阅读说明：本技术 一种铝合金铸锭均匀化处理方法及铝合金扁锭 (Aluminum alloy ingot casting homogenization treatment method and aluminum alloy slab ingot ) 是由 梁舫 李强强 刘三桂 于 2020-11-25 设计创作，主要内容包括：本发明涉及金属铸造技术领域,具体涉及一种铝合金铸锭均匀化处理方法及铝合金扁锭。其中,铝合金铸锭均匀化处理方法包括：对原材料进行均匀化铸锭；对铸锭完成的产品进行保温处理；对保温处理完的产品进行均匀化处理；对均匀化处理后的产品进行冷却处理得到最终产品。通过测试采用本申请的方法制备的产品杜绝了均匀化处理或者保温处理后冷却时出现炸裂的现象,同时,获得好的组织结构,提高了合金的成品性能和加工性能。(The invention relates to the technical field of metal casting, in particular to an aluminum alloy ingot casting homogenization treatment method and an aluminum alloy slab ingot. The homogenizing treatment method of the aluminum alloy ingot comprises the following steps: carrying out homogenization ingot casting on the raw materials; carrying out heat preservation treatment on the product after ingot casting; homogenizing the heat-insulated product; and cooling the homogenized product to obtain the final product. The product prepared by the method avoids the phenomenon of cracking during cooling after homogenization treatment or heat preservation treatment through testing, and simultaneously obtains a good organization structure and improves the finished product performance and the processing performance of the alloy.)

1. A homogenizing treatment method for an aluminum alloy ingot is characterized by comprising the following steps:

carrying out homogenization ingot casting on the raw materials;

carrying out heat preservation treatment on the product after ingot casting;

homogenizing the heat-insulated product;

and cooling the homogenized product to obtain the final product.

2. The method of homogenizing an aluminum alloy ingot according to claim 1, wherein homogenizing the raw material ingot comprises:

when the ingot casting is homogenized, the initial temperature of the ingot casting environment is set to be 10-15 ℃ and kept for 3-5 hours;

raising the temperature of the ingot casting environment to 450-460 ℃, and keeping for 11-13 hours;

then the temperature of the ingot casting environment is gradually increased to 460-470 ℃ and kept for 9-11 hours.

3. The method of homogenizing an aluminum alloy ingot according to claim 1, wherein homogenizing the raw material ingot comprises:

when the ingot casting is homogenized, the initial temperature of the ingot casting environment is set to be 10-15 ℃ and kept for 4 hours;

raising the temperature of the ingot casting environment to 453 ℃ and keeping the temperature for 12 hours;

the temperature of the ingot environment was then gradually increased from 453 ℃ to 465 ℃ over 20 minutes and held for 10 hours.

4. The method for homogenizing an aluminum alloy ingot according to claim 1, wherein the heat-retaining treatment of the ingot-completed product comprises:

setting the initial temperature of the heat preservation environment to be 10-15 ℃ and keeping for 2.5-3.5 hours;

then the temperature of the heat preservation environment is raised to 390 to 410 ℃, and the heat preservation is carried out for 1.5 to 2.5 hours.

5. The method for homogenizing an aluminum alloy ingot according to claim 1, wherein the heat-retaining treatment of the ingot-completed product comprises:

setting the initial temperature of the heat preservation environment to be 10-15 ℃ and keeping for 3 hours;

then the temperature of the heat preservation environment is raised to 390-410 ℃, and the heat preservation is carried out for 2 hours.

6. The method for homogenizing an aluminum alloy ingot according to claim 1, wherein the homogenizing the heat-preserved product comprises:

firstly, setting the initial temperature of a homogenization treatment environment to be 10-15 ℃, and keeping the temperature for 1.5-2.5 hours;

then gradually raising the temperature of the homogenization treatment environment to 450-460 ℃, and keeping the temperature for 8.5-9.5 hours;

finally, the temperature of the homogenization environment is gradually raised to 460-470 ℃ and kept for 8.5-9.5 hours.

7. The method of homogenizing an aluminum alloy ingot according to claim 1, wherein homogenizing the heat-insulated product comprises:

firstly, setting the initial temperature of a homogenization treatment environment to be 10-15 ℃, and keeping the temperature for 2 hours;

then gradually raising the temperature of the homogenization treatment environment to 453 ℃ and keeping the temperature for 9 hours;

finally, the temperature of the homogenization environment was gradually increased from 453 ℃ to 465 ℃ over 20 minutes and held for 9 hours.

