CN106947914B - A kind of steel ingot of forging pipe die - Google Patents

A kind of steel ingot of forging pipe die Download PDF

Info

Publication number
CN106947914B
CN106947914B CN201710363404.0A CN201710363404A CN106947914B CN 106947914 B CN106947914 B CN 106947914B CN 201710363404 A CN201710363404 A CN 201710363404A CN 106947914 B CN106947914 B CN 106947914B
Authority
CN
China
Prior art keywords
steel ingot
slag
temperature
pipe die
ingot
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
CN201710363404.0A
Other languages
Chinese (zh)
Other versions
CN106947914A (en
Inventor
常福华
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.)
Shandong Tripod Heavy Industry Industrial Co Ltd
Original Assignee
Shandong Tripod Heavy Industry Industrial 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 Shandong Tripod Heavy Industry Industrial Co Ltd filed Critical Shandong Tripod Heavy Industry Industrial Co Ltd
Priority to CN201710363404.0A priority Critical patent/CN106947914B/en
Publication of CN106947914A publication Critical patent/CN106947914A/en
Application granted granted Critical
Publication of CN106947914B publication Critical patent/CN106947914B/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
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006—Adding metallic additives
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • 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
    • 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
    • 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
    • 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
    • C22C38/18—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
    • 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)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The present invention relates to steel ingot production field, more specifically a kind of forging pipe die steel ingot and its production method, 2 ~ 5% present invention that the riser accounts for steel ingot total weight forge pipe die lumber recovery raising 5 ~ 8%, 500 yuan of ton forging cost reduction by controlling process conditions；Pouring temperature is reduced to 1535 ~ 1545 DEG C by 1560 ~ 1565 DEG C；The duration of pouring is reduced simultaneously, Segregation of Chemical Composition reduces, and C deviations are reduced to ± 0.02 from ± 0.04；Riser accounts for the 2 ~ 5% of steel ingot total weight, has saved material, further improves lumber recovery；Gas content is as follows:TO≤20ppm, H≤1.0ppm, N≤60ppm are substantially reduced than originally.

