Rolling-expansion forming method of H-shaped cross-section ring

Abstract

The invention relates to a rolling forming method of ring pieces and forge pieces, in particular to a rolling forming method of an H-shaped section ring piece. The rolling forming method includes the following steps that the rolling ratio is determined, the ring piece blank dimension is determined, ring piece rolling is carried out, an upper conical roller and a lower conical roller abut against the upper end face and the lower end face of a ring piece blank correspondingly, the upper conical roller and the lower conical roller rotate around the axes of the upper conical roller and the lower conical roller, the upper end face and the lower end face of the ring piece blank are rolled, the upper conical roller and the lower conical roller are provided with annular bosses, and the annular bosses are matched with grooves of the H-shaped section ring piece; and a center roller abuts against the inner wall of the ring piece blank, the ring piece blank is rolled, and a support roller abuts against the outer wall of the ring piece blank. According to the rolling forming method, the principle that the size is unchanged in the rolling process is adopted for conducting rolling forming on an H-shaped section, machining for removing materials in the later period is omitted, and therefore the material using rate is high, and the cost of finished products is low; and as rolling forming is adopted, fiber textures formed in the material forming process are beneficial for the improvement of the material mechanics property and the combination property, and the product quality is high.

Description

technical field [0001] The invention relates to a rolling forming method of a ring forging, in particular to a rolling forming method of an H-shaped cross-section ring. Background technique [0002] In recent years, with the continuous advancement of science and technology, the ring rolling technology has achieved remarkable development. The ring rolling has developed from the traditional rectangular cross-section ring to the special-shaped ring with changing cross-section. Special-shaped rings with varying axial cross-sections, such as H-shaped cross-section rings, are widely used in aerospace and machinery industries. Rings with H-shaped cross-sections have annular grooves on their upper and lower surfaces. The existing method is to obtain them by rolling The rings with rectangular cross-sections are all H-shaped cross-sections through subsequent machining. The existing methods for obtaining rings with H-shaped cross-sections mainly have the following defects. On the one ...

AI Technical Summary

Problems solved by technology

Obtaining H-shaped cross-section rings through existing methods mainly has the following defects. On the one hand, the material utilization rate is low and the cost is high.

Since the rectangular ring formed by rolling needs to remove material through subsequent mechanical processing, a large amount of material is processed, and the material utilization rate of the product is very low. Such as precious metals, the waste of materials increases the cost of the product

On the other hand, the performance of the product is reduced

The fibrous structure formed in the rolling process of the rectangular ring is conducive to the improvement of the mechanical properties and comprehensive properties of the material, but through the subsequent mechanical processing, the fiber structure formed in the rolling stage is destroyed, and the mechanical properties and comprehensive properties of the ring are destroyed. reduced performance

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