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Metal hierarchical construction forming method

A technology of metal and deformation direction, which is applied in the processing field of metal or metal-based material forming, which can solve the problems of large forgings, interface breaking vacuum, scrapping, etc., and achieve low-cost manufacturing, fast solidification speed, and reduce manufacturing costs.

Active Publication Date: 2020-05-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 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, a 10t-level blank element is obtained. After surface processing, cleaning, stacking, packaging, and forging and welding of four 10t-level blank primitives, two 20t-level blanks were obtained. Two pieces of 20t-level blanks were used as blank basic elements for surface processing, cleaning, stacking, packaging, forging and welding to obtain one piece of 40t-level blanks. Finally the blank is forged into a ring. Specific steps are as follows:

[0059] In the first step, blank primitives are fabricated using conventional construction methods. Cut o...

Embodiment 2

[0070] 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, a 40t-level blank element is obtained. After surface processing, cleaning, stacking, packaging, and forging and welding of 4 pieces of 40t-level blank primitives, two pieces of 80t-level blanks were obtained. Two pieces of 80t-level blanks were used as the basic elements of blanks for surface processing, cleaning, stacking, packaging, forging and welding, and one piece of 160t-level blanks was obtained. Finally the blank is forged into a rotor. Specific steps are as follows:

[0071] In the first step, blank primitives are fabricated using conventional construction m...

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Abstract

The invention discloses a step-by-step metal forming method: firstly, a conventional construction method is used to carry out one-level construction to obtain a blank element for the next-level construction. After that, N-level construction is carried out, and the two blank primitives are stacked into a predetermined shape; the two blank primitives stacked into a predetermined shape are packaged into a preform; the interface between the two blank primitives is welded by forging welding The preform is made into a blank; the blank is forged to the required shape, which is used as the basic element of the N+1-level construction; the above steps are repeated to achieve multi-level construction and prepare a larger blank. When performing the N-level construction steps, if the interface between the two blank basic elements is welded by forging welding to make the preform into a blank, the interface between the two blank basic elements cannot be completely Welding, the ability to forge the two blank primitives back to the dimensions of the blank primitives at the end of the N‑1 build for another rebuild. Only one interface exists in the preform during each N-stage build.

Description

technical field [0001] The invention relates to a metal material manufacturing method, in particular to a processing method for realizing the forming of metal or metal-based materials through hierarchical construction. 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 and the price is l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21J5/08B21J1/04
CPCB21J1/04B21J5/002B21J5/08
Inventor 徐斌孙明月陈响军李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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