In the competitive landscape of metal processing, achieving consistent, high-precision slitting while optimizing capital expenditure is paramount. Our meticulously refurbished Tengqi 2011 Model 0.3-6.0×1850 Double Tool Holder Slitting Line, offered as a second hand 1850 slitter, represents an exceptional opportunity to acquire industrial-grade capability at a fraction of the cost of new machinery. This used slitting line transcends its classification, delivering performance that rivals new installations, particularly excelling as a high precision slitter for thin gauge materials. Engineered for robust operation and sustained accuracy, it stands ready to elevate your production efficiency and product quality.
I. Core Engineering & Operational Capabilities
This second hand 1850 slitter embodies robust design tailored for precision and versatility:
Dual Tool Holder System & Precision Focus:
Optimized Power: Twin tool holders, each powered by a substantial 90kW motor, provide ample torque for demanding slitting operations across the full material thickness range (0.3mm to 6.0mm).
Dedicated Shafts for Enhanced Accuracy: Unique configuration featuring two distinct tool shaft diameters (220mm and 260mm). This allows operators to dedicate specific shafts to either thick or thin material processing. This specialization is crucial for achieving the high precision slitting performance, especially on ultra-thin materials (≤ 0.3mm), minimizing deflection and vibration for superior cut quality.
Seamless Winding Power: Driven by a potent 132kW motor, the winder ensures consistent tension control and smooth, high-integrity coil formation at operational speeds, critical for downstream processes.
Material Compatibility & Standards Compliance:
Primary Material: Expertly processes hot-rolled low-carbon steel coil, a staple in numerous industrial sectors.
Dimensional Range: Handles coil widths from 700mm to 1000mm and material thicknesses from 1.2mm up to 4.0mm (with the core slitter capable of 0.3-6.0mm).
Coil Handling: Accommodates incoming coil diameters ranging from Ø900mm to Ø1900mm, with a maximum coil weight capacity of 22,000 kg.
Quality Assurance: The processed slit strips meet all current applicable national technical standards, ensuring your outputs integrate seamlessly into regulated supply chains.
Unparalleled Precision Slitting Performance:
Exceptional Thickness Accuracy: Achieves remarkable tolerances: ±0.01mm for materials ≤ 0.3mm thickness and ±3% of thickness (δ) for materials > 0.3mm. This high precision slitter consistently maintains thickness variations ≤0.005mm under optimal conditions.
High-Speed Operation: Capable of slitting speeds up to 730 meters per minute for thinner gauges (0.2–0.8mm), maximizing throughput for applicable jobs.
Advanced Process Control: Micron-level tolerances are realized through sophisticated PLC-controlled tension systems governing the entire line, ensuring uniform strip quality from entry to recoiling. Clean, burr-free edges are a hallmark of its output.
II. Robust Mechanical Foundation & Critical Subsystems
The longevity and precision of this second hand 1850 slitter are underpinned by its heavy-duty construction:
Roll Stack Configuration:
Work Rolls: Ø300–270mm x 1150mm (precision ground for surface finish).
Intermediate Rolls: Ø370–340mm x 1150mm (incorporating axial shifting capability).
Backup Rolls: Ø950–900mm x 1100mm (providing essential rigidity and support).
Roll Control Mechanisms:
Bending Force: 350 kN / 210 kN (single-side adjustment) for precise crown and flatness control.
Intermediate Roll Shift: 200mm of travel, enabling effective profile management across the strip width.
Hydraulic System:
Roll system operation: 12–18 MPa
General functions: 10 MPa
Ensures responsive and powerful actuation for all critical movements and clamping functions.
III. Engineered Safety, Efficiency & Sustainability
Operational reliability and responsible resource use are integral to this used slitting line:
Safety Systems:
Fail-Safe Braking: Integrated high-performance braking systems.
Deceleration Capability: Emergency Stop Deceleration: 3.0 m/s² / Quick Stop Deceleration: 2.0 m/s². Ensures rapid machine halting under fault conditions.
Threading Speed: Safe material threading at a controlled 18 m/min.
Cooling & Lubrication:
Emulsion-based system delivering a high flow rate of 4,500 Liters per minute for effective roll cooling and lubricity during slitting.
Sustainable Design: Incorporates closed-loop emulsion recycling, significantly reducing coolant consumption and environmental impact while lowering operational costs.
Auxiliary Components:
Saddle Rolls: Ø400mm x 1150mm
Bridle Rolls: Ø200mm x 900mm (providing tension isolation).
IV. The Compelling Value Proposition of Refurbished Excellence
Choosing this second hand 1850 slitter offers distinct strategic advantages:
Significant Capital Savings: Realize approximately 40% cost savings compared to procuring and installing a brand-new slitting line of equivalent capability. This dramatically improves ROI and frees capital for other strategic investments.
Proven Reliability & Depreciated Risk: Any inherent manufacturing or early-life issues have been resolved during its previous service. The machine arrives with a demonstrable track record of performance in industrial environments, offering greater predictability than unproven new equipment.
Immediate Production Readiness: Unlike the long lead times often associated with new machinery orders, a professionally refurbished used slitting line like this can be deployed into your production flow much faster, minimizing downtime and accelerating time-to-value.
Sustainably Conscious Choice: Opting for high-quality refurbished industrial equipment like this high precision slitter promotes circular economy principles by extending the productive lifecycle of valuable machinery, reducing the demand for new resource extraction and manufacturing emissions.
V. Diverse Industrial Applications
This versatile second hand 1850 slitter finds critical application across numerous sectors demanding precision slit metal:
Steel Service Centers: Primary slitting of large master coils into narrower customer-specific widths for distribution and further fabrication.
Automotive Manufacturing: Producing precise slit strip for chassis components, reinforcements, seat frames, and other parts where dimensional consistency and edge quality are critical (leverages its high precision slitter capability).
Construction & Building Products: Manufacturing roofing, cladding profiles, framing components, and structural elements requiring accurately dimensioned strip.
Appliance Manufacturing: Supplying slit coil for enclosures, panels, internal brackets, and housings in white goods and other appliances.
HVAC & Ductwork: Producing strip for forming into ducting, vents, and related components.
Furniture & Fixtures: Providing material for metal frames, shelving, and display systems.
