A method for forging and forming earrings

Abstract

The invention discloses an earring forging forming method. The method is characterized in that raw materials which fit an earring product by size are forged into a primary blank being big in one end and small in the other end; the primary blank is fed into a die and subjected to die forging to obtain a final blank; and the final blank is processed by forging flash cutting, shot blasting and mechanical processing to obtain a final earring product. The method has the advantages of being simple, and practical, reducing the forging forming force, increasing the forging yield, and increasing the material utilization rate.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to an earring forging forming method. Background technique [0002] The existing manufacturing method of earrings mainly includes two steps of billet making and mechanical processing, wherein the method of billet making usually adopts free forging or die forging. The blank formed by free forging usually has a large machining allowance, so the material utilization rate is low, and the subsequent machining takes a long time; and if the blank is formed by die forging, because the cross-section of the earring changes drastically, the mold During the forging process, when the metal flows, the deformation resistance is large, the flow is difficult and the cooling rate is fast, and the cavity is often not filled, resulting in unqualified blanks. In addition, the mold is under heavy load and small load during the forming process, and uneven load will cause Lead to large wear of the mold ca...

AI Technical Summary

Problems solved by technology

The blank formed by free forging usually has a large machining allowance, so the material utilization rate is low, and the subsequent machining takes a long time; and if the blank is formed by die forging, because the cross-section of the earring changes drastically, the mold During the forging process, when the metal flows, the deformation resistance is large, the flow is difficult, and the cooling rate is fast, which often cannot fill the cavity, resulting in unqualified blanks. In addition, the mold is under a large load and a small load during the forming process, and the uneven load will cause Lead to large mold cavity wear

In addition, the cross-section shape of the existing earrings changes drastically in the length direction, so if a simple round or square billet is used before forging, it is prone to the problem of folding at the excessive cross-section.

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