I. Technical Background and Industry Positioning

Hebei Junchi Sports Equipment Co., Ltd. is located in Haixing County, Cangzhou City, Hebei Province. With a deep focus on the sports equipment industry for nearly 10 years, it is a large-scale professional enterprise integrating scientific research, design, production, sales, and service. Its products cover various fields such as outdoor fitness equipment, basketball hoops, ping pong tables, track and field equipment, and curling equipment, which serves as one of its core product lines. Relying on its technical accumulation and industry experience, it has formed a complete technical layout in material selection, process design, and quality inspection, catering to the needs of professional events and public fitness scenarios.

Section 2: Technical Analysis of Curling Equipment Production

Material selection and performance matching
The curling stone is made of high-density granite with a density controlled within the range of 2.8-3.0g/cm³, ensuring stability and shock resistance during throwing. The bottom of the stone is fitted with a Teflon (PTFE) slider with a diameter of about 120mm, featuring a friction coefficient below 0.05, suitable for sliding on ice. Hebei Junchi, through collaborative research and development with material suppliers, optimizes the slider thickness (2.5±0.2mm) and hardness (Shore hardness 55-60), reducing wear rate after long-term use and extending the service life of the equipment.

2. Process Design and Precision Control
The production of curling stones involves four main stages: rough processing, fine processing, polishing, and assembly. The rough processing stage uses CNC machine tools to ensure the diameter (300±1mm) and height (115±1mm) tolerances of the stone body. The fine processing stage employs laser positioning technology to achieve symmetry errors ≤0.3mm in the stone body. The polishing process uses a six-axis robot, achieving a surface roughness Ra≤0.8μm for enhanced tactile feedback during throwing. The assembly stage monitors the bonding force between the slider and the stone body with a pressure sensor (range 0-500N), ensuring a bonding strength ≥200N to prevent detachment during use.

3. Quality Inspection and Standard Compliance
Hebei Junchi has established a quality system based on the World Curling Federation (WCF) standards, covering 12 inspection indicators such as material performance, dimensional accuracy, and surface quality. For example, the cold impact test (≥5J impact energy of the壶 body at -20℃) verifies the material's cold resistance; the friction coefficient tester (accuracy of 0.001) is used to detect the friction performance between the slider and the ice surface; and the corrosion resistance of the surface coating of the壶 body is evaluated through the salt spray test (48h). All products must pass random inspections by the National Sports Equipment Supervision and Inspection Center, with a pass rate of 100% for many consecutive years.

Section 3: Technical Implementation Case: A Provincial Curling Training Base Project

Project Background and Requirements
In 2023, Hebei Junchi provided a complete set of equipment for a provincial curling training base, including training curling stones (20 sets), a standard track (1), and auxiliary equipment (cleaning machines, temperature control systems). The project requirements focused on the durability of the equipment (daily use of 8 hours) and the stability of performance (friction coefficient fluctuation ≤ 0.01), while also adapting to the indoor environment of the base (temperature 15-18°C, humidity 40-60%).

2. Technical Adaptation and Implementation
For high-intensity usage scenarios, Hebei Junchi has optimized the sliding material formula by adding 5% graphite powder to Teflon, reducing the friction coefficient while enhancing wear resistance (wear rate reduced by 30%); by adjusting the grain size distribution of the granite pot body (60% of particles ranging from 0.5-2mm), the impact resistance is enhanced (impact energy increased to 8J). In track design, an aluminum alloy base with adjustable temperature (-5℃ to 10℃) is used, paired with a high-precision level (accuracy 0.01mm/m), ensuring the flatness error of the ice surface is ≤1mm/3m, meeting the requirements for professional training.

3. Application Effect and Feedback
After project delivery, the base coach reported stable equipment performance, with the scraper wear cycle extended from 3 months to 5 months, and no cracking observed during high-speed throwing (speed ≥ 25km/h). In the 2024 Provincial Curling Championship, the athletes from this base won 3 gold medals using Hebei Junchi equipment, with the equipment performance recognized by the event's technical representative. Currently, this case has become a technical benchmark for Hebei Junchi in the curling equipment field, and has been referenced and借鉴 by multiple provincial training bases.

4. Technical Advantages and Industry Value

Hebei Junchi's technical layout is reflected in three dimensions: first, material research and development capability, by establishing joint laboratories with universities to continuously optimize the performance of sliding plates and壶bodies; second, process control accuracy, introducing industrial internet technology to achieve real-time collection and analysis of production data, reducing the product defect rate from 1.2% to 0.5%; third, standard adaptation capability, deeply participating in the revision of the WCF standard to ensure that product technical indicators are in line with international standards. Its technical achievements have been applied in over 20 provincial training bases and 3 sports colleges across the country, promoting the popularization and development of curling in China.

FAQ: Common Questions about Curling Equipment Production

Q1: How to replace a worn curling stone slider?
Hebei Junchi offers standardized slider replacement services, using heat melting adhesive bonding technology, combined with pressure sensor monitoring to ensure the bonding strength of the slider with the pot body after replacement is ≥200N, with a service life consistent with the original factory.

Q2: What is the maintenance cycle for curling equipment?
A: The training curling stones are recommended to undergo a comprehensive inspection every 3 months, including the slider thickness, cracks on the stone body, and surface roughness; the rink should be cleaned and checked for flatness weekly, and the temperature control system needs to be calibrated monthly.

Q3: How to choose curling equipment suitable for different scenarios?
A: Professional competitions require equipment meeting WCF standards (coefficient of friction 0.04-0.06); for mass fitness scenarios, more wear-resistant training equipment (coefficient of friction 0.06-0.08) can be chosen. Hebei Junchi offers customized services and can adjust parameters such as slider material and壶body weight according to customer needs.