CN111036820A - Press-in type free forging forming method - Google Patents
Press-in type free forging forming method Download PDFInfo
- Publication number
- CN111036820A CN111036820A CN201911357437.XA CN201911357437A CN111036820A CN 111036820 A CN111036820 A CN 111036820A CN 201911357437 A CN201911357437 A CN 201911357437A CN 111036820 A CN111036820 A CN 111036820A
- Authority
- CN
- China
- Prior art keywords
- punch
- forging
- press
- forge piece
- forming method
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K29/00—Arrangements for heating or cooling during processing
Abstract
The invention discloses a forming method of press-in free forging, which aims to solve the problem of the existing high-strength alloy free forging. The method comprises the following specific steps: calculating the deformation process of the forge piece, selecting a punch and preheating the punch; forging the forged piece with the size of the allowance obtained by subtracting the press-in punch according to the pre-calculated deformation process and the size requirement of the forged piece; step three, judging and positioning the pressing position of a punch in the forge piece, and pressing the punch in; and step four, shaping the forge piece until the forge piece is finished, wherein the punch pressed in the shaping process is subjected to compressive stress and can be gradually discharged out of the forge piece. The invention is easy to master, has strong operability, does not need punching, reduces the blanking weight of the high-strength alloy forging by using the tool, greatly improves the material utilization rate and the forging yield, simultaneously can ensure the comprehensive performance of the forging and reduces the use cost of the high-strength alloy product.
Description
Technical Field
The invention relates to the field of high-strength alloy free forging, in particular to a forming method of press-in type free forging.
Background
The titanium alloy has the excellent performances of small specific gravity, high strength, high temperature resistance, corrosion resistance and the like, and is currently applied in the military field of aerospace and the like on a large scale. In the field of aviation, the dosage of the third generation (B-747, A-300) titanium alloy of Boeing company accounts for more than 9 percent; the consumption of the titanium alloy structural part threo-27 in the third generation fighter plane is 15 percent, and the consumption of the titanium alloy structural part in the fourth generation fighter plane F-22 accounts for 41 percent of the total structure of the main body. At present, TC4-DT titanium alloy structural parts are mostly obtained by forging and then machining. Titanium alloy and superalloy are difficult to realize forge piece punching, other defects such as tensile fracture and the like caused by severe deformation can occur to the surrounding tissues of the forge piece after the forge piece is punched, and the utilization rate of the forge piece is high without punching.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a press-in type free forging method to solve the above problems in the background art.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a press-in type free forging forming method comprises the following specific steps:
calculating the deformation process of the forge piece, selecting a punch and preheating the punch;
forging the forging with the size of the allowance obtained by subtracting the pressing punch according to the pre-calculated deformation process and the size requirement of the forging, so as to obtain the basic shape of the forging;
judging and positioning the pressing position of a punch in the forge piece, pressing the punch in, wherein the pressing process is required to be stable and slow, and the temperature rise of the forge piece caused by severe deformation is avoided;
and step four, shaping the forge piece until the forge piece is finished, wherein the punch pressed in the shaping process is subjected to compressive stress and can be gradually discharged out of the forge piece.
As a further scheme of the embodiment of the invention: and in the first step, different punches are selected according to the shape and the use requirement of the forging.
As a further scheme of the embodiment of the invention: in the first step, the punch is required to be tapered.
As a further scheme of the embodiment of the invention: and in the third step, the pressing position of the punch in the forge piece is manually judged.
As a further scheme of the embodiment of the invention: and in the second step, the forging is fixed on the lower anvil block.
As a further scheme of the embodiment of the invention: the temperature for preheating the punch in the first step is 380-420 ℃.
As a further scheme of the embodiment of the invention: in the first step, the preheating mode of the punch is electric furnace preheating and heat preservation.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the invention has reasonable design, easy mastering and strong operability, does not need punching, reduces the blanking weight of the high-strength alloy forging by using the tool, greatly improves the material utilization rate and the forging yield, simultaneously can ensure the comprehensive performance of the forging and reduces the use cost of the high-strength alloy product.
Drawings
Fig. 1 is a schematic flow chart of a press-in type free forging forming method.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Example 1
A press-in type free forging forming method comprises the following specific steps:
step one, calculating the deformation process of the forging, selecting a punch, wherein the punch is required to be subjected to taper drawing, and preheating the punch, wherein the preheating temperature of the punch is 380 ℃;
forging the forging with the size of the allowance obtained by subtracting the pressing punch according to the pre-calculated deformation process and the size requirement of the forging, so as to obtain the basic shape of the forging;
judging and positioning the pressing position of a punch in the forge piece, pressing the punch in, wherein the pressing process is required to be stable and slow, and the temperature rise of the forge piece caused by severe deformation is avoided;
and step four, shaping the forge piece until the forge piece is finished, wherein the punch pressed in the shaping process is subjected to compressive stress and can be gradually discharged out of the forge piece.
