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Low-dust environment-friendly alkaline carbon steel welding rod

An environmentally friendly and alkaline technology, applied in the direction of welding media, welding equipment, welding/cutting media/materials, etc., can solve problems such as smoke generation, environmental pollution, and user health hazards, so as to reduce hydrogen partial pressure, reduce pollution, Avoid the effect of cold cracks

Inactive Publication Date: 2017-05-31
天长市通联焊业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is harmful gas hydrogen fluoride in the process of fluoride welding, which produces smoke, which not only pollutes the environment, but also endangers the health of users
There is no report on the application of mica iron oxide to welding rods

Method used

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  • Low-dust environment-friendly alkaline carbon steel welding rod

Examples

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Embodiment 1

[0034] A low-dust environment-friendly basic carbon steel electrode, including a welding core and a coating coated on the surface of the welding core, the raw materials of the coating include: 35% of marble, 3% of barium carbonate, 7% of magnesite, 5% feldspar, 20% mica iron oxide, 3% wollastonite, 12% rutile, 3% manganese sand, 2% sodium alginate, 1% clay, and the balance is iron powder.

Embodiment 2

[0036] A low-dust environment-friendly basic carbon steel electrode, comprising a welding core and a coating coated on the surface of the welding core, the raw materials of the coating include: 20% of marble, 8% of barium carbonate, 3% of magnesite, 7% feldspar, 12% mica iron oxide, 12% wollastonite, 3% rutile, 8% manganese sand, 1.2% sodium alginate, 1.8% clay, and the balance is iron powder; Fe in mica iron oxide 2 o 3 The content is 90wt%.

Embodiment 3

[0038] A low-dust environment-friendly basic carbon steel electrode, comprising a welding core and a coating coated on the surface of the welding core, the raw materials of the coating include: 15% of marble, 4% of barium carbonate, 6% of magnesite, 6% feldspar, 18% mica iron oxide, 6% wollastonite, 10% rutile, 4% manganese sand, 1.8% sodium alginate, 1.2% clay, and the balance is iron powder; in mica iron oxide, Fe 2 o 3 The content is 92wt%, SiO 2 The content is 4wt%.

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Abstract

The invention discloses a low-dust environment-friendly alkaline carbon steel welding rod. The low-dust environment-friendly alkaline carbon steel welding rod comprises a welding core and a covering coating the surface of the welding core. The covering comprises, by weight, 15-35% of marble, 3-10% of barium carbonate, 2-7% of magnesite, 5-8% of feldspar, 10-20% of micaceous iron oxide, 3-15% of wollastonite, 2-12% of rutile, 3-10% of manganese sand, 1-2% of sodium alga acid, 1-2% of chalk and the balance iron powder. The low-dust environment-friendly alkaline carbon steel welding rod has the advantages that the micaceous iron oxide substitutes for fluorides, so that diffusible hydrogen content in weld metal is controlled effectively, low-temperature impact toughness of weld joints is enhanced, smoke is avoided in a welding process, and environmental pollution caused by welding is reduced.

Description

technical field [0001] The invention relates to the technical field of basic welding rods, in particular to a low-dust and environment-friendly basic carbon steel welding rod. Background technique [0002] The basic electrode has excellent mechanical properties and crack resistance, AC and DC, can be used for all-position welding, and is suitable for welding medium carbon steel or low alloy steel. At present, most basic electrodes use fluoride, such as fluorite, as a gas-generating agent, which effectively reduces the hydrogen content in the weld metal. However, fluoride has harmful gas hydrogen fluoride in the process of welding, which produces smoke, which not only pollutes the environment, but also endangers the health of users. Therefore, the development of a basic carbon steel electrode without fluorine is of great significance for the stable and healthy development of the welding wire industry as a whole. [0003] Mica iron oxide is a regular hexagonal flaky single c...

Claims

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Application Information

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IPC IPC(8): B23K35/36B23K35/30
CPCB23K35/3602B23K35/3053
Inventor 卢齐元
Owner 天长市通联焊业有限公司
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