CN112941415B - Nuclear power SA182F36 valve body forging - Google Patents

Nuclear power SA182F36 valve body forging Download PDF

Info

Publication number
CN112941415B
CN112941415B CN202110163672.4A CN202110163672A CN112941415B CN 112941415 B CN112941415 B CN 112941415B CN 202110163672 A CN202110163672 A CN 202110163672A CN 112941415 B CN112941415 B CN 112941415B
Authority
CN
China
Prior art keywords
percent
equal
less
furnace
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110163672.4A
Other languages
Chinese (zh)
Other versions
CN112941415A (en
Inventor
张涛
莫敦
邓吉宁
刘仁奇
张京蓉
何跃川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangyou Changxiang Special Steel Manufacturing Co ltd
Original Assignee
Jiangyou Changxiang Special Steel Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangyou Changxiang Special Steel Manufacturing Co ltd filed Critical Jiangyou Changxiang Special Steel Manufacturing Co ltd
Priority to CN202110163672.4A priority Critical patent/CN112941415B/en
Publication of CN112941415A publication Critical patent/CN112941415A/en
Application granted granted Critical
Publication of CN112941415B publication Critical patent/CN112941415B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C22C33/06—Making ferrous alloys by melting using master alloys
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • 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
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a nuclear power SA182F36 valve body forging. The material comprises the following chemical elements in percentage by weight: 0.1 to 0.17 percent of C, 0.25 to 0.5 percent of Si, 0.8 to 1.2 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1 to 1.3 percent of Ni, less than or equal to 0.02 percent of V, 0.25 to 0.5 percent of Mo, less than or equal to 0.02 percent of N, 0.015 to 0.045 percent of Nb, less than or equal to 0.05 percent of Al, 0.5 to 0.8 percent of Cu, and the balance of Fe. The nuclear power SA182F36 valve body forged piece provided by the invention can meet the requirements of 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged pieces, and can also meet the requirements of 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged pieces after simulated stress relief treatment.

