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Ultra supercritical heat-resistant steel welding rod and production method thereof

An ultra-supercritical and production method technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of large welding spatter, poor weld formation, high cost, etc., and achieve excellent high temperature creep performance, Good process performance, the effect of improving mechanical properties

Inactive Publication Date: 2014-04-23
ATLANTIC CHINA WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ultra-supercritical matching electrodes in the existing market, on the one hand, the cost of importing from abroad is high and the cycle is long; Poor forming, poor slag removal performance and other disadvantages
And it is difficult to achieve the best welding process performance and mechanical properties at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Take the drug skin, the components of the drug skin and their mass fractions are as follows: marble: 30%, fluorite: 30%, rutile: 7%, ferromolybdenum: 8.0%, metal chromium: 30%, silicon micropowder: 5%, silicon Iron: 4%, Ferro-Vanadium: 1.5%, Ferro-Niobium 0.6%, Nickel Powder: 2.3%, Soda Ash: 0.6%, CMC: 0.6%, Amorphous Graphite: 0.3%, Ferrochromium Nitride: 0.9%, Electrolytic Manganese: 2.2%, cobalt powder: 3.3%, ferroboron: 4.5%.

[0068] Take the welding core, the welding core is selected from H08A welding core with low content such as sulfur, phosphorus, arsenic and aluminum, and the chemical composition mass percentage is: C: ≤0.05%; Mn: 0.30-0.60%; Si: ≤0.15%; S: ≤0.006%; P: ≤0.006%; Cr: ≤0.20%; Ni: ≤0.20%; Mo: ≤0.20%; Nb: ≤0.07%; N: ≤0.07%; Al: ≤0.025%; Cu: ≤0.10%; As: ≤0.006%; the balance is Fe.

[0069] After mixing the components of the raw materials of the coating evenly, add 42-44° Be"d potassium sodium water glass accounting for 18-25% of the mass content o...

Embodiment 2

[0072] Take the drug skin, the components of the drug skin and their mass fractions are as follows: marble: 36%, fluorite: 25%, rutile: 76%, ferromolybdenum: 8.0%, metal chromium: 29.6%, silicon micropowder: 5%, silicon Iron: 4.6%, Ferro-Vanadium: 1.5%, Ferro-Niobium 0.6%, Nickel Powder: 2.2%, Soda Ash: 0.6%, CMC: 0.6%, Amorphous Graphite: 0.3%, Ferrochromium Nitride: 1.0%, Electrolytic Manganese: 2.2%, cobalt powder: 3.4%, ferroboron: 4.3%.

[0073] Take the welding core, the welding core is selected from H08A welding core with low content such as sulfur, phosphorus, arsenic and aluminum, and the chemical composition mass percentage is: C: ≤0.05%; Mn: 0.30-0.60%; Si: ≤0.15%; S: ≤0.006%; P: ≤0.006%; Cr: ≤0.20%; Ni: ≤0.20%; Mo: ≤0.20%; Nb: ≤0.07%; N: ≤0.07%; Al: ≤0.025%; Cu: ≤0.10%; As: ≤0.006%; the balance is Fe.

[0074] After mixing the components of the raw materials for the coating evenly, add 42-44° Be"d potassium sodium water glass accounting for 18-25% of the mass con...

Embodiment 3

[0077] Take the drug skin, the components of the drug skin and their mass fractions are as follows: marble: 40%, fluorite: 22%, rutile: 6%, ferromolybdenum: 7.5%, metal chromium: 30%, silicon micropowder: 5%, silicon Iron: 4.4%, Ferro-Vanadium: 1.5%, Ferro-Niobium 0.6%, Nickel Powder: 2.3%, Soda Ash: 0.6%, CMC: 0.6%, Amorphous Graphite: 0.3%, Ferrochromium Nitride: 0.8%, Electrolytic Manganese: 2.2%, cobalt powder: 3.5%, ferroboron: 4.6%.

[0078] Take the welding core, the welding core is selected from H08A welding core with low content such as sulfur, phosphorus, arsenic and aluminum, and the chemical composition mass percentage is: C: ≤0.05%; Mn: 0.30-0.60%; Si: ≤0.15%; S: ≤0.006%; P: ≤0.006%; Cr: ≤0.20%; Ni: ≤0.20%; Mo: ≤0.20%; Nb: ≤0.07%; N: ≤0.07%; Al: ≤0.025%; Cu: ≤0.10%; As: ≤0.006%; the balance is Fe.

[0079] After mixing the components of the raw materials for the coating evenly, add 42-44° Be"d potassium sodium water glass accounting for 18-25% of the mass conten...

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Abstract

The invention discloses an ultra supercritical heat-resistant steel welding rod which is composed of an H08A core wire and coating wrapping the surface of the core wire, wherein contents of sulfur, phosphorus, arsenic, aluminum and the like in the H08A core wire are low, and the coating comprises components of 30%-39% of marbles, 22%-30% of fluorites, 6%-9% of rutiles, 7.5%-8.6% of ferromolybdenum, 29%-31% of chromium metal, 5%-9% of silica powder, 2%-5% of ferrosilicon, 1%-1.8% of ferrovanadium, 0.4%-0.8% of ferroniobium, 1.8%-2.8% of nickel powder, 0.4%-0.8% of sodium carbonate, 0.4%-0.8% of carboxyl methyl cellulose (CMC), 0.2%-0.6% of amorphous graphite, 0.6%-1.5% of nitrogen-bearing ferrochromium, 1.6%-3% of electrolytic manganese, 3%-3.8% of cobalt powder and 4%-5% of ferroboron.

Description

technical field [0001] The invention relates to an electrode, in particular to an ultra-supercritical heat-resistant steel electrode and a production method thereof. Background technique [0002] To improve thermal efficiency and reduce CO 2 To meet the requirements of environmental protection and energy conservation, all countries in the world are vigorously developing various energy-saving and environmental protection products such as ultra-supercritical boilers and circulating fluidized beds, and my country is no exception. In developed countries, power plant units are basically developing towards large capacity and high parameters. In order to reduce energy consumption and improve thermal efficiency, large-capacity and high-efficiency ultra-supercritical units have been produced and put into operation one after another; through continuous improvement and development, ultra-supercritical The availability, flexibility and operational reliability of the units have reached ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362B23K35/30B23K35/40
CPCB23K35/0266B23K35/3073B23K35/3601B23K35/3602B23K35/3605B23K35/404
Inventor 何秀陈维富黄义芳
Owner ATLANTIC CHINA WELDING CONSUMABLES
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