A stainless steel housing is required to provide good corrosion protection against water formation during the neutralization of harmful components. This is the only way to ensure a converters unlimited sufficient service life of at least 3-5 years. The material used is chromium or nichrome steel, which is resistant to corrosion, acids, and heat.
Special linings in a converters unlimited
They serve to fix the ceramic block and compensate for the thermal expansion of a ceramic block and stainless steel housing. Also, they dampen vibrations, absorb mechanical loads and axial and radial accelerations. The pads consist of a special wire mesh or ceramic fiber with an insert of mica plates. Due to the interweaving of mica plates, the pads expand under the influence of temperature and adapt to the gap between the block and the stainless steel case.
The interior of the automotive converters unlimited is filled with a special structure made of ceramics or metal. Outwardly, it resembles a honeycomb. The top of a converters unlimited is coated with a thin layer of precious metal.
The presence of such spraying ensures a reduction in the level of harmful emissions. This is achieved because exhaust gases, in contact with precious metals like platinum, rhodium, and palladium, and other substances, enter into a chemical reaction with them.
Each of these metals is highly rated. Therefore, automotive converters unlimited attract many people who are involved in the extraction of precious materials for further resale.
For many years, platinum has been the most valuable metal in aconverters unlimited . There were times when it cost five times as much as palladium. But since 2015, the production of diesel vehicles has dropped significantly. This triggered a drop in platinum prices. If earlier this metal cost $ 2.2 thousand per ounce (about 31.1 grams), then in recent years it has been estimated at $ 600-800. In turn, precious metals used in gasoline cars have risen in price. Thus, the prices for rhodium in recent years have grown from 1.5 thousand to 12 thousand dollars per ounce.
Seeing such impressive numbers, many would want to know how many of these metals are contained in one automotive converters unlimited? It all depends on the car, its engine, and especially the market for every model. One car with the same engine could have different catalysts for different countries. If we calculate the “average”, platinum in one converters unlimited is approximately one and a half grams per kilogram, palladium – 1.3-1.4 g / kg, rhodium – 0.15 g / kg. The knocked-out catalyst weighs about 1.2 kilograms.
The extraction of these metals from a converters unlimited is a rather complicated process that requires the availability of appropriate skills and various expensive substances. There are several technologies through which precious metals can be extracted. The choice in favor of a particular technology is mainly determined by the capabilities of a person who obtains platinum from a converters unlimited. It is also important to understand that there are inevitable losses of recoverable materials during the refining process. In particular, such disadvantages are noted in the leaching technique, which requires multiple washing of chemical reaction components.
The surface of the converters unlimited is coated with precious metals. These materials can be retrieved with appropriate skills and reagents.