CN102513485A - Two-step heat press-forging molding method of magnesium alloy thin-wall element and molding die - Google Patents
Two-step heat press-forging molding method of magnesium alloy thin-wall element and molding die Download PDFInfo
- Publication number
- CN102513485A CN102513485A CN2011104020195A CN201110402019A CN102513485A CN 102513485 A CN102513485 A CN 102513485A CN 2011104020195 A CN2011104020195 A CN 2011104020195A CN 201110402019 A CN201110402019 A CN 201110402019A CN 102513485 A CN102513485 A CN 102513485A
- Authority
- CN
- China
- Prior art keywords
- forging
- punch
- mould
- die
- alloy thin
- 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.)
- Granted
Links
Images
Abstract
The invention relates to the forging processing technology of magnesium alloy, in particular to a two-step heat press-forging molding method of magnesium alloy thin-wall elements (such as notebook case) having complex profile structures (such as bolts, reinforcement ribs, buckles, hinge flanges and the like) and a special die for the method. The predetermined magnesium alloy thin-wall case semi-finished product is formed after being primarily forged into a locally complex structure focus material by the two-step heat press-forging, and finally the magnesium alloy thin-wall case is formed by forging. The two-step heat press-forging molding die of magnesium alloy thin-wall element comprises a primary forging die and a final forging die for the two-step heat press-forging. The method of the invention can be used to prepare magnesium alloy notebook case with complex structures such as bolts, reinforcement ribs, buckles and hinge flanges, wherein in comparison with the one-step direct press-forging process, the forging pressure is decreased, the tonnage demand of the apparatus is reduced, the service life of the die is prolonged, the problem of enormous pressure in forging molding of the magnesium alloy notebook case is solved, and the consequent problem caused by the enormous pressure is solved simultaneously.
Description
Technical field
The present invention relates to the forging process technology of magnesium alloy, refer to a kind of two step Hot press-forging formation method and particular manufacturing crafts thereof especially with complicated appearance structure (as: screw column, reinforcement, buckle, hinged flange etc.) Mg alloy thin wall spare (as: notebook computer shell etc.).
Background technology
Continuous development along with notebook; The sheathing material of notebook also demonstrates the trend of diversification more; Rough surface plastic casing from the beginning, ganoid till now metal shell, the effect of notebook computer shell mainly shows " protection, heat radiation, attractive in appearance " these three aspects.Therefore, notebook computer shell material requirements intensity high, heat-resisting, have characteristics such as electromagnetic wave shielding, dimensionally stable and aesthetic appearance are good.And magnesium alloy case possesses above nearly all advantage, is the best optional material of notebook computer shell.
At present; The main method of preparation magnesium alloy notebook computer shell has punching press welding forming and two kinds of methods of casting forming; Because the defective of magnesium alloy self performance; Cause these two kinds of methods also existing huge problem, this point restricting the relatively development of this shell of magnesium alloy aspect technology and the product quality.In recent years, along with the maturation and the development of sheet material press forging and forming technology, some researchers with this technical application in the manufacturing field of notebook computer shell.Yet; The all insoluble problem that in the magnesium alloy press forging and forming, has also run into, as press forging and forming pressure is big, magnesium alloy metal flow property is poor, the complexity of local projection is shaped difficulty, and because impact forging pressure is big; Press forging and forming spare is fitted closely with mould; Cause the pickup difficulty, because pressure is huge, the design of counterdie ejecting mechanism has also received great restriction.
Summary of the invention
Main purpose of the present invention provides a kind of Mg alloy thin wall spare (as: notebook computer shell etc.) two step Hot press-forging formation method and particular manufacturing crafts thereof; Solved magnesium alloy notebook computer shell press forging and forming problem of big pressure; Solve simultaneously because the contingency question that immense pressure is brought; And two step impact forging method formabilities are good, and surface quality is high, open the beginning of the magnesium alloy notebook press forging and forming marketization.
Technical scheme of the present invention is:
A kind of Mg alloy thin wall spare two step Hot press-forging formation methods; Adopt two step press forging and formings, preliminary impact forging is local labyrinth aggregate material, forms predetermined Mg alloy thin wall spare shell semi-finished product; Final impact forging forms Mg alloy thin wall spare shell, includes the following step:
1) blanking: the magnesium alloy plate of preparation required size;
2) heating blank: heating blank to 350～400 ℃, be 3～10 minutes heat time heating time;
3) heating mould: protruding, die to mould heat, and make mold temperature maintain 300～350 ℃, and at this moment, protruding, die is in closure state;
4) preliminary press forging and forming: use forging mould just, blank and mould are evenly smeared lubricant, and blank is put into counterdie rapidly, and patrix is descending fast, and first passage preform is local labyrinth aggregate material, form predetermined Mg alloy thin wall spare semi-finished product;
5) final press forging and forming: repeat 2), 3) after the step, use the finish-forging mould, blank and mould are evenly smeared lubricant, blank is put into mould, press forging and forming Mg alloy thin wall spare shell;
6) deburring, surface treatment: the unnecessary leftover pieces of excision drip molding, remove residual greasy dirt, adopt differential arc oxidation that press forging and forming spare is carried out surface treatment.
