CN108950386A - A kind of heat-resistant anticorrosive metallic magnesium refining pot and preparation method thereof - Google Patents
A kind of heat-resistant anticorrosive metallic magnesium refining pot and preparation method thereof Download PDFInfo
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- CN108950386A CN108950386A CN201810715038.5A CN201810715038A CN108950386A CN 108950386 A CN108950386 A CN 108950386A CN 201810715038 A CN201810715038 A CN 201810715038A CN 108950386 A CN108950386 A CN 108950386A
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- metallic magnesium
- resistant anticorrosive
- kier
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- 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
- C22C38/005—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
- C22C38/18—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
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- 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)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of metallic magnesium refining pots and preparation method thereof, are prepared using lost foam pattern by vacuumizing；Smelting furnace charging sequence: heat resisting steel → high ferrochrome → low ferrochrome → manganese iron → ferrosilicon → molybdenum-iron；Pouring temperature takes 1620 ± 5 DEG C, and the duration of pouring is 30~50s, and pouring procedure is the riser gating of kier side wall；Then it is put into heat-treatment furnace and heats after pour mass being cleared up, heating temperature is 1050~1100 DEG C, keeps the temperature 1.8~2.5h；Be subsequently placed into oil sump, it is cold to carry out oil: pot mouth round edge of then polishing, then riser is removed in machining；It is finally whether qualified by ultrasound examination kier, final classification storage.The kier that the present invention obtains has the intensity and good thermal creep, anticorrosive property of heat resistance, is greatly improved the safety in utilization and reliability of kier.
Description
Technical field
The invention belongs to metallic magnesium refining equipment preparation technical fields, and in particular to a kind of heat-resistant anticorrosive metallic magnesium refining pot
And preparation method thereof.
Background technique
Kier is the smelting equipment in metallic magnesium refining equipment, and effect is melting crude magnesium, improves the purity of magnesium, for gold
Belong to magnesium raw material user and functional, the few magnesium metal of impurity is provided, has the function of melting crude magnesium, transfer metal magnesium liquid etc..
Kier is the key equipment of refined metals magnesium, has the function of melting crude magnesium, and use condition is severe, and operating condition is especially disliked when melting
It is bad, except the high temperature corrosion, thermal creep in addition to by normal hot environment, also by magnesium liquid to pot；In addition, due to magnesium metal fusion process
Environment is especially severe, in fact it could happen that many unpredictable factors, the impact such as coal gas to pot wall, corrosive liquid is exceeded and gravity
Aggravation destroys kier under effect situation.The quality of its performance is most important to fusion process.Once kier damage leads to gold
Belong to magnesium liquid leakage, catastrophic safety accident will be caused.
Metallic magnesium refining pot has two kinds of forms of integral pot and compound pot, and wherein integral pot has high temperature resistant property good, and heat is compacted
Be denaturalized it is small, the advantages that corrosion resistance and good, smelting equipment used by most refined magnesium enterprises.Currently, integral pot mainly uses
Sand casting has the advantages that preparation process is simple, but heat resisting steel is being smelted in crystallization process, and there are interior tissue unevenness
Even property, coarse grains, plasticity, toughness deteriorate seriously, and steel-casting has the casting flaw for being difficult to avoid completely, such as contracts
Pine, stomata, sand holes etc. necessarily cause kier security reliability to decline；Simultaneously as alloying element formula is unreasonable, cause
Kier poor corrosion resistance, thermal creep is big, these reasons are all that kier is caused stomata leakage occur or deform seriously to lead
Pot cracking is caused, and then catastrophic safety accident occurs.In Yulin City sky dragon Mei Ye Co., Ltd, the coalification of Taida of Fugu County
Co., Ltd, the actual uses such as Fugu Jing Fu coalification Co., Ltd show that integrated sand casting pot poor heat resistance is anti-
Phenomena such as thermal creep is poor, and antiseptic property is poor is than more serious, restriction metallic magnesium refining production.Therefore, it is badly in need of what use was newly formulated
Material composition and preparation method improve heat resistance, thermal creep and the Corrosion Protection of kier.
