CN102051566A

CN102051566A - Process for annealing cold rolled pure titanium and titanium alloy roll by continuous bright annealing furnace

Info

Publication number: CN102051566A
Application number: CN 201110003672
Authority: CN
Inventors: 朱建平
Original assignee: JIANGSU CHENGFEI PRECISION ALLOY CO Ltd
Current assignee: JIANGSU CHENGFEI PRECISION ALLOY CO Ltd
Priority date: 2011-01-10
Filing date: 2011-01-10
Publication date: 2011-05-11
Anticipated expiration: 2031-01-10
Also published as: CN102051566B

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

With continuous bright annealing furnace cold rolling pure titanium, titanium alloy are involved in capable annealed technology

Technical field

The present invention relates to a kind of continuous bright annealing furnace to cold rolling pure titanium, titanium alloy volume annealed technology, is the method for annealing of the cold rolling pure titanium of a kind of low oxygen content, titanium alloy volume specifically.

Background of invention

Industrially pure titanium is owing to have special performances such as high specific strength and biocompatibility, show huge application potential at biomedical sector, thereby receive publicity day by day, pure titanium crystal has the structure of ppolymorphism, it below 882 ℃ close-packed hexagonal structure, slip system is few, and cold working working hardening effect is remarkable, and anisotropy is obvious; Pure titanium through cold deformation is different different with the cold deformation rate according to impurity component, and recrystallization temperature is between 450 ℃ ~ 550 ℃; Titanizing character is active, at high temperature reacts with elements such as airborne O, N, H easily, thereby forming surface contamination layer, makes the physicochemical property variation, and hardness increases, and plasticity, elasticity reduce, and fragility increases.At these characteristics, need to carry out anneal after pure titanium roll is cold rolling, annealing temperature is higher than recrystallization temperature, and the annealing of cold rolled annealed technology general requirement is carried out in rare gas element, but the cold rolling pure titanium roll of domestic production also realizes using continuous bright annealing furnace to anneal being connected with under the situation of rare gas element.

For guaranteeing that the aircraft housing construction has enough strength and stiffness, and alleviate texture quality, adopt specific tenacity, material that specific rigidity is high usually.The structure formation that the aircraft housing construction is commonly used has covering skeleton construction, integral panel structure, honeycomb interlayer or stuffing sandwich structure, punching press shell structure etc.In recent years, the existing subsonic velocity of the flight velocity of aircraft is to supersonic velocity even hypersonic development.When Mach 2 ship 2 ~ 3, the aircraft surface temperature can reach 200 ~ 300 ℃.For this reason, many structures of aircraft, select titanium alloy in a large number for use as housing, fuel container, uptake, empennage and nose cone skeleton etc., highlight all the more as the importance of covering skeleton construction, integral panel structure, honeycomb interlayer or stuffing sandwich structure, the raw-material titanium or titanium alloy light sheet of punching press shell structure.

Summary of the invention

For solving the shortcoming of existing pure titanium, titanium alloy volume annealing existence, the object of the present invention is to provide a kind of continuous bright annealing furnace to cold rolling pure titanium, titanium alloy volume annealed technology, the pure titanium in annealing back, titanium alloy are rolled up surperficial non-oxidation layer, cut down the consumption of energy.

The objective of the invention is to be achieved through the following technical solutions: a kind ofly cold rolling pure titanium, titanium alloy are involved in capable annealed technology with continuous bright annealing furnace, 4), cooling 3), annealing 2), blowing 1), annealing furnace heats comprise with scavenging solution and annealing that concrete steps are as follows::::: it is characterized in that to the cleaning of pure titanium, titanium alloy volume and with continuous bright annealing furnace:

1), annealing furnace is heated: the furnace temperature of continuous bright annealing furnace is risen to 600 ~ 950 ℃, and heat-up rate is 50 ~ 100 ℃/h, simultaneously with 30 ~ 50m ³The flow of/h feeds argon gas in the annealing furnace, to substitute the air in the stove.

2), blowing: at first cleaning dries up back and rolling through cleaning machine with the pure titanium after cold rolling, titanium alloy, is placed on the annealing furnace reeling machine, and will rolls up the magnetic tape trailer welding of head and leader tape;

Described cold rolling pure titanium, titanium alloy volume are TA0, TA1, TA2, TA3, TA15, TC4.

3), annealing: is that 2 ~ 6m/min pass through continuous bright annealing furnace according to the difference of product thickness with speed with pure titanium, titanium alloy volume.

4) cooling: the pure titanium after the annealing, titanium alloy volume are after cooling, and rewinding is a coiled material on the reeling machine in exit.

The present invention has advantages such as annealing speed is fast, production efficiency is high, temperature control is accurate.And solved the product after the annealing and be easy to generate surface contamination layer, and caused product physicochemical property variation, hardness increases, problems such as plasticity, elasticity reduction.

Description of drawings

Fig. 1 is a process flow sheet of the present invention.

Embodiment

Embodiment 1

Know that by Fig. 1 a kind of continuous bright annealing furnace may further comprise the steps cold rolling pure titanium, titanium alloy volume annealed technology: 1) annealing furnace is warming up to 600 ℃, and with 35m ³The flow of/h feeds argon gas, to substitute the air in the stove.

2) with cold rolling good TA1 titanium volume, be placed on the annealing furnace Abrollhaspel, and the volume head of pure titanium, titanium alloy volume and the magnetic tape trailer of leader tape are welded.

3) pure titanium, titanium alloy volume dry up the back and pass through continuous bright annealing furnace with the speed of 4m/min at first through cleaning unit.

4) the pure titanium after the annealing, titanium alloy volume are after cooling, and rewinding is a coiled material on the reeling machine in exit.

Embodiment 2

A kind of continuous bright annealing furnace may further comprise the steps cold rolling pure titanium, titanium alloy volume annealed technology:

1) annealing furnace is warming up to 850 ℃, and with 40m ³The flow of/h feeds argon gas, to substitute the air in the stove.

2) with cold rolling good TA15 titanium volume, be placed on the annealing furnace Abrollhaspel, and the volume head of titanium volume and the magnetic tape trailer of leader tape are welded.

3) the titanium volume dries up the back and passes through continuous bright annealing furnace with 3m/min speed at first through cleaning unit.

4) volume of the titanium after the annealing is after cooling, and rewinding is a coiled material on the reeling machine in exit.

Claims

1. one kind is involved in capable annealed technology with continuous bright annealing furnace to cold rolling pure titanium, titanium alloy, 4), cooling 3), annealing 2), blowing 1), annealing furnace heats comprise with scavenging solution and annealing that concrete steps are as follows::::: it is characterized in that to the cleaning of pure titanium, titanium alloy volume and with continuous bright annealing furnace:

1), annealing furnace heats: annealing furnace is warming up to 600 ~ 950 ℃, and heat-up rate is 50 ~ 100 ℃/h, and with 30 ~ 50m ³The flow of/h feeds argon gas in the annealing furnace, to substitute the air in the stove;

2), blowing: with the pure titanium after cold rolling, titanium alloy volume, be placed on the annealing furnace reeling machine, and the volume head of pure titanium, titanium alloy volume and the magnetic tape trailer of leader tape are welded;

3), annealing: pure titanium, titanium alloy volume pass through continuous bright annealing furnace at first through cleaning unit after drying up;

2. continuous bright annealing furnace according to claim 1 involves in capable annealed technology to cold rolling pure titanium, titanium alloy, it is characterized in that: step 2) in, described cold rolling pure titanium, titanium alloy volume are TA0, TA1, TA2, TA3, TA15, TC4.