CN104988427A - Stainless steel product, use of the product and method of its manufacture - Google Patents
Stainless steel product, use of the product and method of its manufacture Download PDFInfo
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- CN104988427A CN104988427A CN201510326076.8A CN201510326076A CN104988427A CN 104988427 A CN104988427 A CN 104988427A CN 201510326076 A CN201510326076 A CN 201510326076A CN 104988427 A CN104988427 A CN 104988427A
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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
- C22C38/001—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a stainless steel product, particularly to a duplex stainless steel casting with high machinability, to the use of the product and to the method to produce the product. The product contains in weight percent up to 0.07% carbon, up to 2% silicon, 3-8% manganese, 19-23% chromium, 0.5-1.7% nickel, up to 1% of molybdenum and/or tungsten with the formula (Mo+ 1/2 W) less than 1%, up to 1% copper and 0.15-0.30% nitrogen, the remainder being iron and incidental impurities.
Description
The application be based on application number be 200980117700.6, the divisional application of the applying date, to be May 14, denomination of invention in 2009 the be Chinese patent application of " purposes of stainless steel product, described product and manufacture method thereof ".
The present invention relates to the foundry goods be made up of stainless steel, it has dual phase ferritic-austenitic microstructure and has the combining properties of high structure stability and improvement, particularly machining property and welding property.The invention still further relates to the purposes of product and relate to the manufacture method of foundry goods.
With mainly comprise compared with the ferritic austenite foundry goods of 10-15% at the most, ferritic-austenitic or two-phase stainless steel casting are generally defined as having the ferrite of almost equal ratio and the alloy of austenitic mixture.For the two-phase foundry goods according to ASTM A890 standard, do not specify ferrite level, but the alloy listed have the ferrite of about 30 ~ 60% scopes and the austenite of surplus.By this duplex structure, the performance profile (profile) attracted people's attention can be designed.Duplex stainless steel was the earliest developed before about 80 years, and they are most possibly formed from austenite foundry goods, in microstructure, wherein there is a certain amount of ferrite be proved to be favourable.In fact, two-phase composition usually shows and forms better castability than austenite.Other advantageous property of binary phase materials is: high physical strength, excellent fatigue strength, good wear resistance and good erosion resistance.Therefore, cast article and wrought product all obtain many noticeable application.Utilize various optimization form, describe some two-phase alloys compositions.In many cases, as the goods in the patent of two-phase composition, also cast product is comprised.In recent years, along with the very big increase of material cost, special concern is given for following: reduce the level of nickel in alloy and molybdenum but still keep suitable performance.
Balancing each other in the ferrite for 30 ~ 70% and austenitic range, can realize the advantageous property of duplex stainless steel.The interaction of main alloy element (particularly chromium, nitrogen, nickel and molybdenum) is quite complicated.In order to the stable duplex structure realizing responding well processing and manufacture, must very carefully so that each making in these elements be in appropriate level.Except balancing each other, under high temperature, between poisonous metal, the formation of phase is the second primary concern for duplex stainless steel.σ phase and χ phase are formed and preferentially to separate out in ferrite in Gao Ge, high molybdenum stainless steel.The interpolation of nitrogen changes in an advantageous manner and balances each other thus avoid the formation of this type of phase.
US Patent No. 4,500,351 relate to a kind of Cast Duplex Stainless Steel, wherein, in order to avoid forming σ phase, after 1200 DEG C of solution treatment and shrend chilling, microstructure in foundry goods comprises ferrite matrix, and this ferrite matrix contains the austenite at least about 30%.Foundry goods comprise about 0.02 % by weight carbon, 24 % by weight chromium, about 9.5 % by weight nickel, about 6 % by weight molybdenum, the manganese of about 0.5 % by weight, the silicon of about 0.2 % by weight and about 0.25 % by weight nitrogen.The foundry goods of this US Patent No. 4,500,351 is applicable in the pump part of such as impeller and shell and the valve member of such as base and gate.
