Optimization Of Technology Parameter From Hot Working Mould Laser Bionic Strengthen

As the rapid development of car and household appliances, further demandabout mould is proposed for this. It is a continuous topic that improving thequality and service life of mould. For the short life of enterprise hot forging diedirectly caused to problems in the waste of resources and the rising cost ofproduction. In recent years, the technology of laser causes great attention of moreand more researchers. Mould laser bionic strengthening technology caneffectively prolong service life of the die and save the expensive cost of patterndrawing owing to improving micro chemical and organizational composition ofthe mould surface, and enhancing the wear resistance, hardness and fatigueresistance. So it will greatly reduce the cost of product, cut the production cycleand bring significant economic benefits.Based on studying the plant foliage biological prototypes of crackingresistant and analyzing one of the main factors affecting its life of hot workmould H13surface thermal fatigue crack, it is put forward thoughts about thelocal laser bionic blocking the mould surface crack. Create the mathematicalmodel of bionic unit outline and analysis it. In chapter three, use the orthogonaldesign to arrange experiment and then laser melting. Then according to the areaof unit to make sure the best test parameters. And analysis metallographicstructure of unit, measure the hardness of laser bionic strengthening. Last,compare the metallographic structure and hardness to unprocessed. In chapterfour, adopt to the methods of laser wire filling and laser wire filling after lasermelting to process surface of test specimen. Then according to the area of unit tomake sure the best test parameters. And analysis metallographic structure of unit,measure the hardness of laser bionic strengthening. Last, compare the metallographic structure and hardness to unprocessed. In chapter five, test thethermal fatigue property of after laser bionic strengthening. Then use the testparameter of former measurement of three methods to process three testspecimens. Set an example which is not be processed for comparison. And thengo thermal fatigue experiment separately. Last, analysis result of thermal fatigueexperiment and find the best method of laser bionic strengthening.