China Mill Rolls, Roll Rings, Stainless Steel Roller Mould Suppliers, Manufacturers, Factory - QINPENG

1. Tangshan Qinpeng is a fully integrative enterprise who is dedicated to design, production, sales and service in both metallurgical products and equipments. We provides an extensive range of top quality consumables and equipments for steel mills, cement mills, mining and foundry industry which covers rolling mill rolls & rings, welding pipe roller, roller shaft, mandrel bar and cardan shaft; CNC lathe machine, CNC notching and marking machine; High-frequency Welded Pipe Mill; coiling machine and hoisting equipment etc. https://www.sino-machinery.com/ Our History Our company has been in the metallurgical industry for more than 20 years. Product Market Our products has been supplied to 20 countries and regions including Southest Asia, Europe, North America and Middle East. Our Service We provide customers with professional product knowledge, guide customers to choose the most suitable products. Grooved Tungsten Carbide Roll Ring Tangshan Qinpeng Technology Rolling Mill Rolls Shipment Tangshan Qinpeng Technology Rolling mill rolls shipment

2. CNC Lathe Shipment The CNC lathe to customer has been ready and loaded in the container, here is the loading process photos.

3. Gear Shaft And Roll Rings Are Ready To Ship Tangshan Qinpeng Technology Rolling Mill Rolls Shipment Tangshan Qinpeng Technology Rolling mill rolls shipment Hardness test Cast iron roll The carbon content of cast iron rolls is about 2.5%—3.5%. According to the main materials, they can be divided into four categories: ordinary cast iron rolls, high nickel-chromium infinite chilled composite cast iron rolls, high chromium composite cast iron rolls and alloy ductile iron rolls. The common structures in cast iron rolls can be divided into three major categories: matrix, cementite, and graphite. The matrix structure is mainly intensite, ferrite, pearlite, bainite and martensite. Graphite generally has flakes in the form of cast iron. Two kinds of shape and spherical shape 1. Ordinary cast iron roll

4. Ordinary cast iron rolls can be divided into chilled cast iron rolls, medium and low alloy infinite chilled cast iron rolls, medium and low alloy nodular cast iron rolls, and chilled cast iron is a kind of cast iron obtained by using molten iron's own subcooling degree and mold surface chilling. The surface of the roller body is chilled to form a white mouth layer, which has high hardness and good wear resistance. Chilled cast iron rolls can be divided into three categories: non-nodular iron, nodular composite, and spherical core according to the manufacturing process and core material. Infinite chilled cast iron roll is a material between chilled cast iron and gray cast iron. There is graphite in the matrix structure of the working layer of the roll body, and there is no obvious dividing line between the working layer of the roll body and the core. Rubber rolls It is this kind of low-end roll. Ordinary cast iron rolls are mainly used for rolls for stacked thin plate mills, three-high Lauter plate mills, wire rod mills, bar mills and section steel mills. 2, high nickel chromium infinite chilled cast composite iron roll Infinite chilled cast iron is a material between chilled cast iron and gray cast iron. Infinite chilled cast iron roll body working layer set has evenly distributed graphite in the matrix structure, and the content of graphite goes from the surface of the roll body inward. As the depth increases, the hardness decreases Therefore, there is no obvious dividing line between the working layer of the roll body and the core. It is also called unbounded chilled cast iron roll. Infinite chilled cast iron roll material contains high chromium, nickel and molybdenum alloy elements. It is high nickel-chromium infinite chilled cast iron. Rolls are produced by full flushing (overflow method) or centrifugal compound casting process. There are a large number of carbides in the matrix structure of the working layer of the high nickel-chromium infinite chilled cast iron roll body, so it has high wear resistance. The presence of graphite in the matrix structure makes it have good heat resistance and is widely used. It is used as a finishing roll for wide, medium and heavy plate mills and strip mills. 3. High chromium composite cast iron roll The high chromium composite cast iron roll is made of high chromium white wear-resistant cast iron with 12-22% chromium as the outer layer of the roll body. Generally, nodular cast iron is used as the material of the roll core and roll neck. It is produced by centrifugal compound casting technology. High-alloy composite cast iron rolls. Due to the presence of

5. lath-shaped Cr7C3 eutectic carbides, chrysanthemum-shaped Mo2C-type eutectic carbides and granular Cr23C6 type secondary carbides in the matrix, high-chromium cast iron rolls have excellent wear resistance and are widely used Work rolls for roughing and finishing of hot-rolled strip continuous rolling mills, roughing and finishing work rolls for wide and medium-thick plate mills, and finishing rolling for small section and plate mills 4, alloy ductile iron roll Alloy ductile iron rolls have a uniform distribution of graphite from the roll body to the core, so they have high tensile strength, can withstand heavy loads, and have good wear resistance. The matrix structure is carbides and pearlite or needles. The alloy ductile iron rolls can be roughly divided into two categories according to the matrix structure of the roll body: pearlite ductile iron rolls and needle-shaped ductile iron rolls. Alloy ductile iron rolls generally adopt integral casting However, because of the high alloy content and high casting stress of the needle-shaped cast iron roll, the centrifugal compound casting process can be used to obtain the ideal comprehensive performance. Alloy ductile iron rolls have good thermal shock resistance and wear resistance, and are widely used as rolls for large blooming mills, section steel rolling mills, continuous bar rolling mills and large seamless tube rolling mills.