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Brazing material for Mn-Cu alloy and Fe-Cr-based alloy brazing and preparation method thereof

A technology based on alloys and fe-cr, which is applied in welding equipment, metal processing equipment, welding/cutting media/materials, etc., can solve the problems of difficult brazing of Mn-Cu alloys and Fe-Cr-based alloys, and achieve joint strength The effect of large, reasonable proportion and good processing performance

Active Publication Date: 2019-01-04
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned prior art, the present invention provides a brazing filler metal for Mn-Cu alloy and Fe-Cr base alloy brazing, to solve the technical problem of difficult brazing of Mn-Cu alloy and Fe-Cr base alloy

Method used

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  • Brazing material for Mn-Cu alloy and Fe-Cr-based alloy brazing and preparation method thereof
  • Brazing material for Mn-Cu alloy and Fe-Cr-based alloy brazing and preparation method thereof
  • Brazing material for Mn-Cu alloy and Fe-Cr-based alloy brazing and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A brazing filler metal for brazing Mn-Cu alloy and Fe-Cr-based alloy includes the following components by mass percentage: 55% copper, 34% manganese, 6% nickel, and 5% tin. The solder is made by the following method:

[0029] S1: Put the formula amount of nickel, copper, manganese and tin in a high-frequency furnace, and control the temperature of the high-frequency furnace to 1450℃. After the metal is completely melted, it will be kept for 2.5h, and then cooled to 1110℃ for pouring. Cool to room temperature to get an ingot;

[0030] S2: Place the ingot in a muffle furnace and heat it to 720°C for 8-10 hours, then place the ingot in running tap water and quench to room temperature;

[0031] S3: Turn the quenched ingot, remove the hardened and oxide layer on the surface, and turn the thickness of 2mm; then use wire cutting to cut the ingot into thin slices with a thickness of 0.4mm, and use a series of different grit sandpaper to grind off the wire Cut the traces to a thickne...

Embodiment 2

[0033] A brazing filler metal for brazing Mn-Cu alloy and Fe-Cr-based alloy includes the following components by mass percentage: 55% copper, 32% manganese, 5% nickel, and 8% tin. The solder is made by the following method:

[0034] S1: Put the formula amount of nickel, copper, manganese and tin in a high-frequency furnace, and control the temperature of the high-frequency furnace to 1400℃. After the metal is completely melted, it will be kept for 3h, and then the temperature will be reduced to 1150℃ for pouring. After pouring, it will cool naturally To room temperature, get an ingot;

[0035] S2: Place the ingot in a muffle furnace and heat it to 750°C for 8 hours, then place the ingot in running tap water and quench to room temperature;

[0036] S3: Turn the quenched ingot, remove the hardened and oxide layer on the surface, and turn the thickness of 3mm; then use wire cutting to cut the ingot into thin slices with a thickness of 0.4mm, and use a series of different grit sandpaper...

Embodiment 3

[0038] A brazing filler metal for brazing Mn-Cu alloy and Fe-Cr-based alloy includes the following components by mass percentage: 50% copper, 35% manganese, 5% nickel, and 10% tin. The solder is made by the following method:

[0039] S1: Put the formula amount of nickel, copper, manganese and tin in a high-frequency furnace, control the temperature of the high-frequency furnace to 1460℃, keep the temperature for 2h after the metal is completely melted, then cool to 1050℃ for pouring, and cool naturally after pouring To room temperature, get an ingot;

[0040] S2: Place the ingot in a muffle furnace and heat it to 700°C for 10 hours, then place the ingot in running tap water and quench to room temperature;

[0041] S3: Turn the quenched ingot, remove the hardened and oxide layer on the surface, and turn the thickness of 3mm; then use wire cutting to cut the ingot into thin slices with a thickness of 0.4mm, and use a series of different grit sandpaper to grind off the wire Cut the tr...

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Abstract

The invention discloses a brazing material for Mn-Cu alloy and Fe-Cr-based alloy brazing and a preparation method thereof. The brazing material comprises, by mass, 54-60% of copper, 30-35% of manganese, 5-10% of nickel and 5-10% of stannum. The preparation method of the brazing material comprises the steps of putting nickel, copper, manganese and stannum into a high-frequency furnace at a formularatio, heating and melting metal, conducting heat preservation for 2-3 h and then conducting pouring to obtain a casting ingot; heating the casting ingot cooled to the indoor temperature to 700-750 DEG C, conducting heat preservation for 8-10 h, and then putting the casting ingot in flowing cooling liquid to be quenched to the indoor temperature; and finally, removing a hardened and oxidized layeron the surface of the casting ingot, cutting the casting ingot into sheets, putting the sheets in absolute ethyl alcohol to conduct ultrasonic cleaning, and fishing out and draining off the sheets toobtain the finished brazing material. Through the brazing material provided by the invention, the technical problem that Mn-Cu alloy and Fe-Cr-based alloy brazing is difficult can be effectively solved.

Description

Technical field [0001] The invention belongs to the technical field of brazing materials, and specifically relates to a brazing filler metal for brazing Mn-Cu alloy and Fe-Cr-based alloy and a preparation method thereof. Background technique [0002] In the fields of military equipment, precision instruments, automobiles and vehicles, the demand for vibration and noise reduction is becoming more and more urgent, and the most direct way to reduce vibration and noise is to improve the damping characteristics of the material itself. Because of their high damping and excellent mechanical properties, Mn-Cu alloys and Fe-Cr-based alloys are widely used in components that require vibration and noise reduction. Both have their own characteristics. Due to the damping mechanism, the damping performance of Mn-Cu alloy increases with increasing stress, but it has high damping characteristics only when it is below 100°C; Fe-Cr based The alloy still has high damping performance under service ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/302B23K35/40
Inventor 胥永刚张明月张松杨静李国超
Owner SOUTHWEST JIAOTONG UNIV
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