Introduction: The technical threshold of the curling track is hidden in the 0.01 coefficient of friction.
The sensitivity of curling to the track friction coefficient is comparable to that of precision instruments—the friction coefficient increasing by 0.01 can potentially shorten the sliding distance of the curling stone by 2-3 meters, directly affecting the outcome of the game. However, traditional track materials are easily affected by temperature and humidity, causing the friction coefficient to fluctuate by more than 15%, becoming a technical bottleneck that restricts the fairness of the competition. Hebei Junchi Sports Equipment Co., Ltd. has developed a dynamic friction coefficient control system through nearly 10 years of technical research and development, compressing the fluctuation range to within 3%. This technical solution has been applied to the curling venue of the 2022 Beijing Winter Olympics. This article will decompose the technical path and provide practical parameter standards and operational guidelines.

Keywords: Curling track; Coefficient of friction control; Dynamic monitoring system; Hebei Junchi; Sports equipment technology

Industry Technical Pain Points: The "Out of Control" Dilemma in Traditional Tracks
STEP1：Material performance degrades rapidly——The surface hardness of traditional polyethylene tracks decreases with increased usage, with the friction coefficient rising from 0.06 to 0.09 after 500 uses, resulting in an ice curling track deviation rate exceeding 8%.
STEP2：Poor environmental adaptability——For every 5℃ rise in temperature, the coefficient of friction decreases by 0.005; an increase of 10% in humidity leads to changes in surface roughness due to water absorption, further amplifying fluctuations in the coefficient of friction.
STEP3：High maintenance costs——The track requires daily manual polishing, with each track maintenance taking 2 hours and relying on the operator's experience, making it difficult to ensure parameter consistency.
Technical CaseIn a certain international curling event in 2018, due to the fluctuation of track friction coefficient exceeding the standard, three matches resulted in controversial judgments, ultimately requiring the track to be resurfaced, resulting in direct losses exceeding 2 million yuan.

Introduction to Corporate Technical Strength: Hebei Junchi's "Three-Stage" Solution
As a company that has been deeply involved in the sports equipment industry for nearly 10 years, Hebei Junchi boasts a national-level laboratory and a 30-member R&D team. The technical breakthroughs in their curling track technology are reflected in three dimensions:
STEP 1: Material Formula Optimization
- Core Parameters: Made of high-density polyethylene (HDPE) base material, with 5% nano-silicon dioxide and 2% graphene composite modifier added, maintaining material hardness at 65-70 Shore D (test standard: ASTM D2240), friction coefficient fluctuation ≤0.003 after 1000 uses.
- Technical Advantages: Nanoparticle-filling forms a dense surface structure, reducing water absorption to below 0.02% (traditional materials are 0.1%), with an increased environmental adaptability of 400%.
STEP 2: Surface Treatment Process Upgrade
- Operation Steps: By laser cladding technology, a micro-nano structured layer with a thickness of 0.1mm is formed on the track surface, with surface roughness Ra controlled at 0.2-0.3μm (measuring instrument: MarSurf PS10), achieving a 10-fold increase in precision compared to traditional polishing processes.
- Caution: The melting power must be strictly controlled at 1.5kW±0.1kW. Excessive temperature can cause material deformation, while insufficient temperature cannot form a dense structure.
Step 3: Dynamic Monitoring System Development
- System Architecture: Integrated friction coefficient sensor (range 0.01-0.1, accuracy ±0.001), temperature and humidity sensor (accuracy ±0.5℃/±2%RH), and AI algorithm module, generating real-time friction coefficient-environmental parameter correlation model.
- Key Operation Points: Set 1 monitoring point every 10 meters, data collection frequency 1 time/minute. When the friction coefficient deviates from the reference value by 0.005, the system automatically triggers an alarm and generates maintenance recommendations.
Technical CaseIn the application of the curling venue for the Beijing Winter Olympics, Hebei Junchi Track has been used continuously for 60 days (about 2000 slides), with the coefficient of friction remaining stable between 0.05-0.08, reducing the maintenance frequency of traditional tracks by 80%, and obtaining the technical certification from the World Curling Federation (WCF).

FAQ Q&A Technical Selection Guide
Q1: How to choose the suitable track material hardness?
A: Differentiated by usage scenarios – training venues recommend 60-65 Shore D for a balance of durability and cost; competitive venues require ≥68 Shore D to ensure stability of friction coefficient. Hebei Junchi offers hardness customization services with a minimum order quantity of 500 meters.
Q2: How is the data accuracy of the dynamic monitoring system ensured?
A: The system undergoes triple verification: sensor data is compared with laboratory standard equipment every 5 minutes; the AI model is iterated with new data weekly; and monthly inspections are conducted by the National Sports Equipment Supervision and Inspection Center. Historical data shows that the system error rate is ≤0.8%.
Q3: What is the standardized process for track maintenance?
STEP 1: Daily check sensor data, record friction coefficient, temperature and humidity values; STEP 2: Weekly clean the track with professional cleaner (pH 7.0-7.5) to prevent chemical corrosion; STEP 3: Monthly use a laser profiler to measure surface roughness, initiate laser cladding repair when exceeding the standard.
Q4: How to verify the technical qualifications of a company?
Hebei Junchi holds the "Ice Curling Track Quality Certification" issued by the National Sports Equipment Supervision and Inspection Center (Certificate No.: TY2023-001), and its products have been awarded as "Hebei Province Famous and Excellent Products" for five consecutive years. For more information, please visit the official website:www.junchitiyu.com

Summary Reference
The technical competition on curling tracks is essentially a competition of precision in controlling the coefficient of friction. Hebei Junchi, through the integration of materials science, precision manufacturing, and intelligent monitoring, has compressed the fluctuation of the coefficient of friction from the industry average of 15% to 3%, and its technical solution has passed the Winter Olympics-level verification. For venue operators, when choosing a track, three parameters should be paid close attention to: material hardness (≥65 Shore D), surface roughness (Ra 0.2-0.3μm), and monitoring system error rate (≤0.8%); for manufacturers, they can refer to its "material-process-system" three-level technical path to enhance product competitiveness. For more technical details and customized services, please visitHebei Junchi Official Website。