CN107723650A - A kind of bimetallic casting method of engine cylinder-body ferro-aluminum - Google Patents
A kind of bimetallic casting method of engine cylinder-body ferro-aluminum Download PDFInfo
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- CN107723650A CN107723650A CN201711008972.5A CN201711008972A CN107723650A CN 107723650 A CN107723650 A CN 107723650A CN 201711008972 A CN201711008972 A CN 201711008972A CN 107723650 A CN107723650 A CN 107723650A
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- cast iron
- engine cylinder
- casting
- casting method
- temperature
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C6/00—Coating by casting molten material on the substrate
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
Abstract
A kind of bimetallic casting method of engine cylinder-body ferro-aluminum, belongs to field of alloy preparation technology, including：Prepare vermicular cast iron, cast iron decontamination processing of rust removing, surface modification treatment, alloy refining and add chromium, mould brush thermal insulation coatings, hot dipping plating, casting.Hot-dip aluminizing not only makes Cast Iron Surface form one layer of interphase layer, and one layer of aluminium alloy layer not solidified completely is also stained with its surface, it is easily merged during great waves casting with the aluminium alloy of casting, is formd complete metallurgical binding, is improved the Interface adhesive strength and performance of alloy.
Description
Technical field
The invention belongs to field of alloy preparation technology, and in particular to a kind of bimetallic casting side of engine cylinder-body ferro-aluminum
Method.
Background technology
Due to can combine the advantage of different materials, the every field in the whole world all plays more composite
Carry out more important effect；On the research of composite, the sight of more and more experts and scholar also attract.And bimetallic is answered
Founding materials is closed, due to being synthesized using casting method, technique is simple, and cost is cheap, has great application prospect, but pours into a mould
During two kinds of metal times of contact it is short, cooling rate is fast, drastically influence the combination of the two, this also turn into restrict bimetallic answer
Close the bottleneck of founding materials production and application.Therefore, how to make composite casting that there is good combination and performance, need into one
The research of step.
The content of the invention
According to problems of the prior art, the invention provides a kind of bimetallic casting of engine cylinder-body ferro-aluminum
Method, it is intended that improve the Interface adhesive strength and performance of alloy.
The present invention uses following technical scheme：
A kind of bimetallic casting method of engine cylinder-body ferro-aluminum, comprises the following steps：
Step 1：Cast iron is used into GGW-0.012 intermediate frequency iron-free core type induction furnace meltings, creepage rate uses and pours method,
The vermiculizer of percentage by weight 0.6% and the inovulant of percentage by weight 0.33% are added, using plug-in type temperature-measuring gun thermometric, is gone out
1560 DEG C of iron temperature, 1400 DEG C of pouring temperature, obtains vermicular cast iron；
Step 2：Vermicular cast iron is polished with sand paper, to remove surface oxide layer, cast iron is placed in mass concentration 15%
In oxygen aqueous solution of sodium oxide, 20min is soaked in 50 DEG C, oil removal treatment is carried out, then with the hydrochloric acid of mass fraction 5% to cast iron table
Face carries out acid pickling and rust removing, and then drying is put stand-by in a dry environment；
Step 3：From the K of mass concentration 4%2ZrF6The aqueous solution is surface modifier, and cast iron is immersed in the modification of surface,
Dipping temperature is controlled at 80-90 DEG C, and then time control was at the uniform velocity taken out more than 10 minutes, and dried at a temperature of 150 ± 5 DEG C
It is dry, and the pre-heat treatment is carried out to cast iron in 200 DEG C -300 DEG C and is incubated, preheating temperature is 200 DEG C -300 DEG C；
Step 4：With 12KW crucible electrical resistance furnace smelting aluminium alloy, smelting temperature uses weight percent at 700 DEG C ± 20 DEG C
C than 0.6%2Cl6Refining, after standing 20min, the chromium of mass percent 2% is added into aluminium alloy melt, is stirred with graphite
Rod stirs, and in 700 DEG C of insulations；
Step 5：Thermal insulation coatings brush will be cast before casting on mould, 500 are preheated in advance using the mould after coating
℃；
Step 6：Cast iron is immersed in aluminium alloy melt and starts or immersion, the hot-dip time is 15min, by heat
Cast iron after immersion plating processing is taken out rapidly and fixed in a mold, and casting was completed in 20 seconds；
Step 7：By the sample after the completion of casting in 500 DEG C of solution treatment 4h, then at 200 DEG C of Ageing Treatment 6h.