Described Mg alloy thin wall spare two step Hot press-forging formation methods, magnesium alloy plate is milled sheet or stripper plate, and its thickness is 2～3mm, and surface roughness is not less than the Ra0.4 micron.
Described Mg alloy thin wall spare two step Hot press-forging formation methods, local labyrinth is screw column, reinforcement, buckle, hinged flange.
Described Mg alloy thin wall spare two step Hot press-forging formation methods, lubricant is the molybdenum bisuphide lithium saponify.
The special forming mould tool of described magnesium alloy notebook computer shell two step Hot press-forging formation methods, Mg alloy thin wall spare two step Hot press-forging formation moulds are respectively the first forging mould and the finish-forging mould of two step Hot press-forging formations;
Just forging mould is provided with lower bolster, punch overcoat, punch, convex mould pad, die, die block, cope match-plate pattern; Wherein: die is fixed in cope match-plate pattern through die block; Punch places the punch overcoat, and punch and punch overcoat are positioned over convex mould pad, and overall fixed is in lower bolster;
The finish-forging mould is provided with lower bolster, convex mould pad, ejector spring, punch overcoat, punch, punch core rod, die, die block, cope match-plate pattern; Wherein: die is fixed in cope match-plate pattern through die block; Punch and punch core rod place in the punch overcoat; The punch core rod is arranged at the punch center, and punch overcoat, punch, punch core rod bottom are lined with convex mould pad, the convex mould pad center drilling; Ejector spring is housed in punch core rod bottom in the said hole, the overall fixed that punch core rod, punch overcoat, punch, convex mould pad are formed is on lower bolster.
Described Mg alloy thin wall spare two step Hot press-forging formation moulds, first forging mould and finish-forging mould two molds all adopt die last, punch under inverted structure.
Described Mg alloy thin wall spare two step Hot press-forging formation moulds; Die and punch are oppositely arranged up and down; Die block is located, is connected through bolt through alignment pin respectively with cope match-plate pattern, and lower bolster, convex mould pad and punch overcoat are located, are connected through bolt through alignment pin respectively, in the through hole of cope match-plate pattern guide pin bushing are housed; In the through hole of lower bolster guide pillar is housed, guide pillar is slidingly matched with guide pin bushing through putting in the guide pin bushing.
Described Mg alloy thin wall spare two step Hot press-forging formation moulds; Die and punch are oppositely arranged up and down; Die block is located, is connected through bolt through alignment pin respectively with cope match-plate pattern, and lower bolster, convex mould pad and punch overcoat are located, are connected through bolt through alignment pin respectively, in the through hole of cope match-plate pattern guide pin bushing are housed; In the through hole of lower bolster guide pillar is housed, guide pillar is slidingly matched with guide pin bushing through putting in the guide pin bushing.
Described Mg alloy thin wall spare two step Hot press-forging formation moulds, the lateral surface of punch core rod is a cone structure, makes between punch core rod and the punch and leaves the gap, through ejector spring the punch core rod is ejected smoothly.
Described Mg alloy thin wall spare two step Hot press-forging formation moulds, the cope match-plate pattern of first forging mould and finish-forging mould, lower bolster respectively are provided with row's bottoming hole.
Major advantage of the present invention:
1. the present invention adopts two step press forging and forming methods, and preliminary impact forging is local labyrinth aggregate material, forms predetermined notebook computer shell semi-finished product; Final impact forging forms notebook computer shell; This technology has reduced press forging and forming pressure greatly, forms good fluidity, and products surface quality is high.
2. mould of the present invention adopt die last punch under inverted structure, this kind structure is upwards slightly lifted through frictional force drive press forging and forming spare when impact forging finishes die and lifts, and makes press forging and forming spare partly break away from punch, is convenient to take out press forging and forming spare.
3. the present invention is provided with ejector spring, and when the descending end of patrix impact forging was return, ejector spring ejected punch core rod and press forging and forming spare automatically simultaneously, and pickup is convenient, is prone to realize automation.
