CN115595506B - High-quality low-alloy high-strength plate steel forging and preparation method thereof - Google Patents

High-quality low-alloy high-strength plate steel forging and preparation method thereof Download PDF

Info

Publication number
CN115595506B
CN115595506B CN202211356713.2A CN202211356713A CN115595506B CN 115595506 B CN115595506 B CN 115595506B CN 202211356713 A CN202211356713 A CN 202211356713A CN 115595506 B CN115595506 B CN 115595506B
Authority
CN
China
Prior art keywords
equal
forging
less
plate
upsetting
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
CN202211356713.2A
Other languages
Chinese (zh)
Other versions
CN115595506A (en
Inventor
尚贺军
臧超
张鑫
王政通
刘嘉震
刘蕾
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.)
Elite Energy Equipment Co ltd
Original Assignee
Elite Energy Equipment 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 Elite Energy Equipment Co ltd filed Critical Elite Energy Equipment Co ltd
Priority to CN202211356713.2A priority Critical patent/CN115595506B/en
Publication of CN115595506A publication Critical patent/CN115595506A/en
Application granted granted Critical
Publication of CN115595506B publication Critical patent/CN115595506B/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • 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
    • C22C38/04—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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—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
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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)
  • Mechanical Engineering (AREA)
  • Materials 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 relates to a manufacturing method of a high-quality low-alloy high-strength plate steel forging, and belongs to the technical field of plate forging processing. The plate forging material adopted by the invention mainly comprises the following components: 0.10-0.16 wt% of C, 0.20-0.50 wt% of Si, 1.20-1.60 wt% of Mn, less than or equal to 0.30wt% of Cr, less than or equal to 0.08wt% of Mo, less than or equal to 0.50wt% of Ni, less than or equal to 0.015wt% of P, less than or equal to 0.008wt% of S, less than or equal to 0.05wt% of Cu, less than or equal to 0.008wt% of Ti, 0.01-0.05 wt% of V, 0.020-0.040 wt% of Nb, 0.020-0.040 wt% of Al, less than or equal to 0.0080wt% of N, less than or equal to 20ppm wt% of [ O ] and less than or equal to 2ppm wt% of [ H ]. The material blank is formed by a specific forging method and then subjected to specific heat treatment, so that the quality of the prepared product is better ensured, the service life is long, and the use of at least 20 years can be ensured; and the mechanical properties of the longitudinal, transverse and axial directions are excellent: the yield strength in each direction is more than 370MPa, the tensile strength in each direction is more than 520MPa, and the low-temperature impact absorption power in each direction at-50 ℃ is more than 90J.

