CN109127974A - A kind of forging method of helmet magnesium lithium-base alloy guide rail - Google Patents
A kind of forging method of helmet magnesium lithium-base alloy guide rail Download PDFInfo
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- CN109127974A CN109127974A CN201811196454.5A CN201811196454A CN109127974A CN 109127974 A CN109127974 A CN 109127974A CN 201811196454 A CN201811196454 A CN 201811196454A CN 109127974 A CN109127974 A CN 109127974A
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- Prior art keywords
- forging
- blank
- magnesium lithium
- base alloy
- mold
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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
- B21J5/022—Open die forging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of helmet forging methods of magnesium lithium-base alloy rail guide piece.It consists essentially of following steps: (1) preparation of plate blank, mold design (2) blank ageing treatment (3) blank preheating (4) mold preheating (5) spray release agent, forging, demoulding (6) cold-trim(ming).Forging method of the present invention, complex-shaped, thin-walled, the dimensional accuracy high helmet magnesium lithium-base alloy rail guide piece can be produced, solves the problems, such as the die forging precise forming of magnesium lithium-base alloy thin-walled forging, tensile strength is sampled on rail guide piece and is greater than 145MPa, elasticity modulus greater than 40GPa greater than 150MPa, bending strength, and the service life of helmet rail guide piece product greatly improved.
Description
Technical field
The present invention relates to a kind of helmet forging methods of magnesium lithium-base alloy rail guide piece.
Background technique
Magnesium lithium alloy has many advantages, such as high specific strength, high specific stiffness, also has good electromagnetic shielding, shockproof, is realizing
There is significant advantage in terms of lightweight, therefore, have wide application in communication electronics industry, military project and aerospace field
Prospect.The thin forging molding process of magnesium alloy wall is described in 12345641 A of CN, Wu Lihong, Guan Shaokang et al. have studied magnesium conjunction
The forging molding process of gold, but the forging technology about magnesium lithium-base alloy is not yet seen in report.Due to magnesium lithium-base alloy property
Vivaciously, inflammable, forging temperature section is narrow, and crackle is easy to appear in forging, forms the defects of imperfect.The present invention solves wall
The problem of difficult forming, can produce complex-shaped, thin-walled, ruler in the magnesium lithium-base alloy workpiece preparation process thin, Wall-Thickness Difference is big
The very little helmet with high accuracy magnesium lithium-base alloy rail guide piece.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of helmet forging molding sides of magnesium lithium-base alloy rail guide piece
Method.
In order to solve the above technical problems, the technical solution adopted by the present invention:
A kind of method for forging and molding of helmet magnesium lithium-base alloy rail guide piece, it is basic the following steps are included:
(1) preparation of plate blank, mold design (2) blank ageing treatment (3) blank preheating (4) mold preheating (5) spraying demoulding
Agent, forging, demoulding (6) cold-trim(ming).
The content of Li in the magnesium lithium alloy are as follows: 2 ~ 18wt%.
The magnesium lithium-base alloy that the blank is prepared as certain size squeezes, rolls or forges plate, and blank is 150 ~ 300
DEG C carry out timeliness 8h ageing treatment.
The coefficient of expansion of the mold reference magnesium lithium-base alloy, is designed using open die forging, impressing forging, mold electric heating tube in drier dress
It sets, heating and thermal insulation can be carried out at 50 ~ 500 DEG C.
The blank pre-heating technique is in 150 ~ 350 DEG C of temperature and to keep the temperature 0.5 ~ 6h.
The spraying release agent, forging, knockout course are that release agent is sprayed in mold cavity, are then carried out to blank
Forging, forging temperature are controlled at 150 ~ 400 DEG C.It after forging molding, is demoulded at once, knockout course prevents forging from deforming.
The cold-trim(ming) technique are as follows: after forging is completely cooling, forging is carried out at trimming using specific shaving die
Reason.
It is high that forging method provided by the invention has the following characteristics that (1) can produce complex-shaped, thin-walled, dimensional accuracy
Helmet magnesium lithium-base alloy rail guide piece, greatly improved helmet rail guide piece product service life (2) solve magnesium lithium base conjunction
The die forging precise forming problem of golden thin-walled forging.Method of the invention can make magnesium lithium-base alloy in molding and workpiece preparation field
In be used widely.
Detailed description of the invention
Fig. 1 is the forging flow chart of helmet magnesium lithium alloy rail guide piece.
Specific embodiment
In order to enable advantages and features of the invention to be easier to be readily appreciated by one skilled in the art, below to reality of the invention
The process of applying is described in detail.
