Sand-glass-shaped metal graded construction forming method

Abstract

The invention discloses a sand-glass-shaped metal graded construction forming method. The sand-glass-shaped metal graded construction forming method is characterized in that firstly, a conventional construction method is used for carrying out first-stage construction, a workblank is obtained, and is subject to further forging to form a round table shape or square table shape to serve as a workblank element of the next-stage construction; N-stage construction is carried out, and two workblank elements are stacked together to form a sand glass shape on the whole body; the two workblank elementsstacked to be in the sand glass shape are packaged to a sand-glass-shaped prefabricated blank; through forging welding, the interface between the two workblank elements is welded to make the sand-glass-shaped prefabricated blank being the workblank; the workblank is further forged to form the round table or square table shape to serve as an N+1 stage constructed workblank element; the above stepsare repeated so as to achieve multi-stage construction, and the larger workblank is made. Due to the fact that the middle of the sand glass shape is small, the upper end and the lower end are large insize, in the deformation process, the middle segment with the small size preferably deforms, and therefore under the small pressure, large deformation of the middle interface is achieved.

Description

technical field [0001] The invention relates to a metal material manufacturing method, in particular to a processing method for realizing metal or metal-based material forming through an hourglass-shaped hierarchical construction method. This method is not only suitable for homogeneous manufacturing of homogeneous materials, but also suitable for composite manufacturing of heterogeneous materials. Background technique [0002] Metal materials are the most indispensable materials in the development of human history. Based on their unique characteristics of cheapness, strength, toughness, and durability, metals have always occupied a dominant position in the contemporary material industry. After thousands of years of accumulation, human beings have mastered a set of quite mature metal material production technologies. For example, traditional steel production has gone through smelting, casting, pressure processing and heat treatment processes, and the product quality is stable...

AI Technical Summary

Problems solved by technology

However, during the fabrication of building blocks, there is a high probability of scrapping due to the breakage of vacuum at the interface between primitives due to accidental factors such as interface contamination or weld failure

For ultra-large forgings over 100t, the failure of a single interface leads to huge losses in the scrapping of the entire forging, and it is urgent to avoid risks through effective methods

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