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Nickel-based welding rod used for ultralow-temperature steel and preparation method of nickel-based welding rod

A nickel-based electrode, ultra-low temperature technology, used in welding equipment, welding media, manufacturing tools, etc., can solve problems such as research description, and achieve the effects of reducing magnetic bias blowing, simple preparation method, and convenient operation

Active Publication Date: 2015-11-25
ATLANTIC CHINA WELDING CONSUMABLES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, my country has not put this welding material for ultra-low temperature steel into the market, and there is no relevant literature to study and describe this welding material. In foreign countries, ENiCrMo-4 or ENiCrMo-6 electrodes are often used for storage tank equipment in ultra-low temperature environments.

Method used

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  • Nickel-based welding rod used for ultralow-temperature steel and preparation method of nickel-based welding rod
  • Nickel-based welding rod used for ultralow-temperature steel and preparation method of nickel-based welding rod
  • Nickel-based welding rod used for ultralow-temperature steel and preparation method of nickel-based welding rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Get medicinal powder, take medicinal powder to account for the mass percentage of welding rod, each component of medicinal powder and its mass parts are as follows:

[0036] 8% marble, 0.5% sodium fluoride, 0.33% soda ash, 0.6% ferro-niobium, 1.4% ferro-molybdenum, 2.8% rutile, 2.2% quartz, 7% fluorite, 1.3% metal chromium, 0.5% CMC, 1.4 potassium carbonate %.

[0037] The mass of the welding core is 69.64%, and the composition meets the following requirements (wt%): the mass percentage of the welding core composition is C0.07-0.10%, Mn1.0-1.5, Si≤0.10, S:≤0.004, P≤0.005Cr15.0 -17.0, Mo3.5-4.0, Cu≤0.10, Fe4.0-5.0, Nb2.0-2.5, W0.8-1.2, the balance is nickel and trace impurities, the total weight of each component in the above welding core is 100 %.

[0038] The preparation method is as follows: mix the components of the above-mentioned medicinal powder evenly, add water glass with a mass ratio of 41-43Be' potassium silicate to sodium silicate at 20°C and a mass ratio o...

Embodiment 2

[0040] Get medicinal powder, take medicinal powder to account for the mass percentage of welding rod, each component of medicinal powder and its mass parts are as follows:

[0041] 9% marble, 0.4% sodium fluoride, 0.33% soda ash, 0.6% ferro-niobium, 1.5% ferro-molybdenum, 2.7% rutile, 2% quartz, 7% fluorite, 1.2% metal chromium, 0.5% CMC, 1.4 potassium carbonate %.

[0042] The binder accounts for 28% of the total mass content of the medicinal powder.

[0043] Welding core accounts for 73.42% of the total electrodes.

[0044] Then bake at a low temperature of 80-90°C for 1.5-2 hours, and at a high temperature of 300°C for 1-2 hours.

[0045] Other operation steps are as embodiment 1.

Embodiment 3

[0047] A special nickel-based electrode for ultra-low temperature steel of the present invention needs to strictly control the content of impurity elements in the deposited metal. The rod wire meeting the following composition requirements is used to produce the electrode, and the alkaline slag system is used to ensure that the deposited metal obtains good mechanical properties. performance.

[0048] Take the powder, the components of the powder and their mass parts are as follows: 7.5% marble, 0.47% sodium fluoride, 0.33% soda ash, 0.6% ferro-niobium, 1.4% ferro-molybdenum, 2.65% rutile, 2.8% quartz, 7 fluorite %, metal chromium 1.3%, CMC 0.5%, potassium carbonate 1.4%.

[0049] The mass of the welding core is 372.1g, and the composition meets the following requirements (wt%): the mass percentage of the welding core composition is C0.07-0.10%, Mn1.0-1.5, Si≤0.10, S:≤0.004, P≤0.005Cr15.0 -17.0, Mo3.5-4.0, Cu≤0.10, Fe4.0-5.0, Nb2.0-2.5, W0.8-1.2, the balance is nickel and trac...

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Abstract

The invention belongs to the technical field of welding materials and particularly relates to a nickel-based welding rod used for ultralow-temperature steel and a preparation method of the nickel-based welding rod. The welding rod comprises a welding core wire, chemical powder and an adhesion agent; the mass ratio between the chemical powder and the welding rod is 25-27:100, and the mass ratio between the chemical powder and the adhesion agent is 100:25-30. When the welding rod prepared through the preparation method is welded, the electric arc is stable, the splatter is slight, the sediment separation is good, the form is beautiful, the welding can be conducted through alternate currents or direct currents, and the all-position operation performance is good. The nickel-based welding rod is mainly used for the nickel-based alloy welding with heat resistance and corrosion resistance requirements, and the nickel-based welding rod can also be used for the welding of some alloy hard to weld and dissimilar steel.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a nickel-based welding rod for ultra-low temperature steel and a preparation method thereof. Background technique [0002] With the widespread use of 9Ni steel at home and abroad, and the rapid increase of LNG storage tank projects, the demand for welding materials for ultra-low temperature steel has also increased rapidly, resulting in the continuous increase in the cost of LNG ultra-low temperature storage tank projects. Therefore, it is of great and far-reaching strategic significance to realize the localization of inner tank materials of LNG ultra-low temperature storage tanks. There is no uniform standard for the concept of ultra-low temperature in the world, but at present, various liquefied petroleum gas, liquid nitrogen, liquid oxygen and other production, storage containers and pipelines, as well as equipment serving in cold regions are called cryogenic equipment. Steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/36B23K35/40
CPCB23K35/3033B23K35/36B23K35/40
Inventor 霍玲玲黄金祥杨汉斌刘杰潘伍覃黄义芳胡金涛
Owner ATLANTIC CHINA WELDING CONSUMABLES
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