CN115383085A - Production process of hot-rolled large-diameter thin-wall titanium alloy seamless pipe - Google Patents
Production process of hot-rolled large-diameter thin-wall titanium alloy seamless pipe Download PDFInfo
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- CN115383085A CN115383085A CN202210991837.1A CN202210991837A CN115383085A CN 115383085 A CN115383085 A CN 115383085A CN 202210991837 A CN202210991837 A CN 202210991837A CN 115383085 A CN115383085 A CN 115383085A
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 124
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000005266 casting Methods 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000005242 forging Methods 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000010791 quenching Methods 0.000 claims abstract description 33
- 230000000171 quenching effect Effects 0.000 claims abstract description 33
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010936 titanium Substances 0.000 claims abstract description 18
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 18
- 230000004927 fusion Effects 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 238000001192 hot extrusion Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
Abstract
The invention discloses a production process of a hot-rolled large-caliber thin-wall titanium alloy seamless pipe, which relates to the field of titanium alloy seamless pipe production, and comprises a first conveyor belt, a fusion casting machine, a forging press, a quenching machine, a circular pipe casting machine, a low-temperature cold air cooling machine and a second conveyor belt, and comprises the following steps: step one, screening a titanium metal blank; placing the screened titanium metal blank on a first conveyor belt; and step three, conveying the blank into a casting furnace of the fusion casting machine through a first conveyor belt. The metal liquid transfer mechanical arm pours titanium alloy liquid onto a forging pressing platform of a forging press, the titanium alloy liquid forms a semi-solidified state, the semi-solidified titanium alloy liquid is forged and pressed by the forging press, impurities of the semi-solidified titanium alloy liquid are forged and pressed until the surface of the titanium alloy liquid falls off, the semi-solidified titanium alloy liquid is purified, and the strength and the corrosion resistance of the large-caliber thin-wall titanium alloy seamless pipe manufactured by the purified titanium alloy liquid are improved.
Description
Technical Field
The invention relates to the technical field of titanium alloy seamless pipe production, in particular to a production process of a hot-rolled large-caliber thin-wall titanium alloy seamless pipe.
Background
The production process of the titanium alloy seamless pipe in the current market comprises a hot extrusion cold-drawing process and a hot rolling process, wherein the hot extrusion cold-drawing process enables the product to be shorter in length and lower in yield, and the hot rolling process generally needs to fuse titanium metal and other metals to form titanium alloy, and the titanium alloy is used for casting the seamless pipe.
The production process of the hot-rolled large-caliber thin-wall titanium alloy seamless pipe in the market has the defects that titanium metal is not easy to fuse with other metals, impurities in the fused titanium alloy liquid are more, the surface strength and the corrosion resistance of the large-caliber thin-wall titanium alloy seamless pipe manufactured by using the titanium alloy liquid with more impurities are poorer, and secondly, the titanium reacts with carbon, hydrogen, nitrogen and oxygen at high temperature to change the tissue structure of the titanium alloy seamless pipe, so that the physical and chemical characteristics of the titanium alloy seamless pipe are influenced, and the hardness of the titanium alloy seamless pipe is difficult to manufacture the large-caliber thin-wall titanium alloy seamless pipe, so the existing production process of the hot-rolled large-caliber thin-wall titanium alloy seamless pipe is improved.
Disclosure of Invention
The invention aims to provide a production process of a hot-rolled large-diameter thin-wall titanium alloy seamless pipe, which aims to solve the problems that titanium alloy liquid obtained by fusing titanium metal and other metals in the market at present contains more impurities, and the hardness of titanium reacts with carbon, hydrogen, nitrogen and oxygen at high temperature to be difficult to manufacture the large-diameter thin-wall titanium alloy seamless pipe.
