CN107598129A - A kind of magnesium alloy seamless closure frame and its semi-solid forming method - Google Patents
A kind of magnesium alloy seamless closure frame and its semi-solid forming method Download PDFInfo
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- CN107598129A CN107598129A CN201710975341.4A CN201710975341A CN107598129A CN 107598129 A CN107598129 A CN 107598129A CN 201710975341 A CN201710975341 A CN 201710975341A CN 107598129 A CN107598129 A CN 107598129A
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- 238000007493 shaping process Methods 0.000 claims abstract description 31
- 239000000047 product Substances 0.000 claims abstract description 26
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- 238000000265 homogenisation Methods 0.000 claims abstract description 5
- 238000011282 treatment Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 22
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Abstract
The invention discloses a kind of magnesium alloy seamless closure frame and its semi-solid forming method, as-cast magnesium alloy material is preheated, extruded, is cut, the shaping of electromagnetic induction heating, vacuum high-pressure, cooling and demolding and heat treatment, using strain-induced melt activation, the extruding that heated up after column as cast condition material Homogenization Treatments is obtained into extrusion plate, extrusion plate is inserted in load coil again, by 60 100s, obtain semi-solid blank, by mold system rapid vacuumizing, then blank is placed on the mould having been warmed up, then carries out high-voltage high-speed shaping.The present invention replaces aluminium alloy with magnesium alloy and makes no-welding-seam closure frame or box, before semi-solid forming, sufficiently large plastic deformation is provided, it ensure that material crystal grain during Semi-solid Material Processing will not occur drastically to grow up, ensure that final product quality is controllable, and the tissue of excellent moldability can be quickly obtained, production efficiency and the combination property of finished product, the labyrinth of the quick one-shot forming magazine of energy can be improved.
Description
Technical field
The present invention relates to a kind of forming method, more particularly to a kind of magnesium alloy seamless closure frame and its semi-solid forming side
Method.
Background technology
It is well known that magnesium alloy has, density is low, specific strength is high, specific modulus is high, capability of electromagnetic shielding is good, damped coefficient
Greatly, it is easy to absorb vibration, stability is high in alkaline environment, corrosion product does not float in aqueous, manufacturing cost is low, resource
The advantages that extensive, gradually it is widely applied in the modern industry manufacture.Magnesium alloy makes transistor integrated circuit (IC) support
Magazine, (lighter 35-45% than the support magazine of existing aluminum alloy material) in light weight can be reached, be offered convenience for operation, saved
Strength, operator's arm is not damaged, and chemical property stabilization, alkali resistance environment capacity are strong under alkaline environment, and remote super aluminium closes
Gold；Corrosion product under general aqueous environment is easy to precipitate, and can conveniently control, and aluminium alloy forms solvable-hydrolysate,
Compound precipitation is difficult to control, easy polluted product, and the casting that magnesium alloy makes product generally use comparative maturity (for example is pressed
Power is cast), extrusion etc., but many product components are complex-shaped, and die casting was due to containing fine and closely woven scattered stomata, testing
Organizational structure is unstable in journey is easily caused leakage and performance reduction, and the parts of complicated shape can not be smoothly stripped, thus
Casting die can not be utilized to produce；Dense structure after extruding, but larger amount of subsequent mechanical processing is needed, cause manufacturing cost hurricane
Rise, reduce competitive advantage, semisolid forging general flow is first directly using as cast condition material or first to enter as cast condition material
Row plastic deformation, is plastically deformed the deformation energy storage of accumulation in follow-up Semi-solid Material Processing, can suppress material grains and drastically grow up, so
To semi solid zone, general semi-solid forming needs to ensure that tissue liquid fraction is 35%-65% material warms, finally will be partly solid afterwards
State blank, which is placed in mould, carries out high-voltage high-speed shaping, is solidified simultaneously in forming process, because semisolid tool thixotroping is special
Property, therefore it is very capable in certain pressure effect lower charging type, being capable of one-shot forming parts with complex structures.
