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Aluminum alloy can replace most of the parts, and steel for automobile has a large proportion. Most of the steel

The so-called hot forming, fully known as hot stamping forming, is a new technology specially used for automotive high-strength steel

At present, with the development trend of automobile lightweight, high strength steel and aluminum alloy become two kinds of materials

Thin wall In order to meet the needs of the era of low emission and lightweight, promote global sustainable development,

With the development of globalization, more and more attention has been paid to improving the engine emission temperature and realizing

In the past, when casting exhaust pipe, the main forming mode was wet sand gravity casting, and the materials were

In the future automobile production, it is inevitable to realize low emission and lightweight. Therefore, we should try our best

In order to better verify the performance of the designed exhaust manifold, the exhaust manifold performance test is carried out,

First of all, in order to further compare the influence of the newly designed stamping and welding exhaust manifold and

In the overall optimization scheme, in order to improve the exhaust efficiency of the exhaust manifold, ensure that the exhaust

In the design process, comprehensive consideration is needed. First of all, on the basis of the original exhaust manifold, the

For example, the original exhaust manifold of automobile engine is cast exhaust manifold, and its structure is shown in Fig.