Study on Component Metal Deformation Law of 45/316L Cladding Tubes in Three-roll Skew Rolling Bonding Process
The three-roll skew rolling bonding process is proposed to solve the efficient continuous forming problems of seamless metal cladding tubes with high strength and corrosion resistance,which possess characteristics of high component melting point,large deformation resistance,and difficult interfacial bonding.Based on the ABAQUS software,a numerical simulation model is established for the three-roll skew rolling bonding process of 45/316L cladding tubes.The variation laws of the diameter reduction rate,wall reduction rate,elongation rate,component metal wall thickness ratio,etc.are studied under different diameter reduction rates and initial component metal wall thickness ratios.Finally,45/316L cladding tubes were successfully prepared through the experiment,verifying the accuracy of the simulation analysis.The results show that 45 carbon steel and 316L stainless steel are forced to synchronously deform under multiple constraints of end welding,roll,and mandrel.The component metal wall thickness ratios are unchanged,laying a theoretical foundation for the accurate control of target size specifications.Tensile shear tests show that tensile shear fractures occur on the matrix of 45 carbon steel,and the bonding interface does not crack after the lateral bending test,proving that interfaces achieve high-strength metallurgical bonding.Therefore,the three-roll skew rolling bonding process provides a new method for realizing the precise control of component metal wall thickness,interfacial high-strength metallurgical bonding,and efficient continuous near-net forming of seamless metal cladding tubes with high strength and corrosion resistance.
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