Method for producing significant-purpose steel wire for manufacturing rope

Abstract

The invention relates to a method for producing a significant-purpose steel wire for manufacturing a rope. The method comprises the following production processes: coiling, performing acid pickling rusting, pulling a half-finished product, performing EDC coiling, pulling a finished product steel wire, and inspecting the steel wire, and comprises the following production steps: (1) after the half-finished product is pulled, performing EDC coiling, soaking a coiled strip in an austenite state into water and cooling rapidly, thereby obtaining austenite texture, wherein the austenite rate is 85-95%; and (2) according to a Linhof equation as shown in the specification, enabling the strength of the finished product steel wire and the strength of a raw material are in a linear relationship, wherein the pull resistance sigma c of the EDC coiled strip is 1050-1120Mpa. The method has the advantages that the experiment shows that the significant-purpose steel wire which is pulled by using the method and is used for manufacturing the rope can meet relevant requirements in the national standard (YB / T5343-2009). The technical indexes of the product completely meet the national standard and use requirements.

Description

technical field [0001] The invention relates to a method for producing important-purpose steel wires for rope making. Background technique [0002] Important-purpose steel wires for rope making are mainly used to produce important-purpose steel wire ropes according to GB8918 standards. Because the use of important-purpose steel wire ropes is more critical than general-purpose steel wire ropes, the performance requirements for steel wires are very high. [0003] Traditionally, the production process of important-purpose steel wire for rope making is as follows: [0004] Wire rod → pickling and rusting → semi-finished product drawing → heat treatment, lead bath treatment → finished product, some small and medium diameter varieties also need secondary semi-finished product drawing and heat treatment. From the perspective of the entire process above, there are disadvantages such as long product manufacturing cycle, high labor and logistics costs, and high consumption. [0005]...

AI Technical Summary

Problems solved by technology

From the perspective of the entire process above, there are disadvantages such as long product manufacturing cycle, high labor and logistics costs, and high consumption.

[0005] In the field of production of general-purpose steel wire and spring steel wire for rope making, there is also a process of direct drawing of ordinary wire rods to produce finished steel wires. However, due to the uneven metallographic structure of ordinary hot-rolled wire rods and the low sorbite rate, There is a large amount of pearlite structure, and there is a certain amount of reticular ferrite (hypoeutectoid steel) or reticular cementite (hypereutectoid steel), and the finished steel wire obtained after direct drawing generally has low strength, bending And the torsion index cannot meet the requirements of the national standard, and the comprehensive performance is unstable; in addition, due to the limitation of the traditional hot rolling process, the surface of the wire rod is prone to decarburization, which reduces the wear resistance of the steel wire

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