Le ERW tube mill entry section<\/strong><\/a>\u00a0is the core upstream unit of the entire electric resistance welded tube production line, serving as the initial material feeding and pretreatment system that determines the stability, precision, and continuous operation efficiency of subsequent tube forming, high-frequency welding, and sizing processes. As the foundational equipment of ERW pipe making machine<\/strong>\u00a0systems, the entry section undertakes steel coil loading, uncoiling, strip leveling, shear\u001ebutt welding\u00a0and strip accumulating\u00a0tasks. A high-performance tube mill entry system<\/strong>\u00a0effectively eliminates material feeding fluctuations, ensures consistent strip flatness and tension, and lays a solid foundation for high-precision, high-speed, and low-defect steel pipe production. This article comprehensively introduces the composition, operational workflow, working principle, hydraulic system, and electrical control system of the ERW tube mill entry section, covering core technical advantages for global industrial buyers and manufacturers.<\/p>\n The modern ERW tube mill entry section<\/strong>\u00a0is an integrated automated production unit composed of multiple precision mechanical, hydraulic, and electrical devices, tailored for continuous carbon steel, stainless steel, and alloy steel tube manufacturing. Different from traditional decentralized feeding equipment, the integrated entry section features compact structure, high automation, and stable operation, perfectly matching high-speed ERW tube mill line<\/strong>\u00a0production requirements. Its core equipment configuration includes hydraulic un-coiler, coil peeler and hold-down device, strip flattener, hydraulic shear-butt welding machine, strip accumulator. Each device works in linkage to form a closed-loop continuous feeding system.<\/p>\n Every component of the entry section is designed to solve core pain points in tube production: coil uncoiling deviation, strip head warping, discontinuous material feeding, unstable tension, and inaccurate strip butt joint. It is an indispensable key unit for improving finished pipe roundness, weld seam uniformity, and production continuity in standard and heavy-duty ERW pipe production line<\/strong>\u00a0systems.<\/p>\n The operation of the tube mill entry system<\/strong>\u00a0follows a standardized, automated continuous process from coil loading to stable strip output, realizing uninterrupted feeding for downstream forming and welding sections. The complete workflow is divided into\u00a0six core stages<\/b><\/strong>, with seamless linkage between each step:<\/p>\n First, the steel coil is transported to the working position of the hydraulic un<\/strong>–<\/strong>coiler<\/strong>\u00a0via a coil car. The hydraulic expansion mandrel of the un-coiler accurately stretches and clamps the inner hole of the steel coil to fix the coil position, effectively preventing coil displacement and slippage during high-speed uncoiling. This step adapts to various coil specifications and meets the loading requirements of large-weight industrial steel coils.<\/p>\n After coil fixation, the peeler and hold-down roll device starts automatically to peel open the strip head with internal stress rebound, flatten the warped strip head, and guide the steel strip into the subsequent straightening unit. The hold-down roll maintains constant pressure on the strip surface to avoid bouncing and deviation during uncoiling, ensuring stable initial feeding status.<\/p>\n1. Overview & Core Equipment Composition of ERW Tube Mill Entry Section<\/b><\/strong><\/h2>\n
2. Complete Operational Workflow of ERW Tube Mill Entry Section<\/b><\/strong><\/h2>\n
2.1 Coil Loading and Positioning<\/b><\/strong><\/h3>\n
2.2 Automatic Uncoiling<\/a> and Strip Head Guiding<\/b><\/strong><\/h3>\n