WO2017067317A1 - Procédé de fabrication d'une cavité de coulée sous pression à dissipation de chaleur par refroidissement à eau pour canal d'écoulement de métal à section transversale variable - Google Patents

Procédé de fabrication d'une cavité de coulée sous pression à dissipation de chaleur par refroidissement à eau pour canal d'écoulement de métal à section transversale variable Download PDF

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Publication number
WO2017067317A1
WO2017067317A1 PCT/CN2016/096421 CN2016096421W WO2017067317A1 WO 2017067317 A1 WO2017067317 A1 WO 2017067317A1 CN 2016096421 W CN2016096421 W CN 2016096421W WO 2017067317 A1 WO2017067317 A1 WO 2017067317A1
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WO
WIPO (PCT)
Prior art keywords
metal
die
flow channel
casting
cavity
Prior art date
Application number
PCT/CN2016/096421
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English (en)
Chinese (zh)
Inventor
李先超
陈小军
Original Assignee
成都泰格微波技术股份有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 成都泰格微波技术股份有限公司 filed Critical 成都泰格微波技术股份有限公司
Publication of WO2017067317A1 publication Critical patent/WO2017067317A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present invention relates to the technical field of manufacturing heat dissipation of electronic components, and more particularly to a manufacturing process of a water-cooling heat-dissipating die-casting cavity of a variable-section metal runner.
  • Any electronic device has a certain loss during operation, and most of the loss becomes heat.
  • Low-power devices have low losses, no heat sinks, and high-power devices have large losses. If heat dissipation is not taken, the temperature of the device can reach or exceed the allowable junction temperature and the device will be damaged. Therefore, it is necessary to add a heat sink.
  • the most common one is to install the power device on the heat sink, and use the heat sink to dissipate the heat to the surrounding space. If necessary, add a cooling fan to enhance the cooling and cooling at a certain wind speed.
  • Flow cooling water cooling plates are also used on power devices in some large equipment, which have better heat dissipation.
  • the existing heat dissipating cavity is a machine for CNC machining the extruded aluminum alloy sheet into a cavity and a buried metal tube, and applying a thermal conductive glue to the groove and then loading the metal tube.
  • the following defects are encountered in the processing of this process: 1.
  • the extruded aluminum alloy sheet material is processed into the cavity and the groove for installing the metal tube, and the material waste is large; 2.
  • the product processing cycle is long; 3.
  • the product processing cost High 4, processing the groove on the aluminum alloy sheet, then applying the thermal conductive glue in the groove, installing the metal tube, the process is complicated, and the technical level of the operator is high; 4. There is a gap between the metal tube and the aluminum alloy cavity , non-seamless contact, low heat dissipation efficiency.
  • the object of the present invention is to overcome the shortcomings of the prior art, and provide a low cost of raw materials, low processing cost, satisfying the heat dissipation effect of electronic components, and avoiding melting or squeezing of the metal flow path during the die-casting process.
  • a variable cross section metal flow channel water-cooling heat-dissipating die-casting cavity The manufacturing process of the body, which includes the following steps:
  • step S2 after the end of step S2, the high temperature oil is introduced into the flow channel of the box;
  • S4 sealing the inlet and the outlet of the flow passage of the casing with screws to prevent high temperature oil from overflowing from the metal flow passage; [0010] S5, placing the flow passage of the casing into the die casting mold, and positioning in the die casting mold The device is positioned; [0011] S6, die-casting, die-casting aluminum alloy liquid tightly wraps the casing flow channel under the action of the die-casting machine to form a complete product;
  • the shape of the metal flow channel is circular, elliptical, square, irregular or variable cross section.
  • the metal flow channel may be made of aluminum, steel, copper, iron, or a titanium alloy.
  • the present invention has the following advantages: (1) The metal flow channel is die-casted into the interior of the aluminum alloy casting by means of a pre-buried metal flow passage, without processing the flow passage after molding, saving raw materials and raw material costs. Low, low processing costs. (2) The heat dissipation cavity is integrated with the metal flow path at one time. This method shortens the product processing cycle, simplifies the manufacturing process, reduces the manufacturing difficulty, and requires less technical level for the operator. (3) The heat dissipation cavity is die-casted from aluminum alloy. The heat of the electronic components is transferred to the die-casting cavity, and then transferred to the metal flow channel by the cavity, and the heat is taken away by the cooling water in the metal flow channel.
  • the metal flow passage is pre-buried and die-cast in the aluminum alloy casting, and is formed once, and the metal flow passage and the aluminum alloy cavity are in seamless contact, and the heat dissipation efficiency is high.
  • the high temperature aluminum alloy solution cannot melt gold It is a flow channel, and the metal flow channel does not undergo thermal deformation, which ensures that the product can be applied to the radar.
  • FIG. 1 is a schematic structural view of processing a variable section cavity and a heat dissipating tooth on a metal plate;
  • FIG. 2 is a structural schematic view of welding a metal cover plate on a variable-section cavity and clogging a screw at a head-to-tail exit of a variable-section cavity;
  • FIG. 3 is a schematic structural view of a water-cooling heat-dissipating die-casting cavity of a variable-section metal runner;
