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

Vacuum brazing solder, preparation method and application thereof

A brazing solder and vacuum technology, applied in the direction of welding equipment, welding/cutting medium/material, welding medium, etc., can solve problems such as weak welding and fracture of welded parts

Inactive Publication Date: 2016-08-24
曹惠兰
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing vacuum brazing solders have excellent effects when brazing the same material, but when brazing different materials, the welding is often weak and causes the welded parts to break

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The invention provides a kind of preparation method of vacuum brazing solder, and described preparation method comprises:

[0015] 1) The process of mixing nickel powder, water glass and water to prepare suspended solder;

[0016] 2) at 30-45 ° C, the process of mixing the suspended solder and sodium carboxymethyl cellulose to prepare vacuum brazing solder;

[0017] Wherein, relative to 100 parts by weight of nickel powder, the amount of water glass is 0.25-2.5 parts by weight, the amount of sodium carboxymethylcellulose is 0.9-3.8 parts by weight, and the amount of water is 12-26 parts by weight .

[0018] In the present invention, the nickel powder can be any commercially available nickel powder. In order to make the prepared vacuum brazing solder better weld the parts to be welded together firmly, preferably the nickel powder The particle size of the powder is 0.2-0.5mm.

[0019] Simultaneously, in the present invention, described water glass refers to pure compou...

Embodiment 1

[0029] 1) At 20°C, mix 100g of nickel powder, 1.5g of water glass and 18g of water for 40 minutes to prepare suspended solder;

[0030] 2) At 40° C., the above suspension solder and 2.5 g of sodium carboxymethylcellulose were mixed for 25 minutes to prepare vacuum brazing solder.

[0031] Wherein, the particle diameter of nickel powder is 0.3mm, the modulus of water glass is 2, and the degree of polymerization of sodium carboxymethyl cellulose is 500.

[0032] The vacuum brazing solder obtained above is coated on iron-chromium-aluminum and stainless steel, then the temperature is raised to 1070° C. for brazing, and then the temperature is lowered to 25° C. to obtain a brazed workpiece. The fracture strength of this brazed workpiece was 8.1 MPa.

Embodiment 2

[0034] 1) At 20°C, mix 100g of nickel powder, 0.25g of water glass and 12g of water for 30 minutes to prepare suspended solder;

[0035] 2) At 30° C., the above suspension solder and 0.9 g of sodium carboxymethyl cellulose were mixed for 20 minutes to prepare vacuum brazing solder.

[0036] Wherein, the particle diameter of nickel powder is 0.2mm, the modulus of water glass is 1, and the degree of polymerization of sodium carboxymethyl cellulose is 100.

[0037] The vacuum brazing solder obtained above is coated on iron-chromium-aluminum and stainless steel, then the temperature is raised to 1070° C. for brazing, and then the temperature is lowered to 25° C. to obtain a brazed workpiece. The fracture strength of this brazed workpiece was 7.8 MPa.

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
breaking strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a vacuum brazing solder as well as a preparation method and an application thereof. The preparation method comprises the following steps: (1) a procedure of mixing nickel powder, water glass and a water phase to prepare a suspended solder; and (2) a procedure of mixing the suspended solder with sodium carboxymethylcellulose at 30-45 DEG C to prepare the vacuum brazing solder. With respect to 100 parts of the nickel powder by weight, the use amount of the water glass is 0.25-2.5 parts by weight, the use amount of the sodium carboxymethylcellulose is 0.9-3.8 parts by weight and the use amount of the water is 12-26 parts by weight. The vacuum brazing solder can be used for firmly brazing two different materials; meanwhile, the preparation method of the vacuum brazing solder is simple and raw materials are easy to obtain.

Description

technical field [0001] The present invention relates, in particular, to a vacuum brazing solder, a preparation method and an application thereof. Background technique [0002] Vacuum brazing means that the workpiece is heated in a vacuum chamber, and it is mainly used for welding of high-quality products and easily oxidized materials. There are many materials suitable for vacuum brazing, such as: aluminum, aluminum alloy, copper, copper alloy, stainless steel, alloy steel, low carbon steel, titanium, nickel, Inconei, etc. can all be brazed in a vacuum electric furnace. [0003] The existing vacuum brazing filler metals have excellent effects when brazing the same material, but when brazing different materials, the welding is not firm enough to cause the welded parts to break. Contents of the invention [0004] The object of the present invention is to provide a vacuum brazing solder, which can firmly braze two different materials together, and at the same time, the prepar...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3033B23K35/40
Inventor 曹惠兰
Owner 曹惠兰
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