CN105397003A - Forming method of large TC4 alloy die forging - Google Patents
Forming method of large TC4 alloy die forging Download PDFInfo
- Publication number
- CN105397003A CN105397003A CN201510868995.8A CN201510868995A CN105397003A CN 105397003 A CN105397003 A CN 105397003A CN 201510868995 A CN201510868995 A CN 201510868995A CN 105397003 A CN105397003 A CN 105397003A
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- Prior art keywords
- ring base
- forging
- alloy
- special
- straight
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forming method of a large TC4 alloy die forging. The method comprises the following steps: heating a TC4 alloy bar material; upsetting and punching; then rolling to obtain a rectangular ring billet; transferring the rectangular ring billet into a forming die to forge into an irregular ring billet; placing the irregular ring billet into a forming die cavity which iscoated with a lubricant; driving an upper die to downwards press at the speed of being not less than 2mm/s, so as to form the forging. With the adoption of the method, the large TC4 alloy die forging can be effectively formed; a shoulder part of a small head of the forging can be completely filled, and thus the forming quality of the large TC4 alloy die forging can be improved. The method is applied to the formation of the large TC4 alloy die forging.
Description
Technical field
The present invention relates to a kind of forging forming method, particularly relate to a kind of TC4 alloy large-size forging part manufacturing process.
Background technology
Fan leaf dish is one of parts common on aircraft, and this volume of part is comparatively large, complex structure, and TC4 alloy material resistance of deformation used is large, is not easily shaped; During forging and molding, from material flowing angle, forging microcephaly shoulder vertical direction is thinner, and temperature declines very fast, and relative difficulty filled by material.At present, can only be shaped by machining, waste a large amount of raw material, and the forging flow lines destroyed, reduce the mechanical property of forging.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of waste type, realizes TC4 alloy large-size forging part manufacturing process, to improve TC4 alloy large-size forging part, ensures product quality.
For solving the problems of the technologies described above, TC4 alloy large-size forging part manufacturing process of the present invention, its technical scheme comprises the following steps:
Get the TC4 alloy bar material of certain specification, load in electric furnace and be heated to below transformation temperature 30 DEG C, insulation;
Bar is taken out, after jumping-up, punching, is rolled into straight-flanked ring base;
Straight-flanked ring base is melted down and is heated to below transformation temperature 30 DEG C; Fetal membrane is preheated to 250 DEG C; Straight-flanked ring base is loaded in loose tool, is forged into special-shaped ring base;
Special-shaped ring base is melted down and is heated to below transformation temperature 30 DEG C; After shaping dies being preheated to 250 DEG C, coat lubricant, make its coefficient of friction reach 0.7; Special-shaped ring base being put into the counterdie die cavity of shaping dies, take F as the driving force of 20KN ~ 2000KN, drives patrix to press down with the speed of≤2mm/s, makes forging forming.
Compared with prior art, beneficial effect of the present invention is as follows:
TC4 alloy large-size forging part manufacturing process of the present invention, can realize the shaping of TC4 alloy large-size forging part effectively, ensure that forging microcephaly shoulder can be filled completely, improves the forming quality of TC4 alloy large-size forging part.
Coefficient of friction is 0.7 and presses down the isoparametric control of speed≤2mm/s, can ensure TC4 alloy material mobility, fully can complete the filling of forging microcephaly shoulder.
TC4 alloy large-size forging part appearance and size is complete after testing.
The room temperature tensile properties of TC4 alloy large-size forging part after testing, its tensile strength is 980MPa ~ 1000MPa (being greater than the 895MPa of design instructions for use), yield strength when percentage elongation is 0.2% is 945MPa ~ 960MPa (being greater than the 825MPa of design instructions for use), elongation after fracture was 11.5% ~ 13.5% (being greater than 10% of design instructions for use), and the contraction percentage of area was 43.5% ~ 47.5% (being greater than 20% of design instructions for use).
Above-mentioned testing result shows, the TC4 alloy large-size forging part property indices adopting this manufacturing process to be shaped all meets the requirements.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the structural representation of special-shaped ring base.
Fig. 2 is before finish-forging is shaped, the view of special-shaped ring base and mould.
Fig. 3 is after finish-forging is shaped, the view of special-shaped ring base and mould.
Detailed description of the invention
The shaping implementing TC4 alloy large-size forging part of the present invention needs to provide the equipment such as forge furnace, forcing press, looping mill, manipulator.Below to describe the detailed description of the invention of the method in detail:
This alloy main chemical elements content (percentage by weight) is: containing Al amount 5.5% ~ 6.8%, V content 3.5% ~ 4.5%, containing Fe amount≤0.30%, C content≤0.10%, leaded wastewater≤0.05%, containing H amount≤0.015%, containing O amount≤0.20%, other elements are single≤0.10% and summation≤0.40%, surplus are Ti.
The step of this method is as follows:
Step 1: prepare straight-flanked ring base
Get the TC4 alloy bar material of certain specification, load in electric furnace and be heated to below transformation temperature 30 DEG C, insulation;
Bar is taken out, after jumping-up, punching, is rolled into straight-flanked ring base.
Step 2: prepare special-shaped ring base
Straight-flanked ring base is melted down and is heated to below transformation temperature 30 DEG C; Fetal membrane is preheated to 250 DEG C; Straight-flanked ring base is loaded in loose tool, is forged into special-shaped ring base 1, as shown in Figure 1.
Step 3: forging and molding
Special-shaped ring base 1 is melted down and is heated to below transformation temperature 30 DEG C; After shaping dies being preheated to 250 DEG C, coat lubricant, make its coefficient of friction reach 0.7; As shown in Figure 2, special-shaped ring base 1 being put into counterdie 3 die cavity of shaping dies, take F as the driving force of 20KN ~ 2000KN, drives patrix 4 to press down with the speed of≤2mm/s, makes forging forming, obtain TC4 alloy large-size forging part 2.
Claims (1)
1. a TC4 alloy large-size forging part manufacturing process, is characterized in that, comprise the following steps:
Get the TC4 alloy bar material of certain specification, load in electric furnace and be heated to below transformation temperature 30 DEG C, insulation;
Bar is taken out, after jumping-up, punching, is rolled into straight-flanked ring base;
Straight-flanked ring base is melted down and is heated to below transformation temperature 30 DEG C; Fetal membrane is preheated to 250 DEG C; Straight-flanked ring base is loaded in loose tool, is forged into special-shaped ring base;
Special-shaped ring base is melted down and is heated to below transformation temperature 30 DEG C; After shaping dies being preheated to 250 DEG C, coat lubricant, make its coefficient of friction reach 0.7; Special-shaped ring base being put into the counterdie die cavity of shaping dies, take F as the driving force of 20KN ~ 2000KN, drives patrix to press down with the speed of≤2mm/s, makes forging forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868995.8A CN105397003A (en) | 2015-12-02 | 2015-12-02 | Forming method of large TC4 alloy die forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868995.8A CN105397003A (en) | 2015-12-02 | 2015-12-02 | Forming method of large TC4 alloy die forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105397003A true CN105397003A (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510868995.8A Pending CN105397003A (en) | 2015-12-02 | 2015-12-02 | Forming method of large TC4 alloy die forging |
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| CN (1) | CN105397003A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636042A (en) * | 2020-06-12 | 2020-09-08 | 无锡派克新材料科技股份有限公司 | Method for improving malleability of intermetallic compound alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090111937A (en) * | 2008-04-23 | 2009-10-28 | 충북대학교 산학협력단 | Cold forging method with different friction condition on each surface of die |
| CN101758159A (en) * | 2009-11-27 | 2010-06-30 | 贵州安大航空锻造有限责任公司 | Near isothermal forging method for whole titanium alloy disc shaft forgeable piece |
| CN103447769A (en) * | 2013-08-27 | 2013-12-18 | 贵州安大航空锻造有限责任公司 | Preparing method of TC4 alloy large-scale special-shaped cross section annular blank |
| CN103658477A (en) * | 2012-09-12 | 2014-03-26 | 中航卓越锻造（无锡）有限公司 | Forging process of titanium alloy blades |
-
2015
- 2015-12-02 CN CN201510868995.8A patent/CN105397003A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090111937A (en) * | 2008-04-23 | 2009-10-28 | 충북대학교 산학협력단 | Cold forging method with different friction condition on each surface of die |
| CN101758159A (en) * | 2009-11-27 | 2010-06-30 | 贵州安大航空锻造有限责任公司 | Near isothermal forging method for whole titanium alloy disc shaft forgeable piece |
| CN103658477A (en) * | 2012-09-12 | 2014-03-26 | 中航卓越锻造（无锡）有限公司 | Forging process of titanium alloy blades |
| CN103447769A (en) * | 2013-08-27 | 2013-12-18 | 贵州安大航空锻造有限责任公司 | Preparing method of TC4 alloy large-scale special-shaped cross section annular blank |
Non-Patent Citations (2)
| Title |
|---|
| 中国机械工程学会塑形工程分会: "《锻压手册-锻造》", 30 November 2013, 机械工业出版社 * |
| 张海燕等: "TC11钛合金压气机盘的模锻工艺优化", 《兵器材料科学与工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636042A (en) * | 2020-06-12 | 2020-09-08 | 无锡派克新材料科技股份有限公司 | Method for improving malleability of intermetallic compound alloy |
| CN111636042B (en) * | 2020-06-12 | 2021-05-18 | 无锡派克新材料科技股份有限公司 | Method for improving malleability of intermetallic compound alloy |
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Application publication date: 20160316 |