论文部分内容阅读
一、腐蚀的起因为什么会发生腐蚀(俗称生锈),这一问题我想大家早已清楚了。本文仅以车体的某些特定部位为例简单地介绍如下。看一看旧的车辆,就曾发现过外板与底架的重叠部位锈蚀、外板膨胀鼓起。这部分是在涂完防锈涂料后经点焊或塞焊组合而成的,但涂料因焊接热而烧损浮起,进而产生剥离,水和氧气就从外板与底架的重叠缝隙间侵入,并在该处形成局部电池(两个金属体与电解溶液的结合),这样,由于金属溶解而产生了腐蚀(生锈),详细情况见图1所示。
First, the cause of corrosion Corrosion occurs (commonly known as rust), I think this issue has long been clear. This article only to some specific parts of the car as an example briefly described below. Take a look at the old vehicles, had found the overlap of the outer plate and the chassis corrosion, outer bulge bulging. This part is coated with anti-rust coating by spot welding or plug combination, but the coating due to heat and burning paint floating, resulting in peeling, water and oxygen from the outer plate and the chassis overlap gap Invade, and in the formation of local batteries (two metal body and electrolytic solution combination), so that due to dissolution of the metal corrosion (rust), the details shown in Figure 1.