In US Patent No. 4,828, describe in 630 and there is good combining properties and opposing extremely martensitic caloritropic duplex stainless steel at casting ortho states.This ladle containing at the most 0.07 % by weight carbon, 17 ~ 21.5 % by weight chromium, 1 ~ 4 % by weight nickel, 4 ~ 8 % by weight manganese, 0.05 ~ 0.15 % by weight nitrogen, be less than 2 % by weight silicon, be less than the molybdenum of 2 % by weight and be less than the copper of 1.5 % by weight.The ladle of this patent contains the ferrite of 30 ~ 60%, and is particularly suitable for the thin-section casting for bottom of car parts.This steel has and comprises following casting ortho states performance: the minimum unit elongation of 10%, be greater than 50ksi (350N/mm
2) 0.2% yield strength, at 0 DEG C at least 20ft.-lbs (30Nm) toughness and there is no nitrogen hole.
US Patent No. 6,033, the 497 pitting resistance duplex steel alloys relating to the machining property with improvement, also comprise beyond this alloy deironing be less than 0.1 % by weight carbon, 25 ~ 27 % by weight chromium, 5 ~ 7.5 % by weight nickel, be less than 0.5 % by weight molybdenum, be less than 0.15 % by weight nitrogen, be less than 1.5 % by weight silicon, be less than the manganese of 2.0 % by weight, the copper of 1.5 ~ 3.5 % by weight.Mentioning in the prior art part of this United States Patent (USP), by adding alloy element as sulphur and selenium (these elements may reduce corrodibility), the machining property of austenitic stainless steel can be improved.In addition; it is claimed; add copper when not adding molybdenum and allow slowly controlled cooling model double phase stainless steel alloy in the heat treatment furnace of tight seal, make while keeping excellent ductility and erosion resistance, the stretching unrelieved stress be harmful to be minimized.
According to US Patent No. 6,033,497, when do not use separately and slowly heat treatment step after the casting by heat treatment process steel grade (steel grade) in the mould that accelerates.The steel grade of this patent is used in particular for hollow circle tube centrifugal casting and it is for such as paper machine vacuum furnace shell application.In mould, thermal treatment comprises: will the rate-controlling of casting cooling in the temperature range of about 260 DEG C ~ about 1090 DEG C, and within about 450 DEG C that the temperature of alloy in mould are remained on mold outside temperature.Compared with the same alloy composition in controlled cooling slow in the heat treatment furnace of tight seal, when the thermal treatment by accelerating processes after the casting in mold, this steel grade has the machining property of improvement.Alloy without process in mould has the nominal inside diameter stretching unrelieved stress of 24MPa, and the analog value of the alloy processed in mold is after the casting 52MPa.
European patent EP 1,327,008 describes the ferritic-austenitic stainless steel having and mainly comprise 35 ~ 65 volume % ferrites and the austenitic microstructure of 35 ~ 65 volume %.The composition of this steel grade comprises following as main alloying composition: the carbon of 0.02 ~ 0.07 % by weight, the chromium of 19-23 % by weight, 1.1 ~ 1.7 % by weight nickel, the nitrogen of 0.15 ~ 0.30 % by weight, the manganese of 3 ~ 8 % by weight and be less than 1 % by weight optional molybdenum and/or copper.The steel of this European patent is with trade mark LDX by Outokumpu
manufacture, and wrought product is subject to large commercial interest.
Two-phase stainless steel casting generally shows good castability.But, owing to there is limited nitrogen solubility usual from the ferritic phase that the steel melt with double phase stainless steel alloy composition solidifies, therefore, in process of setting, there is the risk forming nitrogen hole.Generally speaking, most of stainless cast steel part stands various machining operations to be applicable to use in the system of this foundry goods.In this respect, compared with such as austenitic stainless steel, duplex stainless steel is considered to more be difficult to mechanical workout.The higher intensity levels of duplex stainless steel explains this behavior.The interpolation of carbon and nitrogen all increases the intensity of steel and the degree of strain hardening, and therefore should keep lower to realize good machining property.But in order to good welding property, modern double phase stainless steel alloy is with high nitrogen content, and the welding property of the best is to sacrifice machining property for cost.
A kind of application of use casting or deformation duplex stainless steel is the outer steel shell of the vacuum furnace for paper machine.Because the outer steel shell of casting or deformation stands significant mechanical workout to manufacture final vacuum furnace, a kind of important material property of therefore this application is also machining property.As about US Patent No. 6,033, described in 497, a kind of mode improving machining property adds sulphur or selenium, but these elements reduce corrosive nature.
International application WO 2006/041344 describes the outer steel shell of the vacuum furnace for paper machine, wherein, uses European patent EP 1,327 when not adding any sulphur, the deformation steel grade LDX of 008
in addition, with US Patent No. 6,033,497 when comparing, and do not implement any process improving machining property, and the optional addition of copper and molybdenum is significantly less.
