CN104174803A - High-pressure common rail pre-forging die - Google Patents
High-pressure common rail pre-forging die Download PDFInfo
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- CN104174803A CN104174803A CN201410441957.XA CN201410441957A CN104174803A CN 104174803 A CN104174803 A CN 104174803A CN 201410441957 A CN201410441957 A CN 201410441957A CN 104174803 A CN104174803 A CN 104174803A
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Abstract
The invention relates to a high-pressure common rail pre-forging die which comprises an upper pre-forging die and a lower pre-forging die. The bottom surface of the upper pre-forging die is matched with the upper surface of the lower pre-forging die to form cavities forming a rail body and a plurality of matched tubes, the cavity of the rail body is communicated with the cavities of the matched tubes, blocking bosses are formed at two ends of each cavity of the matched tubes on the bottom surface of the upper pre-forging die, blocking grooves matched with the bosses are formed in the two ends of each cavity of the matched tubes on the upper surface of the lower pre-forging die, and the blocking bosses and the blocking grooves form a blocking structure. According to the pre-forging die, blanks can be sufficiently blocked in a self-locking manner, the rate of defective products of finished forgings is lower than 2500ppm and far lower than the predicted average 6000ppm of the same industry, the material utilization rate of a unit product is increased to 78-85% from 65-72%, raw materials are saved, and comprehensive technical and economic effects of energy conservation and emission reduction are achieved.
Description
Technical field
The technical field that the present invention relates to engine fittings processing, more particularly, the present invention relates to a kind of high-pressure common rail Preform Die for automobile engine.
Background technology
High pressure co-rail system has greatly improved cornering ability and the discharge performance of automobile engine; along with the progress of emission aftertreatment technology and air-fuel ratio control technology; no longer to sacrifice the high thermal efficiency of engine as cost, be significant for realizing energy-saving and cost-reducing and environmental protection.High pressure co-rail system has become one of core technology of automobile industry engine art at present.In China, start to break external technical monopoly, progressively form autonomous core technology system.
In co-rail diesel engine, the pipe arrangement that is called common rail is arranged between pump and injection valve, the fuel of the high pressure that pressure accumulation is sent here from pump pressure in this common rail, from being assigned to fuel the injection valve of each cylinder here.In the fuel injection system of this joint-track type, pass through computer, from low-speed region to high-speed region, to carrying out high-precision control the opportunity of fuel injection amount or injection, compared with Diesel engine in the past, the performance that can realize the attenuating of the raising of significantly exhaust gas cleaning degree, burnup performance, output and noise, vibration improves.In order to tackle that day by day strict exhaust emissions requires and for the raising of the improvement of quietness, burnup performance, output, in advancing the high-pressure injection of co-rail diesel engine, to using the fuel injection pipe in common rail to require to have higher resistance to pressure.For this reason, my company has developed a kind of high-pressure common rail, and this product structure complexity is the elongated body of rod, above has eight boss, and in forging process, elongated body of rod part is yielding, and raised head face is difficult for filling, oxide skin not easy-clear in bosom in die cavity, and forging difficulty is large.The geometric properties of this series products is pressed by my company, and existing production technology process condition, has successively taked the multiple technologies methods such as multiple improvement base, blocking, but has all been difficult to reach design and use requirement because the groove of mould part causes blank lack of fill very deeply.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, the object of the present invention is to provide a kind of high-pressure common rail Preform Die that strengthens blank filling effect.
In order to solve the described technical problem of invention and to realize goal of the invention, the present invention has adopted following technical scheme:
A kind of high-pressure common rail Preform Die, it is characterized in that: described Preform Die is made up of blocking patrix and blocking counterdie, the upper surface of the basal surface of described blocking patrix and blocking counterdie coordinates and is formed with the die cavity that forms rail body and multiple pipe arrangements, and the die cavity of described rail body and the die cavity of pipe arrangement are interconnected; And on the basal surface of described blocking patrix, be formed with resistance material boss at the two ends of the die cavity of described pipe arrangement, and the upper surface of described blocking counterdie is formed with the resistance material groove matching with described boss at the two ends of the die cavity of described pipe arrangement, described resistance material boss and described resistance material groove form resistance material structure.
