Casting and heat treatment technology of high-strength aluminum alloy

An aluminum alloy, high-strength technology, applied in the field of aluminum alloy casting, can solve the problem of low aluminum alloy strength, and achieve the effect of improving strength and beneficial market value

Inactive Publication Date: 2021-01-12
浙江茸创机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing aluminum alloys are not properly heat-treated during the melting stage of the raw materials in the casting process, resulting in low strength of the produced aluminum alloys, which need to be improved

Method used

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  • Casting and heat treatment technology of high-strength aluminum alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A high-strength aluminum alloy casting and heat treatment process, comprising the following process steps:

[0030] 1) Raw material melting: the aluminum alloy raw material is put into a melting furnace for melting treatment, wherein the solid melting temperature is 5000°C, and the solid melting time is 10 hours to obtain an aluminum alloy solution, and scandium and silver are added to the obtained aluminum alloy solution, Among them, it was found that the addition of scandium has a timely strengthening effect on the precipitation of aluminum alloy liquid, and the hardness of aluminum alloy castings will increase. Adding an appropriate amount of silver to the aluminum alloy molten liquid, explore the aluminum alloy with different mass fractions of silver solution in the heat treatment state Precipitation and hardness performance (results are shown in Table 1), and then the aluminum alloy solution was heat-preserved at 1500°C for 6 hours;

[0031] 2) Die-casting machine ...

Embodiment 2

[0040] A high-strength aluminum alloy casting and heat treatment process, comprising the following process steps:

[0041] 1) Raw material melting: put the aluminum alloy raw material into a melting furnace for melting treatment, wherein the solid melting temperature is 5300°C, and the solid melting time is 13 hours to obtain an aluminum alloy solution, and scandium and silver are added to the obtained aluminum alloy solution, Among them, it was found that the addition of scandium has a timely strengthening effect on the precipitation of aluminum alloy liquid, and the hardness of aluminum alloy castings will increase. Adding an appropriate amount of silver to the aluminum alloy molten liquid, explore the aluminum alloy with different mass fractions of silver solution in the heat treatment state Precipitation and hardness performance (results are shown in Table 1), and then the aluminum alloy solution was heat-preserved at 1600°C for 8 hours;

[0042] 2) Die-casting machine deb...

Embodiment 3

[0051] A high-strength aluminum alloy casting and heat treatment process, comprising the following process steps:

[0052] 1) Raw material melting: the aluminum alloy raw material is put into a melting furnace for melting treatment, wherein the solid melting temperature is 6000°C, and the solid melting time is 14 hours to obtain an aluminum alloy solution, and scandium and silver are added to the obtained aluminum alloy solution, Among them, it was found that the addition of scandium has a timely strengthening effect on the precipitation of aluminum alloy liquid, and the hardness of aluminum alloy castings will increase. Adding an appropriate amount of silver to the aluminum alloy molten liquid, explore the aluminum alloy with different mass fractions of silver solution in the heat treatment state Precipitation and hardness performance (results are shown in Table 1), and then the aluminum alloy solution was heat-preserved at 2000°C for 10 hours;

[0053] 2) Die-casting machine...

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Abstract

The invention discloses a casting and heat treatment technology of a high-strength aluminum alloy. The casting and heat treatment technology is characterized by including the following steps of (1) melting of raw materials, (2) debugging of a die-casting machine, (3) mounting of a die-casting die, (4) preheating of the die-casting die, (5) pouring and injection, (6) die opening, (7) core pulling and part taking, (8) trimming as well as (9) inspection and delivery. According to the technology, the accurate heat treatment technology is adopted in the raw material melting stage of aluminum alloycasting, namely, the melting temperature, the melting time, the heat preservation temperature after melting and the heat preservation time of the aluminum alloy raw material are controlled reasonably,and scandium and silver are added, so that compared with existing die-cast aluminum alloys, the finally-prepared die-cast aluminum alloy has the advantages that the strength is greatly improved and the alloy has the beneficial market value.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, in particular to a high-strength aluminum alloy casting and heat treatment process thereof. Background technique [0002] Casting aluminum alloy is to fill the casting mold with molten metal to obtain the aluminum alloy of parts of various shapes. It has the advantages of low density, high specific strength, good corrosion resistance and casting process, and is less restricted by the structural design of parts. Divided into Al-Si and Al-Si-Mg-Cu-based medium-strength alloys; Al-Cu-based high-strength alloys; Al-Mg-based corrosion-resistant alloys; Al-Re-based heat-strength alloys. Most of them require heat treatment to achieve the purpose of strengthening the alloy, eliminating the internal stress of the casting, stabilizing the structure and the size of the part. It is used to manufacture beams, gas turbine blades, pump bodies, pylons, hubs, air intake lips and engine casings, e...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B22D17/00C22C1/02C22C21/00
CPCB22D17/00C22C1/026C22C21/00
Inventor杨震姚雪庭樊超徐县文李广山
Owner浙江茸创机械制造有限公司