CN108203790A - A kind of integral high pressure common rail stainless steel and its forging method - Google Patents
A kind of integral high pressure common rail stainless steel and its forging method Download PDFInfo
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- CN108203790A CN108203790A CN201711480331.XA CN201711480331A CN108203790A CN 108203790 A CN108203790 A CN 108203790A CN 201711480331 A CN201711480331 A CN 201711480331A CN 108203790 A CN108203790 A CN 108203790A
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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- 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
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- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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Abstract
The present invention provides a kind of integral high pressure common rail stainless steel and its forging method, is related to stainless steel technical field.Integral high pressure common rail stainless steel of the present invention includes following raw material：Cr, Ni, C, Mn, Si, B, Mo, Cu, Al, V, P, S, surplus are iron and inevitable impurity.Mechanical performance, heat resistance, the toughness that integral high pressure common rail stainless steel of the present invention has had, and corrosion resistant, corrosion-resistant and wear-resisting property are good, the phenomenon that steel is cracked during the use of integral high pressure common rail stainless steel later stage is prevented, substantially increases the service life of steel, it is at low cost；The forging method of the integral high pressure common rail stainless steel improves the intensity of common rail, improves machine-shaping property, so as to improve common rail fuel injection system pressure, improve engine firing condition, reduce oil consumption, its blowdown performance indicator is improved, meeting discharge standard reduces environmental pollution.
Description
Technical field
The present invention relates to the hot worked technical fields of metal material, are related to stainless steel common rail monoblock type forging technology, tool
Body is related to a kind of integral high pressure common rail stainless steel and its forging method.
Background technology
Stainless steel is because with intensity height, corrosion resistant characteristic, it is stainless to be often processed blocking, plate, item, band, stick, pipe, filiform
Steel molded part, applied to all trades and professions.In recent years, although stainless steel output constantly increases, the quality of stainless steel is but not
People's will to the greatest extent, some stainless steel corrosion resistances are strong but ductility is bad；Some stainless steel chrome contents are high, corrosion resistance and antioxygen
It is relatively good to change performance, but mechanical performance and processing performance are poor, and the stainless steel manufacturing method of good combination property is relatively
Complexity, and cost is higher.
As Chinese Automobile Industry ' flourishes, when ranking among world car big country, energy consumption quickly increases, environment is dirty
The problems such as contaminating getting worse also emerges.It is reported that vehicle emission pollution has been increasingly becoming big and medium-sized cities central area
The major pollutants source of air.Improve engine firing condition, reduce oil consumption, improve its blowdown performance indicator or open
The automobile engine of clean energy resource is sent out, has become the inexorable trend of modern automobile industry.Realize such target, it is necessary to adopt
With new technology, the situation and development trend of these new technologies represent vehicle energy saving, the present situation of discharge and future development and become
Gesture.
Existing petrol engine oil supply system is welded using common-rail injection system, common rail by stainless steel tube both at home and abroad at present
It forms, due to the corrosivity of gasoline, stainless steel can only be used, but the welding performance of stainless steel is bad, soldering or brazing can only be used, led
It is 145MPa to cause common rail charge oil pressure, and controllable petrol engine NOx and particle (PM) are emitted in smaller numerical value, and discharge can
To meet five emission request of state；The year two thousand twenty whole nation enforces six discharge standard of state, and state's six discharge standards discharge is dropped than state five
Low 50%, because common-rail injection system pressure needs to can be only achieved six emission request of state more than 350Mpa, but existing welding
Structure common rail can only bear maximum 145Mpa pressure, therefore welding structure common rail can not meet the requirement of discharge upgrading.
Common-rail technology can not only reach higher injection pressure, the control for realizing injection pressure and distributive value, and can also
It realizes pilot injection and sectional ejecting, so as to optimize injection characteristics, reduces noise, greatly reduce the discharge of exhaust gas harmful components
Amount.
Invention content
For stainless steel machinery performance in the prior art, processing performance is poor the technical issues of, the present invention provides a kind of whole
Body high-pressure common rail stainless steel and its forging method.