Preferably, the sand paper described in step 2 is the SiC sand paper of 400 mesh.
Preferably, the casting rate described in step 6 is 1.5kg/s.
Preferably, described aluminium alloy contains the composition of following percentage by weight：Si6.5%-7.5%, Mg0.25%-
0.45%th, Ti0.08%-0.2%, Mn0%-0.1%, surplus Al.
Preferably, described cast iron includes the chemical composition of following percentage by weight：C3.4%-3.6%, Si2.4%-
2.6%th, Mn0.3%-0.6%, S0%-0.02%, P0%-0.07%, surplus Fe.
Preferably, described vermiculizer is FeSiMg5RE5 vermiculizers.
Preferably, described inovulant is Si-Ba inovulants.
The beneficial effects of the present invention are：
1) processing intent of Cast Iron Surface hot-dip aluminizing has two, and first is the pre-heat treatment as parent metal, and second
Individual is cast iron its wetability raising by pretreatment.Such operation be because when typically being dissolved on the surface of core,
Core is easier to realize metallurgical binding with molten metal.Can be the metallurgy at interface because being preheated to core and temperature being higher
With reference to the more energy of offer：First, preheating reduces its chilling action to molten metal, maintains the temperature of integral material；
Second, core temperature is higher, and the energy that atom has is higher, so as to break away from the enhancing of the ability of metal key constraint, atoms permeating
Ability greatly reinforces, the increase of diffusion layer width, and interface bond strength is also higher.Secondly the hot environment that hot-dip aluminizing provides can promote
Enter the diffusion of atom, this is more easy to the metallurgical reaction triggered between aluminium/iron and it is just formed an interphase layer (i.e. smelting before casting
Golden binder course)；Hot-dip aluminizing not only makes Cast Iron Surface form one layer of interphase layer, and has also been stained with one layer not on its surface
The aluminium alloy layer solidified completely, its aluminium alloy easily with casting in casting cycle merge, and form complete metallurgical binding.When
Hot-dip 15min, diffusion is the most abundant, and the transition region of formation is most wide, in 50um or so, effectively increases the interface cohesion of alloy
Ability and performance.
2) mould thermal conductivity is good, and temperature is reduced than very fast, therefore by the preferable paint brush of insulation effect before casting after casting
On mould.
3) after adding chromium, it will be apparent that promote the diffusion levels of atom, transition region is obvious compared with the sample of non-additional element
Broaden, and in the region that is diffused in there occurs long-range of atom and other elements are together with the shape of intermetallic compound or solid solution
Formula separates out.
4) solution treatment and Ageing Treatment can significantly facilitate the diffusion of atom, and transition region substantially broadens.
5) 4% K2ZrF6The aqueous solution inhibits Cast Iron Surface to aoxidize, and has purified the oxide for being attached to surface.After drying,
Surface forms one layer of fine and close film, is effectively protected matrix surface.During cast, as aluminium liquid enters mould, cast iron table
The diaphragm in face gradually decomposes and exposes the larger matrix surface of activity, greatly improves the wetability of aluminium liquid, improves casting
The interface performance of part.
6) because vermicular cast iron has the performance of spheroidal graphite cast-iron and gray cast iron concurrently, therefore, it has unique purposes, in steel ingot
The application of mould, automobile engine, blast pipe, glass mold, diesel engine cylinder cover, braking component etc. has good effect.
