Research On Embedding Stainless Steel Capillary In High Frequency Induction Cladding

With the rapid development of integrated modular product,the product is moving toward miniaturization and it urgently demands more neotype micromachining technology.Micro-hole and mini-duct are common structures in aviation machinery,automobile,precision medical equipment et al.While,present neotype micromachining technology exists inherent defects.Induction cladding,a new surface modification technique,could produce high-performance metal metallurgy composite coating and embedded steel under the lower cost condition,which has a broad implementation prospect in a practical application.By closely combining with the actual requirements of the production of high corrosion-resistant coating,micro-hole and mini-duct.Based on induction depositing technology,the high corrosion-resistant stainless steel capillary is embedded in the coating of shaftclass or plate parts.The main research contents is as follow:For the shortcomings of the micro-hole processing technology,the experimental platform of embedding stainlesssteel capillary in induction melting for preparation of Ni60 Coating is built.Meanwhile,the paper improves the manufacturing process of coating,bring in the technology of embedding capillary by induction melting.Based on ANSYS,the paper builds the mathematical 3D model for numerically simulating the temperature distribution,designs validation experiment,analyzes the relation between technology parameters and temperature field distribution under the condition of single variable,explores the heat transfer law in the process of embedding capillary.Based on the mathematical 3D model for numerically simulating the temperature distribution of shaftclass and plate parts,this paper systematically design and improve the experiment of embedding capillary by induction melting.The text observes the quality of embedding tube from the macroscopic point and the structure morphology of different materials by optical microscopy,watchs the quality of embedding tube and the morphology under secondary electron by electron probe,selects key areas to analyze the element composition and the law of combination and diffusion between coating,embedding tube and workpiece.Based on calculation of deformation rate of pliers entry tube inner and outer diameter,this topic quantificationally Analyze pliers entry tube forming quality.Based on corrosion test,this topic tests the corrosion resistance of the coating and embedding tube and the key point residual stress of shaftclass and plate parts by X-ray stress measuring instrument,gets the theoretical basis of design,adjustment of embedding capillary by induction melting and industrial application.