ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof

A technology of eni6620 and nickel-based electrodes, which is applied in the field of AC ENi6620 nickel-based electrodes and its preparation, can solve the problems of inability to maintain low-temperature toughness, easy to generate magnetic deflection blowing, and insufficient arc blowing force, so as to facilitate the transition of rare earth elements, The effect of stabilizing the arc and improving arc stability

Active Publication Date: 2021-09-21
ATLANTIC CHINA WELDING CONSUMABLES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that when the nickel-based electrode is welding, there will be unstable arc, poor slag coverage, and easy magnetic deflection blowing, etc., and insufficient arc blowing force will easily occur when the current is large or the second half of the electrode is positioned. , the tail is red, the coating falls off, and it cannot maintain good low-temperature toughness under low temperature conditions. The purpose is to provide ENi6620 nickel-based electrodes for AC and their preparation methods and welding methods. Using this scheme, the electrodes meet GB / T 13814ENi6620 technical index, has good welding performance and mechanical properties, especially good low temperature toughness at -196°C

Method used

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  • ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof
  • ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof
  • ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Get pure nickel welding mandrel wire 100Kg, each composition in the welding core is (wt%): C 0.0045%, Mn 0.025%, Si0.019%, P 0.0013%, S 0.0010%, Ni 99.64%, Fe 0.024%, surplus The amount is an essential impurity.

[0058] Take the coating, and the components and parts by mass of the coating are as follows:

[0059] 7.5 parts by weight of marble, 4.5 kg of strontium carbonate, 7 kg of fluorite, 3.5 kg of potassium ice crystal powder, 1 kg of potassium fluoroborate, 3.5 kg of rutile, 6 kg of electrolytic manganese, 27 kg of metallic chromium, 19 kg of ferromolybdenum, 2.5 kg of ferro-titanium, 4 kg of tungsten powder, Ferroniobium 7.5kg, soda ash 1kg, potassium titanate 3kg, rare earth fluoride 1kg, zirconia 1kg, rare earth ferrosilicon 1kg.

[0060] Mix the components of the above drug skin evenly, add pure potassium water glass accounting for 22% of the total mass content of the drug powder, the Baume concentration at 20°C is 42-43°Be, and stir for 10-15min. It is wrap...

Embodiment 2

[0069] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.

[0070] The weight of each component in the medicine skin in this embodiment is as follows: 6.5kg of marble, 5.5kg of strontium carbonate, 8kg of fluorite, 3kg of potassium ice crystal powder, 0.8kg of potassium fluoroborate, 4kg of rutile, 7.2kg of electrolytic manganese, 26.5kg of metallic chromium, ferromolybdenum 17.5kg, ferrotitanium 3kg, tungsten powder 3.6kg, ferroniobium 6.2kg, soda ash 1.2kg, potassium titanate 3.5kg, rare earth fluoride 1.5kg, zirconia 0.5kg, rare earth ferrosilicon 1.5kg.

[0071] The chemical composition of weld deposited metal obtained after welding is as follows:

[0072] C: 0.014wt%, Mn: 2.44wt%, Si: 0.23wt%, S: 0.0054wt%, P: 0.0032wt%, Cr: 13.07wt%, Ni: 71.53wt%, Mo: 5.95wt%, Cu: 0.022wt%, Nb 0.88wt%, Fe 4.51wt%, W1.31wt%, Ta 0.015wt%, and the rest 0.13wt%.

[0073] The mechanical properties of deposited metal are as...

Embodiment 3

[0077] The present embodiment is all identical with embodiment 1 except that each component weight is different in the drug skin.

[0078]The weight of each component in the medicine skin in the present embodiment is as follows: 8 kg of marble, 3 kg of strontium carbonate, 6 kg of fluorite, 4.8 kg of potassium ice crystal powder, 1.2 kg of potassium fluoroborate, 4 kg of rutile, 5.5 kg of electrolytic manganese, 25.8 kg of metallic chromium, and 16 kg of ferromolybdenum , ferro-titanium 4kg, tungsten powder 3.2kg, ferroniobium 5.8kg, soda ash 1.6kg, potassium titanate 3.7kg, rare earth fluoride 3kg, zirconia 2kg, rare earth ferrosilicon 2.4kg.

[0079] The chemical composition of the deposited weld metal after welding is as follows:

[0080] C: 0.016wt%, Mn: 2.25wt%, Si: 0.26wt%, S: 0.0064wt%, P: 0.0038wt%, Cr: 13.19wt%, Ni: 71.61wt%, Mo: 5.65wt%, Cu: 0.018wt%, Nb 0.91wt%, Fe 3.90wt%, W1.33wt%, Ta 0.011wt%, and the rest 0.11wt%.

[0081] The mechanical properties of deposite...

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Abstract

The invention discloses an ENi6620 nickel-based welding rod for alternating current and a preparation method and a welding method of the ENi6620 nickel-based welding rod for alternating current. The ENi6620 nickel-based welding rod comprises a core wire and a coating wrapping the surface of the core wire. The coating is composed of the following components in parts by weight, 6-10 parts of marble, 3-6 parts of strontium carbonate, 6-9 parts of fluorite, 2-5 parts of potassium ice crystal powder, 0.5-1.5 parts of potassium fluoborate, 2-6 parts of rutile, 5-8 parts of electrolytic manganese, 25-30 parts of chromium metal, 15-22 parts of ferromolybdenum, 2-5 parts of ferrotitanium, 3-6 parts of tungsten powder, 5-9 parts of ferrocolumbium, 1-3 parts of sodium carbonate, 2-6 parts of potassium titanate, 1-4 parts of rare earth fluoride, 0.5-2.5 parts of zirconium dioxide and 0.5-3.5 parts of rare earth ferrosilicon. By the adoption of the scheme, the welding rod meets the GB / T 13814ENi6620 technical index, has good welding process performance and mechanical performance, and particularly has good low-temperature toughness under the condition of minus 196 DEG C.

Description

technical field [0001] The invention relates to the technical field of welding material preparation, in particular to ENi6620 nickel-based welding rod for AC and its preparation method and welding method. Background technique [0002] With the acceleration of global industrialization and informatization, the demand for energy in countries around the world has increased sharply. At the same time, problems such as energy shortage and coal burning pollution, which seriously restrict the sustainable development of the economy, are also increasingly exposed. As a high-quality clean fuel and an important chemical raw material, natural gas has become one of the three pillar energy sources in the world today. The status and role of natural gas in social development have become increasingly prominent, and global natural gas production and consumption have shown a steady growth trend. The transportation and storage of liquefied natural gas requires a large number of low-temperature s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/365B23K35/40
CPCB23K35/3033B23K35/365B23K35/404B23K35/0272
Inventor 刘杰蒋勇陈维富张克静杨飞黄义芳
Owner ATLANTIC CHINA WELDING CONSUMABLES
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