Process for annealing cold rolled pure titanium and titanium alloy roll by continuous bright annealing furnace

A titanium alloy coil and annealing furnace technology, applied in furnaces, heat treatment furnaces, manufacturing tools, etc., can solve the problem of high annealing temperature, and achieve the effects of fast annealing speed, accurate temperature control and high production efficiency

Inactive Publication Date: 2011-05-11
JIANGSU CHENGFEI PRECISION ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of these characteristics, pure titanium coils need to be annealed after cold rolling, and the annealing temperature is higher than the recrystallization temperature, and the cold rolling annealing process generally requires annealing to be carried out in an inert gas, but domestically produced cold-rolled pure titanium coils have not yet been used. Continuous bright annealing furnace is annealed under the condition of inert gas

Method used

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  • Process for annealing cold rolled pure titanium and titanium alloy roll by continuous bright annealing furnace
  • Process for annealing cold rolled pure titanium and titanium alloy roll by continuous bright annealing furnace

Examples

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Effect test

Embodiment 1

[0014] Depend on figure 1 It is known that a process for annealing cold-rolled pure titanium and titanium alloy coils in a continuous bright annealing furnace includes the following steps: 1) raising the temperature of the annealing furnace to 600°C, and heating the annealing furnace at 35m 3 The flow rate of / h is fed into argon to replace the air in the furnace.

[0015] 2) Put the cold-rolled TA1 titanium coil on the uncoiler of the annealing furnace, and weld the coil head of the pure titanium or titanium alloy coil and the tail of the leader.

[0016] 3) Pure titanium and titanium alloy coils first pass through the cleaning unit, and after drying, pass through the continuous bright annealing furnace at a speed of 4m / min.

[0017] 4) After the annealed pure titanium and titanium alloy coils are cooled, they are recoiled into coils on the coiler at the exit.

Embodiment 2

[0019] A process for annealing cold-rolled pure titanium and titanium alloy coils in a continuous bright annealing furnace, comprising the following steps:

[0020] 1) Raise the temperature of the annealing furnace to 850°C, and 3 The flow rate of / h is fed into argon to replace the air in the furnace.

[0021] 2) Put the cold-rolled TA15 titanium coil on the uncoiler of the annealing furnace, and weld the head of the titanium coil and the tail of the leader.

[0022] 3) The titanium coil first passes through the cleaning unit, and after drying, passes through the continuous bright annealing furnace at a speed of 3m / min.

[0023] 4) After the annealed titanium coil is cooled, it is recoiled into a coil on the coiler at the exit.

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Abstract

The invention provides a process for carrying out continuous bright annealing treatment on a cold rolled pure titanium and titanium alloy belt roll by a continuous bright annealing furnace, which comprises the following steps of: placing a pure titanium and titanium alloy roll on a decoiling machine, welding a belt head of the titanium roll with a belt tail of a leading belt and repeatedly and continuously annealing; sequentially cleaning and drying at the speed of 2-6m per minute according to the difference of roll thickness and finally leading into a continuous bright annealing furnace; filling argon as inert protective gas into the annealing furnace, wherein the argon flow is 30-50m<3> per hour, and the annealing temperature is 600-950 DEG C; after cooling, leading out of an outlet of the annealing furnace and recoiling into a roll on a coiling machine of the outlet. The invention has the advantages of high annealing speed, high productivity, precise temperature control, and the like and solves the problems of poor physical and chemical performance of products, increased hardness, reduced plasticity and elasticity, and the like caused by the reason that an annealed product is easy to generate a surface polluted layer.

Description

technical field [0001] The invention relates to a process for annealing cold-rolled pure titanium and titanium alloy coils in a continuous bright annealing furnace, in particular to an annealing method for cold-rolled pure titanium and titanium alloy coils with low oxygen content. Background of the invention [0002] Due to its unique properties such as high specific strength and biocompatibility, industrial pure titanium has shown great application potential in the field of biomedicine, so it has attracted increasing attention. Pure titanium crystals have an allotropic structure, and below 882 ° C, it is close-packed. Hexagonal structure, less slip system, significant cold deformation strengthening effect, and obvious anisotropy; the recrystallization temperature of pure titanium after cold deformation is between 450 ° C and 550 ° C according to the difference in impurity composition and cold deformation rate; the chemical properties of titanium Lively, it is easy to react ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/18C21D9/56
Inventor 朱建平
Owner JIANGSU CHENGFEI PRECISION ALLOY
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