CN103534458A - Turbocharger and component therefor - Google Patents
Turbocharger and component therefor Download PDFInfo
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- CN103534458A CN103534458A CN201280022878.4A CN201280022878A CN103534458A CN 103534458 A CN103534458 A CN 103534458A CN 201280022878 A CN201280022878 A CN 201280022878A CN 103534458 A CN103534458 A CN 103534458A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
- F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/13—Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
Abstract
What is described is a component for turbocharger applications, in particular in diesel engines, which consists of an iron-based alloy having a ferritic base structure which comprises a carbide and a nitride structure.
Description
Specification
The present invention relates to a kind of parts for turbocharger applications according to the preamble of claim 1, particularly in diesel engine, and relate to a kind of exhaust turbine supercharger that comprises parts according to the preamble of claim 7.
Exhaust turbine supercharger is intended to improve the system of reciprocating engine power.In exhaust turbine supercharger, the energy of exhaust is used to improve power.The raising of power is due to the result that improves the mixed gas throughput of each working stroke.
A turbosupercharger is mainly comprised of an exhaust steam turbine and a compressor with an axle, wherein this compressor being arranged in the air inlet region of motor is connected on this axle, and is arranged in these impellers and the rotation of this compressor of the housing of this exhaust steam turbine.In the situation that a turbosupercharger has a variable turbine geometry, a plurality of adjusting vanes are rotatably installed in extraly in a supporting blades ring and are moved by the regulating ring being arranged in the turbine cylinder of this turbosupercharger.
About these parts of turbosupercharger and particularly wastegate parts these kinology parts or this turbosupercharger or also have the material of its VTG parts to make high requirement the VTG turbosupercharger in the situation that.The material of these parts must be heat-resisting, and this material even still must be able to provide enough intensity and therefore have dimensional stability in the very high until temperature of about 900 ℃.In addition, this material must have high wear resistance and have suitable oxidative stability, so that the corrosion of this material or wearing and tearing reduce under the elevated operating temperature of hundreds of even degree Celsius, and therefore under extreme work condition the stability of this material still guaranteed.
DE 10 2,004 062 564 A1 have disclosed a kind of supporting blades ring for the good thermostability of having of turbosupercharger and low skimming wear.In such supporting blades ring, used a kind of austenite material, a kind of ferrous alloy, this ferrous alloy has high sulphur content for improving the lubrication of these parts.Due to this specific synthetic, improved the creep-resistant property of this material and therefore realized the raising of the dimensional stability of this supporting blades ring at more than 850 ℃ temperature.
Given this, an object of the present invention is to provide according to a kind of parts for turbocharger applications of the preamble of claim 1 and a kind of turbosupercharger according to the preamble of claim 7 is provided, these parts and turbosupercharger have the temperature tolerance of improvement and oxidative stability and therefore also have extraordinary dimensional stability and hot strength and have corrosion resistance, and its salient point is best tribological property and the receptance to wearing and tearing that shows extraly reduction.
This object is that the feature by claim 1 and claim 7 realizes.
The trend towards oxidation of the temperature tolerance of the improvement of this material and the skimming wear characteristic of particularly improving and reduction be by according to of the present invention with a kind of parts for turbocharger applications or to comprise that a kind of like this embodiment of a kind of exhaust turbine supercharger form of parts realizes, these parts are comprised of a kind of ferrous alloy with a kind of ferrite basis structure, and this ferrite basis structure comprises a kind of carbide and nitride structure.In background of the present invention, a kind of carbide structure or nitride structure are understood as that and refer to a kind of microstructure Carbide Precipitation phase or the nitride precipitated phase that is formed in the case place, grain boundary in crystal grain and that be formed on this ferrous alloy.This carbide structure is a kind of dendrite microstructure in particular, consequently also obtained this material and therefore extraordinary deformation resistance and the wear resistance of these parts.Therefore provide a kind of parts for turbocharger applications or a kind ofly comprise that at least one is according to the exhaust turbine supercharger of parts of the present invention, these parts have optimization up to the temperature tolerance of 900 ℃, also there is high hot strength, have high wear resistance and corrosion resistance and in addition its salient point be the extraordinary sliding properties with the trend towards oxidation of reduction, particularly under high operating temperature.In addition, according to parts of the present invention and therefore exhaust turbine supercharger according to the present invention in long-term work or dimensionally stable.