Wherein, the material that described Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.38 ~ 0.42wt%, the content of Cr is 8.8 ~ 10.2wt%, the content of Si is 0.35 ~ 0.40wt%, the content of Mn is 0.75 ~ 0.90wt%, the content of Ni is 0.32 ~ 0.40wt%, the content of Mo is 0.08 ~ 0.12wt%, content 0.40 ~ 0.45wt% of V, the content of N is 0.005 ~ 0.012wt%, the content of Al is 0.010 ~ 0.025wt%, the content of B is 0.20 ~ 0.25wt%, content≤0.030wt% of P, content≤0.025wt% of S, surplus is Fe and inevitable impurity.
Compared with prior art, high-pressure common rail Preform Die of the present invention has following beneficial effect:
1. make full use of the ability of mould self-locking blocking-up blank, significantly strengthened the technique effect of blocking, the defective products rate of finished product forging is lower than 2500 ppm, far below the average level of the same industry 6000 ppm that predict;
2. avoided, because the not enough forging boss that causes of the poly-material of blocking produces the critical defect that lacks material, having reduced significantly internal soundness cost, for example, reduced product detection, quality is reprocessed rework cost;
3. because having significant lock material function, reduced material consumption, unit product stock utilization, by 65～72%, brings up to 78～85%; Save raw material, realized the complex art economic effect of energy-saving and emission-reduction;
4. the control of product grain direction is more reasonable, and state is good, and surface crack defect rate is lower than 1000 ppm; Product surface roughness is low, less or without surface quality defects such as obvious surface oxidation pockmarks.
Brief description of the drawings
Fig. 1 is the structural representation of high-pressure common rail Preform Die and the cross-sectional structure schematic diagram in A-A cross section of prior art;
Fig. 2 is the structural representation of high-pressure common rail Preform Die of the present invention and the cross-sectional structure schematic diagram in A-A cross section;
Fig. 3 is the structural representation of patrix and the cross-sectional structure schematic diagram in A-A cross section of mould of the present invention;
Fig. 4 is the structural representation of counterdie and the cross-sectional structure schematic diagram in A-A cross section of mould of the present invention;
Fig. 5 is the schematic diagram of the high-pressure common rail Preform Die filling effect of prior art;
Fig. 6 is the schematic diagram of high-pressure common rail Preform Die filling effect of the present invention;
Fig. 7 is the graph of a relation that the present invention uses (0.15Cr+3V) in boron-containing die steel/(10N+0.75B+C) and impact flexibility.
Detailed description of the invention
Below with reference to specific embodiment, high-pressure common rail Preform Die of the present invention is further elaborated, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme.
The present invention, in the design basis of the Preform Die going out as shown in Figure 1, finds the lower surface design resistance material boss at blocking patrix 1, thereby forms resistance material structure as shown in Figure 2 at the upper surface design resistance material groove of blocking counterdie 2.Specifically, described Preform Die is made up of blocking patrix and blocking counterdie, and the upper surface of the basal surface of described blocking patrix and blocking counterdie coordinates and is formed with the die cavity that forms rail body and multiple pipe arrangements, and the die cavity of described rail body and the die cavity of pipe arrangement are interconnected; And on the basal surface of described blocking patrix, be formed with resistance material boss at the two ends of the die cavity of described pipe arrangement, and the upper surface of described blocking counterdie is formed with the resistance material groove matching with described boss at the two ends of the die cavity of described pipe arrangement, described resistance material boss and described resistance material groove form resistance material structure.In the closing course of mould, lock material ability that can be powerful, impels material to strengthen filling capacity to workpiece die cavity like this.As shown in Figure 3, in the former design basis of blocking patrix, increase resistance material boss, the associate features such as analysis of metallic materials thermal fluidity, mould inside die cavity feature, hot forging machine operating pressure, by simulation blocking state status, determine the position with respect to workpiece die cavity, determine length, width, height and the bull nose of boss; These parameter values can obtain by computer Simulation calculation, and can make corresponding adjustment according to actual situation.As shown in Figure 4, in the former design basis of blocking counterdie, increase resistance material groove, the associate features such as analysis of metallic materials thermal fluidity, mould inside die cavity feature, hot forging machine operating pressure, by simulation blocking state status, determine the position with respect to workpiece die cavity, determine length, width, the degree of depth and the bull nose of groove.Wherein, described groove in the longitudinal direction, is got the corresponding dimensions length of boss two ends and is respectively added 5mm, is as the criterion with the boss that can evenly contain upper mould outermost.And boss designs at patrix, groove design, at counterdie, is convenient to workman easy to operate, fit clearance 0.1～0.15mm.
