Nickelic and chrome welding permeating flux-cored wire and preparing method

A flux-cored welding wire and high-nickel technology, which is applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of low nickel content in high-chromium cast iron flux-cored welding wire, achieve small spatter, less production, The effect of less smoke

Active Publication Date: 2014-03-26
NINGBO LONGXING WELDING CUTTING TECH STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high-chromium cast iron flux-cored welding wire can be welded on high-chromium products under the condition of high chromium content, the nickel content in the high-chromium cast iron flux-cored welding wire is small, and the flux-cored welding wire cannot be welded on high-nickel products. for perfect welding

Method used

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  • Nickelic and chrome welding permeating flux-cored wire and preparing method
  • Nickelic and chrome welding permeating flux-cored wire and preparing method
  • Nickelic and chrome welding permeating flux-cored wire and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] First, weigh the powder according to the powder and parts by weight of the drug core powder in Example 1 in Table 2, then bake the ore powder at 745°C, and bake the metal powder and alloy powder at 115°C, keep warm for 5 hours and then cool naturally . The treated powders were screened twice through a 100-mesh sieve, fully mixed, and prepared into drug core powder.

[0044] It is 0.40 ± 0.001mm to select nominal thickness according to the composition and mass percentage of embodiment 1 cold-rolled steel strip in table 1, and the cold-rolled steel strip that nominal width is 900mm is rolled into U-shaped groove structure for the first time, and to U-shaped groove Add the above-mentioned prepared core powder accounting for 8% of the total weight of the flux-cored wire, use a forming machine to close the U-shaped groove with the core powder and flatten it, and roll the cold-rolled steel strip into a U-shaped groove structure again, and again Add the above-prepared flux co...

Embodiment 2

[0046] First, weigh the powder according to the powder and parts by weight of the drug core powder in Example 2 in Table 2, then bake the ore powder at 750°C, and bake the metal powder and alloy powder at 120°C, keep warm for 6 hours and then cool naturally . The processed powders were screened twice through a 120-mesh sieve, fully mixed, and prepared into drug core powder.

[0047] Then, according to the composition and the mass percentage of embodiment 2 cold-rolled steel strip in table 1, it is 0.40 ± 0.001mm to choose nominal thickness, and the cold-rolled steel strip that nominal width is 950mm is rolled into U-shaped groove structure for the first time, and to U Add the above-mentioned prepared core powder accounting for 10% of the total weight of the flux-cored wire into the U-shaped groove, use a forming machine to close the U-shaped groove with the core powder and flatten it, and then roll the cold-rolled steel strip into a U-shaped groove structure. And add the abov...

Embodiment 3

[0049] First, weigh the powder according to the powder and parts by weight of the drug core powder in Example 3 in Table 2, then bake the ore powder at 755°C, and bake the metal powder and alloy powder at 125°C, keep warm for 7 hours and then cool naturally . And the treated raw material granules are screened once through a 140-mesh sieve, fully mixed, and prepared into drug core powder.

[0050] Then, according to the composition and mass percentage of embodiment 3 cold-rolled steel strip in table 1, it is 0.40 ± 0.001mm to choose nominal thickness, and the cold-rolled steel strip that nominal width is 1000mm is rolled into U-shaped groove structure for the first time, and to U-shaped Add the above-mentioned prepared core powder accounting for 10% of the total weight of the flux-cored wire into the U-shaped groove, use a forming machine to close the U-shaped groove with the core powder and flatten it, and then roll the cold-rolled steel strip into a U-shaped groove structure....

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Abstract

The invention relates to a nickelic and chrome welding permeating flux-cored wire and a preparing method. The flux-cored wire comprises an outer shell, and the outer shell is internally provided with a through hole and an arc hole, wherein the through hole penetrates through the outer shell in the axial direction, and the arc hole is formed in the periphery of the through hole in a surrounding mode. The through hole and the arc hole are filled with the materials, by weight, 20-35 parts of metal powder, 35-65 parts of alloyed powder and 8-18 parts of mineral powder. The preparing method of the flux-cored wire comprises the steps that the powder is baked into the flux-cored powder, a cold-rolled steel strip is rolled two times into a U-shaped groove structure, the flux-cored powder accounting for 8%-10% of the total weight of the flux-cored wire is added into a U-shaped groove in twice, the U-shaped groove is sealed through a forming machine, the through hole and the arc hole penetrating through the cold-rolled steel strip are formed in the axial direction of the cold-rolled steel strip, the flux-cored powder is filled in the through hole and the arc hole, the cold-rolled steel strip is drawn through a drawbench in each welding pass, the diameter of the cold-rolled steel strip is reduced in each welding pass, and therefore the nickelic and chrome welding permeating flux-cored wire is obtained. The nickelic and chrome welding permeating flux-cored wire can be perfectly welded on nickelic and chrome products, and the fusion of the welding passes is very attractive.

Description

technical field [0001] The invention relates to a flux-cored welding wire and a preparation method thereof, in particular to a flux-cored welding wire with high nickel and chromium welding penetration and a preparation method thereof. Background technique [0002] Flux-cored welding wire is the fourth-generation most advanced welding material in the world. It is a high-tech product in the contemporary welding field. Automation, automation and intelligent welding, etc. Therefore, flux-cored wire is widely used in shipbuilding, construction, bridge, machinery manufacturing, metallurgy and mining industries. [0003] With the increase of high nickel and chromium products in the market, it is difficult for ordinary flux cored wire to achieve perfect welding on these products. Therefore, it is very necessary to develop a flux cored wire that can achieve welding on high nickel and chromium products. Regarding this kind of flux-cored welding wire, there have been reports in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40
CPCB23K35/368B23K35/406
Inventor 邬剑敏赵善军
Owner NINGBO LONGXING WELDING CUTTING TECH STOCK
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