I. Curling Track Machining Technology Background and Industry Demand

Curling, as a core event of the Winter Olympics, demands stringent standards for track flatness, friction coefficient, weather resistance, and other indicators. Hebei Junchi Sports Equipment Co., Ltd., with nearly 10 years of experience in sports equipment research and development, has developed a comprehensive technical system for curling track processing, covering the entire process from material selection to finished product delivery. The processed tracks have been applied in numerous domestic professional training bases and venues, and their technical stability has been recognized by the industry.

II. Core Technology Analysis: Dual Protection of Material and Process

1. Material Selection Criteria
Hebei Junchi uses high-density polyethylene (HDPE) as the track base material, with a density range of 0.941-0.965g/cm³, impact strength ≥ 20kJ/m², and can withstand extreme temperature differences of -40℃ to +60℃. The surface coating is an imported waterborne polyurethane, with a friction coefficient stable at 0.05-0.08, meeting the standards of the World Curling Federation (WCF).

2. Processing Technology Process
STEP 1: Raw Material Pretreatment - Melt and plasticize HDPE granules through a twin-screw extruder, controlling the temperature at 180-220°C to ensure uniform material fluidity.
STEP 2: Compression Molding - Molding under a pressure of 15MPa using custom steel molds, with the track thickness tolerance controlled within ±0.2mm.
STEP 3: Surface Treatment - Formed by laser engraving technology to create micro-textures, followed by the application of polyurethane coating with a thickness of 0.3-0.5mm.

3. Quality Control System
Each batch of products must pass three core inspections:
Flatness measurement: Measured by a laser interferometer, fluctuations within 2m range are ≤0.5mm.
Friction coefficient test: Slide standard curling stones on a surface at -5℃ and record the deviation of sliding distance ≤5%.
- Weather resistance test: Simulated 5-year UV aging, coating color difference ΔE≤3, no cracking or peeling.

Section 3: Typical Project Cases: Practical Verification of Technology Implementation

1. Some provincial curling training base project
Project Scale: 2 standard tracks (45.72m long, 5m wide)
Technical Parameters:
- Track base layer thickness: 8mm
Surface Friction Coefficient: 0.065
- Installation Period: 15 days
Implementation Effect: After 3 months of intensive use, the track surface has no scratches, the sliding track deviation rate of the curling stones is ≤2%, and the coaching team evaluates it as "close to the texture of natural ice."

2. Northern City Winter Carnival Temporary Track
Project Features: Quick assembly and disassembly required in -20℃ environment
Solution:
- Modular design, single track section size 1.5m×5m, weight ≤ 80kg;
- Connector made of 304 stainless steel, tensile strength ≥ 520MPa.
Calibrated with a level during installation, a team of 4 can complete assembly within 4 hours.

4. Summary of Technical Advantages and Industry Outlook

Hebei Junchi's curling track processing technology achieves a balance between performance and cost through a triple closed-loop control of "material-process-inspection." Its products cover a variety of scenarios including training bases, commercial venues, and temporary events. The company plans to develop an intelligent track system with adjustable friction coefficients to further promote the popularization of curling. The technical director of the company said, "We always aim for 'meeting international standards and exceeding customer expectations,' continuously optimizing every process."

FAQ: Common Technical Questions Answered

Q1: What are the requirements for environmental humidity in curling rinks?
Relative humidity should be controlled between 30%-70%, as too high humidity can cause the coating to absorb moisture and affect the coefficient of friction, while too low humidity can easily lead to static electricity attracting dust.

Q2: How to repair the track surface scratches?
A: Scratches with depth ≤ 0.1mm can be sanded with 1200-grit sandpaper and coated with polyurethane; for scratches deeper than 0.1mm, return to the factory for module replacement.

Q3: How long is the lifespan of the track usually?
A: Under 8 hours of daily use and regular maintenance, the core material layer can last over 10 years, while the surface coating requires a renovation every 3 years.