Sand-glass-shaped metal graded construction forming method

An hourglass-shaped, metal technology, applied in the field of metal material manufacturing, can solve the problems of large forgings, interface breaking vacuum, scrapping, etc., to achieve the effects of low-cost manufacturing, fast solidification speed, and reduced manufacturing costs

Active Publication Date: 2018-01-26
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 cont...

Method used

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  • Sand-glass-shaped metal graded construction forming method
  • Sand-glass-shaped metal graded construction forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The target product of this embodiment is a 316 stainless steel ring. Firstly, the continuous casting method is adopted, and the continuous casting slab with a width of 1000mm and a thickness of 300mm is poured, and its steel type is 316H. Then cut out the continuous casting slab element with a length of 1000mm, process and clean it, seal and weld it into a preform in a vacuum chamber. After the preform is forged and welded and further forged, a 10t-level blank element is obtained. After surface processing, cleaning, stacking, encapsulation, forging and welding, and further forging, 4 pieces of 10t-level rough base units were used to obtain 2 pieces of 20t-level rough base units. After surface processing, cleaning, stacking, packaging, and forging welding of two 20t-level blank elements, a 40t-level blank was obtained. Finally the blank is forged into a ring. Specific steps are as follows:

[0057] In the first step, blank primitives are fabricated using conventional...

Embodiment 2

[0067] The target product of this embodiment is the rotor forging. Firstly, the continuous casting method is used to cast a continuous casting slab with a width of 1600mm and a thickness of 300mm, and its steel type is 16Mn. Then cut out the continuous casting slab element with a length of 1600mm, process and clean it, seal and weld it into a preform in a vacuum chamber. After the preform is forged and welded and further forged, a 40t-level blank element is obtained. After surface processing, cleaning, stacking, encapsulation, forging and welding and further forging, 4 pieces of 40t-level rough base units were used to obtain 2 pieces of 80t-level rough base units. After surface processing, cleaning, stacking, packaging, and forging welding, two 80t-level blank elements were used to obtain one 160t-level blank. Finally the blank is forged into a rotor. Specific steps are as follows:

[0068] In the first step, blank primitives are fabricated using conventional construction ...

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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...

Claims

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Application Information

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IPC IPC(8): B21J5/00
Inventor 徐斌孙明月陈响军刘朝晖李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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