In the present invention, the material that described Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.38 ~ 0.42wt%, the content of Cr is 8.8 ~ 10.2wt%, the content of Si is 0.35 ~ 0.40wt%, the content of Mn is 0.75 ~ 0.90wt%, the content of Ni is 0.32 ~ 0.40wt%, the content of Mo is 0.08 ~ 0.12wt%, content 0.40 ~ 0.45wt% of V, the content of N is 0.005 ~ 0.012wt%, the content of Al is 0.010 ~ 0.025wt%, the content of B is 0.20 ~ 0.25wt%, content≤0.030wt% of P, content≤0.025wt% of S, surplus is Fe and inevitable impurity.And in order to obtain high impact flexibility, in described boron-containing die steel, the mass percent of Cr, V, N, B and C also needs to meet following relational expression: 3.9≤(0.15Cr+3V)/(10N+0.75B+C)≤4.5.In the present invention, the blocking patrix after forging and the forging temperature of blocking counterdie are chilled to 550～600 DEG C by being not less than 800 DEG C, time span is 2.5 minutes; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to after 1030 ~ 1050 DEG C, be incubated 2 hours; After then stove is chilled to 930 ~ 950 DEG C, be incubated 2 hours, then in the quenching nitrate furnace of 160 ~ 200 DEG C, carry out coolingly, be 2.5 ~ 3.0 hours cool time, then in air, naturally cools to room temperature; Finally the blocking patrix after quenching and blocking counterdie are carried out to temper in 200 ~ 220 DEG C in heating furnace, the processing time is 6 ~ 8 hours, then the stove air cooling of coming out of the stove after being chilled to 100 DEG C.As shown in Figure 7, just can make the impact flexibility of used boron-containing die steel be not less than 15 Jcm by making the relational expression of component in described boron-containing die steel meet 3.9≤(0.15Cr+3V)/(10N+0.75B+C)≤4.5
-2; As preferably, meet following relational expression: 4.0≤(0.15Cr+3V)/(10N+0.75B+C)≤4.4.
After above-mentioned Preform Die is heat-treated, use digital control processing mould, the surface roughness that makes described rail build chamber and pipe arrangement die cavity not higher than
, surface smoothness is good; And the surface roughness of described resistance material boss and described resistance material groove is
, to increase the frictional resistance of material outflow.In a word, high-pressure common rail Preform Die of the present invention has been realized the inner gathering of blank effectively, for finish forging has been created advantage; And final the present invention compared with prior art, the filling effect contrast of blocker can be provided by the contrast of Fig. 5 and Fig. 6.
embodiment 1
In the present embodiment, the material that Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.38wt%, the content of Cr is 10.2wt%, the content of Si is 0.35wt%, the content of Mn is 0.90wt%, the content of Ni is 0.40wt%, and the content of Mo is 0.08wt%, the content 0.40wt% of V, the content of N is 0.012wt%, the content of Al is 0.015wt%, and the content of B is 0.20wt%, and the content of P is 0.021wt%, the content of S is 0.012wt%, and surplus is Fe and inevitable impurity.Described Preform Die is through following heat treatment: the blocking patrix after forging and the forging temperature of blocking counterdie are chilled to 550 DEG C by being not less than 800 DEG C, and time span is 2.5 minutes; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to after 1050 DEG C, be incubated 2 hours; After then stove is chilled to 930 DEG C, be incubated 2 hours, then in the quenching nitrate furnace of 160 ~ 200 DEG C, carry out coolingly, be 2.5 hours cool time, then in air, naturally cools to room temperature; Finally the blocking patrix after quenching and blocking counterdie are carried out to temper in 220 DEG C in heating furnace, the processing time is 6 hours, then the stove air cooling of coming out of the stove after being chilled to 100 DEG C.