Description

Nuclear power SA182F36 valve body forging
Technical Field
The invention relates to the technical field of nuclear power manufacturing, in particular to a nuclear power SA182F36 valve body forging.
Background
The fusion of light atomic nucleus and the fission of heavy atomic nucleus can release energy, which are called nuclear fusion energy and nuclear fission energy respectively, and release a great deal of heat during fusion or fission, the energy is converted according to nuclear energy, mechanical energy and electric energy, and the electric power can be called nuclear power. Because a large amount of heat can be released during nuclear fusion or nuclear fission, a valve body forging applied to the nuclear power manufacturing technology needs to have high-temperature resistance.
SA182F36 in American ASME standard is essentially heat-resistant steel developed on the basis of German standard WB36, is widely applied to steam pipelines, valve bodies and the like in thermal power generating sets, meets American standard ASME-2017SA182F36, does not have the requirement of 0 ℃ impact energy, but has the requirement of 0 ℃ impact energy for a 600MW demonstration fast reactor engineering nuclear-grade valve body; therefore, the existing SA182F36 can not meet the requirement of China on 600MW demonstration fast reactor engineering nuclear-grade valve forgings and can not be applied to 600MW demonstration fast reactor engineering nuclear-grade valve bodies.
Disclosure of Invention
The invention aims to provide a nuclear power SA182F36 valve body forged piece, and aims to solve the technical problems that the existing SA182F36 cannot meet the requirement of China on a nuclear-grade valve body forged piece of a 600MW demonstration fast reactor project and cannot be applied to a nuclear-grade valve body of the 600MW demonstration fast reactor project.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a nuclear power SA182F36 valve body forging, which comprises the following chemical elements in percentage by weight: 0.1 to 0.17 percent of C, 0.25 to 0.5 percent of Si, 0.8 to 1.2 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1 to 1.3 percent of Ni, less than or equal to 0.02 percent of V, 0.25 to 0.5 percent of Mo, less than or equal to 0.02 percent of N, 0.015 to 0.045 percent of Nb, less than or equal to 0.05 percent of Al, 0.5 to 0.8 percent of Cu, and the balance of Fe.
Further, the weight percentages of the chemical elements are respectively as follows: 0.12 to 0.15 percent of C, 0.3 to 0.4 percent of Si, 0.9 to 1.1 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.1 to 1.2 percent of Ni, less than or equal to 0.02 percent of V, 0.35 to 0.45 percent of Mo, less than or equal to 0.02 percent of N, 0.025 to 0.035 percent of Nb, less than or equal to 0.05 percent of Al, 0.6 to 0.7 percent of Cu, and the balance of Fe.
Further, the weight percentages of the chemical elements are respectively as follows: 0.12 percent of C, 0.35 percent of Si, 1 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.2 percent of Ni, less than or equal to 0.02 percent of V, 0.4 percent of Mo, less than or equal to 0.02 percent of N, 0.03 percent of Nb, less than or equal to 0.05 percent of Al, 0.6 percent of Cu and the balance of Fe.
Further, the weight percentages of the chemical elements are respectively as follows: 0.1 percent of C, 0.5 percent of Si, 0.8 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1 percent of Ni, less than or equal to 0.02 percent of V, 0.5 percent of Mo, less than or equal to 0.02 percent of N, 0.015 percent of Nb, less than or equal to 0.05 percent of Al, 0.8 percent of Cu and the balance of Fe.
Further, the chemical elements are as follows by weight percent: 0.17 percent of C, 0.25 percent of Si, 1.2 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.3 percent of Ni, less than or equal to 0.02 percent of V, 0.25 percent of Mo, less than or equal to 0.02 percent of N, 0.045 percent of Nb, less than or equal to 0.05 percent of Al, 0.5 percent of Cu, and the balance of Fe.
The preparation method of the nuclear power SA182F36 valve body forging comprises the following steps:
(1) smelting
Proportioning and smelting according to the weight percentage of the chemical elements to obtain a steel ingot; the method comprises the following specific steps:
a1, mixing according to the weight percentage of chemical elements; the ingredients comprise ferroalloy, and the ferroalloy is subjected to high-temperature baking pretreatment after the ingredients are mixed; the pretreatment is to put the ferroalloy into a baking furnace to be heated to 750 ℃, and preserve heat for at least 6h at the temperature of 730-;
a2, entering an electric furnace, adding all ingredients in the step A1 into the electric furnace for smelting, sampling when the temperature of melting and cleaning is more than or equal to 1560 ℃, and entering an oxidation period when the decarburization quantity is more than or equal to 0.20%; the oxidation method adopted in the oxidation period is as follows: the oxidation temperature is more than or equal to 1560 ℃, oxygen blowing and decarburization are carried out, the decarburization quantity is more than or equal to 0.20 percent, the final carbon content is controlled to be 0.05 percent, the P content is less than or equal to 0.005 percent, and after slagging-off and tapping, the oxidizing slag is completely removed from the steel ladle again;
a3, feeding into an LF furnace, and adding 400Kg of lime, 150Kg of cap slag and 100Kg of deoxidizer (calcium powder) per ton according to the total amount of the LF furnace in the refining process; adding lime twice, wherein the lime is added 300Kg per ton according to the total refining amount of the LF after the lime is added into the LF for the first time; the second addition is based on the slagging effect, the addition amount is 100Kg of lime per ton according to the total amount of the current refining of the LF furnace; keeping the white slag for more than or equal to 30 minutes, maintaining a strong reducing atmosphere, and continuously adding a deoxidizing agent (calcium powder), wherein the adding amount of the deoxidizing agent (calcium powder) is 20-50Kg per ton according to the total amount of the LF furnace in the current refining process; sampling, analyzing and controlling the components: according to the mass percentage, the content of C is 0.12 percent, the content of Si is 0.24 percent, the content of Mn is 1.10 percent, the content of Cr is 0.20 percent, the content of Mo is 0.43 percent, the content of Nb is 0.035 percent, the content of Cu is 0.55 percent, and the content of Ni is 1.20 percent; after the components are adjusted, vacuumizing for more than or equal to 30 minutes; feeding Al wire and Ca wire in the furnace during tapping; feeding Al wire to the content of 0.040%; feeding Ca wire 5 meters per ton according to the total amount of the current refining in the LF furnace; deslagging by 65-75%;
