Preparation method of metal type flux-cored wire and stainless steel bearing ring

A technology of flux-cored welding wire and bearing rings, applied in metal processing equipment, welding equipment, welding equipment, etc., can solve problems such as fatigue cracks, achieve the effects of improving strength and toughness, good process performance, and improving material utilization

Active Publication Date: 2022-04-15
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a metal-type flux-cored welding wire, which solves the problem that the stainless bearing steel is prone to fatigue crack source in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The preparation method of stainless steel bearing ring, comprises the following steps:

[0031] Step 1. Weigh raw materials according to mass percentage: chromium powder 11-13%, nickel powder 4.5-5.5%, molybdenum powder 1.2-1.4%, vanadium iron powder 1.8-2.1%, niobium iron powder 1.8-2.2%, aluminum powder 1.1-1.3%, tungsten powder 2.4-2.6%, chromium nitride 3.6-4.5%, hafnium boride 0.08-0.12%, tantalum powder 0.05-0.065%, lanthanum oxide 0.48-0.52%, sodium fluoride 0.8-1%, The rest is iron powder, and the sum of the mass percentages of the above components is 100%;

[0032]Step 2. Mix the raw materials weighed in step 1, place them in a tube furnace, continuously feed argon gas, and keep warm at 200°C-300°C for 2h-3h to obtain the drug core powder;

[0033] Step 3. Place a stainless steel strip with a width of 7mm and a thickness of 0.3mm (the composition is shown in Table 1) on the strip feeding machine of the welding wire forming machine, and roll the stainless steel...

Embodiment 1

[0037] Step 1. Weigh 12% of chromium powder, 5% of nickel powder, 1.3% of molybdenum powder, 2.0% of vanadium iron powder, 2% of ferroniobium powder, 1.2% of aluminum powder, 2.4% of tungsten powder and 4% of chromium nitride according to mass percentage %, hafnium boride 0.1%, tantalum powder 0.05%, lanthanum oxide 0.5%, sodium fluoride 1%, the rest is iron powder, the sum of the mass percentages of the above components is 100%;

[0038] Step 2. Mix all the raw materials weighed in step 1 evenly and place them in a tube furnace. Under the condition of continuously feeding argon gas, keep the temperature at 200° C. for 2 hours to obtain the core powder;

[0039] Step 3. Place a stainless steel strip with a width of 7mm and a thickness of 0.3mm (the composition is shown in Table 1) on the strip feeding machine of the welding wire forming machine, and roll the stainless steel strip into a U-shaped groove through the pressing groove of the forming machine , the drug core powder i...

Embodiment 2

[0043] Step 1. Weigh 12% of chromium powder, 5% of nickel powder, 1.3% of molybdenum powder, 1.8% of vanadium-iron powder, 2% of niobium-iron powder, 1.2% of aluminum powder, 2.6% of tungsten powder and 4% of chromium nitride according to mass percentage. %, hafnium boride 0.1%, tantalum powder 0.065%, lanthanum oxide 0.5%, sodium fluoride 1%, the rest is iron powder, the sum of the mass percentages of the above components is 100%;

[0044] Step 2. Mix all the raw materials weighed in step 1 evenly, place them in a tube furnace, keep the temperature at 230° C. for 3 hours under the condition of continuously feeding argon gas, and obtain the drug core powder;

[0045] Step 3. Place a stainless steel strip with a width of 7mm and a thickness of 0.3mm (the composition is shown in Table 1) on the strip feeding machine of the welding wire forming machine, and roll the stainless steel strip into a U-shaped groove through the pressing groove of the forming machine , the drug core pow...

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PUM

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Abstract

The invention discloses a metal type flux-cored wire and a preparation method of a stainless steel bearing ring. A flux core of the welding wire comprises chromium powder, nickel powder, molybdenum powder, ferrovanadium powder, ferroniobium powder, aluminum powder, tungsten powder, chromium nitride, hafnium boride, tantalum powder, lanthanum oxide, sodium fluoride and the balance iron powder. The flux-cored wire has the advantages that the flux-cored wire is uniform in molten drop transition, the components and proportion of the flux can be adjusted, the required welding seam chemical components can be provided, the deposition speed of the flux-cored wire is high, and the production efficiency is high; and the obdurability, wear resistance, corrosion resistance and high-temperature stability of the high-carbon-chromium type stainless bearing steel can be improved, so that the high-carbon-chromium type stainless bearing steel has more excellent processing properties, and the requirements of practical engineering problems are met. According to the preparation method of the stainless steel bearing ring, CMT welding is used as a heat source, the metal type flux-cored wire is used as a raw material, the stainless steel bearing ring is manufactured through additive manufacturing, efficiency is high, the number of needed devices is small, and production cost is low.

Description

technical field [0001] The invention belongs to the technical field of metal materials, relates to a metal-type flux-cored welding wire, and also relates to a method for preparing a stainless steel bearing ring by using the above-mentioned metal-type flux-cored welding wire. Background technique [0002] Bearings are important components used to support the mechanical rotating body. While reducing the friction and wear of the rotating body during motion, it can ensure its rotation accuracy and are known as mechanical joints. The quality of components will directly affect the reliability and performance of the product. In the machinery industry, bearings, as an important basic product, occupy a very important position and role in various fields of my country's national economic construction. With the progress of society and the development of science and technology, all walks of life have higher and higher requirements for the variety, quantity and quality of bearings, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/02B23K35/40B23K9/04B23K9/133
CPCY02P10/25
Inventor 张敏刘智博郜雅彦李毅曹齐鲁
Owner XIAN UNIV OF TECH
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