WO2013154103A1 - Élément fonctionnel comprimé et son procédé de production - Google Patents

Élément fonctionnel comprimé et son procédé de production Download PDF

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Publication number
WO2013154103A1
WO2013154103A1 PCT/JP2013/060714 JP2013060714W WO2013154103A1 WO 2013154103 A1 WO2013154103 A1 WO 2013154103A1 JP 2013060714 W JP2013060714 W JP 2013060714W WO 2013154103 A1 WO2013154103 A1 WO 2013154103A1
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WO
WIPO (PCT)
Prior art keywords
forging
range
magnesium
scroll
magnesium alloy
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.)
Ceased
Application number
PCT/JP2013/060714
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English (en)
Japanese (ja)
Inventor
平渡　末二
芳夫 小和田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanden Corp
Original Assignee
Sanden Corp
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.)
Filing date
Publication date
Application filed by Sanden Corp filed Critical Sanden Corp
Publication of WO2013154103A1 publication Critical patent/WO2013154103A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
    • 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
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/24—Manufacture essentially without removing material by extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/028—Magnesium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0469—Other heavy metals
    • F05C2201/0487—Manganese
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties

Definitions

  • the present invention relates to a compression function member and a manufacturing method thereof.
  • Patent Document 1 discloses a scroll type fluid machine in which a movable scroll is formed of a magnesium (Mg) alloy.
  • Patent Documents 2 and 3 disclose a method for producing a magnesium alloy forged member to which a rare earth metal such as gadolinium (Gd) or yttrium (Y) is added.
  • a rare earth metal such as gadolinium (Gd) or yttrium (Y) is added.
  • Scrolls made of magnesium alloy can reduce the weight by up to about 30% compared to those made of aluminum (Al) alloy.
  • Al aluminum
  • the magnesium alloy material for forging has lower mechanical strength than the aluminum alloy material for forging. It is difficult to satisfy the mechanical strength.
  • magnesium alloy material for forging materials mainly composed of magnesium, aluminum, and zinc (Zn) such as AZ31 material, AZ80 material, and AZ91 material are well known. Even with a high AZ80 material, the tensile stress of 0.2% proof stress is about 250 MPa, and this cannot sufficiently satisfy the mechanical strength of the scroll.
  • Patent Documents 2 and 3 it may be possible to improve the mechanical strength of the forging magnesium alloy material by adding a rare earth metal.
  • rare earth metals can only increase the tensile stress of 0.2% proof stress to only about 300 MPa even though they are expensive, they are not practical for application to general-purpose products.
  • the present invention has been made in view of such problems, and an object thereof is to provide a compression functional member that is lightweight, inexpensive, and has high mechanical strength, and a method for manufacturing the same.
  • the method for producing a compression functional member according to the present invention comprises, in mass%, aluminum in the range of 0.2 to 15%, calcium in the range of 0.3 to 10%, based on the total amount.
  • the magnesium alloy material for extrusion has a resin-like dendrite arm interval in the range of 0.5 to 15 ⁇ m and a crystal grain size in the range of 200 ⁇ m or less.
  • the magnesium material for forging has a crystal grain size of 10 ⁇ m or less.
  • the forging in the forging step is performed at a temperature in the range of 250 to 500 ° C. for the forging magnesium material and the forging magnesium material mold.
  • the compression functional member of the present invention is based on the total amount of aluminum in the range of 0.2 to 15%, calcium in the range of 0.3 to 10%, and 0.05 to 1.5% by mass.
  • Forming a magnesium alloy material for casting containing manganese in the range of inevitable impurities, casting the magnesium alloy material for casting to form a magnesium alloy material for extrusion, and converting the magnesium alloy material for extrusion to 250 to 500 Extrusion is performed at a temperature in the range of 0 ° C. and an extrusion ratio in the range of 3 to 30 to form a magnesium material for forging, and the magnesium material for forging is formed by forging.
  • the magnesium alloy material for extrusion has a resin-like dendrite arm interval in the range of 0.5 to 15 ⁇ m and a crystal grain size in the range of 200 ⁇ m or less.
  • the magnesium material for forging has a crystal grain size of 10 ⁇ m or less.
  • the magnesium material for forging and a mold of the magnesium material for forging are forged at a temperature in the range of 250 to 500 ° C.
  • the compression function member and the manufacturing method thereof of the present invention even if it is made of a magnesium alloy without adding an expensive rare earth metal, the tensile stress of 0.2% proof stress is increased to 350 MPa or higher, which is higher than that of an aluminum alloy scroll. It is possible to manufacture a compression functional member that is lightweight, inexpensive, and has high mechanical strength.
  • FIG. 2 is a stress strain diagram comparing the scroll of FIG. 1 with a conventional aluminum alloy scroll.
  • FIG. 1 shows a scroll compressor 1 according to an embodiment of the present invention.
  • the compressor 1 is incorporated in, for example, a refrigeration circuit that constitutes an air conditioner for a vehicle, and is used to compress a refrigerant that circulates in the refrigeration circuit.
  • the compressor 1 includes a rear housing 2 and a front housing 4, and a scroll unit 6 is sandwiched between the rear housing 2 and the front housing 4.
  • the scroll unit 6 includes a fixed scroll (compression function member) 8 fixed to the rear housing 2 and a movable scroll (compression function member) 10 assembled so as to mesh with the fixed scroll 8.
  • the compressor 1 continuously executes a series of processes from suction of refrigerant to compression through discharge in the scroll unit 6.
