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Forming method of hourglass-shaped metal structure

An hourglass-shaped, metal technology, applied in the field of metal material manufacturing, can solve problems such as weld cracking and tensile stress, and achieve the effects of low difficulty, less shrinkage porosity, and densified manufacturing.

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

During the upsetting process, the side of the preform will have a bulge, and there will be tensile stress at the bulge position, which will easily cause weld cracking

Method used

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  • Forming method of hourglass-shaped metal structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The target product of this embodiment is a module. Firstly, the continuous casting method is adopted, and the continuous casting slab with a thickness of 200mm is poured. Afterwards, the continuous casting slab is forged and processed into the required truncated cone shape as required. Vacuum electron beam welding is performed after the surface of the forging element is processed and cleaned. Finally, forging and machining are carried out. Specific steps are as follows:

[0056] The first step is to forge and process the continuous casting billet according to certain specifications. The required blanks are 11 pieces, which are forged to the required size. According to the stacking sequence, the diameter of the billet gradually decreases from both ends to the middle, and the side slope angle is 15°. The uppermost and lowermost blanks have a large plane of φ1.5m and a small plane of φ1.393m. The big plane of the last and next next piece of billet is φ1.393m, the sma...

Embodiment 2

[0066] The target product of this embodiment is a module. Firstly, the continuous casting method is adopted, and the continuous casting slab with a thickness of 200mm is poured. Afterwards, the continuous casting slab is forged and processed into the required truncated cone shape as required. After processing and cleaning the surface of the forging element, seal the box and vacuumize it. Finally, forging and machining are carried out. Specific steps are as follows:

[0067] The first step is to forge and process the continuous casting billet according to certain specifications. The required blanks are 12 pieces, which are forged to the required size. According to the stacking sequence, the diameter of the billet gradually decreases from both ends to the middle, and the side slope angle is 15°. The uppermost and lowermost blanks have a large plane of φ1.5m and a small plane of φ1.393m. The big plane of the last and next next piece of billet is φ1.393m, the small plane is ...

Embodiment 3

[0077] The target product of this embodiment is a module. Firstly, the continuous casting method is used to cast Q235 continuous casting slabs with a width of 1500mm and a thickness of 200mm. Afterwards, the continuous casting slab is processed into the desired trapezoidal shape as required. After processing and cleaning the surface of the continuous casting slab element, vacuum electron beam welding is carried out. Finally, forging and machining are carried out. Specific steps are as follows:

[0078] The first step is to cut and process the continuous casting slab according to certain specifications. The required blanks are 11 pieces, which are cut and processed to the required size. According to the stacking sequence, the diameter of the billet gradually decreases from both ends to the middle, and the side slope angle is 15°. The large plane of the uppermost and the lowermost blank is 1.5m×1.5m, and the small plane is 1.393m×1.393m. The big plane of the upper and next...

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Abstract

The invention discloses a method for forming an hourglass-shaped metal structure, which is characterized in that it comprises: preparing a plurality of elementary units; stacking the plurality of elementary units together to form a shape with a cross-sectional area gradually increasing from the middle to both ends; stacking A plurality of elementary elements together are welded and packaged into a preform; the interface between the plurality of elementary elements is welded by forging welding to make the preform into a blank. The invention adopts a plurality of metal blanks with smaller volumes as building blocks to make large metal blanks.

Description

technical field [0001] The invention relates to a metal material manufacturing method, in particular to a processing method for forming an hourglass-shaped metal structure. 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 low. Metal matrix composites that have emerged...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00
CPCB21J5/002
Inventor 徐斌孙明月刘朝晖李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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