Drawing method and wire produced by said drawing method

A technology of wire and steel wire, applied in the field of steel wire, can solve the problem of high cost of stainless steel and achieve the effect of improving durability

Active Publication Date: 2016-10-05
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of high weight content of chromium, the cost of stainless steel is very high

Method used

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  • Drawing method and wire produced by said drawing method
  • Drawing method and wire produced by said drawing method
  • Drawing method and wire produced by said drawing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0090] Embodiments of tires according to the invention

[0091] figure 1 A tire comprising a thread obtained by the method according to the invention is shown and indicated by the general reference 10 .

[0092] The tire 10 has a crown 12 reinforced by a crown reinforcement 14 , two sidewalls 16 and two beads 18 , each of these beads 18 reinforced by a bead wire 20 . The crown 12 is covered with a tread, not shown in this illustration. The carcass reinforcement 22 is wound around the two bead wires 20 in each bead 18 and comprises a turnup 24 positioned towards the exterior of the tire 10 , shown here mounted on a rim 26 .

[0093] The carcass reinforcement 22 itself consists, in a known manner, of at least one ply reinforced with threads or cords. These threads or cords of the carcass reinforcement are called "radial" threads or cords, that is to say they are positioned practically parallel to each other and extend from one bead to the other so as to be aligned with the ce...

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Abstract

The invention relates to a steel wire comprising an entirely ferritic, pearlitic or ferritic-pearlitic microstructure, said steel wire having a carbon level by mass C such that 0.05% <= C < 0.4%, and a chromium level by mass Cr such that Cr < 12 %. The method for drawing the wire comprises: a first uninterrupted series of steps (4001-400m) of drawing the wire of a diameter D to a diameter d'; at least one second uninterrupted series of steps (7001-700m) of drawing the wire of a diameter d' to a diameter d; and at least one intermediate step between the first and second uninterrupted steps (4001-400m, 7001-700m) of drawing the wire, the wire having a temperature which is lower than or equal to 300 DEG C during the or each intermediate step.

Description

technical field [0001] The invention relates to a method for drawing steel wires and to steel wires, in particular for tires. Background technique [0002] A tire having a carcass reinforcement, such as a radial carcass reinforcement, consists of a tread, two inextensible beads, two sidewalls connecting the beads to the tread, and a crown reinforcement, the crown The reinforcement is disposed circumferentially between the carcass reinforcement and the tread. [0003] The crown and / or carcass reinforcement comprises one or more rubber plies, optionally composed of reinforcing elements or reinforcements (such as individual wires or metal cords derived from an assembly of several individual wires) And enhanced. The metal reinforcement is made of steel. [0004] The crown reinforcement usually consists of at least two superimposed crown plies, usually called "working" plies or "crossing" plies (usually metallic), the reinforcing cords of which are arranged so that They are p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/06D07B1/06B60C9/00
CPCB60C9/0007C21D8/065D07B2205/3035D07B2205/3042D07B2205/305C21D9/52D07B1/066C21D2211/005C21D2211/009C22C38/001C22C38/002C22C38/02C22C38/04C22C38/44C22C38/46C22C38/52C22C38/54C22C38/58D07B2801/10B60C2009/0085
Inventor A·费力内L·布赫O·吉鲁
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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