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[vc_row][vc_column][vc_custom_heading source=”post_title”][vc_column_text] 1. Metallographic structure and elemental composition of the workpiece material Due to the discharge of the electric spark, the metallographic structure of the

[vc_row][vc_column][vc_custom_heading source=”post_title”][vc_column_text] Vacuum casting is a process that uses a ventilated mold. The molten metal flows into the mold by air pressure and then removes

[vc_row][vc_column][vc_custom_heading source=”post_title”][vc_column_text] Vacuum casting can be roughly divided into three types: vacuum suction casting, vacuum low pressure casting, and vacuum differential pressure casting. 1.Vacuum suction