The semi-solid rheological casting mainly used in the prior art, to undergo fusing, control is cooled to semi-solid temperature, tight
The stirring of close control such as transports at the link, and process is complicated, and reliability is low, simultaneously because the full liquid process of fusing is experienced, thus
The more difficult control of high energy consumption, long flow path, system complex, sport technique segment, thus maturity is low, and in general thixotroping method is not due to having
Have blank is carried out in advance be plastically deformed activation processing, semisolid preparation process activation point less, skewness, using routine
Resistance heating method, thus liquid phase forms that uneven, solid phase particles size is big, and can fast growth, reduce the performance of product
Index, conventional thixotropic are molded in semi-solid blank heating, transfer, forming process, oxidizable scaling loss, cause finished product internal oxidation
It is mingled with or many defects such as surface forming deficiency, and Semi-Solid Thixoforming forming technique uses resistance stove heat, has high-temperature region
Domain (semi-solid formation region) needs liquidus point skewness, blank center portion in time length, blank-surface element solid rate distribution
The shortcomings of uneven, the aluminium alloy semiconductor magazine magnesium alloy product weight that compares is big, operates inconvenient, aluminium alloy amphoteric metal
Feature causes it in acid or alkali environment bad adaptability, higher quality of production hidden danger be present, existing extruding production technology, yield rate compared with
Low, allowance is big, and cycle length, cost is high, and traditional semisolid production method fails effectively to avoid material in molding process
In oxidation defect, the roughening of material grains size is serious, and compactness is relatively low, and defect concentration is higher, it is difficult to ensures stable high-quality amount
Mechanical property.
The content of the invention
The technical problem to be solved in the present invention is the defects of overcoming prior art, there is provided a kind of magnesium alloy seamless closure frame
And its semi-solid forming method, magazine is made to replace aluminium alloy, can largely mitigate hand labor pressure, in semisolid
Before shaping, using the teaching of the invention it is possible to provide sufficiently large plastic deformation, ensure that material crystal grain during Semi-solid Material Processing will not occur drastically
Grow up, and final product quality is controllable, can quickly obtain the tissue of excellent moldability, the comprehensive of production efficiency and finished product can be improved
Can, the labyrinth of the quick one-shot forming magazine of energy, reduce amount of machining.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
A kind of magnesium alloy seamless closure frame of the present invention, including seamless closure frame body, the seamless closure frame sheet
The both sides external of body is provided with outside groove, and the inside both sides of the seamless closure frame body are provided with some grooves.
The invention provides following second technical scheme：
Present invention also offers this magnesium alloy semi solid state forming method, its processing step are as follows：
As cast condition material, preheating, extruding, cutting, electromagnetic induction heating, vacuum high-pressure shaping, cooling and demolding and heat treatment, are adopted
With strain-induced melt activation, extruded being heated up after column as cast condition material Homogenization Treatments, extrude the sheet material a for fixed dimension
B is multiplied by, is that length dimension is c by plate cutting, then sheet material is inserted in load coil, by 60-100s, it is solid to obtain half
State blank, blank is then placed on the mould having been warmed up by mold system rapid vacuumizing, then carries out high-voltage high-speed
Shaping, after the completion of shaping, outside mould inside is continually fed into cold air cooling mould, after temperature drops to certain numerical value, at once
The demoulding, except being heat-treated after deburring；
The preheating temperature of as cast condition material and time are strictly controlled, 300 DEG C -350 DEG C of preheating temperature, preheating time 3-5
Hour, appropriate adjustment can be made according to the size and the known efficiency of heating surface of material category and material；
Before the extruded shape of material is fixed, extrusion ratio is strictly controlled, in 12-25, material squeezes the extrusion ratio of material
Go out smooth, grain refining effect is obvious, and corresponding adjustment can be made according to actual conditions, and material recipient temperature is strictly controlled
System, recipient temperature need to be less than 20 DEG C or so of material preheater temperature；
Sensing heating process, sensing heating frequency, power, time are strictly controlled, and sensing heating frequency is left in 2kHz
The right side, heating power control the programming rate of material, and for heating power in 5kW or so, the heat time influences the temperature of material, and then controls
The ratio of solid liquid phase processed, time can reach optimal shaping demand in 60s or so, liquid fraction, can be according to the size of raw material
Appropriate adjustment is made to electromagnetic induction power and time with material category；
After mold system vacuumizes rapidly, the blank of sensing heating to semisolid is moved on the mould having been warmed up,
Mould needs to be preheating to higher temperature, prevent blank also it is unformed completely when solidify, influence mold-filling capacity, mold preheating temperature
There is good mold-filling capacity at 550 DEG C or so, and final product quality is good, after the completion of blank movement, carries out high-pressure molding rapidly,
Briquetting pressure is 100-300kN, it is necessary to quickly cool down after the completion of shaping, to obtain good combination property, after the completion of pressure
Pressurize 5s, then in the gap of mould, cold air is continually fed into, it is rapid de- when 10s rear mold temperature drops to 450 DEG C
Mould, knockout course need inside and outside mold system separation, appropriate heat treatment will be carried out after molding part deburring, to improve finished product mechanics
Performance, stable dimensions, mould is transferred in heating furnace and heated up again, prepare next shaping.