In order to achieve the purpose, the invention provides the following technical scheme: a production process of a hot-rolled large-caliber thin-wall titanium alloy seamless pipe comprises a first conveyor belt, a fusion casting machine, a forging press, a quenching machine, a circular pipe casting machine, a low-temperature cold air cooling machine and a second conveyor belt, and comprises the following steps:
step one, screening a titanium metal blank;
placing the screened titanium metal blank on a first conveyor belt;
step three, conveying the blank into a casting furnace of a fusion casting machine through a first conveyor belt;
step four, conveying other metal components into the casting furnace according to the proportion;
step five, fusing titanium metal and other metals through a casting furnace to form titanium alloy liquid;
pouring the titanium alloy liquid into a forging press to form a titanium alloy semi-solidified body, and quickly discharging impurities in the titanium alloy semi-solidified body in a forging and pressing mode;
step seven, conveying the forged titanium alloy into a quenching machine for quenching;
step eight, conveying the quenched titanium alloy to a circular tube casting machine to cast a titanium alloy tube;
step nine, cooling the titanium alloy pipe which is just manufactured by a low-temperature cold air cooling machine;
and step ten, conveying the titanium alloy pipe to a sawing process through a second conveying belt.
Preferably, a fusion casting machine is installed at one end of the first conveyor belt, a forging press is installed on one side of the fusion casting machine, and a metal liquid transfer mechanical arm is installed inside the forging press.
Preferably, a quenching machine is installed on one side of the forging press, a quenching bath is arranged inside the quenching machine, and a transfer mechanical arm is installed inside the quenching machine.
Preferably, a circular tube casting machine is arranged on one side of the quenching machine, which is far away from the forging press, and a melting furnace is arranged inside the circular tube casting machine.
Preferably, a low-temperature cold air cooler is mounted on one side of the round tube casting machine, and a second conveyor belt extending to the outer side of the low-temperature cold air cooler is mounted inside the low-temperature cold air cooler.
Compared with the prior art, the invention has the beneficial effects that:
1. the molten titanium alloy liquid in the fusion casting machine is taken out through a metal liquid transfer mechanical arm, the metal liquid transfer mechanical arm pours the titanium alloy liquid onto a forging table of a forging press, the titanium alloy liquid is in a semi-solidification state, the semi-solidified titanium alloy liquid is forged and pressed through the forging press, impurities of the semi-solidified titanium alloy liquid are forged and pressed until the surface of the titanium alloy liquid falls off, the semi-solidified titanium alloy liquid is purified, and the strength and the corrosion resistance of the large-caliber thin-wall titanium alloy seamless pipe manufactured through the purified titanium alloy liquid are improved.
2. The semi-solidified titanium alloy liquid after the forging pressing in the forging press is moved to the inside of the quenching machine through the transfer mechanical wall clamp, the semi-solidified titanium alloy liquid is pushed downwards into the quenching tank by the transfer mechanical wall to be quenched, austenite in the titanium alloy is converted into martensite, the hardness of the titanium alloy is improved, and the large-diameter thin-wall titanium alloy seamless pipe cannot deform due to the thin wall.
3. The titanium alloy is conveyed to the interior of a melting furnace of a circular tube casting machine by a quenching machine, the melting furnace carries out secondary melting on the titanium alloy, the melted titanium alloy is used for manufacturing a large-caliber thin-wall titanium alloy seamless tube through the circular tube casting machine, the titanium alloy is subjected to a tempering process through the melting furnace, and the titanium alloy is tempered to reduce the internal stress and the brittleness.
4. After the large-diameter thin-wall titanium alloy seamless pipe is manufactured by the circular pipe casting machine, the temperature of the large-diameter thin-wall titanium alloy seamless pipe is too high, the large-diameter thin-wall titanium alloy seamless pipe is rapidly cooled by the low-temperature cold air cooling machine, the probability of deformation of the surface of the large-diameter thin-wall titanium alloy seamless pipe is reduced, and meanwhile the hardness of the large-diameter thin-wall titanium alloy seamless pipe is effectively improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a process flow diagram of the present invention;
FIG. 3 is a flow chart of the casting of the titanium alloy tube of the present invention.
