Cr react with the oxygen in the air, in the article grate surface generates a dense layer of oxide film, which prevents the further oxidation of furnace grate, eliminates the grate surface fatigue cracking and car cracking tendency, but the Cr under the environment of high temperature creep, prone to in order to improve the grate of the strength and corrosion resistance, optimized design of its composition, adding Ni, Mo, V, and other alloying elements, developed a new type of heat resistant, high toughness, high strength furnace grate. Compared with heat-resistant ductile iron parts, the service life of high-chromium alloy bars is increased by 3 times, the cost is reduced by more than 20%, and the number of downtime is reduced, the labor intensity of workers is reduced, and the service life of non-high-chromium alloy bars is increased from 90 ~ 180 days to more than 2 years
The grate strip is the main part of the sintering machine, and its function is to form a trough space with the trolley fence plate to accommodate and carry ore materials. The part where the grate is in contact with the ore material is the upper surface, and the two ends of the upper grate are stressed and play a supporting role. The bottom of the grate has two roles, the first is the role of fixing the grate when turning over unloading, so that it can not fall off; Secondly, it plays a supporting role in the case of pressure on the top of the grate, which can effectively prevent the grate from bending.
Sintering machine grate
The working conditions of the grate of the sintering machine are very harsh and the temperature changes greatly. The temperature of the grate is generally 800℃ -1000 ℃ during sintering, but after unloading, the cooling temperature in the air rapidly drops to 100℃ -300 ℃. It works in the medium containing CO, CO2, SO2 and water vapor, and is subjected to the impact and friction of sinter in the process of use. The main composition of sintering grate is usually high temperature nickel alloy.
In the process of sintering system generation, the unqualified particles screened in the sintered finished ore are used as the base material above the grate bar of sintering machine to prevent direct contact with the mixture to bond and paste, resulting in a serious decrease in the permeability of sintering material layer, which directly affects the improvement of sinter output and quality as well as the improvement of economic and technical indicators.
The grate strip is the main part of the sintering machine, and its function is to form a trough space with the trolley fence plate to accommodate and carry ore materials. The part where the grate is in contact with the ore material is the upper surface, and the two ends of the upper grate are stressed and play a supporting role. The bottom of the grate has two roles, the first is the role of fixing the grate when turning over unloading, so that it can not fall off; Secondly, it plays a supporting role in the case of pressure on the top of the grate, which can effectively prevent the grate from bending.