embodiment 2
In the present embodiment, the material that Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.42wt%, the content of Cr is 10.2wt%, the content of Si is 0.40wt%, the content of Mn is 0.75wt%, the content of Ni is 0.32wt%, and the content of Mo is 0.12wt%, the content 0.45wt% of V, the content of N is 0.010wt%, the content of Al is 0.020wt%, and the content of B is 0.22wt%, and the content of P is 0.025wt%, the content of S is 0.018wt%, and surplus is Fe and inevitable impurity.Described Preform Die is through following heat treatment: the blocking patrix after forging and the forging temperature of blocking counterdie are chilled to 550 DEG C by being not less than 800 DEG C, and time span is 2.5 minutes; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to after 1050 DEG C, be incubated 2 hours; After then stove is chilled to 930 DEG C, be incubated 2 hours, then in the quenching nitrate furnace of 160 ~ 200 DEG C, carry out coolingly, be 2.5 hours cool time, then in air, naturally cools to room temperature; Finally the blocking patrix after quenching and blocking counterdie are carried out to temper in 220 DEG C in heating furnace, the processing time is 6 hours, then the stove air cooling of coming out of the stove after being chilled to 100 DEG C.
embodiment 3
In the present embodiment, the material that Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.40wt%, the content of Cr is 8.8wt%, the content of Si is 0.38wt%, the content of Mn is 0.85wt%, the content of Ni is 0.36wt%, and the content of Mo is 0.10wt%, the content 0.43wt% of V, the content of N is 0.006wt%, the content of Al is 0.010wt%, and the content of B is 0.20wt%, and the content of P is 0.023wt%, the content of S is 0.015wt%, and surplus is Fe and inevitable impurity.Described Preform Die is through following heat treatment: the blocking patrix after forging and the forging temperature of blocking counterdie are chilled to 550 DEG C by being not less than 800 DEG C, and time span is 2.5 minutes; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to after 1050 DEG C, be incubated 2 hours; After then stove is chilled to 930 DEG C, be incubated 2 hours, then in the quenching nitrate furnace of 160 ~ 200 DEG C, carry out coolingly, be 2.5 hours cool time, then in air, naturally cools to room temperature; Finally the blocking patrix after quenching and blocking counterdie are carried out to temper in 220 DEG C in heating furnace, the processing time is 6 hours, then the stove air cooling of coming out of the stove after being chilled to 100 DEG C.
comparative example 1
In this comparative example, the material that Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.38wt%, the content of Cr is 10.2wt%, the content of Si is 0.35wt%, the content of Mn is 0.90wt%, the content of Ni is 0.40wt%, and the content of Mo is 0.08wt%, the content 0.40wt% of V, the content of N is 0.012wt%, the content of Al is 0.015wt%, and the content of B is 0.20wt%, and the content of P is 0.021wt%, the content of S is 0.012wt%, and surplus is Fe and inevitable impurity.Described Preform Die is through following heat treatment: by the forging temperature of the blocking patrix after forging and blocking counterdie by being not less than 800 DEG C of air coolings to room temperature; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to 850 DEG C, be incubated 2 hours, be then warming up to after 1050 DEG C, be incubated 2 hours; Then in the quenching nitrate furnace of 150 ~ 180 DEG C, carry out coolingly, be 2.0 hours cool time, then in air, naturally cools to 150 DEG C; Finally the blocking patrix after quenching and blocking counterdie are carried out to temper in 600 DEG C in heating furnace, the processing time is 6 hours, then the stove air cooling of coming out of the stove after being chilled to 100 DEG C.
comparative example 2
In this comparative example, the material that Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.38wt%, the content of Cr is 10.2wt%, the content of Si is 0.35wt%, the content of Mn is 0.90wt%, the content of Ni is 0.40wt%, and the content of Mo is 0.08wt%, the content 0.40wt% of V, the content of N is 0.012wt%, the content of Al is 0.015wt%, and the content of B is 0.20wt%, and the content of P is 0.021wt%, the content of S is 0.012wt%, and surplus is Fe and inevitable impurity.Described Preform Die is through following heat treatment: the forging temperature of the blocking patrix after forging and blocking counterdie, by being not less than 800 DEG C of air coolings to 500 DEG C, is then warming up to 550 DEG C in heat-treatment furnace, is incubated 4 hours; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to after 1020 DEG C, be incubated 8 hours, then air-cooled to 400 DEG C; Then be heated to 650 DEG C, be incubated 5 hours; Then be heated to 820 DEG C, be incubated 10 hours, be then cooled to 650 DEG C, be incubated 4 hours, then cool to below 200 DEG C air cooling with the furnace.
