High-chromium alloy – new burner`s generation material

High-chromium alloy - new burner's generation material

The material of the future for PellasX burners is based on a group of high-chromium alloys with heat-resistant and incandescent resistant properties.

A high-chromium alloy with a chromium content from 24% to 32%, which in the form of a compound with carbon and silicon has excellent corrosion resistance, including high temperature corrosion.

The burner combustion chamber made of this material withstands high temperature loads much longer than heat-resistant steel, mainly due to its casting in the mold.

1.4841 heat-resistant steel has an average chromium content of 25% and nickel 20%. It is mainly corrosion resistant due to chrome.

 

 

High-chromium alloy  is characterized by a chromium content of 25%, while nickel is only 4-5%, silicon 1.5%, and manganese and moblibdenum 1% (molybdenum increases resistance to pitting corrosion, nickel improves its plasticity).

 

The processing of heat-resistant steel, i.e. welding and bending, changes its structure and creates corrosion centers. The casting of the body made of high-chromium heat-resistant and incandescent-resistant alloy is not subjected to any additional plastic works or welding, which affects its resistance to thermal overloads and to its lifespan.

 

The photos below were taken after a four-hour cycle of alternating annealing of furnaces at 1100 ˚C and cooling.

 

Burners with InCroX material

At the moment, the elements of combustion chambers and grates using High-chromium alloy have REVO MICRO 16 kW, REVO MINI 26 kW as well as M 350 kW and M 500 kW burners.

Soon they will be joined by M MICRO 16 kW, MINI 26 kW and 35 kW.