Compared with prior art, beneficial effects of the present invention are as follows：
1：The present invention produces the support frame using semisolid forging method, the labyrinth in closure frame and frame wall
Production efficiency can be increased substantially with one-shot forming, reduce production cost, Semi-Solid Thixoforming is triggered using prestrain
Shaping, preparation process quickly heat including the previously extruded processing of blank, accurate blanking, previously-introduced appropriate plastic deformation, twin-stage
Semisolid preparation, isothermal fast vacuum injection molding, rapid forge, complete precise forming, make the solid phase ball size in semisolid it is tiny,
It is evenly distributed, is easily controllable, the microscopic structure fine uniform in workpiece after the forging molding that presses, ensures excellent mechanical property
And chemical uniformity, using the preheating of resistance furnace low-temperature zone, high temperature section electromagnetic induction heating, quick, uniform semisolid system can be achieved
It is standby, solid-phase grain can be controlled not occur to be significantly roughened, and load coil spatial volume is small, can be conveniently mounted to nearby
In formation system, it can immediately enter after the completion of semisolid preparation and operate in next step, greatly simplify process, ensure that product product
Matter, improve production efficiency.
2：The present invention to replace aluminium alloy make magazine, can largely mitigate hand labor pressure, semisolid into
Before type, using the teaching of the invention it is possible to provide sufficiently large plastic deformation, ensure that material crystal grain during Semi-solid Material Processing will not occur drastically to grow
Greatly, and final product quality is controllable, can quickly obtain the tissue of excellent moldability, can improve the comprehensive of production efficiency and finished product
Can, the labyrinth of the quick one-shot forming magazine of energy, amount of machining is reduced, improves efficiency, it is cost-effective.
3：The present invention is using type vacuum injecting and forming, forging high-voltage high-speed shaping so that finished product tissue is more densely cross-linked, and defect concentration is big
Width declines, and obtains good mechanical performance, semi-solid forming product in apparent good order and condition, simultaneously effective prevents magnesium alloy half
Solid blank aoxidizes and burning, carries out vacuum casting to prepared semi-solid blank using forging method, forging pressure applies
Time is short, is adapted to quick precise forming, has that filling velocity is fast, fills that type is complete, crystallization rate is fast, crystallization time is short, crystallization is brilliant
The advantages that grain is tiny, uniform, is adapted for carrying out producing in batches.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Apply example to be used to explain the present invention together, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the molding part structural representation of the present invention；
Fig. 2 is the modular structure schematic diagram of the present invention；
In figure：1st, seamless closure frame body；2nd, outside groove；3rd, bar groove.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figure 1-2, the present invention provides a kind of magnesium alloy seamless closure frame, including seamless closure frame body 1, nothing
The both sides external of seam closure frame body 1 is provided with outside groove 2, and the inside both sides of seamless closure frame body 1 are provided with
Some grooves 3.
