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High-strength high-toughness low-alloy steel wire as well as preparation method and application thereof

A low-alloy steel, high-strength and high-toughness technology, applied in the field of wire material manufacturing, can solve problems such as not being able to meet the demand, and achieve the effects of small quantity, increased strength, and excellent tensile properties

Inactive Publication Date: 2021-05-28
ANSTEEL BEIJING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For laser fused filament additive manufacturing technology, the existing filaments cannot meet the demand

Method used

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  • High-strength high-toughness low-alloy steel wire as well as preparation method and application thereof
  • High-strength high-toughness low-alloy steel wire as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0036] The embodiment of the second aspect of the present invention also provides a method for preparing a high-strength, high-toughness low-alloy steel wire, which includes:

[0037] a. Vacuum melting the raw materials with the designed ratio to obtain ingots;

[0038] b. Forging the ingot obtained in step a to obtain a rod;

[0039] c. Rolling the bars obtained in step b to obtain wire rods;

[0040] d. Perform annealing treatment on the wire rod obtained in step c, and then perform wire drawing to obtain high-strength, high-toughness and low-alloy steel wire.

[0041] According to the technical effects of the method for preparing high-strength, high-toughness, low-alloy steel wire according to the embodiment of the second aspect of the present invention, 1. The wire obtained by the method of the embodiment of the present invention can be used for laser additive manufacturing, and its forming stability is high , the process adaptability is good, the number of oxidized incl...

Embodiment 1

[0049] A vacuum induction furnace is used to smelt the designed ratio of raw materials, and the vacuum degree is 5Pa. The ingot obtained by vacuum melting was kept at 1150°C for 4 hours, forged into a square bar, and the final forging temperature was 980°C, and air-cooled. The forged square bar was kept at 1150°C for 3 hours, and rolled into a Φ5.5mm wire rod through multiple hot rolling. The high-strength steel wire rod is annealed, and the annealing conditions are: heat preservation at 1100 ° C for 3 hours, and water cooling. After the annealed high-strength steel wire rod is pickled and phosphated, washed and dried, it is treated with a film, and after drying, it is drawn. The diameter of the drawing changes in the order of Φ5.5mm-Φ5.0mm-Φ4.6mm-Φ4 .3mm-Φ4.0mm-Φ3.7mm-Φ3.4mm-Φ3.2mm, followed by online annealing at 1050°C-Φ2.5-Φ2.1-Φ1.9-Φ1.7-Φ1.5-Φ1.3-Φ1 .2. After the drawing is completed, clean, dry, oil, adjust the loose diameter and warp distance, wind the coil, and vacuu...

Embodiment 2

[0052] A vacuum induction furnace is used to smelt the designed ratio of raw materials, and the vacuum degree is 5Pa. The ingot obtained by vacuum melting was kept at 1100°C for 4 hours, forged into a square rod, and the final forging temperature was 930°C, and air-cooled. The forged square bar was kept at 1100°C for 4h, and rolled into a Φ5.5mm wire rod through multiple hot rolling. The high-strength steel wire rod is annealed, and the annealing conditions are: heat preservation at 1100 ° C for 3 hours, and water cooling. After the annealed high-strength steel wire rod is pickled and phosphated, washed and dried, it is treated with a film, and after drying, it is drawn. The diameter of the drawing changes in the order of Φ5.5mm-Φ5.0mm-Φ4.6mm-Φ4 .3mm-Φ4.0mm-Φ3.7mm-Φ3.4mm-Φ3.2mm, followed by online annealing at 1050°C-Φ2.5-Φ2.1-Φ1.9-Φ1.7-Φ1.5-Φ1.3-Φ1 .2. After the drawing is completed, clean, dry, oil, adjust the loose diameter and warp distance, wind the coil, and vacuum sea...

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Abstract

The invention discloses a high-strength high-toughness low-alloy steel wire which comprises the following components in percentage by mass: 0.03-0.09% of C, 0.1-0.5% of Si, 0.9-1.5% of Mn, 0.5-0.9% of Mo, 2.2-2.8% of Ni, 0.3-0.7% of Cr, less than or equal to 0.01% of P, less than or equal to 0.01% of S and the balance of Fe and inevitable impurities. The invention also discloses a preparation method of the wire, which comprises the following steps: a, carrying out vacuum melting on the raw materials with a designed ratio to obtain a cast ingot; B, forging the cast ingot to obtain a bar; C, rolling the bar to obtain a wire rod; and d, annealing the wire rod, and then drawing the wire to obtain the wire . The high-strength high-toughness low-alloy steel wire can adapt to an inert gas environment in laser additive manufacturing, does not need special deoxidation and deslagging, can continuously work, does not need copper plating, and is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of wire material manufacturing, and specifically relates to a high-strength, high-toughness low-alloy steel wire, in particular, a method for preparing a high-strength, high-toughness low-alloy steel wire, and further, to the high-strength, high-toughness low-alloy steel wire Applications in laser additive manufacturing. Background technique [0002] The metal components of major equipment in the field of shipbuilding and ocean engineering have the characteristics of large size, small batch, high cost and difficult manufacturing. Due to its high strength and high toughness, high-strength steel is widely used in ships, marine engineering, vehicles and other fields. Laser additive manufacturing is an integrated manufacturing technology that takes into account precise forming and high performance requirements. It is a composite technology of laser processing and arc welding wire, which provides new ideas and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44B33Y70/00B33Y10/00C21D1/26C21D9/52B21C37/04
CPCB21C37/04B33Y10/00B33Y70/00C21D1/26C21D9/525C22C38/02C22C38/04C22C38/44
Inventor 张大越刘旭明王军生张岩张建李彬周张栋
Owner ANSTEEL BEIJING RES INST
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