Summary of the invention
The purpose of the present invention is to provide a kind of heat-resistant anticorrosive metallic magnesium refining pots and preparation method thereof, to overcome existing skill
Art there are the problem of, kier that the present invention obtains has the intensity and good thermal creep, anticorrosive property of heat resistance, can be big
The big safety in utilization and reliability for improving kier.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
The chemical component of a kind of heat-resistant anticorrosive metallic magnesium refining pot, the heat-resistant anticorrosive metallic magnesium refining pot includes: with matter
Amount score meter, C:0.4%~0.65%, Cr:16%~21%, Mn:3%~5%, Si:1.6%~2.0%, Ni:0.1%~
0.2%, Mo:0.02%~0.03%, N:0.6%~1.2%, S: < 0.02%, P: < 0.02%, rare earth: 0.12%~
0.2%, surplus Fe.
A kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot, comprising the following steps:
Step 1: sequentially added into smelting furnace heat resisting steel, high ferrochrome, low ferrochrome, manganese iron, ferrosilicon, molybdenum-iron and rare earth into
Row melting is passed through protection gas in fusion process, is poured using lost foam pattern by vacuumizing to be poured after melting
Injection body；
Step 2: pour mass being heat-treated, it is cold that oil is carried out after heat treatment；
Step 3: pot mouth round edge is polished after oil is cold to get heat-resistant anticorrosive metallic magnesium refining pot, the heat-resistant anticorrosive is arrived
The chemical component of metallic magnesium refining pot includes: C:0.4%~0.65% based on mass fraction, Cr:16%~21%, Mn:3%
~5%, Si:1.6%~2.0%, Ni:0.1~0.2%, Mo:0.02~0.03%, N:0.6~1.2%, S: < 0.02%, P:
< 0.02%, rare earth: 0.12~0.2%, surplus Fe.
Further, pouring temperature is 1615 DEG C~1625 DEG C in step 1, and the duration of pouring is 30s~50s.
Further, protection gas described in step 1 is nitrogen.
Further, pouring procedure is side wall riser gating in step 1.
Further, it polishes in step 3 after pot mouth round edge, riser is removed using machining to get heat-resistant anticorrosive metal is arrived
Magnesium kier.
Further, heat treatment temperature is 1050 DEG C~1100 DEG C in step 2, and the time is 1.8h~2.5h.
Compared with prior art, the invention has the following beneficial technical effects:
Kier optimization of Chemical Composition design of the present invention, the alloying elements cr added, Mo, N etc., which have, improves tissue cause
Close property, thinning microstructure, the effect for strengthening crystal boundary, in addition reduce the harmful elements such as S, P, improve kier heat resistance, anticorrosive property
It is acted on heat creep resistance.
Kier of the present invention, which passes through, vacuumizes lost foam casting process, has refined alloy structure, has reduced blow hole, interior
Tissue crystals of portion direction is consistent with kier gravity direction, substantially increases the heat resistance and anticorrosive property of kier, controls
Thermal creep；One-pass molding shortens the manufacturing cycle, and material is reusable, reduces production cost.
Further, kier heat treatment process of the invention can guarantee that kier has preferably comprehensive mechanical property
(Nai Gaowen≤800 DEG C, thermal creep≤0.05nm/h).
Detailed description of the invention
Fig. 1 is refining furnace schematic perspective view of the invention；
Fig. 2 is refining furnace stereochemical structure cross-sectional view of the invention；
Fig. 3 is refining furnace main view of the invention；
Fig. 4 is refining furnace side view of the invention；
Fig. 5 is refining furnace top view of the invention.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing:
A kind of heat-resistant anticorrosive metallic magnesium refining pot, the chemical component mass percent of metallic magnesium refining pot design are as follows: 0.4%
~0.65%C (carbon), 16%~21%Cr (chromium), 3%~5%Mn (manganese), 1.6%~2.0%Si (silicon), 0.1%~0.2%
Ni (nickel), 0.02%~0.03%Mo (molybdenum), 0.6%~1.2%N (nitrogen), < 0.02%S (sulphur), < 0.02%P, rare earth:
0.12%~0.2%, surplus is Fe (iron).
