en.Wedoany.com Reported - Wirtgen conducted a comparative test between the new W205P ULTRA milling machine and its predecessor, the W 205, on the G103 National Highway maintenance project in Beijing, China. The test was carried out continuously under high-intensity, real-world construction conditions. The construction section spanned from Lianggezhuang outside the Sixth Ring Road to the Tonghuai Road section of the G103 National Highway, requiring a total milling length of 14 km. The one-way three-lane road is 11.5 m wide, covering various working conditions including 4 cm asphalt surface layer milling, 8-12 cm conventional depth milling, and 16 cm full-depth asphalt layer milling.
Before the test, both machines underwent standardized maintenance and had a full set of A2 new cutting tools replaced simultaneously. The W 205 milling machine was in a well-run-in, good working condition. Wirtgen launched the ULTRA, an upgraded model of the P-series large milling machines, aiming to address the squeeze on user profit margins caused by current high fuel prices and rising cutting tool costs. Through innovative software and hardware technology upgrades, it seeks to reduce fuel consumption and cutting tool wear.
Measured data shows that at a conventional milling depth of 8 cm, the W205P ULTRA model's milling efficiency is 35% higher than that of the W 205; under full-depth asphalt layer milling conditions, the efficiency improvement can reach 50%. According to the refueling amounts recorded by the operators over three days, the total fuel consumption for both machines was approximately 560 L. After comprehensive calculation, the ULTRA achieves a fuel saving of up to 30% per unit. In terms of cutting tool wear, testers fixed multiple cutting tools at different positions on the milling drum and measured the wear length daily. The unit consumption was accurately calculated based on the milled volume. The results show that the W205P ULTRA's cutting tool wear per unit volume is reduced by up to 50% compared to the W 205.
This consumption reduction effect stems from the synergistic upgrade of software and hardware. The Mill Assist intelligent milling system equipped on the ULTRA translates operational experience into algorithms, precisely controlling engine speed, milling drum working speed, travel pressure, and water spray volume at the millisecond level. The matching cost-effective and efficient milling drum reduces cutting resistance from the hardware structure level, extending tool life. Calculated based on single-shift costs, using a construction model with a daily output of 400 m³, the W205P ULTRA can save over 3,000 yuan in direct operating costs per shift; at a conventional output of 600 m³, the savings can exceed 5,000 yuan.
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