The result of study of the saving type binary phase materials applied especially about pump is disclosed in the report " the saving type duplex stainless steel for pump application " (Lean duplex Stainless Steels for Pump Applications) that " the stainless steel world 2007 meeting " (Stainless SteelWorld 2007Conference) that the people such as Schramm held in Maas Te Lihete (Maastricht) in 6-8 day in November, 2007 delivers.A kind of alloy " cast 2101 " is made by having the casting bar formed as follows: the carbon of 0.028 % by weight, the silicon of 0.97 % by weight, 5.04 % by weight manganese, 0.011 % by weight phosphorus, 0.004 % by weight sulphur, 20.73 % by weight chromium, 0.30 % by weight molybdenum, the nickel of 1.73 % by weight, the nitrogen of 0.20 % by weight and 0.30 % by weight copper.As this alloy " cast 2101 " solution annealing result after shrend at 1050 DEG C of temperature, the people such as Schramm mention such as 0.2% proof strength and are 473MPa and A5 unit elongation is 37.3%.About corrosive nature, the people such as Schramm claim, compare with the alloy 2304 of composition of the copper of 0.26 % by weight with carbon, the silicon of 0.64 % by weight, manganese, the phosphorus of 0.015 % by weight, sulphur, the chromium of 22.50 % by weight, molybdenum, the nickel of 4.92 % by weight, the nitrogen of 0.09 % by weight of 0.28 % by weight of 0.001 % by weight of 1.32 % by weight with 0.024 % by weight, alloy " cast 2101 " has lower pitting potential.But the people such as Schramm do not mention this alloy " cast 2101 " for any information expecting the suitability applied.
The object of the invention is, eliminate some shortcomings of prior art and realize the foundry goods of duplex stainless steel, the formation of this foundry goods for the harmful precipitate resisting such as intermetallic phase in the method manufacturing foundry goods is sufficiently stable, and it has the combination of high strength and good erosion resistance, good castability and high machining property as performance.List essential characteristic of the present invention in the appended claims.
The present invention relates to a kind of stainless steel product, preferably relate to the two-phase stainless steel casting with high machining property, this foundry goods comprise at the most 0.07 % by weight carbon, at the most 2 % by weight silicon, be greater than 3 % by weight at the most 8 % by weight manganese, be greater than 19 % by weight at the most 23 % by weight chromium, be greater than 0.5 % by weight at the most 1.7 % by weight nickel and be greater than 0.15 % by weight at the most 0.30 % by weight nitrogen.Other a small amount of element or impurity and optional element can be comprised having the alloy used in the manufacture of the two-phase stainless steel casting of above-mentioned scope, such as at the most 1 % by weight copper, to be less than according to formula (Mo+1/2W) 1 % by weight altogether at the most 1 % by weight molybdenum and/or tungsten, surplus is iron and occasionally deposits impurity.The microstructure of two-phase stainless steel casting of the present invention comprises the ferrite of 30 ~ 70 volume % and the austenite of 30 ~ 70 volume %.The invention still further relates to and manufacture the castmethod of described foundry goods and the purposes of described foundry goods.
In the manufacture of large-size stainless steel foundry goods, it is important for having following microstructure: the enough stably opposing of this microstructure can cause harmful precipitate of disadvantageous effect as the formation of intermetallic phase to performance.Therefore, wish that foundry goods of the present invention has the two-phase composition of saving (lean), balance.Preferably, the microstructure of duplex stainless steel of the present invention comprises the ferrite of 50 volume % and the austenite of 50 volume %.
Another key property of steel casting easily carries out repairing welding to connect.Except good castability, foundry goods of the present invention has quite high resistivity for the Thermal cracking of weld period usually.If need to repair welding, then because little weldpool is surrounded by large casting area, make welding metal and heat affected zone that quick cooling easily occur, therefore in most of the cases need to perform postweld heat treatment.This can cause the microstructure with high ferrite content, this microstructure for cracking susceptible and performance reduce, this is the reason place must carrying out subsequent heat treatment.For this reason, wish that duplex stainless steel of the present invention composition (as in welding) during rapid thermal cycles has high austenite and formed.In order to obtain this feature, the high nitrogen-containing in two-phase stainless steel casting of the present invention is desirable.
