In order to exploring the influence of process parameters on the forming quality of H13 die steel

the binder jetting additive manufacturing experiment was carried out with different layer thickness and the binder saturation

The influence of layer thickness and binder saturation on forming quality was analyzed

with testing the relative density and dimensional accuracy of green parts as well as the microhardness

surface roughness and density of sintered parts. The results indicate that the layer thickness and the binder saturation can significantly affect the forming quality of the parts. The relative density of the green part decreases with the increase of layer thickness. Due

to the binder saturation increasing

the dimensional accuracy and the relative density of the green part decrease

and the surface roughness of the sintered part increase. When the layer thickness and binder saturation are 75 μm and 80% respectively

the relative density of the green part reaches the maximum value of 55.8%

but the sintering density is merely 79.5%. Once the layer thickness and the binder saturation increased to 150 μm and 125% respectively

the sintered sample obtained the highest density of 95.7%

with the microhardness of 785.7HV

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. It makes up for the vacancy of forming and sintering process parameters of H13 die steel in binder jetting additive manufacturing filed.