Fe-Cr-Mn welding wire as well as preparation method and welding process thereof

A technology of fe-cr-mn and welding wire, applied in welding equipment, manufacturing tools, welding media, etc., can solve the problem of high cost and achieve the effect of reducing welding cost

Active Publication Date: 2022-05-17
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although the high-temperature performance of the weld obtained by using this

Method used

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  • Fe-Cr-Mn welding wire as well as preparation method and welding process thereof
  • Fe-Cr-Mn welding wire as well as preparation method and welding process thereof
  • Fe-Cr-Mn welding wire as well as preparation method and welding process thereof

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preparation example Construction

[0066] On the other hand, the preparation method of the Fe-Cr-Mn welding wire provided in this embodiment is used to prepare the above-mentioned Fe-Cr-Mn welding wire, comprising the following steps:

[0067] Weighing powder: by mass percentage: Cr powder 45.0-48.0%, Ni powder 12.0-14.0%, Mn powder 25.0-28.0%, Ti powder 1.4-1.8%, Al powder 0.6-1.0%, V powder 4.0-5.0%, Graphene 0.3-0.6%, the rest is Fe powder, wherein, the sum of the mass percentages of all the above ingredients is 100%, to weigh the powder;

[0068] Drying the powder: heat the powder in a vacuum environment (for example, a vacuum heating furnace) to remove crystal water in the powder. The heating temperature range is 200-240°C, and the holding time range is 2-4h;

[0069] Mixing powder: fully mix the dried powder, the mixing time range is: 1-3h; specifically, the dried powder can be mixed in a powder mixer;

[0070] Coating powder: remove the grease on the surface of the welding skin, and then wrap the mixed ...

Embodiment 1

[0095] Step 1, weigh the powder: weigh the powder according to mass percentage, wherein, Cr powder 45.0%, Ni powder 12.0%, Mn powder 25.0%, Ti powder 1.4%, Al powder 0.6%, V powder 4.0%, graphene 0.3% %, the rest is Fe powder, and the sum of the mass percentages of the above components is 100%;

[0096] Step 2, drying the medicinal powder: put the medicinal powder weighed in step 1 into a vacuum heating furnace for heating at a heating temperature of 200°C and a holding time of 2 hours to remove the crystal water in the medicinal powder;

[0097] Step 3, mixing the powder: place the dried powder in a powder mixer for full mixing, and the mixing time is 1 hour;

[0098] Step 4, wrapping the powder: use alcohol to remove the grease on the surface of the 304 (06Cr19Ni10) stainless steel strip, and wrap the powder prepared in step 3 in the steel strip through the flux-cored wire drawing equipment;

[0099] Step 5, welding wire drawing: use drawing process to make welding wire, wh...

Embodiment 2

[0104] Step 1, weighing the powder: weigh the powder according to mass percentage, wherein, Cr powder 48.0%, Ni powder 14.0%, Mn powder 28.0%, Ti powder 1.8%, Al powder 1.0%, V powder 5.0%, graphene 0.6% %, the rest is Fe powder, and the sum of the mass percentages of the above components is 100%;

[0105] Step 2, drying the medicinal powder: put the medicinal powder weighed in step 1 into a vacuum heating furnace for heating at a heating temperature of 240°C and a holding time of 4 hours to remove the crystal water in the medicinal powder;

[0106] Step 3, mixing the powder: place the dried powder in a powder mixer for full mixing, and the mixing time is 3 hours;

[0107] Step 4, wrapping the powder: use alcohol to remove the grease on the surface of the 304 (06Cr19Ni10) stainless steel strip, and wrap the powder prepared in step 3 in the steel strip through the flux-cored wire drawing equipment;

[0108] Step 5, welding wire drawing: use drawing process to make welding wire...

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Abstract

The invention relates to the technical field of alloy welding, in particular to a Fe-Cr-Mn welding wire and a preparation method and a welding process thereof, the Fe-Cr-Mn welding wire is applied to welding of 800H steel, the welding wire comprises a welding skin and powder wrapped in the welding skin, and the powder comprises, by mass, 45.0%-48.0% of Cr powder, 12.0%-14.0% of Ni powder, 25.0%-28.0% of Mn powder, 1.4%-1.8% of Ti powder, 0.6%-1.0% of Al powder, 4.0%-5.0% of V powder, 0.3%-0.6% of graphene and the balance Fe powder; wherein the sum of the mass percentages of the components is 100%. In the powder components of the Fe-Cr-Mn welding wire, both Mn and Ni have the function of stabilizing an austenite phase region, the price of Mn is lower than that of Ni, Mn has the capacity of inhibiting austenite weld joint cracking and is beneficial to deoxidation of cladding metal during welding, so that the generation of pore defects is reduced, the content of Ni is reduced, the content of Cr and Mn is increased, and the welding quality of the Fe-Cr-Mn welding wire is improved. And the production cost of the welding wire is effectively reduced on the premise of ensuring the use performance of the welding wire.

Description

technical field [0001] The invention relates to the technical field of alloy welding, in particular to an Fe-Cr-Mn welding wire, a preparation method and a welding process thereof. Background technique [0002] Superalloys refer to a class of high-temperature metal materials based on Fe, Ni, Co, etc. The iron-based alloy is based on the Fe-Ni-Cr ternary system, the nickel-based alloy is based on the Ni-Cr binary system, and the cobalt-based alloy is based on the Co-Ni-Cr ternary system. Iron-based superalloys are cheap, and have good medium-temperature mechanical properties and thermal processing properties, and are widely used in aerospace, petrochemical, energy and power industries. Iron-based superalloys generally add more than 25% Ni to stabilize the austenite structure, and add more than 15% Cr to ensure that the alloy has excellent oxidation resistance and corrosion resistance. However, at present, when welding iron-based superalloys, high-matching nickel-based weldi...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3086B23K35/40Y02E30/30
Inventor 李勇杨二娟王艳松米紫昊刘福广杨兰王博韩天鹏刘刚张周博
Owner XIAN THERMAL POWER RES INST CO LTD
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