As an ideal cost savings、A maintenance process that extends the life of the pavement and quickly restores traffic.，Finish milling process can be used to improve the skid resistance of pavement、Improve the smoothness and cross slope of the road surface、Application scenarios such as removal of traffic markings and surface rutting treatment。 In the process of building a new expressway，The cement concrete pavement of bridges and tunnels is leveled and roughened by fine milling and planing process.，Can efficiently replace a shot blas process.，Further improve the overall pavement smoothness，At the same time, it ensures that the asphalt concrete material paved subsequently can be better bonded with the original bridge and tunnel pavement.。

Recently，At the project site of Guangxi Laidu Expressway, Wittgen's four-two-meter milling machine was used. W 195i The ultra-fine milling drum with 672 cutter heads is assembled to carry out fine milling operation，Construction quality includes the flatness of the surface layer after milling.，Fineness of milling grain，As well as the milling output has been unanimously recognized by the pavement branch of Guangxi Road and Bridge Engineering Group Co., Ltd.，This also fully verifies the overall performance of Wittgen's four large milling machines.，And the comprehensive advantages of core cutting technology

Project summary

Laidu Expressway，Total length of main line 134.037 kilometers，Guangxi Zhuang Autonomous Region“Five nets”The key project of the construction campaign。The total length of this fine milling application project is 22 km，Four lanes in both directions，Surrounded by towering peaks、The depressions are scattered all over the place，The proportion of bridges and tunnels is as high as 89.7%。

Facing such a difficult highway construction，There is a very important link.：Removing cement laitance from the original bridge deck and tunnel ground、Leveling and galling treatment，O as to ensure that the asphalt concrete material paved subsequently can be better bonded with the original bridge and tunnel pavement.，At the same time, further improving the flatness of the concrete surface can also lay a good foundation for the subsequent paving of the asphalt surface.，Ffectively save that usage amount of asphalt material。Project requires a finish milling depth of 5 mm，It is equivalent to the pavement.“Micro-plastic surgery”，And that mil area is large，The construction period is tight。

Power，Steady as a rock

The high-speed finish milling construction is carried out by Wittgen W 195i Be the main force of the project，Take 2 shifts per day，24-hour construction mode，Once again, the proven reliability of the Wirtgen planer。It is famous for its economy in the four-two-meter milling machine series of Wittgen. W 195i Model，The maximum power of the engine is 410 kW。

The power is completely enough to load 672 cutter heads. LA 6*2 Super finish milling drum，In addition, Wirtgen intelligent control system WIDRIVE ，Let W 195i At a response intensity of 45-50 MPa Cement concrete material，The construction performance is always stable and efficient.。

W 195i The engine intelligent load control system can sense the change of working load in real time.，The engine power output can be controlled without manual intervention；ISC The intelligent travel system can greatly optimize the traction drive control，Compared with traditional hydraulic differential lock，ASC The automatic anti-skid system can intelligently adjust the motor oil quantity.，O as to better adapt to different road surfaces.，Reduce slippage of track shoes，Walking is more stable。

So，At the construction site W 195i The milling speed is maintained at 10-12 m/min，It gives a good balance between milling texture and working efficiency.。

Milling，Precise and in place

Ensure high flatness of road surface，Precise milling operations are essential。Wittgen W 195i The cutting speed can be automatically controlled.，Ensure the stable operation of the machine；LEVEL PRO PLUS The millimeter-level automatic leveling system is integrated with the whole machine control system.，In addition, the intelligent outrigger height control can efficiently respond to the signal of the leveling system.，Flexible adaptation to the ups and downs of the road surface，This allows the milling machine to average 10.-12 m/min The milling speed can also achieve high-precision automatic leveling.。

   Uniform and dense pavement texture after finish milling
 

Cost，Economical and efficient

W 195i The engine intelligent management system realizes the automatic throttle control of milling operation.，In addition, the optional function of three-gear milling drum speed enables the equipment to match the working condition ideally.，Higher actual fuel efficiency。At the same time，In this project，Customers also feedback that the overall performance of the Wirtgen milling machine is ideally matched with the Wirtgen tool，Wirtgen for finish milling Generation A² The service life and effective milling area of the cement cutter head are well recognized.，The wear cost of the cutter head has good economy.。

   Wirtgen equipped with equipment finish milling drum W1-13-G/20A² Cutter headWei has something to say

Fine milling and planing should be real.“Fine”，Achieve high road flatness，The excellent performance and reliable and stable quality of the milling equipment itself, as well as the core cutting technology that has been verified by practice.，Ideal matching is indispensable。Wittgen---More than 60 years of milling technology，Speak by strength，Achieve the leading position of technology，Expert choice for professional customers in the field of milling！

Due to space constraints，The advantages of Wirtgen cutting technology are embodied in this case.，I will not repeat it in this article.。Please continue to pay attention to Wittgen China subscription number.，Xiaowei will introduce it to you in the following articles.。