In order to achieve the above object, technical scheme of the present invention is achieved by the following technical programs：
A kind of integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr19-22%, Ni10-16%,
C0.01-0.04%, Mn0.3-0.8%, Si0.3-0.9%, B0.03-0.07%, Mo0.2-0.4%, Cu0.25-0.45%,
Al0.02-0.06%, V0.02-0.08%, P≤0.04%, S≤0.03%, surplus are iron and inevitable impurity.
Preferably, the integral high pressure common rail stainless steel further includes the raw material of following weight percent：Ti0.02-
0.04%th, Nb0.8-1.2%, Zr0.01-0.03%, In0.02-0.05%.
Preferably, the integral high pressure common rail stainless steel further includes the raw material of following weight percent：Cr20-21.5%,
Ni12-15%, C0.01-0.03%, Mn0.4-0.7%, Si0.4-0.8%, B0.035-0.06%, Mo0.25-0.35%,
Cu0.28-0.4%, Al0.03-0.05%, V0.04-0.07%, P≤0.04%, S≤0.03%, surplus is iron and can not keep away
The impurity exempted from.
Preferably, the integral high pressure common rail stainless steel further includes the raw material of following weight percent：Cr19.5-
21%th, Ni13.5-14.5%, C0.015-0.035%, Mn0.5-0.75%, Si0.5-0.7%, B0.04-0.055%,
Mo0.28-0.33%, Cu0.3-0.38%, Al0.035-0.047%, V0.03-0.06%, P≤0.04%, S≤0.03%,
Ti0.025-0.035%, Nb0.9-1.1%, Zr0.015-0.025%, In0.03-0.04%, surplus is for iron and unavoidably
Impurity.
Preferably, the tensile strength of the integral high pressure common rail stainless steel be 600-750Mpa, the anti intercrystalline corrosion time >=
20h。
Preferably, the elongation of the integral high pressure common rail stainless steel is 50-65.3%.
Preferably, the shrinking percentage of the integral high pressure common rail stainless steel is 65-79.96%.
A kind of forging method of integral high pressure common rail stainless steel, includes the following steps：The inspection of raw and process materials-storage-under
Material-heating-roller forging sheet stamping-blocking-finish-forging-trimming-thermal recalibration-solution treatment-ball blast-visual examination-infiltration
Flaw detection-acid wash passivation-final inspection-packaging-storage；
Wherein, the blanking：High speed circular dribbling is used to saw the bar by length for 6mm, cuts into fixed length bar；
The heating：By Medium Frequency Induction Heating Furnace, under conditions of the beat of setting, heating and temperature control is existed
1100-1180 DEG C, temperature keeps stablizing to fixed length bar and come out of the stove；
The roller forging sheet stamping：By the cross-section analysis to final products, the isometric sectional view of product is drawn out, it will be isometric
Sectional view is converted into required blank drawing, by designing corresponding forge rolling die, will heat the fixed length bar come out of the stove, passes through roll forging
Method, blank roller is bundled into the shape of blank drawing, fixed length bar blank roller is bundled into blank；
The blocking：The blank that roller is bundled under the action of Preform Die, just has shape of product, obtains blocking blank；
The finish-forging：By blocking blank under the action of finish-forging die, the shape of product is completed, obtains the production of finish-forging formation
Product, and collect excess metal and be expressed to finish-forging model cavity；
The trimming：The product that excess metal is formed with finish-forging separates under the action of shaving die, will be extra
Waste material removal, form final products shape, then carry out subsequent processing and thermal recalibration-solution treatment-ball blast-appearance inspection
Look into-penetrant inspection-acid wash passivation-final inspection-packaging-storage.
