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A preparation method of deformed aluminum alloy high solid phase fraction semi-solid slurry applied to semi-solid thixotropic deformation

A technology of deforming aluminum alloy and semi-solid slurry, which is applied in the field of semi-solid slurry preparation, which can solve the problems of affecting the shape of the billet and lack of large-scale supply, and achieve the effect of short process, small grain size and high degree of spheroidization

Active Publication Date: 2019-02-01
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the cold deformation required for the preparation of deformed aluminum alloy semi-solid slurry by the current solid phase method, which will affect the shape of the billet, resulting in the need for secondary division or mechanical processing during the use of the billet and the required warm deformation bars and plates on the market. There is no technical problem of large-scale supply, but a method for preparing semi-solid slurry of deformed aluminum alloy with high solid fraction applied to semi-solid thixotropic deformation

Method used

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  • A preparation method of deformed aluminum alloy high solid phase fraction semi-solid slurry applied to semi-solid thixotropic deformation
  • A preparation method of deformed aluminum alloy high solid phase fraction semi-solid slurry applied to semi-solid thixotropic deformation
  • A preparation method of deformed aluminum alloy high solid phase fraction semi-solid slurry applied to semi-solid thixotropic deformation

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specific Embodiment approach 1

[0027] Specific implementation mode 1: This implementation mode is a method for preparing a deformed aluminum alloy high solid phase fraction semi-solid slurry applied to semi-solid thixotropic deformation, which is carried out according to the following steps:

[0028] 1. Heat the 2000-series, 5000-series, 6000-series or 7000-series deformed aluminum alloy cast slab to above the recrystallization temperature of the material for thermal deformation, so that the cumulative deformation is 35% to 80%; the thermal deformation method is Hot extruding into rods or hot rolling into plates; above the recrystallization temperature of the material is 0.55 to 0.8 times the melting point of the material;

[0029] 2. Naturally cooling the deformed aluminum alloy after thermal deformation in step 1 to room temperature;

[0030] 3. Quantitatively dividing the deformed aluminum alloy at room temperature in step 2 to obtain blanks;

[0031] When the deformed aluminum alloy at room temperature...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment differs from Embodiment 1 in that: the recrystallization temperature of the material described in step 1 is 0.7 times the melting point of the material. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the quantitative division in step 3 is completed by electric saw or wire cutting. Others are the same as in the second embodiment.

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Abstract

The invention provides a preparation method of wrought aluminum alloy high-solid-fraction semi-solid slurry for semi-solid thixoforming and relates to a preparation method of semi-solid slurry for semi-solid thixoforming in order to solve the technical problems that blanks need to be subjected to secondary cutting or machining in the using process due to the fact that cold deformation is needed during the process for preparing wrought aluminum alloy semi-solid slurry through an existing solid-phase method and no large-scale required worm-deformation bars and plates are supplied in the market. The preparation method comprises the steps of (1) conducting heat deformation; (2) conducting cooling; (3) conducting quantitative cutting; and (4) heating materials to the semi-solid temperature. A large quantity of hot-extruded bars and hot-rolled plates are supplied in an existing market and are directly heated to a semi-solid isothermal state to obtain semi-solid slurry after being subjected to allowance and quantitative cutting according to the volume of semi-solid thixoforming parts. In this way, the well-formed fine-grain and high-spheroidization-degree wrought aluminum alloy semi-solid slurry can be prepared in short process and at low cost.

Description

technical field [0001] The invention relates to a method for preparing semi-solid slurry applied to semi-solid thixotropy. Background technique [0002] The demand for energy saving, emission reduction and consumption reduction is increasing day by day in the equipment manufacturing industry. The lightweight of products has become an effective means of energy saving, emission reduction and consumption reduction in equipment manufacturing industry. In addition to the consideration of material selection, the lightweight of the product is mainly the forming and manufacturing process. The short-process, low-cost near-net shape technology is the main way to meet the needs of lightweight forming technology. Semi-solid thixoforming technology is a kind of alloy precision near net shape technology. Compared with conventional casting technology, it has the advantages of low forming temperature, high mold life and good product performance; compared with conventional forging technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/053C22F1/057C22F1/047C22F1/05
CPCC22F1/047C22F1/05C22F1/053C22F1/057
Inventor 姜巨福王迎肖冠菲
Owner HARBIN INST OF TECH