WO2016208825A1 - Procédé de formation de produit amorphe et procédé d'amélioration des défauts de surface d'un matériau moulé sous pression amorphe - Google Patents

Procédé de formation de produit amorphe et procédé d'amélioration des défauts de surface d'un matériau moulé sous pression amorphe Download PDF

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Publication number
WO2016208825A1
WO2016208825A1 PCT/KR2015/012823 KR2015012823W WO2016208825A1 WO 2016208825 A1 WO2016208825 A1 WO 2016208825A1 KR 2015012823 W KR2015012823 W KR 2015012823W WO 2016208825 A1 WO2016208825 A1 WO 2016208825A1
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WIPO (PCT)
Prior art keywords
amorphous
mold
die casting
preform
casting material
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PCT/KR2015/012823
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English (en)
Korean (ko)
Inventor
김기종
Original Assignee
주식회사 소프트다이아
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Publication of WO2016208825A1 publication Critical patent/WO2016208825A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
    • B22D27/11—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of mechanical pressing devices

Definitions

  • amorphous materials which have a structure in which metal atoms are arranged randomly, and whose glass transition point is observed in continuous heating data such as calorimetry and thermal expansion coefficient measurement, increase the cooling rate in the crystalline structure of existing metals. Alloying changed the structure to an amorphous phase, such as glass. When the crystal structure is changed to an amorphous metal, strength and toughness are increased in terms of structure, and corrosion resistance is improved. In terms of function, energy efficiency is increased and electromagnetic characteristics are improved.
  • amorphous metal materials as bulk materials
  • a method for producing an amorphous bulk metal material there are methods utilizing a solidification such as a copper alloy mold casting method, a high pressure die casting method, an arc melting method, a one-way melting method, a squeeze casting method, and a strip casting method.
  • t max the maximum thickness of the amorphous metal material formed by these solidification methods is not enough to expand the applicability as an engineering material, and the critical cooling rate (R c ) for solidifying the amorphous metal is very fast. There is this.
  • the present invention is to solve the various problems including the above problems, it is easy to mold the amorphous material, improving the surface defects of the amorphous die casting material and the molding method of the amorphous product which can greatly improve the productivity by reducing the processing time It is an object to provide a method.
  • these problems are exemplary, and the scope of the present invention is not limited thereby.
  • the first step of producing an amorphous preform using a die casting process And a second step of manufacturing an amorphous final molded body from the amorphous preform by press-pressing the amorphous preform in a heated state.
  • a method of forming an amorphous product There is provided a method of forming an amorphous product.
  • the second step may include a step of reducing the roughness of the amorphous final molded product more than the roughness of the amorphous preform.
  • the second step may include the step of reducing the number of surface defects of the amorphous final molded body more than the number of surface defects of the amorphous preform.
  • preheating the amorphous preform may further include.
  • a method of forming an amorphous product comprising: preparing a mold having a cavity formed to mold the amorphous preform after the first step and before the second step; Preheating the mold using a mold preheating device; Loading the mold into a mold press device; And loading an amorphous preform into the cavity of the mold.
  • a method for forming an amorphous product comprising: after the second step, unloading a molded amorphous final molded product with the mold; Cooling the unloaded amorphous final product with the mold; Taking out the amorphous final molded product from the mold; And conveying the mold to the mold preheating device.
  • the second step may include pressing the mold by using an upper pressing table detachable from the upper mold of the mold and a lower pressing table detachable from the lower mold of the mold. .
  • the amorphous preform and / or the mold may be induction heated at a temperature between the glass transition temperature (T g ) and the crystallization temperature (T x ) of the amorphous preform.
  • the step of producing an amorphous die casting material using a die casting process And pressing the mold with a press apparatus in a state where the amorphous die casting material is heated.
  • a method for improving surface defects of the amorphous die casting material is provided.
  • a method of improving surface defects of an amorphous die casting material comprising: manufacturing an amorphous die casting material using a die casting process; Thereafter, the method may further include preheating the amorphous preform using an amorphous diecasting material preheating device.
  • a method for improving surface defects of an amorphous die casting material comprising: manufacturing an amorphous die casting material using the die casting process; Thereafter, pressing the mold with a press apparatus while the amorphous die casting material is heated; Previously, preparing the mold in which the cavity is formed to mold the amorphous die casting material; Preheating the mold using a mold preheating device; Loading the mold into a mold press device; And loading the amorphous die casting material into the cavity of the mold.
  • a method for improving surface defects of an amorphous die casting material comprising: pressing a die with a press apparatus while the amorphous die casting material is heated; Thereafter, unloading the molded amorphous diecasting material with the mold; Cooling the unloaded amorphous die casting material with the mold; Taking out the amorphous die casting material from the mold; And conveying the mold to the mold preheating device.
  • the amorphous die casting material and / or the mold may be induction heated at a temperature between the glass transition temperature (T g ) and the crystallization temperature (T x ) of the amorphous die casting material.
  • FIG. 2 is a flow chart illustrating a method of forming an amorphous product in accordance with some other embodiments of the present invention.
  • FIG. 3 is a schematic diagram schematically illustrating an amorphous product forming system according to some embodiments of the invention.
  • FIG. 4 is a cross-sectional view illustrating the mold preheating apparatus of FIG. 3.
  • FIG. 5 is a cross-sectional view illustrating the mold press apparatus of FIG. 3.
  • FIG. 8 is a cross-sectional view showing another example of the mold press apparatus and mold of FIG. 5.
  • FIG. 9 is an enlarged cross-sectional view of the mold of FIG. 3.
  • FIG. 10 is a cross-sectional view of an amorphous preform and an amorphous final form in accordance with some embodiments of the present invention.
  • the roughness of the amorphous final molded product 2 is further reduced than the roughness of the amorphous preform 1 and the number of surface defects of the amorphous final molded product 2 is amorphous preliminary. It may comprise the step of reducing more than the number of surface defects of the molded body (1).
  • preparing an amorphous preform 1 using a die casting process S1
  • preheating the amorphous preform 1 S2
  • preparing the mold 10 in which the cavity C is formed so as to mold the amorphous preform 1 S3
  • preheating the mold 10 S4
  • loading the amorphous preform 1 into the cavity C of the mold 10 S6
  • forming the amorphous preform 1 as an amorphous final molded article 2
  • the step (S2) of preheating the amorphous preform (1) may be optionally omitted, as shown in FIG.
  • the step S4 of preheating the mold 10 may be selectively omitted.
  • Step S9 the step S10 of taking out the amorphous final molded product 2 from the mold 10, and the step S11 of conveying the mold 10 to the mold preheating device 20 may be further included.
  • the mold 10 is heated and pressurized by the mold press device 30 to form the amorphous preform 1 into the amorphous final molded body 2.
  • the upper mold 10-1 of the mold 10 and the upper presser 32-1 which can be attached and detached with the detachable device (33 in FIG. 5), and the lower mold 10-2 and the detachable device of the mold 10 (Fig.
  • the mold 10 can be pressurized using the lower presser 32-2 detachable with 33 of 5.
  • the pressed amorphous final molded product 2 may be weighed in the cavity C of the mold 10 to implement a complete amorphous final molded product 2 without including a separate metering process.
  • the amorphous final molded product 2 can be unloaded together with the mold 10 so that the amorphous final molded product 2 can be cooled together with the mold 10 in the cooling device 80.
  • the amount of deformation formed from the amorphous preform 1 to the amorphous final molded product 2 is, for example, less than the amount of deformation formed from the amorphous plate, wire, rod or mold to the amorphous final molded object 2. Can be.
  • the amount of deformation formed from the amorphous preform 1 to the amorphous final molded product 2 is less than the total amount of deformation reaching the amorphous final molded product 2 only by plastic deformation without die casting.
  • the amorphous preform 1 may include, for example, an amorphous powder produced by rapid solidification.
  • the rapid solidification method is, for example, a gas injection method for injecting a high pressure gas and / or high pressure water to the molten alloy, a centrifugal separation method for producing a powder using a disk that rotates the molten metal rapidly, a roll for fast rotation It may include a melt spinning method such that the powder is produced by.
  • the amorphous powders may be heated and compressed in a preforming mold.
  • the heating may be performed such that the temperature of the particle surface or the entire particle of the amorphous powders is between the glass transition temperature (T g ) and the crystallization temperature (T x ).
  • the compression may be implemented by applying a compressive force to the amorphous powder. That is, the amorphous preform 1 may be realized by compressing the amorphous powders after heating or simultaneously compressing the amorphous powders.
  • FIG. 10 is a cross-sectional view of an amorphous preform and an amorphous final form in accordance with some embodiments of the present invention.
  • the above-described molding method is performed on the amorphous preform 1 having about 90% plastic deformation, and about 10% more plastic deformation, thereby achieving about 100% plastic deformation of the amorphous final molded product.
  • the amorphous material can be easily plastically deformed.
  • the die casting process alone can not be implemented, but by using the molding method of the amorphous product of the present invention, the amorphous material is plastically deformed in multiple steps, thereby easily firing the amorphous material.
  • the number of roughness and surface defects of the amorphous final molded article 2 of the present invention can be produced by reducing the number of roughness and surface defects of the amorphous preform 1. That is, the amorphous final molded product 2 may have improved surface quality than the amorphous preform 1.
  • FIG. 11 is an enlarged cross-sectional view of a portion of an amorphous preform and an amorphous final form according to some embodiments of the present invention.
  • the surface of the amorphous preform 1 manufactured by performing the die-casting process of the present invention has uneven irregularities.
  • the surface of the amorphous final molded body 2 is formed more smoothly than the amorphous preform 1 by performing pre-heating of the mold and / or the amorphous preform 1 beforehand.
  • the method for forming an amorphous product according to the present invention roughness and surface defects can be reduced, whereby the amorphous final molded article 2 can have improved surface quality than the amorphous preform 1.
  • Such a method for forming an amorphous product of the present invention by plastic deformation of the amorphous material in a multi-stage, not only can easily plastic deformation of the amorphous material, but also to produce an amorphous final molded article (2) with improved surface quality and yield Can be.
  • the method for forming an amorphous product according to some embodiments of the present invention described above, pre-heating the mold 10 and / or amorphous preform 1, and then preheated the mold 10 and / or amorphous preliminary By performing this processing with the molded body 1, it is possible to increase the precision and accuracy of the processing temperature.
  • the processing temperature of the amorphous preform 1 can be kept constant and uniform, and the productivity can be greatly improved by reducing the processing time.
  • the amorphous product molding system 1000 embodying a method for forming an amorphous product according to embodiments of the present invention includes a mold preheating device 20, a mold press device 30, and a mold.
  • the loading device 40 and the object loading device 50 may be included.
  • the above-described devices may be connected to each other by production lines by the conveyor device 100 or other robotic devices. It may also be a factory system installed to produce an amorphous preform 1 of constant shape along a production line into an amorphous final molded part 2 of a particular shape.
  • the cavity C is formed therein to form the amorphous preform 1, and the upper mold 10-1 and the lower mold 10-2 are coupled to each other. It may include.
  • the mold 10 may not only include a ceramic or metal mold, but may also include a plurality of mold structures having various shapes coupled to each other, such as a left mold, a right mold, and an intermediate mold.
  • the mold preheating device 20 is a device capable of preheating the mold 10 and may include a mold preheating chamber 21 and a mold preheating heater 22.
  • the mold preheating chamber 21 is formed with a mold accommodating space A for accommodating the mold 10.
  • a mold accommodating space A for accommodating the mold 10.
  • an inlet 21 a provided on one side is formed, and the other side is provided. It may comprise an overall box-shaped chamber in which the outlet 21b is formed.
  • the mold preheating chamber 21 may include not only a general processing chamber but also a vacuum chamber or an inert gas chamber.
  • the mold preheating heater 22 may be installed inside the mold preheating chamber 21, and may include a heater capable of preheating the mold 10, for example, a general electrothermal heater or other electromagnetic induction heating heater. .
  • the inert gas curtain device 23 may be installed at the inlet 21a and the outlet 21b of the mold preheating chamber 21 to prevent heat loss.
  • the inert gas may be a gas that does not affect the process, such as nitrogen gas or argon gas.
  • the mold 10 may be heated to a specific temperature by the mold preheating heater 22 while passing through the mold preheating chamber 21 while moving by the conveyor apparatus 100, as shown in FIG. 4.
  • the specific temperature may be that the temperature of the particle surface or the entire particle of the amorphous preform 1 is between the glass transition temperature (T g ) and the crystallization temperature (T x ).
  • T g glass transition temperature
  • T x crystallization temperature
  • such a temperature may be maintained continuously, or at least a temperature close to this temperature may be maintained continuously.
  • the particular temperature may include, for example, about 550 400 degrees Celsius.
  • the mold press apparatus 30 may be detachably installed with the mold 10 and may include a device capable of heating and pressurizing the mold 10.
  • the mold press apparatus 30 may include a mold press chamber 31 and a pressure press 32.
  • a mold accommodating space B for accommodating the mold 10 may be formed.
  • the inlet 31a having the gate G is formed at one side and the outlet 31b having the gate G is formed at the other side.
  • the mold press chamber 31 may include a heater capable of heating the mold 10 or the amorphous preform 1 therein.
  • the mold press chamber 31 may include a general processing chamber, as well as a vacuum chamber, an inert gas chamber, and the like.
  • the press press 32 may be installed in the mold press chamber 31.
  • type 10-2 of the metal mold 10 and the detachable apparatus 33 are removable.
  • Possible lower presser 32-2 may be included.
  • the detachable device 33 includes a device that detachably couples the mold 10 to the upper press table 32-1 and the lower press table 32-2 of the press press 32. can do.
  • it may include a wide variety of types of detachable devices, such as using a rail, a protrusion, a groove, a pin and a pinhole.
  • the mold loading apparatus 40 may include an apparatus for loading the mold 10 preheated by the mold preheating apparatus 20 into the mold press apparatus 30.
  • the object loading device 50 may include an apparatus for loading the amorphous preform 1 into the cavity C of the mold 10.
  • the mold loading device 40 and the object loading device 50 can be separate conveying devices, as well as the same conveying device.
  • the mold loading device 40 and the object loading device 50 may include various transfer robots, various conveyor devices 100, and the like.
  • the amorphous preform preheating apparatus 90 may preheat the amorphous preform 1, and may include, for example, various types of preheating heaters or preheating chambers.
  • the amorphous preform preheating apparatus 90 may have the same configuration as the mold preheating apparatus 20 described above. Therefore, detailed description is omitted here.
  • the mold 10 may be preheated in advance using the mold preheating device 20, and the amorphous preform 1 may be preheated in advance using the amorphous preform preheating device 90.
  • the preheated mold 10 and the amorphous preform 1 may be loaded into the mold press device 30 by the mold loading device 40 and the object loading device 50, respectively.
  • the mold 10 and / or amorphous preform 1 may already be preheated and easily heated to a specific temperature by a heater inside the mold press apparatus 30. At this time, it can be heated at the same time between the glass transition temperature (T g ) and the crystallization temperature (T x ), for example about 400 degrees Celsius, so that the temperature of the outer surface and the inside of the amorphous preform 1 is uniform.
  • the amorphous preform 1 heated in the temperature section ⁇ T x of the subcooled liquid phase region is in a viscous semi-solid state. In addition, the viscous semi-solid state is formed, and the amorphous preform 1 is compressed, so that flow occurs in the internal tissue and finally the amorphous endform 2 can be realized.
  • the amorphous preform 1 of the viscous semi-solid state is compressed in the temperature section ⁇ T x of the subcooled liquid phase region, so that defects of the remaining surface before compression, for example, a flow mark ), Defect lines such as weld lines, bubbles and the like can be filled and removed easily.
  • the amorphous final molded article 2 may include, for example, an amorphous bulk material, an amorphous ribbon material, an amorphous tape, an amorphous wire rod, or the like.
  • at least a part of the heating and pressurization process may be performed in a vacuum state or inert gas atmosphere, in which case the internal pores of the amorphous final molded product 2 may be effectively dissipated.
  • the amorphous product forming system 1000 in addition to the above-described apparatus, the press-molded amorphous final molded body 2 and the mold 10 It may include a mold unloading device 60 for unloading together.
  • the cooling apparatus 80 for cooling the amorphous final molded product 2 unloaded by the mold unloading device 60 together with the mold 10 and the amorphous final molded product 2 completed in the mold 10 are unloaded.
  • die preheating apparatus 20 may be further included.
  • the mold loading device 40 or the object loading device 50 may be installed in the loading load lock chamber 71, and the mold unloading device 60 may be an unloading load lock. It may be installed in the chamber 72.
  • the cooling device 80 may include a cooling device 80 for bringing the amorphous final molded object 2 completed in the mold press device 30 together with the mold 10 to a solid cooling block (not shown). .
  • FIG. 7 is a cross-sectional view illustrating an example of a mold press device 30 and a mold 10 according to some other embodiments of the present invention
  • FIG. 8 is a mold press device 30 according to some other embodiments of the present invention.
  • the amorphous product forming system 1000 includes a mold 10 in which a cavity C is formed to mold the amorphous preform 1. It may include a mold press device 30 capable of pressing. In addition, an electromagnetic induction heating heater (H1) (H2) installed in the mold press device 30 and / or the mold 10 and capable of electromagnetic induction heating of the mold 10 and / or the amorphous preform 1 is provided. It may include.
  • H1 electromagnetic induction heating heater
  • the electromagnetic induction heating heater H1 may be installed in the mold press device 30, and as shown in FIG. 8, the electromagnetic induction heating heater H2 may be the mold 10. Can be installed on
  • the electromagnetic induction heating heater H1 is installed in the upper presser 32-1 or the lower presser 32-2, as shown in FIG. 7, so that the mold 10 or the amorphous preform 1 is installed.
  • the electromagnetic induction heating heater H2 may be installed in the mold 10 to electromagnetically heat the amorphous preform 1.
  • the temperature between the glass transition temperature (T g ) and the crystallization temperature (T x ) at the same time for example, so that the temperature of the outer surface and the inside of the amorphous preform 1 is uniform, for example, about It can be heated at 400 degrees.
  • FIG. 9 is an enlarged cross-sectional view of the mold of FIG. 3.
  • the ejection pin 11 may be installed in the mold 10 to facilitate withdrawal after processing the amorphous preform 1.
  • the shape of the mold 10 is not limited to the drawings, but may be formed in a wide variety of shapes depending on the shape of the amorphous final molded product 2.
  • a wide variety of devices such as various amorphous preform supply parts, mold bites, heating devices, cooling devices, and the like may be incidentally installed.
  • the method for improving the surface defects of the die casting material the step of manufacturing the amorphous die casting material using a die casting process and pressurized the mold with a press apparatus in the amorphous die casting material is heated in the preheated state It may include the step.
  • the pressurizing the mold may include: reducing roughness of the amorphous final molded product more than roughness of the amorphous preform and increasing the number of surface defects of the amorphous final molded product. It may include the step of reducing more than the number of.
  • the method of improving the surface bonding of the die casting material according to some embodiments of the present invention may be the same as the method of forming an amorphous product according to some embodiments described above with reference to FIGS. 1 and 2. Therefore, detailed description is omitted here.
  • the method for forming an amorphous product and the method for improving the surface bonding of the die casting material according to some embodiments of the present invention described above may not only plastically deform the amorphous material by plastic deformation of the amorphous material in multiple steps, Amorphous products with improved quality and yield can be realized.

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  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

Afin d'obtenir un procédé de formation d'un produit amorphe et un procédé d'amélioration des défauts de surface d'un matériau moulé sous pression amorphe, qui peuvent former aisément un matériau amorphe et peuvent réduire un temps de traitement afin d'augmenter significativement la productivité, la présente invention concerne un procédé de formation d'un produit amorphe et un procédé de prévention des défauts de surface d'un matériau moulé sous pression amorphe, le procédé de formation de produit amorphe comprenant : une première étape de fabrication d'une préforme amorphe au moyen d'un processus de moulage sous pression ; et une deuxième étape de fabrication d'un produit amorphe final à partir de la préforme amorphe par conduite d'une compression de moule sur la préforme amorphe au moyen d'un appareil de presse tandis que la préforme amorphe est préchauffée.
PCT/KR2015/012823 2015-06-24 2015-11-27 Procédé de formation de produit amorphe et procédé d'amélioration des défauts de surface d'un matériau moulé sous pression amorphe WO2016208825A1 (fr)

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KR10-2015-0089592 2015-06-24
KR1020150089592A KR20170000561A (ko) 2015-06-24 2015-06-24 비정질 제품의 성형방법 및 비정질 다이캐스팅재의 표면결함 개선방법

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WO2016208825A1 true WO2016208825A1 (fr) 2016-12-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05309427A (ja) * 1991-05-31 1993-11-22 Takeshi Masumoto 非晶質合金材の成形加工方法
JPH11323454A (ja) * 1998-03-10 1999-11-26 Akihisa Inoue 非晶質合金成形品の製造方法
JP2013013907A (ja) * 2011-07-01 2013-01-24 Jfe Steel Corp 金属板の温間プレス成形方法
WO2015030566A1 (fr) * 2013-08-12 2015-03-05 Kim Kijong Procédé de fabrication d'un matériau amorphe
WO2015050337A1 (fr) * 2013-10-02 2015-04-09 김기종 Système et procédé de moulage de produit amorphe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05309427A (ja) * 1991-05-31 1993-11-22 Takeshi Masumoto 非晶質合金材の成形加工方法
JPH11323454A (ja) * 1998-03-10 1999-11-26 Akihisa Inoue 非晶質合金成形品の製造方法
JP2013013907A (ja) * 2011-07-01 2013-01-24 Jfe Steel Corp 金属板の温間プレス成形方法
WO2015030566A1 (fr) * 2013-08-12 2015-03-05 Kim Kijong Procédé de fabrication d'un matériau amorphe
WO2015050337A1 (fr) * 2013-10-02 2015-04-09 김기종 Système et procédé de moulage de produit amorphe

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