CN102319865A - Forging method for improving mechanical property of TC4 alloy blade - Google Patents
Forging method for improving mechanical property of TC4 alloy blade Download PDFInfo
- Publication number
- CN102319865A CN102319865A CN201110197708A CN201110197708A CN102319865A CN 102319865 A CN102319865 A CN 102319865A CN 201110197708 A CN201110197708 A CN 201110197708A CN 201110197708 A CN201110197708 A CN 201110197708A CN 102319865 A CN102319865 A CN 102319865A
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- solid
- forging
- state
- hydrogenated titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Forging (AREA)
Abstract
The invention relates to a forging method for improving the mechanical property of a TC4 alloy blade, which is used for solving the technical problem of poor mechanical strength in a traditional TC4 titanium alloy blade. The invention has the technical scheme that the forging method comprises the following steps of: carrying out solid hydrogen distributing treatment on the TC4 alloy; machining the obtained solid hydrogen distributing titanium alloy blank after treatment into a solid hydrogen distributing titanium alloy prefabricated blank; blowing sand and polishing; spraying a lubricating agent; heating before forging; forging the solid hydrogen distributing titanium alloy blank to obtain a solid hydrogen distributing titanium alloy blade forging piece; removing flash; blowing sand and polishing; and removing hydrogen. The TC4 titanium alloy is subjected to solid hydrogen distributing treatment, so that the tensile strength of the TC4 titanium alloy at room temperature is improved to be 1055-1065MPa from 925-985MPa in the background art; the yield strength of the TC4 titanium alloy at room temperature is improved to be 990-1000MPa from 884-945MPa in the background art; the tensile strength of the TC4 titanium alloy at 400DEG C is improved to be 700-710MPa from 630-675MPa in the background art; and the yield strength of the TC4 titanium alloy at 400DEG C is improved to be 605-615MPa from 593MPa in the background art.
Description
Technical field
The present invention relates to a kind of forging method of titanium alloy blade, specifically is a kind of forging method of the TC4 of raising alloy vane mechanical performance.
Background technology
Turbofan aerial engine fan operational condition is more abominable, and titanium alloy has specific strength height, series of advantages such as corrosion-resistant and high temperature resistant, and this makes titanium alloy obtain number of applications in the fan blade field.The specific strength height is the remarkable advantage of titanium alloy, and GJB2744-1996 has stipulated TC4 alloy forged piece mechanical performance index: room temperature tensile strength is not less than 895MPa, yield strength is not less than 825MPa; 400 ℃ of tensile strength is not less than 600MPa, yield strength is not less than 560MPa.
Document 1 " TC4 titanium alloy blade of gas turbine forging research; Li Xiaoqin; Zhu Xiping, aero-manufacturing technology, 2001; 2:53-54 " announces that it is that 925MPa, yield strength are 884MPa that the TC4 alloy vane forges back blade room temperature tensile strength, and 400 ℃ of tensile strength 644MPa of blade, yield strength are 593MPa.
Document 2 " TC4 titanium alloy fan rotor blade contour forging technique and performance study; Yu Xiaolu; Li Fuguo, forging technology, 2010; 3:19-21 " announces that it is that 950～985MPa, yield strength are 895～945MPa that the TC4 alloy vane forges back blade room temperature tensile strength, 400 ℃ of tensile strength 630～675MPa of blade.
Blade plays the key effect of power conversion in aero-engine, bear huge centrifugal force in the blade working, and the importance that improves the fan blade mechanical strength is self-evident.The mechanical performance that improves titanium alloy blade can improve the loop parameter of engine, can also be the blade loss of weight, and these are the effective ways that improve the engine thrust-weight ratio.Therefore, the mechanical performance of raising titanium alloy blade is the target that the titanium alloy blade technical field of forging continues pursuit always.
Summary of the invention
In order to overcome the deficiency of existing TC4 titanium alloy blade bad mechanical strength, the present invention provides a kind of forging method of the TC4 of raising alloy vane mechanical performance.This method is handled through the TC4 alloy being carried out the solid-state hydrogen of putting, and the optimization of smithing technological parameter, can improve the mechanical strength of TC4 titanium alloy blade.
