PRODUCTS

Our company's main products are: stainless steel car body, aluminum alloy car body, rail freight car, rail passenger car, interior general assembly design, and production of interior parts. 

The car body is the main bearing structure of the rail vehicle, which is supported on the bogie to ensure the safety of passengers. Electrical equipment shall be installed under the car body underframe and above the car roof to form the main body of the vehicle. It needs to bear various dynamic and static loads, various vibrations, and adapt to safe design speed operation; It shall also meet the requirements for sound insulation, heat insulation, shock absorption, fire prevention, etc., to ensure the safety of passengers as much as possible in the event of an accident.

The strength and stiffness of vehicle body are related to the safety, reliability and comfort of vehicle operation; The anti-corrosion and corrosion resistance, surface protection and decoration methods of the vehicle body are related to the appearance, service life and maintenance system of the vehicle; The weight of vehicle body is related to energy consumption, acceleration and deceleration, passenger carrying capacity and even train formation form (drag ratio). All these will directly affect the operation quality and economic benefits.

Characteristics Of Stainless Steel Car Body

Stainless steel car body: the two main advantages of stainless steel make it suitable for bus body materials: 

It has excellent corrosion and rust resistance, which saves the painting process of the car body outer plate, and can greatly save maintenance costs. 

Compared with ordinary steel, corrosion and anti-corrosion coating is not required, so the thickness of the plate can be reduced, which is conducive to the lightweight of the car body, so as to save energy and reduce exhaust emissions. 

At present, there are two commonly used car body stainless steels: SUS304 and SUS301L of austenitic stainless steel.

The stainless steel car body, like the carbon steel car body, is an integral load-bearing plate beam structure. The main reason why stainless steel car body can realize lightweight is that it has high strength. In this way, the thickness of plates can be greatly reduced. For example, the thickness of side wall and roof outer plate is generally 1.0mm or 1.5mm, while that of carbon steel car body is generally not less than 2.0mm; The corrugated plate of lightweight stainless steel car body is SUS301L-MT, and the thickness is generally 0.6 mm, while the thickness of weathering steel corrugated plate is 1.6 mm.

The stainless steel car body has good corrosion resistance, so there is no need to thicken the plates for corrosion resistance during design, and the external surface of the car body can maintain the natural color and luster of the stainless steel material. Generally, there is no need to paint and repair the surface, which can further reduce the car body quality. Generally, the material of side wall outer plate should be subject to matting and passivation treatment. In addition, considering the beauty of the vehicle, the outer surface of the vehicle body should be pasted with ribbon as decoration to increase the dynamic feeling of the vehicle.

However, because the longitudinal elastic modulus of stainless steel material used for stainless steel car body is only 0.85 of that of carbon steel, the stiffness of stainless steel car body at the same section is lower than that of carbon steel car body. In addition, the thickness of plate and framework of stainless steel car body is thinner than that of carbon steel car body, so the structure of stainless steel car body at high stress areas such as door corner and window corner is not as easy to handle as that of carbon steel, which should be noted in the application of stainless steel car body.