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Ultra-supercritical novel ferrite heat-resistant steel welding electrode

An ultra-supercritical and ferritic technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve problems such as poor arc stability, poor weld shape, narrow weld bead, etc.

Active Publication Date: 2013-04-03
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 parts are as follows: marble: 30%, fluorite: 25%, electrolytic manganese: 2.2%, ferrosilicon: 2.2%, silicon micropowder: 5%, nickel powder: 1.4% , Ferro-niobium: 0.5%, amorphous graphite: 0.4%, ferro-titanium: 5%, soda ash: 0.8%, CMC: 0.6%, ferro-vanadium: 1.3%, ferrochromium nitride: 1.2%, rutile 7%.

[0068] Get the welding core, the welding core selects H08Cr9WMo special welding core with low content such as sulfur, phosphorus, arsenic and tin, and the chemical composition mass percentage is: C: 0.04; Mn: 0.43; Si: 0.04; S: 0.005; P: 0.005; Cr: 9.85; Ni: 0.04; Mo: 0.61; W: 1.76; V: 0.007; Al: 0.005; Cu: 0.09; As: 0.005; 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 of the solid component to prepare a paste for the coating. Together with the welding core, use conv...

Embodiment 2

[0072] Take the drug skin, the components of the drug skin and their mass parts are as follows: marble: 33%, fluorite: 22%, electrolytic manganese: 2.1%, ferrosilicon: 2.2%, silicon micropowder: 6%, nickel powder: 1.5% , Ferro-niobium: 0.5%, amorphous graphite: 0.4%, ferro-titanium: 5%, soda ash: 0.8%, CMC: 0.6%, ferro-vanadium: 1.2%, ferrochromium nitride: 1.1%, rutile 6.8%.

[0073] Get the welding core, the welding core selects H08Cr9WMo special welding core with low content such as sulfur, phosphorus, arsenic and tin, and the chemical composition mass percentage is: C: 0.04; Mn: 0.43; Si: 0.04; S: 0.005; P: 0.005; Cr: 9.85; Ni: 0.04; Mo: 0.61; W: 1.76; V: 0.007; Al: 0.005; Cu: 0.09; As: 0.005; 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 content of the solid component to prepare a paste for the coating, together with the solder core selecte...

Embodiment 3

[0077] Take the drug skin, the components of the drug skin and their mass parts are as follows: marble: 32%, fluorite: 25%, electrolytic manganese: 2.0%, ferrosilicon: 2.2%, silicon micropowder: 5.5%, nickel powder: 1.5% , Ferro-niobium: 0.45%, amorphous graphite: 0.4%, ferro-titanium: 5%, soda ash: 0.8%, CMC: 0.6%, ferro-vanadium: 1.2%, ferrochromium nitride: 1.0%, rutile 6.5%.

[0078] Get the welding core, the welding core selects H08Cr9WMo special welding core with low content such as sulfur, phosphorus, arsenic and tin, and the chemical composition mass percentage is: C: 0.04; Mn: 0.43; Si: 0.04; S: 0.005; P: 0.005; Cr: 9.85; Ni: 0.04; Mo: 0.61; W: 1.76; V: 0.007; Al: 0.005; Cu: 0.09; As: 0.005; the balance is Fe.

[0079] After mixing the components of the coating raw material evenly, add 42-44° Be"d potassium sodium water glass accounting for 18-25% of the solid component mass content to prepare a paste for coating, together with the solder core selected above , Electr...

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Abstract

The invention discloses an ultra-supercritical novel ferrite heat-resistant steel welding electrode, consisting of an H08Cr9WMo special core wire and a coating, wherein the content of each of sulfur, phosphorous, arsenic, stannum and the like in the H08Cr9WMo special core wire is low; the coating is wrapped on the surface of the core wire; and the covering components and the mass contents thereof are as follows: 28-40% of marble, 18-28% of fluorite, 5-10% of rutile, 3-8% of ferrotitanium, 4-10% of silica powder, 2-5% of silicoferrite, 1-1.8% of ferrovanadium, 0.4-0.8% of ferrocolumbium, 1-1.8% of nickel powder, 0.4-0.8% of sodium carbonate, 0.4-0.8% of CMC (Carboxymethyl Cellulose), 0.2-0.6% of amorphous graphite powder, 0.6-1.5% of ferrochrome nitride and 1.5-3% of electrolytic manganese. The welding electrode provided by the invention is used for the welding of ultra-supercritical heat-resistant steel T / P92 in a matching way; and in the course of welding, the electric arc is stable, the splashing is little, the slag detachability is good, the all-position operability is good, the formed welding line is attractive and the welding line wettability is moderate.

Description

technical field [0001] The invention relates to an electrode, in particular to an ultra-supercritical novel ferritic heat-resistant steel electrode. Background technique [0002] In order to improve thermal efficiency, reduce CO2 emissions, and 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 a...

Claims

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Application Information

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IPC IPC(8): B23K35/34B23K35/365B23K35/40
Inventor 何秀曾志超兰志刚黄义芳
Owner ATLANTIC CHINA WELDING CONSUMABLES
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