CN107699661A - A kind of stainless steel processing process - Google Patents
A kind of stainless steel processing process Download PDFInfo
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- CN107699661A CN107699661A CN201710936398.3A CN201710936398A CN107699661A CN 107699661 A CN107699661 A CN 107699661A CN 201710936398 A CN201710936398 A CN 201710936398A CN 107699661 A CN107699661 A CN 107699661A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/005—Manufacture of stainless steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
- C21C7/0685—Decarburising of stainless steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The present invention relates to a kind of stainless steel processing process, comprise the following steps：Discarded steel and slag former are added into smelting furnace, is configured to obtain original charging；Vacuumize process is carried out to smelting furnace, smelting furnace is heated, so that original charging is warming up to the first temperature, stands the very first time, chromansil, albronze are sequentially added after air pressure to the first pressure being passed through in nitrogen regulation smelting furnace, melting pours into refining furnace after the very first time；Oxygen is passed through to refining furnace with the first default air velocity, smelt and argon gas is passed through to refining furnace with the second default air velocity after the second time, smelt and add the first dopant after reaching second temperature to the liquid steel temperature in refining furnace after the 3rd time, the 4th time was stirred with the first mixing speed；When the temperature of molten steel is three temperature, carries out throwing operation and obtain the stainless steel.The stainless steel that the present invention is prepared has stronger hardness and toughness, meets practical application request.
Description
Technical field
The present invention relates to stainless steel processing technique field, more particularly to a kind of stainless steel processing process.
Background technology
In modern industrial production application, stainless steel is sent out as a kind of very common construction material for Process of Urbanization Construction
Exhibition plays an important role.
In general, it is stainless steel, geneva that stainless steel can be divided mainly into austenite (Austenite) according to the difference that it is organized
Body (Martensite) is stainless steel and ferrite (Ferrite) is stainless steel, is adapted to because of its excellent resistant to rust characteristic
As the purposes such as structural member or the appearance member for requiring decorative effect, such as screw, nut, pivot, latch workpiece；Or such as wrist-watch,
The electronic products such as mobile phone, ornaments, the shell etc. of household electrical appliance.
However, due to the limitation of prior art, existing stainless steel hardness and toughness are poor, can not meet practical application
Demand, there is certain limitation.
The content of the invention
Based on this, the invention aims to propose a kind of stainless steel that can improve stainless steel hardness and toughness
Processing technology, to meet practical application request.
The present invention proposes a kind of stainless steel processing process, wherein, the technique comprises the following steps：
Raw material configures：The slag making of the discarded steel and the second mass fraction of the first mass fraction is added into a smelting furnace
Agent, original charging is obtained after carrying out mixed configuration；
Melting at initial stage：After carrying out vacuumize process to the smelting furnace, the smelting furnace is heated, so that described molten
The original charging in furnace is warming up to the first temperature, and after standing the very first time, nitrogen regulation is passed through into the smelting furnace
Chromansil, albronze are sequentially added after air pressure to first pressure in the smelting furnace, melting pours into essence after the very first time
Furnace；
Later stage refines：Oxygen is passed through to the refining furnace with the first default air velocity, with second after the second time of smelting
Default air velocity is passed through argon gas to the refining furnace, smelts and reaches the to the liquid steel temperature in the refining furnace after the 3rd time
The first dopant is added after two temperature, the 4th time was stirred with the first mixing speed；
Continuous casting process：When the temperature of the molten steel in the refining furnace is three temperature, with the speed of the first casting speed
Carry out throwing operation and obtain the stainless steel.
Stainless steel processing process proposed by the present invention, the original charging of preset quality proportioning is added first in smelting furnace,
Then menarche melting and later stage refining, finally obtain stainless steel product by continuous casting work again.Due to melting in the early stage
Cheng Zhong, heating operation is carried out again after vacuumize process is carried out to smelting furnace, and the air pressure in smelting furnace is more than atmospheric pressure
Under the conditions of the chromansil and albronze that add, the setting is favorably improved the integral hardness of stainless steel to a certain extent
And toughness, the total quality of product is improved, meets practical application request.