Embodiment 1
According to forging drawing paper size, select with a kind of magnesium lithium alloy (LA141) extrusion plate of fabricated part adjoining dimensions as
Blank 1, and the mold using open die forging, impressing forging design.Blank 1 is placed on heating in heating furnace 2 and carries out ageing treatment, timeliness mistake
The technological parameter of journey is 200 ~ 210 DEG C of timeliness 8h, and the blank 3 after timeliness is then warming up to 235 ~ 245 DEG C of temperature again and is kept the temperature
1h.By electric calorifie installation 4 upper mold 5 and lower mold 7 heat simultaneously and 230 ~ 240 DEG C at a temperature of keep the temperature.
Spraying water based mold release agent is required according to technique in mold cavity.After completing above-mentioned work, the blank 6 heated is placed on heating
In mold afterwards, blank is forged by 630T friction press, forging temperature controls between 225 ~ 235 DEG C.Forging
Magnesium lithium alloy workpiece is demoulded at once after the completion.After cooling down completely, forging 8 is cut using specific shaving die 9
Side processing.Forging 10 after trimming is subjected to the production finished product such as subsequent machining.
Embodiment 2
According to forging drawing paper size, select with a kind of magnesium lithium alloy (LA91) rolled plate of fabricated part adjoining dimensions as base
Material 1, and the mold using open die forging, impressing forging design.Blank 1 is placed on heating in heating furnace 2 and carries out ageing treatment, ag(e)ing process
Technological parameter be 230 ~ 240 DEG C of timeliness 8h, the blank 3 after timeliness is then warming up to 250 ~ 260 DEG C of temperature again and is kept the temperature
3.5h.By electric calorifie installation 4 upper mold 5 and lower mold 7 heat simultaneously and 240 ~ 250 DEG C at a temperature of protect
Temperature.Spraying oil-based release agent is required according to technique in mold cavity.After completing above-mentioned work, the blank 6 heated is placed on
In mold after heating, blank is forged by 630T friction press, forging temperature controls between 235 ~ 245 DEG C.
Magnesium lithium alloy workpiece is demoulded at once after the completion of forging.After completely cooling, using specific shaving die 9 to forging 8 into
Row trimming processing.Forging 10 after trimming is subjected to the production finished product such as subsequent machining.
Embodiment 3
According to forging drawing paper size, select with a kind of magnesium lithium alloy (LZ141) of fabricated part adjoining dimensions forging plate as
Blank 1, and the mold using open die forging, impressing forging design.Blank 1 is placed on heating in heating furnace 2 and carries out ageing treatment, timeliness mistake
The technological parameter of journey is 210 ~ 220 DEG C of timeliness 8h, and the blank 3 after timeliness is then warming up to 240 ~ 250 DEG C of temperature again and is kept the temperature
5h.By electric calorifie installation 4 upper mold 5 and lower mold 7 heat simultaneously and 230 ~ 240 DEG C at a temperature of keep the temperature.
Spraying oil-based release agent is required according to technique in mold cavity.After completing above-mentioned work, the blank 6 heated is placed on heating
In mold afterwards, blank is forged by 630T friction press, forging temperature controls between 220 ~ 230 DEG C.Forging
Magnesium lithium alloy workpiece is demoulded at once after the completion.After cooling down completely, forging 8 is cut using specific shaving die 9
Side processing.Forging 10 after trimming is subjected to the production finished product such as subsequent machining.
Described is only the embodiment of the present invention, is not intended to limit the scope of the invention, all to be said using the present invention
Equivalent structure made by bright book and Detailed description of the invention content, equivalent process transformation are directly used in other relevant technology necks indirectly
Domain is included within the scope of the present invention.
Claims (8)
1. a kind of helmet forging method of magnesium lithium-base alloy rail guide piece includes the following steps: the preparation of (1) plate blank, mold
It designs (2) blank ageing treatment (3) blank preheating (4) mold preheating (5) and sprays release agent, forging, demoulding (6) cold-trim(ming).
2. plate blank according to claim 1, it is characterised in that: in the magnesium lithium-base alloy content of Li be 2 ~
18wt%。
3. plate blank according to claim 1, it is characterised in that: the plate can pass through extruding, rolling or forging
Mode obtain.
4. mold design according to claim 1, it is characterised in that: with reference to the coefficient of expansion of magnesium lithium-base alloy, using mould
Forging design, mold electric heating tube in drier device can carry out heating and thermal insulation at 50 ~ 500 DEG C.
