阅读说明：本技术 一种利用再生料制备超细晶gh4169合金棒材的方法 (Method for preparing ultrafine-grained GH4169 alloy bar by using reclaimed materials ) 是由 刘猛 栾吉哲 李爱民 张欢欢 田水仙 王涛 耿长建 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种利用再生料制备超细晶GH4169合金棒材的方法,包括以下步骤：A、再生料清洗；B、原料冶炼；C、通过表面刨光处理实现自耗锭车光；D、均匀化退火；E、锻造加工。本发明能够改进现有技术的不足,实现使用再生料生产高质量超细晶GH4169合金棒材的目的。(The invention discloses a method for preparing an ultrafine grain GH4169 alloy bar by using reclaimed materials, which comprises the following steps: A. cleaning the reclaimed materials; B. smelting raw materials; C. polishing the consumable ingot by surface planing; D. carrying out homogenization annealing; E. and (5) forging. The invention can improve the defects of the prior art and realize the purpose of producing high-quality ultrafine grain GH4169 alloy bars by using reclaimed materials.)

1. A method for preparing an ultra-fine grain GH4169 alloy bar by using reclaimed materials is characterized by comprising the following steps:

A. cleaning the reclaimed materials;

immersing the regenerated material into a cleaning solution, wherein the cleaning solution comprises 12 wt% of sodium lauryl sulfate, 5 wt% of methyl amyl alcohol, 1.5 wt% of sulfuric acid and the balance of water; ultrasonic waves are input into the cleaning liquid, and the ultrasonic frequency: 15-100 kHz, power density: 0.5 to 5W/cm²(ii) a Temperature of cleaning liquid: 30-60 ℃; cleaning for 15-20 min;

B. smelting raw materials;

adding a reclaimed material into the new material, wherein the content of the reclaimed material is 60-70 wt%, smelting the raw material by vacuum induction, remelting the raw material by using protective atmosphere electroslag, and smelting the raw material by using vacuum consumable melting to obtain a finished product, wherein the chemical components of the finished product are as follows,

element(s) C Cr Mo Nb Ti Al Ni Content (wt.) 0.012～0.036 17～19 2.8～3.15 5.3～5.50 0.75～1.15 0.35～0.65 52～55 Element(s) Fe Co Mn Si S P Mg Content (wt.) 16～19 ≤1.0 ≤0.35 ≤0.35 ≤0.001 0.01～0.015 ≤0.003 Element(s) B Cu Ca Ta Pb Sn Se Content (wt.) ≤0.006 ≤0.30 ≤0.005 ≤0.1 ≤0.0005 ≤0.005 ≤0.0003 Element(s) Bi Ag Te Tl O N Content (wt.) ≤0.00003 ≤0.0005 ≤0.00005 ≤0.0001 ≤0.0025 ≤0.01

C. Polishing the consumable ingot by surface planing;

D. carrying out homogenization annealing;

heating the consumable ingot to 600 ℃, and preserving heat for 2 hours;

heating the consumable ingot to 1000 ℃ over 9 hours, and then preserving heat for 2 hours;

heating the consumable ingot to 1160 +/-10 ℃ for 4 hours, and then preserving the temperature for 25 hours;

heating the consumable ingot to 1190 +/-10 ℃ for 2 hours, and then preserving the heat for 50 hours;

cooling the consumable ingot to room temperature under a room temperature environment;

E. forging and processing;

heating the consumable ingot to 1110 +/-10 ℃ and forging for the first time;

then cooling to 1080 +/-20 ℃, and forging for the second time;

then cooling to 1060 +/-10 ℃, and forging for the third time;

then cooling to 1050 +/-10 ℃, forging for the fourth time, wherein the fourth forging deformation is not less than 30%, and preserving heat for 60-120 minutes after forging for the fourth time.

2. The method for preparing the ultra-fine grain GH4169 alloy bar material by using the reclaimed materials as claimed in claim 1, wherein the method comprises the following steps: and step E, forging for the fifth time, wherein the forging temperature for the fifth time is 750 ℃, the consumable ingot is continuously cooled in the forging process, and the forging finishing temperature for the fifth time is 300 ℃.

