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Welding wire for welding fv520b martensitic stainless steel and preparation method thereof

A martensitic stainless steel, FV520B technology, applied in welding equipment, welding/welding/cutting items, welding media, etc., can solve the problem of high cost and achieve the effect of good filling rate, good fluidity and stable performance

Inactive Publication Date: 2016-06-01
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Imported welding consumables mainly include special solid wire and special welding rod, and the cost is relatively high

Method used

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  • Welding wire for welding fv520b martensitic stainless steel and preparation method thereof
  • Welding wire for welding fv520b martensitic stainless steel and preparation method thereof
  • Welding wire for welding fv520b martensitic stainless steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Step 1, take by mass percentage respectively 30% rutile, 6% zircon sand, 2% quartz, 6% feldspar, 4% sodium carbonate (Na 2 CO 3 ), 3% aluminum oxide (Al 2 o 3 ), 6% aluminum-magnesium alloy (Al-Mg), 5% electrolytic manganese metal (Mn), 20% chromium powder (Cr), 10% nickel powder (Ni), 4% ferroniobium (Nb- Fe), 4% molybdenum powder (Mo), the sum of the mass percentages of each component is 100%;

[0055] Step 2, dry-mix rutile, zircon sand, quartz, feldspar, sodium carbonate and aluminum oxide in a powder mixer for 0.5h, then put them into a spray granulator, and use water as a binder for granulation Granules, the particle size is controlled at 2-3mm;

[0056] Step 3, sintering the granules obtained in step 2 at 700°C for 0.8h, and then crushing them, and screening out the medicinal powder with a particle size of 60-100 mesh;

[0057] Step 4, uniformly mixing the medicinal powder obtained in step 3 with aluminum-magnesium alloy, electrolytic metal manganese, chromi...

Embodiment 2

[0067] Step 1, take by weight respectively 25% rutile, 5% zircon sand, 2% quartz, 7% feldspar, 5% sodium carbonate (Na 2 CO 3 ), 3% aluminum oxide (Al 2 o 3 ), 7% aluminum-magnesium alloy (Al-Mg), 6% electrolytic metal manganese (Mn), 25% chromium powder (Cr), 6% nickel powder (Ni), 4% ferroniobium (Nb- Fe), 5% molybdenum powder (Mo), the sum of the mass percentages of each component is 100%;

[0068] Step 2, dry-mix rutile, zircon sand, quartz, feldspar, sodium carbonate and aluminum oxide in a powder mixer for 0.6h, then put them into a spray granulator, and use water as a binder for granulation Granules, the average particle size of the particles is controlled at 2-3mm;

[0069] Step 3, sintering the granules obtained in step 2 for 0.7 hours at 720° C. and then crushing, and screening out the powder with a particle size of 60 to 100 mesh;

[0070] Step 4, uniformly mixing the medicinal powder obtained in step 3 with aluminum-magnesium alloy, electrolytic metal manganese,...

Embodiment 3

[0080] Step 1, take by weight respectively 28% rutile, 7% zircon sand, 4% quartz, 10% feldspar, 2% sodium carbonate (Na 2 CO 3 ), 2% aluminum oxide (Al 2 o 3 ), 10% aluminum-magnesium alloy (Al-Mg), 5% electrolytic metal manganese (Mn), 18% chromium powder (Cr), 7% nickel powder (Ni), 3% ferroniobium (Nb- Fe), 4% molybdenum powder (Mo), the sum of the mass percentages of each component is 100%;

[0081] Step 2, dry-mix rutile, zircon sand, quartz, feldspar, sodium carbonate and aluminum oxide in a powder mixer for 0.7h, then put them into a spray granulator, and use water as a binder for granulation Granules, the average particle size of the particles is controlled at 2-3mm;

[0082] Step 3, sintering the granules obtained in step 2 for 0.5 h at 750° C. and then breaking them, and screening out the powder with a particle size of 60 to 100 mesh;

[0083] Step 4, uniformly mixing the medicinal powder obtained in step 3 with aluminum-magnesium alloy, electrolytic metal manga...

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Abstract

A welding wire for welding FV520B martensitic stainless steel comprises a powder core and an outer skin. The powder core is composed of, by mass, 15 percent to 35 percent of rutile, five percent to 15 percent of zircon sand, two percent to five percent of quartz, four percent to 10 percent of feldspar, two percent to five percent of sodium carbonate, two percent to five percent of aluminum oxide, six percent to 12 percent of aluminum magnesium alloy, five percent to 10 percent of electrolytic manganese metal, 18 percent to 25 percent of chromium powder, six percent to 10 percent of nickel powder, two percent to six percent of ferroniobium and one percent to 10 percent of molybdenum powder, and the sum of the mass percent of all the components is 100 percent. The welding wire is good in arcing and arc stabilizing performance, good in molten pool fluidity, fine in splashed particle and even in postwelding slag coverage, and enables deslagging to be easy, welding joint forming is meticulous and attractive, the welding wire is suitable for large linear energy welding, the organization and performance obtained through the prewelding preheating and postwelding heat treatment process can meet actual production needs, and the welding requirement for FV520B martensitic stainless steel is met.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a welding wire for welding FV520B martensitic stainless steel, and also relates to a preparation method of the welding wire. Background technique [0002] FV520B is a low-carbon martensitic precipitation-hardening stainless steel, which has excellent corrosion resistance and weldability similar to ordinary austenitic stainless steel. It also has good impact toughness and ideal transverse properties on larger sections. It is widely used Used in gears, bolts, shafts, discs, blades, rotors, pump parts, etc. [0003] At present, the relevant welding consumables of FV520B mainly rely on imports, and there is no special welding consumables for it in China, and ER630 welding wire or E410NiMo-16 welding rod of the same quality as the base metal is mainly used. Imported welding consumables mainly include special solid wire and special welding rod, and the cost is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/0266B23K35/3608B23K35/368B23K35/406B23K2103/04
Inventor 张敏刘明志李继红
Owner XIAN UNIV OF TECH
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