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Annealing process of cold rolled titanium roll

An annealing process, titanium coil technology, applied in the field of heat treatment of metal materials, can solve the problem of increasing material consumption and achieve the effect of short time consumption

Inactive Publication Date: 2011-04-06
SHANDONG IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after annealing, the titanium coil turns black from the edge to the inside, and needs to be trimmed, which increases the material consumption

Method used

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  • Annealing process of cold rolled titanium roll
  • Annealing process of cold rolled titanium roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Put 3.5t degreased titanium coils into the vacuum annealing furnace, and evacuate the vacuum annealing furnace to keep the vacuum degree at about 5×10 -4 Pa, then heat the titanium coil to about 620C at a heating rate of 15°C / h and hold it for 8h. Finally, the titanium coil is naturally cooled to 100°C in a vacuum annealing furnace and released. The obtained titanium coil has uniform structure and good performance.

Embodiment 2

[0019] Put 3.5t degreased titanium coils into the vacuum annealing furnace, and evacuate the vacuum annealing furnace to keep the vacuum degree at about 6.67×10 -4 Pa, then heat the titanium coil to about 700°C at a heating rate of 20C / h and hold it for 3h. Finally, the titanium coil is naturally cooled to 100°C in a vacuum annealing furnace and released. The obtained titanium coil has uniform structure and good performance.

Embodiment 3

[0021] Put 3.5t degreased titanium coils into the vacuum annealing furnace, and evacuate the vacuum annealing furnace to keep the vacuum degree at about 1×10 -3 Pa, then heat the titanium coil to about 670°C at a heating rate of 18C / h and hold it for 5h. Finally, the titanium coil is naturally cooled to 100°C in a vacuum annealing furnace and released. The obtained titanium coil has uniform structure and good performance.

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Abstract

The invention discloses an annealing process of a cold rolled titanium roll. The process comprises the following steps of: loading a titanium roll with a clean surface into a vacuum annealing furnace; vacuumizing the vacuum annealing furnace so as to maintain the vacuum degree of the vacuum annealing furnace in the range of between 1*10<-4> and 9*10<-3>Pa; heating the titanium roll to the temperature of between 620 and 700 DEG C, and preserving heat for 3 to 8h; and cooling the titanium roll to the temperature of 100 DEG C, and taking the titanium roll out. The annealing process takes short time, and the titanium roll treated by the annealing process has uniform organization and high property.

Description

technical field [0001] The invention belongs to the field of heat treatment of metal materials, and in particular relates to an annealing process of cold-rolled titanium coils. Background technique [0002] The chemical properties of titanium are active, and it is easy to react with elements such as O, N, and H in the air at high temperatures, thereby forming a surface pollution layer on the surface, deteriorating physical and chemical properties, increasing hardness, reducing plasticity and elasticity, and increasing brittleness. Therefore, in order to facilitate machining and obtain titanium with certain properties to meet the material performance requirements of various products, heat treatment of titanium is required. In view of the above characteristics, the titanium coil is usually annealed after cold rolling to eliminate work hardening. The annealing process of cold-rolled titanium coils generally requires annealing in an inert gas protective atmosphere. However, af...

Claims

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Application Information

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IPC IPC(8): C22F1/18
Inventor 杨旭尹翠兰周平王超汤化胜商玉华李四军厉文超孙建卫李建省路峰
Owner SHANDONG IRON & STEEL CO LTD
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