Punch-through is a through hole in a car body caused by rust. Chemical and mechanical treatment of the body, in particular soil-converters, can help to correct the situation.
Punch-through corrosion is a through hole on a car body or, in a simpler way, a "hole". The reasons why rust eats away from the inside of a car can be associated with a violation of the technological process or the use of low-quality materials. Moreover, neither budget domestic cars nor expensive import representatives are insured against this.
The reasons for this phenomenon
The theorem about the "stainless imported car" was not proved, the cars both rusted and continue to rust. The only difference is only in the rate and number of corrosion foci, and these factors directly depend on the following reasons:
Individually designed body geometry and miscalculations of engineers in manufacturing technology, dishonesty of some manufacturers who only "smear their lips" on the car, "forgetting" about processing hard-to-reach places. Often, only the surface of some seams is treated with a narrow layer of an anti-corrosion compound. At the same time, the bottom of the car and cavities hidden from the eyes remain practically unprotected. It is not uncommon for a buyer to discover the first signs of corrosion even at the stage of inspecting a car in a showroom. High concentration of sulfur compounds and saline solutions in the atmosphere of large cities and megalopolises.
Methods for removing corrosion
If it is required to carry out anti-corrosion treatment of a car in order to combat corrosion, then it is necessary to achieve its complete removal. If the rust cannot be completely removed, the body will continue to deteriorate. In practice, several methods of removing corrosion are used, the most popular are mechanical and chemical methods.
Types of machining:
- sandblasting, which involves knocking out rust from the metal surface with sand under high pressure;
- sanding by hand with sandpaper;
- machine grinding.
Chemical treatment consists in the destruction of existing damage by chemical means. For this, washable and indelible rust converters are used. Washable solutions cope with their task 100%, but the main condition for their use is rapid drying of the surface after treatment with water. Otherwise, body repair may take a long time. Leave-in compounds react with rust, converting it into a paintable coating. These mixtures are usually called soil converters. And although the quality of such processing cannot be compared with the quality of coating on pure metal, this method has a great future, since every day the converters do their job better and better.
