CN106756559A - A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof - Google Patents
A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof Download PDFInfo
- Publication number
- CN106756559A CN106756559A CN201611227347.5A CN201611227347A CN106756559A CN 106756559 A CN106756559 A CN 106756559A CN 201611227347 A CN201611227347 A CN 201611227347A CN 106756559 A CN106756559 A CN 106756559A
- Authority
- CN
- China
- Prior art keywords
- sulfuric acid
- stainless steel
- resistance
- temperature
- acid corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The present invention provides a kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof, and energy Resistance to Concentrated Sulfuric Acid Corrosion, with good mechanical performance and welding performance, can be used to produce the equipment and pipeline used by the concentrated sulfuric acid.The stainless steel constitutes as follows according to percentage by weight：Cr：13 15%, Ni：13 17%, Si：5.5 6.5%, C：＜ 0.03%, Mn：＜ 2%, Al：≤ 0.30%, N：＜ 0.1%, P：＜ 0.04%, S：＜ 0.02%, Mo：0.75 1.5%, Cu：0.75 1.5%, W：0.5 1%, Sn：0.5 1%, Sb≤0.15%, other trace elements：0.005 0.01%, balance of Fe.The preparation method adds intermediate frequency furnace to smelt the production technology of mother liquor → AOD → LF → casting → electroslag remelting using Consteel electric furnaces.
Description
Technical field
The present invention relates to a kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof, the stainless steel is applicable
Production, processing and use equipment and device in the sulfuric acid of high-temperature high concentration.
Background technology
At present, because production, treatment and the application of high concentrated acid are more and more so that relevant device application is developed,
But because current traditional material equipment is unsatisfactory always, cause the exploitation of high concentrated acid and development to be restricted.It is dense
Sulfuric acid is a kind of highly corrosive strong mineral acid, with strong oxidizing property, while also there is dehydration property, hardly possible volatilization, deep-etching
Property and water imbibition.Both at home and abroad there is alloy content high, high cost, processing characteristics and poor corrosion resistance etc. in product major part at present
Shortcoming.
Shanghai Steel and Iron Research Institute develops for moderate temperature (50-70 DEG C) concentrated sulfuric acid medium not in the 80's
Rust steel, its trade mark is RS-2, and the steel grade sulfuric acid corrosion resistant principle is to add in chromium (Cr)-nickel (Ni)-iron (Fe) base stainless steel
Plus the element such as molybdenum (Mo), copper (Cu), niobium (Nb) quickly generates surface passivated membrane in right amount, the feature request of passivating film is to compare
It is fine and close, be firmly combined with and mechanical property higher, and prevent sulfuric acid from corroding material surface.But RS-2 is in sulfuric acid temperature
Degree is increased to when in uniform temperature, and skin covering of the surface is no longer stablized, it is difficult to resist concentrated sulfuric acid erosion.
Abroad, these materials of the trade mark Carpenter 20cb-3,904L, sanicro28 by adjust Cr, Ni,
The composition range of Mo, Cu reaches corrosion resistant purpose, but the application field of these materials is Dilute Sulphuric Acid Medium.
The series of products that Hastelloy companies of the U.S. develop are applied to high temperature concentrated sulfuric acid field.The typical trade mark has
HC-200, HC-276, HD-205 etc., its principle is to improve Ni contents by vast scale, and Mo contents or Si contents are improved
The generation stability of skin covering of the surface, and then the purpose of high temperature resistant concentrated sulfuric acid corrosion is reached, this just makes the alloy content of product carry significantly
Gao Liao.
The product of Japanese trade mark examined patent publication 59-2737, is characterized in improving Cr, Ni, Mo, silicon (Si) content, makes alloy
Content is up to 80%, have impact on the cost performance of material expansion.
The products such as Sweden trade mark Sandvic SX and KRUPP companies of Germany Nicrofer2509Si7, in sulfuric acid medium
There is a preferably performance, but using breaking into based on Ni bases point, therefore price is costly.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of reasonable in design resistance to dense
Sulfuric acid corrosion high-silicon austenite stainless steel and preparation method thereof, can Resistance to Concentrated Sulfuric Acid Corrosion, and with good mechanical performance and
Welding performance, can be used to produce the equipment and pipeline used by the concentrated sulfuric acid.