A kind of magnesium alloy semi solid state forming method, its processing step are as follows：
As cast condition material, preheating, extruding, cutting, electromagnetic induction heating, vacuum high-pressure shaping, cooling and demolding and heat treatment, are adopted
With strain-induced melt activation, extruded being heated up after column as cast condition material Homogenization Treatments, extrude the sheet material for fixed dimension
70mm is multiplied by 70mm, is size 100mm by plate cutting, then sheet material is inserted in load coil, by 60-100s, obtains
To semi-solid blank, blank is then placed on the mould having been warmed up by mold system rapid vacuumizing, then carried out high
Rapid shaping is pressed, after the completion of shaping, outside mould inside is continually fed into cold air cooling mould, and certain numerical value is dropped in temperature
Afterwards, it is stripped at once, except being heat-treated after deburring；
The preheating temperature of as cast condition material and time are strictly controlled, 300 DEG C -350 DEG C of preheating temperature, preheating time 3-5
Hour, appropriate adjustment can be made according to the size and the known efficiency of heating surface of material category and material, preheating time is too short, material
There is no heat penetration, cause subsequent extrusion difficult, structural homogenity is poor；Preheating time is long, and material grains can occur substantially to grow up, meeting
Have a strong impact on the performance of extruded material；Preheating temperature is too low to cause material extrusion difficult, and recrystallizes insufficient and formed thick
Very much not uniform tissue；Too high temperature can cause the burning of material or abnormal thick crystal grain.Preheating temperature and retention time
The life-span of extrusion efficiency and extrusion die will be influenceed, through studying, 300 DEG C -350 DEG C of preheating temperature, hour preheating time 3-5,
Those skilled in the art can make appropriate adjustment according to the size and the known efficiency of heating surface of material category and material；
Before the extruded shape of material is fixed, extrusion ratio is strictly controlled, in 12-25, material squeezes the extrusion ratio of material
Go out smooth, grain refining effect is obvious, and corresponding adjustment can be made according to actual conditions, and material recipient temperature is strictly controlled
System, recipient temperature needs to be less than 20 DEG C or so of material preheater temperature, and extrusion ratio is too small, the deformation energy storage that material is included compared with
Small, crystal grain can persistently be grown up in follow-up Semi-solid Material Processing；When extrusion ratio is excessive, the thinning effect of crystal grain can become gentle, material
Material can extrude difficulty, reduce production efficiency, or even cause Sai Mo and mold damage, and by numerous studies, the extrusion ratio of material exists
During 12-25, material extrusion is smooth, and grain refining effect is obvious, extrusion ratio can it is different with the magnesium alloy species of selection and
Difference, those skilled in the art can rule of thumb make corresponding adjustment, and material recipient temperature is also required to strictly control, extruding
Cylinder temperature needs to be less than 20 DEG C or so of material preheater temperature, and extruded material performance is optimal；
Sensing heating process, sensing heating frequency, power, time are strictly controlled, and sensing heating frequency is left in 2kHz
The right side, heating power control the programming rate of material, and for heating power in 5kW or so, the heat time influences the temperature of material, and then controls
The ratio of solid liquid phase processed, time can reach optimal shaping demand in 60s or so, liquid fraction, can be according to the size of raw material
Appropriate adjustment is made to electromagnetic induction power and time with material category, too high electromagnetic frequency can cause material uneven heating,
Subsequent forming is had a strong impact on, heating power controls the programming rate of material, and too high programming rate can cause uneven heating, organizes
Hardly possible control, and too low power makes material warms speed slow, tissue is grown up substantially, is learnt through research, for this product, heats work(
Rate is in 5kW or so, and the heat time influences the temperature of material, and then controls the ratio of solid liquid phase, and overlong time, temperature is too high, base
The liquid fraction of material is too high, and the shape of material can be caused to cave in, it is difficult to which transfer operation, the air of the interior dissolving of liquid phase is in process of setting
Separate out, the casting flaw density increase such as stomata, can reach most in 60s or so, liquid fraction for this material and this product time
Good shaping demand, this area investigative technique personnel can according to the sizes of raw material and material category to electromagnetic induction power and when
Between make appropriate adjustment；
After mold system vacuumizes rapidly, the blank of sensing heating to semisolid is moved on the mould having been warmed up,
Mould needs to be preheating to higher temperature, prevent blank also it is unformed completely when solidify, influence mold-filling capacity, mold preheating temperature
There is good mold-filling capacity at 550 DEG C or so, and final product quality is good, after the completion of blank movement, carries out high-pressure molding rapidly,
Briquetting pressure is 100-300kN, it is necessary to quickly cool down after the completion of shaping, to obtain good combination property, after the completion of pressure
Pressurize 5s, then in the gap of mould, cold air is continually fed into, it is rapid de- when 10s rear mold temperature drops to 450 DEG C
Mould, knockout course need inside and outside mold system separation, appropriate heat treatment will be carried out after molding part deburring, to improve finished product mechanics
Performance, stable dimensions, mould is transferred in heating furnace and heated up again, prepare next shaping, preheating temperature is too high, blank into
Can not quickly it be cooled down after type, end properties can decline.