The sensitivity profile of vermicular cast iron is much smaller compared with common grey iron, therefore the mechanical property on its thick heavy in section is still than more uniform.This
Its outer wearability is better than inoculation cast iron and high phosphorus wear resistant cast iron.Thermal conductivity and thermal fatigue resistance ratio spheroidal graphite cast-iron are much higher, this
It is the outstanding advantages of vermicular cast iron.The anti-more other cast irons of growth and inoxidizability are all high.Using compacted ink produced by the present invention
Cast iron nodulizing rate is higher than 85%.
Embodiment
With reference to embodiments, the technical scheme in the present invention is clearly and completely described.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
A kind of bimetallic casting method of engine cylinder-body ferro-aluminum, comprises the following steps：
Step 1：Cast iron is used into GGW-0.012 intermediate frequency iron-free core type induction furnace meltings, creepage rate uses and pours method,
The vermiculizer of percentage by weight 0.6% and the inovulant of percentage by weight 0.33% are added, using plug-in type temperature-measuring gun thermometric, is gone out
1560 DEG C of iron temperature, 1400 DEG C of pouring temperature, obtains vermicular cast iron；
Step 2：Vermicular cast iron is polished with sand paper, to remove surface oxide layer, cast iron is placed in mass concentration 15%
In oxygen aqueous solution of sodium oxide, 20min is soaked in 50 DEG C, oil removal treatment is carried out, then with the hydrochloric acid of mass fraction 5% to cast iron table
Face carries out acid pickling and rust removing, and then drying is put stand-by in a dry environment；
Step 3：From the K of mass concentration 4%2ZrF6The aqueous solution is surface modifier, and cast iron is immersed in the modification of surface,
Dipping temperature is controlled at 80-90 DEG C, and then time control was at the uniform velocity taken out more than 10 minutes, and dried at a temperature of 150 ± 5 DEG C
It is dry, and the pre-heat treatment is carried out to cast iron in 200 DEG C -300 DEG C and is incubated, preheating temperature is 200 DEG C -300 DEG C；
Step 4：With 12KW crucible electrical resistance furnace smelting aluminium alloy, smelting temperature uses weight percent at 700 DEG C ± 20 DEG C
C than 0.6%2Cl6Refining, after standing 20min, the chromium of mass percent 2% is added into aluminium alloy melt, is stirred with graphite
Rod stirs, and in 700 DEG C of insulations；
Step 5：Thermal insulation coatings brush will be cast before casting on mould, 500 are preheated in advance using the mould after coating
℃；
Step 6：Cast iron is immersed in aluminium alloy melt and starts or immersion, the hot-dip time is 15min, by heat
Cast iron after immersion plating processing is taken out rapidly and fixed in a mold, and casting was completed in 20 seconds；
Step 7：By the sample after the completion of casting in 500 DEG C of solution treatment 4h, then at 200 DEG C of Ageing Treatment 6h.
Sand paper described in step 2 is the SiC sand paper of 400 mesh.
Casting rate described in step 6 is 1.5kg/s.
Described aluminium alloy contains the composition of following percentage by weight：Si6.5%-7.5%, Mg0.25%-0.45%,
Ti0.08%-0.2%, Mn0%-0.1%, surplus Al.
Described cast iron includes the chemical composition of following percentage by weight：C3.4%-3.6%, Si2.4%-2.6%,
Mn0.3%-0.6%, S0%-0.02%, P0%-0.07%, surplus Fe.
Described vermiculizer is FeSiMg5RE5 vermiculizers.
Described inovulant is Si-Ba inovulants.
Claims (7)
1. a kind of bimetallic casting method of engine cylinder-body ferro-aluminum, it is characterised in that comprise the following steps：
Step 1：Cast iron is used into GGW-0.012 intermediate frequency iron-free core type induction furnace meltings, creepage rate adds using method is poured
The vermiculizer of percentage by weight 0.6% and the inovulant of percentage by weight 0.33%, using plug-in type temperature-measuring gun thermometric, temperature of tapping a blast furnace
1560 DEG C of degree, 1400 DEG C of pouring temperature, obtains vermicular cast iron；
Step 2：Vermicular cast iron is polished with sand paper, to remove surface oxide layer, cast iron is placed in the oxygen oxygen of mass concentration 15%
Change in sodium water solution, soak 20min in 50 DEG C, carry out oil removal treatment, then Cast Iron Surface is entered with the hydrochloric acid of mass fraction 5%
Row acid pickling and rust removing, then drying are put stand-by in a dry environment；
Step 3：From the K of mass concentration 4%2ZrF6The aqueous solution is surface modifier, cast iron is immersed in the modification of surface, dipping
Temperature control at 80-90 DEG C, then more than 10 minutes at the uniform velocity took out by time control, and is dried at a temperature of 150 ± 5 DEG C, and
The pre-heat treatment is carried out to cast iron in 200 DEG C -300 DEG C and is incubated, preheating temperature is 200 DEG C -300 DEG C；
Step 4：With 12KW crucible electrical resistance furnace smelting aluminium alloy, smelting temperature uses percentage by weight at 700 DEG C ± 20 DEG C
0.6% C2Cl6Refining, after standing 20min, the chromium of mass percent 2% is added into aluminium alloy melt, uses graphite stirring rod
Stir, and in 700 DEG C of insulations；
Step 5：Thermal insulation coatings brush will be cast before casting on mould, 500 DEG C are preheated in advance using the mould after coating；
Step 6：Cast iron is immersed in aluminium alloy melt and starts or immersion, the hot-dip time is 15min, by hot-dip
Cast iron after processing is taken out rapidly and fixed in a mold, and casting was completed in 20 seconds；
Step 7：By the sample after the completion of casting in 500 DEG C of solution treatment 4h, then at 200 DEG C of Ageing Treatment 6h.
A kind of 2. bimetallic casting method of engine cylinder-body ferro-aluminum according to claim 1, it is characterised in that：Step
Sand paper described in two is the SiC sand paper of 400 mesh.
A kind of 3. bimetallic casting method of engine cylinder-body ferro-aluminum according to claim 1, it is characterised in that：Step
Casting rate described in six is 1.5kg/s.
4. a kind of bimetallic casting method of engine cylinder-body ferro-aluminum according to claim 1, it is characterised in that described
Aluminium alloy contain the composition of following percentage by weight：Si6.5%-7.5%, Mg0.25%-0.45%, Ti0.08%-
0.2%th, Mn0%-0.1%, surplus Al.
5. a kind of bimetallic casting method of engine cylinder-body ferro-aluminum according to claim 1, it is characterised in that described
Cast iron include the chemical composition of following percentage by weight：C3.4%-3.6%, Si2.4%-2.6%, Mn0.3%-0.6%,
S0%-0.02%, P0%-0.07%, surplus Fe.
A kind of 6. bimetallic casting method of engine cylinder-body ferro-aluminum according to claim 1, it is characterised in that：It is described
Vermiculizer be FeSiMg5RE5 vermiculizers.
A kind of 7. bimetallic casting method of engine cylinder-body ferro-aluminum according to claim 1, it is characterised in that：It is described
Inovulant be Si-Ba inovulants.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637910A (en) * | 2018-05-08 | 2018-10-12 | 周焱春 | A method of improving metal surface quality |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065101A (en) * | 1992-04-29 | 1992-10-07 | 东南大学 | The new hot-dip aluminium plating technology of steel and ironcasting |
| CN101418425A (en) * | 2007-10-24 | 2009-04-29 | 北京有色金属研究总院 | Process for preparing tritium permeation coating by hot dipping |
| US20110146845A1 (en) * | 2006-07-28 | 2011-06-23 | Ks Aluminium-Technologie Gmbh | Flux and method for the reduction of oxide layers on metallic surfaces |
| CN102773463A (en) * | 2012-08-01 | 2012-11-14 | 烟台路通精密铝业有限公司 | Preparation process of dual-metal engine cylinder composite material |
| KR20130011739A (en) * | 2011-07-22 | 2013-01-30 | 동아대학교 산학협력단 | The interlayer inserting mothod for enhancing the bonding power at that time of combining al alloy with fe |
| CN102925945A (en) * | 2012-11-07 | 2013-02-13 | 西安西工大超晶科技发展有限责任公司 | Mother for preparing a lifting tube through counter-gravity casting |
| CN103131996A (en) * | 2011-12-05 | 2013-06-05 | 贵州铝厂 | Low-zinc hot-dip-coating aluminum alloy coating material achieving alteration by chrome coordination compound |
| CN103894586A (en) * | 2014-04-25 | 2014-07-02 | 烟台路通精密铝业有限公司 | Aluminium alloy engine cast iron cylinder sleeve processing technology |
| CN105478725A (en) * | 2015-12-23 | 2016-04-13 | 上海交通大学 | Method for preparing bi-metal composite through solid copper solid-liquid composite and extrusion combination |
| CN105583628A (en) * | 2015-12-23 | 2016-05-18 | 上海交通大学 | Method for manufacturing bi-metal composite material through combination of solid aluminum solid and liquid compounding and extruding |
| CN106238710A (en) * | 2016-08-25 | 2016-12-21 | 上海交通大学 | The solid-liquid method of attachment of aluminum aluminum metal |
-
2017
- 2017-10-25 CN CN201711008972.5A patent/CN107723650B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065101A (en) * | 1992-04-29 | 1992-10-07 | 东南大学 | The new hot-dip aluminium plating technology of steel and ironcasting |
| US20110146845A1 (en) * | 2006-07-28 | 2011-06-23 | Ks Aluminium-Technologie Gmbh | Flux and method for the reduction of oxide layers on metallic surfaces |
| CN101418425A (en) * | 2007-10-24 | 2009-04-29 | 北京有色金属研究总院 | Process for preparing tritium permeation coating by hot dipping |
| KR20130011739A (en) * | 2011-07-22 | 2013-01-30 | 동아대학교 산학협력단 | The interlayer inserting mothod for enhancing the bonding power at that time of combining al alloy with fe |
| CN103131996A (en) * | 2011-12-05 | 2013-06-05 | 贵州铝厂 | Low-zinc hot-dip-coating aluminum alloy coating material achieving alteration by chrome coordination compound |
| CN102773463A (en) * | 2012-08-01 | 2012-11-14 | 烟台路通精密铝业有限公司 | Preparation process of dual-metal engine cylinder composite material |
| CN102925945A (en) * | 2012-11-07 | 2013-02-13 | 西安西工大超晶科技发展有限责任公司 | Mother for preparing a lifting tube through counter-gravity casting |
| CN103894586A (en) * | 2014-04-25 | 2014-07-02 | 烟台路通精密铝业有限公司 | Aluminium alloy engine cast iron cylinder sleeve processing technology |
| CN105478725A (en) * | 2015-12-23 | 2016-04-13 | 上海交通大学 | Method for preparing bi-metal composite through solid copper solid-liquid composite and extrusion combination |
| CN105583628A (en) * | 2015-12-23 | 2016-05-18 | 上海交通大学 | Method for manufacturing bi-metal composite material through combination of solid aluminum solid and liquid compounding and extruding |
| CN106238710A (en) * | 2016-08-25 | 2016-12-21 | 上海交通大学 | The solid-liquid method of attachment of aluminum aluminum metal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637910A (en) * | 2018-05-08 | 2018-10-12 | 周焱春 | A method of improving metal surface quality |
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