The present invention provides a kind of integral high pressure common rail stainless steel and its forging method, and advantage is compared with prior art：
Integral high pressure common rail stainless steel of the present invention is added to the raw materials such as Ti, Nb, Zr, In, coordinates other raw materials, improves whole
Mechanical performance, heat resistance, the toughness of body high-pressure common rail stainless steel, and corrosion resistant, corrosion-resistant and wear-resisting property are good, prevent whole
The phenomenon that steel is cracked when the body high-pressure common rail stainless steel later stage uses, substantially increases the service life of steel, at low cost；And the entirety
High-pressure common rail stainless steel has higher tensile strength, and tensile strength reaches 750Mpa, and elongation is up to 65.3%, and shrinking percentage is high
Up to 79.96%, forging method process is few, less energy consumption, and lumber recovery is high, at low cost, in the forging of the integral high pressure common rail stainless steel
Field has effective economic benefit, causes cracking during steel billet is molding in order to prevent, adds in suitable Cu, can be notable
It reduces in annealing temperature-fall period and hardens tendency, improve machine-shaping property, so as to substantially increase the molding yield rate of steel billet, drop
Low production cost.
The forging method of integral high pressure common rail stainless steel of the present invention improves the intensity of common rail, improves machine-shaping property,
So as to improve common rail fuel injection system pressure, improve engine firing condition, reduce oil consumption, improve its blowdown performance indicator,
Meeting discharge standard reduces environmental pollution.
Description of the drawings
The content to this specification expressed by each width attached drawing and the label in figure are briefly described below：
Fig. 1 is the stress-strain curve diagram of product obtained by the forging method of embodiment 3；
Fig. 2 is the metallurgical microscopic of product obtained by the forging method of embodiment 3；
Specific embodiment
Below against attached drawing, by the exemplary description of implementation, the material for example involved to the specific embodiment of the present invention
Expect composition, effect and operation principle, manufacturing process and operate with method etc., be described in further detail, to help ability
The technical staff in domain has more complete, accurate and deep understanding to inventive concept of the invention, technical solution.
Integral high pressure common rail stainless steel 304 L (1.4307) (for the part in automobile engine)：
Integral high pressure common rail stainless steel provided by the invention is forged using 304L (1.4307) material, and being should as forging
Part in automobile engine belongs to security personnel's part.Its mechanical property requirements is as follows：
| 1. tensile strength | More than 600N/mm2 |
| 2. yield point | More than 260N/mm2 |
| 3. elongation percentage | More than 45% |
| 4. the contraction percentage of area | More than 40% |
| 5. hardness | HB140-220 |
Its product requirement and its feature：
Golden granularity requirements：5 grades or thinner；Intercrystalline corrosion is detected by A methods in ISO 3651-2, the test period is small for 20
When, there must not be intergranular corrosion cracks after bend test；100% acid wash passivation of forging surface, it is desired to which salt spray test is more than 240H.
In embodiment, the purpose of solution treatment：Solubility of the carbon in austenitic stainless steel has a significant impact with temperature.It is difficult to understand
Family name's body stainless steel has high chromium carbide and is precipitated, when chromium content is down to corrosion resistant when within the temperature range of through 400 DEG C~850 DEG C
It is chromium depleted there are crystal boundary at this time under corrosion boundary, intercrystalline corrosion can be generated, powder can be become when serious.So there is intercrystalline corrosion
The austenitic stainless steel of tendency should carry out solution heat treatment or stabilization processes.
The principle of solution heat treatment：Austenitic stainless steel is heated to 1100 DEG C or so, makes Carbide Phases all or basic
Dissolving, carbon are solid-solution in austenite, are then quickly cooled to room temperature, carbon is made to reach hypersaturated state.This heat treatment method is
Solution heat treatment.
Impeller blasting：Impeller blasting is to improve presentation quality to remove the impurity such as surface scale as its name suggests, is passed through
Shot-blast apparatus makes product turn in confined space turning in, while by diameter 0.6-1.0mm shot high speed impacts, makes product surface oxygen
Change skin and impurity removal, forging appearance is made to become beautiful, there is the progress using process after product.
Penetrant inspection：Using fluorescence method, fluorescence method is that the penetrating fluid containing fluorescent material is coated in by flaw detection part surface,
It penetrating into surface defect through capillary action, the penetrating fluid on surface is removed in then cleaning, and the penetrating fluid in defect is remained, into
Row developing, irradiates surface with ultraviolet radiator in the dark, and fault location sends out bright fluorescence.