Technical scheme of the present invention is: a kind of forging method of the TC4 of raising alloy vane mechanical performance is characterized in comprising the steps:
Step 1, with the TC4 alloy surface with acetone after, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3～1.5 * 10
-3Pa; Speed with 10～15 ℃/min is heated to 700～850 ℃, and insulation 10～15min charges into 0.2～0.5% hydrogen by the percentage by weight of TC4 alloy blank; The flow that charges into hydrogen is 0.5～1.5L/min; Insulation 2～3h is cooled to room temperature with the speed of 5～10 ℃/min, promptly obtains solid-state hydrogenated titanium alloy; Step 2, solid-state hydrogenated titanium alloy is machined into solid-state hydrogenated titanium alloy preform; Step 3, to carrying out blast and polishing is handled in solid-state hydrogenated titanium alloy preform surface; Step 4, at solid-state hydrogenated titanium alloy preform surface spraying glass lubricant; Step 5, forging mold is installed on the crank press, mold heated to 250～300 ℃ insulation; Step 6, the solid-state hydrogenated titanium alloy preform that will scribble glass lubricant are put into box resistance-heated furnace, and furnace temperature is 760～820 ℃, insulation 20～30min; Step 7, solid-state hydrogenated titanium alloy preform is shifted out from box resistance-heated furnace, be positioned on the counterdie of forging mold, solid-state hydrogenated titanium alloy preform is forged; Step 8, with solid-state hydrogenated titanium alloy blade forging place to go overlap; Step 9, to carrying out blast and polishing is handled in solid-state hydrogenated titanium alloy forging surface; Step 10, with behind the solid-state hydrogenated titanium alloy forging cleaning surfaces, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3～1.5 * 10
-3Pa is heated to 700～750 ℃ with the speed of 5～15 ℃/min, and vacuum is higher than 3 * 10 in the stove
-3Be incubated 2～3h behind the Pa, be cooled to room temperature with the speed of 5～10 ℃/min.
The invention has the beneficial effects as follows: handle because the TC4 alloy is carried out the solid-state hydrogen of putting; And the optimization of smithing technological parameter; The room temperature tensile strength that makes the TC4 titanium alloy is brought up to 1055～1065MPa by 925～985MPa of background technology, and the room temperature yield strength is brought up to 990～1000MPa by 884～945MPa of background technology; 400 ℃ of tensile strength are brought up to 700～710MPa by 630～675, and 400 ℃ of yield strengths are brought up to 605～615MPa by the 593MPa of background technology.
Below in conjunction with the specific embodiment the present invention is elaborated.
The specific embodiment
Embodiment 1:
Step 1, the solid-state hydrogen of putting: with the TC4 alloy periphery of φ 39mm * 262mm with acetone after, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3Pa is heated to 700 ℃ with the speed of 10 ℃/min, and insulation 10min charges into 0.5% hydrogen by the percentage by weight of titanium alloy blank, and the flow that charges into hydrogen is 0.5L/min, and insulation 3h is cooled to room temperature with the speed of about 10 ℃/min; Step 2, machining: solid-state hydrogenated titanium alloy is machined into solid-state hydrogenated titanium alloy preform; Step 3, blast and polishing: blast is carried out on solid-state hydrogenated titanium alloy preform surface handle with polishing; Step 4, spraying lubricant: make every effort to achieve board Ti-5D glass lubricant in spraying sky, solid-state hydrogenated titanium alloy preform surface; Step 5, installation mold and preheating: forging equipment is 2500 tons of crank presses; Device parameter is that the long 175mm of crank, length of connecting rod are that the stroke of 1050mm, slide block per minute is 60 times; Forging mold is installed on the crank press, with mold heated to 250 ℃ insulation; Heating before step 6, the forging: the solid-state hydrogenated titanium alloy preform that will scribble glass lubricant is put into box resistance-heated furnace, and furnace temperature is 760 ℃, insulation 30min; Step 7, forging: solid-state hydrogenated titanium alloy preform is shifted out from box resistance-heated furnace, be positioned on the counterdie of forging mold, solid-state hydrogenated titanium alloy preform is forged; Step 8, deflashing: with solid-state hydrogenated titanium alloy blade forging place to go overlap; Step 9, blast and polishing: blast is carried out on solid-state hydrogenated titanium alloy forging surface handle with polishing; Step 10, dehydrogenation: behind solid-state hydrogenated titanium alloy forging cleaning surfaces, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3Pa is heated to 700 ℃ with the speed of 5 ℃/min, and vacuum is higher than 3 * 10 in the stove
-3Be incubated 2h behind the Pa, be cooled to room temperature with the speed of 10 ℃/min.
