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Aluminum alloy plate strip preparation method based on vacuum centrifugal casting and vacuum centrifugal casting device

A technology of aluminum alloy strips and vacuum centrifugation, which is applied in the field of vacuum centrifugal casting devices and can solve problems such as defects in the structure of aluminum alloy strips

Pending Publication Date: 2021-09-10
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a method for preparing aluminum alloy plates and strips based on vacuum centrifugal casting, which solves the technical problem that the structure of aluminum alloy plates and strips prepared by the existing methods will have defects

Method used

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  • Aluminum alloy plate strip preparation method based on vacuum centrifugal casting and vacuum centrifugal casting device
  • Aluminum alloy plate strip preparation method based on vacuum centrifugal casting and vacuum centrifugal casting device
  • Aluminum alloy plate strip preparation method based on vacuum centrifugal casting and vacuum centrifugal casting device

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preparation example Construction

[0056] The present invention proposes for the first time a method for preparing aluminum alloy plates and strips based on vacuum centrifugal casting, which includes the following steps: Step 1: preparing raw materials according to the target aluminum alloy composition;

[0057] Step 2: If Figure 5-6 As shown, the vacuum centrifugal casting device for casting cast billets casts cast billets through vacuum centrifugal casting, and the specific operations are as follows:

[0058] 1) Put the prepared aluminum alloy raw materials into the melting crucible 10 through the feeding device 6 and the feeding hopper 5, the melting crucible 10 is set in the furnace body 1 of the melting furnace, and the furnace body 1 is evacuated to a vacuum degree by using a vacuum system 16 1 to 10 5 Pa; heat the melting crucible 10 to the aluminum alloy melting temperature of 600°C-760°C through the induction coil 2, and keep it warm for 0-1h; cool the melting crucible to the casting temperature of 5...

Embodiment 1

[0072] A preparation method of 2A97 aluminum alloy plate and strip, comprising the steps of:

[0073] Step 1: According to the ratio in Table 1, mix the original:

[0074] Table 1 Raw material ratio of 2A97 aluminum alloy (mass percentage)

[0075]

[0076] Step Two: Adopt Figure 5 or Figure 6 The device in the device casts 2A97 aluminum alloy tube blanks by means of vacuum centrifugal casting, and the specific operations are as follows:

[0077] 1) Put the prepared aluminum alloy raw materials into the melting crucible, and vacuumize the furnace body until the vacuum degree is 1Pa;

[0078] 2) Heat the melting crucible to 740°C; turn on the mold rotation motor and adjust it to 800 rpm;

[0079] 3) Cool down the melting crucible to 680°C, and pour the aluminum alloy liquid in the crucible into the rotating billet mold;

[0080] 4) After the aluminum alloy liquid in the mold of the aluminum alloy plate and strip is completely solidified, stop the rotation of the cast ...

Embodiment 2

[0094] A preparation method of 7055 aluminum alloy plate and strip, comprising the steps of:

[0095] Step 1: According to the ratio of Table 4, the original ratio:

[0096] Table 4 Raw material ratio of 7055 aluminum alloy (mass percentage)

[0097]

[0098] Step Two: Adopt Figure 5 or Figure 6 The device in the method casts 7055 aluminum alloy blanks by vacuum centrifugal casting, and the specific operations are as follows:

[0099] 1) Put the prepared aluminum alloy raw materials into the melting crucible, and vacuumize the furnace body until the vacuum degree is 1Pa;

[0100] 2) Heat the melting crucible to 740°C; turn on the mold rotation motor and adjust it to 800 rpm;

[0101] 3) Cool down the melting crucible to 680°C, and pour the aluminum alloy liquid in the crucible into the rotating billet mold;

[0102] 4) After the aluminum alloy liquid in the mold of the aluminum alloy plate and strip is completely solidified, stop the rotation of the cast tube billet ...

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Abstract

The invention relates to an aluminum alloy plate strip preparation method based on vacuum centrifugal casting and a vacuum centrifugal casting device. The preparation method comprises the following steps that raw materials are prepared according to components of a target aluminum alloy; a cast pipe blank is cast in a vacuum centrifugal casting manner; the cast pipe blank prepared through vacuum centrifugal casting is split, the split cast pipe blank is leveled, and an aluminum alloy cast plate blank is obtained; and the aluminum alloy casting plate blank is rolled, and an aluminum alloy plate strip is obtained. According to the preparation method, under the action of centrifugal force, the feeding environment in the solidification process of aluminum alloy melt liquid can be obviously improved, and casting defects such as shrinkage porosity and shrinkage cavities can be effectively bridged under the action of the centrifugal force. Due to the fact that vacuum centrifugal casting is completed under the vacuum condition, a melt does not make contact with air, melt oxidation can be effectively avoided, the defect of oxide inclusion in the cast pipe blank is greatly reduced, and the quality of the pipe blank is improved.

Description

technical field [0001] The invention relates to the field of preparation of aluminum alloy plates and strips, in particular to a method for preparing aluminum alloy plates and strips based on vacuum centrifugal casting and a vacuum centrifugal casting device. Background technique [0002] Aluminum alloy plates and strips are widely used in construction, bridges, automobiles, pressure vessels, aerospace and other industrial fields. The conventional production method of aluminum alloy plate and strip is semi-continuous casting to prepare ingot slab + subsequent rolling to prepare and shape. Such as figure 1 As shown, the liquid aluminum melt is poured into the pouring liquid tank, poured into the crystallizer through the funnel, and the melt contacts with the crystallizer and the dummy head, and solidifies on the contact surface. The solidified ingot will descend together with the dummy head. When the ingot is pulled out from the crystallizer, the cooling water is directly s...

Claims

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Application Information

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IPC IPC(8): B22D13/02B22D21/04C22C21/16C22C21/10C22F1/057C22F1/053C21D8/02
CPCB22D13/023B22D13/026B22D21/04C22C21/16C22C21/10C22F1/057C22F1/053C21D8/0226C21D8/0236C21D8/0247
Inventor 王昭东钱晓明李勇刘国怀
Owner NORTHEASTERN UNIV
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