3. The method for preparing the ultra-fine grain GH4169 alloy bar material by using the reclaimed materials as claimed in claim 2, wherein the method comprises the following steps: in the step E, the forging machine for forging comprises a V-shaped anvil block (1) and a hammer head (2), a water supply pipeline (3) is arranged in the hammer head (2), a plurality of water spraying holes (4) communicated with the water supply pipeline (3) are formed in the surface of the hammer head (2), and the V-shaped anvil block (1) is connected with a water discharging hole (5).

4. The method for preparing the ultra-fine grain GH4169 alloy bar material by using the reclaimed materials as claimed in claim 3, wherein the method comprises the following steps: a plurality of guiding gutter (6) have been arranged to the inside wall annular of hole for water spraying (4), are provided with throat portion (7) in guiding gutter (6), and the play water direction of guiding gutter (6) is 45 with the axis contained angle of hole for water spraying (4), and spherical filter screen (8) are installed to the play water end of hole for water spraying (4), and spherical filter screen (8) are protruding to the inside of hole for water spraying (4), and the edge of spherical filter screen (8) articulates the delivery port in guiding gutter (6).

5. The method for preparing the ultra-fine grain GH4169 alloy bar material by using the reclaimed materials as claimed in claim 4, wherein the method comprises the following steps: the water draining device is characterized in that a water draining groove (9) is formed in the bottom of the V-shaped anvil block (1), the water draining hole (5) is communicated with the bottom of the water draining groove (9), a plurality of first flow guiding holes (10) are formed in two sides of the water draining groove (9) respectively, the top end of each first flow guiding hole (10) is connected with the inner side wall of the V-shaped anvil block (1), the bottom end of each first flow guiding hole (10) is connected with the water draining groove (9), a second flow guiding hole (11) communicated with the water draining groove (9) is formed in the bottom of the V-shaped anvil block (1), and the ratio of the inner diameters of the first flow guiding holes (10) to the inner diameter of the second flow.

Technical Field

The invention relates to the technical field of alloy material preparation, in particular to a method for preparing an ultrafine-grained GH4169 alloy bar by using reclaimed materials.

Background

The GH4169 alloy is a nickel-based wrought superalloy and widely applied to parts such as turbine discs, turbine shafts, compressor blades and the like, the GH4169 for the current aeroengine is produced by using new materials, and the utilization of GH4169 alloy reclaimed materials for foreign aeroengines is very common and perfect. The return material is the first choice for producing high-temperature alloy in the United states, the ratio of the ATI return material in the United states is more than 70 percent, and the total work of ATI in the United states indicates that: ATI prefers to use reclaimed materials, O, S and other impurity elements have low content, and the produced product has better quality and simpler production. The GH4169 alloy produced in China is all new material with unstable and uncontrollable components. The application of the regenerated GH4169 alloy bar in the field of aeroengines has important significance in saving strategic resources, reducing cost and improving quality.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a method for preparing an ultrafine grain GH4169 alloy bar by utilizing reclaimed materials, and the aim of producing the high-quality ultrafine grain GH4169 alloy bar by utilizing the reclaimed materials is fulfilled.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows.

A method for preparing an ultra-fine grain GH4169 alloy bar by using reclaimed materials comprises the following steps:

A. cleaning the reclaimed materials;

immersing the regenerated material into a cleaning solution, wherein the cleaning solution comprises 12 wt% of sodium lauryl sulfate, 5 wt% of methyl amyl alcohol, 1.5 wt% of sulfuric acid and the balance of water; ultrasonic waves are input into the cleaning liquid, and the ultrasonic frequency: 15-100 kHz, power density: 0.5 to 5W/cm²(ii) a Temperature of cleaning liquid: 30-60 ℃; cleaning for 15-20 min;

B. smelting raw materials;

adding a reclaimed material into the new material, wherein the content of the reclaimed material is 60-70 wt%, smelting the raw material by vacuum induction, remelting the raw material by using protective atmosphere electroslag, and smelting the raw material by using vacuum consumable melting to obtain a finished product, wherein the chemical components of the finished product are as follows,

element(s)

C

Cr

Mo

Nb

Ti

Al

Ni

Content (wt.)

0.012～0.036

17～19

2.8～3.15

5.3～5.50

0.75～1.15

0.35～0.65

52～55

Element(s)

Fe

Co

Mn

Si

S

P

Mg

Content (wt.)

16～19

≤1.0

≤0.35

≤0.35

≤0.001

0.01～0.015

≤0.003

Element(s)

B

Cu

Ca

Ta

Pb

Sn

Se

Content (wt.)