Blade is carried out the tensile property test, and room temperature tensile strength is that 1055MPa, yield strength are 990MPa, and 400 ℃ of tensile strength are that 700MPa, yield strength are 605MPa.
Embodiment 2:
Step 1, the solid-state hydrogen of putting: with the TC4 alloy periphery of φ 39mm * 262mm with acetone after, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.5 * 10
-3Pa is heated to 850 ℃ with the speed of about 15 ℃/min, and insulation 10min charges into 0.2% hydrogen by the percentage by weight of titanium alloy blank, and the flow that charges into hydrogen is 1L/min, and insulation 2h is cooled to room temperature with the speed of about 5 ℃/min; Step 2, machining: solid-state hydrogenated titanium alloy is machined into solid-state hydrogenated titanium alloy preform; Step 3, blast and polishing: blast is carried out on solid-state hydrogenated titanium alloy preform surface handle with polishing; Step 4, spraying lubricant: make every effort to achieve board Ti-5D glass lubricant in spraying sky, solid-state hydrogenated titanium alloy preform surface; Step 5, installation mold and preheating: forging equipment is 2500 tons of crank presses; Device parameter is that the long 175mm of crank, length of connecting rod are that the stroke of 1050mm, slide block per minute is 65 times; Forging mold is installed on the crank press, with mold heated to 300 ℃ insulation; Heating before step 6, the forging: the solid-state hydrogenated titanium alloy preform that will scribble glass lubricant is put into box resistance-heated furnace, and furnace temperature is 820 ℃, insulation 20min; Step 7, forging: solid-state hydrogenated titanium alloy preform is shifted out from box resistance-heated furnace, be positioned on the counterdie of forging mold, solid-state hydrogenated titanium alloy preform is forged; Step 8, deflashing: with solid-state hydrogenated titanium alloy blade forging place to go overlap; Step 9, blast and polishing: blast is carried out on solid-state hydrogenated titanium alloy forging surface handle with polishing; Step 10, dehydrogenation: behind solid-state hydrogenated titanium alloy forging cleaning surfaces, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.5 * 10
-3Pa is heated to 750 ℃ with the speed of 15 ℃/min, and vacuum is higher than 3 * 10 in the stove
-3Be incubated 3h behind the Pa, be cooled to room temperature with the speed of 10 ℃/min.
Blade is carried out the tensile property test, and room temperature tensile strength is that 1065MPa, yield strength are 1000MPa, and 400 ℃ of tensile strength are that 710MPa, yield strength are 615MPa.
Embodiment 3:
Step 1, the solid-state hydrogen of putting: with the TC4 alloy periphery of φ 39mm * 262mm with acetone after, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3Pa is heated to 800 ℃ with the speed of about 10 ℃/min, and insulation 15min charges into 0.2% hydrogen by the percentage by weight of titanium alloy blank, and the flow that charges into hydrogen is 1.5L/min, and insulation 2h is cooled to room temperature with the speed of about 10 ℃/min; Step 2, machining: solid-state hydrogenated titanium alloy is machined into solid-state hydrogenated titanium alloy preform; Step 3, blast and polishing: blast is carried out on solid-state hydrogenated titanium alloy preform surface handle with polishing; Step 4, spraying lubricant: make every effort to achieve board Ti-5D glass lubricant in spraying sky, solid-state hydrogenated titanium alloy preform surface; Step 5, installation mold and preheating: forging equipment is 2500 tons of crank presses; Device parameter is that the long 175mm of crank, length of connecting rod are that the stroke of 1050mm, slide block per minute is 60 times; Forging mold is installed on the crank press, with mold heated to 250 ℃ insulation; Heating before step 6, the forging: the solid-state hydrogenated titanium alloy preform that will scribble glass lubricant is put into box resistance-heated furnace, and furnace temperature is 790 ℃, insulation 30min; Step 7, forging: solid-state hydrogenated titanium alloy preform is shifted out from box resistance-heated furnace, be positioned on the counterdie of forging mold, solid-state hydrogenated titanium alloy preform is forged; Step 8, deflashing: with solid-state hydrogenated titanium alloy blade forging place to go overlap; Step 9, blast and polishing: blast is carried out on solid-state hydrogenated titanium alloy forging surface handle with polishing; Step 10, dehydrogenation: behind solid-state hydrogenated titanium alloy forging cleaning surfaces, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3Pa is heated to 700 ℃ with the speed of 10 ℃/min, and vacuum is higher than 3 * 10 in the stove
-3Be incubated 2h behind the Pa, be cooled to room temperature with the speed of 10 ℃/min.
Blade is carried out the tensile property test, and room temperature tensile strength is that 1060MPa, yield strength are 995MPa, and 400 ℃ of tensile strength are that 710MPa, yield strength are 605MPa.
Can find out through above-mentioned instance: the hot strength of the TC4 alloy vane of manufacturing of the present invention reaches the requirement of GJB2744-1996, tensile strength and yield strength corresponding index in document 1 and the document 2.This shows that the solid-state hydrogen of putting is handled the mechanical performance that can significantly improve TC4 alloy forging blade.
Claims (1)
1. a forging method that improves TC4 alloy vane mechanical performance is characterized in that comprising the steps:
Step 1, with the TC4 alloy surface with acetone after, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3～1.5 * 10
-3Pa; Speed with 10～15 ℃/min is heated to 700～850 ℃, and insulation 10～15min charges into 0.2～0.5% hydrogen by the percentage by weight of TC4 alloy blank; The flow that charges into hydrogen is 0.5～1.5L/min; Insulation 2～3h is cooled to room temperature with the speed of 5～10 ℃/min, promptly obtains solid-state hydrogenated titanium alloy;
Step 2, solid-state hydrogenated titanium alloy is machined into solid-state hydrogenated titanium alloy preform;
Step 3, to carrying out blast and polishing is handled in solid-state hydrogenated titanium alloy preform surface;
Step 4, at solid-state hydrogenated titanium alloy preform surface spraying glass lubricant;
Step 5, forging mold is installed on the crank press, mold heated to 250～300 ℃ insulation;
Step 6, the solid-state hydrogenated titanium alloy preform that will scribble glass lubricant are put into box resistance-heated furnace, and furnace temperature is 760～820 ℃, insulation 20～30min;
Step 7, solid-state hydrogenated titanium alloy preform is shifted out from box resistance-heated furnace, be positioned on the counterdie of forging mold, solid-state hydrogenated titanium alloy preform is forged;
Step 8, with solid-state hydrogenated titanium alloy blade forging place to go overlap;
Step 9, to carrying out blast and polishing is handled in solid-state hydrogenated titanium alloy forging surface;
Step 10, with behind the solid-state hydrogenated titanium alloy forging cleaning surfaces, insert that tubular type is solid-state puts in the hydrogen stove, be evacuated down to 1.0 * 10
-3～1.5 * 10
-3Pa is heated to 700～750 ℃ with the speed of 5～15 ℃/min, and vacuum is higher than 3 * 10 in the stove
-3Be incubated 2～3h behind the Pa, be cooled to room temperature with the speed of 5～10 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110197708A CN102319865A (en) | 2011-07-14 | 2011-07-14 | Forging method for improving mechanical property of TC4 alloy blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110197708A CN102319865A (en) | 2011-07-14 | 2011-07-14 | Forging method for improving mechanical property of TC4 alloy blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102319865A true CN102319865A (en) | 2012-01-18 |
Family
ID=45447768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110197708A Pending CN102319865A (en) | 2011-07-14 | 2011-07-14 | Forging method for improving mechanical property of TC4 alloy blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102319865A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580874A (en) * | 2018-05-15 | 2018-09-28 | 南京尚吉增材制造研究院有限公司 | Hydrogen processing method is set for improve increasing material manufacturing titanium alloy microstructure |
| CN110202015A (en) * | 2019-07-15 | 2019-09-06 | 太原科技大学 | A kind of method of the compound near-net-shape of titanium alloy thin wall profile extrusion drawing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202389A (en) * | 1988-02-05 | 1989-08-15 | Hitachi Ltd | Manufacture of steam turbine long blade |
| CN1048994A (en) * | 1989-10-18 | 1991-02-06 | 航空工业部红原锻铸厂 | Large-size steam turbine titanium alloy linear leaf forging and device |
