CN101018908A - Steel shell for a suction roll and a method of producing a steel product - Google Patents

Steel shell for a suction roll and a method of producing a steel product Download PDF

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Publication number
CN101018908A
CN101018908A CNA2005800300058A CN200580030005A CN101018908A CN 101018908 A CN101018908 A CN 101018908A CN A2005800300058 A CNA2005800300058 A CN A2005800300058A CN 200580030005 A CN200580030005 A CN 200580030005A CN 101018908 A CN101018908 A CN 101018908A
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Prior art keywords
steel
suction roll
draws together
roll shell
ladle draws
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CN101018908B (en
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M·里尔亚斯
P·约翰森
C·比尔格维斯特
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Outokumpu Oyj
Outokumpu Stainless AB
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Outokumpu Oyj
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/50—Suction boxes with rolls
    • 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
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • 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
    • 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
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D21F3/105—Covers thereof

Abstract

The invention relates to a suction roll shell 9 having a plurality of through holes 7. The shell is made of a stainless ferrite-austenite steel having a micro-structure essentially consisting of 35-65 % by volume of ferrite and 35-65 % by volume of austenite. The steel has a composition containing, among other things, 0.005-0.07 C and 0.15-0.30 N, in % by weight. The invention also relates to a suction roll comprising the inventive suction roll shell and a method of producing a steel product.