Be not limited to theoretical in the situation that, supposing in this ferrite ferrous alloy, to have Carbide Precipitation and exist nitride to separate out the structure based on this uniqueness and improved considerably the stability of this alloy material and therefore improved the stability (particularly for fretting wear) of these parts and because the structure of this uniqueness has also improved their hot strength.
By way of example, according to ferrous alloy of the present invention, form a kind of carbide of having of these parts and nitride structure ferrite iron salient point at the contact of given 20Mpa, the Sliding velocity of 0.0025m/s, part temperatures and the skimming wear rate of the maximum 0.08mm of diameter, the i.e. abnormal rub resistance abrasiveness under 2000000 cycles of about 850 ℃.In addition, also improve hot strength, dimensional stability and improved high-temperature behavior.
Dependent claims relates to a plurality of favourable development of the present invention.
Therefore, in one embodiment, by form according to using at least one in elemental tungsten (W), titanium (Ti) and niobium (Nb) in the ferrite ferrous alloy of parts of the present invention, can improve considerably the wearing character of these parts, be exactly the rub resistance abrasiveness of these parts.These elements W, Ti and Nb have formed the carbide structure in this ferrous alloy substantially, this except extraordinary abrasion resistance properties, also improved this material and therefore according to the corrosion resistance of parts of the present invention.
In another embodiment, according to the salient point of the parts for turbocharger applications of the present invention, for comprising at least one, it is selected from following element: C, W, Cr, Mn, Ti, V, Nb and Si.Contain at least one a kind of combination that should be understood to refer to a kind of like this element or these elements in these elements for the production of this ferrous alloy, and then process this ferrous alloy to form according to parts of the present invention.Add to these elements in this ferrous alloy this can be original form with them, for example, with element form (for example, with slag inclusion or precipitated phase form) or with the form of its derivative, a kind of compound form (a kind of metal carbide or metal nitride) with corresponding element exists, this compound is to form in the process of producing this ferrous alloy or when forming according to the parts of being produced by this ferrous alloy of the present invention.In the case can be by the existence of conventional these elements of analytical method direct-detection in parts according to the present invention.
Elemental carbon at this, mainly play form according to carbide structure of the present invention, be the effect of the precipitated phase of carbide, and therefore improved the intensity of this material and the hot strength of this material be provided and therefore improved according to the hot strength of the parts for turbocharger applications of the present invention.Elemental tungsten has mostly improved equally the hot strength of this material and wear resistance and has contributed to its toughness due to the formation of carbide structure.The composition of a kind of tungsten and chromium and/or molybdenum makes it especially likely to improve considerably the corrosion resistance of this material in acid medium and has improved hot corrosion resistance.At this, use chromium to improve high temperature tensile strength and the flaking resistance of this material.Chromium is a kind of strong carbide constitutor extraly, and therefore also make thus this material and therefore according to the wearing character optimization of parts of the present invention.In formation, according to the ferrous alloy of the parts for turbocharger applications of the present invention, use elemental chromium also to there is another advantage: in the situation that high delivery temperature acts on these parts, chromium forms a kind of Cr on these parts
2o
