Gas Flow Velocity Calibration in Tool Steel Powder Bed Fusion
Calibrating cross-flow velocity to 2.2-2.8 m/s prevents laser plume attenuation and condensate redeposition in tool steel powder bed fusion.
Tool Steel AM
Meaning
Industrial fabrication of high-hardness, wear-resistant steel components is performed using metal powder consolidation techniques. The adoption of tool steel AM has enabled the production of complex injection molds with integrated conformal cooling channels. These advanced structures cannot be made using traditional drilling methods.
This technique is particularly valuable for the rapid production of customized forming dies and repair components for manufacturing machinery.
Cracking Susceptibility
High carbon and alloy content makes these materials highly sensitive to thermal stress during the printing process. When executing tool steel AM, severe cooling rates can induce the formation of brittle martensite, which causes microcracking. To prevent this cracking, printers must use high-temperature build-plate heating to slow the cooling rate.
Heat Treatment
Post-processing is required to achieve the necessary hardness and toughness of the printed tool. After completing tool steel AM, the parts undergo stress relief and tempering to optimize their microstructure. This step ensures that the tooling can withstand the high mechanical loads of industrial stamping.
Economic Valuation
Sourcing decisions for these technologies depend on the reduction in cycle times achieved by conformally cooled tooling. Companies calculate the return on investment by comparing the high printing cost against the increased productivity of the molding process. Faster cooling reduces injection molding cycle times by up to thirty percent.