CN104190737A - Amorphous metal extrusion die capable of rapidly replacing die core, and extrusion process thereof - Google Patents
Amorphous metal extrusion die capable of rapidly replacing die core, and extrusion process thereof Download PDFInfo
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- CN104190737A CN104190737A CN201410427429.9A CN201410427429A CN104190737A CN 104190737 A CN104190737 A CN 104190737A CN 201410427429 A CN201410427429 A CN 201410427429A CN 104190737 A CN104190737 A CN 104190737A
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- 239000005300 metallic glass Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000001125 extrusion Methods 0.000 title claims abstract description 25
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 51
- 238000002425 crystallisation Methods 0.000 claims abstract description 13
- 230000008025 crystallization Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000007493 shaping process Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004017 vitrification Methods 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 7
- 238000005267 amalgamation Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010301 surface-oxidation reaction Methods 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 14
- 238000010791 quenching Methods 0.000 description 10
- 230000000171 quenching effect Effects 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000001291 vacuum drying Methods 0.000 description 6
- 239000010949 copper Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
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Abstract
The invention relates to an amorphous metal extrusion die capable of rapidly replacing a die core, and an extrusion process of the amorphous metal extrusion die. The amorphous metal extrusion die comprises a general standard framework and the split type combination die core, wherein the general standard framework comprises an upper die base and a lower die base; guide pillars and guide sleeves, which can move up and down after being matched with each other, are supported between the upper die base and the lower die base; a dowel bar is fixed on the upper die base by a dowel bar fixing plate; the lower end of the dowel bar is provided with a press head; a fixed seat is arranged on the lower die base; an ejector rod communicated with the bottom of the fixed seat is arranged under the lower die base; the split type combination die core is arranged on the fixed seat and is formed by splicing at least two die core blocks; the jointing surface of the die core blocks is arranged along the vertical direction; after the die core blocks are spliced, grooves in the inner surfaces of the die core blocks can form a die core cavity needed by a cylindrical bulge. The amorphous metal extrusion die is capable of rapidly replacing the die core and guaranteeing the formation accuracy and the surface quality of an amorphous alloy part, can prevent surface oxidation of the amorphous alloy part, is high in production efficiency, has energy-saving and consumption-reducing effects and can avoid crystallization of the amorphous alloy part.
Description
Technical field
The present invention relates to amorphous metal glass extrusion forming process and mould, belong to amorphous metal forming technique field.
Background technology
Glassy metal claims again amorphous alloy, due to the unordered microstructure of its uniqueness, makes the advantage of its existing metal and glass, has overcome again their drawbacks separately.Glass breadks easily, does not have ductility; But the intensity of glassy metal is higher than steel, hardness surpasses high hard tool steel, and has certain toughness and rigidity, so people claim that glassy metal is " king of glass " of " strike not broken, pound not rotten ".Amorphous alloy has mechanics, the physics and chemistry performance preferably such as high strength, high rigidity, good wearability and corrosion resistance, thereby determines that the field of its application is very extensive, has broad application prospects.