During specific use, using strain-induced melt activation, it will be risen after column as cast condition material Homogenization Treatments
Warm Extrusion, extrude and be multiplied by b for the sheet material a of fixed dimension, be that length dimension is c by plate cutting, then sheet material is inserted into sensing and added
In heat coil, by 60-100s, semi-solid blank is obtained, blank is then placed on by mold system rapid vacuumizing
On the mould of preheating, high-voltage high-speed shaping is then carried out, after the completion of shaping, outside mould inside is continually fed into cold air cooling mould
Tool, after temperature drops to certain numerical value, is stripped at once, except being heat-treated after deburring, the wherein preheating temperature of as cast condition material
Strictly controlled with the time, 300 DEG C -350 DEG C of preheating temperature hour preheating time 3-5, can be according to material category and material
Size and the known efficiency of heating surface make appropriate adjustment, wherein material extruded shape fix before, extrusion ratio is strictly controlled,
For the extrusion ratio of material in 12-25, material extrusion is smooth, and grain refining effect is obvious, can be made according to actual conditions accordingly
Adjustment, material recipient temperature are strictly controlled, and recipient temperature needs to be less than 20 DEG C or so of material preheater temperature, wherein feeling
Heating process is answered, sensing heating frequency, power, time are strictly controlled, and sensing heating frequency is in 2kHz or so, heating power
The programming rate of material is controlled, for heating power in 5kW or so, the heat time influences the temperature of material, and then controls solid liquid phase
Ratio, time can reach optimal shaping demand in 60s or so, liquid fraction, can be according to the size and material category of raw material
Appropriate adjustment is made to electromagnetic induction power and time, after wherein mold system vacuumizes rapidly, by sensing heating to semisolid
Blank be moved on the mould having been warmed up, mould needs to be preheating to higher temperature, prevents blank when also unformed complete
Solidification, influences mold-filling capacity, mold preheating temperature has good mold-filling capacity at 550 DEG C or so, and final product quality is good, base
After the completion of material is mobile, high-pressure molding is carried out rapidly, briquetting pressure 100-300kN, it is necessary to quickly cool down after the completion of shaping, with
Good combination property is obtained, the pressurize 5s after the completion of pressure, then in the gap of mould, cold air is continually fed into, in 10s
When rear mold temperature drops to 450 DEG C, quicker de-mold, knockout course need inside and outside mold system separation, by molding part deburring
After carry out appropriate heat treatment, to improve finished product mechanical property, stable dimensions, mould is transferred in heating furnace and heated up again, it is accurate
Standby next shaping.
The present invention produces the support frame using semisolid forging method, and the labyrinth in closure frame and frame wall can
With one-shot forming, production efficiency can be increased substantially, reduce production cost, using prestrain trigger Semi-Solid Thixoforming into
Type, preparation process include the previously extruded processing of blank, accurate blanking, previously-introduced appropriate plastic deformation, twin-stage quickly heating half
Solid-state preparation, isothermal fast vacuum injection molding, rapid forge, complete precise forming, make the solid phase ball size in semisolid it is tiny, point
Cloth is uniform, easily controllable, press forging molding after workpiece in microscopic structure fine uniform, ensure excellent mechanical property and
Chemical uniformity, using the preheating of resistance furnace low-temperature zone, high temperature section electromagnetic induction heating, quick, uniform semisolid can be achieved and prepare,
Solid-phase grain can be controlled not occur to be significantly roughened, and load coil spatial volume is small, can be conveniently mounted into nearby
In type system, it can immediately enter after the completion of semisolid preparation and operate in next step, greatly simplify process, ensure that product product
Matter, production efficiency is improved, make magazine to replace aluminium alloy, can largely mitigate hand labor pressure, in semisolid
Before shaping, using the teaching of the invention it is possible to provide sufficiently large plastic deformation, ensure that material crystal grain during Semi-solid Material Processing will not occur drastically
Grow up, and final product quality is controllable, can quickly obtain the tissue of excellent moldability, the comprehensive of production efficiency and finished product can be improved
Can, can quick one-shot forming magazine labyrinth, reduce amount of machining, improve efficiency, it is cost-effective, using type vacuum injecting and forming,
Forge high-voltage high-speed shaping so that finished product tissue is more densely cross-linked, and defect concentration declines to a great extent, and obtains good mechanical performance, surface
Semi-solid forming product in good condition, magnesium alloy semi-solid state blank is simultaneously effective prevented to aoxidize and burn, using forging
Method is short to prepared semi-solid blank progress vacuum casting, forging pressure application time, is adapted to quick precise forming, has
Filling velocity is fast, fills the advantages that type is complete, crystallization rate is fast, crystallization time is short, crystal grain is tiny, uniform, is adapted for carrying out criticizing
Amount production.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of magnesium alloy seamless closure frame, including seamless closure frame body (1), it is characterised in that the seamless closure
The both sides external of frame body (1) is provided with outside groove (2), and the inside both sides of the seamless closure frame body (1) are set
It is equipped with some grooves (3).
2. a kind of magnesium alloy semi solid state forming method, it is characterised in that its processing step is as follows：
A. as cast condition material, preheating, extruding, cutting, electromagnetic induction heating, vacuum high-pressure shaping, cooling and demolding and heat treatment, are used
Strain-induced melt activation, extruded being heated up after column as cast condition material Homogenization Treatments, extrude and multiply for the sheet material a of fixed dimension
It is that length dimension is c by plate cutting with b, then sheet material is inserted in load coil, by 60-100s, obtains semisolid
Blank, blank is then placed on the mould having been warmed up by mold system rapid vacuumizing, then carry out high-voltage high-speed into
Type, after the completion of shaping, outside mould inside is continually fed into cold air cooling mould, after temperature drops to certain numerical value, takes off at once
Mould, except being heat-treated after deburring, the preheating temperature of as cast condition material and time are strictly controlled, and 300 DEG C of preheating temperature-
350 DEG C, hour preheating time 3-5, appropriate adjustment can be made according to the size and the known efficiency of heating surface of material category and material；
B. before the extruded shape of material is fixed, extrusion ratio is strictly controlled, the extrusion ratio of material is in 12-25, material extrusion
Smooth, grain refining effect is obvious, and corresponding adjustment can be made according to actual conditions, and material recipient temperature is strictly controlled
System, recipient temperature need to be less than 20 DEG C or so of material preheater temperature；
C. sensing heating process, sensing heating frequency, power, time are strictly controlled, sensing heating frequency in 2kHz or so,
Heating power controls the programming rate of material, and for heating power in 5kW or so, the heat time influences the temperature of material, and then controls
The ratio of solid liquid phase, the time, liquid fraction can reach optimal shaping demand in 60s or so, can according to the sizes of raw material and
Material category makes appropriate adjustment to electromagnetic induction power and time；
D. after mold system vacuumizes rapidly, the blank of sensing heating to semisolid is moved on the mould having been warmed up, mould
Tool needs to be preheating to higher temperature, prevents blank from solidifying when also unformed complete, influences mold-filling capacity, mold preheating temperature exists
550 DEG C or so have good mold-filling capacity, and final product quality is good, after the completion of blank movement, carry out high-pressure molding rapidly, into
Type pressure is 100-300kN, it is necessary to quickly cool down after the completion of shaping, to obtain good combination property, is protected after the completion of pressure
5s is pressed, then in the gap of mould, is continually fed into cold air, when 10s rear mold temperature drops to 450 DEG C, quicker de-mold,
Mold system separation, will carry out appropriate heat treatment, to improve finished product mechanical property after molding part deburring inside and outside knockout course needs
Can, stable dimensions, mould is transferred in heating furnace and heated up again, prepare next shaping.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111136434A (en) * | 2019-11-06 | 2020-05-12 | 苏州朗威电子机械股份有限公司 | Method for folding processing plate of server cabinet |
| CN113930699A (en) * | 2021-10-14 | 2022-01-14 | 山东大学 | Processing technology for inhibiting coarse grains of welding seam of magnesium alloy profile |
| CN117845093A (en) * | 2024-03-07 | 2024-04-09 | 太原理工大学 | Preparation method of SiC/AZ91 composite material impregnated by vacuum air pressure |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079477A (en) * | 1998-01-26 | 2000-06-27 | Amcan Castings Limited | Semi-solid metal forming process |
| CN2689945Y (en) * | 2004-03-18 | 2005-04-06 | 贺滨 | Seamless panel frame for sterilizing cupboard |
| CN103231002A (en) * | 2013-04-19 | 2013-08-07 | 亚超特工业有限公司 | Forging mould and molding method of metal casing applied to electronic device |
| CN104493429A (en) * | 2014-10-31 | 2015-04-08 | 西安交通大学 | Strain-induced semi-solid forming process and die for magnalium mobile phone shells |
| CN104525829A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Radial forging strain-induced semi-solid state process for manufacturing aluminum alloy crankshaft of air condition compressor |
| CN104561852A (en) * | 2014-12-26 | 2015-04-29 | 西安交通大学 | Process for preparing semi-solid state aluminum alloy scroll plate by radial forging strain induction method |
| CN104624914A (en) * | 2014-12-26 | 2015-05-20 | 西安交通大学 | Semisolid process for manufacturing engine aluminum alloy cam shaft through radial forging strain provocation method |
| CN106363363A (en) * | 2016-11-12 | 2017-02-01 | 湘潭大学 | Semi-solid thixo-forging forming technology for steel impeller |
| CN207255200U (en) * | 2017-10-16 | 2018-04-20 | 崇州天智轻量化制造有限公司 | A kind of magnesium alloy seamless closure frame |
-
2017
- 2017-10-16 CN CN201710975341.4A patent/CN107598129A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079477A (en) * | 1998-01-26 | 2000-06-27 | Amcan Castings Limited | Semi-solid metal forming process |
| CN2689945Y (en) * | 2004-03-18 | 2005-04-06 | 贺滨 | Seamless panel frame for sterilizing cupboard |
| CN103231002A (en) * | 2013-04-19 | 2013-08-07 | 亚超特工业有限公司 | Forging mould and molding method of metal casing applied to electronic device |
| CN104493429A (en) * | 2014-10-31 | 2015-04-08 | 西安交通大学 | Strain-induced semi-solid forming process and die for magnalium mobile phone shells |
| CN104525829A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Radial forging strain-induced semi-solid state process for manufacturing aluminum alloy crankshaft of air condition compressor |
| CN104561852A (en) * | 2014-12-26 | 2015-04-29 | 西安交通大学 | Process for preparing semi-solid state aluminum alloy scroll plate by radial forging strain induction method |
| CN104624914A (en) * | 2014-12-26 | 2015-05-20 | 西安交通大学 | Semisolid process for manufacturing engine aluminum alloy cam shaft through radial forging strain provocation method |
| CN106363363A (en) * | 2016-11-12 | 2017-02-01 | 湘潭大学 | Semi-solid thixo-forging forming technology for steel impeller |
| CN207255200U (en) * | 2017-10-16 | 2018-04-20 | 崇州天智轻量化制造有限公司 | A kind of magnesium alloy seamless closure frame |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111136434A (en) * | 2019-11-06 | 2020-05-12 | 苏州朗威电子机械股份有限公司 | Method for folding processing plate of server cabinet |
| CN113930699A (en) * | 2021-10-14 | 2022-01-14 | 山东大学 | Processing technology for inhibiting coarse grains of welding seam of magnesium alloy profile |
| CN117845093A (en) * | 2024-03-07 | 2024-04-09 | 太原理工大学 | Preparation method of SiC/AZ91 composite material impregnated by vacuum air pressure |
| CN117845093B (en) * | 2024-03-07 | 2024-05-03 | 太原理工大学 | Preparation method of SiC/AZ91 composite material impregnated by vacuum air pressure |
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