Description

High-quality low-alloy high-strength plate steel forging and preparation method thereof
Technical Field
The invention belongs to the technical field of forging processing, and particularly relates to a high-quality low-alloy high-strength plate steel forging material and a processing method of the forging material.
Background
In engineering construction such as ocean engineering, wind power generation and the like, part of components are influenced by environmental factors and need to bear multidirectional stress in the service process. The existing low-alloy high-strength plate steel forgings can not meet the stress requirements in ocean engineering, and the performance of the existing low-alloy high-strength plate steel forgings is required to be improved; therefore, based on actual demands, development of a plate steel forging piece capable of having multidirectional stress with high mechanical level in the longitudinal direction, the transverse direction and the axial direction is urgently needed; unlike steel components in unidirectional stress states, components in multidirectional stress states are subject to fracture as a primary failure mode.
The forging needs to be manufactured by a special manufacturing method so as to meet the requirement of multidirectional mechanical properties.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-quality low-alloy high-strength plate steel forging and a preparation method thereof, which ensure that the prepared plate forging is excellent in longitudinal, transverse and axial mechanical properties and has better multidirectional mechanical property level, and the longitudinal direction can reach Re (MPa) 373, rm (MPa) 534 and A (%) 28.0 and Kv (J) 115.7/124.7/116.9 at-50 ℃. The transverse direction can reach Re (MPa) 372, rm (MPa) 537, A (%) 34.5, kv (J) 99.3/79.0/90.6 at-50 ℃, the safety is high, the service life is long, the use of at least 20 years can be ensured, and the expectation is met.
The invention provides a high-quality low-alloy high-strength plate steel forging, which comprises the following raw materials in percentage by weight:
0.10 to 0.16 weight percent of C, 0.20 to 0.50 weight percent of Si, 1.20 to 1.60 weight percent of Mn, less than or equal to 0.30 weight percent of Cr, less than or equal to 0.08 weight percent of Mo, less than or equal to 0.50 weight percent of Ni, less than or equal to 0.015 weight percent of P, less than or equal to 0.008 weight percent of S, less than or equal to 0.05 weight percent of Cu, less than or equal to 0.008 weight percent of Ti, 0.01 to 0.05 weight percent of V, 0.020 to 0.040 weight percent of Nb, 0.020 to 0.040 weight percent of Al, less than or equal to 0.0080 weight percent of N, less than or equal to 20ppm weight percent of [ O ], [ H ] < 2ppm weight percent, and the balance of Fe and other residual elements.
Wherein, the content of carbon (C) is controlled within the range of 0.10-0.16%, and the content of manganese (Mn) is controlled within the range of 1.20-1.60%, so as to ensure that the plate forging has enough strength after heat treatment; the control of the niobium (Nb) content in the range of 0.020-0.040%, the vanadium (V) content in the range of 0.01-0.05% and the control of the aluminum (Al) content as deoxidizing element in the range of 0.015-0.040% all have important functions of refining grains and are important in ensuring the comprehensive mechanical properties, particularly the low-temperature impact properties, of the plate forging; copper (Cu) is an element unfavorable for thermal deformation, and the residual content thereof needs to be strictly controlled; titanium (Ti) generally exists in the form of carbide (nitride) in steel, is in the form of a block with sharp corners, is easy to become a source of fatigue cracks, and needs to be controlled below 0.008%; excessive gas ([ O ] and [ H ]) can lead to an increased probability of white spots and microcracks occurring in the forging, requiring degassing (VD) treatment during refining.
The invention also provides a preparation method of the high-quality low-alloy high-strength plate steel forging, which comprises the following steps: forging forming and heat treatment.
The specific steps of the forging forming are as follows: and blanking the raw materials containing the components, wherein the raw materials are square blanks prepared by cogging steel ingots or round billets, marking three adjacent surfaces of the square blanks as an A surface, a B surface and a C surface, heating the square blanks, upsetting 6 times, and sequentially adopting the steps of C surface upsetting, A surface upsetting, B surface upsetting, C surface upsetting, A surface upsetting and B surface upsetting according to the sequence, and shaping to the size of a forging piece to finish forging forming. When upsetting is performed, the single upsetting ratio of the 2 nd, 4 th and 6 th upsetting is controlled to be more than or equal to 2:1, and the total upsetting ratio of the 2 nd, 4 th and 6 th upsets is greater than or equal to 6:1.
the specific steps of the heat treatment are as follows: sequentially carrying out (a) normalizing treatment on the plate forgings formed by forging; (b) quenching treatment; (c) tempering; and (d) sampling and detecting mechanical properties.
The specific steps of the normalizing treatment of (a) are as follows:
(a1) Placing the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the forgings more than or equal to 50mm, heating to 900-940 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation according to the plate thickness T and the speed of 30-55 mm/h for 4-6 h;
(a2) And after the heat preservation is finished, discharging from the furnace, and performing air cooling.
Wherein the specific steps of the quenching treatment of (b) are as follows:
(b1) Placing the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the forgings more than or equal to 50mm, heating to 900-930 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation according to the plate thickness T and 40-60 mm/h for 4-6 h;
(b2) Discharging from the furnace after heat preservation is finished, and quenching is implemented;
(b3) Quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20-40 ℃, and the medium is kept in a stable forced convection state during cooling.
Wherein, the specific steps of the tempering treatment of (c) are as follows:
