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Fe-cr-mn welding wire and its preparation method and welding process

A technology of fe-cr-mn and welding process, which is applied in the direction of 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: 2022-07-05
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high-temperature performance of the weld obtained by using this nickel-based welding wire is excellent, the resulting cost is relatively high

Method used

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  • Fe-cr-mn welding wire and its preparation method and welding process
  • Fe-cr-mn welding wire and its preparation method and welding process
  • Fe-cr-mn welding wire and its preparation method and welding process

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preparation example Construction

[0066] On the other hand, the preparation method of Fe-Cr-Mn welding wire provided by this embodiment is used for preparing the above-mentioned Fe-Cr-Mn welding wire, and includes 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 are Fe powder, wherein, the sum of the mass percentages of all the above components is 100%, to take the medicinal powder;

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

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

Embodiment 1

[0095] Step 1, weigh the medicinal powder: respectively weigh the medicinal powder by 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 are Fe powder, and the sum of the mass percentages of the above components is 100%;

[0096] Step 2, drying the medicinal powder: place the medicinal powder weighed in step 1 and heat it in a vacuum heating furnace, the heating temperature is 200°C, and the holding time is 2 h, and the crystal water in the medicinal powder is removed;

[0097] Step 3, mixing medicinal powder: the dried medicinal powder is placed in a powder mixer for sufficient mixing, and the mixing time is 1h;

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

[0099] Ste...

Embodiment 2

[0104] Step 1, weigh the medicinal powder: respectively weigh the medicinal powder by 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 are Fe powder, and the sum of the mass percentages of the above components is 100%;

[0105] Step 2, drying the medicinal powder: the medicinal powder weighed in step 1 is placed in a vacuum heating furnace for heating, the heating temperature is 240 ° C, and the holding time is 4 h, and the crystal water in the medicinal powder is removed;

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

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

[0108]...

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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 welding process thereof, which are applied to the welding of 800H steel. The welding wire includes a welding skin and a powder wrapped in the welding skin. Including components: 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 %, and the rest are Fe powder; wherein, the sum of the mass percentages of the above components is 100%. In the powder composition of the Fe-Cr-Mn welding wire, both Mn and Ni have the effect of stabilizing the austenite phase region, and the price of Mn is cheaper than that of Ni. Mn not only has the ability to inhibit the cracking of the austenite weld, but also helps Deoxidation of the cladding metal during welding, thereby reducing the generation of porosity defects, by reducing the content of Ni and increasing the content of Cr and Mn, the production cost of the welding wire is effectively reduced on the premise of ensuring the performance of the welding wire.

Description

technical field [0001] The invention relates to the technical field of alloy welding, in particular to a Fe-Cr-Mn welding wire and a preparation method and welding process thereof. Background technique [0002] Superalloy refers to a class of high-temperature metal materials with Fe, Ni, Co, etc. as the matrix. Iron-based alloys are based on Fe-Ni-Cr ternary system, nickel-based alloys are based on Ni-Cr binary system, and cobalt-based alloys are based on Co-Ni-Cr ternary system. Iron-based superalloys are cheap, have good mechanical properties at medium temperature and hot working 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 at the same time add more than 15% Cr to ensure that the alloy has excellent anti-oxidation and corrosion resistance. However, at present, when welding iron-based superalloys, high-matching nickel-based welding m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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