Method for manufacturing commercial pure titanium plate through twice-heating production process by using heavy and medium plate mill

A technology of industrial pure titanium and manufacturing method, applied in the direction of metal rolling, etc., can solve the problems of surface quality, poor structure performance, high production efficiency, low investment and production cost, etc., to improve surface quality, improve performance quality, reduce production cost effect

Active Publication Date: 2017-05-10
GUANGDONG POLYTECHNIC NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a manufacturing method for producing industrial pure titanium plates using the second-fire process of medium-thick plate rolling mills, which solves the problems of relatively poor surface quality and microstructure in the production of medium-thick titanium plates. The scheme of the present invention produces medium-thick titanium plates with 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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  • Method for manufacturing commercial pure titanium plate through twice-heating production process by using heavy and medium plate mill
  • Method for manufacturing commercial pure titanium plate through twice-heating production process by using heavy and medium plate mill

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Embodiment 1

[0021] The invention discloses a manufacturing method for producing industrially pure titanium plates by adopting a medium-thick plate mill two-firing process. The chemical composition and content of the forging billet are: Fe is 0.01wt%, C is 0.04wt%, N is 0.002wt%, H is 0.004wt%, 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 200min, 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 blank is controlled to be 10°C higher than the temperature of the upper surface, and the exit temperature of the heating furnace is 910°C. After exiting the heating furnace, high-pressure water dephosphorization is carried out...

Embodiment 2

[0029] The invention discloses a manufacturing method for producing industrially pure titanium plates by adopting a medium-thick plate mill two-firing process. 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 500°C for 40min, the heating section is at 950°C, the heating time is 150min, the temperature in the soaking section is 940°C, and the soaking time is 90min. The exit temperature of the heating furnace is 935°C. In the soaking section, the lower surface temperature of the billet is controlled to be 10°C higher than the upper surface temperature. After leaving the heating furnace, high-pressure water dephosphorization is carried out. The dephosphor...

Embodiment 3

[0038] The invention discloses a manufacturing method for producing industrially pure titanium plates by adopting a medium-thick plate mill two-firing process. The chemical composition and content of the forging billet are: Fe is 0.02wt%, C is 0.017wt%, N is 0.004wt%, H is 0.001wt%, O is 0.06wt%, 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 150mm and a width of 1200mm is placed in the preheating section of the heating furnace at 460°C for 50min, the heating section is at 950°C, the heating time is 200min, the temperature in the soaking section is 930°C, and the soaking time is 60min. The exit temperature of the heating furnace is 935°C. After exiting the heating furnace, high-pressure water dephosphorization is carried out. The dephosphorization pressure is 12MPa. The end temperature is ≥650°C, and the pressing conditions of each pass are shown in Table 5 below:

[0039...

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Abstract

The invention discloses a method for manufacturing a commercial pure titanium plate through a twice-heating production process by using a heavy and medium plate mill. The method sequentially comprises the following steps of casting a blank, forging, primarily heating, primarily dephosphorizing, primarily rolling, cooling, secondarily heating, secondarily dephosphorizing, secondarily rolling, annealing, and postprocessing; the blank is obtained after the forging operation; an intermediate slab with the thickness of 35-60 mm is obtained after the primary rolling operation, and the titanium plate with the thickness of 9-40 mm is obtained after the secondary rolling. The invention aims at providing the method for manufacturing the commercial pure titanium plate through the twice-heating production process by using the heavy and medium plate mill. The problems of relatively low surface quality and structure property of the heavy and medium titanium plate in the one-time heating production are solved, and if the scheme is adopted to produce the heavy and medium titanium plate, the invested production cost is low, the production efficiency is high, the surface quality is high, and the property meets and is higher than the national standard requirement.

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 adopting a medium-thick plate rolling mill second-fire forming process. Background technique [0002] Because titanium and titanium alloy materials have excellent comprehensive properties such as low density, high specific strength, corrosion resistance, and good structural stability, titanium and titanium alloy materials have developed rapidly in recent decades. my country's titanium industry began in the 1960s with the requirements of national defense and military industry. After 50 years of development, it has made great achievements. At present, titanium processing materials are widely used in aviation, aerospace, shipbuilding, metallurgy, chemical industry, equipment, medical treatment, pharmaceuticals, and marine engineering. , sports and leisure and other fields have be...

Claims

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Application Information

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