In the figure: 1. a first conveyor belt; 2. fusing the casting machine; 3. forging press; 4. a quenching machine; 5. a circular tube casting machine; 6. a low-temperature cold air cooling machine; 7. a second conveyor belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a production process of a hot-rolled large-caliber thin-wall titanium alloy seamless tube comprises a first conveyor belt 1, a fusion casting machine 2, a forging press 3, a quenching machine 4, a circular tube casting machine 5, a low-temperature cold air cooling machine 6 and a second conveyor belt 7, and comprises the following steps:
step one, screening a titanium metal blank;
step two, placing the screened titanium metal blank on a first conveyor belt 1;
step three, conveying the blank into a casting furnace of a fusion casting machine 2 through a first conveyor belt 1;
step four, conveying other metal components into the casting furnace according to the proportion;
step five, fusing titanium metal and other metals through a casting furnace to form titanium alloy liquid;
pouring the titanium alloy liquid into a forging press 3 to form a titanium alloy semi-solidified body, and quickly discharging impurities in the titanium alloy semi-solidified body in a forging and pressing mode;
step seven, the forged titanium alloy is conveyed into a quenching machine 4 for quenching;
step eight, conveying the quenched titanium alloy into a circular tube casting machine 5 to cast a titanium alloy tube;
step nine, cooling the titanium alloy pipe which is just manufactured by the low-temperature cold air cooling machine 6;
step ten, conveying the titanium alloy pipe to a sawing process through a second conveying belt 7.
The device comprises a first conveyor belt 1, a fusion casting machine 2 is installed at one end of the first conveyor belt 1, a forging press 3 is installed on one side of the fusion casting machine 2, and a metal liquid transfer mechanical arm is installed inside the forging press 3.
In specific implementation, the molten titanium alloy liquid in the fusion casting machine 2 is taken out through a metal liquid transfer mechanical arm, the metal liquid transfer mechanical arm pours the titanium alloy liquid onto a forging table of a forging press 3, the titanium alloy liquid is in a semi-solidification state, the semi-solidified titanium alloy liquid is forged and pressed through the forging press 3, impurities of the semi-solidified titanium alloy liquid are forged and pressed to fall off the surface of the titanium alloy liquid, the semi-solidified titanium alloy liquid is purified, and the strength and the corrosion resistance of the large-caliber thin-wall titanium alloy seamless pipe manufactured through the purified titanium alloy liquid are improved.
A quenching machine 4 is installed on one side of the forging press 3, a quenching bath is arranged inside the quenching machine 4, and a transfer mechanical arm is installed inside the quenching machine 4.
In specific implementation, the semi-solidified titanium alloy liquid after the forging pressing inside the forging press 3 is clamped by the transfer mechanical wall and moved to the inside of the quenching machine 4, the transfer mechanical wall descends and pushes the semi-solidified titanium alloy liquid into a quenching pool for quenching, so that austenite in the titanium alloy is converted into martensite, the hardness of the titanium alloy is improved, and the large-caliber thin-wall titanium alloy seamless pipe cannot deform due to the thin wall.
A circular tube casting machine 5 is arranged on one side of the quenching machine 4 far away from the forging press 3, and a melting furnace is arranged inside the circular tube casting machine 5.
In specific implementation, the titanium alloy is conveyed to the interior of a melting furnace of the circular tube casting machine 5 by the quenching machine 4, the titanium alloy is secondarily melted by the melting furnace, the melted titanium alloy is used for manufacturing the large-caliber thin-wall titanium alloy seamless tube through the circular tube casting machine 5, the titanium alloy is subjected to a tempering process through the melting furnace, and the titanium alloy is tempered to reduce internal stress and reduce brittleness.
And a low-temperature cold air cooling machine 6 is installed on one side of the circular tube casting machine 5, and a second conveying belt 7 extending to the outer side of the low-temperature cold air cooling machine 6 is installed inside the low-temperature cold air cooling machine 6.
In specific implementation, after the large-diameter thin-wall titanium alloy seamless pipe is manufactured by the circular pipe casting machine 5, the temperature of the large-diameter thin-wall titanium alloy seamless pipe is too high, the large-diameter thin-wall titanium alloy seamless pipe is rapidly cooled by the low-temperature cold air cooling machine 6, the probability of surface deformation of the large-diameter thin-wall titanium alloy seamless pipe is reduced, and meanwhile the hardness of the large-diameter thin-wall titanium alloy seamless pipe is effectively improved.