The present invention the used technical scheme that solves the above problems is：A kind of Resistance to Concentrated Sulfuric Acid Corrosion is stainless with high-silicon austenite
Steel, it is characterised in that：Constitute as follows according to percentage by weight：Cr：13-15 %, Ni：13-17%, Si：5.5-6.5%, C：＜
0.03%, Mn：＜ 2%, Al：≤ 0.30%, N：＜ 0.1%, P：＜ 0.04%, S：＜ 0.02%, Mo：0.75-1.5%, Cu：0.75-
1.5%, W：0.5-1%, Sn：0.5-1%, Sb≤0.15%, other trace elements：0.005-0.01%, balance of Fe.
The present invention constitutes as follows according to percentage by weight：Cr：14.2 %, Ni：16.8%, Si：5.9%, C：0.02%, Mn：
1.2%, Al:0.15%, N:0.05%, P:0.025%, S:0.01%, Mo：0.9%, Cu：1.1%, W：0.6%, Sn:0.7%, Sb:
0.005%, other trace elements 0.007%, balance of Fe.
The present invention constitutes as follows according to percentage by weight：Cr：14.1 %, Ni：15.2%, Si：5.6%, C：0.026%, Mn：
1.1%, Al：0.17%, N：0.051%, P:0.029%, S：0.015%, Mo：0.92%, Cu：1.2%, W：0.56%, Sn：0.75%,
Sb:0.015%, other trace elements 0.0062%, balance of Fe.
Other trace elements of the present invention are rare earth element.
The hot-working of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel of the present invention is using forging or the shape of rolling
Formula, wherein starting forging temperature are 1060-1080 DEG C, and final forging temperature is more than 850 DEG C, and start rolling temperature is 1120-1140 DEG C, finish to gauge temperature
Degree is more than 900 DEG C.
Resistance to Concentrated Sulfuric Acid Corrosion of the present invention is controlled in 1050-1150 DEG C of model with high-silicon austenite stainless steel solid solubility temperature
In enclosing.
It is water-cooled or wind that the type of cooling of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel of the present invention can be
It is cold.
A kind of preparation method of above-mentioned Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel, it is characterised in that：Step is such as
Under：
（1）, Consteel electric furnaces and intermediate frequency furnace smelt high-silicon austenite stainless steel mother liquor together；
Consteel electric furnaces mother liquor composition constitutes as follows according to percentage by weight：C:0.13%； Si:0.01%；Cr：1.01%；Ni:
14.29%；P:0.008%；Balance of Fe；Tapping temperature is controlled at 1560 DEG C；
Intermediate frequency furnace mother liquor composition constitutes as follows according to percentage by weight：P ＜ 0.02%；Cr:20~30%, Mo:1~3%；It is balance of
Fe；Tapping temperature is 1550~1630 DEG C；
（2）, Consteel electric furnaces mother liquor and intermediate frequency furnace mother liquor blend to AOD furnace and smelted, the weight percent of oxidation stage carbon
Reduction and desulfurization is carried out below 0.005% than content control；The weight percent content of AOD furnace desulfurization phase sulphur is controlled 0.001%
Hereinafter, desulfurization latter stage addition aluminium block carries out deoxidation, prevents carburetting phosphorization, other compositions control from can tap to LF stoves in place, going out
Steel temperature control is at 1460-1500 DEG C.
（3）, LF stoves carry out temperature component fine setting, it is weak blow, feed silk, feed SiCa line 300m, B line 20-25m, final LF stoves iron
Water constitutes as follows according to percentage by weight：Cr：14.2 %, Ni：16.8%, Si：5.9%, C：0.02%, Mn：1.2%, Al:0.15%,
N:0.05%, P:0.025%, S:0.01%, Mo：0.9%, Cu：1.1%, W：0.6%, Sn:0.7%, Sb:0.005%, other are micro
Element 0.007%, balance of Fe；LF stoves molten iron is sent to casting machine by bull ladle, and bull ladle temperature control is in 1380-1400 DEG C, first packet
Bull ladle temperature can be by upper limit control, and secondary bag bull ladle temperature can be by lower limit control；
（4）, carry out electroslag remelting with electroslag refining furnace after casting；Rolled for remelting base, start rolling temperature is 1136 DEG C, eventually
Temperature is rolled higher than 900 DEG C, rolls into the coiled sheet of different size.
To the raw material preheating of Consteel electric furnace mother liquors to 550 DEG C before melting of the present invention.