4. the present invention is provided with bottoming hole on bolster, and it can improve the efficiency of heating surface of mould, also can improve the heats of patrix simultaneously, and this point has solved the difficult problem of patrix heating in the past.
In a word; The present invention proposes to adopt two step press forging and forming methods; Passage impact forging just forms protruding aggregate material at the sheet material outer shroud, and the protruding impact forging of outer shroud that a time formed before finish-forging was shaped and utilizes forms the local crowning labyrinth, finally obtains magnesium alloy notebook computer shell press forging and forming spare.This process has solved the big problem of magnesium alloy press forging and forming pressure, and formability is good, and surface quality is high, is prone to realize automatic continuous production, for this shell of magnesium alloy comparison press forging and forming has been opened unlimited vast market.
Description of drawings
The first forging mould structure chart of magnesium alloy notebook computer shell two step Hot press-forging formations that Fig. 1 adopts for the present invention.
The magnesium alloy notebook computer shell two step Hot press-forging formation finish-forging die structure dwgs that Fig. 2 adopts for the present invention.
The magnesium alloy notebook computer shell part example of Fig. 3 for adopting the hot impact forging of two steps to produce.
Among the figure, 1 lower bolster; 2,8 alignment pins; 3 convex mould pads; 4 punch overcoats; 5 punch; 6 dies; 7 guide pin bushings; 9 die blocks; 10 cope match-plate patterns; 11,13 bolts; 12 guide pillars; 14 bottoming holes; 15 lower bolsters; 16,24 alignment pins; 17 convex mould pads; 18 ejector springs; 19 punch overcoats; 20 punch; 21 punch core rods; 22 dies; 23 guide pin bushings; 25 die blocks; 26 cope match-plate patterns; 27,29 bolts; 28 guide pillars; 30 bottoming holes; 31 hot stamp works; 32 buckles; 33 reinforcements; 34 screw columns; 35 hinged flanges.
The specific embodiment
Below in conjunction with accompanying drawing and practical implementation the present invention is further described.
Shown in Fig. 1-2, Mg alloy thin wall spare two step Hot press-forging formation moulds are respectively the first forging mould and the finish-forging mould of two step Hot press-forging formations, and concrete structure is following:
As shown in Figure 1; Just forging mould mainly comprises: lower bolster 1, alignment pin 2, punch overcoat 4, punch 5, die 6, guide pin bushing 7, die block 9, cope match-plate pattern 10, bolt 11,13, guide pillar 12; Wherein: die 6 is fixed on the cope match-plate pattern 10 by die block 9; Punch 5 is placed in the punch overcoat 4, and punch 5 is positioned on the convex mould pad 2 with punch overcoat 4, and overall fixed is on lower bolster 1;
Die 6 is oppositely arranged up and down with punch 5; Die block 9 is located, is connected through bolt 11 through alignment pin 8 respectively with cope match-plate pattern 10; Lower bolster 1, convex mould pad 3 and punch overcoat 4 are located, are connected through bolt 13 through alignment pin 2 respectively; Guide pin bushing 7 is housed in the through hole of cope match-plate pattern 10, guide pillar 12 is housed in the through hole of lower bolster 1, guide pillar 12 is slidingly matched with guide pin bushing 7 through putting in the guide pin bushing 7.
As shown in Figure 2; The finish-forging mould mainly comprises: lower bolster 15, alignment pin 16,24, convex mould pad 17, ejector spring 18, punch overcoat 19, punch 20, punch core rod 21, die 22, guide pin bushing 23, die block 25, cope match-plate pattern 26, bolt 27,29, guide pillar 28; Wherein: die 22 is fixed on the cope match-plate pattern 26 by die block 25; Punch 20 is placed in the punch overcoat 19 with punch core rod 21, and punch core rod 21 is arranged at punch 20 centers, and punch core rod 21 can move up and down along punch 20 inwalls; Punch overcoat 19, punch 20, punch core rod 21 bottoms are lined with convex mould pad 17; Convex mould pad 17 center drillings are equipped with ejector spring 18 in punch core rod 21 bottoms in the said hole, the overall fixed that punch core rod 21, punch overcoat 19, punch 20, convex mould pad 17 are formed is on lower bolster 15; And punch core rod 21 can move freely about in the of 18 with ejector spring, under no pressure, presents the state of ejecting.
Die 22 is oppositely arranged up and down with punch 20; Die block 25 is located, is connected through bolt 27 through alignment pin 24 respectively with cope match-plate pattern 26; Lower bolster 15, convex mould pad 17 and punch overcoat 19 are located, are connected through bolt 29 through alignment pin 16 respectively; Guide pin bushing 23 is housed in the through hole of cope match-plate pattern 26, guide pillar 28 is housed in the through hole of lower bolster 15, guide pillar 28 is slidingly matched with guide pin bushing 23 through putting in the guide pin bushing 23.
