CN106906385B - A kind of piston combustion bowl second pouring reinforcing material and manufacturing method - Google Patents
A kind of piston combustion bowl second pouring reinforcing material and manufacturing method Download PDFInfo
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- CN106906385B CN106906385B CN201710150490.7A CN201710150490A CN106906385B CN 106906385 B CN106906385 B CN 106906385B CN 201710150490 A CN201710150490 A CN 201710150490A CN 106906385 B CN106906385 B CN 106906385B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 60
- 239000012779 reinforcing material Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 83
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 83
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000003466 welding Methods 0.000 claims abstract description 41
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 27
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 20
- 239000004411 aluminium Substances 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims abstract description 13
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 12
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052796 boron Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000010703 silicon Substances 0.000 claims abstract description 12
- 239000010936 titanium Substances 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 12
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 239000011777 magnesium Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 8
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 239000011572 manganese Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 18
- 230000006698 induction Effects 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 230000001052 transient effect Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 208000032366 Oversensing Diseases 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 13
- 238000001953 recrystallisation Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910001122 Mischmetal Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/002—Alloys based on nickel or cobalt with copper as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- 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
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of piston combustion bowl second pouring reinforcing material and manufacturing methods, it will solve the problems, such as poor for the thermal fatigue resistance at piston combustion bowl position in the prior art, its combustion chamber site component is changed using the method for second pouring in casting process, the alloys such as copper, nickel, the iron for making combustion chamber position coarse using 20 500KHz ratio-frequency weldings remeltings recrystallization mode in following process mutually fully refinement, to achieve the purpose that aditus laryngis enhances.Reinforcing material, it is composed of the following components：Nickel 3 40%, copper 4 25%, iron 0.4 20%, silicon 5 15%, magnesium 0 0.8%, titanium 0.05 5%, boron 0.0002 2.5%, manganese 0 0.5%, zirconium 0 0.2%, vanadium 0.1 0.2%, scandium 0 0.5%, surplus are aluminium and inevitable impurity, and % therein is mass percent.
Description
Technical field
The invention belongs to piston manufacturing fields, and in particular to a kind of piston combustion bowl second pouring reinforcing material and manufacturer
Method.
Technical background
More and more stringenter with emission request at present, commercial vehicle engine all develops to high-power, high load capacity direction, strengthens
Degree is continuously improved.To piston performance, the fatigue strength at especially piston combustion bowl position is put forward higher requirements.To cope with this
It is required that partial engine piston uses forged steel material, but the material proportion is difficult to process greatly, constrains its popularization and application.Some
The head of engine piston increases ceramic composite to improve the thermal fatigue property of piston aditus laryngis, but using ceramic composite
Cost is higher, and quality is difficult to control, and is not suitable for high-volume and promotes and applies.Therefore piston combustion chamber throat Technology For Remelting meet the tendency of and
Raw, the common Technology For Remelting of existing aditus laryngis has TIG, ATIG and a Laser Welding, such technology be on the basis of matrix alloy, it is right
Matrix alloy recrystallizes after being melted to be strengthened.But since matrix alloy is limited by casting and forming mode, cooling velocity is relatively low,
Cause alloy mutually larger, therefore limit the content of heat-resisting phase such as nickel, copper, iron, the temperature capacity of alloy is relatively low after remelting can not
Meets the needs of high strengthening engine.Developed a kind of Technology For Remelting in the recent period, it be using fill silk, dust alloying strengthening aditus laryngis
And the molten aluminum after remelting is fused into the technology of bottom, such technology piston aditus laryngis and bottom using molten metal powder or welding wire
In, but such mode complex process, it fills silk or dusts and upset protection gas, strengthening region is easy to generate stomata.And if using
The mode of dusting also brings along stomata problem, while coating process is excessively complicated, is unfavorable for producing in batches.
In conclusion in the prior art for the thermal fatigue resistance at piston combustion bowl position it is poor the problem of, still lack
Effective solution.