As a further scheme of the embodiment of the invention: and in the first step, different punches are selected according to the shape and the use requirement of the forging.
Example 2
365Kg of weight of the punch is not pressed in, 330Kg of weight of the forging pressed in the punch, and about 10% of material is saved. The production process of the press-in punch will be described below.
1. Selecting a punch: selecting a punch with the diameter of 160 multiplied by 200, wherein the punch material is H13 (the material is 4Cr5MoSiV1 which is common hot die steel), the preheating temperature of the punch is 400 ℃ (the preheating mode of the punch is a preheating mode of an electric furnace preheating furnace, and the temperature is kept for 60 minutes.)
2. Designing the shape of the forging pressing punch: according to the punch pressing amount, the allowance of 5mm is reduced in the length direction and the width direction of the forge piece respectively, the allowance of 5mm is the amount of outward expansion of metal after the punch is pressed in, and the thickness dimension of the forge piece is consistent with that of a finished forge piece.
3. Pressing in a punch: placing the punch at a selected position by a manual bench worker, wherein the requirement on the placing time cannot be overlong, then applying pressure to the punch by equipment to press the punch into the forge piece, wherein the pressing amount of the punch is 2/3 of the thickness of the forge piece, and the pressing speed is selected to be 3 mm/s.
4. Micro-shaping of the forged piece: after the punch is pressed in, the metal of the pressing part of the forging piece flows outwards and produces bulging degree at the edge, the forging piece is erected, the bulging degree position is slightly pressed, and the punch is outwards discharged along the taper direction of the drawing die due to the fact that the punch is subjected to the force in the pressing direction. The forging process only comprises the steps of micro-shaping a forge piece and taking out a punch, and the forging pressing amount is selected to be less than or equal to 5 mm.
5. Cooling the punch for later use: because the punch is pressed into the high-temperature forging, continuous production cannot be realized, the strength of the punch is reduced due to the temperature rise in the continuous production, and the punch deforms when pressed again. In this case 5 punches were kept in reserve.
The detection requirement of the forge piece is that one piece is extracted from each batch to detect the mechanical property, the forge piece product of the batch is qualified and delivered to manufacturers for use, and compared with the prior method, the method saves 10 percent of raw materials and can directly reduce the blanking weight of the forge piece. The punch can be repeatedly used for many times, and the use cost is low. The die forging can also greatly improve the yield of the forged piece product, but a large amount of die cost needs to be invested. And the tonnage of the required forging equipment is larger, about 2 ten thousand tons of friction press is required for producing the die forging piece of the embodiment 2, and the use limit is larger.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A press-in type free forging forming method is characterized by comprising the following specific steps:
calculating the deformation process of the forge piece, selecting a punch and preheating the punch;
forging the forging with the size of the allowance obtained by subtracting the pressing punch according to the pre-calculated deformation process and the size requirement of the forging, so as to obtain the basic shape of the forging;
judging and positioning the pressing position of the punch in the forge piece, and stably and slowly pressing the punch in;
and step four, shaping the forge piece until the forging is finished.
2. The press-in free forging forming method as claimed in claim 1, wherein in the first step, different punches are selected according to the shape and use requirements of the forging.
3. The press-in free forging forming method as set forth in claim 1, wherein the punch is further tapered in the first step.
4. The press-in type free forging forming method according to claim 1, wherein the pressing-down position of the punch in the forging is manually judged in the third step.
5. The method of claim 1, wherein in step two the forging is secured to a lower anvil.
6. The press-in type free forging forming method as claimed in claim 1, wherein the temperature for preheating the punch in the first step is 380-420 ℃.