≤0.006

≤0.30

≤0.005

≤0.1

≤0.0005

≤0.005

≤0.0003

Element(s)

Bi

Ag

Te

Tl

O

N

Content (wt.)

≤0.00003

≤0.0005

≤0.00005

≤0.0001

≤0.0025

≤0.01

C. Polishing the consumable ingot by surface planing;

D. carrying out homogenization annealing;

heating the consumable ingot to 600 ℃, and preserving heat for 2 hours;

heating the consumable ingot to 1000 ℃ over 9 hours, and then preserving heat for 2 hours;

heating the consumable ingot to 1160 +/-10 ℃ for 4 hours, and then preserving the temperature for 25 hours;

heating the consumable ingot to 1190 +/-10 ℃ for 2 hours, and then preserving the heat for 50 hours;

cooling the consumable ingot to room temperature under a room temperature environment;

E. forging and processing;

heating the consumable ingot to 1110 +/-10 ℃ and forging for the first time;

then cooling to 1080 +/-20 ℃, and forging for the second time;

then cooling to 1060 +/-10 ℃, and forging for the third time;

then cooling to 1050 +/-10 ℃, forging for the fourth time, wherein the fourth forging deformation is not less than 30%, and preserving heat for 60-120 minutes after forging for the fourth time.

Preferably, the step E further comprises a fifth forging, wherein the forging temperature of the fifth forging is 750 ℃, the temperature of the consumable ingot is continuously reduced during the forging, and the forging temperature of the fifth forging is 300 ℃.

Preferably, in the step E, the forging machine for forging includes a V-shaped anvil and a hammer head, a water supply pipeline is disposed in the hammer head, a plurality of water spraying holes communicated with the water supply pipeline are disposed on the surface of the hammer head, and the V-shaped anvil is connected with a water discharging hole.

Preferably, a plurality of guide grooves are annularly arranged on the inner side wall of the water spraying hole, necking parts are arranged in the guide grooves, the included angle between the water outlet direction of the guide grooves and the axis of the water spraying hole is 45 degrees, a spherical filter screen is arranged at the water outlet end of the water spraying hole, the spherical filter screen protrudes towards the inside of the water spraying hole, and the edge of the spherical filter screen is hung at the water outlet of the guide grooves.

Preferably, a drainage groove is formed in the bottom of the V-shaped anvil base, the drainage hole is communicated with the bottom of the drainage groove, a plurality of first flow guide holes are formed in two sides of the drainage groove respectively, the top ends of the first flow guide holes are connected with the inner side wall of the V-shaped anvil base, the bottom ends of the first flow guide holes are connected with the drainage groove, a second flow guide hole communicated with the drainage groove is formed in the bottom of the V-shaped anvil base, and the inner diameter ratio of the first flow guide holes to the second flow guide holes is 3: 1.

Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: according to the invention, the regenerated material which is fully cleaned is used, so that the accuracy of the chemical components of the electrode of the vacuum induction furnace is greatly improved, and the chemical components of the GH4169 alloy finished product are well controlled. By improving the forging process and using a new process of 'heat preservation forging + cooling forging', the grain size structure of the bar finished product is more than or equal to grade 7, the range is less than or equal to grade 2, and the room temperature tensile property and the high temperature tensile property can reach the indexes of an aviation rotating piece. In order to ensure the technological requirements of cooling forging, the invention specially designs a forging mechanism. The cooling water is sprayed through the hammer head, so that the forging is uniformly and effectively cooled in the last stage of forging. The structure of the water spray holes can enable cooling water to form a uniform spray coverage area, and the spherical filter screen can effectively prevent impurities from blocking the water spray holes. The cooling water flows out from the diversion trench, and plays a role in cleaning the spherical filter screen, thereby ensuring the cleanness of the spherical filter screen. The water spraying adopts an excessive spraying mode, and the unevaporated cooling water uniformly flows on the surface of the V-shaped anvil through the first flow guide holes and the second flow guide holes, so that the V-shaped anvil is uniformly cooled.

Drawings

Fig. 1 is a structural view of a hammer head in the present invention.

FIG. 2 is a structural view of a spout of the present invention.

FIG. 3 is a block diagram of the V-anvil of the present invention.

