The raw materials of the grate of cermetall composite sintering machine include 25 ~ 50wt % heat-resistant steel fiber, 75 ~ 50wt % Al2O3-SiO2 mullite ceramic powder. Among them, the chemical composition of heat-resistant steel fiber is as follows: C<=0.25%, Si<=2.0%, Mn<=2.0%, Ni8 ~ 37%, Cr14 ~ 26%, the rest is Fe, and the chemical composition of Al2O3-SiO2 mullite ceramic powder is as follows: Al2O365 ~ 75%, SiO218 ~ 26%, CaO1.0 ~ 4.0%, TiO21.0 ~ 3.0%, Fe2O30.5 ~ 2.0％，P2O51〜0.5％，碱金属氧化物1.0〜1.5％。
The grate has the advantages of abrasion resistance, corrosion resistance, oxidation resistance and high temperature resistance of ceramic material and good toughness of metal material. In addition, it has the characteristics of low thermal conductivity and light weight compared with metal grate. It can also make the sintering trolley as a whole more energy saving, environmental protection, lightweight and longevity, reduce the consumption of烧结能源，改善现场运营环境，并产生更多的经济利益{.
炉排的四个分类如下：
我.高铬铸铁炉子
由于高温下铬的大量铬，在高铬合金铸铁条的表面形成了CR203膜结构，从外部氧化到内部氧化.，因此，高铬合金铸铁条带有良好的热耐热性和氧化能力{2}，这是在{2}上均可{矩阵中的高铬含量和（Fe，Cr）23C6碳化物的分解提供了大量Cr，因此高铬合金铸铁本身可以对氧化物膜的裂纹具有良好的维护效果.}
两个，普通的铸铁篮杆
在1980年之前，由于烧结设备的容量较小，设备相对较老，笔条的使用主要是灰色铸铁，这种笔条带短暂的使用寿命，大量消耗.当将灰铸铁被氧化时，将氧化铁膜氧化时，在表面上形成了一层氧化铁膜，是Fe203，Fe304和Feo，是Fe204，Feo the Inserne a i内部} {4} {4 {4 { layer, and metal and oxygen ions are easily diffused through FeO. In addition, the outer layer of oxide film Fe203 is loose and cracked, which is easy to flake off. Therefore, the surface oxide film of non-alloy cast iron has no protective effect, and the service performance is very poor. Later, si was added to gray cast iron, which changed the oxide film structure of iron, and formed dense compounds rich in alloying elements in the original FeO layer, which can effectively prevent oxidation. The oxidation resistance of silicon-containing cast iron increases with the increase of Si content, but with the increase of silicon content, the strength of cast iron decreases. Heat resistant cast iron rods in middle silicon based on gray cast iron are developed in our country, w (Si) is in 4.5%-5.5%. Because the graphite in this cast iron is basically joined together, it acts as a channel for oxygen to enter the metal, which speeds up the oxidation rate. Ordinary cast iron labyrinth strips are rarely used and are largely obsolete.
三个合金高的高铬合金篮杆
Although the high chromium alloy cast iron strip has good oxidation resistance, it has some shortcomings such as low strength, poor toughness and easy fracture. And because of poor nickel metal, the cost of heat-resisting steel bar containing nickel used abroad is too high. The content of Cr on ZG9511 steel grate used by Shougang Machinery factory in 1995 is on the basis of foreign RTCR25NI钢，减少碳含量，去除镍含量，并添加适当量的Ti，B，A1，RE和其他元素.氧化层中CR203的含量要高得多，而RTCR25Ni的氧化层中的CR203也高于RTCR25NI的含量，并且RE氧化物也包括在内，并且包括良好的组合，{10} compint compints {{10} compint {{{10} compint confs {组织. rtcr25ni的基本组织IS＆gamma + + p，ZG9511的矩阵结构IS＆alpha . + p，no＆rarr; ＆伽玛矩阵期间矩阵更稳定{.
四个，耐热的延性铁炉子
由于结节铁的石墨是孤立的分布，因此没有氧气进入金属的渠道，因此氧化速率和生长速率低于灰色铸铁的使用效果优于灰色铸铁.的使用效果更好，但在近年来，高铬合金铸铁杆仍在较高的生产过程中，较小的生产效果，但由于较低的生产和较低的生产，因此，由于较低的生产和较低的促进，因此，由于较低的促进，并且由于较低的促进，而且还需要促进热处理，并且由于较低的促进，而且由于较低的生产而言，较高的生产效果，并且是由于较高的生产，并且是由于较高的促进效应，并且由于较低的速度效果，而且还需要促进，并且由于较低的生产而言，较高的铸铁棒之间仍然存在较大的生产。烧结卡车.