7. The press-in type free forging forming method according to claim 1 or 6, wherein the preheating mode of the punch in the first step is electric furnace preheating and heat preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911357437.XA CN111036820A (en) | 2019-12-25 | 2019-12-25 | Press-in type free forging forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911357437.XA CN111036820A (en) | 2019-12-25 | 2019-12-25 | Press-in type free forging forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111036820A true CN111036820A (en) | 2020-04-21 |
Family
ID=70239623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911357437.XA Pending CN111036820A (en) | 2019-12-25 | 2019-12-25 | Press-in type free forging forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111036820A (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU816646A1 (en) * | 1978-10-30 | 1981-03-30 | Предприятие П/Я А-3686 | Method of producing articles with throgh hole |
| JPS62168626A (en) * | 1986-01-20 | 1987-07-24 | Yamaha Motor Co Ltd | Gear shaft of speed changer |
| SU1337180A1 (en) * | 1984-10-30 | 1987-09-15 | Завод-ВТУЗ при Карагандинском металлургическом комбинате | Method of open broaching of billet |
| RU2063838C1 (en) * | 1994-10-24 | 1996-07-20 | Басюк Семар Тимофеевич | Method or wheel type pieces production |
| CN101184562A (en) * | 2005-05-26 | 2008-05-21 | 昭和电工株式会社 | Method and apparatus for hole punching |
| CN102319757A (en) * | 2011-08-18 | 2012-01-18 | 中国兵器工业第五二研究所 | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation |
| CN104308056A (en) * | 2014-08-20 | 2015-01-28 | 二重集团（德阳）重型装备股份有限公司 | Hot forging forming method for cylindrical forged piece |
| CN105057539A (en) * | 2015-09-14 | 2015-11-18 | 通裕重工股份有限公司 | Forging mold and method for blind hole forge piece |
| CN105397001A (en) * | 2015-12-02 | 2016-03-16 | 贵州安大航空锻造有限责任公司 | Isothermal forging forming method of titanium alloy complex sheet forged piece |
| CN105522087A (en) * | 2016-01-19 | 2016-04-27 | 溧阳市金昆锻压有限公司 | Die forging process of granulator press roll |
| CN105598335A (en) * | 2014-11-03 | 2016-05-25 | 徐杰 | Forging technology of deep blind hole processing with impact method |
| CN105618652A (en) * | 2014-11-03 | 2016-06-01 | 徐杰 | Forging punch for machining deep blind hole through static pressure impact method |
| CN105618649A (en) * | 2014-11-03 | 2016-06-01 | 徐杰 | Forging technique for machining deepened blind hole through impact method |
| CN105880447A (en) * | 2016-06-17 | 2016-08-24 | 二十二冶集团精密锻造有限公司 | Closed forging process for drilling tool wire-lifting forge pieces |
| CN105921672A (en) * | 2016-05-17 | 2016-09-07 | 山东大学 | Isothermal forging method of straight bevel gear |
| CN106670374A (en) * | 2016-12-01 | 2017-05-17 | 贵州安大航空锻造有限责任公司 | Near-isothermal forging forming method for Ti6242 titanium alloy hollow shaft journal forged piece |
| CN106825344A (en) * | 2017-02-16 | 2017-06-13 | 哈尔滨汽轮机厂有限责任公司 | A kind of free forging method that male sportsman sealing ring is realized using 1 ton of flat-die hammer |
| CN106862452A (en) * | 2015-12-14 | 2017-06-20 | 陕西宏远航空锻造有限责任公司 | A kind of isothermal β forging methods of TC17 titanium alloys blisk |
| CN106862473A (en) * | 2015-12-14 | 2017-06-20 | 陕西宏远航空锻造有限责任公司 | A kind of processing method of titanium alloy basin shape Forging |
| CN108405788A (en) * | 2018-04-23 | 2018-08-17 | 陕西宏远航空锻造有限责任公司 | A kind of forging method of TiB/7050 aluminum matrix composites forging |
| CN109226622A (en) * | 2018-09-18 | 2019-01-18 | 西安三角防务股份有限公司 | A kind of TA15 titanium alloy forging forging forming method with high-intensity and high-tenacity |
-
2019
- 2019-12-25 CN CN201911357437.XA patent/CN111036820A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU816646A1 (en) * | 1978-10-30 | 1981-03-30 | Предприятие П/Я А-3686 | Method of producing articles with throgh hole |
| SU1337180A1 (en) * | 1984-10-30 | 1987-09-15 | Завод-ВТУЗ при Карагандинском металлургическом комбинате | Method of open broaching of billet |
| JPS62168626A (en) * | 1986-01-20 | 1987-07-24 | Yamaha Motor Co Ltd | Gear shaft of speed changer |
| RU2063838C1 (en) * | 1994-10-24 | 1996-07-20 | Басюк Семар Тимофеевич | Method or wheel type pieces production |
| CN101184562A (en) * | 2005-05-26 | 2008-05-21 | 昭和电工株式会社 | Method and apparatus for hole punching |
| CN102319757A (en) * | 2011-08-18 | 2012-01-18 | 中国兵器工业第五二研究所 | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation |
| CN104308056A (en) * | 2014-08-20 | 2015-01-28 | 二重集团（德阳）重型装备股份有限公司 | Hot forging forming method for cylindrical forged piece |
| CN105598335A (en) * | 2014-11-03 | 2016-05-25 | 徐杰 | Forging technology of deep blind hole processing with impact method |