In the figure: 1. a V-shaped anvil block; 2. a hammer head; 3. a water supply line; 4. a water spray hole; 5. a drain hole; 6. a diversion trench; 7. shrinking the neck part; 8. a spherical filter screen; 9. a water discharge tank; 10. a first flow guide hole; 11. and the second diversion hole.

Detailed Description

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.

Example 1

And (3) ingot type of the alloy ingot: phi 508mm, forging specification: phi 250mm, polishing, removing black skin to the specification of a finished product: phi 230 mm.

Ultrasonically cleaning a reclaimed GH4169 alloy, (1) frequency: 40-60 kHz; (2) power density: 0.5 to 2W/cm²(ii) a (3) Cleaning temperature: 30-40 ℃; (4) the cleaning solution comprises 12 wt% of sodium lauryl sulfate, 5 wt% of methyl amyl alcohol, 1.5 wt% of sulfuric acid and the balance of water; adopting 70 wt% GH4169 alloy reclaimed material. Firstly, raw materials are smelted through vacuum induction, then, the raw materials are remelted by using protective atmosphere electroslag, and finally, the raw materials are smelted by using vacuum consumable smelting to obtain a finished product.

Heating the consumable ingot to 600 ℃, and preserving heat for 2 hours;

heating the consumable ingot to 1000 ℃ over 9 hours, and then preserving heat for 2 hours;

heating the consumable ingot to 1160 +/-10 ℃ for 4 hours, and then preserving the temperature for 25 hours;

heating the consumable ingot to 1190 +/-10 ℃ for 2 hours, and then preserving the heat for 50 hours;

and cooling the consumable ingot to room temperature in a room temperature environment.

Heating the consumable ingot to 1110 +/-10 ℃ and forging for the first time;

then cooling to 1080 +/-20 ℃, and forging for the second time;

then cooling to 1060 +/-10 ℃, and forging for the third time;

then cooling to 1050 +/-10 ℃, forging for the fourth time, wherein the fourth forging deformation is not less than 30%, and preserving heat for 70 minutes after the fourth forging.

The performance index is

Example 2

And (3) ingot type of the alloy ingot: phi 508mm, forging specification: phi 260mm, polishing, removing black skin to the specification of a finished product: phi 240 mm.

Ultrasonically cleaning a reclaimed GH4169 alloy, (1) frequency: 40-60 kHz; (2) power density: 0.5 to 2W/cm²(ii) a (3) Cleaning temperature: 40-60 ℃; (4) the cleaning solution comprises 12 wt% of sodium lauryl sulfate, 5 wt% of methyl amyl alcohol, 1.5 wt% of sulfuric acid and the balance of water; adopting 70 wt% GH4169 alloy reclaimed material. Firstly, raw materials are smelted through vacuum induction, then, the raw materials are remelted by using protective atmosphere electroslag, and finally, the raw materials are smelted by using vacuum consumable smelting to obtain a finished product.

Heating the consumable ingot to 600 ℃, and preserving heat for 2 hours;

heating the consumable ingot to 1000 ℃ over 9 hours, and then preserving heat for 2 hours;

heating the consumable ingot to 1160 +/-10 ℃ for 4 hours, and then preserving the temperature for 25 hours;

heating the consumable ingot to 1190 +/-10 ℃ for 2 hours, and then preserving the heat for 50 hours;

and cooling the consumable ingot to room temperature in a room temperature environment.

Heating the consumable ingot to 1110 +/-10 ℃ and forging for the first time;

then cooling to 1080 +/-20 ℃, and forging for the second time;

then cooling to 1060 +/-10 ℃, and forging for the third time;

then cooling to 1050 +/-10 ℃, forging for the fourth time, wherein the fourth forging deformation is not less than 30%, and preserving heat for 70 minutes after the fourth forging;

and then cooling to 750 ℃, forging for the fifth time, and continuously cooling the consumable ingot in the forging process, wherein the forging finishing temperature of the fifth forging is 300 ℃.