(c1) Placing the plate forging into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between every two parts more than or equal to 50mm, heating to 600-650 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation according to the plate thickness T and the speed of 25-40 mm/h for 4-6 h;
(c2) And after the heat preservation is finished, discharging and air cooling.
Further, sampling the calcined piece subjected to tempering treatment after the calcined piece is cooled to below 40 ℃ for mechanical property detection; the specific steps of the mechanical property detection are as follows:
(d1) Sawing test blocks at the position, which is not less than T/4, of the end surface of the lengthening end of the plate forging;
(d2) Sequentially taking samples of longitudinal stretching, longitudinal impact, transverse stretching, transverse impact and axial impact from the intercepted samples;
(d3) Processing a tensile sample according to GB/T228.1, and detecting the longitudinal and transverse tensile properties at room temperature;
(d4) The impact test pieces were processed according to GB/T229, notched in a V-shape, and tested for impact properties at-50℃in the longitudinal, transverse and axial directions.
The invention has the beneficial effects that:
(1) The invention firstly improves and adjusts the raw materials for manufacturing the plate forging, for example, controls the content of carbon and manganese so as to ensure that the plate forging has enough strength after heat treatment; meanwhile, the contents of vanadium, niobium and aluminum are controlled within a reasonable range so as to ensure the comprehensive mechanical property level of the plate forging, in particular the low-temperature impact property, and the longitudinal, transverse and axial Kv (J) at-50 ℃ can respectively reach 115.7/124.7/116.9, 82.1/102.5/133.6 and 99.3/79.0/90.6; by adopting the heat treatment method, the plate forging can be ensured to obtain enough strength and toughness;
(2) By adopting the specific process, the raw materials are forged by a multidirectional forging method, so that the compactness of the internal structure of the plate forging can be effectively ensured, and the realization of multidirectional mechanical properties of the plate forging after heat treatment is facilitated; the yield strength in each direction is more than 370MPa, the tensile strength in each direction is more than 520MPa, and the low-temperature impact absorption power in each direction at-50 ℃ is more than 90J, compared with the prior art, the comprehensive mechanical property in each direction is more excellent; and can also ensure the use for at least 20 years, achieve the purpose of long service life and meet the expectations.
Drawings
FIG. 1 is a square blank size diagram;
FIG. 2 is a plate forging size diagram.
Detailed Description
The present invention will now be further described in connection with specific embodiments in order to enable those skilled in the art to better understand the invention.
Example 1
The embodiment provides a plate forging with the size of 1200mm multiplied by 400mm multiplied by 105mm and a manufacturing method thereof; the preparation method comprises the following steps:
(1) Carrying out process design according to the size, shape and weight of the product;
(2) According to the design scheme, the raw materials of the continuous casting round billet with the diameter of phi 800mm are selected for repeated inspection, and the chemical components of the raw materials are as follows (wt%): c0.16, si0.23, mn1.25, cr0.15, mo0.039, ni0.10, P0.008, S0.004, ti0.003, cu0.050, V0.05, nb0.036, al0.022, N0.0045, [ O ] =15 ppm, [ H ] =0.8 ppm, the remainder being Fe and other residual elements;
(3) Forging and forming
The method comprises the steps of blanking by adopting the phi 800mm raw material to obtain a ring piece with the outer diameter phi 2100mm, the inner diameter phi 1300mm and the height 280mm, equally dividing and cutting the ring piece into square blanks with the cross sections of 480 multiplied by 280, marking three adjacent faces of the square blanks as A faces, B faces and C faces, heating the square blanks, sequentially adopting C face upsetting, A face upsetting, B face upsetting, C face upsetting, A face upsetting and B face upsetting, shaping to the size of a forging piece, completing forging and forming, and controlling the single upsetting ratio of the 2 nd, 4 th and 6 th upsetting to be more than or equal to 2:1, and the total upsetting ratio of the 2 nd, 4 th and 6 th upsets is greater than or equal to 6:1, completing forging forming, specifically, the present embodiment controls the single upsetting ratio of the 2 nd, 4 th and 6 th upsetting to 2.03:1, a total upset ratio of 6.09:1, a step of;
the upsetting ratio is the pre-upsetting height divided by the post-upsetting height (same applies below);
(4) Heat treatment of
a, firstly, normalizing:
a1, loading a plate forging into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between every two parts more than or equal to 50mm, heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the thickness T and the speed of 30 mm/h;
a2, discharging from the furnace after the heat preservation is finished, and performing air cooling;
b, quenching treatment;
and carrying out integral quenching treatment on the normalized plate forging, wherein the method specifically comprises the following steps of:
b1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, rapidly heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and 40 mm/h;
b2, discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3, quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c tempering treatment;
the whole tempering treatment is carried out on the quenched plate forging, and the specific steps comprise:
c1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 600 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and 40 mm/h;
c2, discharging from the furnace for air cooling after heat preservation is finished;
d, sampling and detecting mechanical properties;
and (3) carrying out sampling detection on the forge piece after tempering treatment after the forge piece is air-cooled to 20 ℃, wherein the specific steps are as follows:
d1 sawing test blocks from the lengthened end of the plate forging at a position which is not less than T/4 from the end surface;
