in the alloy is not cleaned;

重庆快乐十分   4、炉料不清洁,回炉料使用量会产生过多

  4, the charge is not clean, scrap consumption will produce too much

  5、注操作不当,带入夹渣。

  5, improper injection operation, into the slag.

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重庆快乐十分:济南洪业高压电器配件 文章标题:铸铝件的对表面保护层处理缺陷

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