Description

A kind of steel sheel of suction roll and method of producing product made from steel of being used for
Technical field
The present invention relates to a kind of steel sheel of suction roll (suction roll) and method of producing product made from steel of being used for, in described method, by the cutting operation working steel products such as milling, turning and/or boring.
Background of invention
Stainless steel need to be used to the field of highly corrosion resistant.In the environment of ocean, papermaking and pulp industry and chemical industry, require highly corrosion resistant.An example is the suction roll shell that is used for paper machine, and it is made by stainless steel.One type stainless steel is so-called ferrite and the austenitic duplex steel of comprising.Well-known, the duplex steel combines high mechanical properties and toughness and good anti-corrosion, especially anticorrosion stress-resistant and corrosion fatigue.For corrosion resistance and such as the mechanical performance of solderability, importantly the solvent austenite of steel and ferritic well balanced.In the nearest exploitation of duplex steel, wish to have the 35-65% of comprising ferrite, all the other are austenitic microscopic structures.In the field that requires high strength and good corrosion resistance, the duplex steel more and more can be competed mutually with traditional austenitic stainless steel.In disclosed U.S. Patent application No.2003/0172999, this type of steel have been described.The described steel of describing in this publication are the ferritic-austenitic stainless steels that have basically the microscopic structure of being made up of 35-65 volume % ferrite and 35-65 volume % austenite.It is 0.005-0.07 C that described steel has the percentage by weight of comprising, 0.1-2.0 Si, 3-8 Mn, 19-23 Cr, the chemical composition of 0.15-0.30 N and 0.5-1.7 Ni.Equally also can comprise other element.
Nitrogen is for extremely important the steel described in US2003/0172999, because nitrogen is main austenite organizator and intensity and the corrosion resistance that helps described steel.For this reason, the nitrogen content of described steel should be in the scope of 0.15-0.30% according to estimates, and preferred in the scope of 0.20-0.24%.Yet, lack machinability as the steel type as indicated in previous with this high nitrogen-containing.
In most cases, the stainless steel that is used for specific products must be subjected to the cutting operation of some types, such as milling, and turning or boring.In himself, austenite and duplex stainless steel are to lack machinability, and carry out various measures thus and increase stainless machinability.Known to previous, reduced machinability in the existence of stainless nitrogen in steel.For example in U.S. Patent No. 4,769, in 213, advised a kind ofly being no more than 0.05 weight % by the total content that reduces carbon and nitrogen content so that carbon and nitrogen and increasing the method for the machinability of martensitic stain less steel with this.Yet, to compare with the duplex steel, martensite steel has relatively poor corrosion resistance.About austenitic stainless steel, in U.S. Patent No. 5,482, the content of suggestion carbon and nitrogen should reduce so that the content of carbon or nitrogen all is not more than about 0.035 weight % in 674.The adding that is known that sulphur equally can increase machinability.Therefore, U.S. Patent No. 4,784,828 suggestions should add sulphur so that increase machinability in austenitic stainless steel.Think that equally the content of carbon and nitrogen should be very low, amount to 0.065 weight % at the most.Yet, to compare with the duplex steel, austenitic steel has lower intensity.
U.S. Patent No. 4,964, martensitic stain less steel is used in 924 suggestions in suction roll.In this publication, think because they are difficult to boring, so the ferritic-austenitic duplex stainless steel is not suitable as the material of suction roll.On the contrary, the stainless steel that suggestion is suitable for suction roll shell should be the martensite type, comprising the carbon that is not more than 0.06 a weight % greater than 0, be higher than 0 and be not more than the silicon of 2 a weight %, be higher than 0 and be not more than the manganese of 2 a weight %, the nickel of 3-6 weight %, the chromium of 14-17 weight %, the copper of the molybdenum of 1-3 weight % and from 0.5 to 1.5 a weight %.
The object of the present invention is to provide solution to the problems described above, find a kind ofly to have high strength and good corrosion resistance and be suitable for cutting operation in addition and needn't accept the steel of sulfur adding treatment.Another object of the present invention provides a kind of good corrosion resistance that has, and is easy to the suction roll shell of making by cutting operation.
Summary of the invention
