Production technology for anti-loosening double-segment wire screw

Abstract

The invention discloses a production technology for an anti-loosening double-segment wire screw. The production technology includes the following steps that S1, in wiredrawing, a low-carbon steel wireis machined through a steel wire rod wiredrawing machine to have a needed diameter; S2, in balling, the low-carbon steel wire after wiredrawing is subjected to balling treatment through a balling furnace; S3, in blanking, the low-carbon steel wire is selected and cut into a steel wire segment with a fixed length; S4, in heading, a heading machine is adopted for machining one end of the steel wiresegment into a screw head through a die; S5, in tail pointing, a tail pointing machine is adopted for machining the other end of the steel wire segment into a double-segment wire; S6, in thread rolling, a thread rolling machine is adopted for machining the periphery of the steel wire segment into threads; S7, heat treatment is performed, wherein normalizing and quenching operation is sequentiallyoperated on the screw, wherein normalizing temperature is 600-650 DEG C, and quenching temperature is 760-780 DEG C; S8, galvanizing is performed. The machining technology for the screw is simple, ascrew formed through machining in an early period can be effectively subjected to heat treatment, in this way, the overall performance of the screw is greatly improved, high surface strength and rigidity of the screw are realized, and the quality of the screw is guaranteed.

Description

technical field [0001] The screw processing technology of the present invention particularly relates to a production technology of anti-loosening double-segment thread screws. Background technique [0002] Screws are common in machinery, electrical appliances, and buildings. They are generally made of metal and are used to connect objects. They have a wide range of applications and a large amount. For frequently used drilling screws or drywall screws, etc., in production, through The steel wire is cut into the length of the nail, and then each section of the steel wire is headed and tailed, and then the screw is processed by a screw thread rolling machine with double-stage threads. For the nail tip that can play a self-tapping effect, due to the late Improper temperature control in the heat treatment process will cause the performance of the screw tip to fail to meet the required requirements and be easily damaged. Contents of the invention [0003] The purpose of the pre...

AI Technical Summary

Problems solved by technology

[0002] Screws are common in machinery, electrical appliances, and buildings. They are generally made of metal and are used to connect objects. They have a wide range of applications and a large amount. For frequently used drilling screws or drywall screws, etc., in production, through The steel wire is cut into the length of the nail, and then each section of the steel wire is headed and tailed, and then the screw is processed by a screw thread rolling machine with double-stage threads. For the nail tip that can play a self-tapping effect, due to the late Improper temperature control in the heat treatment process causes the screw tip performance to fail to meet the required requirements and is easy to damage