Two-phase stainless steel casting of the present invention can advantageously comprise preferably at the most 0.05 % by weight and more preferably at the most 0.03 % by weight carbon, preferably at the most 1 % by weight silicon, be preferably greater than 4 % by weight and at the most 6 % by weight manganese, be preferably greater than 21 % by weight and at the most 22 % by weight chromium, be preferably greater than 1.1 % by weight and at the most 1.7 % by weight and more preferably greater than 1.35 % by weight and at the most 1.7 % by weight nickel, with be preferably greater than 0.20 % by weight and at the most 0.26 % by weight nitrogen and optional element at the most 1 % by weight copper, according to formula (Mo+1/2W) be less than 1 % by weight altogether at the most 1 % by weight molybdenum and/or tungsten, surplus is iron and occasionally deposits impurity.
Therefore, the present invention relates to a kind of stainless steel product, particularly there is the two-phase stainless steel casting of high machining property, it comprises: at the most 0.07 % by weight carbon, at the most 2 % by weight silicon, 3 ~ 8 % by weight manganese, 19 ~ 23 % by weight chromium, 0.5 ~ 1.7 % by weight nickel, be at most 1 % by weight molybdenum and/or tungsten and formula (Mo+1/2W) is less than the nitrogen of copper and 0.15 ~ 0.30 % by weight of 1 % by weight, at the most 1 % by weight, surplus is iron and occasionally deposits impurity.
In one embodiment, this stainless steel product comprises the carbon of at the most 0.05 % by weight.
In one embodiment, this stainless steel product comprises the carbon of at the most 0.03 % by weight.
In one embodiment, this stainless steel product comprises the manganese of 4 ~ 6 % by weight.
In one embodiment, this stainless steel product comprises the chromium of 21 ~ 22 % by weight.
In one embodiment, this stainless steel product comprises the nickel of 1.1 ~ 1.7 % by weight.
In one embodiment, this stainless steel product comprises the nitrogen of 0.20 ~ 0.26 % by weight.
The invention still further relates to the purposes of stainless steel product, it is used in pump.
The invention still further relates to the purposes of stainless steel product, it is used in valve.
The invention still further relates to the purposes of stainless steel product, it is used in impeller.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by rotary casting.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by chill casting.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by casting-forging method.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by investment cast.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by pressure die casting.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by permanent mold castings.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by sand mold casting.
The invention still further relates to the manufacture method of stainless steel product, manufacture this product by vacuum casting.
In more detail the present invention is described referring to accompanying drawing.
Test-results when Fig. 1 to represent the machining property of foundry goods of the present invention compared with the machining property of the austenitic stainless steel of prior art.
Fig. 2 represents the microstructure of the simulation repair by welding in foundry goods of the present invention.
Two-phase stainless steel casting of the present invention is tested with welding in particularly repair by welding in machining property.
In order to test mechanical processing characteristics, manufacture the foundry goods of the chemical constitution of the weight percent had in following table 1:
Table 1
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
| 0.026 | 0.76 | 4.93 | 0.021 | 0.001 | 21.37 | 1.44 | 0.23 | 0.34 | 0.226 |
The ingot casting with square-section 140mm is made to carry out different tests when not carrying out any heat treatment in advance to cast ortho states.The mechanical property of foundry goods is as shown in table 2 below.
Table 2
Strength level is far above austenite foundry goods, and this austenite foundry goods generally shows the yield strength of about 200MPa and the ultimate strength of about 500MPa.Carried out the test of machining property by the turnery processing of cylinder sample, and figure 1 illustrates result.The figure illustrates the permissible cutting speed for the turnery processing life tools of 15 minutes.Tool insert is Wimet type.The machining property of foundry goods of the present invention is better than the austenitic steel of 304L type.The expected results that this and austenitic steel are regarded as having better machining property is contrary.
Further test is performed for the foundry goods of the present invention manufactured by the chemical constitution as expressed in weight percent in following table 3.
Table 3
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
| 0.024 | 0.69 | 4.89 | 0.020 | 0.001 | 21.45 | 1.60 | 0.20 | 0.25 | 0.230 |
The thick square coupons of 30mm is taken off from the molded shapes that 140mm is thick, and the repairing welding by using gas-shielded metal-arc welding to simulate sample.Matrix metal is in casting ortho states.Make groove in the sample and then use the packing material being suitable for this alloy to fill described groove by welding.Arc energy is 0.7 ~ 0.8kJ/mm.Equally, in heat-affected zone, gained weld seam does not have crackle and shows normal microstructure.This point shown in Figure 2.