In addition, the lateral surface of punch core rod 21 is a cone structure, makes between punch core rod 21 and the punch 20 and leaves the gap, is convenient to through ejector spring 18 punch core rod 21 ejected smoothly.
Among the present invention; The key character of mould is: first forging mould and finish-forging mould two molds all adopt die last, punch under inverted structure; When this kind structure is lifted at impact forging end die; Drive press forging and forming spare through frictional force and upwards slightly lift, make press forging and forming spare partly break away from punch, be convenient to take out press forging and forming spare; Punch core rod and ejector spring can move freely up and down, and when the descending end of patrix impact forging was return, ejector spring ejected the punch core rod automatically, ejects press forging and forming spare simultaneously, and pickup is convenient, are prone to realize automation; Upper and lower template respectively is provided with row's bottoming hole 14,30, can place electrical bar in the bottoming hole 14,30, and the efficiency of heating surface that bottoming hole 14,30 can improve mould is set on bolster, also can improve the heats of patrix simultaneously.
Mg alloy thin wall spare two step Hot press-forging formation methods of the present invention include the following step:
1) blanking: the magnesium alloy plate of preparation required size;
2) heating blank: heating blank to 350～400 ℃ are incubated 3～10 minutes;
3) heating mould: protruding, die to mould heat, and make mold temperature maintain 300～350 ℃, and at this moment, protruding, die is in closure state;
4) preliminary press forging and forming: use forging mould just; Blank and mould are evenly smeared lubricant; And blank put into counterdie rapidly, patrix is descending fast, first passage preform; Be local labyrinth aggregate material such as screw column, reinforcement, buckle, hinged flange, form predetermined Mg alloy thin wall spare semi-finished product;
5) final press forging and forming: repeat 2), 3) after the step, use the finish-forging mould, blank and mould are evenly smeared lubricant, blank is put into mould, press forging and forming Mg alloy thin wall spare shell;
6) deburring, surface treatment: the unnecessary leftover pieces of excision drip molding, remove residual greasy dirt, adopt differential arc oxidation that press forging and forming spare is carried out surface treatment.
Among the present invention, lubricant is the molybdenum bisuphide lithium saponify, and this kind lubricant has outstanding wear resistance and mechanical stability, can reduce the wearing and tearing of mould under High Voltage and high impact loads; This kind lubricates under the high and low temperature environment highly stable, is particularly suitable for long high-temperature operation and uses.
Among the present invention, magnesium alloy plate is milled sheet or stripper plate, and its thickness is 2～3mm, and surface roughness is not less than the Ra0.4 micron.And magnesium alloy plate should be controlled in 10 minutes heat time heating time; Adopt two step press forging and formings, preliminary impact forging is local labyrinth aggregate material, forms predetermined Mg alloy thin wall spare shell semi-finished product, and final impact forging forms Mg alloy thin wall spare shell.
As shown in Figure 3; Have a hinged flange 35, three screw columns 34, three buckles 32, two reinforcements 33 in the hot stamp work 31; Difficult point is: the hinged flange 35 of shaping U type, forming screw post 34 and buckle 32; Four corners of hot stamp work 31 housings are difficult to be shaped, and whole wall thickness is controlled in the 1mm.
Embodiment 1
Adopt two step press forging and formings, preliminary impact forging is local labyrinth aggregate material, forms predetermined notebook computer shell semi-finished product, and final impact forging forms notebook computer shell.In the present embodiment, magnesium alloy (AZ31) thin-wall part two step Hot press-forging formation methods include the following step:
Adopt the line cutting stock to obtain one of 235mm * 180mm magnesium alloy plate, its thickness is 2～3mm, and blank is surperficial with the 1000# sand papering; Make 0.32 micron of surface roughness Ra; Wipe surperficial magnesium and cut, put into chamber type electric resistance furnace then and be heated to 380 ℃, temperature retention time 8 minutes; Avoid the magnesium alloy grain growth, cause its impact forging performance to descend.
At first use forging mould just, with mold heated to 320 ℃, this moment, protruding, die was in closure state; When blank is incubated the enough time when (8 minutes), take out blank rapidly and smear lubricant, put into punch then fast; Simultaneously mould is smeared lubricant, lubricant is the molybdenum bisuphide lithium saponify.
