CN103930579B - The manufacture method of the blade of alloy cast iron and this alloy cast iron of employing - Google Patents
The manufacture method of the blade of alloy cast iron and this alloy cast iron of employing Download PDFInfo
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- CN103930579B CN103930579B CN201280055816.3A CN201280055816A CN103930579B CN 103930579 B CN103930579 B CN 103930579B CN 201280055816 A CN201280055816 A CN 201280055816A CN 103930579 B CN103930579 B CN 103930579B
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- Prior art keywords
- cast iron
- alloy cast
- blade
- weight
- semi
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Links
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 101
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 69
- 239000000956 alloy Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 40
- 239000010439 graphite Substances 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 55
- 239000002184 metal Substances 0.000 claims description 55
- 239000010936 titanium Substances 0.000 claims description 32
- 238000000227 grinding Methods 0.000 claims description 31
- 239000011651 chromium Substances 0.000 claims description 29
- 239000011572 manganese Substances 0.000 claims description 28
- 239000010949 copper Substances 0.000 claims description 27
- 229910052796 boron Inorganic materials 0.000 claims description 23
- 229910052804 chromium Inorganic materials 0.000 claims description 23
- 229910052748 manganese Inorganic materials 0.000 claims description 22
- 229910052719 titanium Inorganic materials 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010955 niobium Substances 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 238000005266 casting Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000010791 quenching Methods 0.000 claims description 19
- 230000000171 quenching effect Effects 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 229910052717 sulfur Inorganic materials 0.000 claims description 19
- 229910052750 molybdenum Inorganic materials 0.000 claims description 18
- 229910052698 phosphorus Inorganic materials 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 17
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052758 niobium Inorganic materials 0.000 claims description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 239000011593 sulfur Substances 0.000 claims description 9
- 238000005987 sulfurization reaction Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 239000011733 molybdenum Substances 0.000 claims description 7
- 239000011574 phosphorus Substances 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 19
- 239000000047 product Substances 0.000 description 18
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 15
- 229910052580 B4C Inorganic materials 0.000 description 14
- 229910001562 pearlite Inorganic materials 0.000 description 14
- 229910052720 vanadium Inorganic materials 0.000 description 13
- 238000007906 compression Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 7
- 238000003754 machining Methods 0.000 description 7
- 238000005498 polishing Methods 0.000 description 7
- 229910000997 High-speed steel Inorganic materials 0.000 description 6
- 238000009395 breeding Methods 0.000 description 6
- 230000001488 breeding effect Effects 0.000 description 6
- 229910001567 cementite Inorganic materials 0.000 description 6
- 230000005496 eutectics Effects 0.000 description 6
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005242 forging Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 229910001060 Gray iron Inorganic materials 0.000 description 4
- 238000005087 graphitization Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000005495 investment casting Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 229910010067 TiC2 Inorganic materials 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910018540 Si C Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- -1 and in this case Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- VAKIVKMUBMZANL-UHFFFAOYSA-N iron phosphide Chemical compound P.[Fe].[Fe].[Fe] VAKIVKMUBMZANL-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 241000225517 Bario Species 0.000 description 1
- 229920002165 CarbonCast Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910001037 White iron Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- OOJQNBIDYDPHHE-UHFFFAOYSA-N barium silicon Chemical compound [Si].[Ba] OOJQNBIDYDPHHE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- VCTOKJRTAUILIH-UHFFFAOYSA-N manganese(2+);sulfide Chemical compound [S-2].[Mn+2] VCTOKJRTAUILIH-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/50—Oil baths
-
- 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
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/006—Graphite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
-
- 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
- F04C2230/21—Manufacture essentially without removing material by casting
-
- 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
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0436—Iron
- F05C2201/0439—Cast iron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to a kind of alloy cast iron, a kind of manufacture is for the method for the blade of Rotary Compressor and uses the blade for Rotary Compressor of this alloy cast iron.Alloy cast iron according to an illustrative embodiments comprises by weight 3.2～the Ti of the Mo of the Cr of the Mn of the Si of the C of 3.8%, 2.0～2.6%, 0.5～1.0%, 0.2～0.6%, 0.1～0.6%, 0.04～0.15%, the P less than 0.3%, the S less than 0.1% and the ferrum of surplus and exogenous impurity, wherein, this alloy cast iron comprises the carbide that martensitic matrix structure, flake graphite and volume ratio are 15%～30%.
Description
Technical field
The present invention relates to a kind of alloy cast iron and use the blade for Rotary Compressor of this alloy cast iron
Manufacture method.
Background technology
Generally, compressor includes that one produces driving motor and the connection driving power in casing internal space
In driving motor and the compressor (compression unit) of compression cold-producing medium.According to refrigerant compression side
Method, compressor can be divided into polytype.Such as, for the situation of Rotary Compressor, compression dress
Putting the cylinder (cylinder) including a formation compression stroke, the compression stroke of cylinder is divided into an induction chamber by one
With the blade of an exhaust chamber, multiple for support blade and the supporting part that forms compression stroke together with cylinder
Part, and one by the rotary-piston (rolling piston) being rotatably installed in cylinder.
Blade is inserted in the blade groove of cylinder, and owing to the end of blade is fixed in rotary-piston
Peripheral part and compression stroke is divided into two parts.In compression process, blade is constantly in blade groove
Slide.Here, blade should have high intensity and high-wearing feature (abrasion resistance), because it needs
To contact the cold-producing medium of high temperature and high pressure constantly, and with rotary-piston and bearing keep connection status with
Prevent leakage of refrigerant.
Particularly, the such as new refrigerant of hydrogen fluorohydrocarbon (HFC) instead of because ozone-depleting is prohibited from using
Chlorofluorocarbons (CFCs) (CFC), it has the greasy property lower than CFC, and compared with prior art demonstrates
The wearability more strengthened, this is owing to using converter (inverter) to reduce energy resource consumption but needed for blade
Want.
In order to meet these conditions, it is processed into predetermined shape more recently by by high speed steel or stainless steel, with
After carry out post processing, such as surface process etc. and manufacture blade.