Surprisingly, the inventor finds that the steel of the type of describing not only have high strength and good corrosion resistance, and described material is suitable for cutting operation equally such as turning in above-mentioned US 2003/0172999, milling and boring, and described material is not handled by adding sulphur.The inventor finds that equally described material especially is suitable as the material of paper machine suction roll, and advantageously makes the suction roll shell of this material.Therefore, the present invention relates to the suction roll shell of this material.The present invention can also can be regarded as and be used for cutting operation, the method for using when especially making suction roll shell, but also can be used for making other products, and rotary machine part for example is such as handle.The present invention can also be defined as the purposes of described steel as the workpiece that uses in the cutting operation of steel.
Therefore, the present invention relates to a kind of suction roll shell with a plurality of through holes.Suction roll shell according to the present invention is made by ferritic-austenitic stainless steel, and it has basically the microscopic structure of being made up of the austenite of the ferrite of 35-65 volume % and 35-65 volume %.Described steel form will be in detailed description more detailed description.
The invention still further relates to the suction roll that comprises suction roll shell of the present invention.
In preferred embodiments, described cutting operation comprises at least one through hole of brill, and preferably bores a plurality of holes.In advantageous embodiment especially, described method comprises bores a hundreds of thousands hole.Corresponding length of boring is some kms.Described cutting operation can comprise the turning of the interior outside of described housing equally.
Brief Description Of Drawings
Fig. 1 shows the bending of the blank that is used for suction roll shell.
Fig. 2 shows the blank of crooked and formation housing welded together.
Fig. 3 schematically shows the first step of processing at the housing shown in Fig. 2.
Fig. 4 shows second step of the described housing of processing.
Fig. 5 shows the suction roll shell of finishing.
Fig. 6-9 shows the result of described steel used according to the invention and the contrast test of other steel aspect machinability.
Detailed description of the present invention
The manufacturing of suction roll shell has schematically been described hereinafter.With reference to figure 1, show the first step of making suction roll shell.As shown in fig. 1, the roll bending between two rolls 2,3 of flat substantially blank 1, this is known and there is no need more detailed description here.After bending to basically annular, terminal welded together with described blank 1, so welding point with blank 1 in conjunction with forming parts 9.By ring joint a plurality of parts are combined into housing then, after welding, described housing are heat-treated.How housing 9 that Fig. 3 shows acquisition like this can carry out the process operation such as turning.Fig. 3 shows the cutting element 5 that acts on described surface of shell 9.The purpose of turning operation is to guarantee the smooth surface and the rule of housing 9.Fig. 4 schematically shows the subsequent step of described manufacture method, wherein holes by 6 pairs of housings 9 of drill bit, provides a large amount of through holes 7 to housing whereby.Fig. 5 shows the suction roll shell 8 of completion, and it has cylindrical (circular cylindrical) housing 9 and through hole 7 thereof.Fig. 5 equally schematically shows, and the end of suction roll shell 8 can be by side cover 10 sealings.When using described suction roll shell 8, its inside can be connected to the vacuum source (not shown), makes to draw air by through hole 7 and from the outside, only show the minority hole in described accompanying drawing.Will be recognized that in real world applications the number in hole can be very big, such as 100,000 holes or more.
Suction roll shell was to be made by a kind of material of selling 3RE60 Avesta SRG by name in the past.This steel is a kind of ferritic-austenitic stainless steel, and it has improved its machinability by sulphuring treatment and has had following typical case forms, and percentage by weight is
C 0.02
Si 1.50
Cr 18.5
Ni 4.90
Mo 2.80
N 0.08
S 0.02
The 3RE60 steel is used to make suction roll shell and has used about 30 years, and has good result, and before about 10 years, changes 3RE60 SRG into thereby provide a kind of additive to be used to improve its title of its machinability.Now, described steel is known as 3RE60 Avesta SRG.
Nowadays there is another kind of ferritic-austenitic steel in surprising showing, wherein added high nitrogen-containing, and have compare with the improved 3RE60 Avesta of machinability SRG same good or in some aspects even better machinability.This steel has basically the microstructure of being made up of the austenite of the ferrite of 35-65 volume % and 35-65 volume %, with and chemical composition comprise by weight percentage:
C 0.005
Si 0.1-2.0
Mn 3-8
Cr 19-23
Ni 0.5-1.7
N 0.15-0.3
A kind of steel that is particularly suitable for this application suitably comprises:
The randomly Mo and/or the W of total content no more than 1.0 (Mo+W/2),
Randomly Cu is at most the maximum of 1.0Cu, and surplus is iron and impurity.
For ferrite in the described alloy and austenite organizator, i.e. chromium and nickel equivalent should be preferably following condition:
20＜Cr eq＜24.5
