Warm-rolling process method of titanium alloy thin plate

A processing method and titanium alloy technology, applied in metal rolling and other directions, can solve the problems of plate surface pits, slag inclusions, high deformation resistance of titanium alloys, and affect the surface quality of finished products, so as to increase the amount of deformation in passes and promote crystallization. particle crushing and increase the cumulative deformation rate

Active Publication Date: 2013-02-13
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high deformation resistance of titanium alloy, the work hardening is fast during rolling, and it needs to undergo multiple intermediate heat treatments before it can be cold rolled again. The rolling cycle is long and the production efficiency is low.
Moreover, edge crack

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The warm rolling processing method of the titanium alloy thin plate of the present embodiment comprises the following steps:

[0023] Step 1. Place the annealed TC4 titanium alloy sheet with a thickness of 4mm in a heating furnace for heating at a heating temperature of 380°C for 14 minutes;

[0024] Step 2. Preheating the rolls of the rolling mill to a temperature of 50° C., and then moving the heated TC4 titanium alloy plate in step 1 to the preheated rolling mill for unidirectional warm rolling in two rolling passes. The specific process is: Firstly, the heated TC4 titanium alloy plate is warm rolled in the first rolling process, and the thickness of the plate is rolled from 4mm to 2.2mm. mm, 0.15mm, 0.15mm, 0.1mm, 0.05mm, 0.05mm, the cumulative deformation rate is 45%, and then the TC4 titanium alloy plate after rolling is carried out intermediate annealing treatment and reheating, the temperature of the described intermediate annealing treatment is 780°C, the time...

Embodiment 2

[0028] The warm rolling processing method of the titanium alloy thin plate of the present embodiment comprises the following steps:

[0029] Step 1. Place the annealed TA15 titanium alloy plate with a thickness of 5mm in a heating furnace for heating at a heating temperature of 400°C for 10 minutes;

[0030] Step 2. Preheat the rolls of the rolling mill to a temperature of 60° C., and then move the heated TA15 titanium alloy plate in step 1 to the preheated rolling mill for unidirectional warm rolling in two rolling passes. The specific process is: First, the heated TA15 titanium alloy plate is subjected to warm rolling in the first rolling process, so that the thickness of the TA15 titanium alloy plate is rolled from 5mm to 2.9mm, and the deformation of each pass is: 0.25mm, 0.25mm, 0.25mm, 0.2mm, 0.2mm, 0.2mm, 0.15mm, 0.15mm, 0.15mm, 0.1mm, 0.1mm, 0.05mm, 0.05mm, the cumulative deformation rate is 42%, and then intermediate annealing is performed on the rolled TA15 titanium ...

Embodiment 3

[0034] The warm rolling processing method of the titanium alloy thin plate of the present embodiment comprises the following steps:

[0035] Step 1. Place the annealed TC2 titanium alloy plate with a thickness of 4.5mm in a heating furnace for heating at a heating temperature of 350°C for 12 minutes;

[0036]Step 2. Preheating the rolls of the rolling mill to a temperature of 30° C., and then moving the heated TC2 titanium alloy plate in step 1 to the preheated rolling mill for unidirectional warm rolling in three rolling passes. The specific process is: Firstly, the heated TC2 titanium alloy sheet is subjected to warm rolling in the first rolling process, and the thickness of the TC2 titanium alloy sheet is rolled from 4.5mm to 2.3mm, and the deformation of each pass is: 0.3mm, 0.3mm, 0.25mm , 0.25mm, 0.2mm, 0.2mm, 0.15mm, 0.15mm, 0.1mm, 0.1mm, 0.1mm, 0.05mm, 0.05mm, the cumulative deformation rate is 48.9%; Intermediate annealing treatment and reheating, the temperature of ...

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Abstract

The invention provides a warm-rolling process method of a titanium alloy thin plate and comprises the following steps: firstly, heating a titanium alloy thin plate with a certain thickness up to 300-400 DEG C; secondly, preheating a roller of a rolling mill to 30-60 DEG C; warm-rolling the heated titanium alloy plate for 1-3 turns, and obtaining the rolled slab; and thirdly, orderly performing the finished product annealing, acid washing and fixed-dimensional shearing, obtaining the titanium alloy thin plate with the thickness of 1.2-3 mm. In the invention, the titanium alloy plate is delivered to the preheated rolling mill after being heated within the temperature scale of lower than the recrystallization temperature, in order to perform the warm-rolling; compared with the cold-rolling process technique, the invention can slow down the hardening rate of the titanium alloy, improve the accumulated deformation rate of the rolling turn, reduce the intermediate heat treatment frequency, shorten the production cycle and improve the working efficiency; meanwhile, the method can effectively prevent edge crack, slag at head and tail parts and micro-crack, and improve the surface quality; the invention is easy to control, simple and convenient to operate and applicable to the industrial production on a large scale.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material processing, and in particular relates to a warm rolling processing method of a titanium alloy thin plate. Background technique [0002] Titanium and titanium alloys have high specific strength, good corrosion resistance and biocompatibility, so they are widely used in aerospace, marine, shipbuilding, automobile, petrochemical and biological engineering and other fields. With the development of industrial technologies such as aviation, aerospace and ships, the demand for titanium alloy sheets is increasing, and at the same time, higher requirements are put forward for the dimensional accuracy, surface quality, plate shape and organizational properties of titanium alloy sheets. Due to the high deformation resistance of titanium alloy, the work hardening is fast during rolling, and it needs to undergo multiple intermediate heat treatments before it can be cold rolled again. The rollin...

Claims

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Application Information

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IPC IPC(8): B21B3/00C22F1/18
Inventor 付文杰高维娜党鹏谢英杰王瑞琴吴晓东李辉张清吕利强
Owner WESTERN TITANIUM TECH
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