Description

A kind of steel ingot of forging pipe die
Technical field
The present invention relates to steel ingot production field, more specifically a kind of forging pipe die steel ingot and its production method.
Background technology
The ingot cast can be made to have since misoperation or note speed, casting temperature control system are improper during ingot casting in steel ingot production Many disadvantages.Common defect is：The scabbing of surface of steel ingot, pipe and longitudinal and transverse crackle, internal Residual hole, rimhole, Loose and segregation is mingled with caused by the refractory material and clinker that are mixed into steel, dust.These defects can substantially reduce steel ingot at Base rate, or even entire steel ingot is made to scrap, in order to mitigate drawbacks described above, shrinkage cavity and porosity, exhaust sum aggregate are prevented in ingot steel casting The effect of slag, riser typically constitute from, and forge the steel ingot of pipe die, and center needs to be punched out, therefore the center of steel ingot Quality does not influence the quality of pipe die, therefore riser causes a large amount of waste.
Invention content
The goal of the invention of the present invention be aiming at the deficiencies in the prior art, provide a kind of forging pipe die steel ingot and Its production method.
The present invention is achieved by the following technical solutions：
A kind of forging pipe die steel ingot, the riser account for the 2 ~ 5% of steel ingot total weight.
The weight of above-mentioned Ingot Type is 30-40t.
The main chemical compositions of above-mentioned steel ingot are by weight percent：C 0.16-0.22%、Si 0.25-0.37%、Mn 0.25-0.35%、P≤0.008 %、S≤0.006、Cr 2.35-2.55%、Ni 0.32-0.45%、Cu≤0.10、Mo 0.32- 0.38%, [H]≤1.2PPM.
A kind of production method of above-mentioned forging pipe die steel ingot, it is characterised in that：Include the following steps：Raw material preparation, EBT smeltings, LF refining, VD degassings, molding casting, hot sending forging.
Further, above-mentioned EBT smeltings include the following steps：
（1.1）It feeds, is powered, furnace bottom lime 1000kg by dispensing；
（1.2）Molten steel of melting bath temperature reaches 1560 DEG C, and fine melt analysis, decarburized amount is controlled in 0.40% or more, decarbonization rate control System is the 3% of Metal Weight in 0.02 ~ 0.03%/min, the control quantity of slag；
（1.3）Oxygen end, >=0.03%, the control of [P] desired value exists the control of terminal [C] desired value：≤ 0.004%, tapping temperature Degree control exists：≥1640℃；
（1.4）Tap：EBT tappings forbid slag, ensure that 10% stays steel amount；
（1.5）Ladle deoxidation agent and slag charge addition：Deoxidier Al 1.5Kg/t, lime 15Kg/t；
（1.6）Tapping material addition sequence：Deoxidier, ferroalloy 20kg/t, slag charge.
Optimization, above-mentioned LF refining includes the following steps：
（2.1）Buggy ladle is opened to LF stove heat stations, and Ar 0.2 ~ 0.4MPa of atmospheric pressure are adjusted, and slugging is even after energization, respectively SiC powder, Si, Al powder of 0.5 ~ 0.8kg/t is added；
（2.2）Slag condition is adjusted, slag color turns white, recovery time >=18 minute, temperature >=1590 DEG C sampling analysis；
（2.3）White slag is kept for >=25 minutes, keeps furnace reduction atmosphere；Deoxidier 2.0kg/t is added, adjustment temperature is extremely 1620~1630℃；
（2.4）Adjust chemical analysis：Match added elements by tripod special steel chemical composition standard, adds ferroalloy 0.5kg/t or increasing Carbon agent 0.1kg/t, it is necessary to >=8 minutes could sampling analysis；
（2.5）Go out first 5 minutes adjustment basicity of slags of packet to 2.5 ~ 3.0；Chemical analysis carries out after fully entering composition specification Bull ladle；
（2.6）Bull ladle feeds Al lines into the stokeholds VD：3 meters/t, 2.5 meters/t of Ca Si wire feeding and increase 0.03% Si；
Optimization, above-mentioned VD furnace technologies include the following steps：
（3.1）Check that VD furnace apparatus, vapor (steam) temperature are more than 170 DEG C, steam pressure is more than 0.8MPa；
（3.2）Vacuum into pump time≤8 minute, vacuum degree 66.7Pa, time >=18 minute, Ar pressure 1.5-2.5Kg；
（3.3）Vacuum finishes, sampling analysis；
（3.4）Vacuum finishes to bull ladle, quiet to blow the Ar times 10-20 minutes, adjustment Ar atmospheric pressures to 0.15 ~ 0.25MPa, molten steel Do not rout up the top of the slag；
（3.5）Bull ladle pouring temperature：1535℃-1545℃；
Further, above-mentioned pouring technology includes the following steps：
（4.1）Using argon for protecting pouring, 1535 ~ 1545 DEG C of pouring temperature；
（4.2）The 35t steel ingot ingot body durations of pouring: 19~21min；The riser gating time: 3~5min；
（4.3）Annealing process：Pour hot charging after finishing 12h, 80 ~ 100 DEG C/h of heating rate, 760 DEG C of holding temperature, when heat preservation Between 30h, cooling rate≤30 DEG C/h, tapping temperature≤150 DEG C;
（4.4）With low carbon protective slag, fixed carbon 3 ~ 5%.
The beneficial effects of the invention are as follows：
Pipe die lumber recovery raising 5 ~ 8%, 500 yuan of ton forging cost reduction are forged by controlling process conditions；
Pouring temperature is reduced to 1535 ~ 1545 DEG C by 1560 ~ 1565 DEG C；The duration of pouring is reduced simultaneously, Segregation of Chemical Composition Reduce, C deviations are reduced to ± 0.02 from ± 0.04；
Riser accounts for the 2 ~ 5% of steel ingot total weight, has saved material, further improves lumber recovery；
Gas content is as follows:TO≤20ppm, H≤1.0ppm, N≤60ppm are substantially reduced than originally.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described, so that those skilled in the art can be better The solution present invention, but be not intended to limit the present invention.
Embodiment 1
Produce 35t21CrMo10 steel ingots
Chemical composition is by weight percent：C 0.16-0.22%、Si 0.25-0.37%、Mn 0.25-0.35%、P≤ 0.008 %, S≤0.006, Cr 2.35-2.55%, Ni 0.32-0.45%, Cu≤0.10, Mo 0.32-0.38%, [H]≤ 1.2PPM。
（1.1）It feeds, is powered, furnace bottom lime 1000kg by dispensing；
（1.2）Molten steel of melting bath temperature reaches 1560 DEG C, and fine melt analysis, decarburized amount is controlled in 0.40% or more and decarbonization rate Control is the 3% of Metal Weight in 0.02 ~ 0.03%/min, the control quantity of slag；
（1.3）Oxygen end, >=0.03%, the control of [P] desired value exists the control of terminal [C] desired value：≤ 0.004%, tapping temperature Degree control exists：≥1640℃；
（1.4）Tap：EBT tappings forbid slag, ensure that 10% stays steel amount；
（1.5）Ladle deoxidation agent and slag charge addition：Deoxidier Al 1.5Kg/t, lime 15Kg/t；
（1.6）Tapping material addition sequence：Deoxidier, ferroalloy 20kg/t, slag charge.
Treated component content
C 0.08-0.18%、Si 0.17-0.28%、Mn 0.2-0.3%、P≤0.008、Cr 2.20-2.40%、Ni 0.28-0.35%、Mo 0.28-0.34%。
LF refining includes the following steps：
（2.1）Buggy ladle is opened to LF stove heat stations, and Ar 0.2 ~ 0.4MPa of atmospheric pressure are adjusted, and slugging is even after energization, respectively SiC powder, Si, Al powder of 0.5 ~ 0.8kg/t is added；
（2.2）Slag condition is adjusted, slag color turns white, recovery time >=18 minute, temperature >=1590 DEG C sampling analysis；
（2.3）White slag is kept for >=25 minutes, keeps furnace reduction atmosphere；Deoxidier 2.0kg/t can be added, adjustment temperature is extremely 1620~1630℃；
（2.4）Adjust chemical analysis：Match added elements by tripod special steel chemical composition standard, adds ferroalloy or carburant（Add Enter amount）Necessary >=8 minutes could sampling analysis；
（2.5）Go out first 5 minutes adjustment basicity of slags of packet to 2.5 ~ 3.0；Chemical analysis carries out after fully entering composition specification Bull ladle；
（2.6）Bull ladle feeds Al lines into the stokeholds VD：3 meters/t, 2.5 meters/t of Ca Si wire feeding (increases Si 0.03%)；
VD furnace technologies include the following steps：
（3.1）Check that VD furnace apparatus, vapor (steam) temperature are more than 170 DEG C, steam pressure is more than 0.8MPa；
（3.2）Vacuum into pump time≤8 minute, vacuum degree 66.7Pa, time >=18 minute, Ar pressure 1.5-2.5Kg；
（3.3）Vacuum finishes, sampling analysis, and fixed [H], fixed [O] are required according to steel grade or ingot shape；
（3.4）Vacuum finishes to bull ladle, quiet to blow the Ar times 10-20 minutes, adjustment Ar atmospheric pressures to 0.15 ~ 0.25MPa, molten steel Do not rout up the top of the slag；
（3.5）Bull ladle pouring temperature：1535℃-1545℃；
Pouring technology includes the following steps：
（4.1）Using argon for protecting pouring, 1535 ~ 1545 DEG C of pouring temperature；
（4.2）The steel ingot ingot body duration of pouring:For 19 ~ 21min；3 ~ 5min of riser gating time
（4.3）Annealing is executed by former technique；
（4.4）With low carbon protective slag, fixed carbon 3 ~ 5%.

Claims (1)

1. a kind of forging pipe die steel ingot, it is characterised in that：Riser accounts for the 2 ~ 5% of steel ingot total weight；
The weight of above-mentioned Ingot Type is 30-40t；
A kind of above-mentioned forging pipe die steel ingot, main chemical compositions are by weight percent：C 0.16-0.22%、Si 0.25- 0.37%、Mn 0.25-0.35%、P≤0.008 %、S≤0.006%、Cr 2.35-2.55%、Ni 0.32-0.45%、Cu≤ 0.10%, Mo 0.32-0.38%, [H]≤1.2ppm, remaining is iron and inevitable impurity；
A kind of production method of above-mentioned forging pipe die steel ingot, includes the following steps：Raw material preparation, EBT smeltings, LF refining, VD degassings, molding casting, hot sending forging；
The EBT smeltings include the following steps：
（1.1）It feeds, is powered, furnace bottom lime 1000kg by dispensing；
（1.2）Molten steel of melting bath temperature reaches 1560 DEG C, and fine melt analysis, decarburized amount control exists in the control of 0.40% or more, decarbonization rate 0.02 ~ 0.03%/min, the control quantity of slag are the 3% of Metal Weight；
（1.3）Oxygen end, >=0.03%, the control of [P] desired value exists the control of terminal [C] desired value：≤ 0.004%, tapping temperature control System exists：d≥1640℃；
（1.4）Tap：EBT tappings forbid slag, ensure that 10% stays steel amount；
（1.5）Ladle deoxidation agent and slag charge addition：Deoxidier Al 1.5kg/t, lime 15kg/t；
（1.6）Tapping material addition sequence：Deoxidier, ferroalloy 20kg/t, slag charge；
The LF refining includes the following steps：
（2.1）Buggy ladle is opened to LF stove heat stations, and Ar 0.2 ~ 0.4MPa of atmospheric pressure are adjusted, and slugging is uniform after energization, is added respectively Enter SiC powder, Si, Al powder of 0.5 ~ 0.8kg/t；
（2.2）Slag condition is adjusted, slag color turns white, recovery time >=18 minute, temperature >=1590 DEG C sampling analysis；
（2.3）White slag is kept for >=25 minutes, keeps furnace reduction atmosphere；Addition deoxidier 2.0kg/t, adjustment temperature to 1620 ~ 1630℃；
（2.4）Adjust chemical analysis：By C 0.16-0.22%, Si 0.25-0.37%, Mn 0.25-0.35%, P≤0.008 %, S ≤ 0.006%, Cr 2.35-2.55%, Ni 0.32-0.45%, Cu≤0.10%, Mo 0.32-0.38%, [H]≤1.2ppm, Yu Weitie and inevitable impurity match added elements, add ferroalloy 0.5kg/t or carburant 0.1kg/t, it is necessary to >=8 minutes ability Sampling analysis；
（2.5）Go out first 5 minutes adjustment basicity of slags of packet to 2.5 ~ 3.0；Chemical analysis carries out bull ladle after fully entering composition specification；
（2.6）Bull ladle feeds Al lines into the stokeholds VD：3 meters/t, 2.5 meters/t of Ca Si wire feeding and increase 0.03% Si；
The molding casting technique includes the following steps：
（4.1）Using argon for protecting pouring, 1535 ~ 1545 DEG C of pouring temperature；
（4.2）The 35t steel ingot ingot body durations of pouring： 19~21min；The riser gating time： 3~5min；
（4.3）Annealing process：Pour hot charging after finishing 12h, 80 ~ 100 DEG C/h of heating rate, 760 DEG C of holding temperature, soaking time 30h, cooling rate≤30 DEG C/h, tapping temperature≤150 DEG C；
（4.4）With low carbon protective slag, fixed carbon 3 ~ 5%.
CN201710363404.0A 2017-05-22 2017-05-22 A kind of steel ingot of forging pipe die Active CN106947914B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710363404.0A CN106947914B (en) 2017-05-22 2017-05-22 A kind of steel ingot of forging pipe die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710363404.0A CN106947914B (en) 2017-05-22 2017-05-22 A kind of steel ingot of forging pipe die

