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CN-117206746-B - Flux-cored wire for WC ceramic particle reinforced titanium-based composite material and preparation method thereof

CN117206746BCN 117206746 BCN117206746 BCN 117206746BCN-117206746-B

Abstract

The invention discloses a WC ceramic phase reinforced titanium-based gas shielded flux-cored wire, which comprises a flux core and a welding skin, wherein the flux core comprises, by mass, 40% -60% of WC, 10% -16% of Ni, 5% -12% of Al, 5% -10% of Cr, 0.1% -0.5% of Si and the balance of titanium powder, and the sum of the mass percentages of the components is 100%.

Inventors

  • ZHANG MIN
  • XUE TIANQI
  • SHANG JING
  • ZHOU WENKUN
  • MA KE
  • MAO WEI

Assignees

  • 西安理工大学

Dates

Publication Date
20260508
Application Date
20230911

Claims (10)

  1. The flux-cored wire for the WC ceramic particle reinforced titanium-based composite material comprises a flux core and a welding skin, and is characterized in that the flux core comprises, by mass, 40% -60% of WC, 10% -16% of Ni, 5% -12% of Al, 5% -10% of Cr, 0.1% -0.5% of Si and the balance of titanium powder, wherein the sum of the mass percentages of the components is 100%.
  2. 2. The flux-cored wire for WC ceramic particle-reinforced titanium-based composite material according to claim 1 wherein the weld skin is TA1 titanium ribbon.
  3. 3. The flux-cored wire for WC ceramic particle reinforced titanium-based composite materials of claim 1, wherein the filling rate of a flux core in the flux-cored wire is 26-30 wt%.
  4. A method for preparing a flux-cored wire for WC ceramic particle reinforced titanium-based composite material, which is characterized by comprising the following steps of: step1, cleaning a TA1 titanium belt; step 2, weighing the components according to mass percentages; Step 3, dry-mixing the components weighed in the step 2 to obtain the drug core powder; step 4, preparing a welding wire by a flux-cored wire manufacturing machine to obtain a titanium alloy flux-cored wire precursor; step 5, carrying out cold drawing and reducing wire drawing die and annealing on the titanium alloy flux-cored wire precursor obtained in the step 4; and 6, cleaning the welding wire obtained in the step 5 to obtain the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material.
  5. 5. The method for preparing the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material, which is characterized in that the cleaning process in the step 1 is specifically that firstly, a mixed solution of NaOH and acetone is used for cleaning a titanium belt, then clear water is used for cleaning, and finally, a mixed aqueous solution of HF and HNO 3 is used for ultrasonic cleaning, so that the cleaned TA1 titanium belt is obtained.
  6. 6. The method for preparing the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material, which is characterized by comprising the following steps of 15% of NaOH in a mixed solution of NaOH and acetone, 85% of acetone in a mixed aqueous solution of HF and HNO 3 %, 5% of HNO 3 in a mixed aqueous solution of HF and HNO 3 %, and carrying out ultrasonic cleaning for 1-2 min at an ultrasonic frequency of 20-30 kHz.
  7. 7. The preparation method of the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material is characterized in that the flux-cored wire weighed in the step (2) comprises, by mass, 40% -60% of WC, 10% -16% of Ni, 5% -12% of Al, 5% -10% of Cr, 0.1% -0.5% of Si and the balance of titanium powder, wherein the sum of the mass percentages of the components is 100%, the components are heated, then the raw material powders of the components are dry-mixed in a mixer, and the particle size of the raw material powder of the components is not more than 124 mu m.
  8. 8. The method for preparing the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material, which is characterized in that the step 4 is specifically that the flux-cored powder obtained by uniformly mixing the step 3 is wrapped in a TA1 titanium belt by a flux-cored wire making machine, and the TA1 titanium belt is closed by a forming machine to obtain a titanium alloy flux-cored wire precursor with the diameter of 2.1 mm.
  9. 9. The method for preparing the flux-cored wire for WC ceramic particle reinforced titanium-based composite material, which is characterized in that the step 5 specifically comprises the steps of carrying out multi-pass cold drawing and reducing wire drawing dies on the titanium alloy flux-cored wire precursor obtained in the step 4, carrying out stress relief annealing after each cold drawing and reducing wire drawing die is carried out three times, and obtaining a welding wire with the diameter of 1.6 mm; The specific process of the multi-pass cold drawing reducing wire drawing die comprises the steps of sequentially passing through wire drawing dies with diameters of 2.0mm, 1.9mm, 1.8mm, 1.7mm and 1.6mm, wherein the stress relief annealing time is 60-90 min, and the temperature is 600-650 ℃.
  10. 10. The method for preparing the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material, which is characterized in that the step 6 is specifically that cotton cloth dipped with acetone or absolute ethyl alcohol is used for wiping greasy dirt on the welding wire obtained in the step 5, and finally the welding wire is straightened by a wire drawing machine, coiled into a disc and sealed and packaged.

