东南亚雨季频繁更换刹车鼓的根本原因及有效防腐蚀技术指南

Root Causes of Frequent Brake Drum Replacements in Southeast Asian Rainy Seasons and Effective Anti-Corrosion Technology Guide

In the Southeast Asian region, the frequent rainy seasons pose a severe anti-corrosion challenge to commercial vehicle brake drums. This has led to a significant increase in the replacement frequency, thereby raising the operating costs. This article delves into the corrosion mechanism of commercial vehicle brake drums in humid and rainy environments.

Corrosion Mechanism in Humid Environments

In a humid and rainy climate like that in Southeast Asia, brake drums are constantly exposed to moisture and oxygen. The iron in the brake drum reacts with oxygen in the presence of water to form iron oxide, which is rust. According to third - party salt - spray tests, in a high - humidity environment with a relative humidity of over 80%, the corrosion rate of unprotected brake drums can increase by up to 50% compared to normal conditions.

Comparison of Anti - rust Treatment Technologies

There are mainly two anti - rust treatment technologies: oil sealing and spraying. Oil sealing works by creating a physical barrier between the brake drum and the external environment. It can effectively prevent moisture and oxygen from contacting the brake drum surface. However, in high - temperature and high - humidity environments, the oil film may deteriorate and lose its anti - rust function. Spraying, on the other hand, forms a more stable protective layer on the brake drum surface. In a salt - spray test lasting 500 hours, the spraying technology showed a corrosion rate that was 30% lower than that of the oil - sealing technology.

Real - world Case Studies

Let's take a look at some real - world cases. A transport company in Indonesia reported that after using brake drums with oil - sealing anti - rust treatment during the rainy season, they had to replace the brake drums every 3 months on average. In contrast, another company in Malaysia that adopted spraying anti - rust technology only needed to replace the brake drums every 6 months. These cases clearly show the difference in the effectiveness of different anti - rust technologies.

Anti - corrosion Solution Selection Guide

For regions with high humidity and low salt - spray, oil - sealing technology can be a cost - effective choice. But for areas with high humidity and high salt - spray, such as coastal areas in Southeast Asia, spraying technology is highly recommended. When the temperature fluctuates greatly, the spraying technology also shows better stability.

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