d2, sequentially taking a longitudinal stretching sample, a longitudinal impact sample, a transverse stretching sample and an axial impact sample from the intercepted sample;
d3, processing a tensile sample according to GB/T228.1, and detecting the room-temperature longitudinal tensile property and the transverse tensile property of the tensile sample;
d4 impact test pieces were processed according to GB/T229, notched in a V-shape, and tested for impact properties at-50℃in the machine, transverse and machine directions, and the results are shown in Table 1.
Example 2
(1) As in example 1;
(2) According to the design scheme, the raw materials of the continuous casting round billet with the diameter of phi 800mm are selected for repeated inspection, and the chemical components of the raw materials are as follows (wt%): c0.11, si0.3, mn1.3, cr0.15, mo0.039, ni0.10, P0.01, S0.004, ti0.005, cu0.050, V0.05, nb0.036, al0.022, N0.0045, [ O ] =13 ppm, [ H ] =1 ppm, the remainder being Fe and other residual elements;
(3) The present embodiment controls the single upsetting ratio of the 2 nd, 4 th and 6 th upsets to be 2:1, a total upsetting ratio of 6:1, the remainder being the same as in example 1;
(4) Heat treatment of
a, firstly, normalizing:
a1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 930 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and the speed of 50 mm/h;
a2, discharging from the furnace after the heat preservation is finished, and performing air cooling;
b, quenching treatment;
and carrying out integral quenching treatment on the normalized plate forging, wherein the method specifically comprises the following steps of:
b1, loading the plate forging into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the parts more than or equal to 50mm, rapidly heating to 920 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and the speed of 55 mm/h;
b2, discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3, quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c tempering treatment;
the whole tempering treatment is carried out on the quenched plate forging, and the specific steps comprise:
c1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 650 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and the speed of 25 mm/h;
c2, discharging from the furnace for air cooling after heat preservation is finished;
d, sampling and detecting mechanical properties;
for the tempered calcined piece, sampling detection was performed after air cooling to 17 ℃, and the specific procedure was the same as in example 1.
Example 3
(1) As in example 1;
(2) According to the design scheme, the raw materials of the continuous casting round billet with the diameter of phi 800mm are selected for repeated inspection, and the chemical components of the raw materials are as follows (wt%): c0.16, si0.3, mn1.26, cr0.15, mo0.039, ni0.10, P0.01, S0.004, ti0.005, cu0.050, V0.05, nb0.036, al0.022, N0.0055, [ O ] =17 ppm, [ H ] =1 ppm, the remainder being Fe and other residual elements;
(3) The present embodiment controls the single upsetting ratio of the 2 nd, 4 th and 6 th upsets to be 2.1:1, a total upsetting ratio of 6.05:1, the remainder being the same as in example 1;
(4) Heat treatment of
a, firstly, normalizing:
a1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 910 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and 40 mm/h;
a2, discharging from the furnace after the heat preservation is finished, and performing air cooling;
b, quenching treatment;
and carrying out integral quenching treatment on the normalized plate forging, wherein the method specifically comprises the following steps of:
b1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, rapidly heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the thickness T and the speed of 45 mm/h;
b2, discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3, quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c tempering treatment;
the whole tempering treatment is carried out on the quenched plate forging, and the specific steps comprise:
c1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 620 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and 60 mm/h;
and c2, discharging and air cooling after the heat preservation is finished.
d, sampling and detecting mechanical properties;
for the tempered calcined piece, sampling detection was performed after air cooling to 17 ℃, and the specific procedure was the same as in example 1.
Example 4
(1) As in example 1;
(2) According to the design scheme, the raw materials of the continuous casting round billet with the diameter of phi 800mm are selected for repeated inspection, and the chemical components of the raw materials are as follows (wt%): c0.16, si0.4, mn1.26, cr0.15, mo0.039, ni0.10, P0.005, S0.004, ti0.005, cu0.050, V0.05, nb0.036, al0.022, N0.005, [ O ] = 14ppm, [ H ] = 0.9ppm, the remainder being Fe and other residual elements;
(3) The present embodiment controls the single upsetting ratio of the 2 nd, 4 th and 6 th upsets to be 2.2:1, a total upsetting ratio of 6.07:1, the remainder being the same as in example 1;
(4) Heat treatment of
a, firstly, normalizing:
a1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 910 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and 40 mm/h;
a2, discharging from the furnace after the heat preservation is finished, and performing air cooling;
b, quenching treatment;
and carrying out integral quenching treatment on the normalized plate forging, wherein the method specifically comprises the following steps of:
b1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, rapidly heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the thickness T and the speed of 45 mm/h;
b2, discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3, quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c tempering treatment;
the whole tempering treatment is carried out on the quenched plate forging, and the specific steps comprise:
c1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 620 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and 60 mm/h;
c2, discharging from the furnace for air cooling after heat preservation is finished;
d, sampling and detecting mechanical properties;
for the tempered calcined piece, sampling detection was performed after air cooling to 20 ℃, and the specific procedure was the same as in example 1.
