ul.Universitetskaya, 50, building 1, office 419, Obninsk, Kaluga region, Russia, 249025
Russian version

Use of DYMET® equipment in auto service

Use of DYMET® equipment in auto service

Repair of corrosive damage in head of block of cylinders

The photo series below presents main procedures of repairing (filling) of corrosive damages in head of block of cylinders appeared due to aggressive cooling liquids use.

The corroded plate of head of block of cylinders (HBC) is show on the photo:

The repaired area is treated with a special instrument in order to remove mellow acicular metal and slag from it

The repaired area is treated by DYMET® device in 'abrasive treatment' mode in order to improve adhering of deposited metal to the plate

Then aluminium is deposited on the damaged area

An example of filling big corroded hole with the appropriate metal choke is shown on the

The choke is fixed in the hole and then metal is deposited on the damaged area till it reaches the HBC plate surface level

The excessive metal is first removed by rough mechanic treatment

Then fine local polishing or whole plate surface grinding is necessary to consolidate HBC with block of cylinders.

The process peculiarities:

there is no need to remove technical contaminations (in particular, oils) from the surface before treating it;
the metal deposition process is held under room temperature, there is no need to heat and then to cool HBC (as it is necessary to do in argon welding).

Post-sale anticorrosive treatment of welding seams of exhaust tract components

Every amateur and (of course) every professional driver or auto service worker is familiar with exhaust tract components corrosion problem. The problem is that those car components are actually most exposed to corrosion. More than other car units, those components are influenced by all factors making for corrosive destruction: varying high and low temperatures, humidity, road salt, dust and sand. As a result, muffler, resonator or other exhaust tract components are necessary to be replaced every couple of years.

Producers endeavour to extend lifetime of exhaust tract components. Esteemed companies make them from stainless steel, other producers use aluminium treated black steel for them, but the cheapest (and hence the less long-lived) components are made of traditional black steel and by chance are coated with 'silver paint'. Without discussing the advantages or limitations of different companies products let us illustrate an example of using DYMET® equipment for 'post-sale' treatment of Bosal muffler for Opel Vectra:

The muffler looks great, it is made of aluminium treated steel, which is very stable under all listed above negative conditions. However, red-brown welding seams connecting tubes with the muffler or longitudinal tube welding seams immediately capture one's attention. These seams are actually the weakest part of the whole unit. In practice they collapse first leading to the necessity to replace the whole unit.

Before installing a new muffler on a car, an auto service worker equipped with DYMET® device has an excellent opportunity to treat all welding seams by the aluminium coating of appropriate thickness. The total procedure of such 'improvement' will not take more than 15-20 minutes, but it will significantly extend the lifetime of the muffler.