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A kind of welding wire flux core powder, rutile type seamless flux cored welding wire and its preparation and application

A technology of seamless flux-cored welding wire and rutile type, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of increasing the difficulty of formula design and the difference in the initial design of welding wire, and achieve stable mechanical properties of deposited metal and process Good performance and strong cold crack resistance

Active Publication Date: 2021-07-30
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to its structural characteristics, the seamless flux cored wire must be annealed during its manufacturing process, and the annealing process will cause changes in the flux core powder, resulting in a certain difference between the final wire and the initial design, increasing the difficulty of formula design

Method used

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  • A kind of welding wire flux core powder, rutile type seamless flux cored welding wire and its preparation and application
  • A kind of welding wire flux core powder, rutile type seamless flux cored welding wire and its preparation and application
  • A kind of welding wire flux core powder, rutile type seamless flux cored welding wire and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A welding wire flux core powder, comprising the following components by mass percentage:

[0047]

[0048] A rutile-type seamless flux-cored welding wire, comprising the above-mentioned welding wire flux core powder and welding wire sheath low-carbon steel strip (see Table 1 and Table 2 for composition and performance);

[0049] The preparation method of the rutile seamless flux-cored wire comprises the following steps:

[0050] (1) mixing the components of the welding wire flux core powder to obtain the welding wire flux core powder;

[0051] (2) The welding wire sheath low-carbon steel strip adopts the welding wire flux core powder obtained in step (1) to be added online synchronously, roll forming and welding to obtain the welding wire wire rod; then under the protection of inert gas argon, the welding wire wire rod Anneal at 950°C for 4 hours in a well-type annealing furnace; reduce the diameter of the wire rod after annealing, and obtain rutile-type seamless flux...

Embodiment 2

[0053] A welding wire flux core powder, comprising the following components by mass percentage:

[0054]

[0055] A rutile-type seamless flux-cored welding wire, comprising the above-mentioned welding wire flux core powder and welding wire sheath low-carbon steel strip (see Table 1 and Table 2 for composition and performance);

[0056] The preparation method of the rutile seamless flux-cored wire comprises the following steps:

[0057] (1) mixing the components of the welding wire flux core powder to obtain the welding wire flux core powder;

[0058] (2) The welding wire sheath low-carbon steel strip adopts the welding wire flux core powder obtained in step (1) to be added online synchronously, roll forming and welding to obtain the welding wire wire rod; then under the protection of inert gas argon, the welding wire wire rod Anneal at 750°C for 5.5 hours in a well-type annealing furnace; the diameter of the wire rod after annealing is reduced to obtain rutile-type seamles...

Embodiment 3

[0060] A welding wire flux core powder, comprising the following components by mass percentage:

[0061]

[0062] A rutile-type seamless flux-cored welding wire, comprising the above-mentioned welding wire flux core powder and welding wire sheath low-carbon steel strip (see Table 1 and Table 2 for composition and performance);

[0063] The preparation method of the rutile seamless flux-cored wire comprises the following steps:

[0064] (1) mixing the components of the welding wire flux core powder to obtain the welding wire flux core powder;

[0065] (2) The welding wire sheath low-carbon steel strip adopts the welding wire flux core powder obtained in step (1) to be added online synchronously, roll forming and welding to obtain the welding wire wire rod; then under the protection of inert gas argon, the welding wire wire rod Anneal at 600°C for 7 hours in a well-type annealing furnace; reduce the diameter of the wire rod after annealing, and obtain rutile seamless flux-co...

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Abstract

The invention belongs to the technical field of welding materials, and in particular relates to a welding wire flux-cored powder, a rutile-type seamless flux-cored welding wire and its preparation and application. The welding wire flux core powder contains the following components by mass percentage: 30-40% of rutile, 0-5% of aluminum powder, 0-4% of silicon powder, 1-2% of aluminum-magnesium alloy, 7-12% of manganese metal %, zircon sand 1-2%, sodium carbonate 1-2%, iron powder make up 100%. The present invention also provides a rutile-type seamless flux-cored welding wire containing the above-mentioned welding wire flux-cored powder. The welding wire has good manufacturability, and can realize all-position welding under a suitable process specification. The welding process is stable and the mechanical properties of the deposited metal are stable. It is stable and meets the requirements of relevant standards. It is suitable for welding 460MPa grade steel. The content of diffusible hydrogen in the deposited metal of the welding wire is low, and the ability to resist cold cracks is strong.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a welding wire flux-cored powder, a rutile-type seamless flux-cored welding wire and its preparation and application. Background technique [0002] In recent years, the structural adjustment and product upgrading process of welding material products has been significantly accelerated. In the technical fields of marine engineering and shipbuilding, flux-cored welding wire has gradually replaced manual welding rods and solid welding wires due to its excellent manufacturability. In addition to the advantages of ordinary flux-cored wire, seamless flux-cored wire has great technical advantages in welding in shipbuilding, ocean engineering and other fields due to its excellent moisture resistance and good automation adaptability. . [0003] Due to its structural characteristics, the seamless flux cored wire must be annealed during the manufacturing process, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368B23K35/30
CPCB23K35/0266B23K35/3053B23K35/368
Inventor 张文军王亚彬范会卿
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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