CN105642876B - Spheroidization molten iron heat preserving method - Google Patents
Spheroidization molten iron heat preserving method Download PDFInfo
- Publication number
- CN105642876B CN105642876B CN201610042797.0A CN201610042797A CN105642876B CN 105642876 B CN105642876 B CN 105642876B CN 201610042797 A CN201610042797 A CN 201610042797A CN 105642876 B CN105642876 B CN 105642876B
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- Prior art keywords
- molten iron
- needle punched
- bag
- punched blanket
- temperature
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a kind of spheroidization molten iron heat preserving methods, react, comprise the following steps for liquid iron balling, A, cut needle punched blanket；B, nodulizer is added in nodularization bag, carries out spheroidising；C, carry out taking off slag operation, be kept the temperature using needle punched blanket；D, bag cast has been carried out when molten iron has reached bag temperature；E, after casting complete, needle punched blanket can be attached in the containment wall of nodularization bag.The spheroidization molten iron heat preserving method of the present invention replaces perlite to carry out spheroidization molten iron heat preservation by using molding needle punched blanket, while realizes that pushing off the slag acts on, and reduces slag and is adhered on ladle brick, improves ladle service life.
Description
Technical field
The present invention relates to a kind of hot-metal insulating method, the molten iron in especially bushing back-up roll sleeve heat treatment process is protected
Warm method.
Background technology
Molten iron needs after usual nodularization pull out net slag in ladle, then carry out covering operation using perlite, lead
Syllabus is：（1）Small hot metal temperature drop drops in hot-metal insulating, ensures metallurgical composite quality；（2）Pushing off the slag when adsorbing slag and cast, covering
Perlite molten iron surface be sintered, formed an entirety, the slag that production is reacted in molten iron can be adsorbed.It is floated simultaneously in cast
On molten iron surface, also avoid slag and flow into running gate system with molten iron, play the role of pushing off the slag；（3）The contact with air is reduced, is avoided
Molten iron, which returns sulphur, influences spheroidizing quality.
But using perlite covering there is also it is larger the shortcomings that：1st, perlite is adhered to the brick of ladle inner wall after pouring into a mould
On, very difficult cleaning usually will also carry out molten iron wash bags operation, and ladle can just reached and is continuing with requiring, causes energy consumption
Waste；2nd, perlite is mixed with slag and is sticked in containment wall, causes bag brick intensity low, easily damaged, is reduced ladle and is used the longevity
Life, adds ladle brick use cost.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of spheroidization molten iron heat preserving methods, can need not use pearl
Rock.
In order to solve the above technical problems, the technical solution used in the present invention is：
Spheroidization molten iron heat preserving method, comprises the following steps,
A, the needle punched blanket that thickness is 40 ~ 50mm is chosen, needle punched blanket is cut to by circle according to the inner wall size of nodularization bag；
The thermometer hole of a diameter of 100mm is set among needle punched blanket；
B, nodulizer is added in nodularization bag, molten iron in stove is poured into, spheroidising is carried out in bag；
C, after spheroidising, nodularization bag, which is beaten, tiltedly makes liquid level concordant with bag mouth, and son is taken off by iron using what refractory cement made
Water surface has floated spheroidizing reacion scum silica frost and has clawed, and needle punched blanket is covered in molten iron surface after thoroughly scratching clean and kept the temperature by scum silica frost, is being protected
Molten iron temperature is constantly monitored during temperature；
D, bag cast has been carried out when molten iron has reached bag temperature；
E, after casting complete, needle punched blanket can be attached in the containment wall of nodularization bag, chosen using crooked chisel, will using wire brush
Nodularization bag is cleaned out.
Further improvement of the present invention is：The needle punched blanket is alumina silicate needle punched blanket.
Further improvement of the present invention is：The time of needle punched blanket covering and heat insulating is 10 ~ 30 minutes in step C.
Further improvement of the present invention is：It is even for quick temperature measurement that the instrument of molten iron temperature is detected in step C, quick temperature measurement
The even thermometer hole by needle punched blanket gos deep into nodularization bag carrying out thermometric to molten iron.
Due to the adoption of the above technical scheme, advantageous effect caused by the present invention is：
The spheroidization molten iron heat preserving method of the present invention replaces perlite to carry out spheroidization molten iron guarantor by using molding needle punched blanket
Temperature, while realize that pushing off the slag acts on, it reduces slag and is adhered on ladle brick, improve ladle service life.
The slag of molten iron reaction generation can be adsorbed using needle punched blanket of the present invention, needle punched blanket is covered in molten iron surface and reduces molten iron
Contact with air, molten iron is avoided, which to return sulphur, influences molten steel quality；Needle punched blanket heat-resisting ability by force will not be because of high temperature.
Specific embodiment
Spheroidization molten iron heat preserving method, comprises the following steps,
A, the needle punched blanket that thickness is 40 ~ 50mm is chosen, according to the size of the size design needle punched blanket of nodularization bag, needle punched blanket is set
It puts in the inside of nodularization bag, needle punched blanket is circle, and the internal diameter of diameter and nodularization bag matches；Diameter is cut out among needle punched blanket
For the thermometer hole of 100mm, for measuring the temperature of molten iron.
B, nodulizer is added in nodularization bag, molten iron in stove is poured into, spheroidising is carried out in bag；
C, spheroidizing reacion residue has been floated on molten iron surface after spheroidising, and ladle is beaten tiltedly, and liquid level is concordant with bag mouth, uses
The son of taking off of refractory cement making claws scum silica frost, and needle punched blanket is covered in molten iron surface after thoroughly scratching clean and kept the temperature by scum silica frost,
During insulation is even using quick temperature measurement, and molten iron temperature is detected by needle punched blanket center thermometer hole.Soaking time is 10 ~ 30 minutes.
D, bag cast has been carried out when molten iron has reached bag temperature.
E, after casting complete, needle punched blanket can be attached in the containment wall of nodularization bag, chosen using crooked chisel；Using wire brush just
Nodularization bag can be cleaned out, nodularization bag can recover clean, and satisfaction reuses condition, and complicated cleaning work is not required,
It is time saving and energy saving.
The spheroidization molten iron heat preserving method of the present invention replaces perlite to carry out spheroidization molten iron guarantor by using molding needle punched blanket
Temperature, while realize that pushing off the slag acts on, it reduces slag and is adhered on ladle brick, the service life for improving nodularization bag is doubled.
Claims (1)
1. spheroidization molten iron heat preserving method, it is characterised in that：Comprise the following steps,
A, the needle punched blanket that thickness is 40~50mm is chosen, needle punched blanket is cut to by circle according to the inner wall size of nodularization bag；In pin
It pierces among blanket and the thermometer hole of a diameter of 100mm is set；
B, nodulizer is added in nodularization bag, molten iron in stove is poured into, spheroidising is carried out in bag；
C, after spheroidising, nodularization bag, which is beaten, tiltedly makes liquid level concordant with bag mouth, and son is taken off by molten iron table using what refractory cement made
Face has been floated spheroidizing reacion scum silica frost and has been clawed, and needle punched blanket is covered in molten iron surface after thoroughly scratching clean and kept the temperature by scum silica frost, in soak
Between constantly monitor molten iron temperature；
D, bag cast has been carried out when molten iron has reached bag temperature；
E, after casting complete, needle punched blanket can be attached in the containment wall of nodularization bag, chosen needle punched blanket using crooked chisel, will using wire brush
Nodularization bag is cleaned out；
The needle punched blanket is alumina silicate needle punched blanket；
It is even for quick temperature measurement that the instrument of molten iron temperature is detected in step C, quick temperature measurement is even to go deep into ball by the thermometer hole of needle punched blanket
Change in bag and thermometric is carried out to molten iron；
The time of needle punched blanket covering and heat insulating is 10~30 minutes in step C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042797.0A CN105642876B (en) | 2016-01-22 | 2016-01-22 | Spheroidization molten iron heat preserving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042797.0A CN105642876B (en) | 2016-01-22 | 2016-01-22 | Spheroidization molten iron heat preserving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105642876A CN105642876A (en) | 2016-06-08 |
| CN105642876B true CN105642876B (en) | 2018-05-18 |
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ID=56486410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610042797.0A Active CN105642876B (en) | 2016-01-22 | 2016-01-22 | Spheroidization molten iron heat preserving method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341049A (en) * | 2020-10-29 | 2021-02-09 | 鄂州中融钢宝碳素有限公司 | Lightweight slag stopper and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2809072A1 (en) * | 1977-03-02 | 1978-09-07 | Nippon Kokan Kk | POURING CONTAINERS WITH BASIC LINING AND USING THIS |
| CN2085688U (en) * | 1991-04-05 | 1991-10-02 | 尹士文 | Spheroidized foundry ladle |
| CN201922033U (en) * | 2011-02-16 | 2011-08-10 | 西峡县众德汽车部件有限公司 | Light ladle cover for spheroidizing foundry ladle |
| CN102748562A (en) * | 2012-07-26 | 2012-10-24 | 江苏明江机械制造有限公司 | Support ring of heat-insulating vertical pipe |
| CN202786388U (en) * | 2012-08-02 | 2013-03-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Ladle cover of molten iron spheroidizing ladle |
| CN103820700A (en) * | 2014-01-30 | 2014-05-28 | 南车戚墅堰机车车辆工艺研究所有限公司 | Heat-resisting spheroidal graphite cast iron and preparation method thereof |
-
2016
- 2016-01-22 CN CN201610042797.0A patent/CN105642876B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2809072A1 (en) * | 1977-03-02 | 1978-09-07 | Nippon Kokan Kk | POURING CONTAINERS WITH BASIC LINING AND USING THIS |
| CN2085688U (en) * | 1991-04-05 | 1991-10-02 | 尹士文 | Spheroidized foundry ladle |
| CN201922033U (en) * | 2011-02-16 | 2011-08-10 | 西峡县众德汽车部件有限公司 | Light ladle cover for spheroidizing foundry ladle |
| CN102748562A (en) * | 2012-07-26 | 2012-10-24 | 江苏明江机械制造有限公司 | Support ring of heat-insulating vertical pipe |
| CN202786388U (en) * | 2012-08-02 | 2013-03-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Ladle cover of molten iron spheroidizing ladle |
| CN103820700A (en) * | 2014-01-30 | 2014-05-28 | 南车戚墅堰机车车辆工艺研究所有限公司 | Heat-resisting spheroidal graphite cast iron and preparation method thereof |
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|---|---|
| CN105642876A (en) | 2016-06-08 |
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