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The surface quality of steel castings after welding repair shall meet the following requirements: ① For non machined surfaces, the

For welding repair of important steel castings, post weld heat treatment is generally required to eliminate thermal stress after welding

The welding repair of steel castings should be carried out before the heat treatment of the steel castings. All welding

Preheating is a key process to ensure the welding repair performance and quality of steel castings. The preheating temperature required

Before welding repair of steel castings, necessary pre welding preparations should be carried out. Firstly, it is necessary to determine

The chemical composition and mechanical properties of steel castings must comply with the relevant provisions of GB/T 40805-2021 “General Technical

The basic requirements for welding repair of rail vehicle steel castings include: general requirements, enterprise requirements, personnel requirements, environmental requirements,

With the rapid development of high-speed trains in China, the current market holds more than 4000 trains. During the new

As shown in the figure, the steel casting after riser removal and the casting before delivery are shown. This steel

Due to the small structure of the steel casting and the relatively uniform wall thickness of the steel casting, the

CAE (Computer Aided Engineering Analysis) simulation can increase design functionality, reduce design costs, and shorten design cycles; Adopt optimization design

For steel castings, in order to ensure that the riser can effectively feed the steel castings, it is necessary to

Considering the structural characteristics of the product such as difficulty in molding ribs and small weight of steel castings, as

Name Texture of material Weight/kg Length/mm Width/mm Height/mm Maximum wall thickness/mm Minimum wall thickness/mm Gland ZG230- 450 15.5 270 270

Quality control is crucial in steel casting to ensure the production of high-performance components. Here are some key aspects of