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Non-chrome silver-based soldering flux and preparation method thereof

A solder, silver-based technology, applied in welding equipment, welding/cutting medium/material, welding medium, etc., can solve the problems of low strength and poor wettability of silver-free solder-free solder, and achieve spreading performance and plasticity. Good, reduce pollution, avoid the effect of harm to health

Inactive Publication Date: 2017-06-20
ANHUI HUAZHONG WELDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a silver-free solder and its preparation method, which solves the problems of low strength and poor wettability of the existing silver-free solder

Method used

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  • Non-chrome silver-based soldering flux and preparation method thereof
  • Non-chrome silver-based soldering flux and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A silver-free based solder, in weight percentage, comprises: Ag39, Zn29.5, Sn2.5, Ni1.3, In0.1, Co0.05, graphene 0.01, and the balance is Cu and inevitable impurities.

[0028] The preparation method of the silver-free base solder in the present embodiment includes the following steps:

[0029] (1) prepare the alloy of the raw material except Graphene according to the proportion, and the prepared alloy is pulverized to 100-150 mesh for subsequent use;

[0030] (2) Graphene was added to alcohol, treated with ultrasonic, ultrasonic power 150W, frequency 80kHz, time 2h;

[0031] (3) adding the ultrasonically treated graphene alcohol solution and alloy powder to a high-energy ball mill, 150 r / min, temperature 150 degrees, and grinding for 10 min;

[0032] (4) drying the ground graphene and alloy powder mixture;

[0033] (5) the mixture after drying is put into the grinding tool, extruded, the pressure is 80MPa, and the holding time is 15min;

[0034] (6) Sinter the forme...

Embodiment 2

[0036] A silver-free based solder, in weight percentage, comprises: Ag40, Zn30, Sn3, Ni1.5, In0.15, Co0.08, graphene 0.015, and the balance is Cu and inevitable impurities.

[0037] The preparation method of the silver-free base solder in the present embodiment includes the following steps:

[0038] (1) prepare the alloy of the raw material except Graphene according to the proportion, and the prepared alloy is pulverized to 100-150 mesh for subsequent use;

[0039] (2) adding graphene to alcohol, and ultrasonically treating it with ultrasonic power of 180W, frequency of 90kHz, and time of 2.5h;

[0040] (3) adding the ultrasonically treated graphene alcohol solution and alloy powder into a high-energy ball mill, 180 r / min, temperature 180 degrees, and grinding for 12 min;

[0041] (4) drying the ground graphene and alloy powder mixture;

[0042] (5) the mixture after drying is put into the grinding tool, extruded, the pressure is 85MPa, and the holding time is 18min;

[004...

Embodiment 3

[0045] A silver-free based solder, in terms of weight percentage, comprising: Ag41.0, Zn31.5, Sn3.5, Ni1.7, In0.2, Co0.1, graphene 0.02, and the remainder is Cu and unavoidable impurities.

[0046] The preparation method of the silver-free base solder in the present embodiment includes the following steps:

[0047] (1) prepare the alloy of the raw material except Graphene according to the proportion, and the prepared alloy is pulverized to 100-150 mesh for subsequent use;

[0048](2) Graphene is added to alcohol, and ultrasonic treatment is used, ultrasonic power is 200W, frequency is 100kHz, and time is 3h;

[0049] (3) adding the ultrasonically treated graphene alcohol solution and alloy powder into a high-energy ball mill, at 200 r / min, at a temperature of 200 degrees, and grinding for 15 min;

[0050] (4) drying the ground graphene and alloy powder mixture;

[0051] (5) the mixture after drying is put into the grinding tool, extruded, the pressure is 90MPa, and the hold...

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Abstract

The invention discloses non-chrome silver-based soldering flux and a preparation method thereof, and belongs to the field of soldering materials. The non-chrome silver-based soldering flux comprises, by weight, 39.0-41.0% of Ag, 29.5-31.5% of Zn, 2.5-3.5% of Sn, 1.3-1.7% of Ni, 0.1-0.2% of In, 0.05-0.1% of Co, 0.01-0.02% of graphene and the balance Cu and inevitable impurities. The soldering strength of the prepared soldering flux for stainless steel joints can reach 140 MPa, and the spreading performance and plasticity of the soldering flux are good.

Description

technical field [0001] The invention relates to a silver-free base solder and a preparation method thereof, belonging to the field of welding materials. Background technique [0002] Since the reform and opening up, with the vigorous development of industries such as electronic information industry, home appliances, automobiles, military industry, refrigeration and building decoration materials, brazing technology has played an important role in these emerging industries, and the demand for brazing materials is increasing. bigger. According to the alloy system, the solder can be divided into more than ten categories such as silver-based, copper-based, aluminum-based, tin-lead-based, gold-based, nickel-based, and manganese-based. Brazing is a very important type of welding material, and it is an indispensable and crucial connecting material in household appliances, generators, electrical appliances, glasses frame manufacturing, power tools and other industries. Silver solde...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/14B23K35/40
CPCB23K35/3006B23K35/0222B23K35/40
Inventor 刘东枭
Owner ANHUI HUAZHONG WELDING MATERIAL CO LTD
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