CN112899533A

CN112899533A - Smelting method of ZL114A alloy

Info

Publication number: CN112899533A
Application number: CN202110111007.0A
Authority: CN
Inventors: 潘贤顺; 李祥文
Original assignee: Zhejiang Wangsheng Power Mechanical And Electrical Co ltd
Current assignee: Zhejiang Wangsheng Power Mechanical And Electrical Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-06-04
Anticipated expiration: 2041-01-27
Also published as: CN112899533B

Abstract

The application discloses a method for smelting ZL114A alloy, which comprises the following steps: s1, adding a high-purity aluminum ingot for melting; s2, 700 ℃ and 800 ℃, high-purity Si is added; s3, modifying and refining the intermediate alloy; s4, refining by a high-purity argon rotary blowing method; and S5, standing and pouring. The method has the advantages of simple operation, short smelting time, high efficiency and difficult air suction of the alloy; the added alloy is modified, the alloy liquid is pure, and the quality of the aluminum liquid is high; the high-purity argon gas is refined by a rotary blowing method, and the high-purity argon gas refining agent is good in effect, non-toxic, odorless, green and pollution-free.

Description

Smelting method of ZL114A alloy

Technical Field

The invention belongs to the technical field of metal smelting, and particularly relates to a method for smelting ZL114A alloy.

Background

A base for spaceflight belongs to a large-scale thick-wall part (the thickness is 0.2m, the length is 10m), and the alloy is required to have good fluidity and high mechanical property. Currently, ZL114A is mainly adopted in the aerospace field, because the ZL114A has higher Si content, liquid metal has better fluidity, and large-scale thick castings can be formed, and due to the addition of trace Mg element, Mg can be formed₂Since the aging strengthening treatment is performed with the Si precipitate phase, the steel sheet has high strength and good ductility. In order to ensure high mechanical property of aerospace products, the ZL114A aluminum alloy material used in the aerospace products is generally prepared from refined aluminum (Al is more than or equal to 99.85%) in a vacuum test furnace. But in the actual production process, the operation is more complicated, the smelting time is long, andgold is not easy to absorb gas, so that the production efficiency is low, and the quality of the obtained alloy is poor, so that the problem in the prior art needs to be solved by developing a smelting method of ZL114A alloy.

Disclosure of Invention

The invention aims to provide a method for smelting ZL114A alloy.

In order to solve the technical problems, the invention adopts the following technical scheme:

a smelting method of ZL114A alloy comprises the following steps:

s1, adding a high-purity aluminum ingot for melting;

s2, 700 ℃ and 800 ℃, high-purity Si is added;

s3, modifying and refining the intermediate alloy;

s4, refining by a high-purity argon rotary blowing method;

and S5, standing and pouring.

Preferably, in S3, the alloy added in the modification and refinement comprises an imported AlTiB wire, Al-Sb additive alloy and Al-Te additive alloy.

Preferably, in S4, the rotatory jetting device that rotatory blowing method used is including being used for concise furnace body, be equipped with the furnace chamber in the furnace body, one side of furnace body is equipped with the base, the upper end of base is equipped with first mount pad, be equipped with on the first mount pad along the gliding slider of first mount pad, one side of slider is equipped with the box, one side that the box is close to the furnace body is equipped with the stirring pipe, be equipped with gaseous jetting chamber in the stirring pipe, be equipped with the first blow vent of a plurality of on the stirring pipe, the lower extreme of stirring pipe is equipped with the roating seat, be equipped with the intake pipe in the stirring pipe, the base upper end still is equipped with the air pump, be connected with the induction pipe between air pump and the induction pipe, be equipped with the second blow vent of a plurality of and gaseous jetting chamber.

Preferably, the included angle between the first air vent and the horizontal direction is alpha, and alpha is more than 0 and less than or equal to 60 degrees.

Preferably, the height difference of the adjacent first air vents in the vertical direction is h, and h is more than or equal to 6cm and less than or equal to 12 cm.

Preferably, a plurality of convex ribs are arranged on the rotating seat.

Preferably, one side of the first mounting seat is provided with a guide rail, the sliding block slides along the guide rail, an air cylinder for driving the sliding block to move is arranged in the box body, and a driving motor for driving the stirring pipe to rotate is further arranged in the box body.

Preferably, one side of first mount pad is equipped with the limiting plate, one side that the slider is close to the limiting plate is equipped with the piston, one side that the piston is close to the limiting plate is equipped with the piston shaft, one side that the piston shaft is close to the limiting plate is equipped with the second mount pad, install the pivot on the second mount pad, be equipped with in the pivot and lean on the leading wheel that sets up with the limiting plate.

Preferably, a spring is arranged between the piston and the second mounting seat and sleeved on the periphery of the piston shaft.