a4, feeding into a VD furnace, adding 1kg of Si-Ba-Ca line per ton according to the total refining amount of the VD furnace, vacuumizing, wherein the ultimate vacuum pressure is less than or equal to 67Pa, and the time is more than or equal to 12 min; the temperature of the hoisting ladle is 1585-1590 ℃;
a5, pouring, after weak argon blowing is finished, according to the total refining amount of a VD furnace, adding 1 kg/ton covering agent into a steel ladle, 1 kg/ton carbonized rice husk, pouring under the protection of argon, and pouring a ingot body: finishing within 7 minutes to 9 minutes; pouring a riser: completing the filling within 4-6 minutes; the pouring temperature is 1580-1585 ℃; and obtaining a steel ingot.
(2) Forging
B1, heating the steel ingot obtained in the step (1) in two sections through a gas heating furnace, wherein the temperature of the first section is less than or equal to 650 ℃, and preserving heat at the temperature for 0.6-0.8 minute according to the maximum thickness of the steel ingot per millimeter; the second section is 1200 plus or minus 20 ℃, the temperature is kept at the temperature, the heat preservation time is 0.6 to 0.8 minute per millimeter according to the maximum thickness of the steel ingot, and the first procedure is a pressing jaw after the heat preservation is finished; then returning to the furnace and heating to 1200 +/-20 ℃, preserving heat at the temperature for 0.6-0.8 min per millimeter according to the maximum thickness of the steel ingot, and then carrying out the second step: upsetting and drawing to a required size;
b2, forging, wherein the forging ratio is more than or equal to 5, the initial forging temperature is 1200 +/-20 ℃, the final forging temperature is more than or equal to 850 ℃, the air cooling temperature after forging is more than or equal to 500 ℃, and the forged blank is put into a furnace for pre-treatment after normalizing and tempering forging to obtain a connected forged piece;
(3) roughing
Sawing the conjoined forged piece obtained in the step (2) into a single valve body forged piece;
(4) thermal treatment for hardening and tempering
D1, quenching, namely putting the valve body forged piece roughly processed in the step (3) into a heat treatment furnace, heating to 920 +/-10 ℃ at a heating rate of less than or equal to 220 ℃/h, preserving heat at the temperature for 2.9-3.1 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then cooling with water to a temperature of less than or equal to 100 ℃;
d2, tempering, heating the valve body forged piece processed in the step D1 in a heat treatment furnace at a heating rate of less than or equal to 220 ℃/h to 650 +/-10 ℃, preserving heat at the temperature for 2.9-3.1 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then air-cooling to room temperature to obtain a valve body forged piece finished product.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
the nuclear power SA182F36 valve body forged piece provided by the invention can meet the requirement of a 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged piece, can also meet the requirement of a 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged piece after simulated stress relief treatment, and can be applied to a 600MW demonstration fast reactor engineering nuclear grade valve body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
a nuclear power SA182F36 valve body forging comprises the following chemical elements in percentage by weight:
0.12 percent of C, 0.35 percent of Si, 1 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.2 percent of Ni, less than or equal to 0.02 percent of V, 0.4 percent of Mo, less than or equal to 0.02 percent of N, 0.03 percent of Nb, less than or equal to 0.05 percent of Al, 0.6 percent of Cu and the balance of Fe.
The preparation method comprises the following steps:
(1) smelting of
The method comprises the following steps of proportioning and smelting according to the weight percentage of the chemical elements to obtain a steel ingot, and specifically comprises the following steps:
a1, mixing according to the weight percentage of chemical elements; the ingredients comprise ferroalloy, and the ferroalloy is subjected to high-temperature baking pretreatment after the ingredients are mixed, wherein the pretreatment is to put the ferroalloy into a baking furnace to be heated to 750 ℃, and keep the temperature at 750 ℃ for 7 hours;
a2, feeding the mixture into an electric furnace, adding all the ingredients in the step A1 into the electric furnace for smelting, sampling when the temperature of melting and cleaning is more than or equal to 1560 ℃, and feeding the mixture into an oxidation period when the decarburization amount is more than or equal to 0.20%; the oxidation method adopted in the oxidation period is as follows: the oxidation temperature is more than or equal to 1560 ℃, oxygen blowing and decarburization are carried out, the decarburization quantity is more than or equal to 0.20 percent, the final carbon content is controlled to be 0.05 percent, the P content is less than or equal to 0.005 percent, and after slagging-off and tapping, the oxidizing slag is completely removed from the steel ladle again;
a3, feeding into an LF furnace, and adding 400Kg of lime, 150Kg of cap slag and 100Kg of deoxidizer (calcium powder) per ton according to the total amount of the LF furnace in the refining process; adding lime twice, wherein the adding amount of lime for the first time is 300Kg per ton according to the total refining amount of the LF furnace after the lime enters the LF furnace; the second addition is based on slagging effect, the addition amount is based on total amount of LF furnace, and lime is added in 100Kg per ton. Keeping the white slag for more than or equal to 30 minutes, maintaining strong reducing atmosphere, and continuously adding a deoxidizer (calcium powder), wherein the adding amount of the deoxidizer is 35Kg per ton according to the total amount of the current refining in the LF furnace; sampling, analyzing and controlling the components: according to the mass percentage, the content of C is 0.12 percent, the content of Si is 0.24 percent, the content of Mn is 1.10 percent, the content of Cr is 0.20 percent, the content of Mo is 0.43 percent, the content of Nb is 0.035 percent, the content of Cu is 0.55 percent, and the content of Ni is 1.20 percent; after alloy is added to adjust components, vacuumizing is carried out for more than or equal to 30 minutes; feeding Al wires and Ca wires in a furnace during tapping; feeding an Al wire to the mass percentage content of 0.040%; feeding Ca wire 5 meters per ton according to the total amount of the current refining in the LF furnace; deslagging by 70%;
a4, feeding into a VD furnace, adding 1kg of Si-Ba-Ca line per ton according to the total refining amount of the VD furnace, vacuumizing, wherein the ultimate vacuum pressure is less than or equal to 67Pa, and the time is more than or equal to 12 min; the temperature of the hoisting ladle is 1588 ℃;
a5, pouring, after the weak argon blowing is finished, according to the total refining amount of a VD furnace, adding 1 kg/ton of covering agent into a steel ladle and 1 kg/ton of carbonized rice hulls, pouring under the protection of argon, and pouring a ingot body: completion in 8 minutes; pouring by a riser: the filling was completed in 5 minutes; the pouring temperature is 1583 ℃; obtaining a steel ingot;
(2) forging
B1, heating the steel ingot obtained in the step (1) in two sections through a gas heating furnace, wherein the temperature of the first section is less than or equal to 650 ℃, and preserving heat at the temperature for 0.7 minute per millimeter according to the maximum thickness of the steel ingot; the second section is 1200, the temperature is kept at the temperature, the heat preservation time is 0.7 minute per millimeter according to the maximum thickness of the steel ingot, and the first procedure is pressing a jaw after the heat preservation is finished; then returning to the furnace and heating to 1200 ℃, preserving heat at the temperature for 0.7 min per millimeter according to the maximum thickness of the steel ingot, and then carrying out a second procedure: upsetting and drawing to a required size;
b2, forging, wherein the forging ratio is more than or equal to 5, the initial forging temperature is 1200 +/-20 ℃, the final forging temperature is more than or equal to 850 ℃, the air cooling temperature after forging is more than or equal to 500 ℃, and after forging, placing the forged blank into a furnace for pretreatment after normalizing and tempering forging to obtain a connected forged piece;
(3) roughing
Sawing the conjoined forged piece obtained in the step (2) into a single valve body forged piece;
(4) quenching and tempering heat treatment
D1, quenching, namely putting the valve body forged piece roughly processed in the step (3) into a heat treatment furnace, heating to 920 ℃ at a heating rate of 220 ℃/h, preserving heat at the temperature for 3 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then cooling with water until the temperature is less than or equal to 100 ℃;
d2, tempering, namely, putting the valve body forged piece processed in the step D1 into a heat treatment furnace, heating to 650 ℃ at a heating rate of 220 ℃/h, preserving heat at the temperature for 3 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then air cooling to room temperature to obtain a valve body forged piece finished product.
Example 2:
a nuclear power SA182F36 valve body forging comprises the following chemical elements in percentage by weight:
0.1 percent of C, 0.5 percent of Si, 0.8 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1 percent of Ni, less than or equal to 0.02 percent of V, 0.5 percent of Mo, less than or equal to 0.02 percent of N, 0.015 percent of Nb, less than or equal to 0.05 percent of Al, 0.8 percent of Cu and the balance of Fe.
The preparation method comprises the following steps:
(1) smelting
The method comprises the following steps of proportioning and smelting according to the weight percentage of the chemical elements to obtain a steel ingot, and specifically comprises the following steps:
a1, mixing according to the weight percentage of chemical elements; the ingredients comprise ferroalloy, and the ferroalloy is subjected to high-temperature baking pretreatment after the ingredients are mixed, wherein the pretreatment is to put the ferroalloy into a baking furnace to be heated to 750 ℃, and keep the temperature at 780 ℃ for 6 hours;
a2, entering an electric furnace, adding all ingredients in the step A1 into the electric furnace for smelting, sampling when the temperature of melting and cleaning is more than or equal to 1560 ℃, and entering an oxidation period when the decarburization quantity is more than or equal to 0.20%; the oxidation method adopted in the oxidation period is as follows: the oxidation temperature is more than or equal to 1560 ℃, oxygen blowing and decarburization are carried out, the decarburization quantity is more than or equal to 0.20 percent, the final carbon content is controlled to be 0.05 percent, the P content is less than or equal to 0.005 percent, and after slagging-off and tapping, the oxidizing slag is completely removed from the steel ladle again;
a3, feeding into an LF furnace, and adding 400Kg of lime, 150Kg of cap slag and 100Kg of deoxidizer (calcium powder) per ton according to the total amount of the LF furnace in the refining process; adding lime twice, wherein the adding amount of lime for the first time is 300Kg per ton according to the total refining amount of the LF furnace after the lime enters the LF furnace; the second addition is based on slagging effect, the addition amount is based on total amount of LF furnace, and lime is added in 100Kg per ton. Keeping the white slag for more than or equal to 30 minutes, maintaining a strong reducing atmosphere, and continuously adding a deoxidizer (calcium powder), wherein the adding amount of the deoxidizer is 20Kg per ton according to the total amount of the current refining in the LF furnace; sampling, analyzing and controlling the components: according to the mass percentage, the content of C is 0.12 percent, the content of Si is 0.24 percent, the content of Mn is 1.10 percent, the content of Cr is 0.20 percent, the content of Mo is 0.43 percent, the content of Nb is 0.035 percent, the content of Cu is 0.55 percent, and the content of Ni is 1.20 percent; after alloy is added to adjust components, vacuumizing is carried out for more than or equal to 30 minutes; feeding Al wire and Ca wire in the furnace during tapping; feeding Al wire to the mass percentage content of 0.040%; feeding Ca wire 5 meters per ton according to the total amount of the current refining in the LF furnace; deslagging by 65%;