Description

Flux-cored wire for WC ceramic particle reinforced titanium-based composite material and preparation method thereof Technical Field The invention belongs to the technical field of titanium alloy surface modification, and relates to a flux-cored wire for WC ceramic particle reinforced titanium-based composite materials. The invention also relates to a preparation method of the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material. Background The titanium and the alloy thereof have high specific strength, good corrosion resistance, high temperature resistance, good biocompatibility and other excellent comprehensive properties, are important materials in aerospace, petrochemical, military industry manufacturing industry and medical industry, but the titanium and the titanium alloy have high chemical activity, large friction coefficient, low hardness, poor wear resistance and high processing and smelting difficulty, the titanium alloy is easy to burn when rubbed at a high speed under the high temperature condition, so that 'titanium fire' is formed, the defects can seriously obstruct the use of the titanium alloy as a structural part and a friction part, the further application of the titanium alloy as a structural material is limited to a great extent, and the traditional titanium alloy material can not meet the severe use environment along with the breakthrough progress in the fields of aerospace, ocean engineering and the like at the present stage, so in order to improve the wear resistance, the oxidation resistance, the surface hardness and other properties of the titanium base material, the ceramic hard phase is added into the titanium alloy base body, and the ceramic phase reinforced titanium base composite material is prepared to improve the wear resistance of the titanium alloy, so that the service life of the titanium alloy under the severe condition is prolonged. Disclosure of Invention The invention aims to provide a flux-cored wire for WC ceramic particle reinforced titanium-based composite materials, which solves the problems of poor wear resistance and low hardness of the existing titanium alloy. The invention further aims to provide a preparation method of the flux-cored wire for the WC ceramic particle reinforced titanium matrix composite material. The first technical scheme adopted by the invention is that the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material comprises a flux core and a welding skin, wherein the flux core comprises, by mass, 40% -60% of WC, 10% -16% of Ni, 5% -12% of Al, 5% -10% of Cr, 0.1% -0.5% of Si and the balance of titanium powder, and the sum of the mass percentages of the components is 100%. The first technical scheme of the invention is characterized in that: wherein the welding skin is a TA1 titanium belt; wherein the filling rate of the flux core in the flux-cored wire is 26-30wt%. The second technical scheme adopted by the invention is that the preparation method of the WC ceramic phase reinforced titanium-based gas shielded flux-cored wire adopts the flux-cored wire for WC ceramic particle reinforced titanium-based composite material, and is implemented specifically according to the following steps: step1, cleaning a TA1 titanium belt; step 2, weighing the components according to mass percentages; Step 3, dry-mixing the components weighed in the step 2 to obtain the drug core powder; step 4, preparing a welding wire by a flux-cored wire manufacturing machine to obtain a titanium alloy flux-cored wire precursor; step 5, carrying out cold drawing and reducing wire drawing die and annealing on the titanium alloy flux-cored wire precursor obtained in the step 4; and 6, cleaning the welding wire obtained in the step 5 to obtain the flux-cored wire for the WC ceramic particle reinforced titanium-based composite material. The second technical proposal of the invention is also characterized in that: Firstly, cleaning a titanium belt by using a mixed solution of NaOH and acetone, then cleaning the titanium belt by using clear water, and finally ultrasonically cleaning the titanium belt by using a mixed aqueous solution of HF and HNO 3 to obtain a cleaned TA1 titanium belt; Wherein the mass fraction of NaOH in the mixed solution of NaOH and acetone is 15%, the mass fraction of acetone is 85%, the mass fraction of HF in the mixed aqueous solution of HF and HNO 3 is 5%, the mass fraction of HNO 3 is 35%, ultrasonic cleaning is carried out for 1-2 min, and the ultrasonic frequency is 20-30 kHz; The method comprises the following steps of (1) heating the components, and then dry-mixing the component raw material powder in a mixer uniformly to obtain the drug core powder, wherein the drug core weighed in the step (2) comprises, by mass, 40% -60% of WC, 10% -16% of Ni, 5% -12% of Al, 5% -10% of Cr, 0.1% -0.5% of Si and the balance of titanium powder, and the sum of the component contents is 100%; Wrapping th