The present invention compared with prior art, with advantages below and effect：
The present invention is equipped with suitable by a kind of brand-new formula using chromium (Cr), nickel (Ni), silicon (Si), metal molybdenum (Mo), copper (Cu)
When ratio alloying, add the elements such as Sb, Sn, rare earth to carry out microalloying again and be modified, the raising dense sulphur of its high temperature resistant is reached whereby
The purpose of acid attack ability, and with good mechanical performance and welding performance.
Cu and Sb is played an important role to the decay resistance for improving steel, and Cu is easily combined the surface shape for promoting steel with the S in steel
Into Cu2S passivating films, so as to suppress the electrochemical reaction of anode reaction and negative electrode, alleviate corrosion of sulfuric acid at dew point.Sb is added in steel
The corrosion resistance and wearability of steel can be improved.But Cu and Sb is low-melting-point metal element, easily in Grain Boundary Segregation, casting is caused
Base micro-crack., using suitable casting technique, the surface quality of strand and steel plate, this hair can be improved by adjusting Cu, Sb content
Between 0.75-1.5%, Sb is controlled≤0.15% for bright middle Cu contents control.
Cr ferrite formers, improve the corrosion resistance of material, improve the intensity and pyro-oxidation resistance of alloy, fit
When the content of control Cr elements is conducive to controlling chromium nickel equivalent ratio, and then be conducive to controlling the hot-working plastic of the two phase stainless steel
Property, the content of chromium is controlled in 13%≤Cr≤15% in the present invention.
Ni is austenite former, and austenite reduction scope can be expanded to low-temperature space by nickel, and nickel can improve toughness
And ductility, make it easier to process, manufacture and weld, strengthen antiacid corrosion, keep the ability of passivating film and in corrosive medium
In resistance to corrosion, content control in 13%≤Ni≤17%.
Mo is stainless steel and the conventional alloy element of various corrosion resisting alloys.Mo can promote the passivation of alloy, make steel
Surface forms chromium-rich oxide-film, and this containing Cr, the oxide-film of Mo has stability very high, and can effectively suppress chlorine
The spot corrosion that ion causes.Mo is added in alloy of the present invention makes its corrosion potential in sulfuric acid shuffle, and passivation critical current falls sharply,
Content is controlled in 0.75-1%.
C is austenite former, to a certain extent instead of nickel, promotes austenite and stable austenite, when carbon content mistake
Gao Shi, chromium carbide is generated with chromium, and the corrosion resistance and toughness of stainless steel deteriorate, in order to ensure the corrosion resistance of stainless steel, contain
Amount control is below 0.03%.
Si is ferrite former and plays and stablize ferritic effect, also functions to deoxidation additive, improves welding stream
Dynamic property, having when silicone content is too high increases trend and reduction N concentration that interphase is separated out, and content is controlled in 5.5%≤Si≤6.5%.
Mn is the effect of austenite former and stable austenite, and nickel can be replaced to a certain extent, obtains Ovshinsky
Body tissue, while improving nitrogen solid solubility, and then improves the content of nitrogen, and too high manganese is unfavorable to the corrosion-resistant shape of material, and promotes
The formation of metal phase, influences impact flexibility and decay resistance, and content is controlled in Mn≤2%.
Sn can substantially reduce the high-temperature mechanical property of steel, but a small amount of Sn can improve the corrosion resistance of steel, its intensity
Improve, plasticity is but influenceed less.
W is ferrite former, and can improve elevated temperature strength and high temperature resistant croop property, but excessive addition can make
Into the precipitation of brittlement phase, content is controlled in 0.5%≤W≤1%.
N is the Ovshinsky element of volume of stabilization, improves the corrosion resistance of steel, especially resistance to spot corrosion and crevice corrosion behavior, can be with
Improve the intensity of steel, fatigue and croop property, improve the welding performance of material.But cross the hot-working plastic of high nitrogen-containing reduction material
Property, too low nitrogen content can reduce the content of chromium again, and the decay resistance to material is unfavorable, and content is controlled in nitrogen ＜ 0.1%.
P is harmful element, is segregated in crystal boundary or phase boundary, and the corrosion resistance and hot-working character to material are unfavorable, preferably
Control is in P ＜ 0.04%.
S is harmful element, easily forms manganese sulfide and reduces the hot-workability of material with manganese, and calcium forms calcium sulfide, confrontation
Corrosive nature is harmful to, and priority acccess control is in ＜ 0.002%.