3top layer, be a kind of patina, this has promoted resistance to sliding friction and the friction and abrasion of these parts under heat load effectively.Use manganese to there is a kind of effect of deoxidation.Manganese is in the γ of this ferrous alloy area extension and increased yield strength and the tensile strength of this material.In addition, manganese has promoted the wear resistance of these parts, particularly under high operating temperature.Vanadium in the production process of this ferrous alloy refinement this ferrous alloy primary grain and therefore refinement the cast structure of this ferrous alloy.Realized like this grain refinement of height, this has promoted the uniformity of this ferrous alloy and has allowed this material to have higher dynamic touch pressure.Forming according in the ferrous alloy of parts of the present invention, elemental niobium plays a kind of effect of carbide constitutor and has therefore promoted in the crystal grain of this ferrous alloy and the carbide structure of locating in the grain boundary of ferrous alloy.Niobium also improved this material and therefore or according to hot strength and the fatigue strength of the parts for turbocharger applications of the present invention.Niobium has promoted the γ region that ferrite forms and reduced this ferrous alloy in addition, and therefore can be for regulating power.Silicon promotes the casting characteristics of this ferrous alloy by reduce the stickiness of melt in casting process.Therefore in addition, silicon has promoted deoxidation in material according to the invention, and this element is added to and in this alloy, improved decidedly corrosion and heat resistant.By compatibly selecting and combine these elements, therefore can by a kind of mode that has a target, control the characteristic of this ferrous alloy, make like this according to the parts for turbocharger applications of the present invention and therefore also with good grounds exhaust turbine supercharger of the present invention there is a kind of characteristic distribution of special balance.Other elements and and other compounds be directed in this ferrous alloy.
According to another embodiment, according to the salient point of the parts for turbocharger applications of the present invention, be following true, be it consists essentially of following element: by weight 0.1% to 0.5%, 0.25% to 0.4% carbon (C) particularly by weight, by weight 15% to 22%, 18% to 20% chromium (Cr) particularly by weight, by weight at the most 1.3%, 1% manganese (Mn) at the most particularly by weight, by weight 0.8% to 2.1%, 1% to 1.8% silicon (Si) particularly by weight, by weight 0.4% to 1.3%, 0.6% to 1.1% niobium (Nb) particularly by weight, by weight 0.2% to 0.6%, 0.3% to 0.5% titanium (Ti) particularly by weight, by weight 1.8% to 3.0%, 2% to 2.7% tungsten (W) particularly by weight, by weight 0.3% to 1.0%, 0.5% to 0.8% vanadium (V) particularly by weight, by weight at the most 3%, 2% nitrogen (N) at the most particularly by weight, and She's amount is iron (Fe).The index of this tittle is relating to and forming according to the overall weight of the ferrous alloy of parts of the present invention at this in situation separately.As has been stated, contain described element should be understood to refer to these elements both can with element form and can be present in this ferrous alloy with its a kind of compound form and be therefore present according to the parts for turbocharger applications of the present invention.In this embodiment, above-mentioned element is present in according in parts of the present invention with indicated amount substantially.This means and may have inevitable impurity, although the total weight of these impurity based on this ferrous alloy, preferably accounting example is less than 2% and be particularly less than 1% by weight by weight.These inevitable residues or impurity comprise for example aluminium (Al), nickel (Ni), zirconium (Zr), cerium (Ce), boron (B), phosphorus (P) and sulphur (S) in the case.In the case can be by the amount of conventional these independent elements of elemental analysis method direct-detection in parts according to the present invention.
What have been surprisingly found that is that described composition really provides a kind of material, has been a kind of ferrous alloy, and this ferrous alloy processedly provides a kind of characteristic of special balance to distribute to described parts when forming a kind of parts for turbocharger applications at it.According to of the present invention this synthetic provide a kind of parts, these parts there is extra high hot strength, up to the temperature tolerances of 900 ℃ and therefore there is dimensional stability when the high temperature and the salient point of these parts is outstanding sliding properties and therefore has low especially skimming wear.In addition, corrosion resistance and oxidative stability are maximized, particularly under high operating temperature (acting on corresponding parts in as the working procedure a turbosupercharger).
