Selecting the right machine tools like shearing machines, press brakes, and punching presses is a critical long-term investment. This guide outlines key steps—from defining your needs and verifying true manufacturers to evaluating suppliers—to ensure you acquire high-performance, durable equipment. Discover why choosing an integrated manufacturer like Nantong Suleiman Machinery, with in-house R&D and direct engineering support, safeguards your asset value and operational efficiency for years to come.

As a core equipment in the heavy equipment manufacturing sector, the performance of plate rolling machines directly impacts production standards in industries such as energy, shipbuilding, and chemical engineering. This article introduces Jiangsu Suleiman Machinery Co., Ltd., showcasing how its robust manufacturing foundation—featuring large-scale, high-precision equipment like 12-meter CNC floor-type boring and milling machines and 20-meter gantry machining centers—enables the production of a comprehensive range of plate rolling machines. These include mechanical, hydraulic, CNC, and shipbuilding-specific models. With extensive applications in wind turbine towers, ship hull processing, and pressure vessels, the company provides highly reliable, customizable metal sheet forming solutions aligned with China's "Manufacturing 2025" industrial upgrade. Leveraging its complete process equipment, mature technical systems, and strong heavy-duty manufacturing capabilities, the company stands as a valuable partner for global clients.

This document details the comprehensive structure and operational principles of the top-roll universal CNC three-roll plate bending machine, incorporating advanced technology introduced from Japan and refined through years of domestic development. The machine is composed of several key systems: the main drive system, lower roll and horizontal movement components, upper roller assembly, idler assembly, tipping device, frame, base, and balancing device. Each component is engineered with high-performance materials—such as high-quality carbon steel and 42CrMo alloy—and precision treatments like quenching, tempering, and shot peening to ensure durability, high surface hardness (HRC 48–62), and operational reliability across diverse industrial applications.

Three-roll plate bending machines come in mechanical and hydraulic types, primarily with symmetrical or asymmetrical designs. Mechanical Symmetrical: The upper roll moves vertically between two driven lower rolls. A key limitation is that plate ends require pre-bending on separate equipment. Mechanical Asymmetrical: Its asymmetric design allows the side roll to perform both pre-bending and rolling, offering greater versatility in a compact form. Hydraulic Symmetrical: Uses hydraulic power for movement, often includes a drum-shaped upper roll for better precision on long plates, and can perform pre-bending.

This article details the key differences between three-roll and four-roll plate bending machines.The core distinctions are that three-roll machines (symmetrical and asymmetrical) are mechanically simpler and more affordable but often require separate equipment for pre-bending plate ends and offer lower automation.In contrast, four-roll machines are fully hydraulic with CNC systems,enabling high automation by performing pre-bending and complete rolling on a single machine.This results in superior processing accuracy,efficiency,and final workpiece quality,though at a higher price point.The choice depends on budget, production needs,and required precision.

This document outlines the composition and key features of an upper-roll universal CNC three-roll plate bending machine, which is based on technology introduced from Japan. The machine's main structure consists of several critical assemblies: the main drive system, which provides forward and reverse working power; the lower rollers and horizontal movement mechanism for feeding and pre-bending plates; the drum-shaped upper roll for deflection compensation; the adjustable support roll assembly; and a tilting mechanism for easy workpiece removal. Key components like the rolls are manufactured from high-grade materials (such as 42CrMo and carbon steel) and undergo heat treatment like quenching and tempering to achieve high surface hardness and durability, ensuring robust performance across various industrial applications.

A plate rolling machine performs continuous bending to form metal sheets into cylinders. While efficient, standard symmetrical three-roll models leave straight "dead edges" on the workpiece, which the pre-bending function is designed to eliminate, streamlining production. This robust machine, built with critical forged steel rolls and a rigid frame, is controlled by a reliable electrical system and is indispensable in key industries like boiler manufacturing, shipbuilding, and petroleum engineering for creating cylindrical components.