The zirconium-base amorphous requirement for critical cooling rate is lower, can under the cooling velocity lower than below 100K/s, obtain amorphous microstructure completely, thereby have multiple forming technology for zirconium-base amorphous part.Patent CN 102877010A " a kind of cast form mode of zirconium-based bulk amorphous alloy foundry goods " discloses a kind of cast moulding method of zirconium-based bulk amorphous alloy foundry goods, the at% of the chemical composition of its foundry goods is: Zr 35-45, Ti 11-16, Cu 10-15, Ni 8-12, Be 16-25, before melting, above-mentioned raw material are carried out in alcohol medium purified treatment with ultrasonic wave, each is divided into two parts again, by its density separately, repeating from down to up cloth for twice packs in crucible, during cloth, to avoid raw copper and copper crucible to contact, to prevent that raw copper when fusing and copper crucible from boning, then close stove and vacuumize, be filled with the argon shield of 0.05MPa, start to add hot smelting, power is added to the temperature that 140KW makes alloy melt after 60KW, 80KW, 120KW respectively keep 5 minutes and reach more than 800 ℃.Patent CN101164722A " a kind of non-crystaline amorphous metal workpiece prepare processing net forming integrated method " discloses a kind of processing net forming integrated method of preparing of non-crystaline amorphous metal workpiece.The inventive method is injecting the mould of can bursting after alloy masterbatch heat fused, forming amorphous alloy after molten alloy is cooling, after the routed type of mould, test specimen is carried out to simple cleaning and can obtain required workpiece.Utilization critical thickness that mould prepares any complicated shape by the method for the casting non-crystaline amorphous metal workpiece within the specific limits of can bursting, has realized preparation, the processing of complicated non-crystaline amorphous metal workpiece, net forming integrated technology.Patent CN 1199747C " a kind of precision parts made of non-crystalline alloy superplastic die forging building mortion and method " discloses a kind of device being shaped for bulk amorphous alloys precision parts superplastic die forging and has adopted this device to prepare the technique of bulk amorphous alloys precision component.The various Irregular Shaped Parts of the gabarit that can be shaped diameter dimension 0.1～100mm, gauge 0.1～50mm, as gear class, solid or solid Step Shaft (taper shaft) class and etc. the flat thin part of axle class etc.The device of inventing is comprised of vacuum drying oven, replaceable pressure head and mould three parts.Patent CN 100473472C " manufacturing process of glassy metal " discloses a kind of manufacturing process of glassy metal.The method is keeping amorphous simultaneously shaping of glassy metal not produce the formed products of blemish, the molded component of the shaping high dimensional accuracy of simplifying working process of simply constructed mould has been used in utilization, even if formed products not etc. of thin-walled or thickness or the formed products of complicated shape also can be shaped simply.
Amorphous alloy is after die forming, deposit problem both ways: the one, if the direct ejection system by mould ejects part after being shaped, due to part in shaping afterwards or supercooled liquid, eject part and easily cause damage parts, as: top worn, be out of shape, break etc.; The 2nd, if after being shaped, allow formation of parts in mould along with mould air cooling, cool time that need to be very long, easily cause the part that is shaped partially-crystallized, cannot obtain amorphous alloy part completely, production efficiency is also very low in addition.
Take a broad view of the existing patent achievement about amorphous alloy shaping aspect, have in order to protect amorphous alloy blank and part not oxidized, adopted vacuum drying oven that fixture for forming is wrapped in to inside; What have does not directly take any safeguard procedures.If do not take safeguard procedures, by causing, blank and the piece surface of amorphous alloy are oxidized, affect the appearance quality of part, also can affect the forming accuracy of part.If adopt vacuum drying oven that fixture for forming is wrapped in to inside; mainly have the problem of following several respects: (1) because vacuum drying oven is larger, and part of every shaping will vacuumize, filling protective atmosphere; thereby production efficiency is lower, also larger for the loss of protective atmosphere.(2) in forming process, frock must surpass the vitrification point of amorphous alloy, and will, lower than the crystallization temperature of amorphous alloy, so just can guarantee that amorphous alloy blank could be shaped smoothly; But, by the resistance heated mode of vacuum drying oven, for whole frock, heating, the temperature of frock is wayward.(3) when ejecting part, amorphous alloy blank, after being shaped, still enters subcooled liquid state, and intensity is not high, if directly ejected, will cause the damage of amorphous alloy piece surface.(4) after amorphous alloy part ejects, must take out and cooling fast, otherwise will cause the crystallization of amorphous alloy part, cause forming technology failure.(5) after part is taken out vacuum drying oven, the amorphous alloy part of the condition of high temperature is ingress of air, thereby causes the surface of amorphous alloy part oxidized, has a strong impact on the surface quality of amorphous alloy part.
Summary of the invention
The object of the invention is to overcome prior art deficiency, and a kind of amorphous metal extrusion die and extrusion process of fast changeable core rod are provided.Fast changeable core rod also guarantees forming accuracy and the surface quality of amorphous alloy part, can prevent surface oxidation, has higher production efficiency, avoids the crystallization phenomenon of amorphous alloy part.
The technical scheme that the present invention takes is:
A kind of amorphous metal extrusion die of fast changeable core rod, comprise universal standard framework and split-type combination mold core, universal standard framework comprises upper bolster, die shoe, between upper bolster and die shoe, supporting the guide pillar that can move up and down after coordinating, guide pin bushing, transmission rod is fixed on upper bolster by transmission rod fixed head, the lower end of transmission rod is provided with pressure head, holder is on die shoe, the knock-pin that is provided with below of die shoe communicates with holder bottom, split-type combination mold core is placed on holder, split-type combination mold core is combined into by least two core rod pieces, core rod piece amalgamation face is along vertical direction, after the fluted amalgamation of core rod piece inner surface belt, can form the required mold core cavities of cylindrical bump.
The upper surface of described holder is provided with groove, and the inner surface of groove has the gradient of 3～5 °; Split-type combination mold core bottom is provided with the step with groove fit, the outer surface of step has the gradient of 3～5 °, and the gradient of groove inner surface is identical with the outer surface gradient of core rod step, groove by holder guarantees the quality of fit between each lobe core rod, and each lobe core rod is combined.
Described split-type combination mold core outside is provided with gripping sleeve, prevents that core rod separately.The outer surface of split-type combination mold core has the gradient of 3～5 °, and the inner surface of gripping sleeve also has the gradient of 3～5 °, and both match, and the gradient of core rod is identical with the gradient of gripping sleeve.
Between described upper bolster and transmission rod fixed head, be provided with upper padding plate, between described holder and die shoe, be provided with lower bolster.
Described upper bolster, upper padding plate, transmission rod fixed head are fixed together by pin or screw.Die shoe, lower bolster, holder are fixed together by pin or screw.
During shaping, split-type combination mold core is put into holder, amorphous alloy blank is put into die cavity by the hole in the middle of combined type die cavity, then pressure head is put into the middle hole of combined type die cavity.Adopt inclined-plane to guarantee the assembly precision between split-type combination mold core and holder, by interference fits mode, guarantee the assembly precision between pressure head and combined type die cavity.Technical process mainly comprise split-type combination mold core assembling, heating, be shaped, eject, cooling, open core rod and take out the processes such as part.
In order to guarantee production efficiency, in forming process, need to process 4～5 cover split-type combination mold cores, can ensure so a set of core rod in assembling, a set of core rod is in heating, a set of core rod is being shaped, a set of core rod is cooling, and assurance shaping flow process is carried out smoothly, saves the production time of amorphous alloy part.
An amorphous metal extrusion process for fast changeable core rod, comprises that step is as follows:
(1) in the casing that is connected with protective atmosphere (as: argon gas), assemble split-type combination mold core, and amorphous alloy blank and pressure head are put into core rod hole;
(2) core rod combining being put into the chamber type electric resistance furnace that is connected with protective atmosphere (as: argon gas) heats, the heating-up temperature of chamber type electric resistance furnace need to, between the vitrification point and crystallization temperature of amorphous alloy, generally should be spent higher than vitrification point 15～20; Combination mold core is placed on and in stove, heats 10～30 minutes (heat time wants the diameter of core rod to determine);
(3) core rod after heating is put into gripping sleeve by tool holding, start former, by transmission rod, pressure head is pressed into the depths of core rod, impel the cavity of amorphous alloy blank filling core rod;
(4) after shaping finishes, utilize the ejecting mechanism of former, by knock-pin, combined type mold core is ejected;
(5) with instrument, core rod is clamped in cooling medium (as: quenching oil, quenching liquid, water etc.) cooling;
(6) open core rod and take out part.
The invention has the beneficial effects as follows:
(1) utilize the die cavity of sealing to protect the amorphous alloy part of amorphous alloy blank and shaping, anti-oxidation.
(2) universal standard framework need not heat, and at room temperature operation is energy-saving and cost-reducing.
(3) split-type combination mold core is cooling in cooling medium (as: quenching oil, quenching liquid, water etc.) after ejecting, and improves the cooling velocity of amorphous alloy part, avoids amorphous alloy part to occur crystallization phenomenon.
(4) after shaping finishes, in ejection process, push rod directly acts on holder, and push rod does not contact with amorphous alloy part, can guarantee surface size precision and the surface quality of part;
(5) die joint of split-type combination mold core is along vertical direction, guarantees can take out smoothly part after part forming.
Accompanying drawing explanation
Fig. 1 is the amorphous metal structure of extrusion schematic diagram of fast changeable core rod;
Fig. 2 is the split-type combination mold core explosive view (before shaping) of embodiment 1 multidiameter;
The constitutional diagram of the split-type combination mold core of Fig. 3 embodiment 1 multidiameter;
Schematic internal view after the combination of the split-type combination mold core of Fig. 4 embodiment 1 multidiameter;
Schematic internal view after the shaping of the split-type combination mold core of Fig. 5 embodiment 1 multidiameter;
The explosive view (after shaping) of the split-type combination mold core of Fig. 6 embodiment 1 multidiameter;
Fig. 7 is the explosive view of the split-type combination mold core of embodiment 2 bearing pins;
Fig. 8 is the constitutional diagram of the split-type combination mold core of embodiment 2 three bearing pins;
Fig. 9 is schematic internal view after the combination of split-type combination mold core of embodiment 2 three bearing pins;
Figure 10 is schematic internal view after the shaping of split-type combination mold core of embodiment 2 three bearing pins;
Figure 11 is the explosive view (after shaping) of the split-type combination mold core of embodiment 2 three bearing pins;
Wherein, 1a and 1b, guide pillar, 2, die shoe, 3,, hexagon socket cap head screw, 4, split-type combination mold core, 5, lower bolster, 6, knock-pin, 7, amorphous alloy blank, 8, holder, 9, pin, 10, upper bolster, 11a and 11b, guide pin bushing, 12, upper padding plate, 13, pin, 14, transmission rod fixed head, 15, transmission rod, 16, pressure head, 17, screw, 18, gripping sleeve, the distinguish of 19a and 19b, multidiameter combined type mold core, 20, multidiameter, the distinguish of 21a, 21b and 21c, three bearing pin combined type mold cores, 22, three bearing pins.
The specific embodiment
Below in conjunction with the specific embodiment and embodiment, further illustrate.
A kind of amorphous metal extrusion die of fast changeable core rod, comprise universal standard framework and split-type combination mold core, universal standard framework comprises upper bolster 10, die shoe 2, between upper bolster 10 and die shoe 2, supporting guide pillar 1a and the 1b that after coordinating, can move up and down, guide pin bushing 11a and 11b, transmission rod 15 is by transmission rod fixed head 14, upper padding plate 12 is fixed on upper bolster 10, transmission rod 15 lower ends are provided with pressure head 16, lower bolster 5 is fixed on die shoe 2, holder 8 is on lower bolster 5, holder 5 has knock-pin 6 below, on holder 8, be placed with split-type combination mold core 4, split-type combination mold core 4 is combined into by least two core rod pieces, core rod piece amalgamation face is along vertical direction, after the fluted amalgamation of core rod piece inner surface belt, can form required mold core cavities.
The upper surface of holder 8 is provided with groove, and the inner surface of groove has the gradient of 3～5 °; Split-type combination mold core 4 bottoms are provided with the step with groove fit, the outer surface of step has the gradient of 3～5 °, and the gradient of groove inner surface is identical with the outer surface gradient of core rod step, groove by holder guarantees the quality of fit between each lobe core rod, and each lobe core rod is combined.
The die joint of split-type combination mold core is along vertical direction, guarantees can take out smoothly part after part forming.
Split-type combination mold core 4 outsides are provided with gripping sleeve 18.The outer surface of split-type combination mold core 4 has the gradient of 3～5 °, and the inner surface of gripping sleeve 18 also has the gradient of 3～5 °, and the gradient of core rod is identical with the gradient of gripping sleeve.Like this can be by the gradient of extruding force, core rod and gripping sleeve in extrusion process, guarantee that three lobes can closely fit, guarantee the forming accuracy of part.
After each lobe core rod and holder combination, amorphous alloy blank is put into combined type mold core by core rod hole, then pressure head is put into core rod hole, the size relationship in pressure head and core rod hole is the form of interference fits.Universal standard framework has versatility, as long as the external diameter outside dimension identical, pressure head of split-type combination mold core is greater than the size of transmission rod, and can universal standard framework of several component sharings.
Extrusion process, comprises that step is as follows:
(1) in the casing that is connected with protective atmosphere (as: argon gas), assemble split-type combination mold core, and amorphous alloy blank and pressure head are put into core rod hole;
(2) core rod combining being put into the chamber type electric resistance furnace that is connected with protective atmosphere (as: argon gas) heats, the heating-up temperature of chamber type electric resistance furnace need to, between the vitrification point and crystallization temperature of amorphous alloy, generally should be spent higher than vitrification point 15～20; Combination mold core is placed on and in stove, heats 10～30 minutes (heat time wants the diameter of core rod to determine);
(3) core rod after heating is put into gripping sleeve by tool holding, start former, by transmission rod, pressure head is pressed into the depths of core rod, impel the cavity of amorphous alloy blank filling core rod;
(4) after shaping finishes, utilize the ejecting mechanism of former, by knock-pin, combined type mold core is ejected;
(5) with instrument, core rod is clamped in cooling medium (as: quenching oil, quenching liquid, water etc.) cooling;
(6) open core rod and take out part.
Utilize the die cavity of sealing to protect the amorphous alloy part of amorphous alloy blank and shaping, anti-oxidation.
Universal standard framework need not heat, at room temperature operation.
Cooling in cooling medium (as: quenching oil, quenching liquid, water etc.) after split-type combination mold core ejects, the cooling velocity of raising amorphous alloy part, avoids amorphous alloy part to occur crystallization phenomenon.
Embodiment 1: the split-type combination mold core of multidiameter, as Fig. 2-6, mold core cavities is multidiameter shape.
Amorphous alloy is Zr58.5Cu15.6Ni12.8Al10.3Nb2.8, and vitrification point and crystallization temperature are respectively 385 ℃ and 470 ℃.This amorphous alloy, when heating-up temperature is 405 ℃, can be incubated 30 minutes and there is no crystallization phenomenon, can meet the requirement of technique.In heating process, the heating-up temperature of chamber type electric resistance furnace is arranged on to 403 ℃～407 ℃, the heat time is 20 minutes.Protective atmosphere is argon gas.The material of combined type mold core is H13 hot die steel.Cooling medium is quenching oil.
The split-type combination mold core of 2: three bearing pins of embodiment, as Fig. 7-11, mold core cavities is three bearing pin shapes.
Amorphous alloy is Zr58.5Cu15.6Ni12.8Al10.3Nb2.8, and vitrification point and crystallization temperature are respectively 385 ℃ and 470 ℃.This amorphous alloy, when heating-up temperature is 405 ℃, can be incubated 30 minutes and there is no crystallization phenomenon, can meet the requirement of technique.In heating process, the heating-up temperature of chamber type electric resistance furnace is arranged on to 403 ℃～407 ℃, the heat time is 20 minutes.Protective atmosphere is argon gas.The material of combined type mold core is H13 hot die steel.Cooling medium is quenching oil.
Claims (8)
1. the amorphous metal extrusion die of a fast changeable core rod, it is characterized in that, comprise universal standard framework and split-type combination mold core, universal standard framework comprises upper bolster, die shoe, between upper bolster and die shoe, supporting the guide pillar that can move up and down after coordinating, guide pin bushing, transmission rod is fixed on upper bolster by transmission rod fixed head, the lower end of transmission rod is provided with pressure head, holder is on die shoe, the knock-pin that is provided with below of die shoe communicates with holder bottom, split-type combination mold core is placed on holder, split-type combination mold core is combined into by least two core rod pieces, core rod piece amalgamation face is along vertical direction, after the fluted amalgamation of core rod piece inner surface belt, can form the required mold core cavities of cylindrical bump.
2. the amorphous metal extrusion die of a kind of fast changeable core rod according to claim 1, is characterized in that, the upper surface of described holder is provided with groove, and split-type combination mold core bottom is provided with the step with groove fit.
3. the amorphous metal extrusion die of a kind of fast changeable core rod according to claim 2, is characterized in that, the inner surface of groove has the gradient of 3～5 °; The outer surface of step has the gradient of 3～5 °.
4. the amorphous metal extrusion die of a kind of fast changeable core rod according to claim 1, is characterized in that, described split-type combination mold core outside is provided with gripping sleeve.
5. the amorphous metal extrusion die of a kind of fast changeable core rod according to claim 4, is characterized in that, the outer surface of split-type combination mold core has the gradient of 3～5 °, and the inner surface of gripping sleeve also has the gradient of 3～5 °, and both match.
6. the amorphous metal extrusion die of a kind of fast changeable core rod according to claim 1, is characterized in that, between described upper bolster and transmission rod fixed head, is provided with upper padding plate, between described holder and die shoe, is provided with lower bolster.
7. the amorphous metal extrusion die of a kind of fast changeable core rod according to claim 1, is characterized in that, described upper bolster, upper padding plate, transmission rod fixed head are fixed together by pin or screw; Die shoe, lower bolster, holder are fixed together by pin or screw.
8. utilize the technique that mould carries out amorphous metal extruding described in claim 1-7 any one, it is characterized in that, comprise that step is as follows:
(1) in being connected with the casing of protective atmosphere, assemble split-type combination mold core, and amorphous alloy blank and pressure head are put into core rod hole;
(2) core rod combining is put into the chamber type electric resistance furnace that is connected with protective atmosphere and heated, the heating-up temperature of chamber type electric resistance furnace need to, between the vitrification point and crystallization temperature of amorphous alloy, be placed on combination mold core in stove and heat 10～30 minutes;
(3) core rod after heating is put into gripping sleeve by tool holding, start former, by transmission rod, pressure head is pressed into the depths of core rod, impel the cavity of amorphous alloy blank filling core rod;
(4) after shaping finishes, by knock-pin, combined type mold core is ejected;
(5) with instrument, core rod is clamped in cooling medium cooling;
(6) open core rod and take out part.
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| CN201410427429.9A CN104190737B (en) | 2014-08-27 | 2014-08-27 | A kind of amorphous metal extrusion die of fast changeable core rod and extrusion process |
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| CN201410427429.9A CN104190737B (en) | 2014-08-27 | 2014-08-27 | A kind of amorphous metal extrusion die of fast changeable core rod and extrusion process |
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| CN105215252A (en) * | 2015-10-23 | 2016-01-06 | 北京机电研究所 | The forming technology of the mould of preform 45 ° of skew T jumping-up parts, method and 45 ° of skew Ts |
| CN105252230A (en) * | 2015-12-01 | 2016-01-20 | 河北宏润核装备科技股份有限公司 | Machining process for inclined tee |
| CN112371890A (en) * | 2020-09-30 | 2021-02-19 | 贵州安大航空锻造有限责任公司 | Ti2Fetal membrane forming method for AlNb-based alloy deep-groove special-shaped ring piece |
| CN113579132A (en) * | 2021-07-29 | 2021-11-02 | 武汉理工大学 | Precision rolling die and method for rectangular-section ring part with island bosses |
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