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常見問題

磷化處理過程中超聲波清洗機的作用

作者：admin來源：http://www.dijiushangdian.cn/時間：2020-10-29

超聲波清洗機器涂裝前處置工藝非常重要，一般保守工藝是脫脂、水洗、鹽酸除銹、水洗、中和、水洗、表調(diào)、水洗、磷化、水洗、烘干。此工藝弊端是對結(jié)構(gòu)復(fù)雜零件酸洗除銹后的殘酸很難沖洗干凈，尤其是焊接組合件磷化后，其夾縫內(nèi)含有的殘液影響后道工序的加工。工件噴涂后，時間不長沿著夾縫呈現(xiàn)銹蝕現(xiàn)象，波壞涂層表面。嚴重影響產(chǎn)品外觀和內(nèi)在質(zhì)量。如摩托車車輪、油箱、車架、防盜門等。

It is very important to deal with the ultrasonic cleaning machine before painting. Generally, the conservative processes are degreasing, washing, hydrochloric acid derusting, washing, neutralizing, washing, surface conditioning, washing, phosphating, washing and drying. The disadvantage of this process is that it is difficult to clean the residual acid after pickling and derusting of complex structural parts, especially after phosphating of welded assembly parts, the residual liquid contained in the crevice affects the subsequent processing. After spraying, the surface of the coating is damaged due to corrosion along the joint after spraying for a short time. Seriously affect the appearance and internal quality of products. Such as motorcycle wheel, fuel tank, frame, anti-theft door, etc.

經(jīng)過近幾年對超聲波清洗機技術(shù)在磷化處理中的研究實踐，提高產(chǎn)品噴涂質(zhì)量，防止涂裝件返銹方面，已取得良好效果。

Through the research and practice of ultrasonic cleaning machine technology in phosphating treatment in recent years, good results have been achieved in improving the spraying quality of products and preventing rust return of coated parts.

一、超聲波清洗機漂洗

1、 Rinse with ultrasonic cleaner

工件在除油、除銹、水洗、表調(diào)、磷化等工藝中滲透在焊接夾縫內(nèi)的液體很難排出，且水洗不能完全清除干凈，濕熱條件下夾雜物極易造成工件泛黃、生銹。

In the process of oil removal, rust removal, water washing, surface adjustment and phosphating, the liquid penetrating into the welding seam is difficult to be discharged, and the water washing can not completely remove it. The inclusions are very easy to cause yellowing and rusting of the workpiece under hot and humid conditions.

如果這些殘液在烘干過程中不能完全干固，隨后粉末噴涂以高溫烘干時，殘液由于熱膨脹的作用將滲出焊縫，影響涂料與金屬表面的結(jié)合，造成涂層的附著力下降甚至脫離。

If these residues can not be completely dried during the drying process, then when the powder spraying is dried at high temperature, the residual liquid will seep out of the weld due to the thermal expansion, which will affect the adhesion between the coating and the metal surface, resulting in the decrease or even detachment of the coating adhesion.

二、超聲波清洗機工藝參數(shù)

2、 Process parameters of ultrasonic cleaning machine

超聲波清洗溫度是影響清洗速度的重要因素，適當提高清洗溫度可增加空化能力、縮短清洗時間，但超越一定溫度，由于蒸氣壓力增加反而降低空化作用，因此必需堅持一定的溫度。試驗標明水溶性介質(zhì)一般在50℃±5效果好。

Ultrasonic cleaning temperature is an important factor affecting the cleaning speed. Properly increasing the cleaning temperature can increase the cavitation capacity and shorten the cleaning time. However, if the temperature exceeds a certain value, the cavitation effect will be reduced due to the increase of steam pressure. Therefore, it is necessary to adhere to a certain temperature. The test shows that the water-soluble medium is generally good at 50 ℃± 5.

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