High strength steel wire for arc additive manufacturing, and preparation method thereof

A high-strength steel wire, additive manufacturing technology, applied in the direction of additive processing, can solve the problems of poor formability, reduce mechanical properties, affect forming accuracy and quality, etc., and achieve excellent tensile properties, less inclusions, and stable processes. Effect

Active Publication Date: 2019-08-27
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the arc additive manufacturing of high-strength steel components usually uses commercial welding wire, which often has poor formability, which affects the forming accuracy and quality, and the oxide scale formed under the action of the arc is difficult to remove. In the continuous additive manufacturing process, the inclusions are not Easy to float, easy to cause inclusions, reduce mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The high-strength steel wire alloy ingot is first smelted in a vacuum induction furnace with a vacuum degree of 15Pa. The ingot was kept at 1100°C for 3 hours, and forged to an electrode sample of Φ70, the final forging temperature was 900°C. The alloy is smelted twice by electroslag remelting, the electroslag speed is 1.6kg / min, the voltage is 26V, and the current is 2.3kA. The ingot was kept at 1100°C for 3 hours, and then forged to a square bar with a cross-sectional side length of 45mm×45mm. The final forging temperature was 900°C, and it was air-cooled. The forged square bar was kept at 1100°C for 2 hours, and then rolled into a Φ6.5mm wire rod through multiple passes of hot rolling. Anneal the high-strength steel wire rod: keep it at 1100°C for 2 hours, then water-cool it. After annealing, the high-strength steel wire rod is pickled to remove scale, washed and dried, then treated with film, and then dried at 100°C for wire drawing. The drawing diameter changes i...

Embodiment 2

[0038] The high-strength steel wire alloy ingot is first smelted in a vacuum induction furnace with a vacuum degree of 10Pa. The ingot was kept at 1050°C for 2 hours, and forged to an electrode sample of Φ70, the final forging temperature was 950°C. The alloy is smelted twice by electroslag remelting, the electroslag speed is 1.4kg / min, the voltage is 25V, and the current is 2.0kA. The ingot was kept at 1050°C for 2 hours, and forged to a square bar with a cross-sectional side length of 45mm×45mm. The final forging temperature was 950°C, and it was air-cooled. The forged square rod was kept at 1050°C for 2 hours, and then rolled into a Φ6.5mm wire rod through multiple passes of hot rolling. Anneal the high-strength steel wire rod: keep it at 1050°C for 1 hour, then water-cool it. After annealing, the high-strength steel wire rod is pickled to remove scale, washed and dried, then treated with film, and then dried at 80°C for wire drawing. The drawing diameter changes in the o...

Embodiment 3

[0041] The high-strength steel wire alloy ingot is first smelted in a vacuum induction furnace with a vacuum degree of 20Pa. The ingot was kept at 1200°C for 4 hours, and forged to a Φ70 electrode sample, and the final forging temperature was 980°C. The alloy is smelted twice by electroslag remelting, the electroslag speed is 2.0kg / min, the voltage is 40V, and the current is 3.0kA. The ingot was kept at 1200°C for 4 hours, and then forged to a square bar with a cross-sectional side length of 45mm×45mm. The final forging temperature was 980°C, and it was air-cooled. The forged square bar was kept at 1200°C for 4 hours, and rolled into a Φ6.5mm wire rod through multi-pass hot rolling. Anneal the high-strength steel wire rod: keep it at 1200°C for 3 hours, then water-cool it. After annealing, the high-strength steel wire rod is pickled to remove scale, washed and dried, then treated with film, and then dried at 120°C for wire drawing. The drawing diameter changes in the order o...

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Abstract

The invention relates to a high strength steel wire for arc additive manufacturing, and a preparation method thereof. The high strength steel wire comprises the following components by mass: 0.09%-0.14% of C, 0.6%-1.0% of Si, 1.5%-2.0% of Mn, 0.5%-0.8% of Mo, 2.0%-3.0% of Ni, 0.3%-0.6% of Cr, no more than 0.1% of Al, no more than 0.02% of P, no more than 0.02% of S, no more than 5 ppm of H and thebalance Fe. Inclusions are less during arc additive manufacturing by using the high strength steel wire, and the continuous forming requirements of the arc additive manufacturing can be met; and thearc additive manufacturing accumulation state has high strength and plasticity.

Description

technical field [0001] The invention relates to the field of materials for arc additive manufacturing, in particular to a high-strength steel wire for arc additive manufacturing and a preparation method thereof. Background technique [0002] Due to its high strength and high toughness, high-strength steel is widely used in ships, vehicles, marine, machinery manufacturing and other fields. With the development of science and technology in recent years, the lightweight of steel components has become a hot issue in various industries. One of the methods to reduce the weight of steel components is to further improve the strength and ductility of steel materials, so as to directly reduce the weight of components by reducing the wall thickness. Another way to reduce the weight of steel components is to reduce unnecessary connectors through structural topology optimization design on the premise of ensuring the function and reliability of components, and use additive manufacturing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/58C22C38/44C22C38/06C22C33/04C21D8/06C21D1/26B33Y70/00
CPCB33Y70/00C21D1/26C21D8/065C22C33/04C22C38/002C22C38/02C22C38/06C22C38/44C22C38/58
Inventor 柏关顺明珠甄立玲王伟王有祁
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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