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An anti-titanium fire coating

A technology of coating and titanium fire, applied in the direction of coating, metal material coating process, etc., can solve the problems of poor impact resistance of anti-titanium fire coating, weak matrix bonding, and reduced fatigue performance of the matrix, so as to ensure anti-fatigue Performance, strong oxidation tendency, effect of high temperature oxidation resistance

Active Publication Date: 2019-07-02
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing anti-titanium fire coatings generally have shortcomings such as poor impact resistance, weak bonding with the substrate, or significantly reducing the fatigue performance of the substrate, which cannot meet the current needs. Therefore, it is necessary to develop coating materials with higher performance and Preparation technology

Method used

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  • An anti-titanium fire coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The titanium alloy base material is Ti60 alloy,

[0033] The solder is a continuous thin ribbon Ti-37.5Zr-15Cu-10Ni based amorphous alloy with a thickness of 50μm.

[0034] The hard wear-resistant particles are cubic boron nitride CBN particles, and the cubic boron nitride CBN particles are electrolessly plated with Ni (containing Ni wt.30%),

[0035] The mass ratio of CBN particles to solder is: 8:2

[0036] First, place a thin ribbon solder on the tip of the blade so that the solder wraps the tip of the blade that needs to be coated with an anti-titanium fire coating. The organic adhesive is mixed with Ni-plated cubic boron nitride CBN particles (volume ratio 1:10), and then evenly coat it on the solder (the organic binder is mixed with CBN particles, which can avoid the falling and loss of powder particles during furnace loading and vacuuming, and the organic binder will gradually Volatilize);

[0037] At greater than or equal to 8×10 -4 In the high vacuum environment of Pa ...

Embodiment 2

[0051] The base material is Ti60 alloy,

[0052] The solder is a continuous thin ribbon Ti-37.5Zr-15Cu-10Ni based amorphous alloy with a thickness of 50μm.

[0053] The hard wear-resistant particles are cubic boron nitride CBN particles, and the cubic boron nitride CBN particles are electrolessly plated with Ni (containing Ni wt.30%),

[0054] The mass ratio of CBN particles to solder is 7:3

[0055] Firstly, a thin ribbon-shaped solder is placed on the tip of the blade, so that the solder wraps the tip of the blade that needs to be coated with anti-titanium fire coating, and the organic adhesive is mixed with Ni-plated cubic boron nitride CBN particles (volume ratio 1:10), then evenly coat it on the solder;

[0056] At greater than or equal to 8×10 -4 In the high vacuum environment of Pa, the intermediate frequency induction coil is used to locally heat the rotor blade tip (the size and shape of the coil can be designed according to the shape of the blade tip), and the heating tempera...

Embodiment 3

[0071] The base material is Ti60 alloy,

[0072] The solder is a continuous thin ribbon Ti-37.5Zr-15Cu-10Ni based amorphous alloy with a thickness of 50μm.

[0073] The hard wear-resistant particles are cubic boron nitride CBN particles, and the cubic boron nitride CBN particles are electrolessly plated with Ni (containing Ni wt.30%),

[0074] The mass ratio of CBN particles to solder is 6:4,

[0075] First, place a thin ribbon solder on the tip of the blade so that the solder wraps the tip of the blade that needs to be coated with anti-titanium fire coating. The organic adhesive is mixed with Ni-plated cubic boron nitride CBN particles (volume ratio 1 : 10), and then evenly coat it on the solder;

[0076] At greater than or equal to 8×10 -4 In the high vacuum environment of Pa, the intermediate frequency induction coil is used to locally heat the rotor blade tip (the size and shape of the coil can be designed according to the shape of the blade tip), so that the heating temperature is...

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Abstract

The invention discloses a titanium fire resistance coating. A continuous strip-shaped Ti-37.5Zr-15Cu-10Ni base amorphous alloy is selected to serve as brazing filler metal, CBN particles are selected as hard wear-resisting particles, strip-shaped brazing filler metal is placed on the blade tip in advance, and wraps the blade tip required to be coated with the titanium fire resistance coating, an organic bonding agent is used for being mixed with Ni-plated CBN particles, and the brazing filler metal is evenly coated with the bonding agent; in the vacuum environment, a medium-frequency induction coil is used for locally heating a rotor blade tip, the heating temperature is kept between 840 DEG C to 850 DEG C and is kept for a certain time, the brazing filler metal is completely molten, the brazing filler metal is naturally cooled in the high-vacuum environment, and the titanium fire resistance coating is formed; and the titanium fire resistance coating obtained through the preparing method of the titanium fire resistance coating has high hardness, high wear resistance, high impact resistance, high temperature oxidability resistance, high fire resistance and high combination strength, meanwhile, the property of the base body cannot be affected, and the base body anti-fatigue property is ensured.

Description

Technical field [0001] The invention belongs to the technical field of anti-titanium fire coatings, and specifically relates to an anti-titanium fire coating. Background technique [0002] Titanium alloy has the advantages of high strength, low density and high melting point, so it is widely used in the compressor casing, rotor disc, rotor blade and other components of aviation gas turbine engine to reduce the weight of the engine and increase the thrust-to-weight ratio. However, ordinary titanium alloys will burn under certain temperature, pressure and airflow velocity, and the combustion will spread rapidly, damaging engine components, thus restricting the application of titanium alloys in aircraft engines. [0003] In order to further improve engine efficiency, higher requirements are put forward for the sealing performance of the casing in the combustion chamber. Titanium alloy rotor blades rotate at high speed at high temperatures, and the blades are elongated due to thermal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C32/00C22C30/00
CPCC22C30/00C22C2026/003C23C24/103
Inventor 王铁钢刘艳梅戚厚军李彤
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE