CN103447768B - The preparation method of GH4169 alloy large-size odd-shaped cross section ring base - Google Patents
The preparation method of GH4169 alloy large-size odd-shaped cross section ring base Download PDFInfo
- Publication number
- CN103447768B CN103447768B CN201310377203.8A CN201310377203A CN103447768B CN 103447768 B CN103447768 B CN 103447768B CN 201310377203 A CN201310377203 A CN 201310377203A CN 103447768 B CN103447768 B CN 103447768B
- Authority
- CN
- China
- Prior art keywords
- ring base
- section ring
- odd
- shaped cross
- base
- 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.)
- Active
Links
Abstract
The preparation method that the invention discloses a kind of GH4169 alloy large-size odd-shaped cross section ring base, after the steps include: with certain mode of heating, GH4169 alloy bar material is heated to 1100 ± 10 DEG C, through jumping-up, punching, the rectangular section rings base of roll off；It is expanded into an odd-shaped cross section ring base again with 34～36MN pressure；It is expanded into secondary odd-shaped cross section ring base again with the pressure of 32～35MN；Again with the pressure of 20～26MN extremely concordant with loose tool for the upper end free compression of the secondary odd-shaped cross section ring base exceeding loose tool, obtain final odd-shaped cross section ring base.The method can effectively reduce the forming pressure needed for base, can effectively control the flow direction of technique clout, it is ensured that the forming dimension of intermediate blank simultaneously.The method is applicable to the preparation of large scale special-shaped section ring parts intermediate blank.
Description
Technical field
The present invention relates to the blank-making method of a kind of annular forging piece, the preparation method having particularly related to a kind of GH4169 alloy large-size odd-shaped cross section ring base.
Background technology
The looping mill rolling technology of annular forging piece is the FMT of a kind of advanced person, now reaches its maturity, and the size of annular forging piece is also do bigger and bigger, and shape also becomes increasingly complex.Wanting to obtain that geomery is qualified, the annular forging piece of function admirable, it it is critical only that the rational intermediate blank of making.
Disclosed on 08 22nd, 2007, Chinese invention patent description CN101020284A (application number: 200710077667.1) discloses the blank-making method of the large scale special-shaped section rings base of high temperature alloy, the blank-making technology that this patent adopts is: jumping-up, punching on forging press, the rectangular ring base of roll off on looping mill；Straight-flanked ring base being put into again and be placed on bulging die base plate in the epimorph of bulging die, apply pressure and interior shape mould and the epimorph extruding matched moulds of bulging die are made rectangle cross-section ring base deform and be full of the die cavity of whole bulging die, the demoulding obtains odd-shaped cross section ring base.Adopt this technique base, after matched moulds, the inner chamber of shape mould is completely enclosed, when producing the ring of big heavy type, difficult deformation, such as the low-pressure turbine casing odd-shaped cross section ring forging that material is GH4169 alloy, reach 100MN(at the instantaneous pressure maximum of matched moulds and be equivalent to the pressure of 10000 tons) more than, and the domestic producer having up to ten thousand tons of forging equipments is considerably less, most of producers have no ability to produce this big heavy forging special-shape ring.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of semienclosed loose tool forging blank-making method, realize the preparation of GH4169 alloy large-size odd-shaped cross section ring base, the method can effectively reduce the forming pressure needed for base, can effectively control the flow direction of technique clout, it is ensured that the forming dimension of intermediate blank and mechanical property simultaneously.
For solving above-mentioned technical problem, the preparation method of GH4169 alloy large-size odd-shaped cross section ring base of the present invention, its technical scheme comprises the following steps:
The first step, by GH4169 alloy bar material with the temperature shove charge less than or equal to 750 DEG C, and heats to 850 DEG C of insulations, and temperature retention time is:Being again heated to 985 DEG C of insulations, temperature retention time is:Being again heated to 1100 ± 10 DEG C of insulations, temperature retention time is:
Second step, by the GH4169 alloy bar material of described heating, good heat insulation, through jumping-up, punching, the rectangular section rings base of roll off.
3rd step, loads described rectangle cross-section ring base in loose tool, and operation forging press is with F1It is that the pressure of 34～36MN is by bulging drift press-in rectangle cross-section ring base less for tapering, rectangle cross-section ring base is carried out first time bulging, rectangle cross-section ring base is expanded into bell mouth shape, simultaneously completes the shaping that odd-shaped cross section ring base is got out of a predicament or an embarrassing situation, obtain an odd-shaped cross section ring base.
4th step, takes out the bulging drift that tapering is less, changes the bulging drift that tapering is bigger into, and operation forging press is with F2Being in bulging drift the odd-shaped cross section ring base of press-in that the pressure tapering of 32～35MN is bigger, an odd-shaped cross section ring base is carried out second time bulging, the inclined-plane completing odd-shaped cross section ring base shapes, and obtains secondary odd-shaped cross section ring base.
5th step, operation forging press is with F3Be the pressure of 20～26MN exceeding the upper end free compression of secondary odd-shaped cross section ring base of loose tool to concordant with loose tool, complete the shaping that odd-shaped cross section ring base is topped bar, obtain final odd-shaped cross section ring base.
In said method, described odd-shaped cross section ring base is got out of a predicament or an embarrassing situation and the shaping on inclined-plane belongs to closed forging, and tops bar and belong to semi-enclosed forging, and therefore, this odd-shaped cross section ring base monolithic molding belongs to semi-enclosed forging.
Compared with prior art, beneficial effects of the present invention is as follows:
The preparation method of GH4169 alloy large-size odd-shaped cross section ring base of the present invention, the method adopts semiclosed loose tooling forging to the getting out of a predicament or an embarrassing situation of intermediate blank, inclined-plane, point three steps shapings of topping bar, namely get out of a predicament or an embarrassing situation and when inclined-plane shapes, mould and forging fully in contact with, belonging to is closed forging；And top bar shaping time, mould and forging are incomplete contact betweens, and belonging to is semi-enclosed forging.It is finally shaped owing to topping bar, and be again semi-enclosed forging, process allowance is made to concentrate on place of topping bar, and the space that unnecessary process allowance takies need not be limited, effectively reduce the forming pressure needed for base, can effectively control the flow direction of technique clout, it is ensured that the forming dimension of intermediate blank simultaneously.After tested, the method often walks the maximum pressure value of shaping stage and is respectively less than or is equal to 36MN, is suitable for China overwhelming majority completely and forges the equipment requirements of producer.
The odd-shaped cross section ring base of GH4169 alloy prepared by employing said method, after finish to gauge shapes, forging ' s block dimension meets technology requirement, without misrun phenomenon；After forging heat treatment, after tested, its property indices is as follows:
Room temperature tensile properties: tensile strength is 1371MPa, yield strength is 1192MPa, and percentage elongation is 18.5%, and the contraction percentage of area is 36%.
600 DEG C of tensile properties: tensile strength is 1112MPa, yield strength is 983MPa, and percentage elongation is 20%, and the contraction percentage of area is 42%.
The test structure of above properties is satisfied by technical specification.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is odd-shaped cross section ring base horn mouth and forming process schematic diagram of getting out of a predicament or an embarrassing situation.
Fig. 2 is odd-shaped cross section ring base inclined-plane forming process schematic diagram.
Fig. 3 is that odd-shaped cross section ring base is topped bar forming process schematic diagram.
Fig. 4 is odd-shaped cross section ring blank structure schematic diagram.
Detailed description of the invention
The preparation method implementing GH4169 alloy large-size odd-shaped cross section ring base of the present invention, it is desirable to provide the equipment such as forging press, looping mill, high-temperature electric resistance furnace.The low-pressure turbine casing odd-shaped cross section ring forging being GH4169 alloy for China's material trademark below describes the detailed description of the invention of the method in detail.
The preparation method processing step of this alloy large-size odd-shaped cross section ring base is as follows:
Step 1: blanking.nullAccording to certain specification blanking，Raw material is GH4169 alloy，Its main chemical elements content (percentage by weight) is: C content≤0.08%、17.0%～21.0% is measured containing Cr、Ni content 50.0%～55.0%、≤ 1.0% is measured containing Co、2.80%～3.30% is measured containing Mo、0.30%～0.70% is measured containing Al、0.75%～1.15% is measured containing Ti、4.75%～5.50% is measured containing Nb、≤ 0.006% is measured containing B、≤ 0.01% is measured containing Mg、≤ 0.35% is measured containing Mn、Si content≤0.35%、P content≤0.015%、≤ 0.015% is measured containing S、≤ 0.30% is measured containing Cu、≤ 0.01% is measured containing Ca、≤ 0.0005% is measured containing Pb、≤ 0.0003% is measured containing Se、Surplus is Fe.
Step 2: heating.By GH4169 alloy bar material with the temperature shove charge less than or equal to 750 DEG C, and heating to 850 DEG C of insulations, temperature retention time is:Being again heated to 985 DEG C of insulations, temperature retention time is:Being again heated to 1100 ± 10 DEG C of insulations, temperature retention time is:
Step 3: jumping-up, punching, roll off.By the GH4169 alloy bar material of heating, good heat insulation, through jumping-up, punching, the rectangular section rings base 10 of roll off.
Step 4: odd-shaped cross section ring base horn mouth and shaping of getting out of a predicament or an embarrassing situation.Rectangle cross-section ring base 10 is loaded in loose tool 4, loose tool 4 is integrally fixed on the lower anvil block 6 of forging press, the bulging drift 2 selecting tapering less is placed in rectangle cross-section ring base 10 upper end, for ensureing that drift 2 can be fully pressed to the end, make to get out of a predicament or an embarrassing situation and be fully formed, a cushion block 7 has been put, as it is shown in figure 1, operation forging press is with F on drift 21It is that the pressure of 34～36MN makes anvil block 5 be pressed downward against cushion block 7, bulging drift 2 is pressed in rectangle cross-section ring base 10, rectangle cross-section ring base 10 is carried out first time bulging, rectangle cross-section ring base 10 is expanded into bell mouth shape, simultaneously complete the shaping that odd-shaped cross section ring base is got out of a predicament or an embarrassing situation, obtain an odd-shaped cross section ring base 11.
Step 5: odd-shaped cross section ring base inclined-plane shapes.Take out the bulging drift 2 that tapering is less, change the bulging drift 3 that tapering is bigger into, as in figure 2 it is shown, with step 3, operation forging press is with F2It is that the pressure of 32～35MN makes anvil block 5 be pressed downward against cushion block 7, bulging drift 3 is pressed in an odd-shaped cross section ring base, odd-shaped cross section ring base is carried out second time bulging, when bulging drift 3 contacts with lower anvil block 6, namely complete the shaping on odd-shaped cross section ring base inclined-plane, obtain secondary odd-shaped cross section ring base 12.
Step 6: odd-shaped cross section ring base is topped bar shaping.Take out cushion block 7, in operation anvil block 5 move down and with the upper-end contact of secondary odd-shaped cross section ring base 12, as it is shown on figure 3, operate forging press with F3It is that the pressure of 20～26MN makes anvil block 5 extrude the upper end of secondary odd-shaped cross section ring base 12, the upper end free compression of the secondary odd-shaped cross section ring base 12 of loose tool 4 will be exceeded to concordant with loose tool 4, complete the shaping that odd-shaped cross section ring base is topped bar, obtain final odd-shaped cross section ring base 13.
Adopting the final odd-shaped cross section ring base 13 of GH4169 alloy prepared by said method, its structure is as shown in Figure 4.
In said method, described odd-shaped cross section ring base is got out of a predicament or an embarrassing situation and the shaping on inclined-plane belongs to closed forging, and tops bar and belong to semi-enclosed forging, and therefore, this odd-shaped cross section ring base monolithic molding belongs to semi-enclosed forging.
Claims (2)
1. the preparation method of a GH4169 alloy large-size odd-shaped cross section ring base, it is characterised in that comprise the following steps:
The first step, by GH4169 alloy bar material with the temperature shove charge less than or equal to 750 DEG C, and heats to 850 DEG C of insulations, and temperature retention time is:Being again heated to 985 DEG C of insulations, temperature retention time is:Being again heated to 1100 ± 10 DEG C of insulations, temperature retention time is:
Second step, by the GH4169 alloy bar material of described heating, good heat insulation, through jumping-up, punching, the rectangular section rings base of roll off；
3rd step, loads described rectangle cross-section ring base in loose tool, and operation forging press is with F1It is that the pressure of 34～36MN is by bulging drift press-in rectangle cross-section ring base less for tapering, rectangle cross-section ring base is carried out first time bulging, rectangle cross-section ring base is expanded into bell mouth shape, simultaneously completes the shaping that odd-shaped cross section ring base is got out of a predicament or an embarrassing situation, obtain an odd-shaped cross section ring base；
4th step, takes out the bulging drift that tapering is less, changes the bulging drift that tapering is bigger into, and operation forging press is with F2Being in bulging drift the odd-shaped cross section ring base of press-in that the pressure tapering of 32～35MN is bigger, an odd-shaped cross section ring base is carried out second time bulging, the inclined-plane completing odd-shaped cross section ring base shapes, and obtains secondary odd-shaped cross section ring base；
5th step, operation forging press is with F3Be the pressure of 20～26MN exceeding the upper end free compression of secondary odd-shaped cross section ring base of loose tool to concordant with loose tool, complete the shaping that odd-shaped cross section ring base is topped bar, obtain final odd-shaped cross section ring base, described in the shaping topped bar belong to semi-enclosed forging.
2. the preparation method of GH4169 alloy large-size odd-shaped cross section ring base according to claim 1, it is characterised in that described odd-shaped cross section ring base is got out of a predicament or an embarrassing situation and the shaping on inclined-plane belongs to closed forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377203.8A CN103447768B (en) | 2013-08-27 | 2013-08-27 | The preparation method of GH4169 alloy large-size odd-shaped cross section ring base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377203.8A CN103447768B (en) | 2013-08-27 | 2013-08-27 | The preparation method of GH4169 alloy large-size odd-shaped cross section ring base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103447768A CN103447768A (en) | 2013-12-18 |
| CN103447768B true CN103447768B (en) | 2016-07-27 |
Family
ID=49730814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310377203.8A Active CN103447768B (en) | 2013-08-27 | 2013-08-27 | The preparation method of GH4169 alloy large-size odd-shaped cross section ring base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103447768B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191168A (en) * | 2014-08-04 | 2014-12-10 | 贵州航宇科技发展股份有限公司 | Large specially-shaped titanium alloy forging forming method |
| CN104191165A (en) * | 2014-08-04 | 2014-12-10 | 贵州航宇科技发展股份有限公司 | Method for forging and forming high temperature alloy large special-shaped ring |
| CN105397004A (en) * | 2015-12-02 | 2016-03-16 | 贵州安大航空锻造有限责任公司 | Forming method of large GH4169 alloy die forging |
| CN106694788A (en) * | 2016-12-01 | 2017-05-24 | 贵州安大航空锻造有限责任公司 | GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method |
| CN108160887A (en) * | 2016-12-07 | 2018-06-15 | 陕西宏远航空锻造有限责任公司 | A kind of forming method of large size GH4169 alloy annular forging |
| CN108246937B (en) * | 2017-12-27 | 2020-09-15 | 贵州航宇科技发展股份有限公司 | Manufacturing method of multi-step large-diameter casing ring forging |
| CN111922654A (en) * | 2020-07-23 | 2020-11-13 | 贵州航宇科技发展股份有限公司 | Preparation method of GH4169 alloy special-shaped ring blank with flange and forming die thereof |
| CN112475806B (en) * | 2020-11-20 | 2022-04-08 | 西安航天发动机有限公司 | QCr0.8 alloy large-size conical-cylindrical ring forming process |