Die begins descending rapidly, and speed is 5mm/s, when die touches the blank upper surface; The pressure fast rise, and the die downstream rate descends rapidly, (Bottom Runby behind the die contact blank is the impact forging degree of depth when reaching the predetermined impact forging degree of depth; The impact forging degree of depth=sheet material original depth-sheet material final thickness) after, stops descendingly, be local labyrinth aggregate material such as screw column, reinforcement, buckle, hinged flange; Passage performing member is just taken out in the backhaul of unloading pressure die.
The heating performing member uses the finish-forging mould then, equally with mold heated to 320 ℃, when performing member is incubated the enough time when (8 minutes), takes out performing member and smears lubricant, simultaneously mould is smeared lubricant, and lubricant is the molybdenum bisuphide lithium saponify; Begin press forging and forming then, die is descending, when reaching the predetermined impact forging degree of depth, stop descending, the backhaul of unloading pressure die, ejector spring ejects the punch core rod, ejects press forging and forming spare simultaneously.As shown in Figure 3, adopt the hot impact forging of two steps to produce the magnesium alloy notebook computer shell of wall thickness 0.8mm.
Embodiment 2
Adopt two step press forging and formings, preliminary impact forging is local labyrinth aggregate material, forms predetermined notebook computer shell semi-finished product, and final impact forging forms notebook computer shell.In the present embodiment, magnesium alloy (AZ31) thin-wall part two step Hot press-forging formation methods include the following step:
Adopt the line cutting stock to obtain one of 235mm * 180mm magnesium alloy plate, its thickness is 2～3mm, and blank is surperficial with the 1000# sand papering; Make 0.32 micron of surface roughness Ra; Wipe surperficial magnesium and cut, put into chamber type electric resistance furnace then and be heated to 350 ℃, temperature retention time 10 minutes; Avoid the magnesium alloy grain growth, cause its impact forging performance to descend.
At first use forging mould just; With mold heated to 300 ℃, this moment, protruding, die was in closure state, when blank is incubated the enough time when (10 minutes); Take out blank rapidly and smear lubricant; Put into punch then fast, simultaneously mould is smeared lubricant, lubricant is the molybdenum bisuphide lithium saponify.
Die begins descending rapidly, and speed is 4mm/s, when die touches the blank upper surface; The pressure fast rise, and the die downstream rate descends rapidly, (Bottom Runby behind the die contact blank is the impact forging degree of depth when reaching the predetermined impact forging degree of depth; The impact forging degree of depth=sheet material original depth-sheet material final thickness) after, stops descendingly, be local labyrinth aggregate material such as screw column, reinforcement, buckle, hinged flange; Passage performing member is just taken out in the backhaul of unloading pressure die.
The heating performing member uses the finish-forging mould then, equally with mold heated to 300 ℃, when performing member is incubated the enough time when (10 minutes), takes out performing member and smears lubricant, simultaneously mould is smeared lubricant, and lubricant is the molybdenum bisuphide lithium saponify; Begin press forging and forming then, die is descending, when reaching the predetermined impact forging degree of depth, stop descending, the backhaul of unloading pressure die, ejector spring ejects the punch core rod, ejects press forging and forming spare simultaneously.As shown in Figure 3, adopt the hot impact forging of two steps to produce the magnesium alloy notebook computer shell of wall thickness 0.9mm.
Embodiment 3
Adopt two step press forging and formings, preliminary impact forging is local labyrinth aggregate material, forms predetermined notebook computer shell semi-finished product, and final impact forging forms notebook computer shell.In the present embodiment, magnesium alloy (AZ31) thin-wall part two step Hot press-forging formation methods include the following step:
Adopt the line cutting stock to obtain one of 235mm * 180mm magnesium alloy plate, its thickness is 2～3mm, and blank is surperficial with the 1000# sand papering; Make 0.32 micron of surface roughness Ra; Wipe surperficial magnesium and cut, put into chamber type electric resistance furnace then and be heated to 400 ℃, temperature retention time 5 minutes; Avoid the magnesium alloy grain growth, cause its impact forging performance to descend.
At first use forging mould just, with mold heated to 350 ℃, this moment, protruding, die was in closure state; When blank is incubated the enough time when (5 minutes), take out blank rapidly and smear lubricant, put into punch then fast; Simultaneously mould is smeared lubricant, lubricant is the molybdenum bisuphide lithium saponify.
Die begins descending rapidly, and speed is 8mm/s, when die touches the blank upper surface; The pressure fast rise, and the die downstream rate descends rapidly, (Bottom Runby behind the die contact blank is the impact forging degree of depth when reaching the predetermined impact forging degree of depth; The impact forging degree of depth=sheet material original depth-sheet material final thickness) after, stops descendingly, be local labyrinth aggregate material such as screw column, reinforcement, buckle, hinged flange; Passage performing member is just taken out in the backhaul of unloading pressure die.
