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Spinning flange ring and forming technology thereof

A forming process and flange ring technology, applied in the direction of building components, mechanical equipment, engine components, etc., can solve problems such as welding defects, limited use range, low production efficiency, etc., to achieve improved mechanical properties, meet appearance requirements, and surface good quality effect

Active Publication Date: 2016-08-24
ZHEJIANG DONGXING AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The flange ring is a part of the vehicle exhaust energy recycling device. At present, the flange ring used in the vehicle exhaust gas utilization device on the market requires high precision and strict surface quality. Its production mainly adopts forging, casting and rolling, etc. method, the production of flange rings by forging requires cutting and forging the entire steel ingot, and multiple times of heating and forging are required, which wastes materials and energy, and the product quality is low and the pollution is also serious; limited by the size of the flange ring, the production volume The production of flange rings requires expensive rolling equipment of different specifications, and the equipment investment is still very large. In addition, the distortion is serious after rolling, and the leveling is difficult. It also needs to be cleaned, beveled and welded, which wastes manpower and increases production. cost, and the production efficiency is also low, and it is easy to produce welding defects; the production of flange rings by machining after casting requires sand molds, melting metal, and casting, and it is easy to produce trachoma and pores accompanied by shrinkage porosity, cracks, and slag inclusions and other defects, due to low strength, it is easy to rust during use, and the scope of use is greatly limited, which increases the cost input

Method used

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  • Spinning flange ring and forming technology thereof
  • Spinning flange ring and forming technology thereof
  • Spinning flange ring and forming technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Such as Figure 8 As shown, the steps are the same as above, the difference is that the relationship between the angular velocity of the rotation of the first-stage semi-finished product and the speed of the preforming-rotor process is:

[0076] , 350rpm≥ w ≥250rpm, the unit of v is mm / s;

[0077] The research shows that when the stainless steel blank rotates, the quality of its spinning is related to the cooperation between the rotational angular speed and the mold process speed. When the rotation speed is low, such as 250rpm, the mold process speed should not be too high, because the process speed is too high , the rotation speed is too low, and it is easy to cause excessive pulling force in the radial direction of the blank during spinning, resulting in slight pulling wrinkles on the clamping part and the film-feeding part of the blank. Usually, such wrinkles should not be detected by the naked eye. It was found that, when in use, the wrinkled parts were lower th...

Embodiment 2

[0079] Such as Figure 9 As shown, the described steps are the same as in Example 1, the difference is that the relationship between the angular velocity of the first spinning blank rotation and the speed of the preforming two rotary wheel process is:

[0080] , 350rpm≥ w ≥270rpm, the unit of v is mm / s;

[0081] The principle is similar to that of Example 1, the difference is that after the first spinning process, the edge of the workpiece is trimmed into a hemispherical ring. Since the workpiece does not directly bear the hard force, the force bearing capacity of the blank for the first spinning To be obviously stronger than the first-class semi-finished products, the rotational speed of the blank can be significantly increased. When the rotational speed is the same, the quality of the module is the best when the rotational speed is 300rpm.

Embodiment 3

[0083] Such as Figure 10 Shown, described step is identical with embodiment 3, and its difference is,

[0084] The relationship between the angular velocity of the rotation of the second spinning blank and the speed of the forming wheel process is:

[0085] ,350rpm≥ w ≥300rpm, the unit of v is mm / s;

[0086] With the final forming of the blank, its stress capacity reaches the highest value, that is, the rotational speed and the mold process speed can point to the maximum value during the final forming. When the rotational speed reaches 350rpm, the spinning semi-finished product with the best quality of the present invention can be made. The part has the highest surface smoothness, the strongest force bearing capacity and the best plasticity.

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Abstract

The invention belongs to the technical field of automobile accessories, and particularly relates to a spinning flange ring and a forming technology thereof. The spinning flange ring comprises a flange ring body and a central inner hole. The inner wall of the flange ring body is of a groove structure. The ring body with the outer wall smoothly protruding surrounds the central inner hole. The spinning flange ring is manufactured through the first step of feeding, the second step of punching, the third step of inclination pressing, the fourth step of spinning forming, the fifth step of punching, the sixth step of inner circle turning, and the seventh step of outer circle turning and small hole drilling. The flange ring is manufactured through the spinning technology, the shape of a blank is preprocessed, part of the outer edge of the blank is pressed down, positioning is achieved through the central hole, and no cracks or wrinkles can appear in the spinning process; meanwhile, by means of the spinning technology, the product is good in plastic performance and longer in service life.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to a spinning flange ring and a forming process thereof. Background technique [0002] Since the 1990s, the development of the automobile industry has brought convenience to human life, but it has also caused huge energy consumption and environmental pollution. Studies have shown that only about 30% of the energy released by the combustion of automobile fuel in the engine is effectively used, and the rest of the energy is dispersed or discharged into the atmosphere in the form of heat or gas kinetic energy, resulting in a great waste of energy and damage to the environment. Negative Effects. With the full implementation of the Made in China 2025 strategy, the environmental protection automobile industry has received high attention and rapid development. Therefore, the recycling of automobile waste heat is conducive to the realization of energy saving and emission re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16S5/00F02G5/02B21D22/14B23P15/00
CPCB21D22/14B23P15/00F02G5/02F16S5/00Y02T10/12
Inventor 金崇利刘成贵潘兆星
Owner ZHEJIANG DONGXING AUTO PARTS
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