Rail Milling Tools
China's high-speed rail speed history: 200→ 250→ 300→ 380 km /h; in order to ensure the safe operation of high-speed rail , the rail irregularity is required not to exceed 0.2 mm per meter ; under high-speed, heavy-duty long-term operation, the railway will have fat. Defects such as scratches or peeling of edges and rail top surfaces, side abrasions, fish scales, etc.
Key words:
Classification:
Key words:
Tool matrix-Fixture matrix
Product Description
1. Development background
China's high-speed rail speed history: 200→ 250→ 300→ 380 km /h; in order to ensure the safe operation of high-speed rail , the rail irregularity is required not to exceed 0.2 mm per meter ; under high-speed, heavy-duty long-term operation, the railway will have fat. Defects such as scratches or peeling of edges and rail top surfaces, side abrasions, fish scales, etc.
Rail diseases change the normal wheel-rail relationship , seriously affecting train operation stability, passenger comfort and driving safety.
By the end of 2022 , the national railway operating mileage will reach 155,000 kilometers , including more than 42,000 kilometers of high-speed rail , and 4,100 kilometers of new lines will be put into operation, including 2,082 kilometers of high-speed rail. There is a strong demand for disease removal and maintenance of railway rails.
The necessity of rail milling
> Able to meet railway smoothness requirements ≤0.2mm/m
> the shortcomings of low transmission grinding efficiency and environmental pollution , and is especially suitable for implementation in the closed environment of the subway.
> Rail milling operation has high repair efficiency and no pollution
Subway rail milling car
2. Product introduction
application
Contour accuracy: ±0.2mm
Radial runout: ±0.02mm
Tool diameter : 1100mm
Cutting parameters:
1. Maximum cutting depth: 0.3-0.5mm
2.Linear speed: 120-180m/min
3. Feed rate: 1.8km/H
Advantage
1. High-quality special steel and special surface treatment enable the cutterhead to work stably for a long time.
2. Optimize the design to evenly control the cutting force of each set of blades and increase the service life of the blades.
3. Excellent processing technology and reliable processing equipment, the blade runout is controlled within 0.02mm , and high surface quality does not require secondary processing.
4. Higher processing efficiency, longer processing distance within limited construction skylight.
5. It has little environmental impact and will not cause iron filings and dust to contaminate long tunnel processing without stopping the machine.
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Nanjing Arrow-Stone Industry Co. ,Ltd
Telephone: 86 025 84958290
Address: No. 105, Building 8, District 8, Lingxin Market, Jiangning District, Nanjing