CONTINUOUS TREATMENT OF LUBRICATING FILM OF WIRE ROD AND CONTINUOUS WIRE DRAWING DEVICE

摘要

PURPOSE: To provide the compact constitution of a device for length, to dispense with a watertreatment and sludge treatment and to prevent phosphor infiltration from occurring in continuous wire drawing. ;CONSTITUTION: SUJ2 steel forms a lubricating film through KB₅O₈.4H₂O and SUS440C steel forms a lubricating film through KHSi₂O₅ to be drawn with a continuous wire drawing device provided with a straightening device 11, a shot blast 13, a high frequency heating device 15, an inorgaic salt sticking tank 17 to contain water-soluble inorganic salt solution in a heat insulating state, a wire raising device 19, blower 21, a hot air blowing pipe 23 and a wire drawing die device 25 with a die box between a supply stand 1 and winding device 3. Lubricating film treatment with KB₅O₈.4H₂O+Na₂B₄O₇.10H₂O is applied to SCM435 steel and with K₂-SO₄ to SUSXM7 solution heat treatment material to forge a socket bolt. Wire surface roughness is limited to Rz≤20μm in descaling.;COPYRIGHT: (C)1993,JPO&Japio