a4, feeding into a VD furnace, adding 1kg of Si-Ba-Ca line per ton according to the total refining amount of the VD furnace, vacuumizing, wherein the ultimate vacuum pressure is less than or equal to 67Pa, and the time is more than or equal to 12 min; the temperature of the crane ladle is 1585 ℃;
a5, pouring, after the weak argon blowing is finished, according to the total refining amount of a VD furnace, adding 1 kg/ton of covering agent into a steel ladle and 1 kg/ton of carbonized rice hulls, pouring under the protection of argon, and pouring a ingot body: completion in 7 minutes; pouring a riser: the filling was completed in 4 minutes; the pouring temperature is 1585 ℃; obtaining a steel ingot;
(2) forging
B1, heating the steel ingot obtained in the step (1) in two sections through a gas heating furnace, wherein the temperature of the first section is less than or equal to 650 ℃, and preserving heat at the temperature for 0.8 minute per millimeter according to the maximum thickness of the steel ingot; the second section is 1180 ℃, the temperature is kept at the temperature, the heat preservation time is 0.8 minute per millimeter according to the maximum thickness of the steel ingot, and the first procedure is a pressing jaw after the heat preservation is finished; then returning to the furnace and heating to 1180 ℃, preserving heat at the temperature for 0.8 min per millimeter according to the maximum thickness of the steel ingot, and then performing a second step: upsetting and drawing to a required size;
b2, forging, wherein the forging ratio is more than or equal to 5, the initial forging temperature is 1200 +/-20 ℃, the final forging temperature is more than or equal to 850 ℃, the air cooling temperature after forging is more than or equal to 500 ℃, and after forging, placing the forged blank into a furnace for pretreatment after normalizing and tempering forging to obtain a connected forged piece;
(3) roughing
Sawing the conjoined forged piece obtained in the step (2) into a single valve body forged piece;
(4) thermal treatment for hardening and tempering
D1, quenching, namely putting the valve body forged piece roughly processed in the step (3) into a heat treatment furnace, heating to 910 ℃ at a heating rate of 180 ℃/h, preserving heat at the temperature for 3.1 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then cooling with water to a temperature of less than or equal to 100 ℃;
d2, tempering, namely, putting the valve body forged piece processed in the step D1 into a heat treatment furnace, heating to 640 ℃ at a heating rate of 180 ℃/h, preserving heat at the temperature for 3.1 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then air-cooling to room temperature to obtain a valve body forged piece finished product.
Example 3:
a nuclear power SA182F36 valve body forging comprises the following chemical elements in percentage by weight:
0.17 percent of C, 0.25 percent of Si, 1.2 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.3 percent of Ni, less than or equal to 0.02 percent of V, 0.25 percent of Mo, less than or equal to 0.02 percent of N, 0.045 percent of Nb, less than or equal to 0.05 percent of Al, 0.5 percent of Cu, and the balance of Fe.
The preparation method comprises the following steps:
(1) smelting of
The method comprises the following steps of proportioning and smelting according to the weight percentage of the chemical elements to obtain a steel ingot, and specifically comprises the following steps:
a1, mixing according to the weight percentage of chemical elements; the ingredients comprise ferroalloy, and the ferroalloy is subjected to high-temperature baking pretreatment after the ingredients are mixed, wherein the pretreatment is to put the ferroalloy into a baking furnace to be heated to 750 ℃, and keep the temperature at 730 ℃ for 8 hours;
a2, feeding the mixture into an electric furnace, adding all the ingredients in the step A1 into the electric furnace for smelting, sampling when the temperature of melting and cleaning is more than or equal to 1560 ℃, and feeding the mixture into an oxidation period when the decarburization amount is more than or equal to 0.20%; the oxidation method adopted in the oxidation period is as follows: the oxidation temperature is more than or equal to 1560 ℃, oxygen blowing and decarburization are carried out, the decarburization quantity is more than or equal to 0.20 percent, the final carbon content is controlled to be 0.05 percent, the P content is less than or equal to 0.005 percent, and after slagging-off and tapping, the oxidizing slag is completely removed from the steel ladle again;
a3, feeding into an LF furnace, and adding 400Kg of lime, 150Kg of cap slag and 100Kg of deoxidizer (calcium powder) per ton according to the total amount of the LF furnace in the refining process; adding lime twice, wherein the adding amount of lime for the first time is 300Kg per ton according to the total refining amount of the LF furnace after the lime enters the LF furnace; the second addition is based on slagging effect, the addition amount is based on total amount of LF furnace, and lime is added in 100Kg per ton. Keeping the white slag for more than or equal to 30 minutes, maintaining a strong reducing atmosphere, and continuously adding a deoxidizer (calcium powder), wherein the adding amount of the deoxidizer is 50Kg per ton according to the total amount of the current refining in the LF furnace; sampling, analyzing and controlling the components: according to the mass percentage, the content of C is 0.12 percent, the content of Si is 0.24 percent, the content of Mn is 1.10 percent, the content of Cr is 0.20 percent, the content of Mo is 0.43 percent, the content of Nb is 0.035 percent, the content of Cu is 0.55 percent, and the content of Ni is 1.20 percent; after alloy is added to adjust components, vacuumizing is carried out for more than or equal to 30 minutes; feeding Al wire and Ca wire in the furnace during tapping; feeding Al wire to the mass percentage content of 0.040%; feeding Ca wire 5 meters per ton according to the total amount of the current refining in the LF furnace; pouring 75% of slag;
a4, feeding into a VD furnace, adding 1kg of Si-Ba-Ca line per ton according to the total refining amount of the VD furnace, vacuumizing, wherein the ultimate vacuum pressure is less than or equal to 67Pa, and the time is more than or equal to 12 min; the temperature of the crane ladle is 1590 ℃;
a5, pouring, after weak argon blowing is finished, according to the total refining amount of a VD furnace, adding 1 kg/ton covering agent into a steel ladle, 1 kg/ton carbonized rice husk, pouring under the protection of argon, and pouring a ingot body: completion in 9 minutes; pouring a riser: the filling was completed in 6 minutes; the pouring temperature is 1580 ℃; obtaining a steel ingot;
(2) forging
B1, heating the steel ingot obtained in the step (1) by a gas heating furnace in two sections, wherein the temperature of the first section is less than or equal to 650 ℃, and preserving heat at the temperature for 0.6 minute per millimeter according to the maximum thickness of the steel ingot; the second section is 1220 ℃, the temperature is kept at the temperature, the heat preservation time is 0.6 minute per millimeter according to the maximum thickness of the steel ingot, and the first procedure is a pressing jaw after the heat preservation is finished; then the steel ingot is put back to be heated to 1220 ℃, and the temperature is kept at the temperature, the temperature is kept for 0.6 minute per millimeter according to the maximum thickness of the steel ingot, and then the second procedure is carried out: upsetting and drawing to a required size;
b2, forging, wherein the forging ratio is more than or equal to 5, the initial forging temperature is 1200 +/-20 ℃, the final forging temperature is more than or equal to 850 ℃, the air cooling temperature after forging is more than or equal to 500 ℃, and after forging, placing the forged blank into a furnace for pretreatment after normalizing and tempering forging to obtain a connected forged piece;
(3) roughing
Sawing the conjoined forged piece obtained in the step (2) into a single valve body forged piece;
(4) thermal treatment for hardening and tempering
D1, quenching, namely putting the valve body forged piece roughly machined in the step (3) into a heat treatment furnace, heating to 930 ℃ at a heating rate of 200 ℃/h, preserving heat at the temperature for 2.9 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then cooling with water to a temperature of less than or equal to 100 ℃;
d2, tempering, namely, putting the valve body forged piece processed in the step D1 into a heat treatment furnace, heating to 660 ℃ at a heating rate of 200 ℃/h, preserving heat at the temperature for 2.9 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then air-cooling to room temperature to obtain a valve body forged piece finished product.
Example 4:
this example differs from example 1 in that:
the weight percentages of the chemical elements are respectively as follows: 0.12 percent of C, 0.4 percent of Si, 0.9 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.1 percent of Ni, less than or equal to 0.02 percent of V, 0.45 percent of Mo, less than or equal to 0.02 percent of N, 0.025 percent of Nb, less than or equal to 0.05 percent of Al, 0.7 percent of Cu and the balance of Fe;
the rest is the same as example 1.
Example 5:
this example differs from example 1 in that:
the weight percentages of the chemical elements are respectively as follows: 0.15 percent of C, 0.3 percent of Si, 1.1 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.2 percent of Ni, less than or equal to 0.02 percent of V, 0.35 percent of Mo, less than or equal to 0.02 percent of N, 0.035 percent of Nb, less than or equal to 0.05 percent of Al, 0.6 percent of Cu and the balance of Fe;
the rest is the same as example 1.
Secondly, performance detection and performance test
1. The conjoined forgings obtained after the forging step in examples 1-3 were tested for non-metallic inclusions. The test results are shown in the following table 1 by adopting the ASTM E45-2018 standard:
TABLE 1 results of detection of non-metallic inclusions
Example 1 Example 2 Example 3 Index (I)
Class A (sulfide) fine system 0.5 0.5 0.5 Not more than 1.5 grade
Crude A type (sulfide type) Is not found Is not found Is not found Not more than 1.5 grade
Class B (oxide) subclasses 1.0 1.0 1.0 Not more than 1.5 grade
Coarse system of B-type (oxides type) 1.0 1.0 1.0 Not more than 1.5 grade
Class C (silicates) fine system No discovery Is not found 0.5 Not more than 1.5 grade
Coarse series of C (silicates) Is not found 0.5 0.5 Not more than 1.5 grade
Class D (cyclic oxide) subclasses 1.0 1.0 1.0 Not more than 1.5 grade
Coarse system of D (cyclic oxides) 0.5 0.5 0.5 Not more than 1.5 grade
2. The valve body forgings prepared in examples 1 to 3 were subjected to a simulated stress relief test.
The valve body forgings prepared in examples 1 to 3 were placed in a heat treatment furnace for heat treatment, three samples were prepared for each example after the heat treatment, and then mechanical properties and impact tests were examined.
The heat treatment method comprises the following steps:
a temperature rising section: the temperature rise speed is less than or equal to 220 ℃/h within the range of 400-590 ℃;
a heat preservation section: the temperature is 590 ℃ plus or minus 10 ℃, and the holding time is shown in the table 3.
A furnace cooling and temperature reducing section: the temperature is between 590 and 400 ℃, and the cooling speed is less than or equal to 220 ℃/h;
and cooling to room temperature, and performing mechanical property detection and impact test.
The mechanical property detection and the impact test both adopt the standard test method of ASTM A370-2015 steel product mechanical property test, and the detection results are shown in the following tables 2 and 3:
TABLE 2 mechanical properties of valve forgings after simulated stress relief test
Figure GDA0003550211580000111
TABLE 3 impact test results of valve forging after simulated stress relief test
Figure GDA0003550211580000112
As can be seen from tables 2 and 3, the nuclear power SA182F36 valve body forged piece prepared in embodiments 1 to 5 of the present invention can meet the requirements of the 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged piece, and after the simulated stress relief treatment, can also meet the requirements of the 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged piece; the simulated stress relief treatment in the experiment is actually simulated and relieved of welding stress, so that the mechanical property and the impact property of the SA182F36 valve body forged piece after welding in the using process can meet the requirements of 600MW demonstration fast reactor engineering nuclear grade SA182F36 valve body forged pieces.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims (5)

1. The utility model provides a nuclear power SA182F36 valve body forging which characterized in that: the material comprises the following chemical elements in percentage by weight: 0.1 to 0.17 percent of C, 0.25 to 0.5 percent of Si, 0.8 to 1.2 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1 to 1.3 percent of Ni, less than or equal to 0.02 percent of V, 0.25 to 0.5 percent of Mo, less than or equal to 0.02 percent of N, 0.015 to 0.045 percent of Nb, less than or equal to 0.05 percent of Al, 0.5 to 0.8 percent of Cu, and the balance of Fe;
the preparation method of the nuclear power SA182F36 valve body forging comprises the following steps:
(1) smelting
Proportioning and smelting according to the weight percentage of the chemical elements to obtain a steel ingot; the method comprises the following specific steps:
a1, mixing according to the weight percentage of chemical elements; the ingredients comprise ferroalloy, and the ferroalloy is subjected to high-temperature baking pretreatment after the ingredients are mixed; the pretreatment is to put the ferroalloy into a baking furnace to be heated to 750 ℃, and preserve heat for at least 6h at the temperature of 730-;
a2, entering an electric furnace, adding all ingredients in the step A1 into the electric furnace for smelting, sampling when the temperature of melting and cleaning is more than or equal to 1560 ℃, and entering an oxidation period when the decarburization quantity is more than or equal to 0.20%; the oxidation method adopted in the oxidation period is as follows: the oxidation temperature is more than or equal to 1560 ℃, oxygen blowing for decarburization is carried out, the decarburization amount is more than or equal to 0.20 percent, the final carbon content is controlled to be 0.05 percent, the P content is less than or equal to 0.005 percent, and after slagging-off and tapping, oxidizing slag is completely removed from a steel ladle again;
a3, feeding into an LF furnace, and adding 400Kg of lime, 150Kg of cap slag and 100Kg of deoxidizer per ton according to the total amount of the LF furnace in the refining process; adding lime twice, wherein the adding amount of lime for the first time is 300Kg per ton according to the total refining amount of the LF furnace after the lime enters the LF furnace; the second addition is based on the slagging effect, the addition amount is 100Kg of lime per ton according to the total amount of the current refining of the LF furnace; keeping the white slag for more than or equal to 30 minutes, maintaining a strong reducing atmosphere, and continuously supplementing a deoxidizing agent, wherein the addition amount of the deoxidizing agent is 20-50Kg per ton according to the total amount of the current refining in the LF furnace; sampling, analyzing and controlling the components: according to the mass percentage, the content of C is 0.12 percent, the content of Si is 0.24 percent, the content of Mn is 1.10 percent, the content of Cr is 0.20 percent, the content of Mo is 0.43 percent, the content of Nb is 0.035 percent, the content of Cu is 0.55 percent, and the content of Ni is 1.20 percent; after the components are adjusted, vacuumizing for more than or equal to 30 minutes; feeding Al wire and Ca wire in the furnace during tapping; feeding Al wire to the content of 0.040%; feeding Ca wire 5 meters per ton according to the total amount of the current refining in the LF furnace; deslagging by 65-75%;
a4, feeding into a VD furnace, adding 1kg of Si-Ba-Ca line per ton according to the total refining amount of the VD furnace, vacuumizing, wherein the ultimate vacuum pressure is less than or equal to 67Pa, and the time is more than or equal to 12 min; the temperature of the hoisting ladle is 1585-1590 ℃;
a5, pouring, after weak argon blowing is finished, according to the total refining amount of a VD furnace, adding 1 kg/ton covering agent into a steel ladle, 1 kg/ton carbonized rice husk, pouring under the protection of argon, and pouring a ingot body: finishing within 7 minutes to 9 minutes; pouring a riser: completing the filling within 4-6 minutes; the pouring temperature is 1580-1585 ℃; obtaining a steel ingot;
(2) forging
B1, heating the steel ingot obtained in the step (1) in two sections through a gas heating furnace, wherein the temperature of the first section is less than or equal to 650 ℃, and preserving heat at the temperature for 0.6-0.8 minute according to the maximum thickness of the steel ingot per millimeter; the second section is 1200 plus or minus 20 ℃, the temperature is kept at the temperature, the heat preservation time is 0.6 to 0.8 minute per millimeter according to the maximum thickness of the steel ingot, and the first procedure is a pressing jaw after the heat preservation is finished; then returning to the furnace and heating to 1200 +/-20 ℃, preserving heat at the temperature for 0.6-0.8 min per millimeter according to the maximum thickness of the steel ingot, and then carrying out the second step: upsetting and drawing to a required size;
b2, forging, wherein the forging ratio is more than or equal to 5, the initial forging temperature is 1200 +/-20 ℃, the final forging temperature is more than or equal to 850 ℃, the air cooling temperature after forging is more than or equal to 500 ℃, and after forging, placing the forged blank into a furnace for pretreatment after normalizing and tempering forging to obtain a connected forged piece;
(3) roughing
Sawing the conjoined forged piece obtained in the step (2) into a single valve body forged piece;
(4) thermal treatment for hardening and tempering
D1, quenching, namely putting the valve body forged piece roughly processed in the step (3) into a heat treatment furnace, heating to 920 +/-10 ℃ at a heating rate of less than or equal to 220 ℃/h, preserving heat at the temperature for 2.9-3.1 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then cooling with water to a temperature of less than or equal to 100 ℃;
d2, tempering, heating the valve body forged piece processed in the step D1 in a heat treatment furnace at a heating rate of less than or equal to 220 ℃/h to 650 +/-10 ℃, preserving heat at the temperature for 2.9-3.1 minutes per millimeter according to the maximum thickness of the valve body forged piece, and then air-cooling to room temperature to obtain a valve body forged piece finished product.
2. The nuclear power SA182F36 valve body forging of claim 1, wherein: the weight percentages of the chemical elements are respectively as follows: 0.12 to 0.15 percent of C, 0.3 to 0.4 percent of Si, 0.9 to 1.1 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.1 to 1.2 percent of Ni, less than or equal to 0.02 percent of V, 0.35 to 0.45 percent of Mo, less than or equal to 0.02 percent of N, 0.025 to 0.035 percent of Nb, less than or equal to 0.05 percent of Al, 0.6 to 0.7 percent of Cu, and the balance of Fe.
3. The nuclear power SA182F36 valve body forging of claim 1 or 2, wherein: the weight percentages of the chemical elements are respectively as follows: 0.12 percent of C, 0.35 percent of Si, 1 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.2 percent of Ni, less than or equal to 0.02 percent of V, 0.4 percent of Mo, less than or equal to 0.02 percent of N, 0.03 percent of Nb, less than or equal to 0.05 percent of Al, 0.6 percent of Cu and the balance of Fe.
4. The nuclear power SA182F36 valve body forging of claim 1, wherein: the weight percentages of the chemical elements are respectively as follows: 0.1 percent of C, 0.5 percent of Si, 0.8 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1 percent of Ni, less than or equal to 0.02 percent of V, 0.5 percent of Mo, less than or equal to 0.02 percent of N, 0.015 percent of Nb, less than or equal to 0.05 percent of Al, 0.8 percent of Cu and the balance of Fe.
5. The nuclear power SA182F36 valve body forging of claim 1, wherein: the weight percentages of the chemical elements are respectively as follows: 0.17 percent of C, 0.25 percent of Si, 1.2 percent of Mn, less than or equal to 0.025 percent of S, less than or equal to 0.03 percent of P, less than or equal to 0.3 percent of Cr, 1.3 percent of Ni, less than or equal to 0.02 percent of V, 0.25 percent of Mo, less than or equal to 0.02 percent of N, 0.045 percent of Nb, less than or equal to 0.05 percent of Al, 0.5 percent of Cu, and the balance of Fe.
CN202110163672.4A 2021-02-05 2021-02-05 Nuclear power SA182F36 valve body forging Active CN112941415B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110163672.4A CN112941415B (en) 2021-02-05 2021-02-05 Nuclear power SA182F36 valve body forging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110163672.4A CN112941415B (en) 2021-02-05 2021-02-05 Nuclear power SA182F36 valve body forging