A kind of that produce in this way and form according to the material of parts of the present invention and therefore there is following characteristic:
According to another embodiment of the invention, these parts for turbocharger applications are substantially free of σ phase.Be applied in service when up to 900 ℃ of parts according to the present invention especially like this.So effectively resist the embrittlement of this material, consequently improved the durability of these parts.σ is phase crisp, that intermetallic has high hardness mutually.They produce when a bcc metals and a face-centred cubic Metal Phase knock against each other hit, and the atomic radius of these two metals only matches with a small deviation.Such σ is undesirable mutually, because these σ have mutually a kind of embrittlement effect and because iron-based body is removed the characteristic of chromium.According to ferrous alloy of the present invention and therefore also with good grounds parts of the present invention be substantially free of σ phase, make like this undesired effect described in this there will not be.The formation that reduces or prevent σ phase is especially by having that the selection of target is controlled and being that (overall weight based on this ferrous alloy in situation separately) realizes at the most 2.1% time and by weight preferably at the most 1.8% by weight by making silicone content in this alloy material especially to the element of this ferrous alloy a kind of.
Therefore what according to the present invention, describe is a kind of parts for turbocharger applications, the salient point of these parts be outstanding polishing machine (even when the high temperature up to 900 ℃ high resistance to skimming wear), high hot strength and also have dimensional stability and outstanding in addition outside be excellent oxidative stability and corrosion resistance.By means of these outstanding characteristics, parts according to the present invention be specially adapted to these for turbocharger applications, be exposed to up to parts 900 ℃ of high temperature and/or high level wearing and tearing.Example components comprises dynamics parts, wastegate parts and VTG parts, and particularly VTG parts and flap assembling set.
Can produce and process this ferrous alloy to form according to the parts for turbocharger applications of the present invention by conventional technique.In order to ensure dimensional stability, can at 900 ℃, carry out aging-anneal about 2 hours, carry out subsequently air-cooled, to produce secondary precipitation.Can weld this material by TIG, plasma and EB welding procedure.
As one can independent process object, claim 7 defines and comprises at least one a kind of exhaust turbine supercharger of parts as has been described, and these parts form and comprise a kind of carbide and nitride structure by a kind of ferrous alloy with a kind of ferrite basis structure.
This according to these favourable embodiments of parts of the present invention according to being also applicable in the embodiment of exhaust turbine supercharger of the present invention.
Fig. 1 show according to an exhaust turbine supercharger of the present invention with the perspective view shown in the part of cross section.Fig. 1 shows according to a turbosupercharger 1 of the present invention, and this turbosupercharger has a turbine cylinder 2 and a compressor housing 3, and this compressor housing is connected on this turbine cylinder by a bearing housing 28.These housings 2,3 and 28 arrange along a spin axis R.This turbine cylinder is partly illustrated with cross section, to show the arrangement of a supporting blades ring 6 and exterior guiding grid 18 radially, these guiding grid are formed and had a plurality of adjusting vanes 7 by described ring, these adjusting vanes be on circumference, distribute and there are a plurality of running shafts 8.In this way, a plurality of nozzle cross-sections have been formed, these nozzle cross-sections become large or diminish according to the position of these adjusting vanes 7, and these nozzle cross-section utilizations act on (this turbine rotor is positioned at the central authorities of spin axis R) on turbine rotor 4 from the exhaust of motor in either large or small degree, described exhaust is to provide and be discharged via a central link 10 via a supply line 9, to driven and be positioned at a compressor drum 17 on same axle by this turbine rotor 4.
In order to control movement or the position of these adjusting vanes 7, provide an actuator 11.This can design according to the mode of any hope, but a preferred embodiment has one and controls housing 12, this control housing is controlled the control of a tappet member 14 fixed thereon and is moved, so that the movement on a regulating ring 5 (after being positioned in this supporting blades ring 6) changes into a kind of slight the rotatablely moving of this regulating ring by described tappet member.Between an annular portion 15 of supporting blades ring 6 and turbine cylinder 2, formed a free space 13 for these adjusting vanes 7.In order to guarantee this free space 13, this supporting blades ring 6 has a plurality of separators 16.
-example-
Unless otherwise indicated, the index of the amount of these independent elements relates to the overall weight of this ferrous alloy in situation separately.
Formation is according to a plurality of parts for turbocharger applications of the present invention, and a kind of ferrous alloy that is exactly lobe axle, lobe plate and lining is to be produced by a kind of conventional method by following element.For these elements, by chemical analysis, obtain following value: C: by weight 0.25% to 0.4%, Cr: by weight 18% to 20%, Mn: be less than by weight 1%, Si: by weight 1% to 1.8%, Nb: by weight 0.6% to 1.1%, Ti: by weight 0.3% to 0.5%, W: by weight 2% to 2.7%, V: by weight 0.5% to 0.8%, N: by weight≤3%, and She's amount is Fe.In addition, can find undesirable multiple residue Al, Ni, Zr, Ce, B, P and the S by weight with the ratio that is less than 1% of trace.
These are following characteristic according to the salient point of the parts of this examples produce:
This material stands a validation test series, and this series of trials comprises following test:
-outdoor weather resistance test
-climatic change test
-thermal shock test/heat cycle test-300h
-hot gas corrosion test in a pyrolysis furnace
-according to the Astrid Strauss of DIN EN ISO3651-2 (Strauss), test
-vibration friction abrasion on friction gauge test: the lining/axle under operating temperature (900 ℃)
The salient point of corresponding parts in all tests is the outstanding repellence for active force.Therefore this material has extremely high wear resistance and outstanding oxidative stability, make like this to have reduced considerably corrosion and the wearing and tearing/fretting wear of this material under the condition of indication, and therefore in a segment length time, also still guarantee the stability of parts this material and that therefore formed by this material in addition.
Heat cycle test:
According to these parts of the present invention (axle/lining), stand a heat cycle test, in this test, thermal shock is carried out as follows:
1. use a plurality of stable state rotors;
2.2 EGT work;
3. duration of test runs: 350h (roughly 2000 circulations);
4. at whole duration of test, the exhaust clack of these EGT stays open 15;
5. high temperature: rated power point T3=750 ℃, EGT is at the mass flow of turbine pusher side: 0.5kg/s;
6. low temperature: rated power point T3=100 ℃, EGT is at the mass flow of turbine pusher side: 0.5kg/s;
7. the endurance in cycle: 2x5min. (10min.);
8. carry out three middle crack tests.
Given following load aggregation, is low high temperature oxidation according to the salient point of the parts of correspondence of the present invention (axle/lining), when 900 ℃ of part temperatures at the most 40 μ m, the oxygenation efficiency of 35 μ m at the most particularly:
| Parameter | Result |
| Bearing load | 10N／mm 2To 18N/mm 2 |
| Sliding velocity | 0.0025m／s |
| Part temperatures | 500 ℃ to 900 ℃ |
| Surface roughness | Rz6.3 |
| Test(ing) medium | Diesel exhaust gas |
| Duration of test runs | 500h |
| Clock frequency | 0.2Hz |
| Regulate angle | 45° |
| Friction valve | <0.18 |
| Axle journal diameter | 4.7mm |
| Pressure pulsation | >200bar |
| Exhaust pressure | 1.5bar |
| Wear rate | <0.08mm |
These result verification in this indication parts according to the present invention in up to 900 ℃ of temperature ranges, be ideally suitable for the application of turbosupercharger.
Reference list
1 turbosupercharger
2 turbine cylinders
3 compressor housings
4 turbine rotors
5 regulating rings
6 supporting blades rings
7 adjusting vanes
8 pivotal axis
9 supply lines
10 axial connecting parts
11 actuation devices
12 control housing
13 free spaces for guide vane 7
14 tappet members
The annular portion of 15 turbine cylinders 2
16 separators/separator cam
17 compressor drums
18 guiding grid
28 bearing housinges
R spin axis
Claims (10)
1. for parts for turbocharger applications, particularly, in diesel engine, these parts are comprised of a kind of ferrous alloy with a kind of ferrite basis structure, and this ferrite basis structure comprises a kind of carbide and nitride structure.
2. parts for turbocharger applications as claimed in claim 1, these parts comprise that at least one is selected from following element: W, Ti and Nb.
3. parts for turbocharger applications as claimed in claim 1 or 2, these parts comprise that at least one is selected from following element: C, W, Cr, Mn, Ti, V, Nb and Si.
4. parts for turbocharger applications as described in one of above claim, wherein, these parts consist essentially of following element:
C: by weight 0.1% to 0.5%, by weight particularly 0.25% to 0.4%,
Cr: by weight 15% to 22%, by weight particularly 18% to 20%,
Mn: by weight≤1.3%, by weight particularly≤1%,
Si: by weight 0.8% to 2.1%, by weight particularly 1% to 1.8%,
Nb: by weight 0.4% to 1.3%, by weight particularly 0.6% to 1.1%,
Ti: by weight 0.2% to 0.6%, by weight particularly 0.3% to 0.5%,
W: by weight 1.8% to 3.0%, by weight particularly 2% to 2.7%,
V: by weight 0.3% to 1.0%, by weight particularly 0.5% to 0.8%,
N: by weight≤3%, by weight particularly≤2%, and
Fe: be added into by weight 100%.
5. parts for turbocharger applications as described in one of above claim, wherein, these parts are substantially free of σ phase.
6. parts for turbocharger applications as described in one of above claim, wherein, these parts are kinology parts and/or wastegate parts and/or VTG parts, particularly VTG parts and/or a flap assembling set.
7. an exhaust turbine supercharger, especially for diesel engine, this exhaust turbine supercharger comprises the parts that at least one is comprised of a kind of ferrous alloy, and this ferrous alloy has a kind of ferrite basis structure, and this ferrite basis structure comprises a kind of carbide and nitride structure.
8. exhaust turbine supercharger as claimed in claim 7, wherein, these parts comprise that at least one is selected from following element: W, Ti and Nb, and particularly at least one is selected from following element: C, W, Cr, Mn, Ti, V, Nb and Si.
9. exhaust turbine supercharger as claimed in claim 7 or 8, wherein, these parts consist essentially of following element:
C: by weight 0.1% to 0.5%, by weight particularly 0.25% to 0.4%,
Cr: by weight 15% to 22%, by weight particularly 18% to 20%,
Mn: by weight≤1.3%, by weight particularly≤1%,
Si: by weight 0.8% to 2.1%, by weight particularly 1% to 1.8%,
Nb: by weight 0.4% to 1.3%, by weight particularly 0.6% to 1.1%,
Ti: by weight 0.2% to 0.6%, by weight particularly 0.3% to 0.5%,
W: by weight 1.8% to 3.0%, by weight particularly 2% to 2.7%,
V: by weight 0.3% to 1.0%, by weight particularly 0.5% to 0.8%,
N: by weight≤3%, by weight particularly≤2%, and
Fe: be added into by weight 100%.
10. the exhaust turbine supercharger as described in one of claim 7 to 9, wherein, these parts are substantially free of σ phase.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011103535 | 2011-06-07 | ||
| DE102011103535.8 | 2011-06-07 | ||
| PCT/US2012/039278 WO2012170210A2 (en) | 2011-06-07 | 2012-05-24 | Turbocharger and component therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103534458A true CN103534458A (en) | 2014-01-22 |
Family
ID=47296681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280022878.4A Pending CN103534458A (en) | 2011-06-07 | 2012-05-24 | Turbocharger and component therefor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140086755A1 (en) |
| JP (1) | JP2014523501A (en) |
| KR (2) | KR20180108881A (en) |
| CN (1) | CN103534458A (en) |
| DE (1) | DE112012001811T5 (en) |
| WO (1) | WO2012170210A2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832274A (en) * | 2014-02-07 | 2015-08-12 | 通用汽车环球科技运作有限责任公司 | Turbocharger waste-gate valve assembly wear reduction |
| CN104862602A (en) * | 2014-02-24 | 2015-08-26 | 霍尼韦尔国际公司 | Stainless Steel Alloys, Turbocharger Turbine Housings Formed From The Stainless Steel Alloys, And Methods For Manufacturing The Same |
| CN109477190A (en) * | 2016-07-28 | 2019-03-15 | 博格华纳公司 | Ferritic steel for turbocharger |
| CN113088829A (en) * | 2021-04-07 | 2021-07-09 | 天津达祥精密工业有限公司 | Ferrite system heat-resistant steel for automobile turbine shell and exhaust pipe and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013216473A1 (en) | 2013-08-20 | 2015-02-26 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Bushing element for supporting a control shaft of a wastegate device or a variable turbine geometry |
| US10844465B2 (en) * | 2017-08-09 | 2020-11-24 | Garrett Transportation I Inc. | Stainless steel alloys and turbocharger kinematic components formed from stainless steel alloys |
| US11492690B2 (en) | 2020-07-01 | 2022-11-08 | Garrett Transportation I Inc | Ferritic stainless steel alloys and turbocharger kinematic components formed from stainless steel alloys |
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- 2012-05-24 KR KR1020187027399A patent/KR20180108881A/en not_active Application Discontinuation
- 2012-05-24 US US14/119,242 patent/US20140086755A1/en not_active Abandoned
- 2012-05-24 JP JP2014514484A patent/JP2014523501A/en active Pending
- 2012-05-24 KR KR1020137034179A patent/KR20140038472A/en active IP Right Grant
- 2012-05-24 CN CN201280022878.4A patent/CN103534458A/en active Pending
- 2012-05-24 WO PCT/US2012/039278 patent/WO2012170210A2/en active Application Filing
- 2012-05-24 DE DE112012001811.7T patent/DE112012001811T5/en not_active Withdrawn
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| US2848323A (en) * | 1955-02-28 | 1958-08-19 | Birmingham Small Arms Co Ltd | Ferritic steel for high temperature use |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832274A (en) * | 2014-02-07 | 2015-08-12 | 通用汽车环球科技运作有限责任公司 | Turbocharger waste-gate valve assembly wear reduction |
| CN104862602A (en) * | 2014-02-24 | 2015-08-26 | 霍尼韦尔国际公司 | Stainless Steel Alloys, Turbocharger Turbine Housings Formed From The Stainless Steel Alloys, And Methods For Manufacturing The Same |
| CN104862602B (en) * | 2014-02-24 | 2019-03-08 | 盖瑞特交通一公司 | Stainless steel alloy, the turbocharger turbine shell formed by the stainless steel alloy and its manufacturing method |
| CN109477190A (en) * | 2016-07-28 | 2019-03-15 | 博格华纳公司 | Ferritic steel for turbocharger |
| CN109477190B (en) * | 2016-07-28 | 2022-06-07 | 博格华纳公司 | Ferritic steel for turbocharger |
| CN113088829A (en) * | 2021-04-07 | 2021-07-09 | 天津达祥精密工业有限公司 | Ferrite system heat-resistant steel for automobile turbine shell and exhaust pipe and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180108881A (en) | 2018-10-04 |
| JP2014523501A (en) | 2014-09-11 |
| WO2012170210A2 (en) | 2012-12-13 |
| WO2012170210A3 (en) | 2013-01-31 |
| DE112012001811T5 (en) | 2014-02-06 |
| KR20140038472A (en) | 2014-03-28 |
| US20140086755A1 (en) | 2014-03-27 |
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