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％，鹼金屬氧化物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燒結能源，改善現場運營環境，並產生更多的經濟利益{.
爐排的四個分類如下：
我.高鉻鑄鐵爐子
由於高溫下鉻的大量鉻，在高鉻合金鑄鐵條的表面形成了CR203膜結構，從外部氧化到內部氧化.，因此，高鉻合金鑄鐵條帶有良好的熱耐熱性和氧化能力{2}，這是在{2}上均可{矩陣中的高鉻含量和（Fe，Cr）23C6碳化物的分解提供了大量Cr，因此高鉻合金鑄鐵本身可以對氧化物膜的裂紋具有良好的維護效果.}
兩個，普通的鑄鐵籃桿
在1980年之前，由於燒結設備的容量較小，設備相對較老，筆條的使用主要是灰色鑄鐵，這種筆條帶短暫的使用壽命，大量消耗.當將灰鑄鐵被氧化時，將氧化鐵膜氧化時，在表面上形成了一層氧化鐵膜，是Fe203，Fe304和Feo，是Fe204，Feo the Inserne a i內部} {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.
三個合金高的高鉻合金籃桿
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鋼，減少碳含量，去除鎳含量，並添加適當量的Ti，B，A1，RE和其他元素.氧化層中CR203的含量要高得多，而RTCR25Ni的氧化層中的CR203也高於RTCR25NI的含量，並且RE氧化物也包括在內，並且包括良好的組合，{10} compint compints {{10} compint {{{10} compint confs {組織. rtcr25ni的基本組織IS＆gamma + + p，ZG9511的矩陣結構IS＆alpha . + p，no＆rarr; ＆伽瑪矩陣期間矩陣更穩定{.
四個，耐熱的延性鐵爐子
由於結節鐵的石墨是孤立的分佈，因此沒有氧氣進入金屬的渠道，因此氧化速率和生長速率低於灰色鑄鐵的使用效果優於灰色鑄鐵.的使用效果更好，但在近年來，高鉻合金鑄鐵桿仍在較高的生產過程中，較小的生產效果，但由於較低的生產和較低的生產，因此，由於較低的生產和較低的促進，因此，由於較低的促進，並且由於較低的促進，而且還需要促進熱處理，並且由於較低的促進，而且由於較低的生產而言，較高的生產效果，並且是由於較高的生產，並且是由於較高的促進效應，並且由於較低的速度效果，而且還需要促進，並且由於較低的生產而言，較高的鑄鐵棒之間仍然存在較大的生產。燒結卡車.