10＜Ni Eq, wherein
Cr eq＝Cr+1.5Si+Mo+2Ti+0.5Nb
Ni eq＝Ni+0.5Mn+30(C+N)+0.5(Cu+Co)。
In useful embodiment, described ladle is drawn together 0.02-0.05C.Suitably, described ladle is drawn together 0.18-0.26N and 20-23Cr advantageously.In preferred embodiments, described ladle is drawn together 0.8-1.70Ni, and even preferred 1.35-1.7Ni.
The steel of this composition has been described in laid-open U.S. Patents application No.2003/0172999.
In especially advantageous embodiment of the present invention, described ladle is drawn together 0.22N, 21.5Cr, 1.5Ni, 0.3Mo, 5Mn and the C that is not more than 0.04.This steel is by OutokumpuStainless AB, and Box 74, SE-77422, and AVESTA sells.This steel is sold with title LDX 2101  by Outokumpu.This is called the registration mark of European Union.Accordingly, described LDX 2101  steel are particularly useful for suction roll shell.The content that copper and silicon especially are fit to is respectively 0.3Cu and 0.7Si.0.3Cu and the standard of 0.7Si (percentage by weight) is used for LDX 2101 .
Compare with for example steel 3RE60 Avesta SRG, the steel of the above-mentioned type has high relatively nitrogen content.As everyone knows, nitrogen tends to damage machinability, so the machinability expection may be relatively poor.Yet surprising discovery is higher than desired effect greatly according to the machinability of steel used in the present invention.
Fig. 6 shows the result of contrast test that LDX2101  steel and other two kinds are called as machinability-improvement austenitic steel of 304L PRODEC  and 316L PRODEC  respectively.Steel 304L PRODEC  has the composition of following percentage by weight:
C 0.02
Si 0.5
Mn 1.5
Cr 18.2
Ni 8.4
Mo does not have basically
N 0.07
S 0.02
Described steel 316L PRODEC  has following composition:
C 0.02
Si 0.5
Mn 1.5
Cr 17.2
Ni 11.2
Mo 2.3
N 0.05
S 0.02
Because the nitrogen content of two kinds of machinability-improved austenitic steel 304L PRODEC  and 316LPRODEC  is markedly inferior to LDX 2101  steel, expects that usually these steel are better than LDX 2101  steel aspect machinability.Yet show that in turning test 2,101 30 minutes process times of  steel of LDX under the situation of using high-speed steel tool, compare with other two kinds of steel and to have significantly higher cutting speed, this is shown in Figure 6.
Fig. 7 shows the result of the additional contrast test of LDX 2101  steel and 304L PRODEC  and 316L PRODEC .Fig. 7 shows the attribute testing of 15 minute process time, and wherein the cutting edge by carbide alloy carries out turning.In this case, LDX 2102  steel are compared with other two kinds of steel, and the cutting speed that is obtained is low a little.Yet described difference also is inappreciable.
Fig. 8 shows another test, wherein steel LDX 2101  is compared with the conventional duplex steel of selling by name 2205.This than LDX 2101  more the steel of high-alloying be standardized (EN1.4462) and in a large amount of application, use.It does not have machinability-improved additive and can not be used for such suction roll shell.2205 have following composition:
C 0.02
Si 0.4
Mn 1.5
Cr 22.2
Ni 5.7
Mo 3.1
N 0.17
S 0.001
In this test, service life of instrument when the cutting edge that utilizes carbide alloy carries out milling relatively.As can be seen from Figure 8, compare with the processing of steel 2005, when processing LDX 2101  steel, the service life of instrument is significantly longer.
At last, figure 9 illustrates another test.In the test shown in Figure 9, LDX2101  steel is compared with three kinds of other steel types that are used for suction roll shell, i.e. 2304 Avesta SRG, 3RE60 Avesta SRG and 2205 Avesta SRG.All steel that are marked as SRG (suction roll grade) improve machinability by adding sulphur.Steel 2304 Avesta SRG have following typical case and form:
C 0.02
Si 0.8
Mn 1.5
Cr 22.7
Ni 4.7
Mo 0.3
N 0.09
S 0.02
Steel 2205 Avesta SRG have following typical case and form:
C 0.017
Si 0.6
Mn 1.35
Cr 22.0
Ni 5.7
Mo 2.9
N 0.13
S 0.02
In test shown in Figure 9, compare the obtainable cutting speed of different materials under the long boring length situation of the 1000mm that does not have tool failures.As finding out among Fig. 9, LDX 2101  significantly are better than machinability-improvement steel 2205 Avesta SRG and 2304 Avesta SRG, and good equally with machinability-improvement steel 3RE60 Avesta SRG in this respect, although LDX2101  comprises significantly more nitrogen than steel 3RE60 Avesta SRG.If can obtain the machinability of described material under the situation that does not have so-called machinability-improvement additive such as sulphur, this will be tangible technical advantage, because these additives will cause a large amount of defectives, such as infringement rollability and damage corrosion resistance.
Should be understood that although described the present invention according to suction roll shell and method, this only is the different aspect of a kind of invention and identical invention, because the method according to this invention is applicable to that manufacturing is according to suction roll shell of the present invention.
By the present invention, in the advantage that is obtained, the housing of finishing has obtained good corrosion resistance.

