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Method for the heat treatment of steel reinforcement element for tyres

A technology for reinforcing elements and tires, applied in the field of steel reinforcing elements, can solve problems such as cumbersome control, and achieve the effects of eliminating turbulence, easy control, and eliminating surface defects

Active Publication Date: 2016-10-12
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, the control of the process is relatively cumbersome

Method used

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  • Method for the heat treatment of steel reinforcement element for tyres
  • Method for the heat treatment of steel reinforcement element for tyres
  • Method for the heat treatment of steel reinforcement element for tyres

Examples

Experimental program
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Embodiment Construction

[0087] Example of a thermal treatment facility for carrying out the method according to the invention

[0088] figure 1 Represented is a first embodiment of a plant for the thermal treatment of reinforcing elements of tyres, denoted by reference numeral 10 .

[0089] The processing facility 10 is capable of processing steel reinforcing elements F, here steel wires. The steel wire F has a diameter of 0.5 to 5.5 mm, preferably 0.7 to 3 mm, more preferably 1 to 2.5 mm.

[0090] In the direction of travel of the elements F in the installation 10, from upstream to downstream, the installation 10 comprises upstream means 12 for storing the elements F, means 14 for heating the elements F, means 15 for maintaining the temperature of the elements F, means for A facility 16 for cooling the elements F and a downstream device 18 for storing the heat-treated elements F.

[0091] The upstream storage device 12 and the downstream storage device 18 each respectively comprise a reel for sto...

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Abstract

The invention relates to a method for the heat treatment of a steel reinforcement element (F) for tyres, comprising a transformation of the microstructure of the steel. According to said method, the temperature of the reinforcement element (F) is lowered during the transformation of the microstructure of the steel simultaneously extracting calories from the reinforcement element (F) and supplying calories to the reinforcing element (F).

Description

technical field [0001] The invention relates to a method for the heat treatment of steel reinforcing elements of tyres. Background technique [0002] A method for manufacturing steel reinforcing elements, such as steel wires, for tires is known from the prior art. [0003] Said manufacturing method enables the manufacture of wires with a diameter between 0.08 mm and 0.50 mm that can be used for the reinforcing ply of a tyre, from wires with an initial diameter between 4.5 and 7.5 mm, called wires. [0004] First, the wires of the predominantly pearlitic microstructure are drawn, for example in a dry environment, thereby reducing their initial diameter to an intermediate diameter (for example equal to 1.3 mm). At the end of this drawing step, the steel of the wire has a microstructure comprising several mixed phases. [0005] Next, the wires with intermediate diameters are heat treated to change the microstructure of the steel. In this case, the predominantly pearlitic mic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/573
CPCC21D9/5732C21D8/06C21D9/525C21D9/56C21D9/62C21D1/40C21D9/34C21D9/52B60C9/0007
Inventor P·莫里佐E·福舍B·勒诺E·乔林
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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