Preparation process of volute spiral spring

• Main Authors: ZHANG SHICHONG, JIN CHEN
• Format: Patent
• Language: Chinese; English
• Published: 22.10.2019
• Subjects: CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF METAL WIRE

The invention discloses a preparation process of a volute spiral spring and relates to the technical field of spring preparation. The preparation process includes the following steps: S1: a spring rawmaterial is prepared; S2: hole punching treatment is performed on the raw material, and a hole punched material is obtained; S3: forming treatment is performed on the hole punched material, and a formed material is obtained; S4: winding treatment is performed on a special mandrel for the formed material, and a coil spring intermediate material is obtained; S5: normalizing, quenching and temperingtreatment is sequentially performed on the coil spring intermediate material, and a semi-finished coil spring is obtained; S6: reaming and shot blasting aftertreatment is performed on the semi-finished coil spring, and an aftertreatment semi-finished product is obtained; and S7: size inspection is performed on the aftertreatment semi-finished product, surface treatment is performed after qualifying, and finally the finish