Trace element is rare earth element, adds a small amount of rare earth element to improve inoxidizability, elevated temperature strength and creep
Intensity, increases corrosion resistance.
Specific embodiment
The present invention is described in further detail below and by embodiment, and following examples are explanation of the invention
And the invention is not limited in following examples.
A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel, composition constitutes as follows according to percentage by weight：Cr：13-
15 %, Ni：13-17%, Si：5.5-6.5%, C：＜ 0.03%, Mn：＜ 2%, Al：≤ 0.30%, N：＜ 0.1%, P：＜ 0.04%, S：
＜ 0.02%, Mo：0.75-1.5%, Cu：0.75-1.5%, W：0.5-1%, Sn：0.5-1%, Sb≤0.15%, other trace elements：
0.005-0.01%, balance of Fe.Other trace elements are rare earth element.
Table 1 is ten embodiments of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel（Each embodiment component content is attached most importance to
Amount percentage）.
Table 1.
Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel of the invention can be used non-vacuum induction furnace to add electroslag refining furnace
Smelted, it is also possible to add electroslag refining furnace to smelt using vaccum sensitive stove, intermediate frequency furnace, it is also possible to power up slag with electric arc furnaces
Remelting furnace is smelted.
The hot-working of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel of the invention can using forging or rolling in the form of,
Wherein starting forging temperature is 1060-1080 DEG C, and final forging temperature is more than 850 DEG C.Start rolling temperature is 1120-1140 DEG C, and finishing temperature is big
In 900 DEG C.
Resistance to Concentrated Sulfuric Acid Corrosion of the invention is controlled in 1050-1150 DEG C of scope with high-silicon austenite stainless steel solid solubility temperature
It is interior.It is water-cooled or air-cooled that the type of cooling of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel of the invention can be.
A kind of method for adding electroslag refining furnace smelting the following is Consteel electric furnaces, intermediate frequency furnace, AOD furnace, LF stoves：
A kind of preparation method of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel, step is as follows：
（1）, Consteel electric furnaces and intermediate frequency furnace smelt high-silicon austenite stainless steel mother liquor together；
Consteel electric furnaces mother liquor composition constitutes as follows according to percentage by weight：C:0.13%； Si:0.01%；Cr：1.01%；Ni:
14.29%；P:0.008%；Balance of Fe；Tapping temperature is controlled at 1560 DEG C；The raw material of Consteel electric furnace mother liquors can be used
Raw material can be preheating to 550 DEG C by stainless steel waste material, high-quality steel scrap, ferronickel before melting, smelting cost be reduced, in fusion process
Can be by oxygen blast, the appropriate ratio and the content of the appropriate calcirm-fluoride slugging reduction P of addition for increasing lime and dolomite.
Intermediate frequency furnace is used for smelting ferrochrome and ferro-molybdenum, and intermediate frequency furnace mother liquor composition constitutes as follows according to percentage by weight：P ＜
0.02%；Cr:20~30%, Mo:1~3%；Balance of Fe；Tapping temperature is 1550~1630 DEG C.
（2）, Consteel electric furnaces mother liquor and intermediate frequency furnace mother liquor blend to AOD furnace and smelted, the weight of oxidation stage carbon
Degree control carries out reduction and desulfurization below 0.005%.The weight percent content control of AOD furnace desulfurization phase sulphur exists
Less than 0.001%, desulfurization latter stage addition aluminium block carries out deoxidation, prevents carburetting phosphorization, other compositions control from can tap in place to LF
Stove, tapping temperature is controlled at 1460-1500 DEG C.
（3）, LF stoves carry out temperature component fine setting, it is weak blow, feed silk, feed SiCa line 300m, B line 20-25m, final LF stoves iron
Water constitutes as follows according to percentage by weight：Cr：14.2 %, Ni：16.8%, Si：5.9%, C：0.02%, Mn：1.2%, Al:0.15%,
N:0.05%, P:0.025%, S:0.01%, Mo：0.9%, Cu：1.1%, W：0.6%, Sn:0.7%, Sb:0.005%, other are micro
Element 0.007%, balance of Fe；LF stoves molten iron is sent to casting machine by bull ladle, and bull ladle temperature control is in 1380-1400 DEG C, first packet
Bull ladle temperature can be by upper limit control, and secondary bag bull ladle temperature can be by lower limit control；
（4）, carry out electroslag remelting with electroslag refining furnace after casting；It is good according to Surface Quality of Steel Billet after remelting；
Rolled for remelting base, start rolling temperature is 1136 DEG C, and finishing temperature is higher than 900 DEG C, rolls into the coiled sheet of different size,
Sampling detection finds that there is good processing characteristics and good welding performance, mechanical property etc. all to meet requires, corrosive nature：
90%-99.5% concentrated sulfuric acid corrosive nature average corrosion rates can reach below 0.03mm/year.
