Process Analysis and Research Solution of Crack Defects in Localised High Hardness Metal Parts
In machining,for some of the use of working conditions have impact strength requirements of the parts,in its force surface often need to have a high hardness,at the same time in order to minimise the wear and tear of such parts in the process of use,to increase the service life of the end face of the higher roughness requirements,these parts are generally used in the machining of the heat treatment to improve the hardness,and then improve the roughness of the process through grinding.But in this process,may occur in the processing surface cracks,cracks for metal parts belong to very serious defects,by listing a certain type of engine valve tip in the machining process of cracks,analysis of its causes,and through the study gives some cracks early discovery and solution to the programme.
metal partslocal high hardnesscrackprocess analysis
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