Guangdong Quanqi Machinery & Equipment Co., Ltd.
Roll-changing six-unit precision leveling stand
The Six-Stage Precision Leveler (Six-Stage Precision Straightener) is a high-precision sheet metal leveling device that builds upon the four-stage model. Its core feature is a six-roll configuration—three rolls each on the upper and lower sides (support rolls + intermediate rolls + working rolls)—which uses intermediate rolls to evenly distribute support forces and reduce deflection of the working rolls. This design is ideally suited for thin to medium-thick metal sheets with stringent surface and precision requirements, achieving leveling accuracy down to the micrometer level.
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Product Details
The Six-Stage Precision Leveler (Six-Stage Precision Straightener) is a high-precision sheet metal leveling device that builds upon the four-stage model. Its core feature is a six-roll configuration—three rolls each on the upper and lower sides (support rolls + intermediate rolls + working rolls)—which effectively distributes support forces via the intermediate rolls, reducing deflection of the working rolls. This machine is ideally suited for thin to medium-thick metal sheets with stringent surface and precision requirements, achieving leveling accuracy down to the micrometer level.
Core structure
Upper and lower symmetrical arrangement; each layer includes a support roll (to resist deformation), an intermediate roll (for force transmission/protection), and a work roll (in direct contact with the sheet material). There are a total of six sets, coordinated with hydraulic/servo adjustment, a drive system, and a locking mechanism.
Working principle
The sheet metal is repeatedly bent through multiple sets of rolls, gradually relieving internal stresses and aligning fiber lengths. The roll gaps increase progressively from the inlet to the outlet to correct irregular bending. Intermediate rolls are designed to prevent direct support forces from acting on the working rolls, thereby reducing surface indentations.
Key configuration: The work roll typically uses 9Cr2MoV steel, with fine grinding followed by hard chrome plating. Optional features include hydraulic automatic pressure adjustment, CNC control system, and quick-change roll mechanism, supporting both coil and sheet material modes.
Core Performance and Applicable Scenarios
|
Project |
Typical parameters |
Core advantages |
Applicable Materials/Scenarios |
|
Board thickness |
0.3–4.0 mm |
Minimal surface damage, high leveling accuracy |
Aluminum/Stainless Steel/Copper/Composite Panels; Metal Sheets with Printed/Plated/Polished Surfaces |
|
Standard width |
400–1500 mm |
High rigidity, with minimal deflection of the work roll. |
Automotive parts, electronic housings, precision stamped parts |
|
Leveling accuracy |
Micrometer-level |
Eliminates waviness, warping, and camber. |
Post-process bending/welding/precision stamping with high flatness requirements |
|
Load adaptation |
Suitable for medium-thin to medium-thick plates |
Smooth transmission, low noise |
Precision manufacturing in new energy, aerospace, home appliances, and other fields |
Selection and Operation Key Points
Selection criteria: Match the model based on plate thickness, width, and material (e.g., select small-diameter work rolls for soft aluminum), surface requirements (high-gloss surfaces must use intermediate-roll structures), and production mode (coil materials require unwinding/feeding lines).
Operating Procedures: Before starting up, calibrate the roll gap and ensure horizontal alignment; clean the roll surfaces to prevent indentation. Adjust the pressure according to the material’s yield strength: apply low pressure at a slow speed for thin and soft materials, and gradually increase the pressure for thick and hard materials. After leveling, securely lock the roll assembly and regularly inspect the roll surfaces for wear and lubrication.
Key maintenance points: The quick-release roll-changing design enables rapid cleaning; regularly inspect the clearance between the support rolls and intermediate rolls to prevent uneven stress distribution; periodically change the hydraulic system’s oil and bleed air to ensure stable pressure.
Compared with other models
|
Model |
Structure |
Surface protection |
Leveling accuracy |
Applicable plate thickness |
|
Six-roller precision leveling machine |
6-fold (support + intermediate + working) |
Excellent (middle roller isolation) |
Micrometer-level |
0.3–4.0 mm |
|
Four-roller leveling machine |
4-roll (working + supporting) |
General |
0.01 mm level |
0.5–6.0 mm |
|
Double-action leveling machine |
2-roll |
Poor |
0.1 mm level |
Thick plate / Low-precision requirements |
Product Applications
Specialty Metals & Composite Materials Processing
Aerospace components, medical devices, and chemical container materials.
