Production process of arc-shaped aluminum hoop

Abstract

The invention relates to a production process of pipeline connecting equipment, in particular to a production process of an arc-shaped aluminum hoop. Comprising the following steps: (1) manufacturing a die: manufacturing a corresponding forging die according to the geometric dimension and contour of the hoop; (2) preheating is conducted, specifically, the alloy bar made of the wrought aluminum material is heated to reach the forging temperature; (3) pre-forging: forging an arc-shaped forging stock similar to the hoop in shape by adopting a free forging process; (4) secondary heating is conducted, specifically, the pre-forged blank is heated again to reach the forging temperature; (5) forging forming is conducted, specifically, the blank heated to the forging temperature is subjected to final forming forging; and (6) edge cutting treatment is conducted, specifically, under the room temperature state, residual edges on the periphery of the formed hoop forging stock are cut off through an edge cutting die, and a finished product is obtained after cutting treatment is completed. The forming process is simple, the production cost can be reduced, the production speed can be increased, the defects of cast-state looseness and the like generated in the smelting process of cast aluminum are eliminated, and the microstructure is optimized.

Description

technical field [0001] The invention relates to a production process of pipeline connection equipment, in particular to a production process of an arc-shaped aluminum hoop. Background technique [0002] Casting is the process of pouring smelted metal liquid into the mold, cooling and solidifying to obtain the required shape and performance of the parts. Casting is a commonly used manufacturing method with low manufacturing cost and high process flexibility. It can obtain complex shapes and large castings, which occupy a large proportion in mechanical manufacturing; forging is one of the important methods of metal plastic processing. And other methods, make the metal material in the plastic state become a workpiece with a certain shape and size, and change its physical properties. The main purpose of forging is: forming and modification (improvement of mechanical properties and internal structure). The latter is difficult to achieve by other processes, and forging productio...

AI Technical Summary

Problems solved by technology

[0003] The hoops in the prior art are generally two half-rings that are hinged or fixed by bolt structures, which are poured by casting technology, and their mechanical properties are not good, such as coarse structure, many defects, etc., and the quality of castings is unstable. There are many processes, the influencing factors are complex, and many defects are prone to occur, and it is difficult to remove the mold during the casting process. Once the mold is not removed properly, the product will be damaged, the quality of the product will be reduced, and the production cost of the enterprise will be affected.

Forging can eliminate defects such as loose casting of metals during the smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. The existing technology forging semi-circular When there is a problem that it is difficult to demould

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