CN109371191A - A kind of compactedization inoculation method of vermicular cast iron - Google Patents
A kind of compactedization inoculation method of vermicular cast iron Download PDFInfo
- Publication number
- CN109371191A CN109371191A CN201811336223.XA CN201811336223A CN109371191A CN 109371191 A CN109371191 A CN 109371191A CN 201811336223 A CN201811336223 A CN 201811336223A CN 109371191 A CN109371191 A CN 109371191A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- compactedization
- iron
- cast iron
- iron liquid
- 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.)
- Pending
Links
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000011081 inoculation Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 33
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 33
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 29
- 239000000956 alloy Substances 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 claims abstract description 15
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- NJFMNPFATSYWHB-UHFFFAOYSA-N ac1l9hgr Chemical compound [Fe].[Fe] NJFMNPFATSYWHB-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002054 inoculum Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 7
- 230000001235 sensitizing effect Effects 0.000 claims abstract description 6
- 238000007499 fusion processing Methods 0.000 claims abstract description 4
- 239000013589 supplement Substances 0.000 claims abstract description 3
- 235000013399 edible fruits Nutrition 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 4
- 239000010439 graphite Substances 0.000 abstract description 4
- 206010000117 Abnormal behaviour Diseases 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract 1
- 238000012797 qualification Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910001126 Compacted graphite iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010759 marine diesel oil Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A kind of compactedization inoculation method of vermicular cast iron, it is characterized in that, iron liquid is in the fusion process of intermediate frequency furnace, high-purity rare earth alloy is added into the iron liquid first before tapping, the high-purity rare earth alloy is dissolved sufficiently by the function composite by electromagnetic stirring of the intermediate frequency furnace, carries out creepage rate for the first time, expands the sensitizing range of iron liquid compactedization, compacted chemical conversion power is promoted, vermiculation effect is improved；Inoculant alloy containing rare earth is added into casting ladle after tapping later, carries out secondary creepage rate, supplements residual rare earth, promotes pregnant effect, extends fall time, obtains qualified vermicular cast iron iron liquid for casting pouring.The present invention effectively increases compacted chemical conversion power, expands compactedization sensitive range, increases the inoculation fade time, improves product qualification rate, is particularly suitable for the casting technique of marine diesel compacted graphite cast iron air cylinder sleeve.
Description
Technical field
The present invention relates to a kind of casting techniques, and in particular to one kind is poured for marine diesel cylinder liner rough casting
The note compactedization inoculation method of vermicular cast iron, belongs to casting technology field.
Background technique
Compactedization inoculation method refers to using specific vermiculizer, so that iron liquid graphite in process of setting is largely precipitated and is in
Vermiform is partially in a kind of spherical technique processing method, and obtained material is known as vermicular cast iron.
The mechanical property of vermicular cast iron is close with spheroidal graphite cast-iron, and has the good vibrationproof to match in excellence or beauty with gray cast iron, leads
Heat and casting character, while there is better plasticity and fatigue performance than gray cast iron, it is often more important that, vermicular cast iron is than ash casting
Iron has better wearability.Marine diesel cylinder liner generally uses vermicular graphite iron material, to reach with higher machinery
Intensity, better heat-resistant anti-fatigue performance, longer service life, superior wear-resisting property and lighter weight.And compacted
Change preparation process in, since vermicular cast iron sensitizing range is narrow, different compactedization inoculation treating methods easily cause compactedization excessively with
Bad situation is in spherical or sheet so as to cause Graphite Precipitation, so that material property sharply deteriorates, it is difficult to meet use and want
It asks.
Summary of the invention
It is an object of the present invention to overcome above-mentioned the deficiencies in the prior art, a kind of compactedization side of breeding of vermicular cast iron is provided
Method expands the sensitizing range of iron liquid compactedization, to reach the compacted chemical conversion power of promotion, extension fall time, improve compactedization pregnant effect
Effect.
To achieve the above object, technical scheme is as follows:
A kind of compactedization inoculation method of vermicular cast iron, which is characterized in that iron liquid exists first in the fusion process of intermediate frequency furnace
High-purity rare earth alloy is added before tapping into the iron liquid, keeps the high-purity dilute by the function composite by electromagnetic stirring of the intermediate frequency furnace
Native alloy sufficiently dissolves, and carries out creepage rate for the first time, expands the sensitizing range of iron liquid compactedization, promotes compacted chemical conversion power, improve compactedization
Effect；Inoculant alloy containing rare earth is added into casting ladle after tapping later, carries out secondary creepage rate, supplements residual rare earth,
Pregnant effect is promoted, fall time is extended, obtains qualified vermicular cast iron iron liquid for casting pouring.