8. The method of homogenizing an aluminum alloy ingot according to claim 1, wherein cooling the homogenized product to obtain a final product comprises: and carrying out air cooling treatment on the homogenized product to obtain a final product.

9. An aluminium alloy slab ingot, characterised in that it is produced by a method according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of metal casting, in particular to an aluminum alloy ingot casting homogenization treatment method and an aluminum alloy slab ingot.

Background

The aluminum alloy has high alloying degree, high strength and good mechanical property, thereby being widely applied. In the prior art, in the homogenization treatment of aluminum alloy ingot casting, the temperature rise time is short, the temperature control is unreasonable, and the explosion cracking of the ingot casting during cooling can be seriously caused. The homogenization temperature and the heat preservation time are improper, the good homogenization effect cannot be achieved, even overburning is caused, and the processing performance of the alloy is influenced.

Disclosure of Invention

The invention mainly solves the technical problem that the processing performance of the alloy is influenced due to poor homogenization effect when the aluminum alloy is cast in the prior art.

A homogenizing treatment method for an aluminum alloy ingot comprises the following steps:

carrying out homogenization ingot casting on the raw materials;

carrying out heat preservation treatment on the product after ingot casting;

homogenizing the heat-insulated product;

and cooling the homogenized product to obtain the final product.

In one embodiment, said homogenizing the raw material ingot comprises:

when the ingot casting is homogenized, the initial temperature of the ingot casting environment is set to be 10-15 ℃ and kept for 3-5 hours;

raising the temperature of the ingot casting environment to 450-460 ℃, and keeping for 11-13 hours;

then the temperature of the ingot casting environment is gradually increased to 460-470 ℃ and kept for 9-11 hours.

In one embodiment, said homogenizing the raw material ingot comprises:

when the ingot casting is homogenized, the initial temperature of the ingot casting environment is set to be 10-15 ℃ and kept for 4 hours;

raising the temperature of the ingot casting environment to 453 ℃ and keeping the temperature for 12 hours;

the temperature of the ingot environment was then gradually increased from 453 ℃ to 465 ℃ over 20 minutes and held for 10 hours.

In one embodiment, the heat-insulating treatment of the ingot-finished product comprises:

setting the initial temperature of the heat preservation environment to be 10-15 ℃ and keeping for 2.5-3.5 hours;

then the temperature of the heat preservation environment is raised to 390 to 410 ℃, and the heat preservation is carried out for 1.5 to 2.5 hours.

In one embodiment, the heat-insulating treatment of the ingot-finished product comprises:

setting the initial temperature of the heat preservation environment to be 10-15 ℃ and keeping for 3 hours;

then the temperature of the heat preservation environment is raised to 390-410 ℃, and the heat preservation is carried out for 2 hours.

In one embodiment, the homogenizing treatment of the heat-preserved product includes:

firstly, setting the initial temperature of a homogenization treatment environment to be 10-15 ℃, and keeping the temperature for 1.5-2.5 hours;

then gradually raising the temperature of the homogenization treatment environment to 450-460 ℃, and keeping the temperature for 8.5-9.5 hours;

finally, the temperature of the homogenization environment is gradually raised to 460-470 ℃ and kept for 8.5-9.5 hours.

In one embodiment, the homogenizing treatment of the heat-preserved product includes:

firstly, setting the initial temperature of a homogenization treatment environment to be 10-15 ℃, and keeping the temperature for 2 hours;

then gradually raising the temperature of the homogenization treatment environment to 453 ℃ and keeping the temperature for 9 hours;

finally, the temperature of the homogenization environment was gradually increased from 453 ℃ to 465 ℃ over 20 minutes and held for 9 hours.

In one embodiment, the cooling the homogenized product to obtain the final product includes: and carrying out air cooling treatment on the homogenized product to obtain a final product.

An aluminum alloy slab ingot is prepared by the aluminum alloy ingot casting homogenization treatment method.

The method for homogenizing an aluminum alloy ingot provided by the embodiment comprises the following steps: carrying out homogenization ingot casting on the raw materials; carrying out heat preservation treatment on the product after ingot casting; homogenizing the heat-insulated product; and cooling the homogenized product to obtain the final product. The product prepared by the method avoids the phenomenon of cracking during cooling after homogenization treatment or heat preservation treatment through testing, and simultaneously obtains a good organization structure and improves the finished product performance and the processing performance of the alloy.