Comparative example 1
This comparative example provides a plate forging of 1200mm x 400mm x 105mm in size, prepared specifically as follows:
(1) Carrying out process design according to the size, shape and weight of the product;
(2) According to the design scheme, the raw materials of the continuous casting round billet with the diameter of phi 800mm are selected for repeated inspection, and the chemical components of the raw materials are as follows (wt%): c0.14, si0.23, mn1.25, cr0.15, mo0.039, ni0.10, P0.008, S0.004, ti0.003, cu0.050, V0.05, nb0.036, al0.022, N0.0045, [ O ] =15 ppm, [ H ] =0.8 ppm, the remainder being Fe and other residual elements;
(3) Forging and forming
Blanking the phi 800mm raw material to obtain a ring piece with the outer diameter phi 2100mm, the inner diameter phi 1300mm and the height 280mm, equally dividing the ring piece into 7 square blank pieces with the cross sections 480 multiplied by 280, shaping the blank along the surface A and the surface C to obtain a square blank which is ≡350 multiplied by 650, upsetting and drawing the blank along the surface B for one time, upsetting the blank with the upsetting ratio of 2.04, and shaping the blank along the surface A and the surface C to obtain the plate forging;
(4) Heat treatment of
a, firstly, normalizing:
a1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 910 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and 40 mm/h;
a2, discharging from the furnace after the heat preservation is finished, and performing air cooling;
b, quenching treatment;
and carrying out integral quenching treatment on the normalized plate forging, wherein the method specifically comprises the following steps of:
b1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, rapidly heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the thickness T and the speed of 45 mm/h;
b2, discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3, quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c tempering treatment;
the whole tempering treatment is carried out on the quenched plate forging, and the specific steps comprise:
c1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 620 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and 60 mm/h;
c2, discharging from the furnace for air cooling after heat preservation is finished;
d, sampling and detecting mechanical properties;
for the tempered calcined piece, sampling detection was performed after air cooling to 20 ℃, and the specific procedure was the same as in example 1.
This comparative example is technically different from the examples of the present invention in that: upsetting is performed only once along the B face of the billet.
Comparative example 2
The embodiment provides a ring rolling machine plate forging with the dimensions of 1200mm multiplied by 400mm multiplied by 105mm, and the specific preparation method is as follows:
(1) Carrying out process design according to the size, shape and weight of the product;
(2) According to the design scheme, the raw materials of the continuous casting round billet with the diameter of phi 800mm are selected for repeated inspection, and the chemical components of the raw materials are as follows (wt%): c0.14, si0.23, mn1.25, cr0.15, mo0.039, ni0.10, P0.008, S0.004, ti0.003, cu0.050, V0.05, nb0.036, al0.022, N0.0045, [ O ] =15 ppm, [ H ] =0.8 ppm, the remainder being Fe and other residual elements;
(3) Forging and forming
Blanking the phi 800mm raw material to obtain a ring piece with the outer diameter phi 2100mm, the inner diameter phi 1300mm and the height 280mm, equally dividing the ring piece into 7 square blank pieces with the cross sections 480 multiplied by 280, shaping the blank along the surface A and the surface C to obtain a square blank which is ≡350 multiplied by 650, upsetting and drawing the blank twice along the surface B, upsetting the blank with the upsetting ratio of 2.10, and shaping the blank along the surface A and the surface C to obtain the plate forging;
(4) Heat treatment of
a, firstly, normalizing:
a1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 910 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and 40 mm/h;
a2, discharging from the furnace after the heat preservation is finished, and performing air cooling;
b, quenching treatment;
and carrying out integral quenching treatment on the normalized plate forging, wherein the method specifically comprises the following steps of:
b1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, rapidly heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the thickness T and the speed of 45 mm/h;
b2, discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3, quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c tempering treatment;
the whole tempering treatment is carried out on the quenched plate forging, and the specific steps comprise:
c1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 620 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and 60 mm/h;
c2, discharging from the furnace for air cooling after heat preservation is finished;
d, sampling and detecting mechanical properties;
for the tempered calcined piece, sampling detection was performed after air cooling to 20 ℃, and the specific procedure was the same as in example 1.
The technical difference with the embodiment of the invention is that: upsetting is performed twice along the B-face blank.
The inventor carries out mechanical property detection on the forgings of each test group, and the results are shown in the following table:
table 1 mechanical properties of plate forging body sampling detection
As can be seen from the table, the plate forging manufactured by the method in the embodiment of the invention has higher longitudinal, transverse and axial mechanical property levels, can reach more than 370MPa of yield strength in all directions, more than 520MPa of tensile strength in all directions, more than 90J of low-temperature impact absorption power in all directions at-50 ℃, and has better comprehensive mechanical property level in all directions compared with the prior art; the use safety of part of components in engineering construction such as ocean engineering, wind power generation and the like is better ensured; and the service life is long, and the use of at least 20 years can be ensured, thereby meeting the expectations.

