High Speed Steel roll has a high hardness and outstanding wear-resistance in high temperature, by controlling the chemical composition and heat treatment process, the hardness of working layer of roll barrel can reach 75-95HSD, there is complex carbides of vanadium, wolfram, niobium, molybdenum in matrix of martensite, which commits homogeneous hardness throughout the working layer, and even wear in grooves. Chemical composition
Adamite rolls and rings are performance steel rolls with an optimum combination of wear and fire-crack resistance. This quality has a short range of carbon content, plus varying quantities of Nickel, Chromium and Molybdenum to achieve higher hardness levels. It can be produced either by the Static Monoblock conventional method, or by the horizontal Centrifugal Cast method.
Supplier: Alloy Casting Steel Roll, Graphite Steel Roll, Adamite Roll And Ring, Pearlitic Nodular Cast Iron Roll And Ring, Acicular Nodular Cast Iron Roll And Ring, Indefinite Chilled Alloy Roll, Hss Roll And Ring, Tungsten Carbide Ring, And Composite Roll With Tungsten Carbide Ring
Supplier: Tungsten Carbide Rings, Rods, Bars, Rings, Inserts And Hss Rolls
SGA rolls are widely used in intermediate stands and finishing stands, due to it's stable quality, and better strength, toughness and wear resistance. In normal steel rolling process, it has no rolling accident, no breakage, in most of severe situation, mills used for replacing AIC rolls. Material C Si Mn Cr Ni Mo SGAâ? 2.90~3.60 1.20~2.20 0.20~0.80 0.20~1.00 3.01~3.50 0.50~1.00 SGAâ?¡ 2.90~3.60 1.00~2.00 0.20~0.80 0.30~1.50 3.51~4.50 0.50~1.00
Alloy Indefinite Chilled is cast iron with fine inter-crystalline graphite evenly distributed throughout the working layer of roll barrel.The sizes, shapes and distributions of graphite and carbide are controlled by the chilling effect and the contents of alloy elements.The addition of alloy elements such as Mg,Ni,Cr,and Mo changes the matrix from pearlite and bainite to martensite. Plus the present of small amount of fine graphite, the performance of spalling resistance, thermal crack resistance and wear resistance were enhanced significantly. The material has small hardness gradient in the working layer of roll barrel and is suitable for intermediate and finishing stands for bar,wire and section mills.
Graphite Steel (GST) The character of graphite steel roll is similar to that of adamite roll. The main character is that it contains a small amount of fine graphite in its micro-structure, which increases its resistance to fire-crack and prevent oxidized scales from adhering. Thus making it suitable for blooming and roughing stands.
Adamite is a material that has both high strength and toughness of cast steel and good wear-resistance and hardness of cast iron. Due to its alloy elements such as Si, Ni, Cr, Mo etc, and some amount of carbides in the matrix, through a certain of special heat treatment technology, making it has a good wear-resistance and toughness. AD roll also has small amount of hardness drop and deep cutting depth.
Alloy steel formed by adding some alloy elements into the common carbon steel, through heat-treatment process, the good performance of wear-resistance and toughness can be achieved. It is widely used for backup/roughing roll for plate/strip mill and backup roll for leveling mill, Roughing roll for plate/section/bar & wire-rod mill; Break-down roll for rail beam/universal section mill; Descaling/roughing/backup/vertical roll for strip mill.
High chrome steel contains a lot of Cr, Ni, Mo and other alloy elements in the liquid metal. When the liquid metal solidifies, the carbide precipitated in the matrix structure is M7C3 eutectic carbide, , so it has good wear resistance.