| US6754954B1 (en) * | 2003-07-08 | 2004-06-29 | Borgwarner Inc. | Process for manufacturing forged titanium compressor wheel |
| CN101648254A (en) * | 2009-08-28 | 2010-02-17 | 哈尔滨工业大学 | Process for forging hydrogenated titanium alloy forging blade |
| CN102052342A (en) * | 2009-10-29 | 2011-05-11 | 北京有色金属研究总院 | Titanium alloy integral bladed disc and manufacturing method thereof |
-
2011
- 2011-07-14 CN CN201110197708A patent/CN102319865A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202389A (en) * | 1988-02-05 | 1989-08-15 | Hitachi Ltd | Manufacture of steam turbine long blade |
| CN1048994A (en) * | 1989-10-18 | 1991-02-06 | 航空工业部红原锻铸厂 | Large-size steam turbine titanium alloy linear leaf forging and device |
| US6754954B1 (en) * | 2003-07-08 | 2004-06-29 | Borgwarner Inc. | Process for manufacturing forged titanium compressor wheel |
| CN101648254A (en) * | 2009-08-28 | 2010-02-17 | 哈尔滨工业大学 | Process for forging hydrogenated titanium alloy forging blade |
| CN102052342A (en) * | 2009-10-29 | 2011-05-11 | 北京有色金属研究总院 | Titanium alloy integral bladed disc and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580874A (en) * | 2018-05-15 | 2018-09-28 | 南京尚吉增材制造研究院有限公司 | Hydrogen processing method is set for improve increasing material manufacturing titanium alloy microstructure |
| CN108580874B (en) * | 2018-05-15 | 2019-07-23 | 南京尚吉增材制造研究院有限公司 | Hydrogen processing method is set for improve increasing material manufacturing titanium alloy microstructure |
| CN110202015A (en) * | 2019-07-15 | 2019-09-06 | 太原科技大学 | A kind of method of the compound near-net-shape of titanium alloy thin wall profile extrusion drawing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107058877B (en) | A kind of low temperature environment wind power flange production method | |
| CN102851479B (en) | Heat treatment technology of high-strength bolt | |
| CN101648254B (en) | Process for forging hydrogenated titanium alloy forging blade | |
| CN101684519B (en) | Method for improving heat treatment deformation of thin-wall light narrow series bearing ring | |
| CN102534518B (en) | Backboard fabricating method | |
| CN102513799A (en) | Ring rolling method for flange of megawatt wind generation set tower | |
| CN102554114A (en) | Ring forging and rolling processing method of bearing ring parts used for large-scale wind turbine unit | |
| CN102319864A (en) | Forging method for reducing forging temperature of TC4 alloy blade | |
| CN103589948B (en) | Carbon aluminium-killed steel heat zinc coating plate and production method thereof | |
| CN102266901A (en) | Forging method capable of reducing deformation resistance of TC4 titanium alloy blade | |
| CN103071749A (en) | Method for machining forklift pallet fork | |
| CN102836946B (en) | Roll forging forming process for last stage of moving blade of 600MW unit steam turbine | |
| CN104694861A (en) | Forging and thermal treatment method of GH4169G alloy | |
| CN102319865A (en) | Forging method for improving mechanical property of TC4 alloy blade | |
| CN105562573A (en) | Optimization method for hydrogenated TC4 titanium alloy forging technology parameters | |
| CN103882358A (en) | Forging and heat treatment method for TC4 titanium alloy | |
| CN103357865B (en) | A kind of enhancing mixes titanium powder metallurgical material and preparation method thereof | |
| CN103846634A (en) | Method for forging single-throw crank shaft | |
| CN104561460A (en) | Production process of novel leaf springs | |
| CN102719656A (en) | Heat treatment process for preventing cold work die steel wire cutting cracking | |
| CN105154893A (en) | Die heat treatment process for enhancing hardness of die | |
| CN104439999A (en) | Manufacturing method of highly wear-resisting hammer upper die forging upper die | |
| CN102886644A (en) | Method for manufacturing high-strength pin shaft | |
| CN1330779C (en) | Heat treating trimming method for large-scale bearing ring | |
| CN108034798B (en) | A kind of heat treatment method reducing 2Cr12Ni4Mo3VNbN turbine blade yield tensile ratio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120118 |