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A manufacturing method for producing industrial pure titanium plates by secondary annealing in a plate rolling mill

A technology of secondary annealing and industrial pure titanium, applied in metal rolling and other directions, can solve the problems of poor surface quality and performance of titanium plates, low investment and production costs, and achieve the goal of improving performance quality, reducing production costs and saving social investment. Effect

Active Publication Date: 2018-06-05
GUANGDONG POLYTECHNIC NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a manufacturing method for industrially pure titanium plates produced by secondary annealing in a medium-thickness rolling mill, which solves the problem that the surface quality and performance of titanium plates are poor in the production of medium-thickness titanium plates, which usually adopts primary annealing after rolling. The problem of using the present invention to produce medium-thick titanium plates has low investment and production costs, high production efficiency, good surface quality, and performance that meets and exceeds the requirements of national standards.

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  • A manufacturing method for producing industrial pure titanium plates by secondary annealing in a plate rolling mill
  • A manufacturing method for producing industrial pure titanium plates by secondary annealing in a plate rolling mill
  • A manufacturing method for producing industrial pure titanium plates by secondary annealing in a plate rolling mill

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Embodiment 1

[0025] The invention discloses a manufacturing method for producing industrially pure titanium plates by secondary annealing in a plate rolling mill. The chemical composition and content of the forging billet are: Fe is 0.03wt%, C is 0.013wt%, N is 0.005wt%, H is 0.001wt%, O is 0.07wt%, P is 0.012wt%, S is 0.002wt% %, the rest is Ti and unavoidable impurities. The hot rolling process is as follows: the forged billet with a thickness of 150mm and a width of 1200mm is placed in the preheating section of the heating furnace at 450°C for 55min, the heating section is at 950°C, the heating time is 160min, the temperature in the soaking section is 930°C, and the soaking time is 65min. In the soaking section, the temperature of the lower surface of the billet is controlled to be 10°C higher than the temperature of the upper surface, the temperature of the heating furnace is 925°C, and a 2800mm four-roll reversing rolling mill is used for 11 passes of reciprocating rolling, and the ro...

Embodiment 2

[0031] The invention discloses a manufacturing method for producing industrially pure titanium plates by secondary annealing in a plate rolling mill. The chemical composition and content of the forging billet are: Fe is 0.03wt%, C is 0.013wt%, N is 0.005wt%, H is 0.001wt%, O is 0.07wt%, P is 0.012wt%, S is 0.002wt% %, the rest is Ti and unavoidable impurities. The hot rolling process is as follows: the forged billet with a thickness of 150mm and a width of 1200mm is placed in the preheating section of the heating furnace at 400°C for 60min, the heating section is at 900°C, the heating time is 150min, the temperature in the soaking section is 920°C, and the soaking time is 60min. In the soaking section, the temperature of the lower surface of the billet is controlled to be 10°C higher than the temperature of the upper surface, the temperature of the heating furnace is 910°C, and a 2800mm four-roll reversing rolling mill is used for 13 passes of reciprocating rolling, and the ro...

Embodiment 3

[0037] The invention discloses a manufacturing method for producing industrially pure titanium plates by secondary annealing in a plate rolling mill. The chemical composition and content of the forging billet are: Fe is 0.035wt%, C is 0.017wt%, N is 0.004wt%, H is 0.001wt%, O is 0.018wt%, P is 0.011wt%, S is 0.003wt% %, the rest is Ti and unavoidable impurities. The hot rolling process is as follows: the forged billet with a thickness of 220mm and a width of 1200mm is placed in the preheating section of the heating furnace at 500°C for 40min, the heating section is at 950°C, the heating time is 200min, the temperature in the soaking section is 940°C, and the soaking time is 90min. In the soaking section, the temperature of the lower surface of the billet is controlled to be 10°C higher than the temperature of the upper surface, the temperature of the heating furnace is 940°C, and a 2800mm four-roll reversing rolling mill is used for 13 passes of reciprocating rolling, and the ...

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Abstract

The invention discloses a manufacturing method for producing a commercial pure titanium plate by adopting double annealing of a heavy and medium plate mill. The method comprises sequentially conducted steps of carrying out blank casting, forging, billet heating, phosphorous removal, rolling, cooling, annealing and post-treatment; carrying out forging operation to obtain billets; carrying out milling operation to obtain a titanium plate of which the thickness is 9-40mm, wherein annealing comprises first annealing and second annealing, which are successively carried out; annealing treatment of 1-2 hours is carried out on the titanium plate at 600-700 DEG C during first annealing; and annealing treatment of 1-2 hours is carried out on the titanium plate which is subjected to first annealing treatment and cooled to a room temperature at 600-700 DEG C during second annealing. The invention aims at providing the manufacturing method for producing the commercial pure titanium plate by adopting double annealing of the heavy and medium plate mill. The heavy and medium titanium plate is produced by adopting the manufacturing method, the investment and production cost is low, the production efficiency is high, the surface quality is good and the performance meets the national standard requirements and is higher than the national standard requirements.

Description

technical field [0001] The invention relates to the technical field of manufacturing non-ferrous metal materials, in particular to a manufacturing method for producing industrial pure titanium plates by secondary annealing in a plate rolling mill. Background technique [0002] Industrial pure titanium has excellent corrosion resistance, good mechanical properties and welding properties. It can be used as an important corrosion-resistant structural material and is widely used in chemical equipment, coastal power generation equipment, seawater desalination devices and ship parts. It is a titanium that is vigorously developed in my country. one of the materials. The application of titanium and titanium alloys on ships is mainly based on the following characteristics of titanium alloys: a wide range of strength, excellent mechanical properties, unique physical properties (including magnetic properties), high specific strength and structural effectiveness , Excellent corrosion re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22F1/18B21B1/34
CPCB21B1/34B21B2201/06B21B2265/10C22C14/00C22F1/183
Inventor 高吉祥
Owner GUANGDONG POLYTECHNIC NORMAL UNIV
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