| CN112719176A (en) * | 2020-12-18 | 2021-04-30 | 陕西宏远航空锻造有限责任公司 | Forging method of small-inner-diameter GH141 alloy special-shaped ring piece |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1907594A (en) * | 2005-08-02 | 2007-02-07 | 中国科学院金属研究所 | Lining half casing blank die forging forming method for recombination pressure container |
| CN101020284A (en) * | 2007-03-05 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Making process of large irregular ring blank of high temperature alloy |
-
2013
- 2013-08-27 CN CN201310377203.8A patent/CN103447768B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1907594A (en) * | 2005-08-02 | 2007-02-07 | 中国科学院金属研究所 | Lining half casing blank die forging forming method for recombination pressure container |
| CN101020284A (en) * | 2007-03-05 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Making process of large irregular ring blank of high temperature alloy |
Non-Patent Citations (1)
| Title |
|---|
| GH202合金涡轮球壳模锻件成形工艺研究;刘峰,陈爱成，史国中;《锻压技术》;20070228;143-145 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103447768A (en) | 2013-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103447768B (en) | The preparation method of GH4169 alloy large-size odd-shaped cross section ring base | |
| CN103447766B (en) | The preparation method of the large scale special-shaped section rings base of GCr15 bearing steel | |
| CN103447765A (en) | Preparing method of G20Cr2Ni4 bearing steel large-scale special-shaped cross section annular blank | |
| CN103447769A (en) | Preparing method of TC4 alloy large-scale special-shaped cross section annular blank | |
| CN100584482C (en) | Method for rolling and shaping titanium alloy special-shaped ring forging | |
| CN101279346B (en) | Method for rolling and shaping nickel-based high-temperature alloy special-shaped ring forging | |
| CN101020284A (en) | Making process of large irregular ring blank of high temperature alloy | |
| CN103350167B (en) | Roll forming method of 4340 H steel E-shaped ring forging | |
| CN105397001A (en) | Isothermal forging forming method of titanium alloy complex sheet forged piece | |
| CN103447767B (en) | The preparation method of the large scale special-shaped section rings base of G10CrNi3Mo bearing steel | |
| CN103567339A (en) | Forging method for elliptical seal head of CAP1400 steam generator | |
| CN107186139A (en) | The H profile steel manufacture method of nuclear fusion stack magnet support | |
| CN104624906B (en) | A kind of forging mold and forging method | |
| CN105397004A (en) | Forming method of large GH4169 alloy die forging | |
| CN105382157A (en) | Forming method for large special-shaped structural steel multi-step ring piece | |
| CN104338882B (en) | The forming method of generation Ⅲ nuclear power cooling medium pump motor casing forging | |
| CN105537473A (en) | Forming method of nickel-based high-temperature alloy multi-step large special-shaped ring part | |
| CN108031784B (en) | A kind of the forging loose tool and method for forging and molding of frame class installation side forging | |
| CN104550586A (en) | Rolling and forming method for iron-based high-temperature alloy thick-walled ring forging | |
| CN105397417A (en) | Rolling method of high-temperature alloy plate shaped forging | |
| CN107186140B (en) | A kind of in-flanges tubular high temperature alloy product manufacture method | |
| CN105397002A (en) | Isothermal forging forming method of high-temperature alloy complex sheet forging | |
| CN104550585A (en) | Rolling forming method of structural steel thick-wall ring forging | |
| CN104550622A (en) | Method for rolling and forming beta-phase titanium alloy thick-wall ring forging | |
| CN107398519A (en) | The rolling and fetal membrane forging of the double flange semi-rings of aluminium alloy are unified into shape method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131218 Assignee: Guiyang Daewoo Aviation Materials Engineering Co., Ltd. Assignor: Anda Aviation Forging Co., Ltd., Guizhou Contract record no.: 2018520000002 Denomination of invention: Preparing method of GH4169 alloy large-scale special-shaped cross section annular blank Granted publication date: 20160727 License type: Exclusive License Record date: 20180914 |