Method for manufacturing TiB<2> ceramic-reinforced wear-resistant surfacing flux-cored welding wire
A welding flux and welding wire technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of low service life of wear-resistant metal components, poor metal fluidity, and wear resistance that does not meet the requirements for use.
Inactive Publication Date: 2013-08-14
太原理工技术转移有限公司
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Problems solved by technology
[0005] At present, the repair of wear-resistant parts is mainly welded by wear-resistant surfacing welding flux-cored welding wire. However, the comprehensive performance of high-hardness wear-resistant surfacing welding flux-cored welding wire is not ideal at present, and there are many disadvantages, such as: the chemical composition ratio of the flux core is not good Reasonable, poor metal fluidity during welding, low hardness of welded joints, wear resistance, and low corrosion resistance, so that the wear resistance of the surfacing alloy cannot meet the use requirements, resulting in a short service life of wear-resistant metal components
Method used
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Embodiment 1
[0057] The welding method is as follows:
[0058] Deltaweld-852 welding machine is used for welding, DC reverse connection, no shielding gas, open arc surfacing welding, welding process parameters: voltage 27-36V, current 460-500A, wire feeding speed: 460-500mm / min, welding wire The dry elongation is 20-30mm; a hard phase is formed in the surfacing alloy—TiC-TiB 2 The composite compound is dispersed in the primary carbide and matrix structure, forming high hardness and wear-resistant particles, which improves the hardness and wear resistance of the surfacing alloy.
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Abstract
The invention relate to a method for manufacturing a TiB<2> ceramic-reinforced wear-resistant surfacing flux-cored welding wire. The method aims to overcome shortcomings of existing flux-cored welding wires for wear-resistant surfacing. The method includes mixing metal powder with nonmetal powder; manufacturing a steel strip of the welding wire; adding the powder into the steel strip; and winding the steel strip to form a reel and packaging the reel to obtain the titanium diboride ceramic-reinforced wear-resistant surfacing flux-cored welding wire. The metal powder includes high-carbon ferrochrome powder, medium-carbon ferromanganese powder, ferromolybdenum powder, ferrosilicon powder and aluminum magnesium alloy powder, the nonmetal powder includes titanium diboride powder and graphite powder. The method has the advantages that the proportion of chemical compositions of a powder core of the flux-cored welding wire is reasonable and advanced, data are accurate, the TiB<2> ceramic-reinforced wear-resistant surfacing flux-cored welding wire is good in welding effect and high in quality, a welded joint is high in strength and good in wear-resistant performance, the hardness of a welded layer reaches HRC68.4, the wear-resistant performance is improved by 20%, and the titanium diboride ceramic-reinforced wear-resistant surfacing flux-cored welding wire is perfect.
Description
technical field [0001] The present invention relates to a kind of TiB 2 The invention discloses a preparation method of a ceramic-strengthened wear-resistant surfacing welding flux-cored wire, which belongs to the technical field of preparation and application of metal welding materials. technical background [0002] Wear is one of the main reasons for mechanical failure. Modern mechanical equipment and its parts have higher and higher requirements on the wear performance of materials during use, and the service life is increasingly affecting the mechanical properties and production efficiency of equipment. [0003] Surfacing welding is an economical and fast process for material surface modification, which can effectively change the wear resistance, corrosion resistance and other mechanical properties of the material surface, and is beneficial to improving the service life of parts, rational use of materials, and improvement of product performance. , Cost reduction has a s...
Claims
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IPC IPC(8): B23K35/40B23K35/22
Inventor 刘海云孟庆森陈少平熊瑞曹青张俊张俊峰
Owner 太原理工技术转移有限公司
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