5. blank ageing treatment according to claim 1, it is characterised in that: blank is in 150 ~ 300 DEG C of progress ageing treatments 4
~10h。
6. blank according to claim 1 preheating, it is characterised in that: blank pre-heating technique be 150 ~ 350 DEG C of temperature simultaneously
Keep the temperature 0.5 ~ 6h.
7. forging according to claim 1, knockout course, it is characterised in that: forging temperature is controlled at 150 ~ 400 DEG C.
8. cold-trim(ming) according to claim 1, it is characterised in that: after forging is completely cooling, use specific shaving die
Trimming processing is carried out to forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196454.5A CN109127974A (en) | 2018-10-15 | 2018-10-15 | A kind of forging method of helmet magnesium lithium-base alloy guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196454.5A CN109127974A (en) | 2018-10-15 | 2018-10-15 | A kind of forging method of helmet magnesium lithium-base alloy guide rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109127974A true CN109127974A (en) | 2019-01-04 |
Family
ID=64811864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196454.5A Pending CN109127974A (en) | 2018-10-15 | 2018-10-15 | A kind of forging method of helmet magnesium lithium-base alloy guide rail |
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| CN (1) | CN109127974A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675995A (en) * | 2019-01-18 | 2019-04-26 | 宝鸡市金海源钛标准件制品有限公司 | A kind of MA21 magnesium lithium alloy shaped piece heat distortion device and heat distortion technique |
Citations (8)
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|---|---|---|---|---|
| CN1903477A (en) * | 2005-07-27 | 2007-01-31 | 中国科学院金属研究所 | Hot press-forging formation method for magnesium alloy thin shells, and special mould therefor |
| CN101214600A (en) * | 2008-01-10 | 2008-07-09 | 重庆大学 | Magnesium alloy compositely forming method |
| CN101921922A (en) * | 2009-06-12 | 2010-12-22 | 安立材料科技股份有限公司 | Manufacturing method of magnesium alloy and magnesium alloy |
| CN102357631A (en) * | 2011-10-28 | 2012-02-22 | 中国兵器工业第五九研究所 | Forming method for magnesium alloy part |
| CN104004949A (en) * | 2014-05-21 | 2014-08-27 | 上海交通大学 | Method for preparing high strength magnesium-lithium alloy |
| CN106947901A (en) * | 2017-04-28 | 2017-07-14 | 苏州轻金三维科技有限公司 | A kind of high-strength high-elasticity modulus Mg Li composites and preparation method thereof |
| CN107541630A (en) * | 2016-06-29 | 2018-01-05 | 中国科学院金属研究所 | Effectively strengthen two-phase Mg Li Zn Y magnesium lithium alloys and preparation method using rare earth element y |
| CN107723545A (en) * | 2017-10-23 | 2018-02-23 | 江苏立美航材科技有限公司 | A kind of low-density and high-strength magnesium lithium alloy and preparation method thereof |
-
2018
- 2018-10-15 CN CN201811196454.5A patent/CN109127974A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1903477A (en) * | 2005-07-27 | 2007-01-31 | 中国科学院金属研究所 | Hot press-forging formation method for magnesium alloy thin shells, and special mould therefor |
| CN101214600A (en) * | 2008-01-10 | 2008-07-09 | 重庆大学 | Magnesium alloy compositely forming method |
| CN101921922A (en) * | 2009-06-12 | 2010-12-22 | 安立材料科技股份有限公司 | Manufacturing method of magnesium alloy and magnesium alloy |
| CN102357631A (en) * | 2011-10-28 | 2012-02-22 | 中国兵器工业第五九研究所 | Forming method for magnesium alloy part |
| CN104004949A (en) * | 2014-05-21 | 2014-08-27 | 上海交通大学 | Method for preparing high strength magnesium-lithium alloy |
| CN107541630A (en) * | 2016-06-29 | 2018-01-05 | 中国科学院金属研究所 | Effectively strengthen two-phase Mg Li Zn Y magnesium lithium alloys and preparation method using rare earth element y |
| CN106947901A (en) * | 2017-04-28 | 2017-07-14 | 苏州轻金三维科技有限公司 | A kind of high-strength high-elasticity modulus Mg Li composites and preparation method thereof |
| CN107723545A (en) * | 2017-10-23 | 2018-02-23 | 江苏立美航材科技有限公司 | A kind of low-density and high-strength magnesium lithium alloy and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675995A (en) * | 2019-01-18 | 2019-04-26 | 宝鸡市金海源钛标准件制品有限公司 | A kind of MA21 magnesium lithium alloy shaped piece heat distortion device and heat distortion technique |
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