Claims (19)

1. suction roll shell (9) with a plurality of through holes (7), it is characterized in that described housing made by ferritic-austenitic stainless steel, described steel has basically the microscopic structure of being made up of the austenite of the ferrite of 35-65 volume % and 35-65 volume %, and to have the percentage by weight of comprising be 0.005-0.07 C, 0.1-2.0 Si, 3-8 Mn, 19-23 Cr, 0.5-1.7 Ni, the chemical composition of 0.15-0.30N.
2. a suction roll shell as claimed in claim 1 (9) is characterized in that described ladle draws together
A) the randomly Mo and/or the W of total content no more than 1.0 (Mo+W/2),
B) Cu randomly is at most the maximum of 1.0 Cu, and surplus is iron and impurity, and for ferrite in the described alloy and austenite organizator, i.e. chromium and nickel equivalent satisfy following condition:
c)20＜Cr eq＜24.5
D) 10＜Ni Eq, wherein
e)Cr eq＝Cr+1.5?Si+Mo+2?Ti+0.5?Nb
f)Ni eq＝Ni+0.5?Mn+30(C+N)+0.5(Cu+Co)。
3. a suction roll shell as claimed in claim 1 or 2 (9) is characterized in that described ladle draws together 0.02-0.05C.
4. a suction roll shell as claimed in claim 1 or 2 (9) is characterized in that described ladle draws together the N of 0.18-0.26.
5. a suction roll shell as claimed in claim 1 or 2 (9) is characterized in that described ladle draws together the Cr of 20-23.
6. a suction roll shell as claimed in claim 1 or 2 (9) is characterized in that described ladle draws together the Ni of 0.8-1.70.
7. a suction roll shell as claimed in claim 6 (9) is characterized in that described ladle draws together the Ni of 1.35-1.7.
8. a suction roll shell as claimed in claim 1 or 2 (9) is characterized in that described ladle draws together 0.22 N, 21.5 Cr, 1.5 Ni, 0.3 Mo, 5 Mn, no more than 0.04 C and preferred 0.3 Cu and preferred 0.7 Si.
9. a suction roll (9) is characterized in that, it has basis as arbitrary described suction roll shell (9) among the claim 1-8.
10. method of producing product made from steel, described method comprises provides steel workpiece (1,9), and process described workpiece (1 by cutting operation, 9), it is characterized in that described workpiece (1,9) steel is a ferritic-austenitic stainless steel, described steel has basically the microscopic structure of being made up of the austenite of the ferrite of 35-65 volume % and 35-65 volume %, and to have the percentage by weight of comprising be 0.005-0.07 C, 0.1-2.0 Si, 3-8 Mn, 19-23 Cr, 0.5-1.7 Ni, the chemical composition of 0.15-0.30N.
11. method as claimed in claim 10 is characterized in that described ladle draws together
A) the randomly Mo and/or the W of total content no more than 1.0 (Mo+W/2)
B) Cu randomly is at most the maximum of 1.0 Cu, and surplus is iron and impurity, and for ferrite in the described alloy and austenite organizator, i.e. chromium and nickel equivalent satisfy following condition:
c)20＜Cr eq＜24.5
D) 10＜Ni Eq, wherein
e)Cr eq＝Cr+1.5?Si+Mo+2?Ti+0.5?Nb
f)Ni eq＝Ni+0.5?Mn+30(C+N)+0.5(Cu+Co)。
12. method as claimed in claim 11 is characterized in that described ladle draws together the C of 0.02-0.05.
13. method as claimed in claim 11 is characterized in that described ladle draws together the N of 0.18-0.26.
14. method as claimed in claim 11 is characterized in that described ladle draws together the Cr of 20-23.
15. method as claimed in claim 11 is characterized in that described ladle draws together the Ni of 0.8-1.70.
16. method as claimed in claim 11 is characterized in that described ladle draws together 0.22 N, 21.5 Cr, 1.5 Ni, 0.3 Mo, 5 Mn and no more than 0.04 C.
17., it is characterized in that described cutting operation comprises brill at least one through hole (7) as arbitrary described method among the claim 10-16.
18., it is characterized in that described cutting operation comprises turning as arbitrary described method among the claim 10-17.
19. method as claimed in claim 17 is characterized in that carrying out the boring of at least one through hole (7) after turning step formerly.
CN2005800300058A 2004-09-07 2005-08-19 Steel shell for a suction roll and a method of producing a steel product Active CN101018908B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE0402141A SE528375C2 (en) 2004-09-07 2004-09-07 A suction roll sheath made of steel as well as a method for producing a suction roll sheath
SE04021416 2004-09-07
SE0402141-6 2004-09-07
PCT/SE2005/001220 WO2006041344A1 (en) 2004-09-07 2005-08-19 A steel shell for a suction roll and a method of producing a steel product