The mechanical property of the boron-containing die steel being obtained by specific embodiments of the invention and comparative example is as follows:
the mechanical property of the boron-containing die steel that table 1 embodiment 1 ~ 3 and comparative example 1 ~ 2 obtain
| Mechanical property | Hardness (HRC) | Impact flexibility (Jcm <sup>-2</sup>） | Tensile strength (MPa) |
| Embodiment 1 | 59.3 | 24.3 | 753 |
| Embodiment 2 | 62.3 | 25.8 | 787 |
| Embodiment 3 | 61.8 | 23.1 | 769 |
| Comparative example 1 | 60.2 | 17.3 | 755 |
| Comparative example 2 | 52.5 | 20.1 | 756 |
For the ordinary skill in the art; specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (6)
1. a high-pressure common rail Preform Die, it is characterized in that: described Preform Die is made up of blocking patrix and blocking counterdie, the upper surface of the basal surface of described blocking patrix and blocking counterdie coordinates and is formed with the die cavity that forms rail body and multiple pipe arrangements, and the die cavity of described rail body and the die cavity of pipe arrangement are interconnected; And on the basal surface of described blocking patrix, be formed with resistance material boss at the two ends of the die cavity of described pipe arrangement, and the upper surface of described blocking counterdie is formed with the resistance material groove matching with described boss at the two ends of the die cavity of described pipe arrangement, described resistance material boss and described resistance material groove form resistance material structure.
2. high-pressure common rail Preform Die according to claim 1, is characterized in that: the surface roughness of described rail build chamber and pipe arrangement die cavity not higher than
, the surface roughness of described resistance material boss and described resistance material groove is
.
3. high-pressure common rail Preform Die according to claim 1, it is characterized in that: the material that described Preform Die uses is boron-containing die steel, the chemical composition of described boron-containing die steel and mass percent thereof are: the content of C is 0.38 ~ 0.42wt%, the content of Cr is 8.8 ~ 10.2wt%, the content of Si is 0.35 ~ 0.40wt%, the content of Mn is 0.75 ~ 0.90wt%, the content of Ni is 0.32 ~ 0.40wt%, the content of Mo is 0.08 ~ 0.12wt%, content 0.40 ~ 0.45wt% of V, the content of N is 0.005 ~ 0.012wt%, the content of Al is 0.010 ~ 0.025wt%, the content of B is 0.20 ~ 0.25wt%, content≤0.030wt% of P, content≤0.025wt% of S, surplus is Fe and inevitable impurity.
4. high-pressure common rail Preform Die according to claim 3, is characterized in that: in described boron-containing die steel, the mass percent of Cr, V, N, B and C meets following relational expression: 3.9≤(0.15Cr+3V)/(10N+0.75B+C)≤4.5.
5. high-pressure common rail Preform Die according to claim 3, is characterized in that: in described boron-containing die steel, the mass percent of Cr, V, N, B and C meets following relational expression: 4.0≤(0.15Cr+3V)/(10N+0.75B+C)≤4.4.
6. high-pressure common rail Preform Die according to claim 3, is characterized in that: the blocking patrix after forging and the forging temperature of blocking counterdie are chilled to 550～600 DEG C by being not less than 800 DEG C, and time span is 2.5 minutes; Then described blocking patrix and blocking counterdie are positioned in heat-treatment furnace and are heated to after 1030 ~ 1050 DEG C, be incubated 2 hours; After then stove is chilled to 930 ~ 950 DEG C, be incubated 2 hours, then in the quenching nitrate furnace of 160 ~ 200 DEG C, carry out coolingly, be 1.5 ~ 2 hours cool time, then in air, naturally cools to room temperature; Finally the blocking patrix after quenching and blocking counterdie are carried out to temper in 200 ~ 220 DEG C in heating furnace, the processing time is 6 ~ 8 hours, then the stove air cooling of coming out of the stove after being chilled to 100 DEG C.