Foundry goods of the present invention is cast, such as rotary casting, chill casting, casting-forging method, investment cast, pressure die casting, permanent mold castings, sand mold casting and vacuum casting by different casting techniques.Although have high nitrogen content, castability is good, does not show the trend occurring that cracking or hole are formed.This is because there is the high-caliber manganese of 3 ~ 8% in steel, and preferably can use the manganese of 4 ~ 6% scopes.Then foundry goods is preferably cooled fast by solution annealing at the temperature of 1020 ~ 1100 DEG C.But, thinner section bar can be used under casting ortho states.Although microstructure is not performance and may be difficult to correct measurement, the present invention comprises austenite and the ferrite of approximately equal amounts, and permissible phase scope is 30 ~ 70%.In addition, this microstructure has very high resistivity for the precipitation of intermetallic phase, this so that give low embrittlement-sensitive.Foundry goods of the present invention shows excellent machining property under as cast condition ortho states and solution annealing state.
Therefore, two-phase foundry goods of the present invention is owing to having high machining property, high intensity and good welding property thus providing for the desirable of austenite cast material and the surrogate of cheapness.Foundry goods of the present invention can be particularly advantageous in pump, valve, the various scheme of impeller and parts, or in other following scheme: wherein in casting ortho states or the combination needing high machining property, high intensity and good welding property after some further process (such as solution annealing and quenching condition) in foundry goods.
Claims (14)
1. the two-phase stainless steel casting with high machining property is used in pump, purposes in valve or impeller, it is characterized in that the microstructure of casting ortho states foundry goods comprises the ferrite of 30 ~ 70 volume % and the austenite of 30 ~ 70 volume %, and described foundry goods comprises: the carbon of 0.07 % by weight at the most, the silicon of 2 % by weight at the most, the manganese of 3 ~ 8 % by weight, the chromium of 19 ~ 23 % by weight, be greater than 1.35 % by weight and at the most 1.7 % by weight nickel, be at most 1 % by weight molybdenum and/or tungsten and formula (Mo+1/2W) is less than 1 % by weight, the nitrogen of copper and 0.15 ~ 0.30 % by weight of 1 % by weight at the most, surplus is iron and occasionally deposits impurity.
2. purposes according to claim 1, is characterized in that, it comprises the carbon of at the most 0.05 % by weight.
3. purposes according to claim 2, is characterized in that, it comprises the carbon of at the most 0.03 % by weight.
4. according to purposes in any one of the preceding claims wherein, it is characterized in that, it comprises the manganese of 4 ~ 6 % by weight.
5. according to purposes in any one of the preceding claims wherein, it is characterized in that, it comprises the chromium of 21 ~ 22 % by weight.
6. according to purposes in any one of the preceding claims wherein, it is characterized in that, it comprises the nitrogen of 0.20 ~ 0.26 % by weight.
7. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by rotary casting.
8. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by chill casting.
9. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by casting-forging method.
10. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by investment cast.
11. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by pressure die casting.
12. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by permanent mold castings.
13. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by sand mold casting.