Penetrant inspection operating process
1) it cleans
Before penetrant inspection, it is necessary to carry out removing surface and prerinse, remove seized part surface all contaminants.Beam worker
25 millimeters should be extended to the outside with position surrounding of detecting a flaw by making range.
2) it permeates
The length of time has a significant impact to the sensitivity for detecting crackle with temperature range in process of osmosis, permeates temperature
During in the range of 15-50 DEG C, time of penetration is generally divided into 5-10 minutes；When permeate temperature be reduced to 3-15 DEG C when should be according to temperature
It is appropriate to increase time of penetration.
3) it removes
When solvent removal is cleaned with water spray, for siphon pressure with 0.21MPa, hydraulic pressure is not greater than 0.34MPa, and water temperature does not surpass
Cross 43 DEG C.
4) it is dry
The useful clean cloth of dry method is dried, compressed air drying, hot blast drying, hot-air circulation drying device drying
The methods of.The drying temperature on checking matter surface should be controlled in the range of no more than 52 DEG C.
5) it images
The process of imaging is that the penetrating fluid of fault location is adsorbed to piece surface with developer, generates the defects of high-visible
Image.Time of developing is 10-30 minutes, and developer thickness is 0.05-0.07 millimeters.
6) it examines
Observing the mark trace of display should carry out after developer application in 7-30 minutes, such as show that the size of mark trace does not become
Change, then can be more than the above-mentioned time.
The flow of acid wash passivation：Degreasing-drift ice-acid wash passivation-secondary flow clear water rinsing-neutralization-drift ice-drying.It is right
The comprehensive acid wash passivation of stainless steel, removes the dirts such as all kinds of greasy dirts, rust, oxide skin, weldering spot, and processing rear surface becomes uniform silvery white
Color greatly improves stainless steel corrosion resistance.
Embodiment 1：
The present embodiment integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr19%, Ni10%,
C0.01%, Mn0.3%, Si0.3%, B0.03%, Mo0.2%, Cu0.25%, Al0.02%, V0.02%, P0.04%,
S0.03%, surplus are iron and inevitable impurity；
The forging method of the present embodiment integral high pressure common rail stainless steel, includes the following steps：
Gu the inspection of raw and process materials-storage-blanking-heating-roller forging sheet stamping-blocking-finish-forging-trimming-thermal recalibration-
Molten processing-ball blast-visual examination-penetrant inspection-acid wash passivation-final inspection-packaging-storage；
Wherein, blanking：High speed circular dribbling is used to saw the bar by length for 6mm, cuts into fixed length bar；
Heating：By Medium Frequency Induction Heating Furnace, under conditions of the beat of setting, by heating and temperature control at 1100 DEG C,
Temperature keeps stablizing to fixed length bar and come out of the stove；
Roller forging sheet stamping：By the cross-section analysis to final products, the shaft sections such as the isometric sectional view of product, general are drawn out
Figure is converted into required blank drawing, by designing corresponding forge rolling die, will heat the fixed length bar come out of the stove, passes through the side of roll forging
Blank roller is bundled into the shape of blank drawing by method, and fixed length bar blank roller is bundled into blank；
Blocking：The blank that roller is bundled under the action of Preform Die, just has shape of product, obtains blocking blank；
Finish-forging：By blocking blank under the action of finish-forging die, the shape of product is completed, obtains the product of finish-forging formation,
And it collects excess metal and is expressed to finish-forging model cavity；
Trimming：The product that excess metal is formed with finish-forging separates under the action of shaving die, and extra is given up
Material removal, forms final products shape, then carry out subsequent processing and thermal recalibration-solution treatment-ball blast-visual examination-oozes
Saturating flaw detection-acid wash passivation-final inspection-packaging-storage.