Preferably, a support is arranged at the lower end of the air inlet pipe and in the gas injection cavity, and a flow guide cover is arranged in the gas injection cavity of the support.

The invention has the following beneficial effects:

1. the operation is simple, the smelting time is short, the efficiency is high, and the alloy is not easy to absorb air;

2. the added alloy is modified, the alloy liquid is pure, and the quality of the aluminum liquid is high;

3. the high-purity argon gas is refined by a rotary blowing method, and the high-purity argon gas refining agent is good in effect, non-toxic, odorless, green and pollution-free.

Drawings

FIG. 1 is an electron microscope image of the microstructure of ZL114A alloy of the present invention without deterioration;

FIG. 2 is an electron microscope image of the microstructure of ZL114A alloy of the present invention when it is deteriorated;

FIG. 3 is a schematic structural diagram of argon rotary blowing in the smelting method of ZL114A alloy;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

fig. 6 is a partially enlarged schematic view of C in fig. 3.

The figures are numbered:

1. a furnace body; 2. a stirring pipe; 3. a furnace chamber; 4. a gas injection cavity; 5. a box body; 6. an air inlet pipe; 7. a support; 8. a pod; 9. an air supply pipe; 10. a slider; 11. a guide rail; 12. a first mounting seat; 13. an air pump; 14. a universal wheel; 15. a first vent; 16. a second vent; 17. a rib is protruded; 18. a limiting plate; 19. a piston; 20. a piston shaft; 21. a spring; 22. a second mounting seat; 23. a rotating shaft; 24. a guide wheel.

Detailed Description

In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.

As shown in fig. 1-2, the present invention provides a method for melting ZL114A alloy, comprising the following steps:

s1, adding a high-purity aluminum ingot for melting;

s2, 700 ℃ and 800 ℃, high-purity Si is added;

s3, modifying and refining the intermediate alloy;

s4, refining by a high-purity argon rotary blowing method;

and S5, standing and pouring.

In this example, the alloys added in the modification and refinement in S3 include imported AlTiB wire, Al-Sb medium alloy and Al-Te medium alloy.

In the present embodiment, as shown in S4, the rotary blowing device used in the rotary blowing method includes a furnace body 1 for refining, a furnace chamber 3 is arranged in the furnace body 1, a base is arranged on one side of the furnace body 1, a first mounting seat 12 is arranged at the upper end of the base, a sliding block 10 sliding along the first installation seat 12 is arranged on the first installation seat 12, a box body 5 is arranged on one side of the sliding block 10, a stirring pipe 2 is arranged on one side of the box body 5 close to the furnace body 1, a gas blowing cavity 4 is arranged in the stirring pipe 2, a plurality of first air vents 15 are arranged on the stirring pipe 2, a rotating seat is arranged at the lower end of the stirring pipe 2, an air inlet pipe 6 is arranged in the stirring pipe 2, an air pump 13 is further arranged at the upper end of the base, an air supply pipe 9 is connected between the air pump 13 and the air inlet pipe 6, and a plurality of second air vents 16 communicated with the air injection cavity 4 are formed in the rotary base. Remove by slider 10 and realized that stirred tube 2 removes in vertical direction, stirred tube 2 is rotatory by the motor drive in the box 5, inputs intake pipe 6 with argon gas by air pump 13 to enter into gaseous jetting chamber 4 in, spout by first blow vent 15 again, realized carrying out rotatory jetting with argon gas, effectively improved the efficiency and the quality of the rotatory jetting of argon gas.

In this embodiment, the included angle between the first vent 15 and the horizontal direction is α, and α is greater than 0 and less than or equal to 60 °. Particularly, in the embodiment, the alpha is 30 degrees, so that the liquid diversion blockage during air inlet can be avoided, and the air blowing efficiency and quality are also improved.

In the embodiment, the height difference of the adjacent first air vents 15 in the vertical direction is h, and h is more than or equal to 6cm and less than or equal to 12 cm. Particularly, in the embodiment, h is 8cm, so that the gas can be dispersed more uniformly, and the uniformity of the rotary blowing of argon is improved.

In this embodiment, the rotary base is provided with a plurality of ribs 17. The arrangement of the convex ribs 17 improves the efficiency of the stirring pipe 2 for stirring the molten metal.

In this embodiment, a guide rail 11 is disposed on one side of the first mounting seat 12, the slider 10 slides along the guide rail 11, an air cylinder for driving the slider 10 to move is disposed in the box 5, and a driving motor for driving the stirring pipe 2 to rotate is further disposed in the box 5. Through establishing guide rail 11 in one side of first mount pad 12, slider 10 slides along guide rail 11, establishes the cylinder that drive slider 10 removed in the box 5, establishes the drive in the box 5 the rotatory driving motor of agitator pipe 2 has so realized agitator pipe 2 and has removed in vertical direction and rotatory in the horizontal direction.