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| CN201410441957.XA CN104174803B (en) | 2014-09-02 | 2014-09-02 | High-pressure common rail Preform Die |
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|---|---|---|---|
| CN201410441957.XA CN104174803B (en) | 2014-09-02 | 2014-09-02 | High-pressure common rail Preform Die |
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| CN104174803B CN104174803B (en) | 2017-06-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695249A (en) * | 2015-08-13 | 2017-05-24 | 江苏龙城精锻有限公司 | Forging forming process for high-pressure common-rail tube |
| CN109023104A (en) * | 2018-09-25 | 2018-12-18 | 成都先进金属材料产业技术研究院有限公司 | 4Cr13 plastic die steel and preparation method thereof |
| CN115673210A (en) * | 2022-10-31 | 2023-02-03 | 江苏理研科技股份有限公司 | Forging die for fuel common rail |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433983A (en) * | 2018-12-26 | 2019-03-08 | 金马工业集团股份有限公司 | Hot forging mode and hot forging device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004141883A (en) * | 2002-10-21 | 2004-05-20 | Honda Motor Co Ltd | Double acting type forging shaping method and apparatus therefor |
| CN201815620U (en) * | 2010-09-28 | 2011-05-04 | 西南大学 | Die for forging high-precision crank shaft |
| CN201895060U (en) * | 2010-11-22 | 2011-07-13 | 衡阳市鹏润锻造有限公司 | Flash structure of open forging die |
| CN101880836B (en) * | 2010-07-14 | 2012-02-01 | 西安交通大学 | Boron-containing die steel and heat treatment method thereof |
| CN202861300U (en) * | 2012-09-20 | 2013-04-10 | 芜湖三联锻造有限公司 | Knuckle preforging die structure |
| CN203140670U (en) * | 2013-01-31 | 2013-08-21 | 江苏龙城精锻有限公司 | Claw pole pre-forging die structure |
| JP5471476B2 (en) * | 2010-01-14 | 2014-04-16 | トヨタ自動車株式会社 | Closure device and closure method |
-
2014
- 2014-09-02 CN CN201410441957.XA patent/CN104174803B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004141883A (en) * | 2002-10-21 | 2004-05-20 | Honda Motor Co Ltd | Double acting type forging shaping method and apparatus therefor |
| JP5471476B2 (en) * | 2010-01-14 | 2014-04-16 | トヨタ自動車株式会社 | Closure device and closure method |
| CN101880836B (en) * | 2010-07-14 | 2012-02-01 | 西安交通大学 | Boron-containing die steel and heat treatment method thereof |
| CN201815620U (en) * | 2010-09-28 | 2011-05-04 | 西南大学 | Die for forging high-precision crank shaft |
| CN201895060U (en) * | 2010-11-22 | 2011-07-13 | 衡阳市鹏润锻造有限公司 | Flash structure of open forging die |
| CN202861300U (en) * | 2012-09-20 | 2013-04-10 | 芜湖三联锻造有限公司 | Knuckle preforging die structure |
| CN203140670U (en) * | 2013-01-31 | 2013-08-21 | 江苏龙城精锻有限公司 | Claw pole pre-forging die structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106695249A (en) * | 2015-08-13 | 2017-05-24 | 江苏龙城精锻有限公司 | Forging forming process for high-pressure common-rail tube |
| CN106695249B (en) * | 2015-08-13 | 2019-12-13 | 江苏龙城精锻有限公司 | Forging forming process of high-pressure common rail pipe |
| CN109023104A (en) * | 2018-09-25 | 2018-12-18 | 成都先进金属材料产业技术研究院有限公司 | 4Cr13 plastic die steel and preparation method thereof |
| CN115673210A (en) * | 2022-10-31 | 2023-02-03 | 江苏理研科技股份有限公司 | Forging die for fuel common rail |
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| Publication number | Publication date |
|---|---|
| CN104174803B (en) | 2017-06-13 |
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