600-MPa-grade fire-resistant weather-resistant steel welding rod

A fire and weather resistance, welding rod technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problem of not being able to guarantee the fire and weather resistance of the overall structure of the building, and achieve the control of diffusible hydrogen content, soft arc sound, splashing small effect

Active Publication Date: 2021-06-18
TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there is no refractory and weather-resistant welding rod that matches Q460 refractory and weather-resistant steel, and the fire-resistant and weather-resistant performance of the overall structure of the building cannot be guaranteed. Therefore, it is necessary to invent an electrode that is similar in mechanical properties and chemical composition to Q460 refractory and weather-resistant steel. welding requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A 600MPa grade refractory and weathering steel welding rod.

[0034] The coating composition is: 45 parts of marble, 26 parts of fluorite, 5 parts of 45# ferrosilicon, 0.42 parts of electrode graphite, 6 parts of rutile, 4 parts of potassium titanate, 5 parts of metal manganese, 1.3 parts of soda ash, 2.6 parts of silicon powder, 1.9 parts of nickel powder, 0.83 parts of molybdenum powder, 0.42 parts of ferrovanadium, 0.67 parts of copper powder, 0.43 parts of metal chromium, and 0.43 parts of tungsten powder.

[0035] In the welding process, this embodiment has good welding process characteristics such as small spatter, good fluidity of molten pool, uniform slag coverage, soft arc sound, beautiful weld shape, and easy slag removal. Analyze the chemical composition and mechanical properties of the weld metal after welding. The chemical composition of the deposited metal is: C: 0.065wt%, Mn: 1.26wt%, Si: 0.21wt%, S: 0.007wt%, P: 0.011wt%, Mo: 0.30wt%, Ni: 0.69wt%, Cr: ...

Embodiment 2

[0037] A 600MPa grade refractory and weathering steel welding rod.

[0038] The composition of the coating is: 44 parts of marble, 23 parts of fluorite, 4 parts of 45# ferrosilicon, 0.40 parts of electrode graphite, 8 parts of rutile, 6 parts of potassium titanate, 4 parts of metal manganese, 0.4 parts of soda ash, 5 parts of silicon micropowder, 2.2 parts of nickel powder, 1.15 parts of molybdenum powder, 0.61 parts of ferrovanadium, 0.45 parts of copper powder, 0.34 parts of metal chromium, and 0.45 parts of tungsten powder.

[0039] In the welding process, this embodiment has good welding process characteristics such as small spatter, good fluidity of molten pool, uniform slag coverage, soft arc sound, beautiful weld shape, and easy slag removal. Analyze the chemical composition and mechanical properties of the weld metal after welding. The chemical composition of the deposited metal is: C: 0.062wt%, Mn: 1.01wt%, Si: 0.25wt%, S: 0.006wt%, P: 0.012wt%, Mo: 0.42wt%, Ni: 0.80...

Embodiment 3

[0041] A 600MPa grade refractory and weathering steel welding rod.

[0042] The composition of the coating is: 43 parts of marble, 26 parts of fluorite, 4 parts of 45# ferrosilicon, 0.43 parts of electrode graphite, 8 parts of rutile, 4 parts of potassium titanate, 3.6 parts of metal manganese, 0.5 parts of soda ash, 5 parts of silicon micropowder, 3.0 parts of nickel powder, 0.88 parts of molybdenum powder, 0.46 parts of ferrovanadium, 0.45 parts of copper powder, 0.25 parts of metal chromium, and 0.43 parts of tungsten powder.

[0043] In the welding process, this embodiment has good welding process characteristics such as small spatter, good fluidity of molten pool, uniform slag coverage, soft arc sound, beautiful weld shape, and easy slag removal. Analyze the chemical composition and mechanical properties of the weld metal after welding. The chemical composition of the deposited metal is: C: 0.066wt%, Mn: 0.96wt%, Si: 0.25wt%, S: 0.007wt%, P: 0.014wt%, Mo: 0.32wt%, Ni: 1....

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Abstract

The invention provides a 600-MPa-grade fire-resistant weather-resistant steel welding rod. Deposited metal of the 600-MPa-grade fire-resistant weather-resistant steel welding rod comprises the following chemical components in percentages by mass: 0.6-1.5wt% of Ni, 0.10-0.6wt% of Cr, 0.1-0.4wt% of Cu, 0.03-0.12wt% of V, 0.05-0.17wt% of W, 0.25-0.9wt% of Mo, 0.5-1.4wt% of Mn, 0.1-0.7wt% of Si, 0.04-0.11wt% of C, 0.005-0.009wt% of S, 0.01-0.02wt% of P and the balance of Fe and inevitable impurities, and the sum of the mass percentages of all the components is 100%. The yield strength of the fire-resistant weather-resistant steel welding rod at the high temperature of 600 DEG C is still 307 MPa or above, and the low-temperature (-40 DEG C) impact performance is good.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a 600MPa grade refractory and weather-resistant steel welding rod. Background technique [0002] The high-temperature yield strength of ordinary building steel above 350°C is lower than 2 / 3 of the strength at room temperature, and the spraying of refractory coatings endangers the health of workers, pollutes the environment, delays the construction period, increases the cost of steel structure construction, and reduces the effective use of the building. These problems New challenges are presented to the fire performance of steel used in construction. With the rapid development of the high-rise building industry in the past 20 years, Japan, China and other foreign iron and steel enterprises have launched and applied 400MPa, 490MPa, 520MPa series of fire-resistant steel for construction, and domestic Baosteel, Anshan Iron and Steel, and Shougang have also devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/30B23K35/36
CPCB23K35/3053B23K35/3601B23K35/0266Y02P10/20
Inventor 白英华朱藤辉张敬禹唐艳丽高艳静牛月军
Owner TIANJIN GOLDEN BRIDGE WELDING MATERIALS GRP
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