The heating performing member uses the finish-forging mould then, equally with mold heated to 350 ℃, when performing member is incubated the enough time when (5 minutes), takes out performing member and smears lubricant, simultaneously mould is smeared lubricant, and lubricant is the molybdenum bisuphide lithium saponify; Begin press forging and forming then, die is descending, when reaching the predetermined impact forging degree of depth, stop descending, the backhaul of unloading pressure die, ejector spring ejects the punch core rod, ejects press forging and forming spare simultaneously.As shown in Figure 3, adopt the hot impact forging of two steps to produce the magnesium alloy notebook computer shell of wall thickness 0.6mm.
Embodiment result shows; The present invention can prepare the magnesium alloy notebook computer shell that has like labyrinths such as screw column, reinforcement, buckle, hinged flanges; Adopt preliminary impact forging and final impact forging two steps to prepare the shaping notebook computer shell, compare direct press forging and forming of a step, reduced impact forging pressure greatly; Reduce the requirement of equipment tonnage, improved die life simultaneously.The finish-forging mould of the present invention's design utilizes spring mechanism can boost counterdie automatically, and pickup is convenient, easily is automated operation.
Claims (10)
1. Mg alloy thin wall spare two step Hot press-forging formation methods is characterized in that, adopt two step press forging and formings; Preliminary impact forging is local labyrinth aggregate material; Form predetermined Mg alloy thin wall spare shell semi-finished product, final impact forging forms Mg alloy thin wall spare shell, includes the following step:
1) blanking: the magnesium alloy plate of preparation required size;
2) heating blank: heating blank to 350～400 ℃, be 3～10 minutes heat time heating time;
3) heating mould: protruding, die to mould heat, and make mold temperature maintain 300～350 ℃, and at this moment, protruding, die is in closure state;
4) preliminary press forging and forming: use forging mould just, blank and mould are evenly smeared lubricant, and blank is put into counterdie rapidly, and patrix is descending fast, and first passage preform is local labyrinth aggregate material, form predetermined Mg alloy thin wall spare semi-finished product;
5) final press forging and forming: repeat 2), 3) after the step, use the finish-forging mould, blank and mould are evenly smeared lubricant, blank is put into mould, press forging and forming Mg alloy thin wall spare shell;
6) deburring, surface treatment: the unnecessary leftover pieces of excision drip molding, remove residual greasy dirt, adopt differential arc oxidation that press forging and forming spare is carried out surface treatment.
2. according to the described Mg alloy thin wall spare two step Hot press-forging formation methods of claim 1, it is characterized in that magnesium alloy plate is milled sheet or stripper plate, its thickness is 2～3mm, and surface roughness is not less than the Ra0.4 micron.
3. according to the described Mg alloy thin wall spare two step Hot press-forging formation methods of claim 1, it is characterized in that local labyrinth is screw column, reinforcement, buckle, hinged flange.
4. according to the described Mg alloy thin wall spare two step Hot press-forging formation methods of claim 1, it is characterized in that lubricant is the molybdenum bisuphide lithium saponify.
5. the special forming mould tool of the described magnesium alloy notebook computer shell two step Hot press-forging formation methods of claim 1, it is characterized in that: Mg alloy thin wall spare two step Hot press-forging formation moulds are respectively the first forging mould and the finish-forging mould of two step Hot press-forging formations;
Just forging mould is provided with lower bolster, punch overcoat, punch, convex mould pad, die, die block, cope match-plate pattern; Wherein: die is fixed in cope match-plate pattern through die block; Punch places the punch overcoat, and punch and punch overcoat are positioned over convex mould pad, and overall fixed is in lower bolster;
The finish-forging mould is provided with lower bolster, convex mould pad, ejector spring, punch overcoat, punch, punch core rod, die, die block, cope match-plate pattern; Wherein: die is fixed in cope match-plate pattern through die block; Punch and punch core rod place in the punch overcoat; The punch core rod is arranged at the punch center, and punch overcoat, punch, punch core rod bottom are lined with convex mould pad, the convex mould pad center drilling; Ejector spring is housed in punch core rod bottom in the said hole, the overall fixed that punch core rod, punch overcoat, punch, convex mould pad are formed is on lower bolster.
6. according to the described Mg alloy thin wall spare two step Hot press-forging formation moulds of claim 5, it is characterized in that: first forging mould and finish-forging mould two molds all adopt die last, punch under inverted structure.