Summary of the invention
Technical problem
But, these blades contain Gr, W, Mo, V, Co of the rare earth metal of promising costliness too much
Deng, and it is processed to predetermined shape by forging, thus there is poor efficiency and high price.Especially
It is that this blade has high rigidity to improve wearability, but this makes it be difficult to by forging enforcement processing
Operation.
Technical scheme
Therefore, in order to overcome the defect of prior art, an aspect of of the present present invention is to provide for one can
Improve productivity ratio and reduce manufacturing cost, meeting the intensity needed for blade and the alloy of wearability requirement simultaneously
Cast iron.
Another aspect of the present invention is to provide for the manufacture method of this blade.
In order to reach the advantage of these and other, with according to the purpose of the present invention, as embodied in this article
And be broadly described, it is provided that a kind of alloy cast iron, it comprises: by weight, 3.2～the C of 3.8%,
2.0～the Mo of the Cr of the Mn of the Si of 2.6%, 0.5～1.0%, 0.2～0.6%, 0.1～0.6%, 0.04～0.15%
Ti, the P less than 0.3%, the S less than 0.1% and the ferrum of surplus and exogenous impurity (foreign
Material), wherein, this alloy cast iron can comprise martensitic matrix structure, flake graphite and volume ratio and is
The carbide of 15%～30%.
This alloy cast iron can be added into inovulant under the motlten metal state that fusing stove takes out
(inoculant).Here, this inovulant can be bario inovulant (Fe-Si-Ba).This inovulant can be with
0.4% to the 1.0% of molten mass quality is added.
This alloy cast iron can be by the motlten metal in cooling casting mold to become horse via quenching with tempering transition
Family name's body basal body structure is formed.Here, quenching can be implemented as follows: make alloy cast iron at 860～950 DEG C
At a temperature of keep 0.5～1.5 hour, and oil this alloy cast iron cold to room temperature.Can implement as follows to be tempered:
The alloy cast iron after quenching is made to keep 0.5～1.5 hour at a temperature of 180～220 DEG C, and this alloy of air cooling
Cast iron is to room temperature.
This alloy cast iron can comprise 0.005～0.0015mm thick sulfuric horizon further.Here, sulfuration
Layer can be formed by the alloy cast iron being transformed into martensitic matrix structure is implemented ion sulfurization.
This alloy cast iron can contain the niobium (Nb) of by weight 0.01～0.5% further.
This alloy cast iron can contain the vanadium (V) of by weight 0.1～0.5% further.
This alloy cast iron can contain the boron (B) of by weight 0.06～0.01% further.
This alloy cast iron can contain the copper (Cu) of by weight 0.2～0.4% further.
According to a further aspect in the invention, it is provided that a kind of method manufacturing the blade for compressor, should
Method includes: melting step, wherein prepares motlten metal, and described motlten metal comprises by weight
3.2～the Cr of the Mn of the Si of the C of 3.8%, 2.0～2.6%, 0.5～1.0%, 0.2～0.6%, 0.1～0.6%
The Ti of Mo, 0.04～0.15%, the P less than 0.3%, S less than 0.1%, the ferrum of surplus and external miscellaneous
Matter；Casting step, wherein by motlten metal is injected in casting mold, and cooling molten metal, it is thus achieved that bag
Containing flake graphite and by volume 15～the semi-products of carbide of 30%；Grinding step, wherein will cooling
After semi-products be ground to predetermined shape；And heat treatment step, wherein the semi-products after grinding are implemented
Heat treatment makes it be transformed into martensitic matrix structure.
The method may further include and breeds step, wherein takes out motlten metal and is injected into by inovulant
In motlten metal.
Heat treatment step may include that quenching process, wherein makes the semi-products after grinding at 860～950 DEG C
At a temperature of keep 0.5～1.5 hour, and oil these semi-products cold to room temperature；And drawing process, wherein make
Semi-products after quenching keep 0.5～1.5 hour at a temperature of 180～220 DEG C, and these semi-products of air cooling are extremely
Room temperature.
The method may further include precision grinding step, and grinding is processed completely by heat treatment the most subtly
After semi-products.
The method may further include ion sulfurization step, wherein at the semi-products through complete heat treatment
Surface on formed sulfuric horizon.Here, sulfuric horizon can thickness 0.005～0.0015mm.
This alloy cast iron can contain the niobium (Nb) of by weight 0.01～0.5% further.
This alloy cast iron can contain the vanadium (V) of by weight 0.1～0.5% further.
This alloy cast iron can contain the boron (B) of by weight 0.06～0.01% further.
This alloy cast iron can contain the copper (Cu) of by weight 0.2～0.4% further.
According to another aspect of the present invention, it is provided that use that this alloy cast iron manufactures for compressor
Blade.
Invention beneficial effect
According to these aspects, the present invention with this structure can provide a kind of by means of in appropriate proportions
Element and the combination of martensitic matrix structure, flake graphite structure and carbide of mixing and can simultaneously
Improve wearability and the alloy cast iron of tensile strength.This contributes to being used for high temperature and height with low cost manufacture
Parts under pressure ring border, such as compressor blade.
Prior art meets by adding expensive rare earth element the requirement of compressor blade, can make
The rare earth element of these costlinesses is replaced to manufacture the blade for compressor with element the most at a low price, thus
Reduce the cost of raw material.
According to a further aspect in the invention, blade can be by casting rather than forging used in prior art
Make and manufacture.Therefore, it can significantly decrease post processing, and multiple blade can be produced simultaneously,
Productivity ratio is caused to be significantly increased.It addition, use alloy cast iron the most at a low price not for forging
The manufacture method of expensive high-speed steel can significantly decrease the cost of raw material.
Accompanying drawing explanation
Fig. 1 is to schematically show for testing the conjunction according to an exemplary embodiment of the present invention
The front view of the sample (test specimen) of the tensile strength of gold cast iron；With
Fig. 2 to Figure 12 is by catching the 1st to the 11st illustrative embodiments according to the present invention
The surface texture of alloy cast iron and the enlarged photograph that obtains.
Detailed description of the invention
Will be described in detail with reference to accompanying drawings now illustrative embodiments.For the mesh combining Brief Description Of Drawings
, identical or equivalent parts will be endowed like number, and descriptions thereof is not repeated.
