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High temperature resistant grate bars for heat treatment

Grate bars are the main accessory on the sintering machine trolley, the role of the Grate bar is to form a slot space with the trolley railing plate to accommodate and carry the mineral material.The special heat-resistant castor produced by GIAHAR has been widely recognised by customers in the industry.

high temperature


Grate bars working environment requirements have the following characteristics:
1.Temperature changes: sintering, sintered ore temperature up to 1100 ℃ burning, castor temperature is generally 800-1000 ℃; unloading in the air after the temperature drops rapidly to 100-300 ℃.

2. Gas corrosion: oxidation and corrosion caused by CO, CO2, SO2 and water vapour in space.

3. High-temperature load-bearing: high-temperature sintering to withstand the gravity of sintered ore.

4. Impact and friction wear of sintered ore: impact and friction wear of sintered ore during loading and unloading.


In addition to the regular bulk delivery of high temperature resistant alloy grate bars, GIAHAR has additional patented technology for high temperature alloys to improve the performance of the alloys. By adjusting the material with additional additives, the performance of the material will be significantly improved, extending its service life by more than half. This metal product solution is a customised service for our high-end customers.


MaterialMaximum User 
Temperature (°C)
Tensile strength
σь/ Mpa≥
Yield strength
σ0.12/Mpa
Elongation δ5(%)≥HBSservice life
ZG40Cr25Ni20Si211504402358≤187 
GIAHAR 01130057230610≤243

Up 50%



grate bars

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