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Furnace quick warming method for two-stage solution of aluminum alloy

A two-stage solid solution and aluminum alloy technology, which is applied in the field of non-ferrous metal materials and their thermal processing, can solve the problems of not being able to achieve two-stage solid solution, reduce production efficiency, and prolong the solid solution time, so as to improve solid solution production efficiency, Easy operation, recrystallization suppression effect

Inactive Publication Date: 2018-02-06
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing two-stage solid solution heating method generally directly raises the temperature of the furnace gas to the solid solution temperature. At this time, the temperature of the aluminum alloy material will be far lower than the solid solution temperature, and the effect of the two-stage solid solution cannot be achieved.
At the same time, if the heating rate is too slow, the solid solution time will be greatly prolonged and the production efficiency will be reduced.

Method used

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  • Furnace quick warming method for two-stage solution of aluminum alloy
  • Furnace quick warming method for two-stage solution of aluminum alloy
  • Furnace quick warming method for two-stage solution of aluminum alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The material of the aluminum alloy thick plate is 7050 aluminum alloy, and the size is: 3000×1200×80mm. Place the thick plate in a roller hearth heating furnace for two-stage solution treatment (300°C / 30min+480°C / 30min): take the value of A as 84.0 and the value of B as 4.5×10 -4 , according to the formula calculation, first raise the temperature of the furnace gas to 373°C, then quickly cool down to 300°C, and keep it for 30 minutes; raise the temperature to 520°C, then quickly cool it down to 480°C, and keep it for 30 minutes. For the heating process of furnace gas and thick plate, see figure 1 .

Embodiment 2

[0024] The aluminum alloy thick plate material is 7085 aluminum alloy, and the size is: 3000×1200×180mm. Place the thick plate in a roller hearth heating furnace for two-stage solution treatment (300°C / 30min+485°C / 30min): take the value of A as 170.8 and the value of B as 2.2×10 -4 , according to the formula calculation, first raise the temperature of the furnace gas to 452°C, then quickly cool down to 300°C, and keep it for 30 minutes; raise the temperature to 570°C, then quickly cool it down to 480°C, and keep it for 30 minutes. For the heating process of furnace gas and thick plate, see image 3 .

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Abstract

The invention discloses a furnace quick warming method for a two-stage solution of an aluminum alloy. The method comprises the following steps of: firstly, heating the furnace gas temperature to be far higher than a first-stage solution temperature of the aluminum plate, then quickly reducing the furnace gas temperature to the first-stage solution temperature, and keeping the temperature; and thenquickly heating the furnace gas temperature to be far higher than a second-stage solution temperature of the aluminum plate, then reducing the furnace gas temperature to the second-stage solution temperature, and keeping the temperature. The heating method for each-stage warming can be divided into three stages: a fast heating stage, a fast cooling stage and an insulating stage. The key point isthat the furnace gas heating temperature of the quick heating stage is calculated accurately. The method can heat the temperature of an aluminum alloy material to the solution temperature quickly andefficiently, so that the heat treatment time is shortened and the production efficiency is increased; meanwhile, the performance loss caused by long-time heating can be avoided. The process method issimple to operate and cost-saving, and has actual industrial production and application value.

Description

technical field [0001] The invention relates to a solid solution method for aluminum alloy materials, belonging to the field of nonferrous metal materials and thermal processing thereof. Background technique [0002] Due to its comprehensive advantages in manufacturing cost, structural weight reduction and formability, aluminum alloy structural parts are widely used in important lightweight overall structures such as aviation, aerospace, navigation and transportation. Industrial aluminum alloy structural parts are generally solid solution strengthenable aluminum alloys, which require solid solution, quenching, aging and other solid solution processes to obtain high strength, high toughness and corrosion resistance. For ultra-high-strength aluminum alloy materials, the two-stage solid solution solution system can pre-precipitate Al3Zr particles in the solid solution stage, which can effectively inhibit recrystallization and improve its mechanical properties. The existing two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 邓运来范世通张研龙涛黄心悦徐进军
Owner CENT SOUTH UNIV
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