Has the Rusting Issue of Domestic Cars Been Resolved?
1 Answers
The rusting issue in domestic cars remains largely unresolved. Causes of rusting in domestic cars: Poor-quality materials, such as single-sided galvanized steel sheets or even non-galvanized ordinary cold-rolled steel sheets, are often used. Automakers lack sufficient experience in rust prevention, and the overall technical level of factories is generally mediocre, with relatively outdated processes. Additionally, critical areas prone to rust, such as the chassis and steering gear, often do not undergo the necessary rust-proofing procedures, resulting in subpar rust prevention. Common rust-prone areas in cars: These primarily include brake discs, paint surfaces, chassis, and the dashboard frame. Brake discs operate in harsh conditions, enduring prolonged high temperatures and exposure to air and moisture—key factors accelerating iron oxidation. Most vehicles use cast iron brake discs, making rust a common occurrence. The main culprit behind paint surface rust is moisture trapped in microscopic paint pores. Collisions, scratches, or even small stones hitting the paint can create tiny spots that develop into rust stains. The chassis, being closest to the ground, is severely affected by road conditions. It suffers from sand and gravel impacts, scraping on uneven roads, and corrosion from rain and snow, significantly shortening its lifespan. Chassis rust can further threaten the normal functioning of other components: compromised steering, oil leaks, chassis deformation, and loose structural framework all pose safety hazards. The dashboard frame, due to its numerous weld points and lack of surface treatment by some manufacturers, is also highly prone to rust. Its concealed location makes it difficult to detect in many cases.
