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A kind of flux-cored welding wire and its preparation method

A flux-cored welding wire and flux-cored technology, applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as unfavorable environmental protection, potential safety hazards, and easy occurrence of splashes, so as to reduce the number of spark splashes, reduce the possibility of Good slag effect

Active Publication Date: 2020-03-31
天津沃盾耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the flux-cored welding wire in the prior art is prone to spatter when welding metal, which is not conducive to environmental protection, and at the same time, it also buryes hidden dangers in the production process

Method used

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  • A kind of flux-cored welding wire and its preparation method
  • A kind of flux-cored welding wire and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] S1, carbon, manganese, silicon, chromium, sodium salt, potassium salt, ferrite, Al-Ti-Ca composite deoxidizer and iron are made into powder respectively in advance;

[0037] S2. Weigh 3kg carbon, 0.5kg manganese, 0.5kg silicon, 22kg chromium, 1kg sodium carbonate, 1kg sodium silicate, 0.1kg potassium carbonate, 0.1kg potassium silicate, 4kg bauxite, 9kg Al-Ti-Ca compound Add deoxidizer and 58.8kg iron into the mixer for uniform mixing;

[0038] S3. Before rolling, first clean off the grease, dust and sundries on the low-carbon steel strip, and then dry it with high-temperature nitrogen at a wind speed of 15m / s to 20m / s.

[0039] S4. Roll the low-carbon steel strip into a "U" shape first, and fill it with uniformly mixed medicinal powder, then roll the low-carbon steel strip into an "O", and seal the medicinal powder in the low-carbon steel strip to obtain Semi-finished welding wire;

[0040] S5. Apply a lubricating coating on the surface of the semi-finished welding w...

Embodiment 2

[0042] S1, carbon, manganese, silicon, chromium, sodium salt, potassium salt, ferrite, Al-Ti-Ca composite deoxidizer and iron are made into powder respectively in advance;

[0043] S2. Weigh 5kg carbon, 2.5kg manganese, 2.5kg silicon, 27kg chromium, 4kg sodium carbonate, 0.1kg potassium carbonate, 0.2kg potassium silicate, 0.1kg potassium titanate, 8kg bauxite, 16kg Al-Ti-Ca Add composite deoxidizer and 34.6kg iron into the mixer for uniform mixing;

[0044] S3. Before rolling, first clean off the grease, dust and sundries on the low-carbon steel strip, and then dry it with high-temperature nitrogen at a wind speed of 15m / s to 20m / s.

[0045] S4. Roll the low-carbon steel strip into a "U" shape first, and fill it with uniformly mixed medicinal powder, then roll the low-carbon steel strip into an "O", and seal the medicinal powder in the low-carbon steel strip to obtain Semi-finished welding wire;

[0046] S5. Apply a lubricating coating on the surface of the semi-finished we...

Embodiment 3

[0048] S1, carbon, manganese, silicon, chromium, sodium salt, potassium salt, ferrite, Al-Ti-Ca composite deoxidizer and iron are made into powder respectively in advance;

[0049] S2. Weigh 4kg carbon, 1.5kg manganese, 1.5kg silicon, 24.5kg chromium, 3kg sodium silicate, 0.2kg potassium carbonate, 0.1kg potassium titanate, 6kg bauxite, 12.5kg Al-Ti-Ca composite deoxidizer And 46.7kg iron joins in the mixer and mixes evenly;

[0050] S3. Before rolling, first clean off the grease, dust and sundries on the low-carbon steel strip, and then dry it with high-temperature nitrogen at a wind speed of 15m / s to 20m / s.

[0051] S4. Roll the low-carbon steel strip into a "U" shape first, and fill it with uniformly mixed medicinal powder, then roll the low-carbon steel strip into an "O", and seal the medicinal powder in the low-carbon steel strip to obtain Semi-finished welding wire;

[0052] S5. Apply a lubricating coating on the surface of the semi-finished welding wire, and draw the ro...

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Abstract

Disclosed is a flux-cored wire. The flux-cored wire includes a mild-carbon steel strip and a flux core. The flux core includes, by weight, 3.0-5.0% of carbon, 0.5-2.5% of manganese, 0.5-2.5% of silicon, 22.0-27.0% of chromium, 2.0-4% of sodium salt, 0.2-0.4% of kali salt, 4-8% of slagging constituents, 9-16% of deoxidizing agents and the balance iron. The flux-cored wire is convenient to process,and meanwhile, during welding, the splash range is small; waste of raw materials is greatly reduced; the production safety hazard is also weakened, so that production efficiency is greatly improved; in addition, a fusion layer after flux-cored welding is just high chromium cast iron, and the high chromium cast iron has high hardness; and therefore, the service life of the fusion layer is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of metal welding materials, in particular to a flux-cored welding wire and a preparation method thereof. Background technique [0002] Overlay welding is a process in which materials with certain properties are clad onto the surface of the substrate (weldment) by using a welding heat source to form a metallurgical bond. [0003] The purpose of surfacing welding is to modify the metal surface by means of welding to obtain the required wear-resistant, heat-resistant, corrosion-resistant and other special properties of the deposited layer, or to restore the size of the workpiece caused by wear or processing errors Insufficient, the application of these two aspects is called repair and strengthening in surface engineering. Overlay welding can not only repair the old metal parts, restore the parts or have a new shape, but also form a composite layer on the surface of the metal parts to obtain new, specific wear ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40
CPCB23K35/0266B23K35/3086B23K35/368B23K35/406
Inventor 赵有恒李昆张军邓航海任海强马俊青
Owner 天津沃盾耐磨材料有限公司
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