7. according to the described Mg alloy thin wall spare two step Hot press-forging formation moulds of claim 5; It is characterized in that: die and punch are oppositely arranged up and down; Die block is located, is connected through bolt through alignment pin respectively with cope match-plate pattern, and lower bolster, convex mould pad and punch overcoat are located, are connected through bolt through alignment pin respectively, in the through hole of cope match-plate pattern guide pin bushing are housed; In the through hole of lower bolster guide pillar is housed, guide pillar is slidingly matched with guide pin bushing through putting in the guide pin bushing.
8. according to the described Mg alloy thin wall spare two step Hot press-forging formation moulds of claim 5; It is characterized in that: die and punch are oppositely arranged up and down; Die block is located, is connected through bolt through alignment pin respectively with cope match-plate pattern, and lower bolster, convex mould pad and punch overcoat are located, are connected through bolt through alignment pin respectively, in the through hole of cope match-plate pattern guide pin bushing are housed; In the through hole of lower bolster guide pillar is housed, guide pillar is slidingly matched with guide pin bushing through putting in the guide pin bushing.
9. according to the described Mg alloy thin wall spare two step Hot press-forging formation moulds of claim 5, it is characterized in that: the lateral surface of punch core rod is a cone structure, makes between punch core rod and the punch and leaves the gap, through ejector spring the punch core rod is ejected smoothly.
10. according to the described Mg alloy thin wall spare two step Hot press-forging formation moulds of claim 5, it is characterized in that: the cope match-plate pattern of first forging mould and finish-forging mould, lower bolster respectively are provided with row's bottoming hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110402019.5A CN102513485B (en) | 2011-12-06 | 2011-12-06 | Two-step heat press-forging molding method of magnesium alloy thin-wall element and molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110402019.5A CN102513485B (en) | 2011-12-06 | 2011-12-06 | Two-step heat press-forging molding method of magnesium alloy thin-wall element and molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102513485A true CN102513485A (en) | 2012-06-27 |
| CN102513485B CN102513485B (en) | 2014-03-26 |
Family
ID=46284695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110402019.5A Active CN102513485B (en) | 2011-12-06 | 2011-12-06 | Two-step heat press-forging molding method of magnesium alloy thin-wall element and molding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102513485B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736888A (en) * | 2014-01-15 | 2014-04-23 | 重庆大学 | Forging forming method for magnesium alloy rings |
| CN103752746A (en) * | 2013-12-20 | 2014-04-30 | 鞍钢股份有限公司 | Manufacturing method of pressure head used on thermal force simulation testing machine |
| CN103894530A (en) * | 2012-12-27 | 2014-07-02 | 洪国珍 | Metal part warm forging control method and die system thereof |
| CN107838351A (en) * | 2017-10-26 | 2018-03-27 | 杨晓艳 | The processing molding method and purposes of a kind of magnesium alloy sheet |
| CN108723277A (en) * | 2018-08-24 | 2018-11-02 | 阜阳裕晟电子科技有限公司 | A kind of automotive hub outer ring forging precise forming mold |
| CN110743996A (en) * | 2019-11-08 | 2020-02-04 | 中国兵器工业第五九研究所 | Forming method of high-strength corrosion-resistant magnesium alloy |
| CN112916777A (en) * | 2020-12-28 | 2021-06-08 | 东北轻合金有限责任公司 | Manufacturing method of high-formability magnesium alloy forging for spaceflight |
| CN116197283A (en) * | 2023-04-28 | 2023-06-02 | 佛山高谱机械科技有限公司 | Titanium alloy pipe thermal bending method based on self-lubricating effect |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001162346A (en) * | 1998-12-28 | 2001-06-19 | Tokyo Seitankosho:Kk | Manufacturing method of magnesium alloy thin formed body, and thin formed body |
| JP2001170734A (en) * | 1998-12-28 | 2001-06-26 | Tokyo Seitankosho:Kk | Magnesium alloy thin formed body and its manufacturing method |
| JP2001170735A (en) * | 1999-10-08 | 2001-06-26 | Tokyo Seitankosho:Kk | Method for manufacturing magnesium alloy thin formed body and thin formed body |
| CN1345641A (en) * | 2000-09-22 | 2002-04-24 | 江兴锻压工业股份有限公司 | Magnesium alloy forging formation technology |
| CN1903473A (en) * | 2005-07-29 | 2007-01-31 | 中国科学院金属研究所 | Mild hot formation method for making magnesium alloy shell of cell phone and mould specially for the same |
| 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 |