Generally, cast iron has the high-wearing feature such as brought and good machining because of its high rigidity
The performance of property (machinability).But, cast iron has low tensile strength and high fragility, and therefore, it is not
It is suitable as very much being exposed to the parts of high-pressure atmosphere.Particularly, the blade for compressor needs have ratio
The higher wearability of prior art, because it is not only exposed to high-pressure atmosphere and adjacent being closely coupled to
Assembly is to slide in the case of preventing the leakage of refrigerant compressed.The invention provides a kind of alloy cast iron,
Its by with various elements contained in suitable content hybrid alloys cast iron so that tensile strength and wearability
It is increased to be enough to be used in various purpose be fabricated by.Hereafter, each element will be described.Here,
If not otherwise specified, each content is by weight ratio.
(1) carbon (C): 3.2～3.8%
Carbon in cast iron is to exist with graphite or the carbide form that represents with Fe3C.Therefore, carbon is worked as
When content is low, most carbon presented in carbide, so, it is impossible to observe lamellar well
Graphite-structure.More precisely, when C content is 1.7～2.0%, graphite is net distribution, when C contains
When amount is 2.0～2.6%, show as crystalline graphite, when C content is 2.6%～3.5%, be usually expressed as
Thin graphite flake, and when C content is higher than 3.5%, show as coarse thick graphite flake.Work as alloy cast iron
In carbon content be limited at 2.7～3.8% scope time, carbon generally with flake graphite structure exist.For
High-carbon cast iron, its metal structure contains ferrite (ferrite) and coarse thick graphite flake, and has relatively
High mechanical strength and hardness, but if carbon content is too high, then its mechanical performance can reduce.
Therefore, the addition of carbon may obtain overall uniform flake graphite structure more than 3.2%.Meanwhile,
High carbon content reduces freezing point.This contributes to improving casting character (castability).But, graphite
Sedimentary amount exceedingly increases, thus increases fragility and the harmful effect to tensile strength.That is, carbon is worked as
When saturation (Cs) is about 0.8 to 0.9, it is possible to obtain the highest tensile strength.Therefore, by carbon content
Threshold limit value is set to 3.8% can obtain satisfied tensile strength.
(2) silicon (Si): 2.0～2.6%
Silicon is used for decomposing carbide to obtain aquadag thing as graphitizer (graphitizer).That is, silicon
Interpolation the effect that such as carbon content increases can be provided.Additionally, silicon is for making the stone being present in cast iron
Ink microstructure is grown to serve as flake graphite structure.Generally, when Si-C content is low, it is thus achieved that relatively high
Mechanical strength and hardness, but mobility is relatively low.On the contrary, when Si-C content height, mobility is high but machine
Tool intensity and hardness are low.
But, when adding substantial amounts of silicon, also can play by strengthening the basal body structure of (strengthening) cast iron
Increase the effect of tensile strength.That is, strengthen the effect of basal body structure owing to using high silicon content to have, increase
The Si/C added can reduce the amount of graphite and improve tensile strength.This is when breeding of motlten metal of enforcement
Can be clearly observed.For this angle, silicone content is decided to be the model between 2.0～2.6%
In enclosing.
(3) manganese (Mn): 0.5～1.0%
Manganese is the unit of the formation of graphited spoken parts in traditional operas ((carbidic) of the carbide) cast iron promoting interference carbon
Element, and for stable bond carbon (that is, cementite).Further, manganese disturbs ferritic precipitation and refines
(refine) pearlite, in order to play a role when the basal body structure of cast iron is transformed into pearlite.Particularly,
Manganese is combined formation Manganese monosulfide. by the sulfur in cast iron.Manganese monosulfide. floats to the surface of motlten metal using as molten
Slag is removed, or is retained in cast iron to prevent the formation of iron sulfide as non-metallic inclusion after solidification.
That is, manganese also is used as the element of toxicity (detoxifies) of sulphur removal.
As it has been described above, manganese is stable and refinement pearlite.Here, along with the increase of Fe content, cast iron strong
Degree and hardness increase and plasticity and toughness reduce.It addition, the transformation that manganese can significantly reduce martensite rises
Initial point (Ms).But, when adding substantial amounts of manganese, it forms carbide, therefore increases fragility and shadow
Ring the mechanical performance of alloy cast iron.
Further, when Fe content is suitable, manganese does not have big impact to the structure of cast iron.Therefore,
For promoting formation and the desulfurization of pearlite, Fe content is decided to be in the range of 0.5～1.0%.
(4) chromium (Cr): 0.2～0.6%
Chromium is to promote carbide to be formed and disturb the graphited element of carbon.When chromium is added in a large number,
It forms white cast-iron and exceedingly increases hardness, causes machining property to reduce.On the contrary, chromium
Stable carbide and contribute to increase thermostability.Chromium is also that in preventing cast iron, ferrite is formed, shortens pearl
Distance between body of light lamella and the element of promotion pearlite formation.Chromium also improves and stabilizing pearlite
Amount, and refine pearlitic texture.But, when chromium too high levels, too much cementite can be formed,
This may cause the formation of chill (chilled) structure.
Therefore, can add 0.2～the chromium of 0.6%, more preferably 0.1～0.3% chromium to improve mechanical performance and
Thermostability.
(5) molybdenum (Mo): 0.1～0.6%
When its content is less than 0.6%, molybdenum stable carbide also refines pearlite and graphite.When adding molybdenum,
The amount of phosphorus (P) should be lowered.Otherwise, P-Mo quaternary eutectic (P～Mo quaternary eutectic) can be formed
And fragility increases.Meanwhile, molybdenum improves the uniformity of section structure, improves such as intensity, hardness, impact
Intensity, fatigue strength and the performance of high temperature (less than 550 DEG C), reduce contractility, and improve heat-treatability
Energy and quenching property.According to these performances, molybdenum content is decided to be in the range of 0.1～0.6%, more
In the range of preferably 0.4～0.6%.