The stainless steel processing process, wherein, first mass fraction is 96%~98%, second mass fraction
For 2%~4%.
The stainless steel processing process, wherein, the temperature range of first temperature is 1605 DEG C~1610 DEG C, described the
One time was 5~7h, and the pressure limit of the first pressure is 1.1~1.25atm.
The stainless steel processing process, wherein, the described first default air velocity is 5~8L/min, second time
Time range be 30~45min.
The stainless steel processing process, wherein, the described second default air velocity is 6~7L/min, the 3rd time
Time range be 1~2h.
The stainless steel processing process, wherein, the temperature range of the second temperature is 1620 DEG C~1625 DEG C, described the
One dopant is at least one of Si, Re, P or S.
The stainless steel processing process, wherein, first mixing speed is 150~180r/min, the 4th time
Time range be 30~50min.
The stainless steel processing process, wherein, the temperature range of the 3rd temperature is 1640 DEG C~1650 DEG C.
The stainless steel processing process, wherein, first casting speed is 1.2~1.6m/min.
The stainless steel processing process, wherein, the slag former is calcirm-fluoride or calcium oxide.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Fig. 1 is the theory diagram for the stainless steel processing process that first embodiment of the invention proposes.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the disclosure more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Embodiment one
Referring to Fig. 1, for the stainless steel processing process in first embodiment of the invention, wherein, the technique is included such as
Lower step：
S101, raw material configuration：The discarded steel and the second mass fraction of the first mass fraction are added into a smelting furnace
Slag former, carry out mixed configuration after obtain original charging.
Specifically, according to default mass fraction percentage, discarded steel and slag former are added into smelting furnace, its
In, the mass fraction for discarding steel is 96%~98%, and the mass fraction of slag former is 2%~4%.To the slag former
Speech, the slag former can be calcirm-fluoride or calcium oxide.In the present embodiment, the slag former is calcirm-fluoride.
S102, melting at initial stage：After carrying out vacuumize process to the smelting furnace, the smelting furnace is heated, so that
The original charging in the smelting furnace is warming up to the first temperature, and after standing the very first time, nitrogen is passed through into the smelting furnace
Chromansil, albronze are sequentially added after air pressure to first pressure described in controlled atmosphere section in smelting furnace, after the melting very first time
Pour into refining furnace.
Wherein, after original charging is added into the melting, then by the smelting furnace vacuumize process, then added
Heat is to the first temperature.Wherein, the temperature range of first temperature is 1605 DEG C~1610 DEG C.Then 5~7h is stood, to the melting
Nitrogen is passed through in stove and adjusts air pressure to addition chromansil, albronze after 1.1~1.25atm, is poured into after continuing 5~7h of melting
In refining furnace.
In the early stage in melting step, heating operation is carried out again after carrying out vacuumize process to smelting furnace, and in smelting furnace
Interior air pressure is more than the chromansil and albronze added under conditions of atmospheric pressure, and the setting helps somewhat to
The integral hardness and toughness of stainless steel are improved, improves the total quality of stainless steel product.
S103, later stage refining：Oxygen is passed through to the refining furnace with the first default air velocity, smelt after the second time with
Second default air velocity is passed through argon gas to the refining furnace, is arrived after the 3rd time of smelting to the liquid steel temperature in the refining furnace
The first dopant is added after up to second temperature, the 4th time was stirred with the first mixing speed.
In the present embodiment, the described first default air velocity is 5~8L/min, and the time range of second time is
30~45min.Described second default air velocity is 6~7L/min, and the time range of the 3rd time is 1~2h.It is described
The temperature range of second temperature is 1620 DEG C~1625 DEG C.
For first dopant, first dopant is at least one of Si, Re, P or S.In addition, entering
During row stirring, corresponding mixing speed is 150~180r/min, and the time range of the 4th time is 30~50min.
S104, continuous casting process：When the temperature of the molten steel in the refining furnace is three temperature, with the first casting speed
Speed carries out throwing operation and obtains the stainless steel.
When liquid steel temperature in stove to be refined reaches 1640 DEG C~1650 DEG C, continuous casting work is proceeded by, specifically, with
1.2~1.6m/min casting speed carries out throwing operation, to finally give stainless steel.
Stainless steel processing process proposed by the present invention, the original charging of preset quality proportioning is added first in smelting furnace,
Then menarche melting and later stage refining, finally obtain stainless steel product by continuous casting work again.Due to melting in the early stage
Cheng Zhong, heating operation is carried out again after vacuumize process is carried out to smelting furnace, and the air pressure in smelting furnace is more than atmospheric pressure
Under the conditions of the chromansil and albronze that add, the setting is favorably improved the integral hardness of stainless steel to a certain extent
And toughness, the total quality of product is improved, meets practical application request.
Embodiment two
A kind of stainless steel processing process, wherein, the technique comprises the following steps：
(1) raw material configures：The discarded steel and second mass fraction of the first mass fraction are added into a smelting furnace
Slag former, original charging is obtained after carrying out mixed configuration.
Specifically, according to default mass fraction percentage, discarded steel and slag former are added into smelting furnace, its
In, the mass fraction for discarding steel is 96%, and the mass fraction of slag former is 4%.For the slag former, in the present embodiment
In, the slag former is calcirm-fluoride.
(2) melting at initial stage：After carrying out vacuumize process to the smelting furnace, the smelting furnace is heated, so that institute
State the original charging in smelting furnace and be warming up to the first temperature, after standing the very first time, nitrogen is passed through into the smelting furnace
Chromansil, albronze are sequentially added after adjusting air pressure to the first pressure in the smelting furnace, is fallen after the melting very first time
Enter refining furnace.
Wherein, after original charging is added into the melting, then by the smelting furnace vacuumize process, then added
Heat is to the first temperature.Wherein, first temperature is 1605 DEG C.Then 5h is stood, nitrogen regulation air pressure is passed through into the smelting furnace
Chromansil, albronze are added after to 1.1atm, is poured into after continuing melting 5h in refining furnace.
In the early stage in melting step, heating operation is carried out again after carrying out vacuumize process to smelting furnace, and in smelting furnace
Interior air pressure is more than the chromansil and albronze added under conditions of atmospheric pressure, and the setting helps somewhat to
The integral hardness and toughness of stainless steel are improved, improves the total quality of stainless steel product.
(3) later stage refines：Oxygen is passed through to the refining furnace with the first default air velocity, smelted after the second time with the
Two default air velocities are passed through argon gas to the refining furnace, are reached after the 3rd time of smelting to the liquid steel temperature in the refining furnace
The first dopant is added after second temperature, the 4th time was stirred with the first mixing speed.
In the present embodiment, the described first default air velocity is 5L/min, and second time is 30min.Described
Two default air velocities are 6L/min, and the 3rd time is 1h, and the second temperature is 1620 DEG C.
For first dopant, first dopant is Si and Re mixture.In addition, it is being stirred
When, corresponding mixing speed is 150r/min, and the 4th time was 30min.
(4) continuous casting process：When the temperature of the molten steel in the refining furnace is three temperature, with the speed of the first casting speed
Rate carries out throwing operation and obtains the stainless steel.
When liquid steel temperature in stove to be refined reaches 1640 DEG C, continuous casting work is proceeded by, specifically, with 1.2m/min's
Casting speed carries out throwing operation, to finally give stainless steel.
