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High tenacity and low hydrogen type agglomerated flux for ocean engineering and preparation method thereof

A technology for sintering flux and marine engineering, applied in welding equipment, metal processing equipment, welding medium, etc., to achieve the effect of improving purity, reducing oxygen content, and good crack resistance

Active Publication Date: 2015-11-25
武汉铁锚焊接材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only a few domestic manufacturers can provide very few welding materials so far, and there is a big gap with foreign welding materials.

Method used

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  • High tenacity and low hydrogen type agglomerated flux for ocean engineering and preparation method thereof
  • High tenacity and low hydrogen type agglomerated flux for ocean engineering and preparation method thereof
  • High tenacity and low hydrogen type agglomerated flux for ocean engineering and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] This embodiment provides a high-toughness low-hydrogen sintered flux for marine engineering, the sintered flux is composed of the following components by weight: MgO: 21%, CaF 2 : 28%, Al 2 O 3 : 18%, TiO 2 : 5%, SiO 2 : 18%, CaO: 4%, Na 3 AIF 6 : 2%, MnO: 2%, S≤0.015%, P≤0.025%, the balance is inevitable impurities.

[0032] The preparation method of the sintered flux is as follows: after the required raw materials are re-inspected and qualified, they are sieved and weighed according to the formula, and then put into a dry stirrer for dry stirring, and the uniformly stirred powder is put into a wet stirrer, Add water glass with 20% of the powder mass for wet stirring, fully stir evenly, and send the stirred starting material to the granulator for granulation. Dry at the temperature of ℃, remove the moisture and sieve, control the particle size of 10-60 mesh flux and send it to the sintering furnace for sintering, the sintering temperature is 800-850 ℃, and the si...

Embodiment 2

[0036] This embodiment provides a high-toughness low-hydrogen sintered flux for marine engineering, the sintered flux is composed of the following components by weight: MgO: 18%, CaF 2 : 30%, Al 2 O 3 : 18%, TiO 2 : 1%, SiO 2 : 18%, CaO: 6%, Na 3 AIF 6 : 2%, MnO: 6%, S≤0.015%, P≤0.025%, the balance is inevitable impurities.

[0037]The preparation method of the sintered flux is as follows: after the required raw materials are re-inspected and qualified, they are sieved and weighed according to the formula, and then put into a dry stirrer for dry stirring, and the uniformly stirred powder is put into a wet stirrer, Add water glass with 20% of the powder mass for wet stirring, fully stir evenly, and send the stirred starting material to the granulator for granulation. Dry at the temperature of ℃, remove the moisture and sieve, control the particle size of 10-60 mesh flux and send it to the sintering furnace for sintering, the sintering temperature is 800-850 ℃, and the sin...

Embodiment 3

[0041] This embodiment provides a high-toughness low-hydrogen sintered flux for marine engineering, the sintered flux is composed of the following components by weight: MgO: 22%, CaF 2 : 28%, Al 2 O 3 : 19%, TiO 2 : 1%, SiO 2 : 22%, CaO: 3%, Na 3 AIF 6 : 2%, MnO: 2%, S≤0.015%, P≤0.025%, the balance is inevitable impurities.

[0042] The preparation method of the sintered flux is as follows: after the required raw materials are re-inspected and qualified, they are sieved and weighed according to the formula, and then put into a dry stirrer for dry stirring, and the uniformly stirred powder is put into a wet stirrer, Add water glass with 20% of the powder mass for wet stirring, fully stir evenly, and send the stirred starting material to the granulator for granulation. Dry at the temperature of ℃, remove the moisture and sieve, control the particle size of 10-60 mesh flux and send it to the sintering furnace for sintering, the sintering temperature is 800-850 ℃, and the si...

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Abstract

The invention provides high tenacity and low hydrogen type agglomerated flux for ocean engineering. The high tenacity and low hydrogen type agglomerated flux is composed of, by weight, 18%-23% of MgO, 28%-32% of CaF2, 18%-22% of Al2O3, 1%-5% of TiO2, 18%-22% of SiO2, 3%-7% of CaO, 2%-5% of Na3AIF6, 2%-6% of MnO, 0-0.015% of S and 0-0.025% of P. By means of the high tenacity and low hydrogen type agglomerated flux, weld metal has good welding process properties such as sediment separation and pore resistance and a good anti-cracking property; the Charpy impact energy is relatively high at the temperature of -40 DEG C and the content of diffusible hydrogen meets the requirement of ultra-low-hydrogen.

Description

technical field [0001] The invention belongs to the technical field of welding materials, in particular to a high-toughness low-hydrogen sintered flux for marine engineering and a preparation method thereof, which is suitable for submerged arc matching welding process of 460MPa grade steel for marine engineering. Background technique [0002] There are various types of steel used in offshore engineering, and the strength coverage span is large. For each strength steel plate, well-known foreign welding consumable manufacturers have a relatively complete series of welding materials. However, only a few domestic manufacturers can provide very few welding materials so far, and there is a big gap with foreign welding materials. [0003] Therefore, in view of the large gap between the existing technology and foreign welding materials, it is urgent to carry out research on the development and engineering application of 460MPa welding materials for marine engineering, and finally re...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K35/40
CPCB23K35/362B23K35/40
Inventor 刘东刘玉双祝海超卢伟郑成概王文元
Owner 武汉铁锚焊接材料股份有限公司
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