The method that above-mentioned kier preparation method uses evaporative pattern to vacuumize utilizes evaporative pattern (expandable polystyrene
Resin beads) the integrated kier of casting acquisition.
A kind of preparation method of metallic magnesium refining pot, comprising the following steps:
Step 1, it according to integrally casting kier material mating and design drawing (as shown in Figures 1 to 5), formulates corresponding
Casting technique；It is prepared using lost foam pattern by vacuumizing；Smelting furnace charging sequence: heat resisting steel → high ferrochrome → low chromium
Iron → manganese iron → ferrosilicon → molybdenum-iron → rare earth carries out melting, and protection gas nitrogen is passed through in fusion process, is poured after melting；It pours
Note temperature takes 1620 ± 5 DEG C, and the duration of pouring is 30~50s, and pouring procedure is the riser gating of kier side wall；
Step 2, it is put into heat-treatment furnace and heats after pour mass being cleared up, heating temperature is 1050~1100 DEG C, heat preservation 1.8
~2.5h；It is subsequently placed into oil sump, it is cold to carry out oil:
Step 3, polishing pot mouth round edge, then riser is removed in machining；
Step 4, finally whether qualified by ultrasound examination kier, final classification storage.
Below with reference to embodiment, the present invention will be described in detail:
Embodiment 1
A kind of heat-resistant anticorrosive metallic magnesium refining pot, the chemical component mass percent of metallic magnesium refining pot design are as follows: 0.4%
C, 16%Cr, 3%Mn, 1.6%Si, 0.1%Ni, 0.02%Mo, 0.6%N, 0.01%S, 0.01%P, 0.12% rare earth, it is remaining
Amount is Fe.
The method that above-mentioned kier preparation method uses evaporative pattern to vacuumize utilizes evaporative pattern (expandable polystyrene
Resin beads) the integrated kier of casting acquisition.
A kind of preparation method of metallic magnesium refining pot, comprising the following steps:
Step 1, it according to integrally casting kier material mating and design drawing (as shown in Figures 1 to 5), formulates corresponding
Casting technique；It is prepared using lost foam pattern by vacuumizing；Smelting furnace charging sequence: heat resisting steel → high ferrochrome → low chromium
Iron → manganese iron → ferrosilicon → molybdenum-iron → rare earth carries out melting, and protection gas nitrogen is passed through in fusion process, is poured after melting；It pours
Note temperature takes 1615 DEG C, duration of pouring 30s, and pouring procedure is the riser gating of kier side wall；
Step 2, it is put into heat-treatment furnace and heats after pour mass being cleared up, heating temperature is 1050 DEG C, keeps the temperature 1.8h；Then
It is put into oil sump, it is cold to carry out oil:
Step 3, polishing pot mouth round edge, then riser is removed in machining；
Step 4, finally whether qualified by ultrasound examination kier, final classification storage.
Embodiment 2
A kind of heat-resistant anticorrosive metallic magnesium refining pot, the chemical component mass percent of metallic magnesium refining pot design are as follows:
0.65%C, 21%Cr, 5%Mn, 2.0%Si, 0.2%Ni, 0.03%Mo, 1.2%N, 0.018%S, 0.018%P, 0.2%
Rare earth, surplus Fe.
The method that above-mentioned kier preparation method uses evaporative pattern to vacuumize utilizes evaporative pattern (expandable polystyrene
Resin beads) the integrated kier of casting acquisition.
A kind of preparation method of metallic magnesium refining pot, comprising the following steps:
Step 1, it according to integrally casting kier material mating and design drawing (as shown in Figures 1 to 5), formulates corresponding
Casting technique；It is prepared using lost foam pattern by vacuumizing；Smelting furnace charging sequence: heat resisting steel → high ferrochrome → low chromium
Iron → manganese iron → ferrosilicon → molybdenum-iron → rare earth carries out melting, and protection gas nitrogen is passed through in fusion process, is poured after melting；It pours
Note temperature takes 1625 DEG C, duration of pouring 50s, and pouring procedure is the riser gating of kier side wall；
Step 2, it is put into heat-treatment furnace and heats after pour mass being cleared up, heating temperature is 1100 DEG C, keeps the temperature 2.5h；Then
It is put into oil sump, it is cold to carry out oil:
Step 3, polishing pot mouth round edge, then riser is removed in machining；
Step 4, finally whether qualified by ultrasound examination kier, final classification storage.
Embodiment 3
A kind of heat-resistant anticorrosive metallic magnesium refining pot, the chemical component mass percent of metallic magnesium refining pot design are as follows: 0.5%
C, 18%Cr, 4%Mn, 1.8%Si, 0.15%Ni, 0.025%Mo, 1%N, 0.015%S, 0.015%P, 0.16% rare earth,
Surplus is Fe.
The method that above-mentioned kier preparation method uses evaporative pattern to vacuumize utilizes evaporative pattern (expandable polystyrene
Resin beads) the integrated kier of casting acquisition.
A kind of preparation method of metallic magnesium refining pot, comprising the following steps:
Step 1, it according to integrally casting kier material mating and design drawing (as shown in Figures 1 to 5), formulates corresponding
Casting technique；It is prepared using lost foam pattern by vacuumizing；Smelting furnace charging sequence: heat resisting steel → high ferrochrome → low chromium
Iron → manganese iron → ferrosilicon → molybdenum-iron → rare earth carries out melting, and protection gas nitrogen is passed through in fusion process, is poured after melting；It pours
Note temperature takes 1620 DEG C, duration of pouring 40s, and pouring procedure is the riser gating of kier side wall；
Step 2, it is put into heat-treatment furnace and heats after pour mass being cleared up, heating temperature is 1080 DEG C, keeps the temperature 2h；Then put
Enter in oil sump, it is cold to carry out oil:
Step 3, polishing pot mouth round edge, then riser is removed in machining；
Step 4, finally whether qualified by ultrasound examination kier, final classification storage.
10 more than one piece of integrally casting kier is produced using the method for embodiment 3, carries out type approval test；It is produced by the present invention
Kier Nai Gaowen≤800 DEG C, thermal creep≤0.05nm/h, tracking structure show the kier performance of the method for the present invention preparation
Securely and reliably, using after three months, there is not the defects of stomata, crackle through detection is internal, deformation quantity is no more than 50nm, using effect
Well, it is ensured that kier is safe and reliable in use, improves service life, reduces security risk, reduces life
Cost is produced, there is preferable popularization and use and development prospect.
Claims (7)
1. a kind of heat-resistant anticorrosive metallic magnesium refining pot, which is characterized in that the chemical component of the heat-resistant anticorrosive metallic magnesium refining pot
It include: C:0.4%~0.65% based on mass fraction, Cr:16%~21%, Mn:3%~5%, Si:1.6%~2.0%,
Ni:0.1%~0.2%, Mo:0.02%~0.03%, N:0.6%~1.2%, S: < 0.02%, P: < 0.02%, rare earth:
0.12%~0.2%, surplus Fe.
2. a kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot, which comprises the following steps:
Step 1: sequentially adding heat resisting steel, high ferrochrome, low ferrochrome, manganese iron, ferrosilicon, molybdenum-iron and rare earth into smelting furnace and melted
It refines, is passed through protection gas in fusion process, be poured to obtain pour mass by vacuumizing using lost foam pattern after melting；
Step 2: pour mass being heat-treated, it is cold that oil is carried out after heat treatment；
Step 3: pot mouth round edge is polished after oil is cold to get heat-resistant anticorrosive metallic magnesium refining pot, the heat-resistant anticorrosive metal is arrived
The chemical component of magnesium kier includes: C:0.4%~0.65% based on mass fraction, and Cr:16%~21%, Mn:3%~
5%, Si:1.6%~2.0%, Ni:0.1~0.2%, Mo:0.02~0.03%, N:0.6~1.2%, S: < 0.02%, P: <
0.02%, rare earth: 0.12~0.2%, surplus Fe.
3. a kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot according to claim 2, which is characterized in that step 1
Middle pouring temperature is 1615 DEG C~1625 DEG C, and the duration of pouring is 30s~50s.
4. a kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot according to claim 2, which is characterized in that step 1
Described in protection gas be nitrogen.
5. a kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot according to claim 2, which is characterized in that step 1
Middle pouring procedure is side wall riser gating.
6. a kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot according to claim 5, which is characterized in that step 3
After middle polishing pot mouth round edge, riser is removed using machining to get heat-resistant anticorrosive metallic magnesium refining pot is arrived.
7. a kind of preparation method of heat-resistant anticorrosive metallic magnesium refining pot according to claim 2, which is characterized in that step 2
Middle heat treatment temperature is 1050 DEG C~1100 DEG C, and the time is 1.8h~2.5h.
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| CN201810715038.5A CN108950386B (en) | 2018-06-29 | 2018-06-29 | Heat-resistant anticorrosive metal magnesium refining kettle and preparation method thereof |
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| CN201810715038.5A CN108950386B (en) | 2018-06-29 | 2018-06-29 | Heat-resistant anticorrosive metal magnesium refining kettle and preparation method thereof |
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| CN108950386B CN108950386B (en) | 2021-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214527A (en) * | 2022-01-17 | 2022-03-22 | 遵义钛业股份有限公司 | Refining tank for crude magnesium |
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| US4450006A (en) * | 1980-10-22 | 1984-05-22 | Norioki Uyehara | Martensitic stainless steel |
| CN1309187A (en) * | 1999-03-26 | 2001-08-22 | 中国科学院金属研究所 | Anticavitation and antiwear steel for hydraulic machinery |
| CN104846295A (en) * | 2014-02-13 | 2015-08-19 | 丰田自动车株式会社 | Austenite heat-resisting cast steel |
| CN105886956A (en) * | 2016-07-01 | 2016-08-24 | 东北大学 | Economical duplex stainless steel sheet and preparation method thereof |
| CN106244940A (en) * | 2016-08-26 | 2016-12-21 | 天津新伟祥工业有限公司 | A kind of Cr-Mn-N series austenitic heat-resistance steel and preparation method thereof |
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2018
- 2018-06-29 CN CN201810715038.5A patent/CN108950386B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450006A (en) * | 1980-10-22 | 1984-05-22 | Norioki Uyehara | Martensitic stainless steel |
| CN1309187A (en) * | 1999-03-26 | 2001-08-22 | 中国科学院金属研究所 | Anticavitation and antiwear steel for hydraulic machinery |
| CN104846295A (en) * | 2014-02-13 | 2015-08-19 | 丰田自动车株式会社 | Austenite heat-resisting cast steel |
| CN105886956A (en) * | 2016-07-01 | 2016-08-24 | 东北大学 | Economical duplex stainless steel sheet and preparation method thereof |
| CN106244940A (en) * | 2016-08-26 | 2016-12-21 | 天津新伟祥工业有限公司 | A kind of Cr-Mn-N series austenitic heat-resistance steel and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214527A (en) * | 2022-01-17 | 2022-03-22 | 遵义钛业股份有限公司 | Refining tank for crude magnesium |
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