Balasen Metal Casting Application in Railway Casting

Balasen can undertake various components for the rail transit industry, including but not limited to vehicle walking parts (such as wheels, side frames, rocking pillows, bearing seats, etc.), braking systems (such as brake discs, casings, valves, etc.), and track components (such as sleepers, track plates, etc.).

The materials include:

Grey cast iron: HT150, HT200, HT250, HT300;

Ductile iron: QT350, QT400, QT450, QT500, QT550, QT600, QT700, QT800, QT900

Cast steel, aluminum alloy, etc.

The Requirements for Castings in the Railway Industry

High Strength and Toughness:

Castings need to bear various loads during the operation of the vehicle. For example, the castings of the car body need to support the weight of the vehicle body and the load of passengers, and the castings of the bogie need to withstand the impact force generated during the vehicle's driving. Therefore, they need to have high strength and toughness to ensure safety and reliability.

High Dimensional Accuracy:

The components in rail transit fit closely with each other. For example, the dimensional accuracy of the castings in the braking system directly affects the braking effect. So, the castings need to have high dimensional accuracy to ensure precise assembly with other components and the normal operation of the system.

Good Wear Resistance:

Castings such as wheels and brake discs will rub against other components frequently during operation. Only with good wear resistance can the wear be reduced, the service life be extended, and the driving safety be ensured.

Excellent Corrosion Resistance:

The vehicle may face corrosive environments such as humidity, acids, and alkalis. If the castings such as the vehicle body shell and the bogie have poor corrosion resistance, they are likely to be corroded, reducing their performance and service life. Therefore, they should have excellent corrosion resistance.

Key Materials Used in High-Performance Railway Casting Components

High-strength Cast Steel:

It has high yield strength, tensile strength and good toughness, and can withstand the huge loads and impact forces during the operation of the train. It is commonly used in manufacturing key components such as couplers and bogie frames.

Alloy Cast Iron:

By adding alloying elements such as chromium, molybdenum, and nickel, the strength, wear resistance and heat resistance of ordinary cast iron are improved. It can be used to manufacture components such as brake discs and wheels.

Aluminum Alloys:

Such as 6061, 7075 and other aluminum alloys, which have high specific strength and good corrosion resistance, and can effectively reduce the weight of the vehicle. They are often used in manufacturing car body structural components, pantograph components, etc.

Titanium Alloys:

They have excellent specific strength, corrosion resistance and high-temperature resistance, and can be used to manufacture some key components with strict weight requirements and complex working environments, such as certain key connection components of high-speed trains. However, due to the high cost, their application is relatively limited.

Key Materials Used in High-Performance Railway Casting Components

Railway Casting Gallery

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