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Surface treatment method for enhancing fatigue resistance of metal-based composite material

A composite material and surface treatment technology, which is applied in the field of material surface treatment, can solve the problems of reduced fatigue resistance and complicated process flow, and achieve the effect of improved fatigue resistance, simple process flow, and tight internal structure

Pending Publication Date: 2022-02-15
常州市丰润特种纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a surface treatment method for enhancing the anti-fatigue performance of metal matrix composites, which solves the problems that the process flow is complex and the fatigue resistance will be greatly reduced when the metal matrix composites are corroded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A surface treatment method for enhancing the fatigue resistance of metal matrix composites, comprising the following steps:

[0027] S1: Fix the metal matrix composite material, and extrude and shape the metal matrix composite material through a metal extruder. The extrusion force of the metal extruder is 200MN, and the extrusion times are 500 times;

[0028] S2: Place the extruded metal matrix composite material in a high-pressure environment for heat treatment, the pressure is 300kPa, the heating temperature is 430°C, and the heating time is 30 minutes;

[0029] S3: The surface of the heated metal matrix composite material is polished by a metal grinder, the speed of the metal grinder is 35000r / min, and the thickness of the grinding amount is 0.03mm; the polished metal matrix composite material is put into a CNC lathe for processing, and the CNC The lathe processing steps are: rough machining, finishing and polishing, removing the burrs on the surface, and leveling th...

Embodiment 2

[0034] A surface treatment method for enhancing the fatigue resistance of metal matrix composites, comprising the following steps:

[0035] S1: Fix the metal matrix composite material, and extrude and shape the metal matrix composite material through a metal extruder. The extrusion force of the metal extruder is 220MN, and the extrusion times are 510 times;

[0036] S2: Place the extruded metal matrix composite material in a high-pressure environment for heat treatment, the pressure is 310kPa, the heating temperature is 435°C, and the heating time is 35 minutes;

[0037] S3: The surface of the heated metal matrix composite material is polished by a metal grinder, the speed of the metal grinder is 35000r / min, and the thickness of the grinding amount is 0.04mm; the polished metal matrix composite material is put into a CNC lathe for processing, and the CNC The lathe processing steps are: rough machining, finishing and polishing, removing the burrs on the surface, and leveling th...

Embodiment 3

[0042] A surface treatment method for enhancing the fatigue resistance of metal matrix composites, comprising the following steps:

[0043] S1: Fix the metal matrix composite material, and extrude and shape the metal matrix composite material through a metal extruder. The extrusion force of the metal extruder is 230MN, and the extrusion times are 520 times;

[0044] S2: Place the extruded metal matrix composite material in a high-pressure environment for heat treatment, the pressure is 320kPa, the heating temperature is 440°C, and the heating time is 40 minutes;

[0045] S3: The surface of the heated metal matrix composite material is polished by a metal grinder, the speed of the metal grinder is 35000r / min, and the thickness of the grinding amount is 0.045mm; the polished metal matrix composite material is put into a CNC lathe for processing, and the CNC The lathe processing steps are: rough machining, finishing and polishing, removing the burrs on the surface, and leveling t...

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PUM

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Abstract

The invention discloses a surface treatment method for enhancing the fatigue resistance of a metal-based composite material, and the method comprises the following steps of: S1, fixing the metal-based composite material, and carrying out extrusion molding on the metal-based composite material through a metal extruder for 500-800 times; S2, placing the metal-based composite obtained after extrusion molding in a high-pressure environment for heating treatment at a heating temperature of 430-490DEG C for 30-60min; and S3, conducting grinding treatment on the heated surface of the metal-based composite material through a metal grinding machine, and keeping the grinding thickness ranging from 0.03mm to 0.09mm. The metal-based composite material is extruded and shaped through a metal extruder, so that the internal structure of the metal-based composite material is tighter, the anti-fatigue performance is improved, the surface of the metal-based composite material is heated and softened, grinding and machining polishing are facilitated, uneven positions on the surface of the metal-based composite material are removed, and the anti-fatigue performance of the metal-based composite material is enhanced, so that the effect of enabling the technological process to be simple is achieved.

Description

technical field [0001] The invention relates to the technical field of material surface treatment, in particular to a surface treatment method for enhancing the anti-fatigue performance of metal matrix composite materials. Background technique [0002] Metal matrix composites are composite materials that are artificially combined with metal and its alloys as the matrix and one or several metal or non-metallic reinforcements. Metal matrix composites are eye-catching high-temperature materials for aerospace and can be used as Fatigue of aircraft turbine engine and rocket engine hot zone and surface material of supersonic aircraft refers to the fatigue caused by repeated action of various stresses during use, which gradually deteriorates the physical and mechanical properties of the product, resulting in cracks, heat generation, Peeling, damage, etc., so that the performance of the final loss of use value, and fatigue resistance or fatigue resistance refers to the ability to wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B21C23/00C21D1/00C23G1/14
CPCB24B1/00B21C23/00C21D1/00C23G1/14
Inventor 庄文华庄丽艳陈群石先霞尹学仕
Owner 常州市丰润特种纤维有限公司