14. any one of claim 1 ~ 6 the manufacture method with the two-phase stainless steel casting of high machining property that limits, it is characterized in that, manufacture this foundry goods by vacuum casting.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20080360 | 2008-05-16 | ||
| FI20080360A FI125458B (en) | 2008-05-16 | 2008-05-16 | Stainless steel product, use of product and process for its manufacture |
| CN2009801177006A CN102027147A (en) | 2008-05-16 | 2009-05-14 | Stainless steel product, use of the product and method of its manufacture |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801177006A Division CN102027147A (en) | 2008-05-16 | 2009-05-14 | Stainless steel product, use of the product and method of its manufacture |
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|---|---|
| CN104988427A true CN104988427A (en) | 2015-10-21 |
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| CN201510326076.8A Pending CN104988427A (en) | 2008-05-16 | 2009-05-14 | Stainless steel product, use of the product and method of its manufacture |
| CN2009801177006A Pending CN102027147A (en) | 2008-05-16 | 2009-05-14 | Stainless steel product, use of the product and method of its manufacture |
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| Country | Link |
|---|---|
| US (1) | US20110064601A1 (en) |
| EP (1) | EP2279276B1 (en) |
| JP (1) | JP5613152B2 (en) |
| KR (1) | KR20100133487A (en) |
| CN (2) | CN104988427A (en) |
| AU (1) | AU2009247934B2 (en) |
| BR (1) | BRPI0912807B1 (en) |
| CA (1) | CA2722236C (en) |
| EA (1) | EA027733B1 (en) |
| ES (1) | ES2797953T3 (en) |
| FI (1) | FI125458B (en) |
| MX (1) | MX343938B (en) |
| PL (1) | PL2279276T3 (en) |
| SI (1) | SI2279276T1 (en) |
| TW (1) | TWI490345B (en) |
| WO (1) | WO2009138570A1 (en) |
Cited By (2)
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| CN109487172A (en) * | 2019-01-14 | 2019-03-19 | 东北大学 | One kind having excellent thermoplastic two phase stainless steel and preparation method thereof |
| CN113025891A (en) * | 2021-02-08 | 2021-06-25 | 江阴兴澄特种钢铁有限公司 | Duplex stainless steel S32101 steel plate and manufacturing method thereof |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251194A (en) * | 2010-05-18 | 2011-11-23 | 宝山钢铁股份有限公司 | Two-phase stainless steel cold-rolled sheet with good surface corrosion resistance, and preparation method thereof |
| JP2012107593A (en) * | 2010-11-19 | 2012-06-07 | Hitachi Ltd | Steam turbine valve |
| KR101306263B1 (en) * | 2012-01-31 | 2013-09-09 | 한국기계연구원 | High-nitrogen low-nickel duplex stainless steels with an excellent pitting corrosion resistance |
| WO2013115524A1 (en) | 2012-01-31 | 2013-08-08 | 한국기계연구원 | High-performance high-nitrogen duplex stainless steels excellent in pitting corrosion resistance |
| KR101306262B1 (en) * | 2012-01-31 | 2013-09-09 | 한국기계연구원 | High-nitrogen nickel-free duplex stainless steels with an excellent Eco-index and pitting corrosion resistance |
| DE102012100908A1 (en) | 2012-02-03 | 2013-08-08 | Klaus Kuhn Edelstahlgiesserei Gmbh | Duplex steel with improved notched impact strength and machinability |
| CN103074552A (en) * | 2013-01-14 | 2013-05-01 | 浙江大学 | Economical type high-performance duplex stainless steel and preparation method thereof |
| US9499889B2 (en) | 2014-02-24 | 2016-11-22 | Honeywell International Inc. | Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same |
| WO2016049328A1 (en) * | 2014-09-24 | 2016-03-31 | The Nanosteel Company, Inc. | High ductility steel alloys with mixed microconstituent structure |
| CN105821346B (en) * | 2015-01-06 | 2017-11-03 | 宝钢特钢有限公司 | A kind of economical diphase stainless steel wire rod and its manufacture method |
| CN105349906B (en) * | 2015-11-02 | 2018-08-10 | 四川维珍高新材料有限公司 | The sleeping spiral shell centrifugal separator drum centrifugal casting process of super-duplex stainless steel |
| CN107779788A (en) * | 2017-10-31 | 2018-03-09 | 福州大学 | A kind of two phase stainless steel and its solid solution treatment process |
| 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 |
| WO2022239883A1 (en) * | 2021-05-11 | 2022-11-17 | 한국재료연구원 | High-strength and low-alloy duplex stainless steel and manufacturing method therefor |
