Metal coils are commonly used raw materials in the processing industry. They are easy to transport and store, but cannot be directly used for subsequent processing such as stamping, bending, and laser cutting. They need to be unwound and cut into sheets of the required length. Currently, some small-scale sheet metal factories, hardware processing plants, and auto parts factories still use manual or simple equipment to unwound and cut the coils. This is not only inefficient and inaccurate, but also prone to scratching the sheets, posing significant safety hazards and generating a lot of waste. Advanced steel coil cutting machines aim to solve the core problems of these manufacturers, addressing the key challenge of unwinding and cutting coils.

This article will detail how metal coils are unwound and cut into high-precision metal sheets using a metal coil cutting machine, helping manufacturers reduce costs and increase efficiency.

Complete Process of Opening and Cutting Metal Coils

Step 1: Coil Loading + Opening

- Process Details: The steel coil cutting machine is equipped with a loading trolley used to load the decoiler, transporting the steel coil from the storage platform to the decoiler's reel. The trolley's movement is controlled by a hydraulic motor, and its lifting is controlled by a hydraulic cylinder. This minimizes manual labor. The loading trolley places the metal coil onto the decoiler of the metal coil cutting machine, clamping and unwinding it to achieve tension uncoiling. The decoiler tightens the drum to secure the coil, preventing uncoiling and misalignment during uncoiling.

- KINGREAL Steel Coil Cutting Machine Core Advantages: The decoiler consists of a frame, drum, transmission system, expansion and contraction system, pressing system, tension system, lubrication system, and hydraulic system. The expansion and contraction system controls the expansion and contraction of the drum; the pressing system presses the coil head to prevent rebound and loosening; and the hydraulic support supports the decoiler spindle head, preventing sagging and enhancing the decoiler's load-bearing capacity. This decoiler is designed to handle coils weighing up to 20 tons, with an inner diameter of Φ508mm and an outer diameter of Φ1800mm.

Step 2: Coil Leveling

- Process Details: After uncoiling, the coiled material passes through the leveling machine on the metal coil cutting machine. Multiple leveling rollers flatten the material, eliminating curling and warping, ensuring a smooth surface to meet subsequent cutting precision requirements.

- KINGREAL Steel Coil Cutting Machine Core Advantages: KINGREAL can provide four- or six-high roller leveling machines for metal coil cutting machines, or even equip them with two leveling machines, depending on the customer's requirements for material flatness precision. Each leveling roller undergoes precision machining, tempering, chrome plating, and grinding to ensure surface hardness and smoothness, achieving the best leveling effect. The leveling rollers are independently driven by a distribution gearbox via universal couplings, allowing for forward and reverse operation.

Step 3: Length Setting + Cutting

- Process Details: The leveled sheet material is pulled forward by the steel coil cutting machine's feeding device. The length setting mechanism measures the length in real time. When the preset size is reached, the electrical control system sends a signal, and the cut-to-length machine completes the shearing.

- KINGREAL Steel Coil Cutting Machine Core Advantages: Based on customer project needs, KINGREAL can design various shearing methods for the machine, including flying shear, swing shear, rotary shear, and fixed shear. The metal coil cutting machine is used to cut boards of a fixed length measured by an NC calibrator. It uses a hydraulic motor for shearing, resulting in high shearing speed; the blade gap can be manually adjusted when cutting boards of different thicknesses. The four-sided shears have interchangeable blades for maximum economic efficiency.

Step 4: Finished Product Stacking

- Process Details: The cut finished boards are automatically stacked by the steel coil cutting machine's stacker.

- KINGREAL Metal Coil Cutting Machine Core Advantages: The automatic stacker can automatically adjust the stacking height according to the board size and weight, preventing damage from bumps and scratches. Furthermore, the stacker can be designed as either a gantry or open type. Double stackers can also be equipped for customers with high-efficiency production needs.

KINGREAL Steel Coil Cutting Machine Core Competitiveness

(1) Rich Manufacturing Design Capabilities

KINGREAL has over twenty years of rich experience in metal coil cutting machine design and manufacturing. The team is familiar with the processing needs of roll materials in different scenarios and can provide customized steel coil cutting machine solutions. They have developed various types of metal coil cutting machines, including fly shearing cut to length lines, start-stop shear cut to length lines, rotary shear cut to length lines, high speed cut to length lines, heavy gauge cut to length lines, medium gauge cut to length lines, and light gauge cut to length lines. They can also equip steel coil cutting machines with laminating devices according to customers' specific production needs. Metal coil cutting machines can be fully customized according to customers' production capacity, roll material specifications, and cutting precision requirements, adapting to multiple industries such as metallurgy, automotive manufacturing, and home appliance production.

(2) Successful Projects

KINGREAL has tailored and delivered compact cut to length lines for two Russian customers. Relying on mature equipment configuration and stable operating performance, it fully meets the customers' conventional sheet metal shearing needs. Simultaneously, considering the actual pain points of local industrial production conditions, sheet thickness, and production capacity planning in Indonesia, they specifically optimized the structural configuration and designed a customized heavy gauge cut to length line solution, successfully completing equipment production and delivery. With reliable metal coil cutting machine quality and professional customization services, they have won high recognition from overseas customers.

(3) Advantages of Full-Process Service

- Pre-sales: KINGREAL will invite customers to visit the factory to tour the metal coil cutting machines and provide full-service explanations. Then, a customized steel coil cutting machine manufacturing solution will be designed based on the customer's actual project needs.

- During sales: KINGREAL professional team is responsible for metal coil cutting machine manufacturing, and the team will regularly provide updates on the latest progress. After the steel coil cutting machine is completed, the customer will be invited to inspect it.

- After-sales: After the metal coil cutting machine is manufactured, KINGREAL can send professional engineers to the customer's factory for machine installation and operation training. We will also respond to the customer's latest questions at any time, providing spare parts supply, machine fault inspection, and other services.

The key to opening and cutting metal coils into sheets lies in choosing a professional steel coil cutting machine. With over 20 years of manufacturing and design experience, a wealth of successful projects, and high-quality metal coil cutting machines and services, KINGREAL provides customers with one-stop coil processing solutions. Contact KINGREAL now to get your personalized steel coil cutting machine solution!