As further scheme of the invention, the compactedization inoculation method is comprised the following specific steps that:
1) iron liquid is melted in intermediate frequency furnace；
2) high-purity rare earth alloy is added into iron liquid, and by the function composite by electromagnetic stirring of intermediate frequency furnace, makes high-purity rare earth
Alloy sufficiently melts uniformly, carries out creepage rate for the first time；
3) from intermediate frequency furnace to casting ladle tapping, while inoculant alloy containing rare earth being added into casting ladle, carries out secondary creepage rate；
4) it obtains qualified vermicular cast iron iron liquid and is used for casting pouring.
As further scheme of the invention, content >=95% of the high-purity rare earth alloy, granularity is bulk,
Having a size of 50mm × 80mm × 40mm.
Compared with prior art, the beneficial effects of the present invention are: by using rare earth alloy, the quick of iron liquid compactedization is expanded
Sensillary area improves compacted chemical conversion power；It is improved by the function composite by electromagnetic stirring of intermediate frequency furnace so that the rare earth fusing of infusibility is uniformly
Vermiculation effect；By secondary creepage rate, insufficient residual rare earth is supplemented, pregnant effect is improved, when extending decline
Between, improve production success rate.
Detailed description of the invention
Fig. 1 is operation chart of the invention.
Fig. 2 is process method flow chart of the invention.
In figure: 1- intermediate frequency furnace, 2- iron liquid, 3- high-purity rare earth alloy, 4- inoculant alloy containing rare earth.
Specific embodiment
The present invention is further elaborated with specific embodiment with reference to the accompanying drawing, but cannot be used as a limitation the present invention
Protection scope.
Fig. 1 and Fig. 2 are please referred to, the embodiment of the present invention includes intermediate frequency furnaces 1 and iron liquid 2；The intermediate frequency furnace 1 is existing equipment,
Play the role of melting iron liquid 2 and function composite by electromagnetic stirring to be processed.The iron liquid 2 is main body to be processed, produces vermicular cast iron
Basic material.
The compactedization inoculation method of vermicular cast iron of the present invention, which is characterized in that fusion process of the iron liquid 2 in intermediate frequency furnace 1
In, high-purity rare earth alloy 3 is added into the iron liquid 2 first before tapping, passes through the function composite by electromagnetic stirring of the intermediate frequency furnace 1
It dissolves the high-purity rare earth alloy 3 sufficiently, carries out creepage rate for the first time, expand the sensitizing range of iron liquid compactedization, promote compacted chemical conversion
Power improves vermiculation effect；Inoculant alloy containing rare earth 4 is added into casting ladle after tapping later, carries out secondary creepage rate, mends
Residual rare earth is filled, pregnant effect is promoted, extends fall time；Iron liquid 2 by high-purity rare earth alloy 3 and breeds conjunction containing rare earth
The collective effect of gold 4 reaches qualified compactedization inoculation effect, pours to obtain qualified vermicular cast iron iron liquid for casting
Note.
Specific step is as follows for creepage rate, sees Fig. 2:
1) iron liquid 2 is melted in intermediate frequency furnace 1.
2) high-purity rare earth alloy 3 is added into iron liquid 2, and passes through the function composite by electromagnetic stirring of intermediate frequency furnace 1, keeps high-purity dilute
The sufficiently fusing of native alloy 3 uniformly, carries out creepage rate for the first time；Content >=95% of the high-purity rare earth alloy 3, granularity are block
Shape, having a size of 50mm × 80mm × 40mm.
3) from intermediate frequency furnace 1 to casting ladle tapping, while inoculant alloy containing rare earth 4 being added into casting ladle, carries out secondary compactedization place
Reason, reaches required compactedization pregnant effect.
4) it obtains qualified vermicular cast iron iron liquid and is used for casting pouring.
Unquestionably, present invention is obviously not limited to the details of above-mentioned exemplary embodiment, the marine diesel oil main bearings
The casting method of lid is not limited to the parameter values mentioned in above-described embodiment, should also include other moulding selections and technique
Parameter selection；To sum up, the present invention claims protection scope should also include those be aobvious to those skilled in the art
And the transformation and substitution being clear to.
The present invention is not necessarily to special equipment, by carrying out for the first time to addition high-purity rare earth alloy in furnace in melting treatment process
Creepage rate, it is subsequent that the secondary creepage rate of the progress of inovulant containing rare earth is added in casting ladle, qualified vermicular cast iron iron liquid is obtained,
It is particularly suitable for the casting technique of marine diesel compacted graphite cast iron air cylinder sleeve.
Claims (3)
1. a kind of compactedization inoculation method of vermicular cast iron, which is characterized in that iron liquid is going out first in the fusion process of intermediate frequency furnace
High-purity rare earth alloy is added before iron into the iron liquid, which is made by the function composite by electromagnetic stirring of the intermediate frequency furnace
Alloy sufficiently dissolves, and carries out creepage rate for the first time, expands the sensitizing range of iron liquid compactedization, promotes compacted chemical conversion power, improves compactedization effect
Fruit；Inoculant alloy containing rare earth is added into casting ladle after tapping later, carries out secondary creepage rate, supplements residual rare earth, mentions
Pregnant effect is risen, fall time is extended, obtains qualified vermicular cast iron iron liquid for casting pouring.
2. the compactedization inoculation method of vermicular cast iron according to claim 1, which is characterized in that the compactedization inoculation method packet
Include following specific steps:
1) iron liquid is melted in intermediate frequency furnace；
2) high-purity rare earth alloy is added into iron liquid, and by the function composite by electromagnetic stirring of intermediate frequency furnace, makes high-purity rare earth alloy
Sufficiently fusing uniformly, carries out creepage rate for the first time；
3) from intermediate frequency furnace to casting ladle tapping, while inoculant alloy containing rare earth being added into casting ladle, carries out secondary creepage rate；
4) it obtains qualified vermicular cast iron iron liquid and is used for casting pouring.
3. the compactedization inoculation method of vermicular cast iron according to claim 1 or 2, which is characterized in that the high-purity is dilute
Content >=95% of native alloy, granularity is bulk, having a size of 50mm × 80mm × 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336223.XA CN109371191A (en) | 2018-11-09 | 2018-11-09 | A kind of compactedization inoculation method of vermicular cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336223.XA CN109371191A (en) | 2018-11-09 | 2018-11-09 | A kind of compactedization inoculation method of vermicular cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109371191A true CN109371191A (en) | 2019-02-22 |
Family
ID=65384517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811336223.XA Pending CN109371191A (en) | 2018-11-09 | 2018-11-09 | A kind of compactedization inoculation method of vermicular cast iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109371191A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120090803A1 (en) * | 2005-12-20 | 2012-04-19 | Novacast Technologies Ab | Process for producton of compacted graphite iron |
| CN108624807A (en) * | 2017-08-29 | 2018-10-09 | 西安工业大学 | A kind of high nodulizing rate vermicular cast iron of the high either pearlite occurred of as cast condition and preparation method thereof |
-
2018
- 2018-11-09 CN CN201811336223.XA patent/CN109371191A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120090803A1 (en) * | 2005-12-20 | 2012-04-19 | Novacast Technologies Ab | Process for producton of compacted graphite iron |
| CN108624807A (en) * | 2017-08-29 | 2018-10-09 | 西安工业大学 | A kind of high nodulizing rate vermicular cast iron of the high either pearlite occurred of as cast condition and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105483508B (en) | Alloy vermicular graphite cast iron for railway vehicle brake disc and smelting method thereof | |
| CN103981434B (en) | A kind of preparation method of high tough spheroidal graphite cast iron | |
| CN106435338B (en) | A kind of fire hydrant low-temperature ball spheroidal graphite cast iron material and preparation method thereof | |
| CN102676906B (en) | Preparation method of compacted graphite cast iron | |
| CN109338026A (en) | The manufacturing process of high temperature spheroidal graphite cast-iron | |
| CN108624807A (en) | A kind of high nodulizing rate vermicular cast iron of the high either pearlite occurred of as cast condition and preparation method thereof | |
| CN105401064A (en) | Medium silicon molybdenum nodular cast iron and production method thereof | |
| CN101603142A (en) | A kind of high-intensity high-tenacity ductile cast iron casting and preparation method thereof | |
| CN107365936A (en) | A kind of preparation technology of high-chromium alloy cast-iron | |
| CN103555881B (en) | Manufacturing method of steel ingot for gas cylinder | |
| CN105755360A (en) | Preparation technology of vermicular cast iron with high pearlite and stable vermiculation | |
| CN104962802A (en) | Inoculation agent for camshaft and preparation method and application thereof | |
| CN103484750B (en) | The production method of fuel gas air admission shell heat-proof nodular cast iron | |
| CN104264036B (en) | A kind of functionally gradient cast iron materials and preparation method thereof | |
| CN106048302B (en) | A kind of founding materials for being applied to nuclear power and wind-powered electricity generation and preparation method thereof | |
| CN103602882B (en) | The pouring molten iron of natural aerodynamic cylinder and melting technology thereof | |
| CN109750131B (en) | Method for improving the inoculation effect of ductile iron with ultrasonic assistance | |
| CN109371191A (en) | A kind of compactedization inoculation method of vermicular cast iron | |
| CN110964968B (en) | A kind of vermicularizing agent for high-efficiency vermicular graphite cast iron, its preparation and production method | |
| CN105568124A (en) | QT500-7 nodular cast iron material added with tin, and processing method thereof, and cast | |
| CN102974777A (en) | Hot ladle spheroidizing process | |
| CN102912211A (en) | Smelting method for cylinder cover of marine diesel engine | |
| CN118996247A (en) | Nodular cast iron casting process | |
| CN115747629A (en) | Vermicular graphite cast iron base material and preparation method and application thereof | |
| CN103556034B (en) | The vermicularizing treating process of natural aerodynamic cylinder |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190222 |
|
| WD01 | Invention patent application deemed withdrawn after publication |