Claims (2)

1. The high-quality low-alloy high-strength plate steel forging is characterized in that the forging comprises the following raw materials in percentage by weight:
C0.16,Si0.3,Mn1.26,Cr0.15,Mo0.039,Ni0.10,P 0.01,S 0.004, ti0.005,Cu0.050,V 0.05,Nb0.036,Al0.022,N 0.0055, [ O ] =17 ppm, [ H ] =1 ppm, the remainder being Fe and other residual elements;
the preparation method of the high-quality low-alloy high-strength plate steel forging comprises the following steps of:
(1) Forging and forming:
the raw materials containing the components are subjected to blanking, the raw materials are square blanks prepared by cogging round blanks, three adjacent faces of the square blanks are respectively an A face, a B face and a C face, after the square blanks are heated, upsetting is carried out for 6 times, C face upsetting, A face upsetting, B face upsetting, C face upsetting, A face upsetting and B face upsetting are sequentially adopted, and the single upsetting ratio of 2 nd, 4 th and 6 th upsetting is controlled to be 2.1:1, a total upsetting ratio of 6.05:1, shaping to the size of a forging piece to finish forging shaping;
(2) And (3) heat treatment:
and a, normalizing:
a1, loading the plate forgings into a heat treatment furnace with the furnace temperature less than or equal to 650 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 910 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the plate thickness T and 40 mm/h;
a2 Discharging from the furnace after heat preservation is finished, and performing air cooling;
b, quenching treatment:
b1 Placing the plate forging into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, rapidly heating to 900 ℃ at the speed less than or equal to 150 ℃/h, and carrying out heat preservation for 4.0h according to the thickness T and the speed of 45 mm/h;
b2 Discharging from the furnace after heat preservation is finished, and quenching is implemented;
b3 Quenching and cooling the plate forging, wherein water is selected as a medium, the temperature of the medium is 20 ℃, and the medium is kept in a stable forced convection state during cooling;
c, tempering:
c1 Placing the plate forging into a heat treatment furnace with the furnace temperature less than or equal to 350 ℃, keeping the interval between the pieces more than or equal to 50mm, heating to 620 ℃ at the speed less than or equal to 90 ℃/h, and carrying out heat preservation for 6.0h according to the plate thickness T and 60 mm/h;
c2 Discharging from the furnace for air cooling after heat preservation is finished;
d, sampling and detecting mechanical properties:
and (3) carrying out sampling detection on the calcined piece after tempering treatment after the calcined piece is cooled to 17 ℃.
2. The high-quality low-alloy high-strength plate steel forging according to claim 1, wherein the specific steps of mechanical property detection are as follows:
(d1) Sawing test blocks at the position, which is not less than T/4, of the end surface of the lengthening end of the plate forging;
(d2) Sequentially taking samples of longitudinal stretching, longitudinal impact, transverse stretching, transverse impact and axial impact from the intercepted samples;
(d3) Processing a tensile sample according to GB/T228.1, and detecting the longitudinal and transverse tensile properties at room temperature;
(d4) The impact test pieces were processed according to GB/T229, notched in a V-shape, and tested for impact properties at-50℃in the longitudinal, transverse and axial directions.
CN202211356713.2A 2022-11-01 2022-11-01 High-quality low-alloy high-strength plate steel forging and preparation method thereof Active CN115595506B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211356713.2A CN115595506B (en) 2022-11-01 2022-11-01 High-quality low-alloy high-strength plate steel forging and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211356713.2A CN115595506B (en) 2022-11-01 2022-11-01 High-quality low-alloy high-strength plate steel forging and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115595506A CN115595506A (en) 2023-01-13
CN115595506B true CN115595506B (en) 2024-04-09

