{"id":2092,"date":"2026-06-29T18:27:31","date_gmt":"2026-06-29T10:27:31","guid":{"rendered":"https:\/\/metalstampingparts.ltd\/fine-blanking-guide\/"},"modified":"2026-06-29T18:41:28","modified_gmt":"2026-06-29T10:41:28","slug":"fine-blanking-guide","status":"publish","type":"page","link":"https:\/\/metalstampingparts.ltd\/ceb\/fine-blanking-guide\/","title":{"rendered":"Fine Blanking Giya"},"content":{"rendered":"

Short answer:<\/strong> fine blanking is a paghulma process that uses a triple-action press with a V-ring impingement ring to produce parts with a fully sheared, smooth edge (100% shear zone) and positional accuracy of plusmn0.01-0.02 mm. Unlike conventional paghulma, fine blanking suppresses the fracture zone, producing near-burr-free functional edges ideal for gears, ratchets, levers, and parts that cannot tolerate secondary deburring.<\/p>\n

This guide is for design engineers, sourcing teams, and quality engineers evaluating whether fine blanking is the right process. Fine blanking costs more per stroke than conventional paghulma but eliminates secondary operations such as shaving, reaming, grinding, or deburring.<\/p>\n

Ipadala your part drawing, material, thickness, and edge quality requirements through the RFQ form<\/a>. For related precision processes, see high precision paghulma sa metal<\/a> and paghulma sa metal tolerances guide<\/a>.<\/p>\n

How fine blanking is different<\/h2>\n

Before the punch moves, a V-ring on the die presses into the material around the part contour, creating a compressive state that suppresses fracture. The punch then moves through under counterpunch back pressure.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Characteristic<\/th>\nConventional blanking<\/th>\nFine blanking<\/th>\n<\/tr>\n<\/thead>\n
Shear zone percentage<\/td>\n30-50% of thickness<\/td>\n100%<\/td>\n<\/tr>\n
Fracture zone<\/td>\nPresent (40-60%)<\/td>\nEliminated<\/td>\n<\/tr>\n
Typical burr height<\/td>\n0.05-0.20 mm<\/td>\n0.01-0.05 mm<\/td>\n<\/tr>\n
Positional accuracy<\/td>\nplusmn0.05-0.10 mm<\/td>\nplusmn0.01-0.02 mm<\/td>\n<\/tr>\n
Tool cost<\/td>\nBaseline<\/td>\n1.5-3x conventional<\/td>\n<\/tr>\n
Cycle speed<\/td>\n60-400 spm<\/td>\n20-80 spm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Materyal suitability<\/h2>\n