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Forming method of flange ring for automobile tail gas recycling device

A vehicle exhaust, consistent technology, applied in the field of material processing, can solve the problems of low material utilization, low mechanical properties, easy to rust, etc., and achieve the effect of ensuring forming accuracy and surface quality, high material utilization, and good application prospects.

Active Publication Date: 2014-12-17
NANTONG FULEDA AUTOMOBILE FITTINGS
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Inherent defects in the casting process, such as air holes, shrinkage porosity, cracks, etc. are not easy to control, and are easy to rust during use, and the mechanical properties of castings are lower than those of plastic forming parts, which affects the service life of parts
At the same time, follow-up machining procedures are still required after casting, resulting in low material utilization and low production efficiency

Method used

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  • Forming method of flange ring for automobile tail gas recycling device
  • Forming method of flange ring for automobile tail gas recycling device
  • Forming method of flange ring for automobile tail gas recycling device

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Embodiment Construction

[0028] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples.

[0029] see Figure 1 ~ Figure 3 , a method for forming a flange ring for an automobile exhaust gas recycling device, which uses a combination of reduced-diameter spinning and shrinking-mouth spinning to directly form a tube blank into a flange ring for an automobile exhaust gas recycling device. The forming method includes the following steps:

[0030] Reduced-diameter spinning step: Considering the symmetry of spinning and improving production efficiency, two parts are formed by one-time reduced-diameter spinning. The shrinking spinning process is divided into two steps, figure 2 Shown is a schematic diagram of the two-pass spinning reduction process. The outer diameter of the initial tube blank is 114mm, the wall thickness is 5mm, ...

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Abstract

The invention provides a forming method of a flange ring for an automobile tail gas recycling device. By combining necking in spindown with reducing spinning, a tube billet can be directly formed to obtain the flange ring for the automobile tail gas recycling device, so the surface quality and integral mechanical property of the flange ring are improved; meanwhile, the productivity and the utilization rate of materials are improved.

Description

technical field [0001] The invention relates to a flange ring forming method for an automobile tail gas recycling device, which belongs to the field of material processing. Background technique [0002] Since the beginning of the 21st century, the rapid development of the automobile industry has brought convenience to people's lives, but it has also caused huge energy consumption. Studies have shown that only about one-third of the energy released by automobile fuel combustion is effectively used, and the rest of the energy is lost or emitted into the atmosphere, resulting in a huge waste of energy and adverse effects on the environment. Therefore, the recycling of automobile waste heat is conducive to the realization of energy saving and emission reduction of automobiles. [0003] The flange ring in the present invention is a part in the automobile exhaust gas recycling device, and the traditional production process of the flange ring is machining and forming after lost wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21D22/14B21D37/10
CPCB21D22/14B21D37/10B23P15/00F01N5/02
Inventor 严军薛克敏金小波刘雨生
Owner NANTONG FULEDA AUTOMOBILE FITTINGS
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