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A kind of flux core material and welding wire with anti-cracking performance and the manufacturing method of the welding wire

A production method and flux core technology, applied in the direction of welding/cutting medium/material, welding equipment, manufacturing tools, etc., can solve the problems of high process difficulty, gaps, new crack arresting steel material welding environment and demanding process requirements, etc. Achieve the effect of solving the harsh welding environment and process requirements

Active Publication Date: 2021-06-29
聚力新材料科技(日照)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although domestic iron and steel enterprises have successfully developed such products, the new anti-crack steel material has extremely strict requirements on the welding environment and process, and the process is difficult, so the supporting welding materials still mainly rely on imported products. The performance level of welding materials produced in my country Compared with the top international level, there is still a gap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Drug core material components: rutile 30Kg, quartz 2Kg, feldspar 3Kg, potassium fluoride 1Kg, rare earth niobium 1Kg, rare earth iridium 0.5Kg, magnesium powder 2Kg, bauxite 3Kg, low carbon manganese 5Kg, metal nickel 0.5Kg, metal Chromium 1.2Kg, titanium iron 3Kg, modified anhydrous polytetrafluoroethylene 4Kg.

[0018] Preparation method of high strength and toughness crack arresting flux cored wire:

[0019] (1) Dry rutile, quartz, feldspar, and bauxite at 950°C for 12 hours, and other medicinal powders at 270°C for 12 hours, mix the above-mentioned medicinal core materials after drying, and stir well to obtain the formula medicinal powder to be prepared. use.

[0020] (2) Get a low-carbon steel strip with a thickness of 1.0mm and a width of 14mm, longitudinally cut it, then clean it with a cleaning solution, roll a U-shaped groove, add the powder described in step (1) into the U-shaped groove, then close and reduce the diameter , wire drawing, and wire take-up to ...

Embodiment 2

[0023] Drug core material components: rutile 25Kg, quartz 4.5Kg, feldspar 3Kg, potassium fluoride 1.5Kg, rare earth niobium 1.2Kg, rare earth iridium 0.6Kg, magnesium powder 2Kg, bauxite 4Kg, low carbon manganese 3Kg, metal nickel 0.5 Kg, metal chromium 1.0Kg, titanium iron 2.5Kg, modified anhydrous polytetrafluoroethylene 3Kg.

[0024] Preparation method of high strength and toughness crack arresting flux cored wire:

[0025] Dry rutile, quartz, feldspar, and bauxite at 920°C for 15 hours, and dry other medicinal powders at 280°C for 15 hours. Mix the above-mentioned medicinal core materials after drying, and stir well to obtain a formula medicinal powder for use.

[0026] (1) Get a low-carbon steel strip with a thickness of 0.8mm and a width of 14mm, longitudinally cut it, then clean it with a cleaning solution, roll a U-shaped groove, add the powder described in step (1) into the U-shaped groove, then close and reduce the diameter , wire drawing, and wire take-up to obtain...

Embodiment 3

[0029] Drug core material components: rutile 30Kg, quartz 6Kg, feldspar 2Kg, potassium fluoride 1Kg, rare earth niobium 1Kg, rare earth iridium 0.5Kg, magnesium powder 2Kg, bauxite 3Kg, low carbon manganese 5Kg, metal nickel 1Kg, metal chromium 0.6Kg, ferro-titanium 3Kg, modified anhydrous polytetrafluoroethylene 2Kg.

[0030] Preparation method of high strength and toughness crack arresting flux cored wire:

[0031] (1) Dry rutile, quartz, feldspar, and bauxite at 980°C for 18 hours, and dry other medicinal powders at 290°C for 18 hours, mix the above-mentioned medicinal core materials after drying, and stir well to obtain the formula medicinal powder to be prepared. use.

[0032] (2) get the carbon steel strip of thickness 0.9mm, width 13mm, slitting, then clean through cleaning solution, roll U-shaped groove, add the medicated powder described in step (1) in the U-shaped groove, then close, reduce diameter, Draw and take up the wire to obtain the welding wire. The core f...

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PUM

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Abstract

The invention provides a drug core material with anti-crack performance, the drug core material is composed of the following raw materials in parts by mass: 20-30 parts of rutile, 2-6 parts of quartz, 1-4 parts of feldspar, and potassium fluoride 1‑2 parts, 1‑3 parts of rare earth niobium, 0.5‑1 part of rare earth iridium, 2‑6 parts of magnesium powder, 3‑5 parts of bauxite, 3‑5 parts of low carbon manganese, 0.3‑1 part of metal nickel, metal 0.6-1.2 parts of chromium, 2-3 parts of ferro-titanium, and 1-4 parts of modified anhydrous polytetrafluoroethylene. The invention also provides a welding wire containing the above flux core material and a welding wire manufacturing method. The flux core material and welding wire of the present invention and the manufacturing method of the welding wire can make the deposited metal structure obtain polygonal ferrite and acicular ferrite structure with crack arresting performance, and achieve an effective grain diameter of less than 8mm, so that the deposited metal The metal has good crack arrest performance, which can solve the problem that the new crack arrest material has strict requirements on the welding environment and process, and the process is difficult.

Description

technical field [0001] The invention relates to the technical field of welding materials, in particular to a flux core material with crack arresting performance, welding wire and a manufacturing method of the welding wire. Background technique [0002] With the rapid development of the shipping industry, the construction of ultra-large container ships not only brings great opportunities and challenges to expand the international market, environmental protection, port construction, etc., but also brings challenges to shipbuilding materials. For this reason, high-strength and large-thickness steel plates are generally used for the hull of container carriers. While the high-strength and large-thickness steel plate meets the performance requirements, the stress state of the steel plate changes from a plane stress state to a plane strain state, and the crack resistance of the material decreases. Brittle fractures of materials have caused many accidents on large container ships. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368B23K35/40
CPCB23K35/0266B23K35/3608B23K35/406
Inventor 乔吉春孟波冯素英许慧敏杨涛于保刚
Owner 聚力新材料科技(日照)有限公司