Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pb-Sn-Sb-Ag alloy brazing filler metal and manufacturing method thereof

A pb-sn-sb-ag, alloy brazing filler metal technology, applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of inability to meet the use requirements, insufficient Cu wettability, etc., and achieve brazing manufacturability. Good, avoid excessive erosion, the effect of simple preparation method

Active Publication Date: 2015-07-01
BEIJING INST OF NONFERROUS METALS & RARE EARTH +1
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Pb-5Sn-10Sb (wt%) solder imported from Europe has a suitable melting temperature and good brazing processability, but its wettability to Cu is not enough to meet the use requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pb-Sn-Sb-Ag alloy brazing filler metal and manufacturing method thereof
  • Pb-Sn-Sb-Ag alloy brazing filler metal and manufacturing method thereof
  • Pb-Sn-Sb-Ag alloy brazing filler metal and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: prepare Pb-Sn-Sb-Ag alloy solder (one)

[0026] Step 1: Weighing the metal raw material

[0027] Weigh 158 grams of Sn, 0.1 grams of Ag, 78 grams of Sb and 763.9 grams of Pb respectively;

[0028] Step 2: Alloy Casting

[0029] Put the weighed Pb, Sn, Sb and Ag metal raw materials in a graphite crucible by using an intermediate frequency induction furnace, heat to 500°C for melting by using an intermediate frequency induction furnace, cool down to 350°C after the metal is melted, and keep it warm for 5 minutes. Carry out casting, make the Pb-Sn-Sb-Ag alloy ingot of diameter 30mm bar;

[0030] Step 3: Wire Preparation

[0031] The casted alloy rod-shaped ingot is extruded by an extruder to make a welding wire with a diameter of 1 mm.

Embodiment 2

[0032] Embodiment 2: prepare Pb-Sn-Sb-Ag alloy solder (two)

[0033] Step 1: Weighing the metal raw material

[0034] Weigh 159 grams of Sn, 0.5 grams of Ag, 76 grams of Sb and 764.5 grams of Pb respectively;

[0035] Step 2: Alloy Casting

[0036] Put the weighed Pb, Sn, Sb and Ag metal raw materials in a graphite crucible by using an intermediate frequency induction furnace, heat to 500°C for melting by using an intermediate frequency induction furnace, cool down to 350°C after the metal is melted, and keep it warm for 5 minutes. Carry out casting, make the Pb-Sn-Sb-Ag alloy ingot of thickness 5mm plate;

[0037] Step 3: Solder Foil Preparation

[0038] The alloy plate-shaped ingot after melting and casting is rolled by a rolling mill to make a welding foil with a thickness of 0.1 mm.

[0039] The obtained Pb-Sn-Sb-Ag alloy solder was used for brazing test, the base material was pure Cu sheet, brazing was completed on a heating platform, and the brazing temperature was 2...

Embodiment 3

[0040] Embodiment 3: prepare Pb-Sn-Sb-Ag alloy solder (three)

[0041] Step 1: Weighing the metal raw material

[0042] Weigh 160 grams of Sn, 10 grams of Ag, 75 grams of Sb and 755 grams of Pb respectively;

[0043] Step 2: Alloy Casting

[0044] Put the weighed Pb, Sn, Sb and Ag metal raw materials in a graphite crucible by using an intermediate frequency induction furnace, heat to 500°C for melting by using an intermediate frequency induction furnace, cool down to 350°C after the metal is melted, and keep it warm for 5 minutes. Carry out casting, make the Pb-Sn-Sb-Ag alloy ingot of diameter 30mm bar;

[0045] Step 3: Solder Powder Preparation

[0046] Using the gas atomization powder making method, using nitrogen as the atomizing gas, place the obtained rod-shaped ingot under the conditions of a pressure of 0.6MPa and a temperature of 350°C, and gas atomize it into an alloy powder. The alloy powder, Through sieving, the alloy solder powder with a particle size of 25um-4...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Pb-Sn-Sb-Ag alloy brazing filler metal is mainly used for soldering of metal coatings of an electronic device. The brazing filler metal comprises, by weight, 15.5-16.5wt % of Sn, 7.0-8.0wt% of Sb, 0.01-1.2wt% of Ag and the balance of Pb. The brazing filler metal is moderate in melting temperature, has excellent wettability for the metal coatings, and is good in brazing process and applicable to soldering of silver (alloy) coatings, gold coatings and copper of electronic devices, and thermal impact resistance of brazing seams is good.

Description

technical field [0001] The invention relates to a low-temperature brazing filler metal for aluminum and aluminum alloy, in particular to a Sn-Zn-Ag-Ni alloy brazing filler metal. Background technique [0002] In the electronics industry, the quality of solder products directly affects the soldering process, performance indicators and service life of electronic devices. For special-purpose electronic devices such as aerospace, it is required that the Pb content in the solder is greater than 3%, and it has good wettability to gold plating, silver (alloy) plating, and copper, and it is preferably eutectic solder. Especially for complex devices, there is a need for graded brazing, which requires graded solders with melting temperatures ranging from 100°C to 400°C. InPbAg, SnPb, SnPbAg, etc. in existing commercial solders can meet some requirements, but solders with a melting temperature of 200°C to 250°C are still blank. The Pb-5Sn-10Sb (wt%) solder imported from Europe has a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23K35/26B23K35/40
CPCB23K35/0227B23K35/0233B23K35/0244B23K35/268B23K35/40C22C11/06
Inventor 张国清原辉
Owner BEIJING INST OF NONFERROUS METALS & RARE EARTH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com