Invention content
Technical problem present in for the above-mentioned prior art, the present invention provide a kind of aluminum piston combustion chamber second pouring and increase
Strong material, it is composed of the following components：Nickel 3-40%, copper 4-25%, iron 0.4-20%, silicon 5-15%, magnesium 0-0.8%, titanium 0.05-
5%, boron 0.0002-2.5%, manganese 0-0.5%, zirconium 0-0.2%, vanadium 0.1-0.2%, scandium 0-0.5%, surplus is aluminium and can not keep away
The impurity exempted from, % therein are mass percent.
The reinforcing material is the combustion chamber second pouring material carried out on the basis of normal cast aluminum piston material, material
In containing the ingredients such as higher nickel, copper, iron, by second pouring, the heating resisting metal mischmetal of high-content is poured into piston
Combustion chamber regions are formed in the enrichment of combustion chamber regions heating resisting metal element, and form transition zone, transition to other positions of piston
The ingredient of layer is gradual change, therefore transition zone metallographic is comparatively fine, and intensity is not much different with matrix area, can meet piston to performance
Demand.The enrichment of combustion chamber regions heating resisting metal element makes combustion by using 20-500KHz ratio-frequency weldings remelting recrystallization mode
Burn the mutually fully refinement of the alloys such as coarse copper, nickel, the iron in room position, heat-resistant metal alloys are mutually tiny and abundant disperse, so as to make combustion
The heat resistance for burning chamber region aluminium alloy is promoted at double.
Further, the reinforcing material, it is composed of the following components：Nickel 3.5-35%, copper 4-25%, iron 0.4-20%,
Silicon 5-15%, titanium 0.05-5%, boron 0.0002-2.5%, manganese 0-0.5%, zirconium 0-0.2%, vanadium 0.1-0.2%, scandium 0-
0.5%, surplus is aluminium and inevitable impurity, and % therein is mass percent.
For the above-mentioned prior art the problem of, the present invention provides above-mentioned reinforcing material in second pouring aluminum piston
Application in combustion chamber.
When using the reinforcing material on the basis of normal aluminum piston material is poured into a mould, second pouring is carried out, can significantly be carried
The heat resistance of high alumina piston combustion bowl.And the region other than the position of combustion chamber, due to being the aluminium alloy of conventional constituents, so protecting
The casting character and cryogenic property of aluminum piston have been demonstrate,proved, can preferably meet the requirement of piston.
Technical problem present in for the above-mentioned prior art, the present invention also provides manufacture aluminium using above-mentioned reinforcing material
The method of piston, includes the following steps：
1) molten aluminum of setting quality normal components is poured into from the gate location of mold；
2) the above-mentioned reinforcing material of setting quality is poured into from the riser of mold, the temperature of reinforcing material is 790-1050
DEG C, aluminum piston blank is made；
3) piston blank is thermally treated, machines, after cleaning preheating, goes to ratio-frequency welding remelting process；
4) piston blank is placed in ratio-frequency welding remelting tooling, ratio-frequency welding induction coil is positioned over to the combustion of piston blank
Room position is burnt, the frequency of ratio-frequency welding is set as 20-500KHz, power control completes piston in 20-200KW within 2min
The remelting of throat site.
For the first time pour into a mould when using normal components molten aluminum cast aluminum piston ontology, ensure that aluminum piston casting character and
The molding of aluminum piston.Second pouring uses above-mentioned reinforcing material, and the temperature of reinforcing material is higher, so can live after cast in aluminium
The ingredient of the combustion chamber of plug obtains heating resisting metal enrichment of element area, Composition Transient and orthodox material Composition Region from the outside to the core.
Piston combustion chamber throat region makes the coarse copper in combustion chamber position through ratio-frequency welding remelting recrystallization mode.The alloys such as nickel, iron mutually fill
Divide refinement.Using ratio-frequency welding remelting recrystallize it is simple for process, overcome landfilling area, MIG be easy to generate stomata the shortcomings that.
Second pouring temperature of aluminum liquid control range is at 790-1050 DEG C, and temperature control is adjusted by heterogeneity, ambrose alloy
Iron is removed the limit when constituent contents are low, is controlled at 800 DEG C or so.Ambrose alloy iron capping when constituent contents are high, controls 1000
DEG C or so.
Further, the reinforcing material is positioned in sensing stirring holding furnace.
Sensing stirring holding furnace can play molten aluminum preferable stirring action, and with good heat insulation effect.
Further, the mass ratio of the quality of reinforcing material and normal components molten aluminum is 1:8-1:20.
When reinforcing material and normal components molten aluminum mass ratio in the range when, the aluminum piston poured into a mould has more preferably
Heat resistance.
Further, in step 2), funnel is placed in riser, reinforcing material is drained to the combustion chamber of aluminum piston.
For the above-mentioned prior art the problem of, the present invention also provides using the above method manufacture aluminum piston,
The combustion chamber of the aluminum piston is followed successively by heating resisting metal enrichment of element area, Composition Transient and orthodox material ingredient from outside to inside
Area.
Further, in step 4), the distance between the ratio-frequency welding induction coil and combustion chamber are less than or equal to 5mm,
The melting of piston throat site is made to refine layer depth as 2-5mm.
The present invention also provides above-mentioned aluminum piston in application high-power, in high load engine.
Due to the aluminum piston combustion chamber have good thermal fatigue resistance, so using within the engine when, make hair
Motivation can have high-power and high load capacity, improve the performance of engine.
Beneficial effects of the present invention are：
High-content heating resisting metal mischmetal is poured by piston combustion chamber region by second pouring, is formed in combustion chamber
The enrichment of region heating resisting metal element, and form transition zone to other positions of piston, the ingredient of transition zone are gradual changes, therefore mistake
It crosses that layer metallographic is comparatively fine, and intensity is not much different with matrix area, can meet the needs of piston is to performance.And combustion chamber regions due to
The enrichment of heating resisting metal element, metallographic is coarse, therefore we carry out it using ratio-frequency welding remelting mode in following process
Adequately refinement, heating resisting metal element is in the abundant disperse of combustion chamber regions, so as to make the heat resistance of combustion chamber regions aluminium alloy
Promotion at double, test data can be seen that under the conditions of detonation pressure 21-24MPa is corresponding, and the combustion chamber throat service life can improve 4-
7 times, piston life is correspondingly improved, so as to solve current engine state five, more severe to piston performance after state six
The requirement at quarter is that good basis is created in the improvement of environment.Meanwhile the reduction of engine fuel consumption, engine oil consumption, will be entire society
Mass energy can be saved.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is structure diagram when pouring into a mould normal components molten aluminum；
Fig. 2 is structure diagram when pouring into a mould second pouring material；
Fig. 3 is the structure diagram of aluminum piston blank that cast obtains；
Fig. 4 is the schematic view of the mounting position of ratio-frequency welding induction coil and piston combustion bowl；
Fig. 5 is aluminum piston combustion chamber component distributing schematic diagram.
Wherein, 1, pony ladle, 2, backform, 3, external mold, 4, small pony ladle, 5, funnel, 6, aluminum piston blank, 7, the ratio-frequency welding line of induction
Circle, 8, rough turn piston, 9, reflow zone, 10, heating resisting metal enrichment of element area, 11, Composition Transient, 12, orthodox material Composition Region,
13rd, piston finished product.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Term explains part：
Reinforcing material, material herein are applied during the second pouring after carrying out aluminum piston cast for the first time, are needed
Coordinate with the molten aluminum poured into a mould for the first time and pour into a mould, the heat resistance of aluminum piston combustion chamber can be enhanced, so being named as increasing herein
Strong material.
The normal components molten aluminum used in casting process for the first time can arbitrarily can be used for pouring into a mould aluminum piston to be existing
Molten aluminum, however, to ensure that the casting character of aluminum piston of cast and room temperature performance, nickel, copper, iron in the molten aluminum of the normal components
Wait the content of heating resisting metals element should be small.
Heating resisting metal enrichment of element area, since the region is poured into a mould by second pouring material herein, so should
The content of the heating resisting metals element such as nickel, iron, the copper in region is relatively high, so that the region has preferable heat resistance,
It is named as heating resisting metal enrichment of element area.
Composition Transient, the region are during second pouring, and the second pouring material of high temperature is obtained with cast for the first time
Material between the contents of the elements such as the obtained region of diffusion, nickel, iron, the copper in the region occur be less than heating resisting metal enrichment of element
Area, more than normal components area, so being named as Composition Transient.
Normal components area is the position poured into a mould by normal components molten aluminum as its name suggests.
As shown in Figure 1, aluminum piston mold includes backform 2 and external mold 3.
Embodiment 1
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, the ingredient of reinforcing material be containing 3% nickel, 4% copper, 0.6% iron, 7% silicon, 0.05% titanium,
0.0002% boron, 0.05% manganese, 0.04% zirconium, 0.1% vanadium, in addition to impurity element, surplus is aluminium.Temperature of aluminum liquid control
Range processed is at 790-810 DEG C.
Step 2：It is dipped with pony ladle 1 and with the molten aluminum of electronic balance weighing normal components, then in the usual way from cast gate
Molten aluminum is poured into, as shown in Figure 1.
Step 3：The molten aluminum of high alloy content is dipped in self-induction stirring holding furnace with small pony ladle 4, is emitted certainly with metal funnel 5
It is poured into mouthful, the combustion chamber which is guided to aluminum piston by funnel 5 carries out second pouring, as shown in Figure 2.Cast
The obtained structure diagram of aluminum piston blank 6 is as shown in Figure 3.
Step 4：Aluminum piston blank 6 is thermally treated, machining, cleans preheating, goes to ratio-frequency welding remelting process.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 5mm, connect high-frequency welding power supply, and frequency sets 20KHz,
Power control completes remelting in 0.8 minute, as shown in Figure 4 in 200KW.
Step 6：Heating resisting metal element is presented into piston finished product 13, piston combustion bowl regional part in Piston Machining from the outside to the core
Enrichment region 10, Composition Transient 11 and orthodox material Composition Region 12, piston combustion chamber throat reflow zone 9 obtain fully thin through remelting
Change enhancing, as shown in Figure 5.
Embodiment 2
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, and reinforcing material contains 7% nickel, 5% copper, 0.8% iron, 5% silicon, 0.1% magnesium, 0.06% titanium,
0.0003% boron, 0.1% manganese, 0.06% zirconium, 0.11% vanadium, 0.01% scandium, surplus is aluminium in addition to impurity element.
Temperature of aluminum liquid control range is at 810-830 DEG C.
Step 2：It is dipped with pony ladle 1 and with the molten aluminum of electronic balance weighing normal components, then in the usual way from cast gate
Molten aluminum is poured into, as shown in Figure 1.
Step 3：The molten aluminum of high alloy content is dipped in self-induction stirring holding furnace with small pony ladle 4, is emitted certainly with metal funnel 5
It is poured into mouthful, the combustion chamber which is guided to aluminum piston by funnel 5 carries out second pouring, as shown in Figure 2.Cast
The obtained structure diagram of aluminum piston blank 6 is as shown in Figure 3.
Step 4：Aluminum piston blank 6 is thermally treated, machining, cleans preheating, goes to ratio-frequency welding remelting process.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 4.5mm, connect high-frequency welding power supply, frequency setting
60KHz, power control completed remelting in 150KW, 1.2 minutes, as shown in Figure 4.
Step 6：Heating resisting metal element is presented into piston finished product 13, piston combustion bowl regional part in Piston Machining from the outside to the core
Enrichment region 10, Composition Transient 11 and orthodox material Composition Region 12, piston combustion chamber throat reflow zone 9 obtain fully thin through remelting
Change enhancing, as shown in Figure 5.
Embodiment 3
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, and reinforcing material contains 20% nickel, 6% copper, 4.2 iron, 10% silicon, 0.3% magnesium, 0.2% titanium,
0.05% boron, 0.2% manganese, 0.1% zirconium, 0.12% vanadium, surplus is aluminium in addition to impurity element.Temperature of aluminum liquid controls model
It is trapped among 850-880 DEG C.
From Step 2 to Step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 4.0mm, connect high-frequency welding power supply, frequency setting
120KHz, power control completed remelting in 120KW, 1.4 minutes, as shown in Figure 4.
Step 6 such as embodiment 1.
Embodiment 4
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, and reinforcing material contains 30% nickel, 6% copper, 5.4% iron, 5.2% silicon, 0.7% magnesium, 1% titanium,
0.4% boron, 0.4% manganese, 0.15% zirconium, 0.15% vanadium, 0.3% scandium, surplus is aluminium in addition to impurity element.Molten aluminum
Temperature controlling range is at 880-910 DEG C.
From Step 2 to Step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 3.2mm, connect high-frequency welding power supply, frequency setting
340KHz, power control completed remelting in 100KW, 1.5 minutes, as shown in Figure 4.
Step 6 such as embodiment 1.
Embodiment 5
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, and reinforcing material contains 5% nickel, 10% copper, 10% iron, 12% silicon, 0.4% magnesium, 3% titanium, and 1%
Boron, 0.5% manganese, 0.18% zirconium, 0.18% vanadium, 0.5% scandium, in addition to impurity element surplus be aluminium.Temperature of aluminum liquid
Control range is at 850-880 DEG C.
From Step 2 to Step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 2.7mm, connect high-frequency welding power supply, frequency setting
390KHz, power control completed remelting in 80KW, 1.7 minutes, as shown in Figure 4.
Step 6 such as embodiment 1.
Embodiment 6
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, and second pouring material contains 35% nickel, 5% copper, 1.2 iron, 5% silicon, 0.2% magnesium, 0.1%
Titanium, 0.02% boron, 0.1% manganese, 0.01% zirconium, 0.2% vanadium, surplus is aluminium in addition to impurity element.Temperature of aluminum liquid control
Range processed is at 980-1010 DEG C.
From Step 2 to Step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 2.4mm, connect high-frequency welding power supply, frequency setting
430KHz, power control completed remelting in 60KW, 1.8 minutes, as shown in Figure 4.
Step 6 such as embodiment 1.
Embodiment 7
Using the method for reinforcing material manufacture aluminum piston, include the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast uses, and second pouring material contains 7% nickel, 8% copper, 20% iron, 15% silicon, 0.6% magnesium, 1% titanium,
0.02% boron, 0.2% manganese, 0.11% zirconium, 0.11% vanadium, surplus is aluminium in addition to impurity element.Temperature of aluminum liquid controls
Range is at 930-960 DEG C.
From Step 2 to Step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting tooling, piston is moved with tooling, ratio-frequency welding induction coil
7 enter piston combustion bowl position, coil and piston combustion bowl distance 2.0mm, connect high-frequency welding power supply, frequency setting
500KHz, power control completed remelting in 30KW, 1.9 minutes, as shown in Figure 4.
Step 6 such as embodiment 1.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (8)
- A kind of 1. method using second pouring reinforcing material manufacture aluminum piston, it is characterised in that：Include the following steps：1) molten aluminum of setting quality normal components is poured into from the gate location of mold；2) the second pouring reinforcing material of setting quality is poured into from the riser of mold, the temperature of second pouring reinforcing material is 790-1050 DEG C, aluminum piston blank is made；3) piston blank is thermally treated, machines, after cleaning preheating, goes to ratio-frequency welding remelting process；4) piston blank is placed in ratio-frequency welding remelting tooling, ratio-frequency welding induction coil is positioned over to the combustion chamber of piston blank The frequency of ratio-frequency welding is set as 20-500KHz by position, and power control is in 20-200KW, the completion piston aditus laryngis within 2min The remelting at position；The second pouring reinforcing material, it is composed of the following components：Nickel 3-40%, copper 4-25%, iron 0.4-20%, silicon 5- 15%, magnesium 0-0.8%, titanium 0.05-5%, boron 0.0002-2.5%, manganese 0-0.5%, zirconium 0-0.2%, vanadium 0.1-0.2%, scandium 0- 0.5%, surplus is aluminium and inevitable impurity, and % therein is mass percent.
- 2. according to the method described in claim 1, it is characterized in that：The content of ambrose alloy iron in second pouring reinforcing material is got over Height, the temperature of cast are higher.
- 3. according to the method described in claim 1, it is characterized in that：The second pouring reinforcing material is positioned over sensing stirring In holding furnace.
- 4. according to the method described in claim 1, it is characterized in that：The quality of second pouring reinforcing material and normal components molten aluminum Mass ratio be 1:8-1:20.
- 5. according to the method described in claim 1, it is characterized in that：In step 4), the ratio-frequency welding induction coil and combustion chamber The distance between be less than or equal to 5mm, make piston throat site melting refine layer depth be 2-5mm.
- 6. according to the method described in claim 1, it is characterized in that：Second pouring reinforcing material, it is composed of the following components：Nickel 3.5-35%, copper 4-25%, iron 0.4-20%, silicon 5-15%, magnesium 0-0.8%, titanium 0.05-5%, boron 0.0002-2.5%, manganese 0-0.5%, zirconium 0-0.2%, vanadium 0.1-0.2%, scandium 0-0.5%, surplus are aluminium and inevitable impurity, and % therein is matter Measure percentage.
- 7. utilize the aluminum piston of any the method manufactures of claim 1-6, it is characterised in that：The combustion chamber of the aluminum piston by Heating resisting metal enrichment of element area, Composition Transient and orthodox material Composition Region are followed successively by outside.
- 8. aluminum piston described in claim 7 is in application high-power, in high load engine.
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| CN106460104A (en) * | 2014-03-06 | 2017-02-22 | 古河电气工业株式会社 | Aluminum alloy wire, aluminum alloy strand wire, coated electric wire, wire harness, process for producing aluminum alloy wire, and method for examining aluminum alloy wire |
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| CN101709414A (en) * | 2009-11-10 | 2010-05-19 | 中国兵器工业第五二研究所 | High silicon gradient composite aluminum alloy cylinder sleeve material and preparation method thereof |
| CN103160715A (en) * | 2011-12-19 | 2013-06-19 | 中国兵器工业第五二研究所 | Graded aluminium alloy cylinder liner material and preparing method thereof |
| CN102943192A (en) * | 2012-10-29 | 2013-02-27 | 中国兵器工业第五二研究所 | Aluminum piston manufacturing method |
| CN106460104A (en) * | 2014-03-06 | 2017-02-22 | 古河电气工业株式会社 | Aluminum alloy wire, aluminum alloy strand wire, coated electric wire, wire harness, process for producing aluminum alloy wire, and method for examining aluminum alloy wire |
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Effective date of registration: 20170713 Address after: 256602 Bohai Road, Shandong, No. twenty-one, No. 569, Binzhou Applicant after: BINZHOU BOHAI PISTON Co.,Ltd. Address before: 256602 Bohai Road, Shandong, No. 21, No. 569, Binzhou Applicant before: SHANDONG BINZHOU BOHAI PISTON Co.,Ltd. |
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Denomination of invention: A reinforced material and manufacturing method for secondary pouring of piston combustion chamber Granted publication date: 20180615 Pledgee: Binzhou branch of China CITIC Bank Co.,Ltd. Pledgor: BINZHOU BOHAI PISTON Co.,Ltd. Registration number: Y2024980014544 |
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