In this embodiment, one side of first mount pad 12 is equipped with limiting plate 18, one side that slider 10 is close to limiting plate 18 is equipped with piston 19, one side that piston 19 is close to limiting plate 18 is equipped with piston 19 axle, one side that piston 19 axle is close to limiting plate 18 is equipped with second mount pad 22, install pivot 23 on the second mount pad 22, be equipped with on the pivot 23 and lean on the leading wheel 24 who sets up with limiting plate 18. One side of the first mounting seat 12 is provided with a limiting plate 18, one side of the slider 10 close to the limiting plate 18 is provided with a piston 19 and a piston 19 shaft, the piston 19 shaft extends and retracts in the piston 19, and the guide wheel 24 slides along the limiting plate 18, so that the stability of the movement of the box body 5 is realized.

In the embodiment, a spring 21 is arranged between the piston 19 and the second mounting seat 22, and the spring 21 is sleeved on the outer periphery of the shaft of the piston 19. The spring 21 can realize buffering, and the moving stability of the sliding block 10 is improved.

In this embodiment, a support 7 is disposed at the lower end of the air inlet pipe 6 and in the gas injection cavity 4, and a flow guide sleeve 8 is disposed in the support 7 in the gas injection cavity 4. Therefore, the diversion of the gas can be realized, the dispersion of the gas is realized, and the efficiency and the quality of gas transmission are improved.

The above description should not be taken as limiting the invention to the embodiments, but rather, as will be apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which shall be deemed to fall within the scope of the invention as defined by the claims appended hereto.

Claims

1. A smelting method of ZL114A alloy is characterized by comprising the following steps:

s1, adding a high-purity aluminum ingot for melting;

s2, 700 ℃ and 800 ℃, high-purity Si is added;

s3, modifying and refining the intermediate alloy;

s4, refining by a high-purity argon rotary blowing method;

and S5, standing and pouring.

2. The method of melting the ZL114A alloy of claim 1, wherein the alloys added in the modification and refinement in S3 include imported AlTiB wire, Al-Sb medium alloy, and Al-Te medium alloy.

3. The method of melting the ZL114A alloy of claim 1, in S4, the rotary blowing device used in the rotary blowing method includes a furnace body for refining, a furnace chamber is arranged in the furnace body, a base is arranged on one side of the furnace body, a first mounting seat is arranged at the upper end of the base, the first mounting seat is provided with a sliding block which slides along the first mounting seat, one side of the sliding block is provided with a box body, a stirring pipe is arranged on one side of the box body close to the furnace body, a gas blowing cavity is arranged in the stirring pipe, the stirring pipe is provided with a plurality of first air vents, the lower end of the stirring pipe is provided with a rotating seat, the stirring pipe is internally provided with an air inlet pipe, the upper end of the base is also provided with an air pump, an air supply pipe is connected between the air pump and the air inlet pipe, and the rotating seat is provided with a plurality of second air vents communicated with the air blowing cavity.

4. The method of melting the ZL114A alloy of claim 3, wherein the angle α between the first vent and the horizontal is 0 < α ≦ 60 °.

5. The method for melting the alloy ZL114A as claimed in claim 3, wherein the height difference of adjacent first vent openings in the vertical direction is h, and 6cm ≦ h ≦ 12 cm.

6. The method for melting the ZL114A alloy of claim 3, wherein the rotating base is provided with a plurality of ribs.

7. The method for melting ZL114A alloy according to claim 3, wherein a guide rail is provided on one side of the first mounting seat, the slide block slides along the guide rail, a cylinder for driving the slide block to move is provided in the box, and a driving motor for driving the stirring pipe to rotate is further provided in the box.

8. The method for melting the ZL114A alloy according to claim 3, wherein a limiting plate is disposed on one side of the first mounting seat, a piston is disposed on one side of the slider close to the limiting plate, a piston shaft is disposed on one side of the piston close to the limiting plate, a second mounting seat is disposed on one side of the piston shaft close to the limiting plate, a rotating shaft is mounted on the second mounting seat, and a guide wheel abutting against the limiting plate is disposed on the rotating shaft.

9. The method for melting the ZL114A alloy of claim 8, wherein a spring is arranged between the piston and the second mounting seat, and the spring is sleeved on the outer periphery of the piston shaft.

10. The method for melting the ZL114A alloy of claim 3, wherein a support is provided at the lower end of the inlet pipe and located in the gas injection cavity, and the support is provided with a flow guide cover in the gas injection cavity.