  • an integrally molded fixed spiral body 14 is erected on the end plate 12 of the fixed scroll 8
  • an integrally molded movable spiral body 18 is erected on the end plate 16 of the movable scroll 10.
  • the inner and outer surfaces of the fixed and movable spiral bodies 14 and 18 are formed from a predetermined involute curved surface except for the central end portion thereof, and a refrigerant discharge hole 20 is formed in the vicinity of the central end portion of the fixed spiral body 14.
  • Tip seals 22 are respectively provided at the end portions of the fixed and movable spiral bodies 14 and 18 in the standing direction, and the end plates of the fixed spiral body 14 and the movable scroll 10 are associated with the revolving turning motion of the movable scroll 10 relative to the fixed scroll 8. 16 and the movable spiral body 18 and the end plate 12 of the fixed scroll 8 are in sliding contact with each other via the chip seal 22.
  • the refrigerant introduced from a suction port (not shown) formed in the front housing 4 is sucked into the scroll unit 6, and the fixed and movable spiral bodies 14 and 18 are mutually connected.
  • a compression chamber 24 of refrigerant gas containing lubricating oil is defined between the fixed and movable spiral bodies 14 and 18, and the series of the above-described series The process runs continuously.
  • both or one of the fixed scroll 6 and the movable scroll 10 according to the present embodiment is collectively referred to as a scroll (compression function member) 30, and a manufacturing process of the scroll 30 will be described with reference to a flowchart of FIG. ⁇ Alloy forming step: S1>
  • an ingot of the magnesium alloy material 32 for casting is first formed as the material of the scroll 30 in the alloy forming process of step S1.
  • the magnesium alloy raw material 32 for casting is based on the total mass, aluminum Al in the range of 0.2 to 15%, calcium Ca in the range of 0.3 to 10%, and 0.05 to 1.5%. In the range of manganese Mn and inevitable impurities.
  • the magnesium alloy material 32 for casting is cast to form the magnesium alloy material 34 for extrusion.
  • the magnesium alloy material 34 for extrusion has a resin-like crystal dendrite arm interval in the range of 0.5 to 15 ⁇ m and a crystal grain size in the range of 200 ⁇ m or less. In this way, by using the magnesium alloy material 34 for extrusion with the dendrite arm spacing of the resinous crystals in the range of 0.5 to 15 ⁇ m as the magnesium alloy material 36 for forging described later, the cracking and processing of the material during forging are suppressed. Forging processability such as lowering of temperature can be greatly improved.
  • the magnesium alloy material for extrusion 34 is extruded at a temperature in the range of 250 to 500 ° C. and the extrusion ratio is in the range of 3 to 30, so that the bar-shaped forging magnesium material 36 is formed.
  • the magnesium alloy material 36 for forging has a crystal grain size in the range of 10 ⁇ m or less.
  • the extrusion ratio is a ratio (A / B) obtained by dividing the cross-sectional area A of the material after extrusion by the cross-sectional area B of the material before extrusion.
  • crystal grain size analysis method using SEM (Scanning Electron Microscope) or backscattered electron diffraction image is used for the crystal grain size at arbitrary three locations of the sample of the magnesium alloy material 36 for forging.
  • EBSP Electron Backscattered Diffraction pattern
  • step S4 the forging magnesium alloy material 36 is forged to form the end plate and the spiral body of the scroll 30, and the manufacture of the scroll 30 is completed.
  • Forging in the forging step is performed at a temperature in the range of 250 to 500 ° C. for the magnesium alloy material 36 for forging and a mold (not shown) of the magnesium alloy material 36 for forging. It has been found that the optimum temperature range at this time is 250 to 350 ° C.
  • FIG. 3 shows tensile test pieces having the same dimensions taken from the same positions of the magnesium alloy scroll 30 manufactured in the above-described process and the conventional aluminum alloy scroll, and tensile tests performed on the respective tensile test pieces.
  • the diagram of the scroll 30 of this embodiment is shown by X
  • the diagram of the scroll made from aluminum alloy is shown by Y.
  • the scroll 30 has a 0.2% yield strength tensile stress of 350 MPa or higher, which is higher than that of the aluminum alloy scroll, and is equivalent to the aluminum alloy scroll even after the scroll 30 enters the plastic region. It turns out that it has the tensile strength more than it.
  • the tensile stress of 0.2% proof stress of the scroll 30 is higher than that of the scroll made of an aluminum alloy without adding an expensive rare earth metal such as gadolinium Gd or yttrium Y.
  • the tensile strength can be increased to 350 MPa or higher, and the tensile strength equal to or higher than that of the aluminum alloy scroll can be obtained even after the strain of the scroll 30 enters the plastic region. Accordingly, it is possible to manufacture a scroll 30 that is lightweight, inexpensive, and has high mechanical strength.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made.
  • the distortion of the scroll 39 is removed by the heat treatment, and the mechanical strength of the scroll 30 can be further increased.
  • the method for manufacturing the scroll 30 according to the above embodiment can be applied to both or either the fixed scroll 8 and the movable scroll 10.
  • the present invention is preferably applied to the manufacture of a scroll for a compressor incorporated in a refrigeration circuit using an ultra-high pressure CO 2 refrigerant operating in the critical region.
  • the invention can be applied to a scroll type fluid machine such as a scroll expander, and can be applied not only to a scroll type fluid machine but also to other compression function members such as a piston assembly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
PCT/JP2013/060714 2012-04-10 2013-04-09 Élément fonctionnel comprimé et son procédé de production Ceased WO2013154103A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-089181 2012-04-10
JP2012089181A JP6013755B2 (ja) 2012-04-10 2012-04-10 圧縮機能部材及びその製造方法

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WO2013154103A1 true WO2013154103A1 (fr) 2013-10-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109201928A (zh) * 2018-09-10 2019-01-15 浙江百达精工股份有限公司 涡旋式压缩机十字环制造方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106544608B (zh) * 2016-10-19 2018-02-09 航天材料及工艺研究所 一种特厚细晶高强韧镁合金锻件的成形方法
CN106890865B (zh) * 2017-03-23 2018-08-21 中南大学 大直径aq80m镁合金饼材挤锻集成成形工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02503331A (ja) * 1988-02-26 1990-10-11 ペシネ・エレクトロメタルルジ 機械抵抗の高いマグネシウム合金及び該合金の急速凝固による製造方法
JP2004232060A (ja) * 2003-01-31 2004-08-19 Toyota Industries Corp 鋳造用耐熱マグネシウム合金および耐熱マグネシウム合金鋳物
JP2010090405A (ja) * 2008-10-03 2010-04-22 Toyota Industries Corp 耐熱性マグネシウム合金
JP2011074461A (ja) * 2009-09-30 2011-04-14 Nagaoka Univ Of Technology マグネシウム合金圧延材並びにその製造方法
WO2012057329A1 (fr) * 2010-10-29 2012-05-03 サンデン株式会社 Élément en alliage de magnésium, compresseur destiné à être utilisé dans un conditionneur d'air et procédé de fabrication d'un élément en alliage de magnésium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02503331A (ja) * 1988-02-26 1990-10-11 ペシネ・エレクトロメタルルジ 機械抵抗の高いマグネシウム合金及び該合金の急速凝固による製造方法
JP2004232060A (ja) * 2003-01-31 2004-08-19 Toyota Industries Corp 鋳造用耐熱マグネシウム合金および耐熱マグネシウム合金鋳物
JP2010090405A (ja) * 2008-10-03 2010-04-22 Toyota Industries Corp 耐熱性マグネシウム合金
JP2011074461A (ja) * 2009-09-30 2011-04-14 Nagaoka Univ Of Technology マグネシウム合金圧延材並びにその製造方法
WO2012057329A1 (fr) * 2010-10-29 2012-05-03 サンデン株式会社 Élément en alliage de magnésium, compresseur destiné à être utilisé dans un conditionneur d'air et procédé de fabrication d'un élément en alliage de magnésium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109201928A (zh) * 2018-09-10 2019-01-15 浙江百达精工股份有限公司 涡旋式压缩机十字环制造方法
CN109201928B (zh) * 2018-09-10 2020-07-24 浙江百达精工股份有限公司 涡旋式压缩机十字环制造方法

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JP6013755B2 (ja) 2016-10-25
JP2013217308A (ja) 2013-10-24

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