| CN101850396A (en) * | 2009-04-01 | 2010-10-06 | 中国科学院金属研究所 | Two-stage press forging and forming method of metal thin shell piece with inward convex micro-structure |
-
2011
- 2011-12-06 CN CN201110402019.5A patent/CN102513485B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001162346A (en) * | 1998-12-28 | 2001-06-19 | Tokyo Seitankosho:Kk | Manufacturing method of magnesium alloy thin formed body, and thin formed body |
| JP2001170734A (en) * | 1998-12-28 | 2001-06-26 | Tokyo Seitankosho:Kk | Magnesium alloy thin formed body and its manufacturing method |
| JP2001170735A (en) * | 1999-10-08 | 2001-06-26 | Tokyo Seitankosho:Kk | Method for manufacturing magnesium alloy thin formed body and thin formed body |
| CN1345641A (en) * | 2000-09-22 | 2002-04-24 | 江兴锻压工业股份有限公司 | Magnesium alloy forging formation technology |
| 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 |
| CN1903473A (en) * | 2005-07-29 | 2007-01-31 | 中国科学院金属研究所 | Mild hot formation method for making magnesium alloy shell of cell phone and mould specially for the same |
| CN101850396A (en) * | 2009-04-01 | 2010-10-06 | 中国科学院金属研究所 | Two-stage press forging and forming method of metal thin shell piece with inward convex micro-structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894530A (en) * | 2012-12-27 | 2014-07-02 | 洪国珍 | Metal part warm forging control method and die system thereof |
| CN103752746A (en) * | 2013-12-20 | 2014-04-30 | 鞍钢股份有限公司 | Manufacturing method of pressure head used on thermal force simulation testing machine |
| CN103752746B (en) * | 2013-12-20 | 2015-07-08 | 鞍钢股份有限公司 | Manufacturing method of pressure head used on thermal force simulation testing machine |
| CN103736888A (en) * | 2014-01-15 | 2014-04-23 | 重庆大学 | Forging forming method for magnesium alloy rings |
| CN107838351A (en) * | 2017-10-26 | 2018-03-27 | 杨晓艳 | The processing molding method and purposes of a kind of magnesium alloy sheet |
| CN108723277A (en) * | 2018-08-24 | 2018-11-02 | 阜阳裕晟电子科技有限公司 | A kind of automotive hub outer ring forging precise forming mold |
| CN110743996A (en) * | 2019-11-08 | 2020-02-04 | 中国兵器工业第五九研究所 | Forming method of high-strength corrosion-resistant magnesium alloy |
| CN112916777A (en) * | 2020-12-28 | 2021-06-08 | 东北轻合金有限责任公司 | Manufacturing method of high-formability magnesium alloy forging for spaceflight |
| CN116197283A (en) * | 2023-04-28 | 2023-06-02 | 佛山高谱机械科技有限公司 | Titanium alloy pipe thermal bending method based on self-lubricating effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102513485B (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102513485B (en) | Two-step heat press-forging molding method of magnesium alloy thin-wall element and molding die | |
| CN102513445B (en) | Trimming and flanging composite stamping die | |
| CN101474655B (en) | Brake forming mold for door casing of refrigerator | |
| CN100391647C (en) | Hot press-forging formation method for magnesium alloy thin shells, and special mould therefor | |
| CN203887063U (en) | Forming, trimming and flanging combined die structure | |
| CN102699094B (en) | Die used in extrusion moulding of high-precision complex copper alloy thrust bearing seat | |
| CN204621054U (en) | New energy car battery casing punching block low pressure casting die | |
| TWI485265B (en) | Forging method for aluminum or aluminum alloy | |
| CN101817029A (en) | Cold extrusion die of hexagon nut | |
| CN204449176U (en) | A kind of block forging mould for cross axle Warm Extrusion | |
| CN201613310U (en) | Mechanism for removing scrap at special part of vehicle covering component | |
| CN202701125U (en) | Precision stamping forming die | |
| CN105081280B (en) | A kind of bullet train cast aluminium gear-box lower box metal-mold low-pressure casting mould | |
| CN202052855U (en) | Stamping die with adjusting mechanism | |
| CN205798168U (en) | For processing the bending die of Z-shaped support | |
| CN201353616Y (en) | Thermoforming, punching and trimming integrated die of high-strength steel elements | |
| CN206614024U (en) | A kind of magnesium alloy hub liquid forging mould | |
| CN204320936U (en) | A kind of cupping tool | |
| CN203695751U (en) | Composite die for stamping and edge cutting of U-shaped automobile control arm forge piece | |
| CN107552647A (en) | A kind of part swaging device | |
| CN113857404A (en) | Method for forging hinge beam in short process | |
| CN201625678U (en) | Cold extruding die for hexagon nut | |
| CN203390061U (en) | Low-melting-point alloy mold applicable to punching | |
| CN102896374A (en) | Process for manufacturing diamond saw blade | |
| CN202021222U (en) | Motor casing processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |