EP3530772A1 - Procédé et appareil de formage par déformation plastique et de renforcement à base de vibrations ultrasonores - Google Patents

Procédé et appareil de formage par déformation plastique et de renforcement à base de vibrations ultrasonores Download PDF

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Publication number
EP3530772A1
EP3530772A1 EP17916449.6A EP17916449A EP3530772A1 EP 3530772 A1 EP3530772 A1 EP 3530772A1 EP 17916449 A EP17916449 A EP 17916449A EP 3530772 A1 EP3530772 A1 EP 3530772A1
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EP
European Patent Office
Prior art keywords
ultrasonic vibration
toughening
forming
amorphous alloy
mold
Prior art date
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EP17916449.6A
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German (de)
English (en)
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EP3530772A4 (fr
EP3530772B1 (fr
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Publication of EP3530772A4 publication Critical patent/EP3530772A4/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/03—Amorphous or microcrystalline structure

Definitions

  • the present invention is a.
  • the invention belongs to the field of amorphous alloy thermoplastic forming, and more particularly relates to a plastic forming and gradient toughening method and a device based on ultrasonic vibration.
  • Amorphous alloy is a novel material with excellent properties such as high strength, corrosion resistance and wear resistance. Amorphous alloy exhibits good superplasticity in the hot state and can achieve near net shape formation of parts. However, due to the significant room temperature brittleness of the amorphous alloy, the amorphous alloy parts may directly undergo brittle fracture and completely fail once they are overloaded during service, making it difficult to directly apply the amorphous alloy parts in occasions where impact loads are present. Therefore, it is necessary to further improve the toughness of the amorphous alloy without impairing its excellent properties so as to improve the impact resistance of the amorphous alloy parts.
  • the amorphous alloy is in a thermodynamically metastable state, and spontaneously transformed to its thermodynamically stable state after obtaining sufficient energy, that is, crystallization occurs. After the amorphous alloy is crystallized, its properties are also changed. By forming nanocrystallines inside the amorphous alloy, the strength and toughness of the amorphous alloy can be remarkably improved. Therefore, according to the requirements of actual service conditions for the performance of amorphous alloy parts, nanocrystallines can be induced locally in the amorphous matrix by some means to form a nanocrystalline toughened amorphous matrix composite with a mechanical property gradient.
  • Chinese Patent Publication No. 101736213 proposed a method for strengthening and toughening an amorphous alloy by ultrasonic treatment, in which the amorphous alloy is strengthened and toughened by placing the amorphous alloy in a cooling water tank with a temperature lower than the crystallization temperature of the amorphous alloy and then applying an oscillation frequency with a power less than 3 ⁇ 10 4 W/mm 2 per unit area at the bottom of the water tank.
  • the amorphous alloy treated by the method has a great improvement in plastic deformation capability at room temperature and an increase in thermal discharge in relaxation, with the precondition that the fracture strength is not changed.
  • this method needs to introduce a second phase to perform overall toughening treatment on the amorphous alloy, is only suitable for the processing of sheet products, and cannot enable the processing of actual parts with complex shapes as well as local nanocrystalline gradient toughening of the parts according to actual use requirements.
  • the above three strengthening and toughening methods are all not combined with the thermoplastic forming process of the amorphous alloy, and thus the parts need to be specially processed after being formed, resulting in complicated process and long production cycle.
  • the present invention provides a plastic forming and gradient toughening method and a device based on ultrasonic vibration, which aims to achieve nanocrystallization of a local region to be toughened on the amorphous alloy part by applying ultrasonic vibration to the local region to be toughened with an insert connected to an ultrasonic vibration amplitude transformer, thereby solving the technical problem of local toughening during thermoplastic forming.
  • a plastic forming and gradient toughening method based on ultrasonic vibration characterized in that the toughening method comprising:
  • the forming temperature is between a glass transition temperature and a crystallization temperature of the raw material blank.
  • the heating rod is preferably a resistance heating rod.
  • the toughening device is preferably a mold for thermoplastic forming.
  • the amorphous alloy is a Pd, Pt, Au, Zr, Ti, Fe, Cu, Ni, Al, Mg or Ce based amorphous alloy with a thermoplastic forming ability.
  • a device for use in the above toughening method characterized in that the device comprises an upper mold, a lower mold and a female mold,
  • the upper mold and the lower mold are oppositely disposed and form a mold cavity with the female mold
  • the upper mold and the lower mold are respectively provided with a punch and one or more inserts
  • the punches are connected to a driving servo press and used to form raw material blank into a desired three-dimensional structure
  • the inserts are connected to an ultrasonic vibration amplitude transformer and used to apply ultrasonic vibration to one or more portions to be toughened
  • the female mold is provided with one or more heating rod for heating the raw material blank.
  • the present invention has the following beneficial effects:
  • FIG. 1 is a flow chart of a toughening method according to a preferred embodiment of the present invention, and as shown in FIG. 1 , a plastic forming and gradient toughening method based on ultrasonic vibration is illustrated, the method comprising:
  • the amorphous alloy blank is placed in the mold cavity and heated by the one or more resistance heating rods to a temperature between a glass transition temperature and a crystallization temperature.
  • the lower mold and the female mold are kept stationary, and ultrasonic vibration is started after the upper mold is moved down and comes into contact with the blank.
  • the upper mold continues to be moved down until the upper mold, the lower mold and the female mold are completely closed to obtain a desired amorphous alloy part.
  • the ultrasonic vibration is stopped, and the upper mold is moved up to be separated from the part.
  • the lower mold is moved up until the part is pushed out of the female mold.
  • FIG. 2 is a schematic structural diagram of an amorphous alloy gear member forming device according to the preferred embodiment of the present invention, and as shown in FIG. 2 , ultrasonic vibration assisted hot closed-die forging forming of the amorphous alloy gear member is illustrated.
  • the forming device is composed of three parts of an upper mold, a lower mold and a female mold 4.
  • the upper mold is composed of an upper ultrasonic vibration ring 1 and an upper punch 2
  • the upper punch 2 is embedded in the upper ultrasonic vibration ring 2
  • the upper punch 2 is provided with a shoulder for limiting the movement of the upper ultrasonic vibration ring 1.
  • the lower mold is composed of a lower ultrasonic vibration ring 6 and a lower punch 7, the lower punch 7 is embedded in the lower ultrasonic vibration ring 6, and the lower punch 7 is provided with a shoulder for limiting the movement of the lower ultrasonic vibration ring 6.
  • the upper punch 2 is connected to an upper slider of a servo press.
  • the lower punch 7 is connected to a lower slider of the servo press.
  • the upper ultrasonic vibration ring 1 and the lower ultrasonic vibration ring 6 are respectively connected to an ultrasonic generator.
  • An inner wall of the female mold 4 is machined in a tooth shape, and one or more resistance heating rod
  • a cylindrical blank 5 is first placed inside the female mold 4.
  • the resistance heating rods 3 are started to heat the blank 5 to a set temperature.
  • the lower molds (6 and 7) and the female mold 4 are kept stationary.
  • the upper punch 2 drives the upper ultrasonic vibration ring 1 to move down until they come into contact with the upper surface of the blank 5.
  • the upper ultrasonic vibration ring 1 and the lower ultrasonic vibration ring 6 are started to vibrate at a set frequency and amplitude.
  • the upper punch 2 continues to drive the upper ultrasonic vibration ring 1 to move down at a set loading rate until the female mold 4 is completely filled by the blank 5. In this process, the ultrasonic vibration concentrates on the edge portion of the blank 5, that is, the tooth portion of the gear member.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP17916449.6A 2017-12-11 2017-12-19 Procédé et appareil de formage par déformation plastique et de renforcement à base de vibrations ultrasonores Active EP3530772B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711304450.XA CN108085632B (zh) 2017-12-11 2017-12-11 一种基于超声振动的塑性成形及增韧工艺方法及其装置
PCT/CN2017/117069 WO2019113995A1 (fr) 2017-12-11 2017-12-19 Procédé et appareil de formage par déformation plastique et de renforcement à base de vibrations ultrasonores

Publications (3)

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EP3530772A1 true EP3530772A1 (fr) 2019-08-28
EP3530772A4 EP3530772A4 (fr) 2019-12-18
EP3530772B1 EP3530772B1 (fr) 2021-06-16

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EP (1) EP3530772B1 (fr)
CN (1) CN108085632B (fr)
WO (1) WO2019113995A1 (fr)

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CN109576514B (zh) * 2018-11-05 2021-04-06 华中科技大学 非晶基复合材料、制备方法及超声振动热塑性成形装置
CN110026478B (zh) * 2019-04-30 2024-05-03 中国民用航空飞行学院 基于气压加载的振动蠕变复合时效渐进成形的方法和装置
CN110117711B (zh) * 2019-05-05 2021-01-19 深圳大学 一种驱动非晶合金快速回春的方法
JP7207347B2 (ja) * 2020-02-13 2023-01-18 トヨタ自動車株式会社 被打ち抜き材の製造方法
CN111531175A (zh) * 2020-05-09 2020-08-14 苏州大学 粉末浆料超声场助压印成型微结构装置
CN111590190B (zh) * 2020-05-28 2021-08-03 广东工业大学 一种用于大尺寸非晶合金的超声摩擦焊接成型方法
CN111753452B (zh) * 2020-06-23 2023-04-07 华中科技大学 一种非晶合金零件的能场辅助智能多点成形方法及系统
CN112077303A (zh) * 2020-08-20 2020-12-15 崇义章源钨业股份有限公司 棒线材连排模具及其的制造方法
CN114058890B (zh) * 2021-11-24 2022-04-19 西北工业大学 一种三维超声结合声场检测制备Mg-Al-Zn-Mn-Cu多元合金的方法
CN114178387B (zh) * 2021-12-14 2023-07-04 沈阳航空航天大学 一种超声振动辅助燃烧室帽罩粘性介质成形的装置
CN115847883A (zh) * 2022-11-14 2023-03-28 临海伟星新型建材有限公司 一种利用振动-温度复合场退火制备高韧性pp-r塑料管道的方法及装置

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JP3127310B2 (ja) * 1991-05-31 2001-01-22 本田技研工業株式会社 非晶質合金の製造方法
JP2000140999A (ja) * 1998-11-11 2000-05-23 Toyota Motor Corp 半凝固ビレットの製造方法
JP4112952B2 (ja) * 2002-11-19 2008-07-02 新日本製鐵株式会社 表層部をナノ結晶化させた金属製品の製造方法
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Publication number Publication date
EP3530772A4 (fr) 2019-12-18
CN108085632B (zh) 2019-07-23
EP3530772B1 (fr) 2021-06-16
CN108085632A (zh) 2018-05-29
WO2019113995A1 (fr) 2019-06-20

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