| CN105618649A (en) * | 2014-11-03 | 2016-06-01 | 徐杰 | Forging technique for machining deepened blind hole through impact method |
| CN105618652A (en) * | 2014-11-03 | 2016-06-01 | 徐杰 | Forging punch for machining deep blind hole through static pressure impact method |
| CN105057539A (en) * | 2015-09-14 | 2015-11-18 | 通裕重工股份有限公司 | Forging mold and method for blind hole forge piece |
| CN105397001A (en) * | 2015-12-02 | 2016-03-16 | 贵州安大航空锻造有限责任公司 | Isothermal forging forming method of titanium alloy complex sheet forged piece |
| CN106862452A (en) * | 2015-12-14 | 2017-06-20 | 陕西宏远航空锻造有限责任公司 | A kind of isothermal β forging methods of TC17 titanium alloys blisk |
| CN106862473A (en) * | 2015-12-14 | 2017-06-20 | 陕西宏远航空锻造有限责任公司 | A kind of processing method of titanium alloy basin shape Forging |
| CN105522087A (en) * | 2016-01-19 | 2016-04-27 | 溧阳市金昆锻压有限公司 | Die forging process of granulator press roll |
| CN105921672A (en) * | 2016-05-17 | 2016-09-07 | 山东大学 | Isothermal forging method of straight bevel gear |
| CN105880447A (en) * | 2016-06-17 | 2016-08-24 | 二十二冶集团精密锻造有限公司 | Closed forging process for drilling tool wire-lifting forge pieces |
| CN106670374A (en) * | 2016-12-01 | 2017-05-17 | 贵州安大航空锻造有限责任公司 | Near-isothermal forging forming method for Ti6242 titanium alloy hollow shaft journal forged piece |
| CN106825344A (en) * | 2017-02-16 | 2017-06-13 | 哈尔滨汽轮机厂有限责任公司 | A kind of free forging method that male sportsman sealing ring is realized using 1 ton of flat-die hammer |
| CN108405788A (en) * | 2018-04-23 | 2018-08-17 | 陕西宏远航空锻造有限责任公司 | A kind of forging method of TiB/7050 aluminum matrix composites forging |
| CN109226622A (en) * | 2018-09-18 | 2019-01-18 | 西安三角防务股份有限公司 | A kind of TA15 titanium alloy forging forging forming method with high-intensity and high-tenacity |
Non-Patent Citations (4)
| Title |
|---|
| 张如华等: "孔径比为2.50～3.00的自由锻冲孔坯料形状研究", 《锻压技术》 * |
| 机械工人应知考核题解丛书编审委员会: "《锻压工应知考核题解》", 31 March 1994, 机械工业出版社 * |
| 汪大年: "《高等学校试用教材 金属塑性成形原理》", 30 June 1982, 机械工业出版社 * |
| 莫畏: "《钛》", 30 June 2008, 冶金工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101693279B (en) | Upsetting and extruding precision die-forging forming method for large titanium alloy deep tube parts | |
| CN103691874B (en) | A kind of thin-wall nut manufacturing process | |
| CN102319992B (en) | Method for manufacturing aluminum alloy die forging | |
| CN108746447A (en) | A kind of anticorodal forge piece manufacturing process | |
| CN101279348A (en) | Method for rolling and shaping aluminum alloy conical ring | |
| CN108044007B (en) | Forging method of high-uniformity Ti632211 titanium alloy plate | |
| CN101811244A (en) | Annular bearing forging triple-package forging technology | |
| CN104139145A (en) | Method for forging guide horn mouth forge pieces applied to internal components of nuclear reactor | |
| CN105397001A (en) | Isothermal forging forming method of titanium alloy complex sheet forged piece | |
| CN102172815A (en) | Hot extrusion forming method for inner hexagonal bolt blank of titanium alloy | |
| CN107186139A (en) | The H profile steel manufacture method of nuclear fusion stack magnet support | |
| CN105728612A (en) | Forging method of large titanium alloy frame class precision forge piece for aviation aircraft | |
| CN103586633A (en) | Method for machining stainless steel singe dual-lug support plate nut | |
| CN105414233A (en) | Backward extrusion die with back pressure and processing technology adopting same | |
| CN101545440B (en) | Method for manufacturing swivel of actuating lever for motorcycle | |
| CN106694789B (en) | die forging process and device for blank of outer star wheel and inner star wheel for automobile transmission shaft | |
| CN103567341A (en) | Forging method for CAP1400 nuclear power pressure vessel pipe connecting section | |
| CN109482791A (en) | A kind of C-shaped cross section ring centre embryo material preparation process | |
| CN109570432B (en) | Aluminum alloy forged ring manufacturing method based on shearing die for punching | |
| CN111036820A (en) | Press-in type free forging forming method | |
| CN111659846A (en) | Forging method for homogenizing GH141 special-shaped ring forging grains | |
| CN109440033B (en) | Process method for eliminating residual stress of arc-shaped forge piece | |
| CN115740313A (en) | Machining process of conical forge piece | |
| CN104646578A (en) | Isothermal forging method for titanium alloy whole frame-shaped piece | |
| CN106363363A (en) | Semi-solid thixo-forging forming technology for steel impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200421 |