In summary, the following steps: the screened titanium metal blank is placed on a first conveyor belt 1, the blank is conveyed into a casting furnace of a fusion casting machine 2 by the first conveyor belt 1, the titanium metal and other metals are fused by the casting furnace to form titanium alloy liquid, the titanium alloy liquid is poured into a forging press 3 to form a titanium alloy semi-solidified body, impurities in the titanium alloy semi-solidified body are quickly discharged by the forging press 3, the titanium alloy semi-solidified body is quenched by a quenching machine 4, the quenched titanium alloy is cast into a titanium alloy pipe by a circular pipe casting machine 5, and the large-caliber thin-wall titanium alloy seamless pipe is quenched, so that the hardness of the large-caliber thin-wall titanium alloy seamless pipe is improved, and the probability of deformation of the large-caliber thin-wall titanium alloy seamless pipe due to thin walls is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.
Claims (5)
1. The production process of the hot-rolled large-caliber thin-wall titanium alloy seamless pipe comprises a first conveyor belt (1), a fusion casting machine (2), a forging press (3), a quenching machine (4), a circular pipe casting machine (5), a low-temperature cold air cooling machine (6) and a second conveyor belt (7), and is characterized by comprising the following steps of:
step one, screening a titanium metal blank;
step two, placing the screened titanium metal blank on a first conveyor belt (1);
step three, conveying the blank into a casting furnace of a fusion casting machine (2) through a first conveyor belt (1);
step four, conveying other metal components into the casting furnace according to the proportion;
step five, fusing titanium metal and other metals through a casting furnace to form titanium alloy liquid;
pouring the titanium alloy liquid into a forging press (3) to form a titanium alloy semi-solidified body, and quickly discharging impurities in the titanium alloy semi-solidified body in a forging and pressing mode;
step seven, the forged titanium alloy is conveyed into a quenching machine (4) to be quenched;
step eight, conveying the quenched titanium alloy into a circular tube casting machine (5) to cast a titanium alloy tube;
step nine, cooling the titanium alloy pipe which is just manufactured by a low-temperature cold air cooling machine (6);
step ten, conveying the titanium alloy pipe to a sawing process through a second conveyor belt (7).
2. The production process of the hot-rolled large-caliber thin-wall titanium alloy seamless tube according to claim 1, characterized in that: the device comprises a first conveyor belt (1), a fusion casting machine (2) is installed at one end of the first conveyor belt (1), a forging machine (3) is installed on one side of the fusion casting machine (2), and a metal liquid transfer mechanical arm is installed inside the forging machine (3).
3. The production process of the hot-rolled large-caliber thin-wall titanium alloy seamless tube according to claim 2, characterized in that: a quenching machine (4) is installed on one side of the forging press (3), a quenching bath is arranged inside the quenching machine (4), and a transfer mechanical arm is installed inside the quenching machine (4).
4. The production process of the hot-rolled large-caliber thin-wall titanium alloy seamless tube according to claim 3, characterized in that: a circular tube casting machine (5) is arranged on one side, away from the forging press (3), of the quenching machine (4), and a melting furnace is arranged inside the circular tube casting machine (5).
5. The production process of the hot-rolled large-caliber thin-wall titanium alloy seamless tube according to claim 4, characterized in that: a low-temperature cold air cooler (6) is installed on one side of the circular tube casting machine (5), and a second conveying belt (7) extending to the outer side of the low-temperature cold air cooler (6) is installed inside the low-temperature cold air cooler (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210991837.1A CN115383085A (en) | 2022-08-17 | 2022-08-17 | Production process of hot-rolled large-diameter thin-wall titanium alloy seamless pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210991837.1A CN115383085A (en) | 2022-08-17 | 2022-08-17 | Production process of hot-rolled large-diameter thin-wall titanium alloy seamless pipe |
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| CN115383085A true CN115383085A (en) | 2022-11-25 |
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| CN202210991837.1A Pending CN115383085A (en) | 2022-08-17 | 2022-08-17 | Production process of hot-rolled large-diameter thin-wall titanium alloy seamless pipe |
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2022
- 2022-08-17 CN CN202210991837.1A patent/CN115383085A/en active Pending
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Application publication date: 20221125 |