Abstract
Heat checking is one of the principal causes of termination die-casting molds life. Thermal fatigue cracking of dies because of thermal and mechanical loads may condense the lifetime of the die. The surface quality of dies and as a result the surface of castings is degraded due to cracks. New pre-hardened tool steel known as TOOLOX44, addresses the issue by improving the elimination of heat treatment and optimization of impact toughness. This research investigates thermal fatigue cracking of dies by applying TOOLOX44 in the die casting mold specimen. The surface defect during experimental test was identified by visual analysis of the surface and potential causes of the undesirable effect were analyzed and shown by Cause effect diagram. In addition, microstructures of Toolox44 were analyzed by Light optical microscope and Scanning electron microscope. Finally, chemical compositions of typical TOOLOX44 compared TOOLOX44 sample in 20000 cycles test.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
