CN109487159A - A kind of A694GRF60 carbon steel forgings and preparation method thereof - Google Patents
A kind of A694GRF60 carbon steel forgings and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
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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
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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
- 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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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Abstract
The present invention provides a kind of A694GRF60 carbon steel forgings and preparation method thereof.A694GRF60 carbon steel forgings material provided by the invention is the micro content for increasing the alloying elements such as Cr, Ni, Mo, Nb, V and optimizing each ingredient on the basis of common low carbon structural steel, and the present invention has advanced optimized preparation process condition, so that the advantages that product of the invention intensity with higher, good plasticity and toughness and low-temperature impact toughness, performance indexes has been more than American Iron and Steel Institute ASTM A694 F60 standard, has reached the advanced level of similar products at home and abroad.
Description
Technical field
The invention belongs to the manufacture field of metal material, in particular to a kind of A694GRF60 carbon steel forgings and its preparation
Method.
Background technique
The material of oil production equipment forging mainly has 4130, F22,8630 etc., be mainly used for deep-sea valve body, piston rod,
Valve deck etc..The forging of China's production at present is primarily present that mechanical performance is unqualified and there are loose, micro-crack, coarse grains in inside
The defects of, the big oil production equipment manufacturer in the world three produces deep-sea oil recovery equipment without the forging of China.Therefore it prepares high-quality
The forging of amount is current urgent problem to be solved.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention provides a kind of A694GRF60 carbon steel forgings and its preparation side
Method.A694GRF60 carbon steel forgings material provided by the invention is micro on the basis of common low carbon structural steel increases
The alloying elements such as Cr, Ni, Mo, Nb, V and the content for optimizing each ingredient, and the present invention has advanced optimized preparation process item
Part, so that the advantages that product of the invention intensity with higher, good plasticity and toughness and low-temperature impact toughness, properties
Index has been more than American Iron and Steel Institute ASTMA694 F60 standard, has reached the advanced level of similar products at home and abroad.
The present invention provides a kind of A694GRF60 carbon steel forgings, wherein the ingredient of A694GRF60 carbon steel forgings and its
Mass percentage content (wt.%) are as follows: C:0.09-0.10；Si:0.20-0.23；Mn:1.30-1.32；Cr:0.16-0.19；
Ni:0.79-0.82；Mo:0.21-0.23；Nb:0.013-0.015；V:0.016-0.019； P:0.005-0.007；S:
0.001-0.004；Surplus is Fe.
Further, the ingredient and its mass percentage content of A694GRF60 carbon steel forgings of the present invention
(wt.%) preferably are as follows: C:0.10；Si:0.22；Mn:1.31；Cr:0.18；Ni:0.81；Mo:0.22；Nb:0.014； V:
0.018；P:0.005；S:0.001；Surplus is Fe.
The tensile strength of A694GRF60 carbon steel forgings of the invention in the case where yield behavior is 85K reaches 586Mpa.
The ballistic work of A694GRF60 carbon steel forgings of the invention at -46 DEG C can reach 27J.
Invention further provides a kind of preparation methods of A694GRF60 carbon steel forgings, comprising the following steps:
Prepare before step (1) forging: preparing steel ingot by above-mentioned composition；
Step (2) forging: steel ingot described in step (1) is formed into forging by five fire time forging process；The forging
Initial forging temperature is 1220 DEG C, and final forging temperature is 800 DEG C, forging ratio 5-1:1；
Step (3) heat treatment after forging: the forging that step (2) is obtained carries out normalized treatment, and the normalizing temperature is 920-
950 DEG C, room temperature is air-cooled to after keeping the temperature 10-15h；
Step (4) property heat treatment: it is quenched and returns after the forging after step (3) heat treatment is carried out roughing
Fire processing, steps are as follows:
Quenching treatment: the forging after roughing is warming up to 920-950 DEG C, average heating rate is≤200 DEG C/h, is protected
Warm 6-8h makes its abundant austenitizing, and Putting into water rapidly is cooling after heat preservation, controls time≤90 second that screw clamp is shifted out of furnace；
Strict control is wanted to enter water water temperature≤28 DEG C and output water temperature≤49 DEG C when cooling, cooling trough wants strong stirring；
Tempering: carrying out tempering for the forging after quenching treatment, and tempering temperature is 560-600 DEG C, keeps the temperature 12-
After 15h hours it is air-cooled to get arrive the A694GRF60 carbon steel forgings.