Embodiment 2：
The present embodiment integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr22%, Ni16%,
C0.04%, Mn0.8%, Si0.9%, B0.07%, Mo0.4%, Cu0.45%, Al0.06%, V0.08%, P0.02%,
S0.01%, surplus are iron and inevitable impurity；
The forging method of the present embodiment integral high pressure common rail stainless steel, includes the following steps：
Gu the inspection of raw and process materials-storage-blanking-heating-roller forging sheet stamping-blocking-finish-forging-trimming-thermal recalibration-
Molten processing-ball blast-visual examination-penetrant inspection-acid wash passivation-final inspection-packaging-storage；
Wherein, blanking：High speed circular dribbling is used to saw the bar by length for 6mm, cuts into fixed length bar；
Heating：By Medium Frequency Induction Heating Furnace, under conditions of the beat of setting, by heating and temperature control at 1180 DEG C,
Temperature keeps stablizing to fixed length bar and come out of the stove；
Roller forging sheet stamping：By the cross-section analysis to final products, the shaft sections such as the isometric sectional view of product, general are drawn out
Figure is converted into required blank drawing, by designing corresponding forge rolling die, will heat the fixed length bar come out of the stove, passes through the side of roll forging
Blank roller is bundled into the shape of blank drawing by method, and fixed length bar blank roller is bundled into blank；
Blocking：The blank that roller is bundled under the action of Preform Die, just has shape of product, obtains blocking blank；
Finish-forging：By blocking blank under the action of finish-forging die, the shape of product is completed, obtains the product of finish-forging formation,
And it collects excess metal and is expressed to finish-forging model cavity；
Trimming：The product that excess metal is formed with finish-forging separates under the action of shaving die, and extra is given up
Material removal, forms final products shape, then carry out subsequent processing and thermal recalibration-solution treatment-ball blast-visual examination-oozes
Saturating flaw detection-acid wash passivation-final inspection-packaging-storage.
Embodiment 3：
The present embodiment integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr20%, Ni12%,
C0.01%, Mn0.4%, Si0.4%, B0.035%, Mo0.25%, Cu0.28%, Al0.03%, V0.04%, Ti0.02%,
Nb0.8%, Zr0.01%, In0.02%, P0.04%, S0.02%, surplus are iron and inevitable impurity；
The forging method of the present embodiment integral high pressure common rail stainless steel, includes the following steps：
Gu the inspection of raw and process materials-storage-blanking-heating-roller forging sheet stamping-blocking-finish-forging-trimming-thermal recalibration-
Molten processing-ball blast-visual examination-penetrant inspection-acid wash passivation-final inspection-packaging-storage；
Wherein, blanking：High speed circular dribbling is used to saw the bar by length for 6mm, cuts into fixed length bar；
Heating：By Medium Frequency Induction Heating Furnace, under conditions of the beat of setting, by heating and temperature control at 1150 DEG C,
Temperature keeps stablizing to fixed length bar and come out of the stove；
Roller forging sheet stamping：By the cross-section analysis to final products, the shaft sections such as the isometric sectional view of product, general are drawn out
Figure is converted into required blank drawing, by designing corresponding forge rolling die, will heat the fixed length bar come out of the stove, passes through the side of roll forging
Blank roller is bundled into the shape of blank drawing by method, and fixed length bar blank roller is bundled into blank；
Blocking：The blank that roller is bundled under the action of Preform Die, just has shape of product, obtains blocking blank；
Finish-forging：By blocking blank under the action of finish-forging die, the shape of product is completed, obtains the product of finish-forging formation,
And it collects excess metal and is expressed to finish-forging model cavity；
Trimming：The product that excess metal is formed with finish-forging separates under the action of shaving die, and extra is given up
Material removal, forms final products shape, then carry out subsequent processing and thermal recalibration-solution treatment-ball blast-visual examination-oozes
Saturating flaw detection-acid wash passivation-final inspection-packaging-storage.
Product manufactured in the present embodiment is subjected to stretching experiment detection, stress-deformation detection, metallographic detection, testing result
Respectively such as table 1, Fig. 1 and Fig. 2.
