Dual-Column Ultra-Thin Multi-Wire Saw: High-End Stone Cutting Solution
The Hualong Machinery HLMW-100/150 Ultra-fine Diamond Multi-wire Saw, featuring a dual-column structural design, stands as a benchmark machine in the field of high-end stone processing. Addressing the specific cutting challenges associated with precious stones-such as Carrara White, Carrara Grey, and Emerald Green-Hualong Machinery has achieved a breakthrough in high-end stone cutting quality. Through a comprehensive, multi-dimensional optimization of wire saw selection, process parameters, and auxiliary systems, the company has successfully suppressed issues like edge chipping and surface scratching to a controllable minimum, thereby perfectly preserving the natural texture and luster of the stone. The specific solutions implemented are detailed below:
I. Precision Selection: Fine-Diameter Wire Saws Enable Maximum Yield
The core configuration focuses on fine-diameter diamond wire saws ranging from 0.35mm to 0.5mm (with the equipment capable of accommodating wire specifications between 0.3mm and 0.8mm). These wires are paired with fine-grit abrasives (80–100 mesh / 150–200 μm) to minimize cutting impact at the source, thereby completely eliminating the risk of texture cracking often associated with coarser-diameter wire saws. For ultra-thin, high-end stone slabs ranging from 2mm to 5mm in thickness, the 0.35mm wire saw is the preferred choice; it allows for strict control of the cutting kerf width to within 0.4mm, thereby maximizing the conservation of precious raw stone materials and achieving a dual optimization of resource utilization and cutting performance
II.Rigidity Empowerment: Precision Transmission Ensures Flat Cutting Surfaces
The equipment features a high-rigidity dual-column frame structure with a crossbeam deflection controlled to within ≤0.01mm/m. This is coupled with an Inovance servo system and a ball screw transmission mechanism (featuring a lead error of ≤0.003mm/300mm), which precisely locks the flatness of the cutting surface within a tolerance of ±0.1mm-fundamentally eliminating the potential for surface undulation issues during stone splicing. Furthermore, the machine incorporates a low-vibration design that achieves a noise reduction of 40dB and limits wire saw vibration amplitude to ≤0.008mm. This effectively protects the surfaces of light-colored, high-end stones from vibration-induced damage, providing robust technical support for high-quality stone splicing processes. III. Tension Control: Patented Technology Enables Non-Destructive Cutting
The intelligent tensioning system maintains cutting tension at a stable 130–150 N (10% lower than standard stone cutting tension). Combined with Hualong Machinery's proprietary patented wire-winding technology, this ensures that the wire saw breakage rate approaches zero. With a dynamic tension compensation response time of ≤50 ms, the system automatically applies an additional 0.5–1 N of tension when encountering hard crystalline materials. This precisely prevents localized overloading and edge chipping issues, thereby ensuring cutting stability across stones of varying textures.
IV. Graded Speed Control: Adapting to Stone Characteristics Throughout the Process
Leveraging variable frequency control technology, the system achieves intelligent, graded adjustment of the feed rate:
Soft, high-grade marble (e.g., Calamari, Carrara): Cutting speed is set to 25–30 m/s.
High-grade marble containing hard crystals: Cutting speed is reduced to 25–28 m/s to prevent high-speed cutting from damaging the stone's natural texture.
Additionally, the system features an automatic wire-replacement mechanism that replaces the cutting wire every 800–1000 meters. This ensures uniform abrasive cutting force, minimizes texture tearing, and strikes an optimal balance between operational efficiency and cutting quality.
V. Phased Speed Management: "Soft Reversal" Technology Enhances Cutting Safety
The system employs a three-stage feed rate control strategy to prevent stress-induced damage to the stone throughout the entire process:
1. Initial Stage: Cutting begins at a low speed of 50–80 mm/h to gradually release surface stress and prevent surface chipping.
2. Mid-Stage Stabilization: The feed rate is adjusted to 150–200 mm/h to achieve efficient and stable cutting.
3. Finishing Stage: The speed is reduced to 80–100 mm/h. Combined with "Soft Reversal" technology, this significantly reduces the probability of chipping at the bottom of the stone and cracking at the corners.
VI. Intelligent Monitoring: Precision Control for Reduced Loss and Enhanced Efficiency
Equipped with a load monitoring function, the system allows for flexible setting of cutting force thresholds based on the specific characteristics of the stone (5–8 N for soft stone; 8–12 N for crystalline stone). When cutting force exceeds a predetermined threshold, the system automatically reduces the feed rate by 0.2–0.3 mm/min, precisely preventing overload damage caused by variations in stone texture and hardness. Through comprehensive, precision-controlled management across the entire process chain, the rate of stone chipping is effectively suppressed to below 3%, thereby delivering a high-quality, low-loss end-to-end solution for the processing of premium stone materials.