The forging machine for forging comprises a V-shaped anvil block 1 and a hammer head 2, a water supply pipeline 3 is arranged in the hammer head 2, a plurality of water spray holes 4 communicated with the water supply pipeline 3 are formed in the surface of the hammer head 2, and the V-shaped anvil block 1 is connected with a water discharge hole 5. A plurality of guide grooves 6 are annularly arranged on the inner side wall of the water spray hole 4, a necking part 7 is arranged in each guide groove 6, the included angle between the water outlet direction of each guide groove 6 and the axis of the water spray hole 4 is 45 degrees, a spherical filter screen 8 is arranged at the water outlet end of each water spray hole 4, each spherical filter screen 8 protrudes towards the inside of each water spray hole 4, and the edge of each spherical filter screen 8 is hung at the water outlet of each guide groove 6. The bottom of the V-shaped anvil block 1 is provided with a water drainage groove 9, the water drainage hole 5 is communicated with the bottom of the water drainage groove 9, two sides of the water drainage groove 9 are respectively provided with a plurality of first flow guide holes 10, the top ends of the first flow guide holes 10 are connected with the inner side wall of the V-shaped anvil block 1, the bottom ends of the first flow guide holes 10 are connected with the water drainage groove 9, the bottom of the V-shaped anvil block 1 is provided with second flow guide holes 11 communicated with the water drainage groove 9, and the inner diameter ratio of the first flow guide holes 10 to the second flow guide holes 11 is 3: 1.

The performance index is

Example 3

And (3) ingot type of the alloy ingot: phi 508mm, forging specification: phi 250mm, polishing, removing black skin to the specification of a finished product: phi 220 mm. Ultrasonically cleaning a reclaimed GH4169 alloy, (1) frequency: 50-60 kHz; (2) power density: 2 to 3W/cm²(ii) a (3) Cleaning temperature: 30-50 ℃; (4) the cleaning solution comprises 12 wt% of sodium lauryl sulfate, 5 wt% of methyl amyl alcohol, 1.5 wt% of sulfuric acid and the balance of water; the method is carried out by adopting 70 wt% of GH4169 alloy reclaimed material. Firstly, raw materials are smelted through vacuum induction, then, the raw materials are remelted by using protective atmosphere electroslag, and finally, the raw materials are smelted by using vacuum consumable smelting to obtain a finished product.

Heating the consumable ingot to 600 ℃, and preserving heat for 2 hours;

heating the consumable ingot to 1000 ℃ over 9 hours, and then preserving heat for 2 hours;

heating the consumable ingot to 1160 +/-10 ℃ for 4 hours, and then preserving the temperature for 25 hours;

heating the consumable ingot to 1190 +/-10 ℃ for 2 hours, and then preserving the heat for 50 hours;

and cooling the consumable ingot to room temperature in a room temperature environment.

Heating the consumable ingot to 1110 +/-10 ℃ and forging for the first time;

then cooling to 1080 +/-20 ℃, and forging for the second time;

then cooling to 1060 +/-10 ℃, and forging for the third time;

then cooling to 1050 +/-10 ℃, forging for the fourth time, wherein the fourth forging deformation is not less than 30%, and preserving heat for 70 minutes after the fourth forging;

and then cooling to 750 ℃, forging for the fifth time, and continuously cooling the consumable ingot in the forging process, wherein the forging finishing temperature of the fifth forging is 300 ℃.

The forging machine for forging comprises a V-shaped anvil block 1 and a hammer head 2, a water supply pipeline 3 is arranged in the hammer head 2, a plurality of water spray holes 4 communicated with the water supply pipeline 3 are formed in the surface of the hammer head 2, and the V-shaped anvil block 1 is connected with a water discharge hole 5. A plurality of guide grooves 6 are annularly arranged on the inner side wall of the water spray hole 4, a necking part 7 is arranged in each guide groove 6, the included angle between the water outlet direction of each guide groove 6 and the axis of the water spray hole 4 is 45 degrees, a spherical filter screen 8 is arranged at the water outlet end of each water spray hole 4, each spherical filter screen 8 protrudes towards the inside of each water spray hole 4, and the edge of each spherical filter screen 8 is hung at the water outlet of each guide groove 6. The bottom of the V-shaped anvil block 1 is provided with a water drainage groove 9, the water drainage hole 5 is communicated with the bottom of the water drainage groove 9, two sides of the water drainage groove 9 are respectively provided with a plurality of first flow guide holes 10, the top ends of the first flow guide holes 10 are connected with the inner side wall of the V-shaped anvil block 1, the bottom ends of the first flow guide holes 10 are connected with the water drainage groove 9, the bottom of the V-shaped anvil block 1 is provided with second flow guide holes 11 communicated with the water drainage groove 9, and the inner diameter ratio of the first flow guide holes 10 to the second flow guide holes 11 is 3: 1.

The performance index is

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.