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Nickel-based brazing filler metal ring and preparation method thereof

A technology of nickel-based brazing filler metal, which is applied in the direction of manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problems of high brittleness, hard nickel-based brazing filler metal ring, easy to break and fall off, and achieve large fineness , Combining the effects of increased strength and excellent elasticity

Active Publication Date: 2022-02-22
CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventionally pressed nickel-based solder rings are hard and brittle, and are easy to break and fall off during transportation or use

Method used

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  • Nickel-based brazing filler metal ring and preparation method thereof
  • Nickel-based brazing filler metal ring and preparation method thereof
  • Nickel-based brazing filler metal ring and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0043] see figure 2 , further, the preparation method provided by the invention comprises the following steps:

[0044] S10: Obtain toughening fiber 1, nickel-based solder and lead-free glass powder 2 in parts by mass;

[0045] S20: Dissolving the toughening fiber 1 in acetone, ultrasonically dispersing for 10-15 minutes; adding epoxy resin, nickel-based solder and lead-free glass powder 2, and stirring evenly to obtain a slurry;

[0046] S30: Obtain the steel rod 3, coat the surface of the steel rod with dimethyl silicone oil, uniformly press-coat the slurry on the surface of the steel rod, dry, sinter, strip, and cut to obtain the nickel-based solder ring 4.

[0047] Wherein, the drying temperature is 100-120° C., and the drying time is 1-1.5 hours; the sintering temperature is 650-700° C., and the sintering time is 1.5-2 hours.

[0048] In the embodiment of the present invention, the dough-like slurry is press-coated on the surface of the steel bar, and then dried, sinte...

Embodiment 1

[0050] This embodiment provides a nickel-based solder ring, which includes the following components in parts by mass: 0.5 parts by mass of toughening fiber; 10 parts by mass of lead-free glass powder; and 89.5 parts by mass of nickel-based solder.

[0051] Wherein, the toughening fiber is carbon fiber, and the length of the toughening fiber is 2mm-3mm.

[0052] Lead-free glass powder is B 2 o 3 -SnO-ZnO, the particle size of the glass powder is 300-500 mesh.

[0053] The nickel-based solder is BNi-1, and the particle size of the nickel-based solder is 200 mesh to 300 mesh.

[0054] This embodiment also provides a method for preparing the above-mentioned nickel-based solder ring, comprising the following steps:

[0055] S10: Obtain toughening fiber, lead-free glass powder and nickel-based solder according to parts by mass;

[0056] S20: Dissolving the toughening fiber in acetone, and ultrasonically dispersing it for 10 minutes; adding epoxy resin, lead-free glass powder and...

Embodiment 2

[0060] This embodiment provides a nickel-based solder ring, which includes the following components in parts by mass: 2 parts by mass of toughening fiber; 16 parts by mass of lead-free glass powder; and 82 parts by mass of nickel-based solder.

[0061] Wherein, the toughening fiber is polyester fiber, and the length of the toughening fiber is 2mm-3mm.

[0062] Lead-free glass powder is B 2 o 3 -SnO-ZnO and B 2 o 3 -BaO-ZnO, the particle size of the glass powder is 300-500 mesh.

[0063] The nickel-based solder is BNi-1 and BNi-2, and the particle size of the nickel-based solder is 200 mesh to 300 mesh.

[0064] This embodiment also provides a method for preparing the above-mentioned nickel-based solder ring, comprising the following steps:

[0065] S10: Obtain toughening fiber, lead-free glass powder and nickel-based solder according to parts by mass;

[0066] S20: Dissolving the toughening fiber in acetone, ultrasonically dispersing for 12 minutes; adding epoxy resin, l...

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Abstract

The invention provides a nickel-based brazing filler metal ring and a preparation method thereof, and the nickel-based brazing filler metal ring comprises the following components in parts by mass: 0.5 to 2 parts of toughening fiber; 10 to 20 parts of lead-free glass powder; and 78 parts to 89.5 parts of nickel-based brazing filler metal. The nickel-based brazing filler metal ring provided by the invention is high in bonding strength, and is not easy to break during assembly and transportation.

Description

technical field [0001] The invention relates to the technical field of brazing, in particular to a nickel-based solder ring and a preparation method thereof. Background technique [0002] Stainless steel has good high temperature performance and corrosion resistance, and is widely used in the manufacture of stainless steel heat exchanger piping. Brazing is a key link in the manufacture of stainless steel heat exchanger piping, which determines the service life of the heat exchanger. Due to the higher requirements for high temperature performance, nickel-based brazing filler metals are generally used to braze stainless steel pipelines. [0003] For automatic welding, nickel-based filler metals pressed into rings are the best choice for brazing stainless steel piping. However, conventionally pressed nickel-based solder rings are hard and brittle, and are easy to break and fall off during transportation or use. Contents of the invention [0004] In view of the above proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/36B23K35/40
CPCB23K35/3033B23K35/3053B23K35/3606B23K35/365B23K35/0227B23K35/404
Inventor 纠永涛黄俊兰王琴周许升李文彬张冠星聂孟杰郭艳红薛行雁
Owner CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIP CO LTD