1 embodiment of table, 3 product stretching experiment testing result
| Specimen shape | Round steel | Specimen size | 8.00 |
| Area of Sample/mm2 | 50.27 | The original gauge length of sample | 40.00 |
| Have no progeny gauge length/mm | 63.46 | Extensometer gage length/mm | 50 |
| Elongation after fracture/% | 58.65 | The contraction percentage of area/% | 75.21 |
| Tensile strength/MPa | 626.6 | Have no progeny area/mm2 | 11.85 |
| Yield strength/MPa | 286.8 |
Stretching experiment testing result is：Mechanical performance is qualified
Metallographic testing result in Fig. 2：
Microscopic structure 500X：About 6 grades of grain size number.
With iron chloride salt aqueous acid corrosion observation metallographic structure and grain size, such as figure 2 above, metallographic structure after test block Throwing light
For Twin austenite tissue, crystal grain is uniform, tissue without exception, grades by GB/T6394 standards, about 6 grades of grain size number.
Embodiment 4：
The present embodiment integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr21.5%, Ni15%,
C0.03%, Mn0.7%, Si0.8%, B0.06%, Mo0.35%, Cu0.4%, Al0.05%, V0.07%, Ti0.04%,
Nb1.2%, Zr0.03%, In0.05%, P0.035%, S0.025%, surplus are iron and inevitable impurity；
The forging method of the present embodiment integral high pressure common rail stainless steel is the same as embodiment 3.
Embodiment 5：
The present embodiment integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr19.5%, Ni13.5%,
C0.015%, Mn0.5%, Si0.5%, B0.04%, Mo0.28%, Cu0.3%, Al0.035%, V0.03%, P0.03%,
S0.026%, Ti0.025%, Nb0.9%, Zr0.015%, In0.03%, surplus are iron and inevitable impurity；
The forging method of the present embodiment integral high pressure common rail stainless steel is the same as embodiment 3.
Embodiment 6：
The present embodiment integral high pressure common rail stainless steel includes the raw material of following weight percent：Cr21%, Ni14.5%,
C0.035%, Mn0.75%, Si0.7%, B0.055%, Mo0.33%, Cu0.38%, Al0.047%, V0.06%,
P0.025%, S0.015%, Ti0.035%, Nb1.1%, Zr0.025%, In0.04%, surplus for iron and inevitably it is miscellaneous
Matter；
The forging method of the present embodiment integral high pressure common rail stainless steel is the same as embodiment 3.
Integral high pressure common rail stainless steel prepared by embodiment 1-6 carries out mechanical performance, Mechanics Performance Testing, mechanical property
Test is carried out according to standard GB/T228, GB/T229, and test result is shown in Table 1.
The different stainless steel bars of table 1 carry out mechanical performance, mechanical experimental results
The integral high pressure common rail stainless steel that it can be seen from 1 data of table prepared by the embodiment of the present invention carries out mechanical performance, power
Performance test is learned, the tensile strength of integral high pressure common rail stainless steel reaches 750Mpa, and elongation is up to 65.3%, and shrinking percentage is up to
79.96%, the stainless hardness of steel of integral high pressure common rail of the present invention is high, good mechanical property.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
The present invention is described in detail according to previous embodiment, it will be understood by those of ordinary skill in the art that：It still can be with
It modifies to the technical solution recorded in foregoing embodiments or equivalent replacement is carried out to which part technical characteristic；And
These modifications are replaced, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (8)
1. a kind of integral high pressure common rail stainless steel, which is characterized in that include the raw material of following weight percent：Cr19-22%,
Ni10-16%, C0.01-0.04%, Mn0.3-0.8%, Si0.3-0.9%, B0.03-0.07%, Mo0.2-0.4%,
Cu0.25-0.45%, Al0.02-0.06%, V0.02-0.08%, P≤0.04%, S≤0.03%, surplus is iron and can not keep away
The impurity exempted from.
2. integral high pressure common rail stainless steel according to claim 1, which is characterized in that the integral high pressure common rail stainless steel
Further include the raw material of following weight percent：Ti0.02-0.04%, Nb0.8-1.2%, Zr0.01-0.03%, In0.02-
0.05%.
3. integral high pressure common rail stainless steel according to claim 1, it is characterised in that：The integral high pressure common rail stainless steel
Further include the raw material of following weight percent：Cr20-21.5%, Ni12-15%, C0.01-0.03%, Mn0.4-0.7%,
Si0.4-0.8%, B0.035-0.06%, Mo0.25-0.35%, Cu0.28-0.4%, Al0.03-0.05%, V0.04-
0.07%th, P≤0.04%, S≤0.03%, surplus are iron and inevitable impurity.
4. integral high pressure common rail stainless steel according to claim 2, which is characterized in that the integral high pressure common rail is not
Rust steel further includes the raw material of following weight percent：Cr19.5-21%, Ni13.5-14.5%, C0.015-0.035%,
Mn0.5-0.75%, Si0.5-0.7%, B0.04-0.055%, Mo0.28-0.33%, Cu0.3-0.38%, Al0.035-
0.047%th, V0.03-0.06%, P≤0.04%, S≤0.03%, Ti0.025-0.035%, Nb0.9-1.1%, Zr0.015-
0.025%th, In0.03-0.04%, surplus are iron and inevitable impurity.
5. integral high pressure common rail stainless steel according to claim 1, it is characterised in that：The integral high pressure common rail stainless steel
Tensile strength for 600-750Mpa, the anti intercrystalline corrosion time >=20h.
6. integral high pressure common rail stainless steel according to claim 1, it is characterised in that：The integral high pressure common rail stainless steel
Elongation be 50-65.3%.
7. integral high pressure common rail stainless steel according to claim 1, it is characterised in that：The integral high pressure common rail stainless steel
Shrinking percentage be 65-79.96%.
8. a kind of forging method of the integral high pressure common rail stainless steel as described in claim 1-7 is any, which is characterized in that including with
Lower step：The inspection of raw and process materials-storage-blanking-heating-roller forging sheet stamping-blocking-finish-forging-trimming-thermal recalibration-solid solution
Processing-ball blast-visual examination-penetrant inspection-acid wash passivation-final inspection-packaging-storage；
Wherein, the blanking：High speed circular dribbling is used to saw the bar by length for 6mm, cuts into fixed length bar；
The heating：By Medium Frequency Induction Heating Furnace, under conditions of the beat of setting, by heating and temperature control in 1100-
1180 DEG C, temperature keeps stablizing to fixed length bar and come out of the stove；
The roller forging sheet stamping：By the cross-section analysis to final products, the shaft sections such as the isometric sectional view of product, general are drawn out
Figure is converted into required blank drawing, by designing corresponding forge rolling die, will heat the fixed length bar come out of the stove, passes through the side of roll forging
Blank roller is bundled into the shape of blank drawing by method, and fixed length bar blank roller is bundled into blank；
The blocking：The blank that roller is bundled under the action of Preform Die, just has shape of product, obtains blocking blank；
The finish-forging：By blocking blank under the action of finish-forging die, the shape of product is completed, obtains the product of finish-forging formation,
And it collects excess metal and is expressed to finish-forging model cavity；
The trimming：The product that excess metal is formed with finish-forging separates under the action of shaving die, and extra is given up
Material removal, forms final products shape, then carry out subsequent processing and thermal recalibration-solution treatment-ball blast-visual examination-oozes
Saturating flaw detection-acid wash passivation-final inspection-packaging-storage.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280759A (en) * | 2018-11-20 | 2019-01-29 | 江苏龙城精锻有限公司 | A kind of manufacturing method of integral fine crystal austenitic stainless steel hot forging |
| CN109648347A (en) * | 2019-01-07 | 2019-04-19 | 上海威克迈龙川汽车发动机零件有限公司 | A kind of integrally formed system of high pressure oil rail and technique |
| CN109940122A (en) * | 2019-03-26 | 2019-06-28 | 吉林大学 | The split type axle box near-net-shape method of standard EMU |
| CN110586827A (en) * | 2019-09-16 | 2019-12-20 | 江苏理研科技股份有限公司 | Forging process of fuel common rail |
| CN111545698A (en) * | 2020-05-13 | 2020-08-18 | 上海长特锻造有限公司 | Forging process of fuel common rail |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481778A (en) * | 2008-01-07 | 2009-07-15 | 宝山钢铁股份有限公司 | Austenic stainless steel strip and manufacturing method thereof |
| CN103917678A (en) * | 2011-11-02 | 2014-07-09 | 宝马股份公司 | Cost reduced steel for hydrogen technology with high resistance to hydrogen induced embrittlement |
| CN104114734A (en) * | 2012-02-15 | 2014-10-22 | 新日铁住金株式会社 | Rolled rod steel for hot forging, hot-forged roughly shaped material, and common rail and process for producing same |
| CN104178613A (en) * | 2014-08-07 | 2014-12-03 | 山东金马工业集团股份有限公司 | Controllable cooling method for high-pressure common rail |
| CN105408511A (en) * | 2013-07-29 | 2016-03-16 | 杰富意钢铁株式会社 | Ferritic stainless steel having excellent weld corrosion resistance |
| CN105441829A (en) * | 2016-01-11 | 2016-03-30 | 宝银特种钢管有限公司 | 08X18H10T stainless steel seamless steel tube for steam generator |
| CN107299295A (en) * | 2017-06-08 | 2017-10-27 | 上海威克迈龙川汽车发动机零件有限公司 | The moulding process of the oily rail of super-pressure stainless steel forging and stamping |
-
2017
- 2017-12-29 CN CN201711480331.XA patent/CN108203790A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481778A (en) * | 2008-01-07 | 2009-07-15 | 宝山钢铁股份有限公司 | Austenic stainless steel strip and manufacturing method thereof |
| CN103917678A (en) * | 2011-11-02 | 2014-07-09 | 宝马股份公司 | Cost reduced steel for hydrogen technology with high resistance to hydrogen induced embrittlement |
| CN104114734A (en) * | 2012-02-15 | 2014-10-22 | 新日铁住金株式会社 | Rolled rod steel for hot forging, hot-forged roughly shaped material, and common rail and process for producing same |
| CN105408511A (en) * | 2013-07-29 | 2016-03-16 | 杰富意钢铁株式会社 | Ferritic stainless steel having excellent weld corrosion resistance |
| CN104178613A (en) * | 2014-08-07 | 2014-12-03 | 山东金马工业集团股份有限公司 | Controllable cooling method for high-pressure common rail |
| CN105441829A (en) * | 2016-01-11 | 2016-03-30 | 宝银特种钢管有限公司 | 08X18H10T stainless steel seamless steel tube for steam generator |
| CN107299295A (en) * | 2017-06-08 | 2017-10-27 | 上海威克迈龙川汽车发动机零件有限公司 | The moulding process of the oily rail of super-pressure stainless steel forging and stamping |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280759A (en) * | 2018-11-20 | 2019-01-29 | 江苏龙城精锻有限公司 | A kind of manufacturing method of integral fine crystal austenitic stainless steel hot forging |
| CN109648347A (en) * | 2019-01-07 | 2019-04-19 | 上海威克迈龙川汽车发动机零件有限公司 | A kind of integrally formed system of high pressure oil rail and technique |
| CN109940122A (en) * | 2019-03-26 | 2019-06-28 | 吉林大学 | The split type axle box near-net-shape method of standard EMU |
| CN110586827A (en) * | 2019-09-16 | 2019-12-20 | 江苏理研科技股份有限公司 | Forging process of fuel common rail |
| CN111545698A (en) * | 2020-05-13 | 2020-08-18 | 上海长特锻造有限公司 | Forging process of fuel common rail |
| CN111545698B (en) * | 2020-05-13 | 2021-11-19 | 上海长特锻造有限公司 | Forging process of fuel common rail |
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Address after: 241002 No. 20 Tianjingshan Road, Wuhu High-tech Industrial Development Zone, Anhui Province Applicant after: Wuhu Sanlian Forging Co., Ltd. Address before: 241002 No. 20 Xishan Road, hi tech Industrial Development Zone, Yijiang District, Anhui, Wuhu Applicant before: Wuhu Sanlian Forge Co., Ltd. |
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Application publication date: 20180626 |