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Preparation method of titanium steel composite board reducing end part downwards-buckling during rolling

A technology of clad plate and clad slab, applied in the field of titanium alloy rolling, can solve the problems of rolling interruption, impact fracture of stand guard, impact of stand guard, etc.

Inactive Publication Date: 2012-05-09
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the process of hot rolling, it often happens that the end of the composite plate is bent and buckled after passing through the rolls of the rolling mill, and then severely impacts the frame guard plate located behind the rolls. Frequent multiple impacts will cause the frame The guard plate is easily broken by impact, which leads to the interruption of rolling, which seriously hinders the continuous operation of rolling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 specification is the rolling of 100mm * 2070mm * 1500mm titanium-steel clad plate:

[0023] 1) After the titanium-steel clad slab after explosive cladding is surface-leveled, it is pushed into a pusher type heating furnace for heating, and the heating temperature of the upper surface (titanium surface) of the clad plate located in the upper zone of the heating furnace is controlled at 820°C. The temperature of the lower surface (steel surface) of the composite plate located in the lower area of ​​the heating furnace is 920 ° C, and it is rolled after being kept for 2 hours;

[0024] 2) Before the composite slab enters the rolls of the four-high reversible hot rolling mill, it is centered by the centering device in front of the rolling mill, and then the high-pressure water dephosphorization nozzle in front of the rolling mill is used to spray water on the surface of the composite slab (titanium surface) for 5 seconds. 15°C, pressure 15MPa, flow rate 2000L / m...

Embodiment 2

[0026] Embodiment 2 specification is the rolling of 60mm * 1600mm * 1600mm titanium-steel clad plate:

[0027] 1) After the titanium-steel clad slab after explosive cladding is surface-leveled, it is pushed into a pusher type heating furnace for heating. The heating temperature of the upper surface (titanium surface) of the clad plate located in the upper zone of the heating furnace is controlled at 810°C. The temperature of the lower surface (steel surface) of the composite plate located in the lower area of ​​the heating furnace is 910°C, and it is rolled after being kept for 1.5 hours;

[0028] 2) Before the composite slab enters the rolls of the four-high reversible hot rolling mill, it is centered by the centering device in front of the rolling mill, and then the high-pressure water dephosphorization nozzle in front of the rolling mill is used to spray water on the surface of the composite slab (titanium surface) for 3 seconds. 10°C, pressure 18MPa, flow rate 2800L / min, a...

Embodiment 3

[0030] Embodiment 3 specification is the rolling of 50mm * 1600mm * 1800mm titanium-steel clad plate:

[0031] 1) After the titanium-steel clad slab after explosive cladding is surface-leveled, it is pushed into a pusher type heating furnace for heating, and the heating temperature of the upper surface (titanium surface) of the clad plate located in the upper area of ​​the heating furnace is controlled at 800°C. The temperature of the lower surface (steel surface) of the composite plate located in the lower area of ​​the heating furnace is 900°C, and it is rolled after being kept for 1.5 hours;

[0032] 2) Before the composite slab enters the rolls of the four-high reversible hot rolling mill, it is centered by the centering device in front of the rolling mill, and then the high-pressure water dephosphorization nozzle in front of the rolling mill is used to spray water on the surface of the composite slab (titanium surface) for 8 seconds. 10°C, pressure 14MPa, flow rate 2000L / ...

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Abstract

The invention discloses a preparation method of a titanium steel composite board reducing end part downwards-buckling during rolling, comprising the following steps of: before rolling, simultaneously heating an upper surface and a lower surface of an explosion-compounded titanium steel composite board blank at different temperatures, wherein the heating temperature of a titanium surface layer is 800-830DEG C, the heating temperature of a steel surface layer is 900-930DEG C and the heating time is 1-2h; after finishing the heating, uniformly spraying water for 3-10s on the titanium surface layer so as to carry out assistant water cooling before rolling each time when the titanium steel composite board blank is subjected to multiple press-in rolling; and after finishing rolling, obtaining afinished titanium steel composite board by hot straightening treatment. According to the invention, by improving the heating procedure of the titanium steel composite board before rolling and controlling the temperature in the rolling process, the phenomenon that the end part is downwards buckled during rolling is reduced, the titanium steel composite board with accurate size, favorable board shape and high surface quality can be obtained and the rolling efficiency of the composite board is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy rolling, and in particular relates to a preparation method of a titanium-steel composite plate which reduces buckling at the end during rolling. Background technique [0002] Due to the special excellent performance and cost advantages of titanium-steel composite plates, it has been widely used in electric power, petrochemical, seawater desalination, shipbuilding, pharmaceuticals, etc. The technological process of explosion-rolling titanium steel clad plate mainly includes: cutting and blanking of base material and composite material, explosive compounding, heating before rolling, rolling, and annealing after rolling. [0003] When using a four-high reversible rolling mill to roll titanium-steel clad slabs, the traditional method is: use a heating furnace to heat the explosively clad titanium-steel clad slabs to a certain temperature, and then perform multi-pass rolling through the rolling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/02
Inventor 吕利强张晓卫党鹏夏亚峰雷杨李辉王云董璞王瑞琴高维娜付文洁马宏旺张清
Owner WESTERN TITANIUM TECH