Drawings

FIG. 1 is a flow chart of a homogenization treatment method for an aluminum alloy ingot according to an embodiment of the application;

FIG. 2 is a view showing the structure under a microscope of a portion of an ingot produced by the method of the present example;

FIG. 3 is a microstructure view under a microscope of another portion of an ingot produced by the method of the present example;

fig. 4 is a microscopic structure view of another portion of the ingot produced by the method of the present example.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

In the embodiment of the invention, the temperature and time of each stage in the aluminum alloy ingot casting process are obtained through multiple tests and tests, so that the phenomenon of explosion and cracking during cooling after homogenization treatment or heat preservation treatment is avoided. Meanwhile, a good tissue structure is obtained, and the finished product performance and the processing performance of the alloy are improved.

The first embodiment is as follows:

in this embodiment, a preparation method of 7075 alloy is taken as an example to explain the homogenization treatment method of the aluminum alloy ingot, and as shown in fig. 1, the method specifically includes:

step 101: carrying out homogenization ingot casting on the raw materials;

step 102: carrying out heat preservation treatment on the product after ingot casting;

step 103: homogenizing the heat-insulated product;

step 104: and cooling the homogenized product to obtain the final product.

Wherein, in one embodiment, homogenizing the raw material (e.g., alloying liquid) ingot in step 101 comprises: when the ingot is homogenized, the initial temperature of the ingot casting environment (such as a casting furnace) is set to be 10-15 ℃ and kept for 3-5 hours; raising the temperature of the ingot casting environment to 450-460 ℃, and keeping for 11-13 hours; then the temperature of the ingot casting environment is gradually increased to 460-470 ℃ and kept for 9-11 hours.

Preferably, in another embodiment, tests have found that when homogenizing an ingot, the initial temperature of the ingot environment is set to 10-15 ℃ and held for 4 hours; raising the temperature of the ingot casting environment to 453 ℃ and keeping the temperature for 12 hours; the temperature of the ingot environment was then gradually increased from 453 ℃ to 465 ℃ over 20 minutes and held for 10 hours. The properties of the semi-finished product thus obtained are the best.

In another embodiment, the heat preservation treatment of the product after ingot casting comprises the following steps: setting the initial temperature of the heat preservation environment to be 10-15 ℃ and keeping for 2.5-3.5 hours; then the temperature of the heat preservation environment is raised to 390 to 410 ℃, and the heat preservation is carried out for 1.5 to 2.5 hours.

Preferably, in the embodiment, the initial temperature of the heat preservation environment is set to 10-15 ℃ and kept for 3 hours; then the temperature of the heat preservation environment is raised to 390-410 ℃, and the heat preservation is carried out for 2 hours. The product thus obtained has better properties.

In one embodiment, the homogenizing step 103 of the heat-preserved product comprises: firstly, setting the initial temperature of a homogenization treatment environment to be 10-15 ℃, and keeping the temperature for 1.5-2.5 hours; then gradually raising the temperature of the homogenization treatment environment to 450-460 ℃, and keeping the temperature for 8.5-9.5 hours; finally, the temperature of the homogenization environment is gradually raised to 460-470 ℃ and kept for 8.5-9.5 hours.

Preferably, in this embodiment, the homogenizing the heat-preserved product includes: firstly, setting the initial temperature of a homogenization treatment environment to be 10-15 ℃, and keeping the temperature for 2 hours; then gradually raising the temperature of the homogenization treatment environment to 453 ℃ and keeping the temperature for 9 hours; finally, the temperature of the homogenization environment was gradually increased from 453 ℃ to 465 ℃ over 20 minutes and held for 9 hours.

In this embodiment, air cooling is selected to obtain the final product when the homogenized product is cooled.

The product prepared by the method avoids the phenomenon of cracking during cooling after homogenization treatment or heat preservation treatment through testing, and simultaneously obtains a good organization structure and improves the finished product performance and the processing performance of the alloy.

Example two:

the embodiment provides an aluminum alloy slab ingot, which is manufactured by the method provided by the first embodiment, and the aluminum alloy slab ingot avoids the phenomenon of explosion and cracking during cooling after homogenization treatment or heat preservation treatment. Referring to fig. 2, fig. 3 and fig. 4, it can be seen from fig. 2, fig. 3 and fig. 4 that the aluminum alloy slab ingot has a better structure, and the finished product performance and the processing performance of the alloy are improved.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.