Titanium alloys, nickel-based alloys, and composite metal plates—highly complex machining is performed using blades made from special materials (such as cemented carbides and ceramic coatings) and heavy-duty leveling machines.
Precision Electronics AndElectrical Appliances
Transformer core, motor stator and rotor laminations, heat sinks, conductive connectors.
Silicon steel sheets, electrolytic copper strips, and alloy foils → Leveling machine (to relieve internal stress and ensure electromagnetic performance) → Slitting machine (for ultra-precise edge trimming with no burrs) → Flying shear (for fixed-length cutting)
New Energy Applications
Wind power: Thick steel plates—after being leveled—are used for the manufacture of tower sections and components.
Lithium batteries: Ultra-thin copper and aluminum foils are slit with extremely high precision by slitting machines—this is the core process. Leveling machines and flying shear machines may be used in the processing of casing materials. Photovoltaics: Aluminum frame profiles are rolled → leveled → slit → then sheared into flying shear mode to produce frame segments.
Automotive & Auto Parts Manufacturing
Body panels (doors, hoods), structural components (bumpers, chassis parts), seat frames, etc.
High-strength steel and aluminum alloy coils → Leveling machine (for precision leveling, critical for stamping) → Slitting machine (provides coil stock of specific widths for various parts such as door inner panels and longitudinal beams) → Flying shear (supplies fixed-length sheet metal for large-scale stamping lines).
Architecture & Building Materials Industry
Steel structural roofing/wall panels, curtain wall panels, and ceiling profiles.
Color-coated steel sheet, aluminum-magnesium-manganese coil, stainless steel coil → Leveling machine (corrects edge waviness) → Slitting machine (cuts into widths required for roof panels and wall panels) → Flying shear machine (cuts to fixed lengths for on-site installation)
Home Appliance Housing & Component Manufacturing
The outer shells and internal structural components of refrigerators, washing machines, air conditioners, and microwave ovens.
Cold-rolled steel sheet, galvanized sheet, and color-coated coil → Leveling machine (ensures a smooth and aesthetically pleasing surface) → Slitting machine (cuts into strips of varying widths for refrigerator door panels, side panels, and other components) → Flying shear (cuts the sheets into specified lengths) → Stamping/bending.
Company Advantages
Factory-Direct Supply of Equipment & Tooling Accessories
Guangdong Quanqi specializes in slitting machines and flying shear machines, and offers core products including disc blades from Nanjing Chenran, as well as a comprehensive range of cross-cutting blades and accessories, thereby building a full-industry-chain product system.
Core Technical Specifications
Our full-suite of high-end machining centers ensures the precise manufacturing and assembly of every equipment component. With mature production processes and precision grinding machines, we produce highly accurate disc blades that meet the cutting requirements for various types of sheet materials!
Extensive Production Experience
Quanqi’s 20,000-square-meter production base; Chenran’s 15 years of industry experience—both companies boast mature production systems.
Market & Customer Recognition
Chenran boasts a customer loyalty rate of 92% and collaborates with renowned companies such as Foxconn and Hisense. Quanqi’s products are exported worldwide, and Chenran’s market coverage spans multiple regions including China, Southeast Asia, and Europe.
Professional Team & Responsive Service
Quanqi boasts a professional technical and production team of over 250 members, offering 24-hour emergency services (with a 12-hour response time within the province); Chenran in the Pearl River Delta provides rapid response within 2 hours, ensuring end-to-end service support.
Customer inspection
Quanqi Machinery boasts a modern production base covering 20,000 square meters, equipped with multiple imported CNC machining centers. Key components, such as load-bearing frames, undergo tempering and reprocessing to ensure superior durability. Gears are precision-machined through hobbing, gear grinding, and nitriding processes, thereby optimizing equipment lifespan and performance right from the manufacturing stage. In terms of personnel, our team comprises 15 core designers, 25 senior fitters, 20 specialized installation and commissioning technicians, and over 250 highly skilled technical and production staff, providing robust human resources support for the entire production process.
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Address: Unit 106, Building 20, Shunlian Machinery City, Shunde District, Foshan City, Guangdong Province, China.
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