Above-mentioned preparation method constitutes as follows in final LF stoves molten iron by parameter adjustment according to percentage by weight：Cr：14.1
%, Ni：15.2%, Si：5.6%, C：0.026%, Mn：1.1%, Al：0.17%, N：0.051%, P:0.029%, S：0.015%,
Mo：0.92%, Cu：1.2%, W：0.56%, Sn：0.75%, Sb:0.015%, other trace elements 0.0062%, balance of Fe.
After electroslag remelting, 1138 DEG C of start rolling temperature rolls into the volume of 8mm specifications.
Above content described in this specification is only to structure example explanation of the present invention；And, this hair
The title that bright each several part is taken can also be different, what all constructions according to described in inventional idea of the present invention, feature and principle were done etc.
Effect or simple change, are included in the protection domain of patent of the present invention.
Claims (9)
1. a kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel, it is characterised in that：Constitute as follows according to percentage by weight：
Cr：13-15 %, Ni：13-17%, Si：5.5-6.5%, C：＜ 0.03%, Mn：＜ 2%, Al：≤ 0.30%, N：＜ 0.1%, P：＜
0.04%, S：＜ 0.02%, Mo：0.75-1.5%, Cu：0.75-1.5%, W：0.5-1%, Sn：0.5-1%, Sb≤0.15%, other are micro-
Secondary element：0.005-0.01%, balance of Fe.
2. Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel according to claim 1, it is characterised in that：According to weight hundred
Divide as follows than constituting：Cr：14.2 %, Ni：16.8%, Si：5.9%, C：0.02%, Mn：1.2%, Al:0.15%, N:0.05%, P:
0.025%, S:0.01%, Mo：0.9%, Cu：1.1%, W：0.6%, Sn:0.7%, Sb:0.005%, other trace elements 0.007%,
Balance of Fe.
3. Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel according to claim 1, it is characterised in that：According to weight hundred
Divide as follows than constituting：Cr：14.1 %, Ni：15.2%, Si：5.6%, C：0.026%, Mn：1.1%, Al：0.17%, N：0.051%, P
:0.029%, S：0.015%, Mo：0.92%, Cu：1.2%, W：0.56%, Sn：0.75%, Sb:0.015%, other trace elements
0.0062%, balance of Fe.
4. Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel according to claim 1, it is characterised in that：Described other
Trace element is rare earth element.
5. Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel according to claim 1, it is characterised in that：Described is resistance to dense
In the form of forging or rolling, wherein starting forging temperature is 1060- for the hot-working of sulfuric acid corrosion high-silicon austenite stainless steel
1080 DEG C, final forging temperature is more than 850 DEG C, and start rolling temperature is 1120-1140 DEG C, and finishing temperature is more than 900 DEG C.
6. Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel according to claim 1, it is characterised in that：Described is resistance to dense
Sulfuric acid corrosion is controlled in the range of 1050-1150 DEG C with high-silicon austenite stainless steel solid solubility temperature.
7. Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel according to claim 1, it is characterised in that：Described is resistance to dense
It is water-cooled or air-cooled that the type of cooling of sulfuric acid corrosion high-silicon austenite stainless steel can be.
8. the preparation method of the Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel described in a kind of claim 2, it is characterised in that：
Step is as follows：
（1）, Consteel electric furnaces and intermediate frequency furnace smelt high-silicon austenite stainless steel mother liquor together；
Consteel electric furnaces mother liquor composition constitutes as follows according to percentage by weight：C:0.13%； Si:0.01%；Cr：1.01%；Ni:
14.29%；P:0.008%；Balance of Fe；Tapping temperature is controlled at 1560 DEG C；
Intermediate frequency furnace mother liquor composition constitutes as follows according to percentage by weight：P ＜ 0.02%；Cr:20~30%, Mo:1~3%；It is balance of
Fe；Tapping temperature is 1550~1630 DEG C；
（2）, Consteel electric furnaces mother liquor and intermediate frequency furnace mother liquor blend to AOD furnace and smelted, the weight percent of oxidation stage carbon
Reduction and desulfurization is carried out below 0.005% than content control；The weight percent content of AOD furnace desulfurization phase sulphur is controlled 0.001%
Hereinafter, desulfurization latter stage addition aluminium block carries out deoxidation, prevents carburetting phosphorization, other compositions control from can tap to LF stoves in place, going out
Steel temperature control is at 1460-1500 DEG C；
（3）, LF stoves carry out temperature component fine setting, it is weak blow, feed silk, feed SiCa line 300m, B line 20-25m, final LF stoves molten iron presses
Constitute as follows according to percentage by weight：Cr：14.2 %, Ni：16.8%, Si：5.9%, C：0.02%, Mn：1.2%, Al:0.15%, N:
0.05%, P:0.025%, S:0.01%, Mo：0.9%, Cu：1.1%, W：0.6%, Sn:0.7%, Sb:0.005%, other micro units
Element 0.007%, balance of Fe；LF stoves molten iron is sent to casting machine by bull ladle, and at 1380-1400 DEG C, first packet hangs bull ladle temperature control
Bag temperature can be by upper limit control, and secondary bag bull ladle temperature can be by lower limit control；
（4）, carry out electroslag remelting with electroslag refining furnace after casting；Rolled for remelting base, start rolling temperature is 1136 DEG C, eventually
Temperature is rolled higher than 900 DEG C, rolls into the coiled sheet of different size.
9. preparation method according to claim 8, it is characterised in that：Raw material before melting to Consteel electric furnace mother liquors is pre-
Heat is to 550 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227347.5A CN106756559B (en) | 2016-12-27 | 2016-12-27 | A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227347.5A CN106756559B (en) | 2016-12-27 | 2016-12-27 | A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106756559A true CN106756559A (en) | 2017-05-31 |
| CN106756559B CN106756559B (en) | 2018-09-14 |
Family
ID=58921709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611227347.5A Active CN106756559B (en) | 2016-12-27 | 2016-12-27 | A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106756559B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312937A (en) * | 2017-06-26 | 2017-11-03 | 洛阳双瑞特种装备有限公司 | A kind of the high temperature resistant concentrated sulfuric acid high silicon stainless steel manufacture method and its equipment |
| CN107686926A (en) * | 2017-08-25 | 2018-02-13 | 苏州双金实业有限公司 | A kind of novel austenite stainless steel |
| CN112391566A (en) * | 2020-11-13 | 2021-02-23 | 杭州微熔科技有限公司 | Low-temperature micro-fusion welding anti-corrosion wear-resistant material and preparation method thereof |
| CN112771181A (en) * | 2018-08-29 | 2021-05-07 | 凯密迪公司 | Austenitic stainless steel alloy with superior corrosion resistance |
| CN113528778A (en) * | 2021-06-30 | 2021-10-22 | 中国科学院金属研究所 | Preparation method of superplastic high-silicon austenitic stainless steel |
| CN117660849A (en) * | 2024-01-31 | 2024-03-08 | 成都先进金属材料产业技术研究院股份有限公司 | Phosphorus-controlled 00Cr21Ni13Mn5N high-nitrogen austenitic stainless steel and production method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4889817A (en) * | 1972-03-03 | 1973-11-24 | ||
| CN1295139A (en) * | 1999-11-05 | 2001-05-16 | 日新制钢株式会社 | Titaniferous ultra high strength metastable austenitic stainless steel and its manufacture |
| CN103205655A (en) * | 2013-03-21 | 2013-07-17 | 宝钢不锈钢有限公司 | Sn-containing austenitic stainless steel and manufacturing method thereof |
| CN104313484A (en) * | 2014-11-07 | 2015-01-28 | 江苏天舜金属材料集团有限公司 | Steel for high-strength anti-shaking anti-corrosion reinforcing steel bar and thermal treatment process of steel |
-
2016
- 2016-12-27 CN CN201611227347.5A patent/CN106756559B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4889817A (en) * | 1972-03-03 | 1973-11-24 | ||
| CN1295139A (en) * | 1999-11-05 | 2001-05-16 | 日新制钢株式会社 | Titaniferous ultra high strength metastable austenitic stainless steel and its manufacture |
| CN103205655A (en) * | 2013-03-21 | 2013-07-17 | 宝钢不锈钢有限公司 | Sn-containing austenitic stainless steel and manufacturing method thereof |
| CN104313484A (en) * | 2014-11-07 | 2015-01-28 | 江苏天舜金属材料集团有限公司 | Steel for high-strength anti-shaking anti-corrosion reinforcing steel bar and thermal treatment process of steel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312937A (en) * | 2017-06-26 | 2017-11-03 | 洛阳双瑞特种装备有限公司 | A kind of the high temperature resistant concentrated sulfuric acid high silicon stainless steel manufacture method and its equipment |
| CN107686926A (en) * | 2017-08-25 | 2018-02-13 | 苏州双金实业有限公司 | A kind of novel austenite stainless steel |
| CN112771181A (en) * | 2018-08-29 | 2021-05-07 | 凯密迪公司 | Austenitic stainless steel alloy with superior corrosion resistance |
| CN112391566A (en) * | 2020-11-13 | 2021-02-23 | 杭州微熔科技有限公司 | Low-temperature micro-fusion welding anti-corrosion wear-resistant material and preparation method thereof |
| CN113528778A (en) * | 2021-06-30 | 2021-10-22 | 中国科学院金属研究所 | Preparation method of superplastic high-silicon austenitic stainless steel |
| CN117660849A (en) * | 2024-01-31 | 2024-03-08 | 成都先进金属材料产业技术研究院股份有限公司 | Phosphorus-controlled 00Cr21Ni13Mn5N high-nitrogen austenitic stainless steel and production method thereof |
| CN117660849B (en) * | 2024-01-31 | 2024-06-04 | 成都先进金属材料产业技术研究院股份有限公司 | Phosphorus-controlled 00Cr21Ni13Mn5N high-nitrogen austenitic stainless steel and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106756559B (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106756559B (en) | A kind of Resistance to Concentrated Sulfuric Acid Corrosion high-silicon austenite stainless steel and preparation method thereof | |
| WO2015192391A1 (en) | Rebar and preparation method thereof | |
| CN104651754B (en) | Low alloy steel for high-pressure boiler tube and preparation method thereof | |
| CN103540844A (en) | Low temperature resistant H-shaped steel and production method thereof | |
| CN104438418A (en) | Rolling method of stainless steel mold cast steel ingot by one-heating forming | |
| CN103056548B (en) | High-strength heat-resistant steel gas-shielded solid wire | |
| CN108642365B (en) | High-purity duplex stainless steel smelting process capable of accurately controlling N content | |
| CN106636862A (en) | Technology for smelting super duplex stainless steel for argon oxygen furnace | |
| CN104988283A (en) | Double-phase stainless steel smelting technology | |
| CN106555124B (en) | The preparation method of Gao Ge, high molybdenum ferritic stainless steel | |
| CN110983187A (en) | Novel high-strength weather-resistant pipeline steel X80 steel plate and production method thereof | |
| CN114032461B (en) | High-nitrogen steel with high strength, low yield ratio and high corrosion resistance for marine engineering and preparation method thereof | |
| CN114807760A (en) | Tungsten-containing sulfuric acid dew point corrosion resistant steel and production method thereof | |
| CN109825769A (en) | One kind steel of stainless steel electrode containing molybdenum and preparation method thereof | |
| CN106521332B (en) | A kind of resistance to stress guiding hydrogen induced cracking (HIC) steel plate and its production method | |
| CN111893382B (en) | Food chain stainless steel and preparation method thereof | |
| CN105728614A (en) | Forging method for producing 21-10Mn7Mo welding wire and blank forged by same | |
| CN102296251A (en) | Alloy constructional steel for weld wire, and manufacturing method of alloy constructional steel | |
| CN109825770A (en) | A kind of sulfur-bearing bismuth-containing free cutting stainless steel and preparation method thereof | |
| CN110093557A (en) | A kind of high-strength building weather-resistant steel plate and its production method | |
| CN104611636B (en) | A kind of corrosion-and high-temp-resistant high-strength steel and manufacturing process thereof | |
| CN115094307A (en) | Hot work die steel continuous casting round billet for electroslag remelting and production process thereof | |
| CN105018850A (en) | Low-tungsten-molybdenum heat-resistant corrosion-resistant stainless steel and preparation method thereof | |
| CN107130188A (en) | Welding ferritic stainless steel and its method for refining | |
| CN105803350A (en) | Hot-rolled wire rod for preparation of 21-10Mn7Mo welding wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |