CN107866512A - Difficult-to-deformation material blank-making method based on cross wedge rolling - Google Patents
Difficult-to-deformation material blank-making method based on cross wedge rolling Download PDFInfo
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- CN107866512A CN107866512A CN201710291423.7A CN201710291423A CN107866512A CN 107866512 A CN107866512 A CN 107866512A CN 201710291423 A CN201710291423 A CN 201710291423A CN 107866512 A CN107866512 A CN 107866512A
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- cross wedge
- wedge rolling
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- deformation material
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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
- B21J5/002—Hybrid process, e.g. forging following casting
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- 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
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Abstract
The invention belongs to difficult-to-deformation material base processing method field, is more particularly to a kind of difficult-to-deformation material blank-making method based on cross wedge rolling.This method comprises the following steps：1. raw material are processed into by pole shape by loose tooling forging；2. solution treatment is carried out to bar using Technology for Heating Processing；3. Ageing Treatment is carried out to bar using Technology for Heating Processing；4. the bar after heat treatment is processed into size needed for cross wedge rolling；5. sub-material base is carried out using cross wedge rolling technique.The present invention manufactures for the part of difficult-to-deformation material (high temperature alloy, titanium alloy), substitute traditional integral forming method by local plastic manufacturing process, using cross wedge rolling base substitution extruding, die forging base, the good blank of combination property is obtained by optimizing Technology for Heating Processing and Regularity of Workpiece of Cross Wedge Rolling technique.The high-efficiency high-accuracy shaping of the achievable difficult-to-deformation material of the present invention, and reach saving metal material and energy, obtain considerable economic benefit and significant social benefit.
Description
Technical field
The invention belongs to difficult-to-deformation material base processing method field, is more particularly to a kind of difficult deformation based on cross wedge rolling
Material blank-making method.
Background technology
With extensive use of the difficult-to-deformation material part in fields such as Aeronautics and Astronautics, the energy, forming accuracy to component,
Microstructure, mechanical property and use reliability propose higher requirement.And existing difficult deformation blank-making method needs multiplexing
Skill multi-pass and very high is required to equipment tonnage, seek a kind of high-efficiency high-accuracy difficult-to-deformation material base processing method and substitute to pass
Controlling base technology is to promoting the high-end manufacturing industry of aviation to have important social effect.
Being directed to the traditional processing technology of difficult-to-deformation material blank-making method is：Add firstly the need of heat treatment is carried out to bar
Heat, then squeezes out External Shape again, then with die forging base, because material is difficult-to-deformation material, such extrusion molding and die forging
The tonnage of equipment is very big during shaping, while to reserve overlap using extruding and die-forging forming and expect to waste raw material, and some zero
The very thin poor rigidity of part of part, is easily deformed by the effect of the factors such as residual stress in process.So tradition
The shortcomings that forming accuracy of mechanical processing technique is low, and stock utilization is low, efficiency is low, yield rate is low is notable, so seriously constrains difficulty
The manufacture of moulding material.
The content of the invention
It is an object of the invention to provide a kind of difficult-to-deformation material blank-making method based on cross wedge rolling, in order to improve material
Utilization rate and production efficiency, ensure forming accuracy, surface quality and the mechanical property of cross wedge rolling base.
Technical scheme is as follows：
A kind of difficult-to-deformation material blank-making method based on cross wedge rolling, comprises the following steps：
1. raw material are processed into by pole shape by loose tooling forging；
2. solution treatment is carried out to bar using Technology for Heating Processing；
3. Ageing Treatment is carried out to bar using Technology for Heating Processing；
4. the bar after heat treatment is processed into size needed for cross wedge rolling；
5. sub-material base is carried out using cross wedge rolling technique.
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 1. in, loose tooling forging raw material is difficult-to-deformation material：
High temperature alloy bar or titanium alloy bar.
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 1. in, loose tooling forging temperature be 890 DEG C~1050
℃。
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 2. in, solid solution temperature be 980 DEG C~
1100 DEG C, 20~40min of solution treatment time.
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 3. in, aging temperature 900 DEG C~925
DEG C, aging time 24h~32h.
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 4. in, the mill speed of cross wedge rolling is
300mm/s~500mm/s.
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 4. in, the rolling temperature of bar cross wedge rolling is
900 DEG C~1000 DEG C.
The described difficult-to-deformation material blank-making method based on cross wedge rolling, step 4. in, the forming angle of cross wedge rolling for 25 °~
32 °, the broadening angle of cross wedge rolling is 6 °~9 °, and the contraction percentage of area of cross wedge rolling is 50%~65%.
The present invention design philosophy be：
The present invention be difficult-to-deformation material part high-efficiency high-precision processing technology, by metal fever hot-die be swaged into bar,
Cross wedge rolling is carried out under rational heat treatment condition into blank.Raw material is swaged into bar with loose tooling forging technology first, then
Bar is carried out to be heat-treated last progress Regularity of Workpiece of Cross Wedge Rolling base at a suitable temperature.It can be improved using the technique of cross wedge rolling
The utilization rate of material, simultaneously because cross wedge rolling be partial plastic forming so as to reduce the tonnage of equipment, the surface quality of product is higher,
Mechanical property is more preferable, is also improved than traditional technique compared to the raising of material efficiency, product quality is not only saved.
Advantages of the present invention and beneficial effect are：
1st, the present invention takes forging technology that alloy raw material is swaged into round bar, can ensure that alloy is becoming using forging technology
There is the advantages that dense structure, no shrinkage defect after shape.
2nd, the present invention coordinates Technology for Heating Processing after the forging process, and tissue and grain size can be reached by Technology for Heating Processing
Regulation, improve the combination property of alloy.
3rd, partial plastic forming mode of the present invention replaces traditional monolithic molding mode, can reduce former tonnage.
4th, the more traditional holistic approach of the present invention can improve the utilization rate of material, reach the purpose of section material.
5th, the present invention be able to can require to realize the requirement of part different parts different distortion amount according to part integrity, so as to reach
To the purpose of grain size control.
Brief description of the drawings
Fig. 1 is cross wedge rolling principle schematic of the present invention.In figure, 1 mold；2 times moulds；3 rolled pieces.
Fig. 2 is the high temperature alloy blank schematic diagram that the present invention is completed using cross wedge rolling rolling.In figure, 4 test specimens one；5
Test specimen two；6 test specimens three；7 test specimens four.
Embodiment
In specific implementation process, as Figure 1-Figure 2, the difficult-to-deformation material base processing side of the invention based on cross wedge rolling
Method, comprise the following steps：
(1) it is bar by loose tooling forging by raw material, difficult-to-deformation material bar used by the production method, loose tooling forging temperature
It is more preferable to spend the bar organization mechanicses performance for 980 DEG C~1050 DEG C, so obtained, and it is internal without rarefaction defect, it is horizontal beneficial to wedge
Roll into shape.
(2) be heat-treated, carry out solution treatment and Ageing Treatment to the bar of step 1 loose tooling forging shaping, solution treatment and when
Effect processing.
(3) bar after heat treatment is processed into size needed for cross wedge rolling, difficulty is processed using Regularity of Workpiece of Cross Wedge Rolling technique
Deformable material blank, the production method are the subsequent technique of steps 1 and 2, and mill speed is 300mm/s~500mm/s, rolling temperature
900 DEG C~1100 DEG C of degree, 25 °~32 ° of forming angle, 6 °~9 ° of broadening angle, the contraction percentage of area 50%~65%, obtain processing part
Required blank.
As shown in figure 1, cross wedge rolling includes mold 1, lower mould 2, it is rolled piece 3 between mold 1 and lower mould 2.Such as Fig. 2
It is shown, in order to improve rolling efficiency, four blanks of cross wedge rolling one-shot forming (test specimen 1, test specimen 25, test specimen 36, examination of the present invention
Part 4 is 7).Cross wedge rolling is more efficient, and the part mechanical property after processing is more preferable, and surface quality improves.
(4) cross wedge rolling sub-material base.
Below, the present invention is further elaborated on by embodiment.
Embodiment 1
In the present embodiment, the difficult-to-deformation material blank-making method step based on cross wedge rolling is as follows：
(1) GH4169 high temperature alloys are used；
(2) GH4169 alloy is heated, added into bar by GH4169 high temperature alloys Raw material processing in resistance furnace
Hot to 980 DEG C progress loose tooling forgings；
(3) bar size needed for being machined into；
(4) it is heat-treated：
1) bar processed is subjected to solution treatment in resistance furnace, 1040 DEG C of solid solution temperature, during solution treatment
Between 40min；
2) bar of solution treatment is subjected to Ageing Treatment, aging temp is 920 DEG C, aging time 24h；
3) finally use and be machined into size as Φ 38mm × 115mm.
(5) cross wedge rolling forming：
1) bar heating-up temperature is 980 DEG C, ensures that bar is minimum with contacting dies temperature loss in cross wedge rolling, in bar
Coat glass lubricant in surface；
2) symmetry rolling mode is taken, once rolling 4,30 ° of die forming angle, 8 ° of broadening angle, the contraction percentage of area 60%,
Mill speed 408mm/s；
3) water cooling is carried out after cross wedge rolling forming at once.
Embodiment 2
In the present embodiment, the difficult-to-deformation material blank-making method step based on cross wedge rolling is as follows：
(1) raw material is swaged into by round bar using loose tooling forging, with the step 1 in embodiment 1, raw material is TC11 titaniums for technological process
Alloy, 920 DEG C of loose tooling forging temperature.
(2) it is heat-treated：
1) bar processed is subjected to solution treatment in resistance furnace, 1060 DEG C of solid solution temperature, during solution treatment
Between 30min；
2) bar of solution treatment is subjected to Ageing Treatment, aging temp is 910 DEG C, aging time 32h；
3) finally use and be machined into size as Φ 40mm × 100mm；
(3) cross wedge rolling forming：
1) bar rolling temperature is 950 DEG C, ensures that bar is minimum with contacting dies temperature loss in cross wedge rolling, in bar
Coat glass lubricant in surface；
2) symmetry rolling mode is taken, once rolls 4, die forming angle is 28 °, 7.5 ° of broadening angle, the contraction percentage of area
65%, mill speed 300mm/s；
3) water cooling is carried out after cross wedge rolling forming at once.
Embodiment result shows that the present invention manufactures for the part of difficult-to-deformation material (high temperature alloy, titanium alloy), passes through office
Portion's plastic molding method substitutes traditional integral forming method, using cross wedge rolling base substitution extruding, die forging base, passes through optimization
Technology for Heating Processing and Regularity of Workpiece of Cross Wedge Rolling technique obtain the good blank of combination property.The efficient of difficult-to-deformation material can be achieved in the present invention
High accuracy shaping, and reach saving metal material and energy, obtain considerable economic benefit and significant social benefit.
Claims (8)
1. a kind of difficult-to-deformation material blank-making method based on cross wedge rolling, it is characterised in that comprise the following steps：
1. raw material are processed into by pole shape by loose tooling forging；
2. solution treatment is carried out to bar using Technology for Heating Processing；
3. Ageing Treatment is carried out to bar using Technology for Heating Processing；
4. the bar after heat treatment is processed into size needed for cross wedge rolling；
5. sub-material base is carried out using cross wedge rolling technique.
2. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 1.
In, loose tooling forging raw material is difficult-to-deformation material：High temperature alloy bar or titanium alloy bar.
3. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 1.
In, loose tooling forging temperature is 890 DEG C~1050 DEG C.
4. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 2.
In, solid solution temperature is 980 DEG C~1100 DEG C, 20~40min of solution treatment time.
5. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 3.
In, 900 DEG C~925 DEG C of aging temperature, aging time 24h~32h.
6. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 4.
In, the mill speed of cross wedge rolling is 300mm/s~500mm/s.
7. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 4.
In, the rolling temperature of bar cross wedge rolling is 900 DEG C~1000 DEG C.
8. the difficult-to-deformation material blank-making method based on cross wedge rolling according to claims 1, it is characterised in that step is 4.
In, the forming angle of cross wedge rolling is 25 °~32 °, and the broadening angle of cross wedge rolling is 6 °~9 °, the contraction percentage of area of cross wedge rolling for 50%~
65%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291423.7A CN107866512A (en) | 2017-04-28 | 2017-04-28 | Difficult-to-deformation material blank-making method based on cross wedge rolling |
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| CN201710291423.7A CN107866512A (en) | 2017-04-28 | 2017-04-28 | Difficult-to-deformation material blank-making method based on cross wedge rolling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351064A (en) * | 2021-12-15 | 2022-04-15 | 中国科学院金属研究所 | Preparation method of GH4169 alloy tube bar with surface ultrafine grain structure |
Citations (4)
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|---|---|---|---|---|
| CN1163169A (en) * | 1997-01-09 | 1997-10-29 | 机械工业部北京机电研究所 | Wedge transverse rolling and vertical forging technology for forming rough forging of diesel engine oil sprayer |
| CN101007378A (en) * | 2007-02-01 | 2007-08-01 | 上海保捷汽车零部件锻压有限公司 | Shifting fork forging method of auto parts |
| US20130136943A1 (en) * | 2011-11-13 | 2013-05-30 | Gesenkschmiede Schneider Gmbh | Process for producing a rotationally symmetric hollow part and hollow part produced thereby |
| CN103600014A (en) * | 2011-12-31 | 2014-02-26 | 无锡透平叶片有限公司 | Loose tooling drawing-out device for locally drawing out axially symmetric structure bar |
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2017
- 2017-04-28 CN CN201710291423.7A patent/CN107866512A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1163169A (en) * | 1997-01-09 | 1997-10-29 | 机械工业部北京机电研究所 | Wedge transverse rolling and vertical forging technology for forming rough forging of diesel engine oil sprayer |
| CN101007378A (en) * | 2007-02-01 | 2007-08-01 | 上海保捷汽车零部件锻压有限公司 | Shifting fork forging method of auto parts |
| US20130136943A1 (en) * | 2011-11-13 | 2013-05-30 | Gesenkschmiede Schneider Gmbh | Process for producing a rotationally symmetric hollow part and hollow part produced thereby |
| CN103600014A (en) * | 2011-12-31 | 2014-02-26 | 无锡透平叶片有限公司 | Loose tooling drawing-out device for locally drawing out axially symmetric structure bar |
Non-Patent Citations (2)
| Title |
|---|
| 张宁: "楔横轧成形GH4169合金的热力耦合数值模拟", 《北京科技大学学报》 * |
| 黄江华: "展宽角对楔横轧4Cr9Si2气门成形质量的影响", 《北京科技大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351064A (en) * | 2021-12-15 | 2022-04-15 | 中国科学院金属研究所 | Preparation method of GH4169 alloy tube bar with surface ultrafine grain structure |
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