CN106906385A - A kind of piston combustion bowl second pouring reinforcing material and manufacture method - Google Patents
A kind of piston combustion bowl second pouring reinforcing material and manufacture method Download PDFInfo
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- CN106906385A CN106906385A CN201710150490.7A CN201710150490A CN106906385A CN 106906385 A CN106906385 A CN 106906385A CN 201710150490 A CN201710150490 A CN 201710150490A CN 106906385 A CN106906385 A CN 106906385A
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- piston
- reinforcing material
- combustion chamber
- ratio
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 61
- 239000012779 reinforcing material Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 85
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 85
- 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
- 239000004411 aluminium Substances 0.000 claims abstract description 35
- 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
- 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
- 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
- 239000007788 liquid Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 230000006698 induction Effects 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 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 208000032366 Oversensing Diseases 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 5
- 238000001953 recrystallisation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 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
- 230000008859 change Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 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
- 239000000428 dust Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 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
- 238000010923 batch production Methods 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
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 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
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007493 shaping process Methods 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 manufacture method, it will solve the problems, such as that the thermal fatigue resistance in the prior art for piston combustion bowl position is poor, method using second pouring in casting process changes its combustion chamber site component, the mutually fully refinement of the alloys such as the thick copper in combustion chamber position, nickel, iron is made using 20 500KHz ratio-frequency weldings remeltings recrystallization mode in following process, to reach the enhanced purpose of aditus laryngis.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%, balance of aluminium and inevitable impurity, % therein are mass percent.
Description
Technical field
The invention belongs to piston manufacture field, and in particular to a kind of piston combustion bowl second pouring reinforcing material and manufacturer
Method.
Technical background
More and more stricter with emission request at present, commercial vehicle engine all develops to high-power, high load capacity direction, reinforcing
Degree is improved constantly.Fatigue strength to piston performance, especially piston combustion bowl position proposes requirement higher.To tackle 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 uses ceramic composite
Relatively costly, quality is difficult to control, and is not suitable for high-volume popularization and application.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, this kind of technology be on the basis of matrix alloy, it is right
Matrix alloy recrystallizes reinforcing after being melted.But because matrix alloy is limited by casting mode, its 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 cannot
Meet the demand 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 technology of bottom, the aluminium liquid after remelting is fused into this kind of technology piston aditus laryngis and bottom using the metal powder or welding wire of melting
In, but this kind of mode complex process, filling silk or dust and upset protection gas, strengthening region is easy to produce stomata.And if using
The mode of dusting, also brings along stomata problem, while coating process is excessively complicated, is unfavorable for batch production.
In sum, problem poor for the thermal fatigue resistance at piston combustion bowl position in the prior art, still lacks
Effective solution.
The content of the invention
For technical problem present in above-mentioned prior art, the present invention provides a kind of aluminum piston combustion chamber second pouring and increases
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% and can not keep away balance of aluminium
The impurity exempted from, % therein is 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 composition such as nickel higher, 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 composition of layer is gradual change, therefore transition zone metallographic is comparatively fine, and intensity is more or less the same with matrix area, can meet piston to performance
Demand.The enrichment of combustion chamber regions heating resisting metal element, combustion is made by way of using 20-500KHz ratio-frequency welding remelting recrystallizations
Burn the mutually fully refinement of the alloys such as thick copper, nickel, the iron in room position, heat-resistant metal alloys are mutually tiny and abundant disperse, so that firing
The heat resistance for burning chamber region aluminium alloy is lifted at double.
Further, the reinforcing material, 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%, balance of aluminium and inevitable impurity, % therein are mass percent.
For above-mentioned problems of the prior art, the invention provides above-mentioned reinforcing material in second pouring aluminum piston
Application in combustion chamber.
On the basis of normal aluminum piston material is poured into a mould, second pouring is carried out when using the reinforcing material, can significantly carried
The heat resistance of high alumina piston combustion bowl.And the region beyond 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, the use requirement of piston can have preferably been met.
For technical problem present in above-mentioned prior art, aluminium is manufactured present invention also offers using above-mentioned reinforcing material
The method of piston, comprises the following steps：
1) aluminium liquid of setting quality normal components is poured into from the gate location of mould；
2) the above-mentioned reinforcing material of setting quality is poured into from the rising head of mould, the temperature of reinforcing material is 790-1050
DEG C, aluminum piston blank is obtained；
3) piston blank it is thermally treated, machining, cleaning preheating after, go to ratio-frequency welding remelting operation；
4) piston blank is placed in ratio-frequency welding remelting frock, ratio-frequency welding induction coil is positioned over the combustion of piston blank
Room position is burnt, is 20-500KHz by the frequency setting of ratio-frequency welding, Power Control completes piston in 20-200KW within 2min
The remelting of throat site.
First pour into a mould when using normal components aluminium liquid pour into a mould aluminum piston body, it is ensured that the casting character of aluminum piston and
The shaping of aluminum piston.Second pouring uses above-mentioned reinforcing material, and the temperature of reinforcing material is higher, so can be lived in aluminium after cast
The composition 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 thick copper in combustion chamber position through ratio-frequency welding remelting recrystallization mode.The alloys such as nickel, iron mutually fill
Divide refinement.Process is simple is recrystallized using ratio-frequency welding remelting, the shortcoming that landfilling area, MIG are easy to produce stomata is overcome.
At 790-1050 DEG C, temperature control is adjusted second pouring temperature of aluminum liquid control range by heterogeneity, ambrose alloy
The constituent contents such as iron are removed the limit when low, are controlled at 800 DEG C or so.The capping when constituent contents such as ambrose alloy iron 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 preferable stirring action to aluminium liquid, and with good heat insulation effect.
Further, the quality of reinforcing material and the mass ratio of normal components aluminium liquid are 1:8-1:20.
When reinforcing material and normal components aluminium liquid mass ratio within the range when, the aluminum piston that cast is obtained has more preferably
Heat resistance.
Further, step 2) in, funnel is placed in rising head, reinforcing material is drained to the combustion chamber of aluminum piston.
For above-mentioned problems of the prior art, present invention also offers the aluminum piston using above method manufacture,
The combustion chamber of the aluminum piston is followed successively by heating resisting metal enrichment of element area, Composition Transient and orthodox material composition from outside to inside
Area.
Further, step 4) in, 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 set to refine layer depth for 2-5mm.
Present invention also offers application of the above-mentioned aluminum piston in high-power, high load engine.
Because the combustion chamber of the aluminum piston has good thermal fatigue resistance, thus 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 into by piston combustion chamber region by second pouring, combustion chamber is formed in
The enrichment of region heating resisting metal element, and form transition zone to other positions of piston, the composition of transition zone is gradual change, therefore mistake
Cross that layer metallographic is comparatively fine, intensity is more or less the same with matrix area, can meet demand of the piston to performance.And combustion chamber regions due to
The enrichment of heating resisting metal element, metallographic is thick, therefore we are carried out using ratio-frequency welding remelting mode in following process to it
Sufficiently refinement, heating resisting metal element in the abundant disperse of combustion chamber regions so that the heat resistance of combustion chamber regions aluminium alloy
Lifting at double, test data can be seen that under the conditions of detonation pressure 21-24MPa is corresponding, and the combustion chamber throat life-span can improve 4-
7 times, piston life is correspondingly improved, so as to more severe to piston performance after solving current engine state five, state six
The requirement at quarter, is that good basis is created in the improvement of environment.Meanwhile, engine fuel consumption, the reduction of engine oil consumption, will be whole society
Mass energy can be saved.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.
Fig. 1 is structural representation when pouring into a mould normal components aluminium liquid；
Fig. 2 is structural representation when pouring into a mould second pouring material；
Fig. 3 is the structural representation of the aluminum piston blank that cast is obtained；
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 described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with 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
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Term explains part：
Reinforcing material, materials application herein during the second pouring after carrying out aluminum piston cast first, it is necessary to
Coordinate cast with the aluminium liquid poured into a mould first, the heat resistance of aluminum piston combustion chamber can be strengthened, so being named as increasing herein
Strong material.
The normal components aluminium liquid for being used in casting process first, can arbitrarily can be used for pouring into a mould aluminum piston for existing
Aluminium liquid, however, to ensure that the casting character and normal temperature performance of the aluminum piston of cast, nickel, copper, iron in the aluminium liquid of the normal components
Content Deng heating resisting metal element should be small.
Heating resisting metal enrichment of element area, because the region is formed by second pouring material cast herein, so should
The content of the heating resisting metal element such as nickel, iron, the copper in region is of a relatively high, and then causes that the region has preferable heat resistance,
It is named as heating resisting metal enrichment of element area.
Composition Transient, the region is that during second pouring, the second pouring material of high temperature is obtained with cast first
Material between there is the elements such as the region that obtains of diffusion, nickel, iron, the copper in the region content be less than heating resisting metal enrichment of element
Area, more than normal components area, so being named as Composition Transient.
Normal components area, as the term suggests, it is the position obtained by the cast of normal components aluminium liquid.
As shown in figure 1, aluminum piston mould includes backform 2 and external mold 3.
Embodiment 1
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, the composition 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, outside removal of impurities prime element, balance of aluminium.Temperature of aluminum liquid control
Scope processed is at 790-810 DEG C.
Step 2：Dipped with pony ladle 1 and with the aluminium liquid of electronic balance weighing normal components, then in the usual way from cast gate
Aluminium liquid is poured into, as shown in Figure 1.
Step 3：The aluminium liquid of high alloy content is dipped in self-induction stirring holding furnace with small pony ladle 4, is emitted certainly with metal funnel 5
Poured into mouthful, the combustion chamber that the reinforcing material is guided to aluminum piston is carried out by second pouring by funnel 5, as shown in Figure 2.Cast
The structural representation of the aluminum piston blank 6 for obtaining is as shown in Figure 3.
Step 4：Aluminum piston blank 6 is thermally treated, machine, cleaning is preheated, and goes to ratio-frequency welding remelting operation.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 5mm, connects high-frequency welding power supply with piston combustion bowl, frequency setting 20KHz,
Power Control completes remelting in 0.8 minute, as shown in Figure 4 in 200KW.
Step 6：Piston Machining is presented heating resisting metal element from the outside to the core into piston finished product 13, piston combustion bowl regional part
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
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, 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, the outer balance of aluminium of removal of impurities prime element.
Temperature of aluminum liquid control range is at 810-830 DEG C.
Step 2：Dipped with pony ladle 1 and with the aluminium liquid of electronic balance weighing normal components, then in the usual way from cast gate
Aluminium liquid is poured into, as shown in Figure 1.
Step 3：The aluminium liquid of high alloy content is dipped in self-induction stirring holding furnace with small pony ladle 4, is emitted certainly with metal funnel 5
Poured into mouthful, the combustion chamber that the reinforcing material is guided to aluminum piston is carried out by second pouring by funnel 5, as shown in Figure 2.Cast
The structural representation of the aluminum piston blank 6 for obtaining is as shown in Figure 3.
Step 4：Aluminum piston blank 6 is thermally treated, machine, cleaning is preheated, and goes to ratio-frequency welding remelting operation.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 4.5mm, connects high-frequency welding power supply, frequency setting with piston combustion bowl
60KHz, Power Control completes remelting in 1.2 minutes, as shown in Figure 4 in 150KW.
Step 6：Piston Machining is presented heating resisting metal element from the outside to the core into piston finished product 13, piston combustion bowl regional part
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
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, 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, the outer balance of aluminium of removal of impurities prime element.Temperature of aluminum liquid controls model
It is trapped among 850-880 DEG C.
Step 2 arrives step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 4.0mm, connects high-frequency welding power supply, frequency setting with piston combustion bowl
120KHz, Power Control completes remelting in 1.4 minutes, as shown in Figure 4 in 120KW.
Step 6 such as embodiment 1.
Embodiment 4
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, 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, the outer balance of aluminium of removal of impurities prime element.Aluminium liquid
Temperature controlling range is at 880-910 DEG C.
Step 2 arrives step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 3.2mm, connects high-frequency welding power supply, frequency setting with piston combustion bowl
340KHz, Power Control completes remelting in 1.5 minutes, as shown in Figure 4 in 100KW.
Step 6 such as embodiment 1.
Embodiment 5
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, and reinforcing material contains 5% nickel, 10% copper, 10% iron, 12% silicon, 0.4% magnesium, 3% titanium, 1%
Boron, 0.5% manganese, 0.18% zirconium, 0.18% vanadium, 0.5% scandium, the outer balance of aluminium of removal of impurities prime element.Temperature of aluminum liquid
Control range is at 850-880 DEG C.
Step 2 arrives step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 2.7mm, connects high-frequency welding power supply, frequency setting with piston combustion bowl
390KHz, Power Control completes remelting in 1.7 minutes, as shown in Figure 4 in 80KW.
Step 6 such as embodiment 1.
Embodiment 6
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, 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, the outer balance of aluminium of removal of impurities prime element.Temperature of aluminum liquid control
Scope processed is at 980-1010 DEG C.
Step 2 arrives step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 2.4mm, connects high-frequency welding power supply, frequency setting with piston combustion bowl
430KHz, Power Control completes remelting in 1.8 minutes, as shown in Figure 4 in 60KW.
Step 6 such as embodiment 1.
Embodiment 7
The method that aluminum piston is manufactured using reinforcing material, is comprised the following steps：
Step 1：In casting process, on the basis of original holding furnace, increase a sensing stirring holding furnace, for secondary
Cast is used, 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, the outer balance of aluminium of removal of impurities prime element.Temperature of aluminum liquid is controlled
Scope is at 930-960 DEG C.
Step 2 arrives step 4 such as embodiment 1.
Step 5：Rough turn piston 8 is placed into ratio-frequency welding remelting frock, piston is moved with frock, ratio-frequency welding induction coil
7 enter into piston combustion bowl position, and coil, apart from 2.0mm, connects high-frequency welding power supply, frequency setting with piston combustion bowl
500KHz, Power Control completes remelting in 1.9 minutes, as shown in Figure 4 in 30KW.
Step 6 such as embodiment 1.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of aluminum piston combustion chamber second pouring reinforcing material, it is characterised in that：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%, balance of aluminium and inevitable impurity, % therein are mass percent.
2. reinforcing material according to claim 1, it is characterised in that：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%, balance of aluminium and inevitable impurity, % therein are mass percent.
3. application of the reinforcing material described in claim 1 or 2 in second pouring aluminum piston combustion chamber.
4. using claim 1 institute described in 2 reinforcing material manufacture aluminum piston method, it is characterised in that：Comprise the following steps：
1) aluminium liquid of setting quality normal components is poured into from the gate location of mould；
2) reinforcing material described in the claim 1 or 2 of setting quality is poured into from the rising head of mould, the temperature of reinforcing material is
790-1050 DEG C, aluminum piston blank is obtained；
3) piston blank it is thermally treated, machining, cleaning preheating after, go to ratio-frequency welding remelting operation；
4) piston blank is placed in ratio-frequency welding remelting frock, ratio-frequency welding induction coil is positioned over the combustion chamber of piston blank
Position, is 20-500KHz by the frequency setting of ratio-frequency welding, and Power Control completes piston aditus laryngis in 20-200KW within 2min
The remelting at position.
5. method according to claim 4, it is characterised in that：The content of the ambrose alloy iron in second pouring material is higher, pours
The temperature of note is higher.
6. method according to claim 4, it is characterised in that：The reinforcing material is positioned over sensing stirring holding furnace
In.
7. method according to claim 4, it is characterised in that：The quality of reinforcing material and the mass ratio of normal components aluminium liquid
Example is 1:8-1:20.
8. method according to claim 4, it is characterised in that：Step 4) in, 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.
9. using the aluminum piston of claim 4-8 methods describeds manufacture, it is characterised in that：The combustion chamber of the aluminum piston by outward to
Inside it is followed successively by heating resisting metal enrichment of element area, Composition Transient and orthodox material Composition Region.
10. application of the aluminum piston described in claim 9 in high-power, high load engine.
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| CN103160715B (en) * | 2011-12-19 | 2016-08-03 | 中国兵器科学研究院宁波分院 | A kind of Gradient Aluminium Alloy cylinder jacket material and preparation method thereof |
| CN102943192B (en) * | 2012-10-29 | 2014-05-07 | 中国兵器工业第五二研究所 | Aluminum piston manufacturing method |
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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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