Stainless steel processing process proposed by the present invention, the original charging of preset quality proportioning is added first in smelting furnace,
Then menarche melting and later stage refining, finally obtain stainless steel product by continuous casting work again.Due to melting in the early stage
Cheng Zhong, heating operation is carried out again after vacuumize process is carried out to smelting furnace, and the air pressure in smelting furnace is more than atmospheric pressure
Under the conditions of the chromansil and albronze that add, the setting is favorably improved the integral hardness of stainless steel to a certain extent
And toughness, the total quality of product is improved, meets practical application request.
Embodiment three
A kind of stainless steel processing process, wherein, the technique comprises the following steps：
(1) raw material configures：The discarded steel and second mass fraction of the first mass fraction are added into a smelting furnace
Slag former, original charging is obtained after carrying out mixed configuration.
Specifically, according to default mass fraction percentage, discarded steel and slag former are added into smelting furnace, its
In, the mass fraction for discarding steel is 98%, and the mass fraction of slag former is 2%.For the slag former, in the present embodiment
In, the slag former is calcium oxide.
(2) melting at initial stage：After carrying out vacuumize process to the smelting furnace, the smelting furnace is heated, so that institute
State the original charging in smelting furnace and be warming up to the first temperature, after standing the very first time, nitrogen is passed through into the smelting furnace
Chromansil, albronze are sequentially added after adjusting air pressure to the first pressure in the smelting furnace, is fallen after the melting very first time
Enter refining furnace.
Wherein, after original charging is added into the melting, then by the smelting furnace vacuumize process, then added
Heat is to the first temperature.Wherein, first temperature is 1610 DEG C.Then 7h is stood, nitrogen regulation air pressure is passed through into the smelting furnace
Chromansil, albronze are added after to 1.25atm, is poured into after continuing melting 7h in refining furnace.
In the early stage in melting step, heating operation is carried out again after carrying out vacuumize process to smelting furnace, and in smelting furnace
Interior air pressure is more than the chromansil and albronze added under conditions of atmospheric pressure, and the setting helps somewhat to
The integral hardness and toughness of stainless steel are improved, improves the total quality of stainless steel product.
(3) later stage refines：Oxygen is passed through to the refining furnace with the first default air velocity, smelted after the second time with the
Two default air velocities are passed through argon gas to the refining furnace, are reached after the 3rd time of smelting to the liquid steel temperature in the refining furnace
The first dopant is added after second temperature, the 4th time was stirred with the first mixing speed.
In the present embodiment, the described first default air velocity is 8L/min, and second time is 45min.Described
Two default air velocities are 7L/min, and the 3rd time is 1~2h.The second temperature is 1625 DEG C.
For first dopant, first dopant is Si, Re and P mixture.In addition, stirred
When mixing, corresponding mixing speed is 180r/min, and the 4th time was 50min.
(4) continuous casting process：When the temperature of the molten steel in the refining furnace is three temperature, with the speed of the first casting speed
Rate carries out throwing operation and obtains the stainless steel.
When liquid steel temperature in stove to be refined reaches 1650 DEG C, continuous casting work is proceeded by, specifically, with 1.6m/min's
Casting speed carries out throwing operation, to finally give stainless steel.
Stainless steel processing process proposed by the present invention, the original charging of preset quality proportioning is added first in smelting furnace,
Then menarche melting and later stage refining, finally obtain stainless steel product by continuous casting work again.Due to melting in the early stage
Cheng Zhong, heating operation is carried out again after vacuumize process is carried out to smelting furnace, and the air pressure in smelting furnace is more than atmospheric pressure
Under the conditions of the chromansil and albronze that add, the setting is favorably improved the integral hardness of stainless steel to a certain extent
And toughness, the total quality of product is improved, meets practical application request.
Example IV
A kind of stainless steel processing process, wherein, the technique comprises the following steps：
(1) raw material configures：The discarded steel and second mass fraction of the first mass fraction are added into a smelting furnace
Slag former, original charging is obtained after carrying out mixed configuration.
Specifically, according to default mass fraction percentage, discarded steel and slag former are added into smelting furnace, its
In, the mass fraction for discarding steel is 97%, and the mass fraction of slag former is 3%.For the slag former, the slag former can
Think calcirm-fluoride or calcium oxide.In the present embodiment, the slag former is calcirm-fluoride.
(2) melting at initial stage：After carrying out vacuumize process to the smelting furnace, the smelting furnace is heated, so that institute
State the original charging in smelting furnace and be warming up to the first temperature, after standing the very first time, nitrogen is passed through into the smelting furnace
Chromansil, albronze are sequentially added after adjusting air pressure to the first pressure in the smelting furnace, is fallen after the melting very first time
Enter refining furnace.
Wherein, after original charging is added into the melting, then by the smelting furnace vacuumize process, then added
Heat is to the first temperature.Wherein, first temperature is 1607 DEG C.Then 6h is stood, nitrogen regulation air pressure is passed through into the smelting furnace
Chromansil, albronze are added after to 1.2atm, is poured into after continuing melting 6h in refining furnace.
In the early stage in melting step, heating operation is carried out again after carrying out vacuumize process to smelting furnace, and in smelting furnace
Interior air pressure is more than the chromansil and albronze added under conditions of atmospheric pressure, and the setting helps somewhat to
The integral hardness and toughness of stainless steel are improved, improves the total quality of stainless steel product.
(3) later stage refines：Oxygen is passed through to the refining furnace with the first default air velocity, smelted after the second time with the
Two default air velocities are passed through argon gas to the refining furnace, are reached after the 3rd time of smelting to the liquid steel temperature in the refining furnace
The first dopant is added after second temperature, the 4th time was stirred with the first mixing speed.
In the present embodiment, the described first default air velocity is 6.5L/min, and second time is 40min.It is described
Second default air velocity is 6.5L/min, and the 3rd time is 1.5h.The second temperature is 1622 DEG C.
For first dopant, first dopant is Si.In addition, when being stirred, corresponding stirring
Speed is 165r/min, and the 4th time was 40min.
(4) continuous casting process：When the temperature of the molten steel in the refining furnace is three temperature, with the speed of the first casting speed
Rate carries out throwing operation and obtains the stainless steel.
When liquid steel temperature in stove to be refined reaches 1645 DEG C, continuous casting work is proceeded by, specifically, with 1.4m/min's
Casting speed carries out throwing operation, to finally give stainless steel.
Stainless steel processing process proposed by the present invention, the original charging of preset quality proportioning is added first in smelting furnace,
Then menarche melting and later stage refining, finally obtain stainless steel product by continuous casting work again.Due to melting in the early stage
Cheng Zhong, heating operation is carried out again after vacuumize process is carried out to smelting furnace, and the air pressure in smelting furnace is more than atmospheric pressure
Under the conditions of the chromansil and albronze that add, the setting is favorably improved the integral hardness of stainless steel to a certain extent
And toughness, the total quality of product is improved, meets practical application request.
In addition, present invention stainless steel of the hardness for the stainless steel that four embodiments are prepared and prior art by more than
Hardness is contrasted, and comparing result is as shown in the table：
| Embodiment one | Embodiment two | Embodiment three | Example IV | Prior art | |
| Hardness/HV | 215~230 | 223 | 228 | 225 | 160~210 |
As can be seen from the table, the hardness for the stainless steel being prepared by the method for the present invention will be significantly stronger than existing
Stainless steel, the total quality of product is improved, meets practical application request.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of stainless steel processing process, it is characterised in that the technique comprises the following steps：
Raw material configures：The discarded steel of the first mass fraction and the slag former of the second mass fraction are added into a smelting furnace,
Original charging is obtained after carrying out mixed configuration；
Melting at initial stage：After carrying out vacuumize process to the smelting furnace, the smelting furnace is heated, so that the smelting furnace
The interior original charging is warming up to the first temperature, after standing the very first time, is passed through into the smelting furnace described in nitrogen regulation
Chromansil, albronze are sequentially added after air pressure to first pressure in smelting furnace, melting pours into refining furnace after the very first time；
Later stage refines：Oxygen is passed through to the refining furnace with the first default air velocity, preset after smelting for the second time with second
Air velocity is passed through argon gas to the refining furnace, and the second temperature is reached to the liquid steel temperature in the refining furnace after the 3rd time of smelting
The first dopant is added after degree, the 4th time was stirred with the first mixing speed；
Continuous casting process：When the temperature of the molten steel in the refining furnace is three temperature, carried out with the speed of the first casting speed
Throwing operation obtains the stainless steel.
2. stainless steel processing process according to claim 1, it is characterised in that first mass fraction be 96%~
98%, second mass fraction is 2%~4%.
3. stainless steel processing process according to claim 2, it is characterised in that the temperature range of first temperature is
1605 DEG C~1610 DEG C, the very first time is 5~7h, and the pressure limit of the first pressure is 1.1~1.25atm.
4. stainless steel processing process according to claim 3, it is characterised in that the described first default air velocity is 5~
8L/min, the time range of second time is 30~45min.
5. stainless steel processing process according to claim 4, it is characterised in that the described second default air velocity is 6~
7L/min, the time range of the 3rd time is 1~2h.
6. stainless steel processing process according to claim 5, it is characterised in that the temperature range of the second temperature is
1620 DEG C~1625 DEG C, first dopant is at least one of Si, Re, P or S.
7. stainless steel processing process according to claim 6, it is characterised in that first mixing speed be 150~
180r/min, the time range of the 4th time is 30~50min.
8. stainless steel processing process according to claim 1, it is characterised in that the temperature range of the 3rd temperature is
1640 DEG C~1650 DEG C.
9. stainless steel processing process according to claim 1, it is characterised in that first casting speed be 1.2~
1.6m/min。
10. stainless steel processing process according to claim 1, it is characterised in that the slag former is calcirm-fluoride or oxidation
Calcium.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104909A (en) * | 2007-07-26 | 2008-01-16 | 俞荣新 | OOCr13Ni5Mo ultralow-carbon martensitic stainless steel and producing method thereof |
| CN101435056A (en) * | 2008-11-27 | 2009-05-20 | 江苏利达不锈钢有限公司 | Novel low-cost free-cutting stainless steel 303C and manufacturing process thereof |
| CN101818232A (en) * | 2010-05-04 | 2010-09-01 | 董玉银 | Method for producing extra-low-carbon stainless steel by vacuum induction refining |
| CN102728801A (en) * | 2012-07-12 | 2012-10-17 | 屈志 | Production technology of base stock for stainless steel precision casting |
| CN104109813A (en) * | 2014-07-03 | 2014-10-22 | 西南石油大学 | Dual-phase steel for high-expansion-ratio expansion pipes with high oil-gas field produced water corrosion resistance and preparation method thereof |
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2017
- 2017-10-10 CN CN201710936398.3A patent/CN107699661A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104909A (en) * | 2007-07-26 | 2008-01-16 | 俞荣新 | OOCr13Ni5Mo ultralow-carbon martensitic stainless steel and producing method thereof |
| CN101435056A (en) * | 2008-11-27 | 2009-05-20 | 江苏利达不锈钢有限公司 | Novel low-cost free-cutting stainless steel 303C and manufacturing process thereof |
| CN101818232A (en) * | 2010-05-04 | 2010-09-01 | 董玉银 | Method for producing extra-low-carbon stainless steel by vacuum induction refining |
| CN102728801A (en) * | 2012-07-12 | 2012-10-17 | 屈志 | Production technology of base stock for stainless steel precision casting |
| CN104109813A (en) * | 2014-07-03 | 2014-10-22 | 西南石油大学 | Dual-phase steel for high-expansion-ratio expansion pipes with high oil-gas field produced water corrosion resistance and preparation method thereof |
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