(6) vanadium (V): 0.1～0.5%
Vanadium is also used for refining pearlitic texture and graphite, and easily forms carbide and nitridation in cast iron
Thing, and allow carbide and nitride the most dispersed.This makes whole cast iron
Obtain uniform performance.It addition, vanadium will not reduce the machining property of cast iron, the most also improve cast iron
Hardness and tensile strength.Particularly, vanadium has well impact to wearability, but if containing excess
Vanadium, cast iron is chill.Therefore, the content of vanadium be decided to be between 0.1～0.5% vanadium, preferably 0.2～0.4%
In the range of.
(7) boron (B): 0.06%～0.01%
Boron refines graphite but for reducing the amount of graphite and promoting the formation of carbide.Particularly, interpolation is worked as
During a small amount of boron, boron precipitates with the state of boron carbide.Boron carbide significantly increases the hardness of cast iron and wear-resisting
Property.Particularly, boron carbide is formed netted.When adding a small amount of boron, boron carbide forms discontinuous net,
But when adding the boron of excess, forming continuous print net, this causes mechanical performance to reduce.
When being added in cast iron by boron, need to consider the relation between Si and B.In general, if
Si/B < 80, boron carbide can precipitate in cast iron；If 80 < Si/B < 130, a small amount of boron carbide is permissible
Precipitation；If Si/B > 130, then boron carbide is not had to precipitate.See in one embodiment of the invention
Observe as Si/B=36.6, there is relatively great amount of boron carbide, and in this case, cast iron table
Reveal the strongest wearability.
When the alloy cast iron of boracic is corroded, have the boron carbide of high rigidity formed the first slidingsurface with
Support load, and the pearlite etc. with relatively low hardness is corroded with dished second slidingsurface of shape.
Groove between first slidingsurface and the second slidingsurface is for oil in reserve wherein.This is so that lubricate
Oil is continuously fed to boron carbide, thus reduces the degree of corrosion and improves the wear-resisting of boron cast iron
Property.Meanwhile, when Boron contents increases, boron carbide also increases.This correspondingly improves the support of boron carbide
Operation, so that the pressure put on the first slidingsurface reduced on per unit area, thus reduces abrasion
Degree and therefore improve wearability.
But, when Boron contents is the highest, the diameter of boron carbide increases, and therefore weakens and basal body structure
Bonding force (coupling force).Correspondingly, when applying frictional force, boron carbide is easy to be separated.
The boron carbide separated is used as the hard abrasive grains on friction surface, exacerbates the abrasion of cast iron.Further,
In this case, the hardness of cast iron excessively increases, and causes machining property to be lowered.In view of this
A little performances, the content of boron is decided to be in the range of 0.02～0.1%.
(8) titanium (Ti): 0.04～0.15%
Titanium refinement graphite, accelerates the formation of pearlite, and improves the high-temperature stability of pearlite.When titanium
When content is relatively low, it promotes graphitization and improves the distribution of graphite and the shape of cast iron.But, along with
The increase of content, titanium is deposited near grain boundary with the form of the compound of such as TiN, TiC etc.,
Become the solidification core of austenite matrix.This causes hardness of cast to increase, and reduces the machine of cast iron simultaneously
Tool processability.For relatively low content, titanium (Ti) promotes graphitization, and increases grey cast-iron structure
Ferritic amount is to reduce hardness.Conversely, for high-load, titanium refinement cast iron crystal, and strengthening (enhancing)
Alloy structure.Simultaneously as the precipitation that TiC2 is on grain boundary, the hardness of grey cast-iron is further
Increase.
Ti is a kind of alloying element for manufacturing D-type Graphite Iron Cast.D-type Graphite Iron Cast, with those
A-type Graphite Iron Cast is compared, and has higher hardness and wearability.When the content of Ti is less than 0.1%,
Ti is partly melted in ferrite, and mainly precipitates with the form of TiC2 or TiN.Correspondingly, Ti
Make the abundant deoxidation of motlten metal and denitrogenation.Meanwhile, it is too cold process (undercooled) as TiC2 or TiN
Time, A-type graphite attenuates and D-type graphite occurs.Further, due to relatively high content of graphite and ferrum element
Body burden, defines the structure of A and D mixing, reduces intensity and the hardness of grey cast-iron simultaneously.
When Ti content is higher than 0.1%, Ti can increase the intensity of D-type graphite and make the amount of D-type graphite
More than 95%.Meanwhile, the Ti that relatively low content of graphite and ferrite content increase are melted in ferrite
Amount, and ferrite is reinforced thus increases intensity and the hardness of grey cast-iron.Therefore, in order to obtain
D-type content of graphite also improves machining property, and Ti content is decided to be in the range of 0.04～0.15%.
(9) niobium (Nb): 0.01～0.5%
Niobium further fining metal crystal and make even structure.Particularly, when Nb content is less than 0.5%
Time, niobium forms the phase rich in Nb of banding, in order to refine graphite further, increases the high temperature knot of alloy
Structure stability, and increase P eutectic hardness.Here, when content of niobium is more than 0.5%, its formation cube
The phase rich in Nb of the bodily form thus reduce mechanical performance.Therefore, content of niobium is decided to be between 0.01～0.5%
In the range of.
(10) copper (Cu): 0.2～0.4%
Copper makes the shape of graphite become thick and short, and copper is to reduce D-type and E-type undercooled graphite and promotion
The element that A-type flake graphite is formed.And, copper has an excellent function improving graphite shape, and
Prevent graphitization during eutectic and reduce chill (chilling) of cast iron.It addition, copper improves carbide
Distribution, forms pearlite and refinement structure.
Further, copper refines pearly-lustre by the distance promoting pearlite to be formed and to shorten between pearlite
Body.Copper improves casting character also by the mobility increasing motlten metal, thus reduces residual stress
(residual stress)。
Additionally, copper makes structure refinement and slightly improves the tensile strength of cast iron, hardness etc..Work as carbon content
When being about 0.3%, hence it is evident that show these effects, and when adding the chromium of 0.3～0.5%, it is expected to performance
Go out more preferable effect.Therefore, as above-mentioned, copper content is decided to be in the range of 0.2～0.4%.
(11) phosphorus (P): less than 0.3%
Phosphorus forms iron phosphide (Fe3P) compound thus with ternary eutectic Si Shi together with ferrite and cementite
Body (ternary eutectic steadite) exists.Iron phosphide is easily too cold process and easily causes when casting
Segregation (segregation).Therefore, along with the increase of phosphorus content, fragility increases and tensile strength drops sharp
Low.Therefore, phosphorus content is decided to be less than 0.3%.
(12) sulfur (S): less than 0.1%
When adding substantial amounts of sulfur, the mobility of motlten metal reduces, and the contractility of alloy cast iron increases,
And likely can cause the formation in cavity or crack.Therefore, sulfur content is the fewest.Here,
When sulfur content is less than 0.1%, these deleterious effects that sulfur brings will not be it is obvious that it is thus desirable to control
Within sulfur content is maintained at this content.
The alloy cast iron of the present invention can have the element of these performances by mixing and produce, for system
Make the blade of compressor.Hereinafter, the technique manufacturing the blade being used for compressor will be illustrated,
Described blade is made up of this alloy cast iron.
(1) melting (Smelting)
Aforementioned elements is mixed in appropriate proportions and prepares raw material.Raw material is inserted an intermediate frequency furnace
In, heating, until being completely melt, then, is smelted into motlten metal.Here, from stove, melted gold is taken out
The temperature belonged to is about in the range of 1500 DEG C to 1550 DEG C.
(2) (Inoculation) is bred
Inovulant is injected in melting step in the motlten metal of melting.Breed the many graphite nuclei of generation
The heart is to promote graphitization, and contributes to being uniformly distributed and the increase of intensity of graphite.Here, barium silicon
Ferroalloy (FeSi72Ba2) is used as inovulant and its content can be molten metal mass
0.4～1.0%.
(3) casting (Casting)
The motlten metal bred in breeding step is injected in a prefabricated casting mold, to be formed, there is required shape
The cavity of shape.Here, casting is the shell mould casting using and employing coated sand (resin-coated sand)
Make technique or investment casting process (investment mold process) implements.The semi-products blade of cooling contains
There are flake graphite and carbide, and the content of this carbide can account for the 15%～30% of blade cumulative volume.
Here, this carbide shows that the component increased is incorporated on carbon.One example of carbide can include
Fe3C (so-called cementite) etc..
(4) grinding (Grinding)
Shape needed for the semi-products blade grinding obtained from casting step is become.
(5) heat treatment (Heat treating)
Heat treatment can include quenching process and drawing process.
-quenching (Quenching): use and can control the resistance furnace of air themperature by the semi-products after grinding
Blade is heated to 860～950 DEG C, and is maintained at this state and assigns 0.5～1.5 hour.By half after heating
Goods blade is put in temperature oil in the range of 10～30 DEG C rapidly to be cooled to room temperature.Quenching
So that pearlite matrix structural transformation becomes martensitic matrix structure, thus improve hardness.That is, when quenching
After fire completes, obtain the blade containing martensitic matrix structure, carbide and flake graphite.
-tempering (Tempering): use and can control the resistance furnace of air themperature and will be obtained by quenching
Blade containing carbide and the martensitic cast iron of flake graphite is heated to 180～220 DEG C, and is maintained at
This state assigns 0.5～1.5 hour.By the blade air cooling after heating to room temperature, slightly to reduce by quenching
The intensity of fire increase and hardness, and increase ductility.This causes reducing fragility.
(6) fine grinding (Fine Grinding) and polishing (Polishing)
By the fine grinding of the cast iron vanes containing carbide obtained by quenching and the tempering of heat treatment and polishing
It is processed into and there is final shape and required surface quality.
(7) ion sulfurization (Ion-Sulfurizing) (sulfuration (sulphurizing))
The carbide cast iron blade obtained through fine grinding and polishing is carried out ion sulfurization, with the surface at blade
The upper sulfuric horizon forming thickness 0.005～0.015mm.This sulfuric horizon can be with lamellar stone present in blade
Ink works together, and improves lubricity and wearability that blade self is had further.
Embodiment 1
Embodiment 1 is manufactured by following method.
Preparing raw material, described raw material comprises following element by weight, i.e. C:3.4%, Si:
2.2%, Mn:0.7%, Cr:0.4%, Mo:0.4%, V:0.3%, B:0.06%, Ti:0.1%,
Nb:0.25%, Cu:0.25%, P < 0.3%, S < 0.1% and the ferrum of surplus.Raw material by preparation
Put in an intermediate frequency furnace, raise its temperature until raw material is fully melted with by alloy cast iron
It is smelted into motlten metal.From stove, the motlten metal of alloy cast iron is taken out at a temperature of 1525 DEG C.
The motlten metal of the alloy cast iron taken out from stove after smelting is carried out pregnant by injecting inovulant
Educate.Here, inovulant is ferrous alloy containing barium and silicon, i.e. FeSi72Ba2, and its content is motlten metal matter
The 0.7% of amount.
The alloy cast iron that carries out in a previous step breeding is cast by shell mold process or investment casting process
Motlten metal, it is thus achieved that containing flake graphite and the blade of the Lanzcast iron of carbide.Here, carbide
Content is the 25% of blade cumulative volume.
Shape needed for the blade grinding obtained is become.
Then, blade is heated to 910 DEG C and keeps 0.7 hour at the same temperature.After heating
Blade is put in the oil of 20 DEG C, is then cooled to room temperature, thus basal body structure is transformed into martensitic structure.
The blade obtained by quenching being heated to 210 DEG C, keeps 0.7 hour, then air cooling is to room temperature.
Therefore the semi-products blade that obtains, through fine grinding and polishing, carries out ion sulfurization subsequently, thus
The sulfuric horizon of thick 0.008mm is formed on the surface of blade.
Embodiment 2
Following element by weight will be comprised, i.e. C:3.2%, Si:2.0%, Mn:0.5%, Cr:
0.2%, < raw material of the ferrum of 0.3%, S < 0.1% and surplus is fused into for Mo:0.1%, Ti:0.04%, P
Motlten metal.Then at a temperature of 1500 DEG C, take out this motlten metal.Using FeSi72Ba2 as breeding
Agent is added in motlten metal with the amount of the 0.4% of molten metal mass.Then, shell mold process is passed through
Or investment casting process casts the motlten metal after breeding, it is derived from wherein containing the carbonization that volume ratio is 15%
The semi-products blade of thing.
After this semi-products blade of grinding, the semi-products blade of grinding is heated to 860 DEG C, in phase equality of temperature
Degree is lower to be kept 0.5 hour, puts in the oil of 10 DEG C to be cooled to room temperature, is thus converted into martensitic structure.
The semi-products blade with martensitic structure is heated to 180 DEG C, and holding 0.5 is little at that same temperature
Time, then air cooling is to room temperature.Blade after air cooling passes sequentially through fine grinding, polishing and ion sulfurization carry out
Processing, the sulfuric horizon thick to form a 0.005mm on the surface of blade.
Embodiment 3
Following element by weight will be comprised, i.e. C:3.8%, Si:2.6%, Mn:1.0%, Cr:
0.6%, Mo:0.6%, V:0.5%, B:0.1%, Ti:0.15%, Nb:0.5%, Cu:0.5%,
P < 0.3%, S < 0.1% and the raw material of ferrum of surplus be fused into motlten metal.Then the temperature of 1550 DEG C
Degree is lower takes out this motlten metal.The FeSi72Ba2 as inovulant is added using the 0.1% of molten metal mass.
Then, the motlten metal after breeding is cast by shell mold process or investment casting process, to contain
Volume ratio is equivalent to the carbide of the 30% of semi-products blade, thus is ground to required shape.
Blade after grinding is heated to 950 DEG C, and keeps 1.5 hours.Blade after heating is put into
To be cooled to room temperature in the oil of 30 DEG C, it is derived from containing martensitic matrix structure, carbide and lamellar stone
The blade of ink.The blade of acquisition being heated to 220 DEG C, keeps 1.5 hours, then air cooling is to room temperature, by
This reduces fragility.Hereafter, implement fine grinding and the polishing net shape with acquisition blade, and implement ion
Sulfurizing is to form the sulfuric horizon of thick 0.015mm on the surface of blade.
Embodiment 4
According to embodiment 4, C:3.3%, Si:2.1%, Mn:0.6%, Cr by weight will be comprised:
0.3%, Mo:0.2%, V:0.2%, B:0.02%, Ti:0.05%, P < 0.3%, S < 0.1% and remaining
The raw material of the ferrum of amount is fused into motlten metal.This motlten metal is taken out at a temperature of 1515 DEG C.Other
Step is identical with embodiment 1.
Embodiment 5
According to embodiment 5, C:3.3%, Si:2.2%, Mn:0.7%, Cr by weight will be comprised:
0.4%, Mo:0.3%, V:0.2%, Ti:0.04～0.15%, Nb:0.1%, P < 0.3%, S < 0.1%
It is fused into motlten metal with the raw material of the ferrum of surplus.This motlten metal is taken out at a temperature of 1510 DEG C.
Other steps are identical with embodiment 1.
Embodiment 6
According to embodiment 6, C:3.4%, Si:2.3%, Mn:0.8%, Cr by weight will be comprised:
0.4%, Mo:0.3%, V:0.3%, Ti:0.06%, Cu:0.2%, P < 0.3%, S < 0.1% and remaining
The raw material of the ferrum of amount is fused into motlten metal.This motlten metal is taken out at a temperature of 1520 DEG C.Other
Step is identical with embodiment 1.
Embodiment 7
According to embodiment 7, C:3.6%, Si:2.4%, Mn:0.9%, Cr by weight will be comprised:
0.5%, Mo:0.5%, B:0.05%, Ti:0.12%, Cu:0.3%, P < 0.3%, S < 0.1% and
The raw material of the ferrum of surplus is fused into motlten metal.This motlten metal is taken out at a temperature of 1530 DEG C.Its
His step is identical with embodiment 1.
Embodiment 8
According to embodiment 8, C:3.3%, Si:2.2%, Mn:0.7%, Cr by weight will be comprised:
0.4%, Mo:0.3%, Ti:0.04～0.15%, Nb:0.1%, P < 0.3%, S < 0.1% and surplus
The raw material of ferrum is fused into motlten metal.This motlten metal is taken out at a temperature of 1510 DEG C.Other steps
Identical with embodiment 2.
Embodiment 9
According to embodiment 9, C:3.4%, Si:2.3%, Mn:0.8%, Cr by weight will be comprised:
0.4%, Mo:0.3%, Ti:0.06%, Cu:0.2%, P < ferrum of 0.3%, S < 0.1% and surplus
Raw material is fused into motlten metal.This motlten metal is taken out at a temperature of 1520 DEG C.Other steps and reality
That executes in example 2 is identical.
Embodiment 10
According to embodiment 10, by comprise C:3.4% by weight, Si:2.2%, Mn:0.7%,
Cr:0.4%, Mo:0.4%, V:0.3%, B:0.06%, Ti:0.1%, Cu:0.25%, P < 0.3%,
The raw material of the ferrum of S < 0.1% and surplus is fused into motlten metal.At a temperature of 1535 DEG C, take out this melt
Metal.Other steps are identical with embodiment 3.
Embodiment 11
According to embodiment 11, by comprise C:3.8% by weight, Si:2.6%, Mn:1.0%,
Cr:0.6%, Mo:0.6%, B:0.1%, Ti:0.15%, Nb:0.5%, Cu:0.5%, P < 0.3%,
The raw material of the ferrum of S < 0.1% and surplus is fused into motlten metal.At a temperature of 1545 DEG C, take out this melt
Metal.Other steps are identical with embodiment 3.
The data of above-described embodiment are shown in Table 1.
Table 1
[table 1]
| C | Si | Mn | Cr | Mo | V | B | Ti | Nb | Cu | P | S | |
| 1 | 3.4 | 2.2 | 0.7 | 0.4 | 0.4 | 0.3 | 0.06 | 0.1 | 0.25 | 0.25 | <0.3 | <0.1 |
| 2 | 3.2 | 2.0 | 0.5 | 0.2 | 0.1 | 0.04 | <0.3 | <0.1 | ||||
| 3 | 3.8 | 2.6 | 1.0 | 0.6 | 0.6 | 0.5 | 0.1 | 0.15 | 0.5 | 0.5 | <0.3 | <0.1 |
| 4 | 3.3 | 2.1 | 0.6 | 0.3 | 0.2 | 0.2 | 0.02 | 0.05 | <0.3 | <0.1 | ||
| 5 | 3.3 | 2.2 | 0.7 | 0.4 | 0.3 | 0.2 | 0.04 | 0.1 | <0.3 | <0.1 | ||
| 6 | 3.4 | 2.3 | 0.8 | 0.4 | 0.3 | 0.3 | 0.06 | 0.2 | <0.3 | <0.1 | ||
| 7 | 3.6 | 2.4 | 0.9 | 0.5 | 0.5 | 0.05 | 0.12 | 0.3 | <0.3 | <0.1 | ||
| 8 | 3.3 | 2.2 | 0.7 | 0.4 | 0.3 | 0.04 | 0.1 | <0.3 | <0.1 | |||
| 9 | 3.4 | 2.3 | 0.8 | 0.4 | 0.3 | 0.06 | 0.2 | <0.3 | <0.1 | |||
| 10 | 3.4 | 2.2 | 0.7 | 0.4 | 0.4 | 0.3 | 0.06 | 0.1 | 0.25 | <0.3 | <0.1 | |
| 11 | 3.8 | 2.6 | 1.0 | 0.6 | 0.6 | 0.1 | 0.15 | 0.5 | 0.5 | <0.3 | <0.1 |
Additionally, for the sample of complete heat treatment, also embodied in use HR～150A type Rockwell apparatus
The hardness test of (Rockwell hardometer).Determining two up and down of the hand-hole adjacent to casting liquid
Point, away from casting two points up and down of hand-hole of liquid and a point between them as test position
After putting, these five points are carried out hardness test.
Each test sample with shape shown in Fig. 1 is by using the raw material identical with each embodiment
Make, and measure their tensile strength.Test result is shown in table 2 below.
Table 2
[table 2]
And, table 3 below shows machining property and the survey of abrasiveness (abradability) of these embodiments
Test result.
Table 3
[table 3]
Further, for Grindability (grinding workability), the grinding load of this alloy cast iron can
Being equivalent to the 75% of high-speed steel, often finishing (dressing) grinding stone (grinding stone) can be with grinding
800 blades.It will therefore be appreciated that it is compared with high-speed steel, grinding performance significantly improves.
Further, use the blade of high-speed steel, because using forging rather than casting, there is poor efficiency, and
The blade of the present invention can be manufactured by casting thus have the machining property of relative good, the most also has
There is the wearability similar to high-speed steel.Therefore, productivity ratio and the manufacturing cost of the blade of the present invention can show
Write ground to reduce.
Above-mentioned detailed description of the invention and advantage are merely exemplary, and are not necessarily to be construed as the present invention
Restriction.The teachings of the present invention can be readily applied to other kinds of device.This specification is explanation
Property, and it is not intended to the scope of claim.Many alternative, revise and deform, for ability
It is apparent from for field technique personnel.The feature of illustrative embodiments described herein, structure,
Method and other characteristics can combine in many ways thus obtain other and/or the exemplary reality that substitutes
Execute mode.
Due to inventive feature, in the case of without departing substantially from its speciality, can embody in a variety of forms,
It should also be understood that except as otherwise noted, above-mentioned embodiment is not limited by any details above,
And should be construed broadly in the range of appended claims limits, therefore fall into claim
Boundary and scope in all changes and the equivalent way of amendment or this boundary and scope should be by appended power
Profit claim is contained.
Claims (11)
1. include that a Rotary Compressor for blade, described blade are made up of alloy cast iron, wherein by weight
Gauge, described alloy cast iron consists of the following composition:
3.2～the carbon (C) of 3.8%；
2.0～the silicon (Si) of 2.6%；
0.5～the manganese (Mn) of 1.0%；
0.2～the chromium (Cr) of 0.6%；
0.1～the molybdenum (Mo) of 0.6%；
0.04～the titanium (Ti) of 0.15%；
Phosphorus (P) less than 0.3%；
Sulfur (S) less than 0.1%；With
The ferrum (Fe) of surplus and exogenous impurity,
Wherein, this alloy cast iron comprises martensitic matrix structure, flake graphite and volume ratio is 15～30%
Carbide,
The wherein described alloy cast iron of following formation: the motlten metal in cooling casting mold is with via quenching and tempering
It is transformed into martensitic matrix structure,
The wherein described quenching of following enforcement: make alloy cast iron keep 0.5～1.5 at a temperature of 860～950 DEG C
Hour, and oil this alloy cast iron cold is to room temperature,
The wherein described tempering of following enforcement: make the alloy cast iron after quenching protect at a temperature of 180～220 DEG C
Hold 0.5～1.5 hour, and this alloy cast iron of air cooling be to room temperature,
Wherein said alloy cast iron comprises the sulfuric horizon that thickness is 0.005～0.015mm further.
Rotary Compressor the most according to claim 1, wherein said alloy cast iron comprises further
The inovulant added under the motlten metal state taken out from fusing stove, and
Wherein, the addition of described inovulant is the 0.4～1.0% of molten mass quality.
Rotary Compressor the most according to claim 1, wherein, described alloy cast iron wraps further
Containing by weight 0.01～the niobium (Nb) of 0.5%, and
Described alloy cast iron comprises the vanadium (V) of by weight 0.1～0.5% further.
Rotary Compressor the most according to claim 1, wherein, described alloy cast iron wraps further
Containing by weight 0.06～the boron (B) of 0.1%.
Rotary Compressor the most according to claim 1, wherein, described alloy cast iron wraps further
Containing by weight 0.2～the copper (Cu) of 0.4%.
6. the method manufacturing the blade for compressor, described blade is made up of alloy cast iron, the party
Method includes:
Melting step, wherein prepare comprise by weight 3.2～3.8% carbon (C), 2.0～2.6% silicon (Si),
0.5～molybdenum (Mo), 0.04～the titanium of 0.15% of chromium (Cr), 0.1～0.6% of manganese (Mn), 0.2～0.6% of 1.0%
(Ti), the phosphorus (P) less than 0.3%, the sulfur (S) less than 0.1% and the ferrum (Fe) of surplus and exogenous impurity is molten
Melt metal；
Casting step, wherein injects this motlten metal in casting mold, and cools down this motlten metal, it is thus achieved that bag
Containing flake graphite and by volume 15～the semi-products of carbide of 30%；
Semi-products after cooling are wherein ground to predetermined shape by grinding step；With
Semi-products after grinding are wherein implemented heat treatment so that it is transformed into martensite base by heat treatment step
Body structure,
Wherein said heat treatment step includes:
Quenching process, wherein makes the semi-products after grinding keep 0.5～1.5 little at a temperature of 860～950 DEG C
Time, and oil these semi-products cold are to room temperature；With
Drawing process, wherein makes the semi-products after quenching keep 0.5～1.5 little at a temperature of 180～220 DEG C
Time, and these semi-products of air cooling are to room temperature,
Wherein the method farther includes ion sulfurization step, wherein the semi-products after complete heat treatment
Forming sulfuric horizon on surface, this sulfuric horizon has the thickness of 0.005～0.015mm.
Method the most according to claim 6, the method farther includes to breed step, wherein by pregnant
Educate agent to be injected in the motlten metal taken out from fusing stove.
8., according to the method described in claim 6 or 7, the method farther includes precision grinding step, wherein
Semi-products after the complete heat treatment of grinding subtly.
9. according to the method described in claim 6 or 7, wherein, described alloy cast iron comprise further by
Weight meter 0.01～the niobium (Nb) of 0.5%, and
Wherein, described alloy cast iron comprises the vanadium (V) of by weight 0.1～0.5% further.
Method the most according to claim 6, wherein, described alloy cast iron comprises further by weight
Gauge 0.06～the boron (B) of 0.1%, and
Wherein, described alloy cast iron comprises the copper (Cu) of by weight 0.2～0.4% further.
11. methods according to claim 8, wherein, described alloy cast iron comprises further by weight
Gauge 0.06～the boron (B) of 0.1%, and
Wherein, described alloy cast iron comprises the copper (Cu) of by weight 0.2～0.4% further.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0118378 | 2011-11-14 | ||
| KR1020110118378A KR101409877B1 (en) | 2011-11-14 | 2011-11-14 | Alloy cast iron and manufacturing method of vane using the same |
| PCT/KR2012/009571 WO2013073817A1 (en) | 2011-11-14 | 2012-11-14 | Alloy cast iron and manufacturing method of vane using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103930579A CN103930579A (en) | 2014-07-16 |
| CN103930579B true CN103930579B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280055816.3A Expired - Fee Related CN103930579B (en) | 2011-11-14 | 2012-11-14 | The manufacture method of the blade of alloy cast iron and this alloy cast iron of employing |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20130118651A1 (en) |
| EP (1) | EP2780486B1 (en) |
| JP (1) | JP5926396B2 (en) |
| KR (1) | KR101409877B1 (en) |
| CN (1) | CN103930579B (en) |
| AU (1) | AU2012337617B2 (en) |
| WO (1) | WO2013073817A1 (en) |
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| KR102060468B1 (en) | 2013-03-08 | 2019-12-30 | 엘지전자 주식회사 | Vane pump |
| KR20140110621A (en) * | 2013-03-08 | 2014-09-17 | 엘지전자 주식회사 | Compacted graphite cast iron for orbital or fixed scroll and manufacturing method of orbital or fixed scroll using the same |
| CN104745915B (en) * | 2015-02-06 | 2016-08-03 | 北京工业大学 | Containing vanadium and chromium antifriction alloy and preparation method thereof |
| CN107119221B (en) * | 2017-04-26 | 2018-08-07 | 含山县朝霞铸造有限公司 | A kind of micro alloyed high strength grey cast iron part and its method of smelting |
| CN108754300A (en) * | 2018-07-03 | 2018-11-06 | 宁波力古机械制造有限公司 | A kind of nuclear power position end cap QT500-7 casting and its casting method |
| JP6963576B2 (en) * | 2019-02-01 | 2021-11-10 | Ｔｐｒ株式会社 | Cast iron member, method for manufacturing composite member including cast iron member and cast iron member |
| CN110184424A (en) * | 2019-06-06 | 2019-08-30 | 宁波甬微集团有限公司 | A kind of processing method of rotor-type compressor slide plate |
| KR102090743B1 (en) | 2019-08-28 | 2020-03-18 | 주식회사 비와이인더스트리 | High chrome cast iron alloy with excellent wear resistance and manufacturing method thereof |
| KR102328658B1 (en) * | 2019-10-04 | 2021-11-18 | (주)창영하드메탈 | Chromium alloy for cast iron plate and preparing method thereof |
| CN114000043B (en) * | 2021-10-27 | 2023-12-01 | 襄阳金耐特机械股份有限公司 | Ductile cast iron with high plastic toughness and fatigue resistance and manufacturing method thereof |
| CN114277293B (en) * | 2021-12-30 | 2022-07-26 | 山西汤荣机械制造股份有限公司 | Lightweight composite brake disc and preparation method thereof |
| CN114351038A (en) * | 2022-01-13 | 2022-04-15 | 宜宾普什联动科技有限公司 | High-strength medium-heat-resistant alloy cast iron smelted by electric furnace and smelting method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2780486A1 (en) | 2014-09-24 |
| EP2780486B1 (en) | 2018-01-03 |
| KR20130052977A (en) | 2013-05-23 |
| CN103930579A (en) | 2014-07-16 |
| WO2013073817A1 (en) | 2013-05-23 |
| US20130118651A1 (en) | 2013-05-16 |
| JP2015504481A (en) | 2015-02-12 |
| AU2012337617B2 (en) | 2015-10-01 |
| JP5926396B2 (en) | 2016-05-25 |
| EP2780486A4 (en) | 2015-11-18 |
| KR101409877B1 (en) | 2014-06-20 |
| AU2012337617A1 (en) | 2014-05-22 |
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