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CN2010101506807A Division CN101806009B (en) 2004-09-07 2005-08-19 Steel shell for suction roll and method of producing steel product

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CN101018908A true CN101018908A (en) 2007-08-15
CN101018908B CN101018908B (en) 2012-11-07

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CN102851618A (en) * 2012-09-05 2013-01-02 徐琼 Low nickel stainless steel alloy material and preparation method thereof
CN102851602A (en) * 2012-09-05 2013-01-02 徐琼 Low nickel stainless steel alloy material
CN102864381A (en) * 2012-09-05 2013-01-09 陈敏 Low-nickel stainless steel alloy material
CN102864385A (en) * 2012-09-05 2013-01-09 忻峰 Low-nickel stainless steel alloy
CN102864386A (en) * 2012-09-05 2013-01-09 陈敏 Low-nickel stainless steel alloy material and preparation method
CN102864380A (en) * 2012-09-05 2013-01-09 忻峰 Low-nickel stainless steel alloy 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

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JP6520327B2 (en) * 2015-04-08 2019-05-29 株式会社大林組 Manufacturing method of joint fitting for segment and joint fitting for segment
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Publication number Priority date Publication date Assignee Title
CN102027147A (en) * 2008-05-16 2011-04-20 奥托库姆普联合股份公司 Stainless steel product, use of the product and method of its manufacture
CN102851618A (en) * 2012-09-05 2013-01-02 徐琼 Low nickel stainless steel alloy material and preparation method thereof
CN102851602A (en) * 2012-09-05 2013-01-02 徐琼 Low nickel stainless steel alloy material
CN102864381A (en) * 2012-09-05 2013-01-09 陈敏 Low-nickel stainless steel alloy material
CN102864385A (en) * 2012-09-05 2013-01-09 忻峰 Low-nickel stainless steel alloy
CN102864386A (en) * 2012-09-05 2013-01-09 陈敏 Low-nickel stainless steel alloy material and preparation method
CN102864380A (en) * 2012-09-05 2013-01-09 忻峰 Low-nickel stainless steel alloy 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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SE0402141D0 (en) 2004-09-07
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WO2006041344A8 (en) 2007-05-31
US20150252529A1 (en) 2015-09-10
TW200609363A (en) 2006-03-16
PL1786975T3 (en) 2010-03-31
BRPI0514969A (en) 2008-07-01
SI1786975T1 (en) 2010-01-29
DE602005016943D1 (en) 2009-11-12
SE528375C2 (en) 2006-10-31
CN101018908B (en) 2012-11-07
BRPI0514969B1 (en) 2018-05-15
JP4758430B2 (en) 2011-08-31
KR20070110246A (en) 2007-11-16
JP2008512579A (en) 2008-04-24
CA2584275C (en) 2016-11-15
SE0402141L (en) 2006-03-08
CN101806009B (en) 2012-08-22
EA200700421A1 (en) 2007-10-26
EP1786975B1 (en) 2009-09-30
ATE444394T1 (en) 2009-10-15
EP1786975A1 (en) 2007-05-23
ES2333737T3 (en) 2010-02-26
US20070248484A1 (en) 2007-10-25
CA2584275A1 (en) 2006-04-20
WO2006041344A1 (en) 2006-04-20
CN101806009A (en) 2010-08-18

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