Publications (2)

Publication Number Publication Date
CN112941415A CN112941415A (en) 2021-06-11
CN112941415B true CN112941415B (en) 2022-06-03

Family

ID=76242841

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110163672.4A Active CN112941415B (en) 2021-02-05 2021-02-05 Nuclear power SA182F36 valve body forging

Country Status (1)

Country Link
CN (1) CN112941415B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114182078A (en) * 2021-12-03 2022-03-15 上海电气上重铸锻有限公司 Preparation method of high-strength austenite shaft heavy forging
CN115537654A (en) * 2022-09-13 2022-12-30 舞阳钢铁有限责任公司 15NiCuMoNb5-6-4 steel plate and production method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005120397A (en) * 2003-10-14 2005-05-12 Kobe Steel Ltd High strength forged parts with excellent drawability
CN101333579B (en) * 2008-08-06 2010-12-01 攀钢集团成都钢铁有限责任公司 Method for producing tube blank steel for nuclear electricity
CN103924161A (en) * 2014-04-21 2014-07-16 中广核工程有限公司 Main steam and main water supply pipeline in a conventional island of nuclear power plants and preparation method thereof
CN108277435A (en) * 2018-03-21 2018-07-13 包头钢铁（集团）有限责任公司 A kind of anti-corrosion pressure-bearing seamless steel pipe and its production method
CN109622836B (en) * 2018-12-05 2020-04-21 无锡继平锻造有限公司 Forging and heat treatment process of shell forging

Also Published As

Publication number Publication date
CN112941415A (en) 2021-06-11

Similar Documents

Publication Publication Date Title
CN101328522B (en) Smelting production method of low activation martensitic steel for fusion reactor
CN107299278B (en) A kind of resistance to ultralow temperature impact wind-powered electricity generation high-strength bolt steel making method
CN112941415B (en) Nuclear power SA182F36 valve body forging
CN109897938B (en) Production of Cr13Electric furnace for series stainless steel and refining furnace smelting control method
CN105839028B (en) Austenite heat-resistance Valve Steel manufacture method
CN103350202A (en) Method for manufacturing high-quality SCr420 HB automobile gear steel
CN102108468B (en) Steel for railway locomotive axles and manufacturing method thereof
CN106480253A (en) A kind of supercritical turbine preparation method of valve forging and valve forging
CN102260835B (en) Nuclear power steel 18MnNiMo and its preparation method
CN103320718A (en) Method for producing austenitic stainless steel for 316 LN nuclear power
CN114438394B (en) Production process of pre-hardened high-polishing plastic mold steel
CN108531815A (en) High temperature bolt steel BG25Cr2MoVA and preparation method thereof
CN112981216A (en) Preparation method of nuclear power SA182F36 valve body forging
CN112962027B (en) Optimized machining method of alloy structural steel
CN108193135B (en) Low-carbon high-strength austenitic heat-resistant steel and preparation method thereof
CN110218954B (en) Preparation method of 4Cr13V plastic die steel
CN109055859A (en) A kind of industrial robot joint flexbile gear high intensity RL40 steel and preparation method
CN110218955B (en) Preparation method for preventing generation of delta ferrite by SA182F92
CN114959456B (en) Nuclear power SA182F91 valve body and preparation method thereof
CN102965589A (en) Mechanical expanding machine pull rod shaft with high fatigue strength and preparation method thereof
CN113846263B (en) High-toughness heat-resistant steel without delta ferrite and preparation method thereof
CN113136526B (en) Steel 35CrNiMo for large-specification steel pull rod for bridge and production method thereof
CN115029623A (en) Smelting and forging heat treatment process method of 12Cr2Mo1 steel for pressure container
CN102383025B (en) Preparation method of super-critical high alloy steel suitable for thermal power unit
CN115627419B (en) High-strength high-toughness Cr8 cold-work die steel and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant