CN106994496B - A kind of forging method of steel bimetallic cracking connecting-rod - Google Patents
A kind of forging method of steel bimetallic cracking connecting-rod Download PDFInfo
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- CN106994496B CN106994496B CN201710243360.8A CN201710243360A CN106994496B CN 106994496 B CN106994496 B CN 106994496B CN 201710243360 A CN201710243360 A CN 201710243360A CN 106994496 B CN106994496 B CN 106994496B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Forging (AREA)
Abstract
The present invention provides a kind of forging method of steel bimetallic cracking connecting-rod, includes the following steps: S1: the slab of steel bimetallic cracking connecting-rod is prepared by casting technique, slab is made of gonnecting rod body, cracking zone and connecting rod cap；S2: carrying out normalized treatment to slab, for eliminating the network cementite in cracking material and interface zone, and bi-metal interface is promoted to form continuous diffusion layer；S3: slab is forged, and the flow direction of cracking material is controlled by forging die；S4: cleaning forging surface spikes, and Shot Blasting；S5: to forging modifier treatment, the mechanical property of connecting rod is made to reach requirement, and guarantees the cracking brittleness of cracking material；S6: opening up splitter, cracking, refitting, finally obtains steel bimetallic cracking connecting-rod finished product.The present invention can break through limitation of the cracking connecting-rod for material, solve the problems, such as that steel alloy is not used to the manufacturing of cracking connecting-rod.
Description
Technical field
The invention belongs to transmit the forging research field of power components material, and in particular to a kind of steel bimetallic cracking
The forging method of connecting rod.
Background technique
Critical component of the connecting rod as engine interior transmitting power, is subjected to the air pressure of combustion chamber generation, also
The load for needing to bear continuous checker, this requires connecting rods to have high-intensitive, high rigidity and good comprehensive mechanical property
Energy.Traditional connecting rod manufacture first passes through solid forging, then saws, mills, grinding the main body of processing connecting rod and the end face of connecting rod cap, finally exists
Attaching together for the two is realized by connection bolt in processing bolt hole on gonnecting rod body and connecting rod cap.The processing technology mistake of traditional connecting rod
In cumbersome, low efficiency, of poor quality, bearing capacity is weak.Therefore, novel cracking connecting-rod processing technology gradually replaces conventional linkage and adds
Work technique becomes the mainstream of connecting rod production.
The complexity of connecting rod working environment determines that common homogenous material is difficult to meet the quality requirement of cracking connecting-rod, when
Before, the main material that external cracking connecting-rod manufactures is the C70S6 high-carbon non-hardened and tempered steel of Germany, and France's development
SPLITASCO series high-carbon steel, this kind of materials have good brittle failure, but its hardness is larger, process tool abrasion compared with
Fastly, manufacturing cost is high.The non-hardened and tempered steel of country's manufacture connecting rod, mainly there is the vanadium such as 38MnVS, 40MnV, 48MnV system and manganese vanadium system.
But these materials still remain during actual Machining of Connecting Rod that cracking deformation, section is scaling-off, assembly precision is not high lacks
Point, the presence of these problems seriously hinder the production and development of domestic high quality connecting rod.
It is mainly main to the research of steel cracking connecting-rod at present in order to improve fracture quality and the assembly of steel cracking connecting-rod
Concentrate on two aspects: (1) research of cracking material.Addition trace alloying element is mainly passed through to the research of cracking material
Mn, S, V, Cr, P etc. improve the intensity of material, realize the brittle failure of material；(2) change the cracking mode of cracking connecting-rod.According to splitting
The driving method for solving equipment is different, mainly has three classes to crack process equipment at present, and respectively Wedge plate type cracks process equipment, liquid
Pressure piston pushes directly on formula cracking process equipment, horizontal force action formula cracking process equipment.Above method and technology all cannot be from
Limitation of the cracking connecting-rod for material is fundamentally broken through, common medium carbon steel, medium carbon alloy steel are still not used to cracking connecting-rod
The manufacturing.
Application No. is 201210586143.6, the patent of entitled " a kind of manufacturing method of steel cracking connecting-rod " is proposed
The gray cast iron that gap insertion when casting cracking connecting-rod at link body Yu big end end preheats, realizes bimetallic at interface
The metallurgical bonding at place.This steel cracking connecting-rod manufacturing method has the following disadvantages: that the fusing point of gray cast iron is lower, works as material of main part
When cast temperature is higher, cracking material is easy to excess molten, causes splitter that can not open up, and connecting rod can not also carry out cracking and add
Work.
Application No. is 201210111190.5, the patent of entitled " a kind of manufacturing method of bimetal composite cracking connecting-rod "
It proposes cast in present Piston Rods Die link body and connecting rod cap, isolation board, casting cracking is then detached when its half solidification
Material, the technique can be realized the manufacture of the compound cracking connecting-rod of bimetallic.The manufacturing method of this bimetallic cracking connecting-rod exists
Following disadvantage, when detaching isolation board, isolation board is easy to be adhered material of main part, is difficult smoothly to extract out, while when cracking material casting
Between be difficult accurately to grasp, bi-metal interface can not form stable combination interface.
Application No. is 201510660790.0, entitled " a kind of investment casting method of the compound cracking connecting-rod of bimetallic "
Patent proposes to prepare bimetallic cracking connecting-rod by full form casting process.What the manufacturing method of this bimetallic cracking connecting-rod was formed
Cracking connecting-rod does not pass through conducting forging processing, and for casting there are many casting flaws, interface quality is poor, and mechanical performance is not strong, tired
Labor intensity is low, cannot be directly used to engine.
In order to solve the problems, such as that above-mentioned patented technology exists, the forging side of steel bimetallic cracking connecting-rod proposed by the present invention
Method realizes that connecting rod slab is combined in the fusion of bi-metal interface by full form casting process, and the heat treatment before forging can increase
The diffusion of bi-metal interface element forms the diffusion layer of steady and continuous, enhances the bond strength at interface；It can be improved by forging
The comprehensive mechanical property of connecting rod forges defect existing for alloying part；Modifier treatment after forging can be link body material tissue
Quenched and tempered organization, cracking material are tempered martensite, are conducive to the cracking processing of subsequent connecting rod.
Summary of the invention
The purpose of the present invention is providing a kind of forging method of steel bimetallic cracking connecting-rod regarding to the issue above, can solve
Certainly common medium carbon steel, medium carbon alloy steel are not used to the manufacturing problem of cracking connecting-rod.
The technical scheme is that a kind of forging method of steel bimetallic cracking connecting-rod, which is characterized in that including such as
Lower step:
S1: the slab of steel bimetallic cracking connecting-rod is prepared by casting technique, slab is by gonnecting rod body, cracking zone and company
Bowl cover composition, wherein the cracking zone material is set as cracking material, between the gonnecting rod body and connecting rod cap；The gonnecting rod body and
Connecting rod cover material is set as material of main part；
S2: carrying out normalized treatment to slab, for eliminating the network cementite in cracking material and interface zone, and promotes
Bi-metal interface forms continuous diffusion layer；
S3: slab is forged, and the flowing of cracking material is controlled by setting bridge mouth on forging die；
S4: cleaning forging surface spikes, and Shot Blasting；
S5: to forging modifier treatment, the mechanical property of connecting rod is made to reach requirement, and guarantees the cracking brittleness of cracking material；
S6: opening up splitter, cracking, refitting, finally obtains steel bimetallic cracking connecting-rod finished product.
Further, material of main part described in step S1 is medium carbon steel or medium carbon alloy steel；The cracking material be containing
High-carbon alloy steel of the carbon amounts 0.7%~1.2%, metallographic structure are the globular pearlite tissue of annealed condition；Cracking material
With a thickness of 2mm~3mm.
Further, the step S1 is specific as follows:
S11: manufacture sand mold formwork；
S12: the cracking zone position after being 500 DEG C by the preheating temperature of cracking material, in insertion sand mold formwork；
S13: casting main material.
Further, normalized treatment described in step S2 is specific as follows:
S21: slab is heated to 800 DEG C~820 DEG C；
S22: heat preservation 6~10 hours, to promote material of main part and cracking material gonnecting rod body and cracking zone interface with
And the interface element phase counterdiffusion of cracking zone and connecting rod cap, continuous diffusion layer is formed, enhances the binding performance at interface, prevents
Subsequent forging crack；
S23: air-cooled processing.
Further, forging condition described in step S3 are as follows: initial forging temperature is 1100 DEG C, and final forging temperature is 800 DEG C；Slab
The total forging ratio for forging the height of front and back is 1.5~3.0；Forging process is divided into base, blocking and finish-forging, and wherein slab blocking is high
The forging ratio of degree accounts for the 60%~80% of total forging ratio.
Further, the forging die of the finish-forging process is surrounded by cracking zone bridge mouth and connecting rod area Qiao Kou in forging, wherein
The cracking zone bridge mouth is in the two sides of cracking zone centerline；The cracking zone bridge open height is the 2~3 of connecting rod area bridge open height
Times, for guiding metal to flow in finish-forging to the storehouse portion of intermediate cracking zone two sides to reduce metal flow resistance, control cracking
The position of material, and prevent from causing Interface Cracking when forging.
Further, the modifier treatment of the step S5 is that metastable quenching increases temperature tempering.
Compared with prior art, the beneficial effects of the present invention are:
1. the forging method of steel bimetallic cracking connecting-rod of the present invention fundamentally breaks through cracking connecting-rod for material
The limitation of material solves the problems, such as that common medium carbon steel, medium carbon alloy steel are not used to the manufacturing of cracking connecting-rod.
2. the forging method of steel bimetallic cracking connecting-rod of the present invention, solve bi-metal interface bond quality,
Forging interface is easy cracking, cracking material easily forges Crushing Problem, creates good technique for forging bimetallic cracking connecting-rod
Condition.
3. the forging method of steel bimetallic cracking connecting-rod of the present invention, technique both ensure that forging entirety mechanical property
Can, in turn ensure that the cracking brittleness of cracking material creates condition to crack and resetting.
4. the forging method of steel bimetallic cracking connecting-rod of the present invention, process reduce Machining of Connecting Rod process
It is middle to there is the problems such as cracking deformation, section is scaling-off, assembly precision is not high, the quality of cracking connecting-rod is improved, cracking is promoted and connects
The production and development of bar.
Detailed description of the invention
Fig. 1 is that the connecting rod of the forging method of steel bimetallic cracking connecting-rod of the present invention pours casting wax pattern group schematic diagram.
Fig. 2 is the compound cracking connecting-rod structural schematic diagram of bimetallic of the present invention.
Fig. 3 is finish-forging forging die schematic diagram of the present invention.
Fig. 4 is the B-B cross-sectional view of Fig. 3.
Fig. 5 is the A-A cross-sectional view of Fig. 3.
In figure:
1- gonnecting rod body, the cracking zone 2-, 3- connecting rod cap, 4- casting system, 5- splitter, 6- connection bolt, 7- crack interface,
The cracking zone 8- Qiao Kou, 9- connecting rod area Qiao Kou.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description, but protection scope of the present invention
It is not limited to this.
A kind of forging method of steel bimetallic cracking connecting-rod is specifically in accordance with the following steps:
S1: the slab of steel bimetallic cracking connecting-rod is prepared by casting technique, slab is by gonnecting rod body 1,2 and of cracking zone
Connecting rod cap 3 forms, as depicted in figs. 1 and 2, wherein 2 material of the cracking zone is set as cracking material, in the gonnecting rod body 1 and even
Between bowl cover 3；The gonnecting rod body 1 and 3 material of connecting rod cap are set as material of main part；The material of main part is that medium carbon steel or middle carbon close
Jin Gang；The cracking material is high-carbon alloy steel of the phosphorus content 0.7%~1.2%, and metallographic structure is annealed condition
Globular pearlite tissue；Cracking material with a thickness of 2mm~3mm, guarantee that cracking zone 2 will not be thicker because of cracking material when forging
And it cracks, and guarantee to carry out brittleness cracking.It is 25 steel, chemical component mass percent ginseng that the present invention, which selects link body material,
According to GB/T699-1999 " carbon constructional quality steel "；Cracking material is the ball that matrix is annealed condition after Overheating Treatment
The W18Cr4V of shape pearlitic structrure, chemical component mass percent is referring to GB/T 9943-2008 " high-speed tool steel ".It is described
Step S1 is specific as follows:
S11: manufacture sand mold formwork；
S12: after being 500 DEG C by the preheating temperature of cracking material, it is inserted into 2 position of cracking zone in sand mold formwork；
S13: casting main material.Pouring temperature is 1600 DEG C, after cooling, obtains bimetallic slab.
S2: carrying out normalized treatment to slab, for eliminating the network cementite in cracking material and interface zone, and promotes
Bi-metal interface forms continuous diffusion layer；Specific normalized treatment is as follows:
S21: slab is heated to 800 DEG C~820 DEG C；
S22: heat preservation 6~10 hours, to promote material of main part and cracking material at the interface of gonnecting rod body 1 and cracking zone 2
And the interface element phase counterdiffusion of cracking zone 2 and connecting rod cap 3, continuous diffusion layer is formed, the binding performance at interface is enhanced,
Prevent subsequent forging crack；
S23: air-cooled processing.
S3: slab is forged, and the flowing of cracking material is controlled by setting bridge mouth on forging die；Forging condition are as follows: forging of beginning
Temperature is 1100 DEG C, and final forging temperature is 800 DEG C；Total forging ratio of the height of slab forging front and back is 1.5~3.0, forging ratio
Calculating is to forge preceding height divided by height after forging；Forging process is divided into base, blocking and finish-forging, wherein the forging of slab blocking height
Make than account for total forging ratio 60%~80%.As shown in Fig. 3, Fig. 4 and Fig. 5, the surrounding of the forging die of the finish-forging process in forging
Equipped with cracking zone bridge mouth 8 and connecting rod area bridge mouth 9, wherein the cracking zone bridge mouth 8 is in the two sides of 2 center line of cracking zone；It is described to split
Solution 8 height of area's bridge mouth is 2~3 times of 9 height of connecting rod area bridge mouth, for guiding metal in finish-forging to reduce metal flow resistance
When to the storehouse portion of intermediate 2 two sides of cracking zone flow, control the position of cracking material, and prevent forging when cause Interface Cracking.
S4: cleaning forging surface spikes, and Shot Blasting；Waste heat after can use forging cuts off overlap, then high wind
It is cooling；Bimetallic cracking connecting-rod forging surface spikes are cleared up using abrasive machine, then cracking connects to treated using shot-blasting machine
Bar forging Shot Blasting.
S5: to forging modifier treatment, the mechanical property of connecting rod is made to reach requirement, and guarantees the cracking brittleness of cracking material；
The modifier treatment that metastable quenching increases temperature tempering is carried out to forging；Specially metastable quenching when forging is heated to 760~800
DEG C, held for some time, then workpiece quenches in low temperature salt-bath or alkaline bath furnace, and the temperature of salt bath or alkaline bath is attached in 340 DEG C of points
Closely, workpiece this temperature stop 2min~5min, then take out it is air-cooled, this type of cooling can make workpiece internal and external temperature compared with
To be uniform, while martensite transfor mation is carried out, quenching stress can be greatly reduced, prevent strain cracking；After high tempering will quench
Forging be heated to 500~600 DEG C, guarantee material of main part is quenched and tempered organization, and cracking material is tempered martensite；Quenched place
Material of main part intensity, plasticity and toughness can be improved in reason, and forging is made to have good comprehensive mechanical performance, prevents subsequent cracking from adding
Work is cracked or is deformed；
S6: opening up splitter, cracking, refitting, finally obtains steel bimetallic cracking connecting-rod finished product.Breaking test is carried out,
V-type splitter 5 is opened up by laser symmetrical along center line at big end end, using cracking apparatus, is split in cracking zone 2
Solution；Then gonnecting rod body 1 and connecting rod cap 3 are passed through for positioning datum by connection bolt 6 with the three-dimensional concavo-convex interface 7 that is formed after cracking
It is reset, the length for finally obtaining hard-cover bimetallic cracking connecting-rod increases 0.26mm compared with forging, is less than cracking and requires
0.5mm error requirements, it was demonstrated that the reasonability of the forging technology.
Although not each embodiment only includes one it should be appreciated that this specification describes according to various embodiments
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solutions in the various embodiments may also be suitably combined for bright book, and forming those skilled in the art can be with
The other embodiments of understanding.
The series of detailed descriptions listed above are illustrated only for possible embodiments of the invention,
The protection scope that they are not intended to limit the invention, it is all without departing from equivalent embodiment made by technical spirit of the present invention or change
It should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of forging method of steel bimetallic cracking connecting-rod, which comprises the steps of:
S1: preparing the slab of steel bimetallic cracking connecting-rod by casting technique, slab by gonnecting rod body (1), cracking zone (2) and
Connecting rod cap (3) composition, wherein the cracking zone (2) material is set as cracking material, the gonnecting rod body (1) and connecting rod cap (3) it
Between；The gonnecting rod body (1) and connecting rod cap (3) material are set as material of main part；The material of main part is medium carbon steel or medium carbon alloy steel；
The cracking material is high-carbon alloy steel of the phosphorus content 0.7% ~ 1.2%, and metallographic structure is the spherical pearly-lustre of annealed condition
Body tissue；
S2: carrying out normalized treatment to slab, for eliminating the network cementite in cracking material and interface zone, and promotes double gold
Belong to interface and forms continuous diffusion layer；
S3: slab is forged, and the flowing of cracking material is controlled by setting bridge mouth on forging die；
S4: cleaning forging surface spikes, and Shot Blasting；
S5: to forging modifier treatment, the mechanical property of connecting rod is made to reach requirement, and guarantees the cracking brittleness of cracking material；
S6: opening up splitter, cracking, refitting, finally obtains steel bimetallic cracking connecting-rod finished product.
2. the forging method of steel bimetallic cracking connecting-rod according to claim 1, which is characterized in that described in step S1
Cracking material with a thickness of 2mm ~ 3mm.
3. the forging method of steel bimetallic cracking connecting-rod according to claim 1, which is characterized in that the step S1 tool
Body is as follows:
S11: manufacture sand mold formwork；
S12: after being 500 DEG C by the preheating temperature of cracking material, it is inserted into cracking zone (2) position in sand mold formwork；
S13: casting material of main part.
4. the forging method of steel bimetallic cracking connecting-rod according to claim 1, which is characterized in that described in step S2
Normalized treatment is specific as follows:
S21: slab is heated to 800 DEG C ~ 820 DEG C；
S22: heat preservation 6 ~ 10 hours, to promote material of main part and cracking material at the interface of gonnecting rod body (1) and cracking zone (2)
And the interface element phase counterdiffusion of cracking zone (2) and connecting rod cap (3), continuous diffusion layer is formed, the combination at interface is enhanced
Performance prevents subsequent forging crack；
S23: air-cooled processing.
5. the forging method of steel bimetallic cracking connecting-rod according to claim 1, which is characterized in that described in step S3
Forging condition are as follows: initial forging temperature be 1100 DEG C, final forging temperature be 800 DEG C；Total forging ratio of height of slab forging front and back is
1.5~3.0；Forging process is divided into base, blocking and finish-forging, wherein the forging ratio of slab blocking height account for total forging ratio 60% ~
80%。
6. the forging method of steel bimetallic cracking connecting-rod according to claim 5, which is characterized in that the finish-forging process
Forging die be surrounded by cracking zone Qiao Kou (8) and connecting rod area Qiao Kou (9) in forging, wherein the cracking zone Qiao Kou (8) is being split
The two sides of Xie Qu (2) center line；Cracking zone Qiao Kou (8) height is 2 ~ 3 times of connecting rod area Qiao Kou (9) height, for subtract
Small metal flow resistance guides metal to flow in finish-forging to the storehouse portion of intermediate cracking zone (2) two sides, controls the position of cracking material
It sets, and prevents from causing Interface Cracking when forging.
7. the forging method of steel bimetallic cracking connecting-rod according to claim 1, which is characterized in that the step S5's
Modifier treatment is that metastable quenching increases temperature tempering.
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| CN201710243360.8A CN106994496B (en) | 2017-04-14 | 2017-04-14 | A kind of forging method of steel bimetallic cracking connecting-rod |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2296752A (en) * | 1995-01-09 | 1996-07-10 | Fischer Georg Fahrzeugtech | Method of manufacturing a connecting rod |
| CN102626777A (en) * | 2012-04-17 | 2012-08-08 | 江苏大学 | Manufacturing method of composite double-metal cracking connecting rod |
| CN103009020A (en) * | 2012-12-31 | 2013-04-03 | 江苏大学 | Manufacturing method for steel cracking connecting rod |
| CN105195673A (en) * | 2015-10-14 | 2015-12-30 | 江苏大学 | Investment casting method for double-metal composite splitting connection rod |
| CN106239043A (en) * | 2016-08-04 | 2016-12-21 | 苏州利达铸造有限公司 | A kind of processing method of engine link |
-
2017
- 2017-04-14 CN CN201710243360.8A patent/CN106994496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2296752A (en) * | 1995-01-09 | 1996-07-10 | Fischer Georg Fahrzeugtech | Method of manufacturing a connecting rod |
| CN102626777A (en) * | 2012-04-17 | 2012-08-08 | 江苏大学 | Manufacturing method of composite double-metal cracking connecting rod |
| CN103009020A (en) * | 2012-12-31 | 2013-04-03 | 江苏大学 | Manufacturing method for steel cracking connecting rod |
| CN105195673A (en) * | 2015-10-14 | 2015-12-30 | 江苏大学 | Investment casting method for double-metal composite splitting connection rod |
| CN106239043A (en) * | 2016-08-04 | 2016-12-21 | 苏州利达铸造有限公司 | A kind of processing method of engine link |
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| CN106994496A (en) | 2017-08-01 |
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