Family

ID=84851418

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211356713.2A Active CN115595506B (en) 2022-11-01 2022-11-01 High-quality low-alloy high-strength plate steel forging and preparation method thereof

Country Status (1)

Country Link
CN (1) CN115595506B (en)

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102181793A (en) * 2011-04-02 2011-09-14 南京迪威尔重型锻造股份有限公司 Process for manufacturing steel forge piece of vertical conveying pipe of deep sea oil extraction equipment
CN103741068A (en) * 2014-01-03 2014-04-23 宝鼎重工股份有限公司 Special process for freely forging EH36 optimized material steel ingot into plate-shaped bearing seat forged piece
KR101717996B1 (en) * 2015-12-11 2017-03-20 주식회사 세아베스틸 High Strength Micro-alloyed Steels for Hot Forged Engine Piston and Method For Manufacturing the Same
CN107937831A (en) * 2017-11-16 2018-04-20 兰州兰石集团有限公司 Pressure vessel 12Cr2Mo1V steel alloys and its forging heat treatment process
CN108515314A (en) * 2018-03-13 2018-09-11 张家港中环海陆特锻股份有限公司 The manufacturing process of shield machine super large wall thickness large flange
CN108914015A (en) * 2018-08-10 2018-11-30 中航卓越锻造（无锡）有限公司 The super-huge forging special-shape ring of low-alloy high-strength HI high impact function and its forging method
CN111054881A (en) * 2019-12-30 2020-04-24 南京迪威尔高端制造股份有限公司 Manufacturing process of Christmas tree body forge piece for deep sea oil production equipment
CN112251574A (en) * 2020-08-31 2021-01-22 伊莱特能源装备股份有限公司 Manufacturing method of high-performance forged ring for tank car
CN112251572A (en) * 2020-08-31 2021-01-22 伊莱特能源装备股份有限公司 Manufacturing method of high-performance wind driven generator bearing retainer forging
CN112916790A (en) * 2021-02-04 2021-06-08 伊莱特能源装备股份有限公司 Raw material for planet wheel forging and planet wheel machining method
CN113265588A (en) * 2021-05-17 2021-08-17 无锡市法兰锻造有限公司 Chromium-molybdenum alloy steel forging capable of improving impact performance and manufacturing process thereof
CN114289675A (en) * 2021-11-30 2022-04-08 伊莱特能源装备股份有限公司 Manufacturing method of gear ring forging for wind power speed increasing box
CN114540709A (en) * 2022-02-21 2022-05-27 伊莱特能源装备股份有限公司 Raw material for wheel forging and heat treatment method thereof
CN114836687A (en) * 2022-04-18 2022-08-02 伊莱特能源装备股份有限公司 High-quality and long-life raw material for processing ring rolling machine core roller forging and processing method
CN115029623A (en) * 2022-05-07 2022-09-09 兰州兰石集团有限公司铸锻分公司 Smelting and forging heat treatment process method of 12Cr2Mo1 steel for pressure container
CA3194605A1 (en) * 2021-04-01 2022-10-06 Jiangyin Xingcheng Special Steel Works Co., Ltd Hydrogen-induced cracking-resistant steel plate with thickness of > 200-250 mm for pressure vessel and method for manufacturing same

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102181793A (en) * 2011-04-02 2011-09-14 南京迪威尔重型锻造股份有限公司 Process for manufacturing steel forge piece of vertical conveying pipe of deep sea oil extraction equipment
CN103741068A (en) * 2014-01-03 2014-04-23 宝鼎重工股份有限公司 Special process for freely forging EH36 optimized material steel ingot into plate-shaped bearing seat forged piece
KR101717996B1 (en) * 2015-12-11 2017-03-20 주식회사 세아베스틸 High Strength Micro-alloyed Steels for Hot Forged Engine Piston and Method For Manufacturing the Same
CN107937831A (en) * 2017-11-16 2018-04-20 兰州兰石集团有限公司 Pressure vessel 12Cr2Mo1V steel alloys and its forging heat treatment process
CN108515314A (en) * 2018-03-13 2018-09-11 张家港中环海陆特锻股份有限公司 The manufacturing process of shield machine super large wall thickness large flange
CN108914015A (en) * 2018-08-10 2018-11-30 中航卓越锻造（无锡）有限公司 The super-huge forging special-shape ring of low-alloy high-strength HI high impact function and its forging method
CN111054881A (en) * 2019-12-30 2020-04-24 南京迪威尔高端制造股份有限公司 Manufacturing process of Christmas tree body forge piece for deep sea oil production equipment
CN112251572A (en) * 2020-08-31 2021-01-22 伊莱特能源装备股份有限公司 Manufacturing method of high-performance wind driven generator bearing retainer forging
CN112251574A (en) * 2020-08-31 2021-01-22 伊莱特能源装备股份有限公司 Manufacturing method of high-performance forged ring for tank car
CN112916790A (en) * 2021-02-04 2021-06-08 伊莱特能源装备股份有限公司 Raw material for planet wheel forging and planet wheel machining method
CA3194605A1 (en) * 2021-04-01 2022-10-06 Jiangyin Xingcheng Special Steel Works Co., Ltd Hydrogen-induced cracking-resistant steel plate with thickness of > 200-250 mm for pressure vessel and method for manufacturing same
CN113265588A (en) * 2021-05-17 2021-08-17 无锡市法兰锻造有限公司 Chromium-molybdenum alloy steel forging capable of improving impact performance and manufacturing process thereof
CN114289675A (en) * 2021-11-30 2022-04-08 伊莱特能源装备股份有限公司 Manufacturing method of gear ring forging for wind power speed increasing box
CN114540709A (en) * 2022-02-21 2022-05-27 伊莱特能源装备股份有限公司 Raw material for wheel forging and heat treatment method thereof
CN114836687A (en) * 2022-04-18 2022-08-02 伊莱特能源装备股份有限公司 High-quality and long-life raw material for processing ring rolling machine core roller forging and processing method
CN115029623A (en) * 2022-05-07 2022-09-09 兰州兰石集团有限公司铸锻分公司 Smelting and forging heat treatment process method of 12Cr2Mo1 steel for pressure container

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高温形变热处理对20CrMnTiH钢锻件组织及性能的影响;冯锐;《金属热处理》;20220325;第47卷(第3期);72-76 *

Also Published As

Publication number Publication date
CN115595506A (en) 2023-01-13

Similar Documents

Publication Publication Date Title
US11015232B2 (en) Seamless steel tube with high strength and toughness and manufacturing method therefor
CN110423950B (en) Fe-Mn-Al-C series medium-manganese low-temperature steel and preparation method thereof
CN108517461B (en) High-performance martensitic stainless steel flange and manufacturing method thereof
CN109811252B (en) High-strength martensitic stainless steel and manufacturing process thereof
CN107686948A (en) A kind of soft martensitic stain less steel clack box forge piece manufacturing process
CN111893394B (en) Manufacturing process of offshore wind power foundation pile flange
CN105506457A (en) Low-temperature forged steel manufacturing method and product thereof
JP2011510175A (en) High alloy cold die steel
CN104117550B (en) A kind of hot-work die seamless steel pipe and production method thereof
CN115595506B (en) High-quality low-alloy high-strength plate steel forging and preparation method thereof
CN113088817A (en) Seamless steel tube, preparation method thereof and oil cylinder
CN107937829B (en) High-strength rotor shaft forging for high-voltage motor and heat treatment method
CN115948641A (en) Production method of steel for bainite frog with large compression ratio
CN114182067B (en) Forging and heat treatment method for martensite heat-resistant stainless steel special-shaped forge piece
CN108690938B (en) Gradient-strengthened maraging steel firing pin and preparation method thereof
CN110885947A (en) High-performance high-toughness hot-work die steel and preparation method thereof
CN112496216B (en) Forging production process of 30Cr15MoN high-nitrogen martensitic stainless steel bar
JPH064889B2 (en) Method for manufacturing thick ultra high strength steel
CN114888220A (en) Forging and heat treatment process for 925A marine pressure shell steel forging
CN114645223A (en) High-manganese medium plate capable of improving ultralow-temperature toughness
CN115125457A (en) Steel produced by continuous casting of large round billet and used for-50 ℃ low-temperature-resistant petrochemical heat exchanger tube plate and manufacturing method thereof
CN114836681A (en) High-strength seamless steel pipe with good fatigue resistance and manufacturing method thereof
CN115323276B (en) Bearing steel with high strength and high plasticity and production process thereof
CN115216605B (en) Method for eliminating black spot tissue in large low-alloy steel forging
CN115125444B (en) Q550ME thick-wall free forging and thermal processing method for improving mechanical properties 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