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • a manufacturing process for a water-cooling heat-dissipating cavity of a variable-section metal runner comprising the following steps:
  • the metal cover 3 is welded on the top of the variable-section cavity 2 to form a closed casing flow path.
  • step S3 after the end of step S2, the high temperature oil is introduced into the flow channel of the casing;
  • S4 plugging the inlet and outlet of the flow channel of the casing with a screw 5 to prevent high temperature oil from overflowing from the metal flow channel; [0030] As shown in FIG. 3, S5, placing the flow path of the casing into the die casting mold And positioning with a positioning device in the die casting mold;
  • S6 die-casting, die-casting aluminum alloy liquid tightly wraps the casing flow channel under the action of the die-casting machine to form a complete product, because the high-temperature oil has a high thermal conductivity, when the high-temperature aluminum alloy solution After contact with the metal flow channel, the heat on the aluminum alloy solution is directly absorbed by the high temperature oil, thereby avoiding the aluminum alloy solution melting the metal flow channel.
  • the hydraulic pressure of the high temperature oil offsets the pressure acting on the metal flow path, and The role of supporting the metal flow channel avoids the deformation of the metal flow channel.
  • the processed variable-section metal flow channel water-cooling heat-dissipating die-casting cavity is used as follows:
  • the electronic component is mounted on the top surface of the water-cooling heat-dissipating cavity of the variable-section metal runner and above the heat dissipating tooth,
  • the heat generated by the electronic components is transferred to the aluminum alloy die-casting parts, and the aluminum alloy die-casting parts transfer the heat to the heat-dissipating teeth, and the heat of the heat-dissipating teeth 4 is discharged from the metal flow channels by the cooling liquid, which greatly enhances the reinforcement.
  • the heat dissipation effect of the heat dissipation cavity ensures the normal operation of the electronic components.
  • the operating temperature of the electronic component is about 80 ° C, and the water-cooled heat-compression cavity of the variable-section metal flow channel is mounted on the cavity.
  • the operating temperature of the electronic components is about 50 °C. It can be seen that the heat dissipation effect of the heat dissipation cavity obtained by the process is obviously superior to the conventional use of the CNC machine to add the cavity and then embed the metal. The heat dissipation effect of the tube.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une cavité de coulée sous pression à dissipation de chaleur par refroidissement à eau pour un canal d'écoulement de métal à section transversale variable, comprenant les étapes suivantes : S1. la sélection d'une plaque métallique (1) et l'usinage d'une cavité (2) à section transversale variable sur la plaque métallique (1) ; S2. le soudage d'un couvercle métallique (3) sur le dessus de la cavité (2) à section transversale variable pour former un canal d'écoulement de boîtier fermé et en même temps l'ouverture d'un trou et le taraudage à la fois au niveau de la tête et de la queue du canal d'écoulement de boîtier ; S3. l'introduction d'une huile à haute température dans le canal d'écoulement de boîtier de métal ; S4. l'étanchéification de l'orifice d'entrée et de sortie avec des boulons (5) de manière à empêcher l'huile à haute température de déborder à partir du canal d'écoulement de métal ; S5. le placement du canal d'écoulement de boîtier de métal dans le moule de coulée sous pression ; S6. l'enveloppement étroit du canal d'écoulement de boîtier avec un alliage liquide d'aluminium de coulée sous pression sous l'action de la force d'injection sous pression d'une machine de coulée sous pression afin de former un produit complet ; S7. l'ouverture du moule et le retrait du moulage ; et S8. l'ébavurage et l'ouverture des boulons à l'entrée et à la sortie du canal d'écoulement de métal, suivi du soufflage d'air comprimé pour refouler l'huile à haute température hors du canal d'écoulement de métal. Le procédé de fabrication présente un faible coût de traitement, permet d'éviter tout phénomène de déformation thermique ou de fusion du canal d'écoulement de métal lors du procédé de coulée sous pression et permet un effet de dissipation de chaleur pour composants électroniques.
PCT/CN2016/096421 2015-10-23 2016-08-23 Procédé de fabrication d'une cavité de coulée sous pression à dissipation de chaleur par refroidissement à eau pour canal d'écoulement de métal à section transversale variable WO2017067317A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510692547.7 2015-10-23
CN201510692547.7A CN106612604B (zh) 2015-10-23 2015-10-23 一种变截面金属流道水冷散热压铸腔体的制造工艺

Publications (1)

Publication Number Publication Date
WO2017067317A1 true WO2017067317A1 (fr) 2017-04-27

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PCT/CN2016/096421 WO2017067317A1 (fr) 2015-10-23 2016-08-23 Procédé de fabrication d'une cavité de coulée sous pression à dissipation de chaleur par refroidissement à eau pour canal d'écoulement de métal à section transversale variable

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CN (1) CN106612604B (fr)
WO (1) WO2017067317A1 (fr)

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* Cited by examiner, † Cited by third party
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CN113857462A (zh) * 2021-08-19 2021-12-31 北京科技大学 一种内含复杂变截面孔道散热器的制备方法
CN114433812A (zh) * 2021-12-30 2022-05-06 遵义航天新力精密铸锻有限公司 一种散热器抗变形加工工艺

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WO2013180790A1 (fr) * 2012-05-11 2013-12-05 Raytheon Company Coffrets d'électronique à hautes performances thermiques et système et procédé apparentés
CN103921089A (zh) * 2014-05-07 2014-07-16 成都泰格微波技术股份有限公司 一种新型的预埋金属管压铸散热腔体制造工艺
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CN106612604B (zh) 2018-12-04
CN106612604A (zh) 2017-05-03

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