High frequency welded pipe ERW roll machine

Roller unit in high frequency welded steel pipe (ERW), and other various roll machine is make (rolling) produce plastic deformation of metal tools, is important in determining the quality of efficiency and rolling mill consumption parts. Roll is one of the important parts on the rolling mill rolling mills, the use of a pair or a group of roll rolling pressure generated by rolling grinding steel. It mainly bear the movement when the rolling load, the influence of wear and temperature changes. Roll a lot of more phyletic, the current commonly used roll cast steel, cast iron roll and variety of roll forging roll three categories, the profile and a small amount of carbide roll mill. (a) molding methods: casting roll and roll forging; Carbon steel pipe casting roll refers to the smelting or melting molten iron directly pouring the kinds of roll forming the mode of production manufacturing. The casting roll according to the material and can be divided into two categories, cast iron roll and cast iron roll; According to the manufacturing methods and can be divided into the overall casting roll and casting roll. Forging roll according to the material classification is as follows: (1) the forged alloy steel roll; (2) forging semisteel roller; (3) forging semi high speed steel roll; (4) forged white cast iron roll. (2) according to the process: the overall composite roll and roll, metallurgical combination roll 1. The whole roll is relative to the compound roll, the roll of the roll and roll neck of outer layer and the core adopts single material casting or forging, roll the outer roll neck and different organizations, the performance by casting or forging process and heat treatment process to control and adjust. Static casting forging roll and roll all belong to the whole roll. The whole roll into the whole casting and forging of the whole roll two; 2. Metallurgy composite casting roll are mainly half flush composite casting, the overflow (irrigation) composite casting, the centrifugal composite casting three, in addition to Continuous casting coated (CPC - Continuous PouringProcess for Cladding), spray deposition, Hot isostatic pressing (HIP - Hot Isostatically Pressed), electroslag welding and other special manufacture compound roll type composite method. Composite roll roll is mainly set set of combinations. (3) according to the manufacturing material: cast steel roll series, series of cast iron roll and roll forging series (4) roll type is the most often used heat treatment: to stress annealing, isothermal spheroidizing annealing, normalizing, tempering, diffusion annealing, quenching, cryogenic treatment. Cangzhou vibration of roll have different classified method. According to the roll shape into the cylinder and the cylinder, the former is mainly used for plate, strip, profiles and wire production, high-frequency steel roll which is mainly used for structural steel pipe production unit.