Study On Waterway Structural Improvement Of200L Material Barrel’s Bottom Mould And The Forming Technology Of The Waterway By Laser Cladding

In the improvement process of the cooling pipeline, the structure size parameters of thenew cooling pipeline are calculated based on the heat transfer principle and the related designprinciples. The cooling pipeline is distribution with the surface change of the mold cavitybased on the design principles.After design, the Solid Works Flow Simulation software is used to simulate the coolingeffect of the new cooling pipeline and initial pipeline. Based on the analysis results, theconformal cooling pipeline can reduce the temperature of the product at the same timeof cooling, so it can reduce the manufacturing time and improve the production efficiency ofthe material barrel. At the same time, as the new cooling pipeline has a good cooling effect onthe heat accumulation area of the product, it can make the temperature distribution moreuniform and improve the forming quality of product.Firstly, the basic experiment of the new cooling pipeline’s cladding forming method isdone and the Q235D steel is elected as the substrate. The single-channel cladding formingexperiment is done first. The influence of the process parameters act on themacro forming quality of cladding layer is analyzed. The microstructure analysis and hardnesstest of the cladding layer are done, the cladding layer tested is consistent with the macroquality standard. Based on the analysis results, it can be found that the microstructure of thecladding layer is closely, there is no obvious crack and pores and the white layer occurs in thecombination area of cladding layer and substrate, the cladding layer and substrate achieved abetter metallurgical bond. The micro hardness of cladding layer is higher than the substrate, soit can guarantee the performance of the formed products. Then the Multichannel lap claddingforming experiment is done based on the single-channel cladding forming experiment. Theoptimal overlapping rate is determined based on this experiment. Based on the analysis resultsof microstructure analysis and hardness test, it can be found that, as there is secondary thermaleffect of multi-channel overlap cladding, the microstructure of the cladding layer is biggerand the micro hardness is lower than the single-channel cladding layer.Easy language is used to design the solver, which is used to solve the coordinate valuesof cladding track points. The forming process of circular cooling water pipe is simulated byKUKA.SimPro2.2software. After that, the actual pipeline forming experiment is done. Theproblem in the forming process is studied and the experiment plan is improved through themethod of changing the initial location of cladding track points in turn. The relationshipbetween process parameters and pipe wall thickness is studied and the forming precision ofthe pipe wall thickness is improved through the method of speeding up the scanning speed.