| CN114807756A (en) * | 2022-04-19 | 2022-07-29 | 山西太钢不锈钢股份有限公司 | Stainless steel wire for thick-wall deep-drawing shell and manufacturing method and application thereof |
| KR102658836B1 (en) | 2023-04-03 | 2024-04-18 | 터보파워텍(주) | Stainless steel pressure casting equipment |
| KR102658837B1 (en) | 2023-04-03 | 2024-04-18 | 터보파워텍(주) | Stainless steel pressure casting method and packing ring for turbine manufactured according to the method |
| KR102658835B1 (en) | 2023-04-03 | 2024-04-18 | 터보파워텍(주) | Mold for stainless steel pressure casting |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617485A (en) * | 1983-12-19 | 1986-10-14 | Nippondenso Co., Ltd. | Rotor of alternator mounted on vehicle |
| US4500351A (en) * | 1984-02-27 | 1985-02-19 | Amax Inc. | Cast duplex stainless steel |
| US4828630A (en) | 1988-02-04 | 1989-05-09 | Armco Advanced Materials Corporation | Duplex stainless steel with high manganese |
| JPH0790471A (en) * | 1993-09-17 | 1995-04-04 | Nippon Steel Corp | High mn and high n austenitic stainless steel cast slab and its production |
| DE4333917C2 (en) * | 1993-10-05 | 1994-06-23 | Hans Prof Dr Ing Berns | Edge embroidery to create a high-strength austenitic surface layer in stainless steels |
| US5456818A (en) * | 1993-11-03 | 1995-10-10 | Ingersoll-Rand Company | Method for preventing fretting and galling in a polygon coupling |
| US5862992A (en) * | 1997-02-14 | 1999-01-26 | Sterling Deaerator Company | Adjustable dual cone spray pattern valve apparatus and related methods |
| US6033497A (en) | 1997-09-05 | 2000-03-07 | Sandusky International, Inc. | Pitting resistant duplex stainless steel alloy with improved machinability and method of making thereof |
| US6375412B1 (en) * | 1999-12-23 | 2002-04-23 | Daniel Christopher Dial | Viscous drag impeller components incorporated into pumps, turbines and transmissions |
| SE517449C2 (en) * | 2000-09-27 | 2002-06-04 | Avesta Polarit Ab Publ | Ferrite-austenitic stainless steel |
| JP4031992B2 (en) * | 2001-04-27 | 2008-01-09 | リサーチ インスティチュート オブ インダストリアル サイエンス アンド テクノロジー | High manganese duplex stainless steel with excellent hot workability and method for producing the same |
| RU2280707C2 (en) * | 2001-10-30 | 2006-07-27 | Эй Ти Ай Пропертиз, Инк. | Duplex stainless steel, method of making such steel and industrial article made from this steel (versions) |
| SE528375C2 (en) * | 2004-09-07 | 2006-10-31 | Outokumpu Stainless Ab | A suction roll sheath made of steel as well as a method for producing a suction roll sheath |
| DE102006030699B4 (en) * | 2006-06-30 | 2014-10-02 | Daimler Ag | Cast steel piston for internal combustion engines |
| JP5072285B2 (en) * | 2006-08-08 | 2012-11-14 | 新日鐵住金ステンレス株式会社 | Duplex stainless steel |
| DE102006038670B4 (en) * | 2006-08-17 | 2010-12-09 | Federal-Mogul Burscheid Gmbh | High silicon steel material for the production of piston rings and cylinder liners |
| ES2365284T3 (en) * | 2007-01-12 | 2011-09-28 | Rovalma Sa | STEEL TOOLS FOR COLD WORK WITH EXCEPTIONAL SOLDABILITY. |
-
2008
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487172A (en) * | 2019-01-14 | 2019-03-19 | 东北大学 | One kind having excellent thermoplastic two phase stainless steel and preparation method thereof |
| CN113025891A (en) * | 2021-02-08 | 2021-06-25 | 江阴兴澄特种钢铁有限公司 | Duplex stainless steel S32101 steel plate and manufacturing method thereof |
| CN113025891B (en) * | 2021-02-08 | 2022-07-22 | 江阴兴澄特种钢铁有限公司 | Duplex stainless steel S32101 steel plate and manufacturing method thereof |
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| ES2797953T3 (en) | 2020-12-04 |
| CA2722236A1 (en) | 2009-11-19 |
| MX2010012226A (en) | 2010-12-07 |
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| US20110064601A1 (en) | 2011-03-17 |
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| BRPI0912807A2 (en) | 2015-10-13 |
| AU2009247934A1 (en) | 2009-11-19 |
| CA2722236C (en) | 2019-12-24 |
| WO2009138570A1 (en) | 2009-11-19 |
| KR20100133487A (en) | 2010-12-21 |
| EA201001571A1 (en) | 2011-06-30 |
| SI2279276T1 (en) | 2020-08-31 |
| BRPI0912807B1 (en) | 2019-08-20 |
| CN102027147A (en) | 2011-04-20 |
| FI20080360A0 (en) | 2008-05-16 |
| EP2279276A1 (en) | 2011-02-02 |
| PL2279276T3 (en) | 2020-10-19 |
| MX343938B (en) | 2016-11-29 |
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