Further, riser end is having a size of 1130mm, mouth of a river end having a size of 970mm, the octagonal steel that ingot body length is 1790mm
The specific forging step of ingot are as follows:
One heat forging: steel ingot chamfered edge is round as a ball, cut steel ingot water riser, pulling to 2200mm long；Forging temperature 1220
℃-800℃；
Second fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；Forging temperature 1220
℃-800℃；Forging ratio 4.62:1；
Third fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；Forging temperature 1220
℃-800℃；Forging ratio 4.42:1；
4th fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2000mm long；Round as a ball microcephaly；Forging
1220 DEG C -800 DEG C of temperature；Forging ratio 4.347:1；
5th fire time forging: progressive die tool carry out jumping-up, it is round as a ball, rush blind hole, round as a ball major part molding；Overturning, punching, finishing
Molding；1220 DEG C -800 DEG C of forging temperature；Forging ratio 1.7:1.
Further, normalizing temperature described in step (3) is preferably 940 DEG C, and soaking time is preferably 13h.
Further, in step (4) quenching treatment, preferably are as follows: the forging after roughing is warming up to 930 DEG C, it is average to heat up
Rate is≤200 DEG C/h, and heat preservation 7h makes its abundant austenitizing.
Further, in step (4) quenching treatment, the speed of the strong stirring is 300m3/ hour.
Further, in step (4) tempering, tempering temperature is preferably 580 DEG C, and soaking time is preferably 13 hours.
What a kind of A694GRF60 carbon steel forgings provided by the invention and preparation method thereof obtained has the beneficial effect that:
(1) A694GRF60 carbon steel forgings material provided by the invention is micro on the basis of common low carbon structural steel
It increases the alloying elements such as Cr, Ni, Mo, Nb, V and optimizes the content of each ingredient, Ni is austenite former, be can be improved
Plasticity, toughness and low-temperature impact toughness；Mo is carbide, prevents temper brittleness, can improve tempering
Stability is very helpful to impact a piece of wood serving as a brake to halt a carriage after raising high tempering.Cr, Ni, Mo element are all the members for improving harden ability
Element, and three kinds of elements are added become apparent to the effect for improving harden ability simultaneously.Nb, V are thin in addition to the carbide for producing disperse
Change outside crystal grain, and since these tiny compounds are in alternate Dispersed precipitate, to generate precipitation strength, refinement crystal grain can be same
Shi Tigao intensity and toughness.The present invention has further regulated and controled the content of each element, improves the comprehensive mechanical property of product.
(2) present invention has advanced optimized the preparation methods of A694GRF60 carbon steel forgings, the strict control forging temperature that begins
The defects of spending, final forging temperature, greatly reducing micro-crack, coarse grains.
(3) in the preparation process of A694GRF60 carbon steel forgings of the invention, strictly regulate and control forging ratio, can ensure that in this way
Close structure after forging, and coarse austenite grain can be smashed, field trash Dispersed precipitate eliminates banded structure, mitigates each
Anisotropy.
(4) the five fire time forging technologies used in preparation process of the invention, there is very big forging ratio, can be with soldering steel
Ingot internal porosity, loose and crackle, the arborescent structure and field trash and then refinement crystal grain of broken steel ingot, make the second phase in steel
It is evenly distributed, to increase the consistency of forging and improve the comprehensive performance of forging, increases the items of forging mechanical performance
The same sex.
(5) the heat treatment after forging technique and property heat treatment technique used in preparation process of the invention, heat treatment after forging
The temperature and soaking time of process control heat treatment；When having regulated and controled the temperature and heat preservation of heat treatment in property heat treatment technique
Between, and further in property heat treatment technique, Putting into water rapidly is cooling after heat preservation, and strict control enters water water temperature and output water temperature,
Cooling water wants strong stirring, it is ensured that fast quickly cooling is saturating, improves the depth of hardening zone of product, improves the mechanical property of product.
Specific embodiment
Technical solution of the present invention is described further in conjunction with the embodiments.Following embodiment is only used for clearly
Illustrate technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
The ingredient and its mass percentage content (wt.%) for the A694GRF60 carbon steel forgings that the present invention is prepared
Are as follows: C:0.09-0.10；Si:0.20-0.23；Mn:1.30-1.32；Cr:0.16-0.19；Ni:0.79-0.82； Mo:0.21-
0.23；Nb:0.013-0.015；V:0.016-0.019；P:0.005-0.007；S:0.001-0.004；Surplus is Fe.
The ingredient and its mass percentage content (wt.%) of A694GRF60 carbon steel forgings of the present invention are preferred
Are as follows: C:0.10；Si:0.22；Mn:1.31；Cr:0.18；Ni:0.81；Mo:0.22；Nb:0.014；V:0.018； P:0.005；
S:0.001；Surplus is Fe.
A kind of preparation method of A694GRF60 carbon steel forgings provided by the invention, comprising the following steps:
Prepare before step (1) forging: preparing steel ingot by above-mentioned composition；
Step (2) forging: by riser end having a size of 1130mm, mouth of a river end having a size of 970mm, ingot body length be 1790mm
Octagon ingot carry out five fire time forging form forging, specifically:
One heat forging: steel ingot chamfered edge is round as a ball, cut steel ingot water riser, pulling to 2200mm long；Forging temperature 1220
℃-800℃；
Second fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；Forging temperature 1220
℃-800℃；Forging ratio 4.62:1；
Third fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；Forging temperature 1220
℃-800℃；Forging ratio 4.42:1；
4th fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2000mm long；Round as a ball microcephaly；Forging
1220 DEG C -800 DEG C of temperature；Forging ratio 4.347:1；
5th fire time forging: progressive die tool carry out jumping-up, it is round as a ball, rush blind hole, round as a ball major part molding；Overturning, punching, finishing
Molding；1220 DEG C -800 DEG C of forging temperature；Forging ratio 1.7:1.
Step (3) heat treatment after forging: the forging that step (2) is obtained carries out normalized treatment, and the normalizing temperature is 940
DEG C, room temperature is air-cooled to after keeping the temperature 13h；
Step (4) property heat treatment: it is quenched and returns after the forging after step (3) heat treatment is carried out roughing
Fire processing, steps are as follows:
Quenching treatment: the forging after roughing is warming up to 930 DEG C, average heating rate is 50 DEG C/h, and heat preservation 7h makes it
Abundant austenitizing, Putting into water rapidly is cooling after heat preservation, controls time≤90 second that screw clamp is shifted out of furnace；Cooling Shi Yaoyan
Lattice are controlled into water water temperature≤28 DEG C and output water temperature≤49 DEG C, and cooling trough wants strong stirring, mixing speed 300m3/ small
When.
Tempering: carrying out tempering for the forging after quenching treatment, and tempering temperature is 580 DEG C, keeps the temperature 13h hours
Afterwards it is air-cooled to get arrive A694GRF60 carbon steel forgings.
Embodiment 2
The ingredient and its mass percentage content (wt.%) for the A694GRF60 carbon steel forgings that the present invention is prepared
Are as follows: C:0.09-0.10；Si:0.20-0.23；Mn:1.30-1.32；Cr:0.16-0.19；Ni:0.79-0.82； Mo:0.21-
0.23；Nb:0.013-0.015；V:0.016-0.019；P:0.005-0.007；S:0.001-0.004；Surplus is Fe.
The ingredient and its mass percentage content (wt.%) of A694GRF60 carbon steel forgings of the present invention are preferred
Are as follows: C:0.10；Si:0.22；Mn:1.31；Cr:0.18；Ni:0.81；Mo:0.22；Nb:0.014；V:0.018； P:0.005；
S:0.001；Surplus is Fe.
A kind of preparation method of A694GRF60 carbon steel forgings provided by the invention, comprising the following steps:
Prepare before step (1) forging: preparing steel ingot by above-mentioned composition；
Step (2) forging: by riser end having a size of 1130mm, mouth of a river end having a size of 970mm, ingot body length be 1790mm
Octagon ingot carry out five fire time forging form forging, specifically:
One heat forging: steel ingot chamfered edge is round as a ball, cut steel ingot water riser, pulling to 2200mm long；Forging temperature 1220
℃-800℃；
Second fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；Forging temperature 1220
℃-800℃；Forging ratio 4.62:1；
Third fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；Forging temperature 1220
℃-800℃；Forging ratio 4.42:1；
4th fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2000mm long；Round as a ball microcephaly；Forging
1220 DEG C -800 DEG C of temperature；Forging ratio 4.347:1；
5th fire time forging: progressive die tool carry out jumping-up, it is round as a ball, rush blind hole, round as a ball major part molding；Overturning, punching, finishing
Molding；1220 DEG C -800 DEG C of forging temperature；Forging ratio 1.7:1.
Step (3) heat treatment after forging: the forging that step (2) is obtained carries out normalized treatment, and the normalizing temperature is 920
DEG C, room temperature is air-cooled to after keeping the temperature 15h；
Step (4) property heat treatment: it is quenched and returns after the forging after step (3) heat treatment is carried out roughing
Fire processing, steps are as follows:
Quenching treatment: the forging after roughing is warming up to 950 DEG C, average heating rate is 100 DEG C/h, and heat preservation 6h makes
Its abundant austenitizing, Putting into water rapidly is cooling after heat preservation, controls time≤90 second that screw clamp is shifted out of furnace；It is wanted when cooling
Strict control enters water water temperature≤28 DEG C and output water temperature≤49 DEG C, and cooling trough wants strong stirring, mixing speed 300m3/ small
When.
Tempering: carrying out tempering for the forging after quenching treatment, and tempering temperature is 600 DEG C, keeps the temperature 12h hours
Afterwards it is air-cooled to get arrive A694GRF60 carbon steel forgings.
The A694GRF60 carbon steel forgings resultant force data comparison obtained by above-mentioned manufacturing method, referring to following table:
As seen from the above table, the mechanical property parameters of the product of above-mentioned two embodiment are above National Technical code requirement
And industry conventional material, product of the invention intensity with higher, good plasticity and toughness and low-temperature impact toughness.
All explanations being not directed to belong to techniques known in a specific embodiment of the invention, can refer to public affairs
Know that technology is implemented.
Above-mentioned specific embodiment is to a kind of A694GRF60 carbon steel forgings proposed by the present invention and preparation method thereof
Technical idea specific support, this does not limit the scope of protection of the present invention, it is all according to technology proposed by the present invention think
Think, any equivalent variations or equivalent modifications done on the basis of the technical program, belongs to technical solution of the present invention protection
Range.
Claims (9)
1. a kind of A694GRF60 carbon steel forgings, which is characterized in that the ingredient and its matter of the A694GRF60 carbon steel forgings
It measures degree (wt.%) are as follows: C:0.09-0.10；Si:0.20-0.23；Mn:1.30-1.32；Cr:0.16-0.19；Ni:
0.79-0.82；Mo:0.21-0.23；Nb:0.013-0.015；V:0.016-0.019；P:0.005-0.007；S:0.001-
0.004；Surplus is Fe.
2. a kind of A694GRF60 carbon steel forgings according to claim 1, which is characterized in that the A694GRF60 carbon
The ingredient and its mass percentage content (wt.%) of steel forgings are as follows: C:0.10；Si:0.22；Mn:1.31；Cr:0.18；Ni:
0.81；Mo:0.22；Nb:0.014；V:0.018；P:0.005；S:0.001；Surplus is Fe.
3. a kind of A694GRF60 carbon steel forgings according to claim 1 or 2, which is characterized in that the A694GRF60
Tensile strength of the carbon steel forgings in the case where yield behavior is 85K reaches 586Mpa；The A694GRF60 carbon steel forgings are -46
DEG C when ballistic work reach 27J.
4. a kind of preparation method of A694GRF60 carbon steel forgings, which is characterized in that the A694GRF60 carbon steel forgings
Preparation method the following steps are included:
Prepare before step (1) forging: preparing steel ingot by above-mentioned composition；
Step (2) forging: steel ingot described in step (1) is formed into forging by five fire time forging process；The beginning of the forging forges
Temperature is 1220 DEG C, and final forging temperature is 800 DEG C, forging ratio 5-1:1；
Step (3) heat treatment after forging: the forging that step (2) is obtained carries out normalized treatment, and the normalizing temperature is 920-950
DEG C, room temperature is air-cooled to after keeping the temperature 10-15h；
Step (4) property heat treatment: it is done at quenching treatment and tempering after the forging after step (3) heat treatment is carried out roughing
Reason, steps are as follows:
Quenching treatment: the forging after roughing is warming up to 920-950 DEG C, average heating rate is≤200 DEG C/h, keeps the temperature 6-8h
Make its abundant austenitizing, Putting into water rapidly is cooling after heat preservation, controls time≤90 second that screw clamp is shifted out of furnace；It is wanted when cooling
Strict control enters water water temperature≤28 DEG C and output water temperature≤49 DEG C, and cooling trough wants strong stirring；
Tempering: the forging after quenching treatment is subjected to tempering, tempering temperature is 560-600 DEG C, and heat preservation 12-15h is small
When after it is air-cooled to get arrive the A694GRF60 carbon steel forgings.
5. a kind of preparation method of A694GRF60 carbon steel forgings according to claim 4, which is characterized in that riser end
Specific forging step having a size of 1130mm, mouth of a river end having a size of 970mm, the octagon ingot that ingot body length is 1790mm are as follows:
One heat forging: steel ingot chamfered edge is round as a ball, cut steel ingot water riser, pulling to 2200mm long；1220 DEG C of forging temperature-
800℃；
Second fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；1220 DEG C -800 of forging temperature
℃；Forging ratio 4.62:1；
Third fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2100mm long；1220 DEG C -800 of forging temperature
℃；Forging ratio 4.42:1；
4th fire time forging: jumping-up to height 1000mm, chamfered edge are round as a ball, pull out to 2000mm long；Round as a ball microcephaly；Forging temperature
1220℃-800℃；Forging ratio 4.347:1；
5th fire time forging: progressive die tool carry out jumping-up, it is round as a ball, rush blind hole, round as a ball major part molding；Overturning, punching, finishing molding；
1220 DEG C -800 DEG C of forging temperature；Forging ratio 1.7:1.
6. a kind of preparation method of A694GRF60 carbon steel forgings according to claim 4, which is characterized in that step (3)
940 DEG C of the normalizing temperature, soaking time 13h.
7. a kind of preparation method of A694GRF60 carbon steel forgings according to claim 4, which is characterized in that step (4)
In quenching treatment, the forging base after roughing is warming up to 930 DEG C, average heating rate is≤200 DEG C/h, and heat preservation 7h fills it
Divide austenitizing.
8. a kind of preparation method of A694GRF60 carbon steel forgings according to claim 4, which is characterized in that step (4)
In quenching treatment, the speed of the strong stirring is 300m3/ hour.
9. a kind of preparation method of A694GRF60 carbon steel forgings according to claim 4, which is characterized in that step (4)
In tempering, tempering temperature is 580 DEG C, keeps the temperature 13 hours.
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| CN201811502781.9A Pending CN109487159A (en) | 2018-12-10 | 2018-12-10 | A kind of A694GRF60 carbon steel forgings and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110791716A (en) * | 2019-12-04 | 2020-02-14 | 中国第一重型机械股份公司 | Manufacturing method of 18MnCrNiMo magnetic yoke integral forging of hydroelectric pumped storage unit |
| CN112063929A (en) * | 2020-09-21 | 2020-12-11 | 江阴方圆环锻法兰有限公司 | Novel bearing forging for shield tunneling machine and forging method thereof |
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| CN104032237A (en) * | 2014-05-15 | 2014-09-10 | 合肥通用机械研究院 | Composite microalloyed high-strength steel forging with tensile strength of 700MPa and production method thereof |
| CN108085590A (en) * | 2017-11-23 | 2018-05-29 | 南阳汉冶特钢有限公司 | A kind of thickness is 150~200mm high-strength hardened and tempered steel plate S500QZ35 and its production method |
| CN108754308A (en) * | 2018-05-25 | 2018-11-06 | 张家港海锅新能源装备股份有限公司 | The production method of tubing head high strength steel forging raw material in a kind of deep-sea oil production equipment |
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| CN104032237A (en) * | 2014-05-15 | 2014-09-10 | 合肥通用机械研究院 | Composite microalloyed high-strength steel forging with tensile strength of 700MPa and production method thereof |
| CN108085590A (en) * | 2017-11-23 | 2018-05-29 | 南阳汉冶特钢有限公司 | A kind of thickness is 150~200mm high-strength hardened and tempered steel plate S500QZ35 and its production method |
| CN108754308A (en) * | 2018-05-25 | 2018-11-06 | 张家港海锅新能源装备股份有限公司 | The production method of tubing head high strength steel forging raw material in a kind of deep-sea oil production equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110791716A (en) * | 2019-12-04 | 2020-02-14 | 中国第一重型机械股份公司 | Manufacturing method of 18MnCrNiMo magnetic yoke integral forging of hydroelectric pumped storage unit |
| CN112063929A (en) * | 2020-09-21 | 2020-12-11 | 江阴方圆环锻法兰有限公司 | Novel bearing forging for shield tunneling machine and forging method thereof |
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Application publication date: 20190319 |