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Method for preparing Cf/TiC-TiB2 surface modified layer through utilizing friction stir processing

A surface modification layer and friction stir technology, applied in coating, metal material coating process and other directions, can solve the problems of small application scope and high cost of metal surface modification technology, reduce production cost, improve fatigue resistance, Simple preparation process

Active Publication Date: 2017-03-08
HUANGSHAN UNIV
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of high cost and small scope of application of the existing metal surface modification technology, and to invent a method for preparing C f / TiC-TiB 2 A method of surface modification layer in order to take advantage of the high temperature generated during friction stir processing to promote Ti and B 4 C and C f A chemical reaction occurs to form a layer of C on the metal surface f / TiC-TiB 2 Surface modification layer method

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  • Method for preparing Cf/TiC-TiB2 surface modified layer through utilizing friction stir processing
  • Method for preparing Cf/TiC-TiB2 surface modified layer through utilizing friction stir processing
  • Method for preparing Cf/TiC-TiB2 surface modified layer through utilizing friction stir processing

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 , figure 2 and image 3 As shown, a preparation of C by friction stir processing (FSP for short) f / TiC-TiB 2 The method for surface modification layer, it comprises the following steps:

[0023] First, the upper surface of the substrate 1 that needs surface modification is milled with an "S"-shaped groove 2 (groove depth 2~5mm), and a small hole 3 of about 1 mm is opened around the "S" groove 2 (the size of the small hole 3 The quantity depends on the peripheral length of the "S" slot 2, generally one should be opened every 15mm or so);

[0024] Secondly, find the same material as the base material 1 to make the cover plate 4, and its thickness is 0.5~1mm. The size of the cover plate 4 should be the same as that of the base material 1. The hole 5 has a diameter of 1 mm, and the position of the small hole 5 is consistent w...

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Abstract

The invention discloses a method for preparing a Cf / TiC-TiB2 surface modified layer through utilizing friction stir processing, and particularly discloses a method for forming the Cf / TiC-TiB2 surface modified layer through utilizing high temperature generated during the friction stir processing process to promote chemical reaction of Ti, B4C and Cf. According to the method, the abrasion resistance and corrosion resistance of materials for cutters and large area materials for ships, automobiles and planes are greatly improved, the fatigue resistance of the materials is greatly improved, the preparation technology is simple and convenient, the technology is applicable to large batch production, and the production cost for preparing the materials is greatly reduced.

Description

technical field [0001] The invention relates to a tool steel blade surface strengthening technology, especially a technology for strengthening the surface of tool steel by using friction stir processing (FSP for short), specifically a method for preparing C by using friction stir processing. f / TiC-TiB 2 A method of surface modification layer, which utilizes the high temperature generated during friction stir processing to promote Ti and B 4 C and C f A chemical reaction occurs, thereby forming a layer of C f / TiC-TiB 2 surface modification layer. Background technique [0002] At present, the development of my country's CNC technology processing equipment is becoming more and more mature. However, compared with the development of CNC machine tool equipment, the development of my country's CNC machine tool tools is relatively backward. The processing tools for many important workpieces are imported from abroad, and their prices are quite high. Expensive, usually half of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 汪建利汪洪峰刘胜荣宋娓娓褚园
Owner HUANGSHAN UNIV
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