A processing technology for processing hot-rolled wire rod into straight silver bright bar

Abstract

The invention discloses a machining technology for machining hot-rolled wire rods into straight silver bright bars. The machining technology comprises the technological steps of feeding, uncoiling, pre-straightening, sizing, peeling, grinding and saw cutting. According to the machining technology, related machining devices are distributed along a horizontal line, the requirement for reducing the process is met, an annealing technology is omitted, a straightening technology is conducted for one less time, and the production cost is reduced; a straightening function is achieved through a pre-straightening machine, a sizing machine and an eight-roll material pulling machine, peeling is conducted through a peeling machine, and the straightness reaches 2%.; the stress condition of the wire rodsis changed by decreasing the diameter of the wire rods through the sizing machine, the peeling allowance is decreased, and the material utilization rate is increased; the internal stress condition ofthe wire rods is changed through the sizing process; resilience generated after straightening is inhibited through plastic deformation; and no annealing technology is adopted, the lamellar pearlite structure of a hot-rolled material is retained, induction hardening and tempering are adopted in the following process, and carbides are distributed more uniformly after hardening and tempering.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to a processing technology for processing hot-rolled wire rods into straight silver bright rods. Background technique [0002] Processing from hot-rolled wire rods to bright silver bars, the current scheme generally includes hot-rolled wire rods undergoing softening annealing, uncoiling, straightening, stress relief annealing, straightening, peeling, calendering and other processes or annealing softening, drawing, Stress relief annealing, straightening, peeling, calendering and other processes. [0003] The existing processing technology of hot-rolled wire rod into silver bright bar needs to be completed in several production lines, the process is cumbersome, the process needs to be annealed twice in the process, the cost is high, and the material yield is low, and the existing processing technology has changed The microstructure of hot-rolled wire rod, after annealing, th...

AI Technical Summary

Problems solved by technology

[0003] The existing processing technology of hot-rolled wire rod into silver bright bar needs to be completed in several production lines, the process is cumbersome, the process needs to be annealed twice in the process, the cost is high, and the material yield is low, and the existing processing technology has changed The microstructure of hot-rolled wire rod, after annealing, the microstructure of hot-rolled wire rod changes from flaky pearlite to granular pearlite, which is not conducive to induction quenching and tempering

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