0.3-3.0×2000 Slitting Line

Basic Equipment Parameter Table

3. Detailed Equipment Description

(1) Overall Functional Positioning & Processing Scope

1. This 2000mm ultra-wide longitudinal slitting line is specially designed for thin and medium metal sheet slitting production, with a processing thickness coverage of 0.3mm to 3.0mm and a maximum raw coil width up to 2000mm. Different from conventional narrow slitting equipment, it supports ultra-wide raw material coils, which can greatly reduce the frequency of raw material welding and cutting, and improve the overall utilization rate of metal raw materials. The equipment is widely applicable to stainless steel strips, cold rolled carbon steel, galvanized sheets, aluminum coils and other thin metal materials, serving industries including precision hardware, automotive parts, decorative materials, solar panel brackets and packaging steel belts.
2. The whole line is a complete set of second-hand metallurgical processing equipment independently produced by Foshan Shenying Machinery, with all original structural components intact and no missing core functional units. It is equipped with a dedicated 5-roller leveling unit, which solves the problem of warping, bending and uneven surface of thin metal coils, a common defect of simple slitting lines without leveling function. All supporting DC motors, digital DC controllers, operation console, slitting cutter sets and mechanical auxiliary arms are fully matched. After complete circuit inspection, hydraulic system debugging and motor calibration, the equipment can be put into continuous mass production after connecting power and water supply on site, avoiding the long delivery and installation cycle of brand-new customized equipment.

(2) Full Z4 Series DC Drive System Configuration Details

1. Every driving unit of this slitting line adopts industrial standard Z4 series separately excited DC motors, which are produced by professional motor manufacturers including Xi’an SIMO, Yangzhou Nanyang and Wuxi Shengling. Separately excited DC motors feature stable low-speed high torque, wide stepless speed regulation range and strong overload resistance, which perfectly match the variable load characteristics of thin sheet slitting. Each motor is equipped with independent 590 DIGITAL DC digital controllers, realizing closed-loop tension control, synchronous speed linkage and real-time torque feedback of all stations, ensuring coordinated and stable operation of the whole line without speed deviation or material tension fluctuation.
2. Core slitting station: The slitting main shaft is fitted with Z4-225-11 75kW DC motor, with dual speed ratings of 1000rpm and 2000rpm. Matched with Ø180mm solid slitting shaft, the shaft body has sufficient rigidity, effectively suppressing radial runout during high-speed cutting, ensuring consistent slitting width tolerance and smooth burr-free cutting edges for thin strips. The motor adopts F-class insulation and IP21S protection grade, with independent air cooling structure, capable of long-time continuous cutting operation without overheating.
3. Front-end uncoiling unit: Powered by Z4-180-21 30kW DC motor, rated speed 1000-2000rpm. It provides stable unwinding tension for wide and thin raw coils, preventing thin plates from wrinkling, scratching or slipping during feeding, and realizes smooth and uniform material release for ultra-wide coils.
4. Middle pinch traction unit: Driven by Z4-132-2 15kW DC motor with a wide speed range of 1510-2500rpm. The pinch roller clamps thin plates tightly to provide stable traction force, corrects material lateral deviation in real time, and transmits flat plates to the leveling and slitting sections, avoiding material arching and deviation caused by thin sheet low rigidity.
5. 5-roller leveling unit: Equipped with Z4-180-31 37kW DC motor at fixed rated speed 1000rpm. Five groups of leveling rollers conduct multi-point repeated flattening on warped thin metal plates, eliminating internal stress of coils and completely improving plate flatness; this leveling configuration is the core advantage of this line for processing ultra-thin metal materials.
6. Rear finished recoiling unit: Adopts high-power Z4-250-42 144kW DC motor, speed adjustable from 900 to 2000rpm. It provides large adjustable winding tension for multi-layer thin strip stacking and winding, effectively preventing finished coils from loose winding, end face staggering and collapse, and keeping the finished roll neat and compact for subsequent storage and transportation.

(3) Processing Performance & Unique Production Advantages

1. Ultra-wide processing capacity: The maximum feeding width reaches 2000mm, which can process large-format wide coils directly, greatly reducing the waste generated by cutting narrow raw materials in advance, improving raw material utilization rate and lowering material cost for manufacturers. The thickness range covers ultra-thin 0.3mm thin foil to medium 3.0mm steel sheet, covering diversified production demands of multiple metal processing factories.
2. Integrated leveling design: Equipped with independent 5-roller leveling machine, which is absent in many low-cost simple slitting lines. For thin metal coils that are prone to bending and warping, the five-roller repeated flattening process removes coil stress fundamentally, and the flatness of finished strips is significantly improved, eliminating secondary leveling procedures and saving labor and equipment investment.
3. Digital DC linkage control system: The whole line is equipped with multiple sets of 590 DIGITAL professional DC digital controllers, which realize synchronous speed linkage of uncoiler, leveler, slitter, pinch roller and recoiler. The tension of each station can be precisely adjusted on the operation panel, effectively solving the problems of thin strip stretching, breaking and wrinkling caused by inconsistent tension during high-speed production.
4. Stable high-precision slitting performance: The Ø180mm thickened slitting shaft cooperates with complete sets of slitting cutter discs and wear-resistant spacers. Operators can freely combine cutter groups to produce strips of various customized widths. The mechanical pressing and lateral limiting devices lock thin plates tightly during cutting, avoiding vertical jump and horizontal offset of ultra-thin materials, and the cutting edge is smooth without flanging, reducing post-processing polishing workload.

(4) Mechanical Structure, Control System & Supporting Spare Parts

1. Machine frame structure: The main body is welded with thickened steel plates and treated with stress relief to resist long-term heavy load deformation. The whole machine is coated with anti-rust industrial paint, with thick reinforcing ribs set on all bearing beams and base supports to enhance impact resistance and load capacity. Hydraulic swing arms and pressing brackets are arranged along the line to automatically complete plate lifting, limiting and unloading, reducing manual intervention and improving operation safety for thin sheet processing.
2. Independent physical button operation console: The dedicated control panel is manufactured by Foshan Shenying Machinery, integrated with physical rotary buttons, emergency stop buttons, tension adjustment knobs and function switches for uncoiling, leveling, slitting and recoiling. The functional layout is classified clearly, and operators can complete speed adjustment, tension setting, equipment start-stop and fault emergency stop without complicated touch screen operation; simple training is enough to master daily production and cutter replacement debugging.
3. Independent electrical control cabinet: The whole line is equipped with a complete set of sealed electrical cabinets, internally equipped with matched 590 DIGITAL DC controllers, circuit breakers, wiring terminals and cooling fans. The wiring is standardized and classified, with high safety protection level, effectively isolating dust, oil and metal debris generated during slitting production, reducing electrical failure rates and extending the service life of drive components.
4. Complete supporting spare parts: The machine is delivered with full sets of original slitting cutter discs, wear-resistant spacing sleeves, positioning gaskets, mechanical support arms, connecting pin shafts and other vulnerable parts. All Z4 series DC motors are intact with complete nameplate parameter information, and no additional motor replacement or cutter procurement is required in the early stage of production, greatly cutting the daily operation and maintenance cost of the factory.