Flaky composite brazing filler metal, preparation method and application thereof and method for welding blades by adopting flaky composite brazing filler metal

A composite solder and flake technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of product processing stability and quality impact, poor consistency of blade cladding volume, and affect welding cladding quality and other problems, to achieve the effect of high consistency in size and shape, improved quality, and consistent composition

Active Publication Date: 2019-10-01
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the cladding material of the wear-resistant layer adjacent to the blade damping table in China is a mixture of tungsten carbide particles and titanium-based solder. The mixed powder is made into a paste, and then the operator uses both hands to apply the paste cladding material on the adjacent surface of the blade damping table according to the specified range. After the paste coating is dried, the blade is welded and clad. The above operation All are manually operated by the operator, the coating amount of each blade is controlled manually, the shape of the kneading is inconsistent, the consistency of the cladding amount of each blade is poor, and the loss is large, which affects the stability and quality of product processing; And manual operation has certain pollution to the cladding material, which affects the quality of welding cladding

Method used

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  • Flaky composite brazing filler metal, preparation method and application thereof and method for welding blades by adopting flaky composite brazing filler metal
  • Flaky composite brazing filler metal, preparation method and application thereof and method for welding blades by adopting flaky composite brazing filler metal
  • Flaky composite brazing filler metal, preparation method and application thereof and method for welding blades by adopting flaky composite brazing filler metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of sheet-like composite brazing filler metal, specifically comprising the following steps:

[0041] 1. Material preparation

[0042] 1) Preparation of tungsten carbide: prepare powdered cast tungsten carbide, and dry it for 1 hour at a temperature of 60°C in a vacuum drying box under a vacuum of 6Pa atmosphere;

[0043] 2) Preparation of brazing filler metal: B-Ti57CuZrNi-S powder with a melting temperature of 910-920 ℃ is used as the brazing filler metal, and it is dried in a vacuum drying box at a vacuum degree of 6Pa for 1 hour at a temperature of 60 ℃;

[0044] 3) Preparation of adhesive: use a mixture of xylene, acetone and butyl acetate to dilute polybutyl methacrylate to dissolve polybutyl methacrylate to make a special adhesive.

[0045] Calculated by mass percentage, xylene accounts for 40%, acetone accounts for 30%, and butyl acetate accounts for 30%.

[0046] 2. Material mixing:

[0047] Calculated according to the mass percentage, fir...

Embodiment 2

[0053] A preparation method of sheet-like composite brazing filler metal, specifically comprising the following steps:

[0054] 1. Material preparation

[0055]1) Preparation of tungsten carbide: prepare powdered cast tungsten carbide, and dry it in a vacuum drying box at a vacuum of 6Pa at a temperature of 60°C for 1 hour;

[0056] 2) Preparation of brazing filler metal: B-Ti57CuZrNi-S powder is used for brazing filler metal, which is dried for 1 hour at a temperature of 60°C in a vacuum drying box under a vacuum of 6Pa atmosphere;

[0057] 3) Preparation of adhesive: use a mixture of xylene, acetone and butyl acetate to dilute polybutyl methacrylate to dissolve polybutyl methacrylate to make a special adhesive.

[0058] Calculated by mass percentage, xylene accounts for 40%, acetone accounts for 30%, and butyl acetate accounts for 30%.

[0059] 2. Material mixing:

[0060] Calculated according to the mass percentage, first take 50% tungsten carbide and 50% solder into the...

Embodiment 3

[0066] like figure 1 As shown, a preparation method of sheet-like composite brazing filler metal specifically includes the following steps:

[0067] 1. Material preparation

[0068] 1) Preparation of tungsten carbide: prepare powdered cast tungsten carbide, and dry it for 1 hour at a temperature of 60°C in a vacuum drying box under a vacuum of 6Pa atmosphere;

[0069] 2) Preparation of brazing filler metal: B-Ti57CuZrNi-S powder is used for brazing filler metal, which is dried for 1 hour at a temperature of 60°C in a vacuum drying box under a vacuum of 6Pa atmosphere;

[0070] 3) Preparation of adhesive: use a mixture of xylene, acetone and butyl acetate to dilute polybutyl methacrylate to dissolve polybutyl methacrylate to make a special adhesive.

[0071] Calculated by mass percentage, xylene accounts for 40%, acetone accounts for 30%, and butyl acetate accounts for 30%.

[0072] 2. Material mixing:

[0073] Calculated according to the mass percentage, first take 55% tun...

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Abstract

The invention discloses a flaky composite brazing filler metal, a preparation method and application thereof and a method for welding blades by adopting the flaky composite brazing filler metal. The flaky composite brazing filler metal with certain strength is prepared by stirring tungsten carbide, a brazing filler metal and an adhesive into mixed powder according to a specified proportion, pressing into sheets, and then stably solidifying; the flaky composite brazing filler metal is consistent in specification and size, the cladding amount on each blade can be guaranteed to be consistent, sothat the stability and quality of product processing are greatly improved; and as a solid flaky body, flaky composite brazing filler metal sheets are available on demand, with no need of deploying a pasty composite brazing filler metal on site, the working efficiency of preparation before welding the blades can be greatly improved. The flaky composite brazing filler metal sheets are melted throughthe cooperation of automatic equipment, so that the welding cladding quality is influenced by pollution caused by manual operation on cladding materials is avoided, and the high-efficiency automationof welding is realized.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a sheet-shaped composite brazing material, a preparation method and application thereof, and a method for welding blades using the same. Background technique [0002] At present, the cladding material of the wear-resistant layer on the adjacent surface of the domestic blade damping table is a mixture of tungsten carbide particles and titanium-based brazing filler metal. The mixed powder is prepared into a paste, and then the operator applies the paste cladding material to the adjacent surface of the blade damping table according to the specified range with both hands. After the paste coating is dried, the blade is welded and clad. The above operations All of them are manually operated by operators, the coating amount of each blade is controlled manually, the shape of the kneading is not consistent, the consistency of the coating amount of each blade is poor,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/22B23K35/40B23K1/00
CPCB23K1/00B23K35/22B23K35/24B23K35/40
Inventor 石军呼新岗薛俊峰梁养民苏瑾牛敬段占峰蔡小龙
Owner AECC AVIATION POWER CO LTD
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