Сыравіну на краты з Cermetall Composite Spinating Machine ўключае 25 ~ 50 Вт % цепластойлівых сталёвых валакна, 75 ~ 50wt % al2o 3- керамічны парашок sio2 . сярод іх хімічная кампазіцыя цепластойнага сталёвага абалоніны наступныя: c менш, чым у роўных або роўных да 0. or equal to 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%, шчолачныя металічныя аксіды 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 Спажыванне энергіі спекання, палепшыць працу ўчасткаў сайта і прыносіць больш эканамічных пераваг .
Чатыры класіфікацыі рашоткі наступныя:
I . высокі храмавы чыгунная рашотка
Due to the large amount of chromium in high temperature, Cr203 film structure is formed on the surface of high chromium alloy cast iron strips, which delays the process of alloy from external oxidation to internal oxidation. Therefore, high chromium alloy cast iron strips have good heat resistance and oxidation resistance. Due to the high stress, cracks are easy to occur on the surface of the oxide film, and the Высокае ўтрыманне хрому ў матрыцы і раскладанне (Fe, Cr) 23C6 забяспечваюць вялікую колькасць Cr, таму сам чыгун з высокім храмаваным сплавам можа аказаць добрае абслугоўванне на расколіны аксіднай плёнкі .}
Два, звычайны чыгунны бар для кошыка
Before 1980, due to the small capacity of the sintering equipment, the equipment is relatively old, the use of pen strips mainly gray cast iron, this kind of pen strips short service life, large consumption. When gray cast iron is oxidized, a layer of iron oxide film is formed on the surface, which is Fe203, Fe304 and FeO from outside to inside. There are a large number of holes in the FeO layer, І іёны металаў і кіслароду лёгка распаўсюджваюцца праз FEO . Акрамя таго, знешні пласт аксіднай плёнкі FE203 расслабленая і ўзламаная, што лёгка адштурхнуць .. 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) знаходзіцца ў 4 . 5%-5.5%., таму што графіт у гэтым чыгуне ў асноўным злучаны разам, ён дзейнічае як канал для кіслароду, каб увайсці ў метал, які паскарае хуткасць акіслення . звычайныя жалезныя лабірынтныя лабірынты, якія ўвайшлі і ў значнай ступені выкарыстоўваюцца.
Тры, шматразовы лек з высокім храмавым сплавам кошыка
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 steel, the carbon content is reduced, the nickel content is removed, and an appropriate amount of Ti, B, A1, RE and other elements are added. The content of Cr203 in the oxidizing layer is much higher than that of RTCr25Ni, and RE oxide is also included. Compact structure, no cracks and holes, good combination with the collective, Шчыльная арганізацыя . Асноўная арганізацыя rtcr25ni is & gamma + + p, а матрычная структура ZG9511 is & alpha . + p, no & rarr; & Гама; Матрыца больш устойлівая падчас фазавага пераходу .
Чатыры, цепластойлівы пластычны жалезны рашотка
Because the graphite inside nodular iron is isolated distribution, there is no channel for oxygen to enter the metal, so the oxidation rate and growth rate is lower than gray cast iron, the use effect is better than gray cast iron. There is still a big gap between the high chromium alloy cast iron rods developed in recent years, but because of the simple production process, no need for heat treatment, low production cost and easy promotion, it is still used in small and medium-sized Sinter Trucks .