Publications (2)

Publication Number Publication Date
CN106947914A CN106947914A (en) 2017-07-14
CN106947914B true CN106947914B (en) 2018-08-24

Family

ID=59479869

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710363404.0A Active CN106947914B (en) 2017-05-22 2017-05-22 A kind of steel ingot of forging pipe die

Country Status (1)

Country Link
CN (1) CN106947914B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109226702A (en) * 2018-10-23 2019-01-18 成都先进金属材料产业技术研究院有限公司 The method for improving 40Cr13 static ingot internal soundness
CN111167994B (en) * 2020-02-12 2022-03-29 山东宝鼎重工实业有限公司 Continuous forging production process for cylinder parts

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103667953A (en) * 2013-11-28 2014-03-26 江苏亚星锚链股份有限公司 Oceanic mooring chain steel with low environmental crack sensitivity and ultrahigh obdurability and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6211296B2 (en) * 2013-04-30 2017-10-11 株式会社神戸製鋼所 Steel plate with excellent sour resistance and HAZ toughness
JP2015140442A (en) * 2014-01-27 2015-08-03 株式会社神戸製鋼所 Steel material excellent in hydrogen induced cracking resistance and production method therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103667953A (en) * 2013-11-28 2014-03-26 江苏亚星锚链股份有限公司 Oceanic mooring chain steel with low environmental crack sensitivity and ultrahigh obdurability and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
锻造钢锭的几何因素对其内部缺陷影响的数值模拟研究;盛星星;《中国优秀硕士论文全文数据库（电子期刊） 工程科技I辑》;20160315(第3期);第22-23页 *

Also Published As

Publication number Publication date
CN106947914A (en) 2017-07-14

Similar Documents

Publication Publication Date Title
CN105177215B (en) Efficient production process of high aluminum-alloy-content structure round steel
CN103627841B (en) Control method for nitrogen content of molten steel of wear-resistant steel
CN103952511A (en) Method for controlling nitrogen content of high-strength steel molten steel
CN103741006B (en) A kind of preparation method containing the low nitrogen stainless steel of Ti
CN105463299B (en) A kind of smelting process of high alumina nitrated steel
CN108330245A (en) A kind of high-purity smelting process of stainless steel
CN112481551B (en) Steel WB36V for power station and smelting and continuous casting production process thereof
CN105154623B (en) A kind of efficient alloyage process of melting 38CrMoAl steel
CN110541114B (en) Smelting method of high-nitrogen high-sulfur low-aluminum steel
CN105316558A (en) Preparation method of boron-containing steel preventing casting blank corner cracking
CN106947914B (en) A kind of steel ingot of forging pipe die
CN107447157A (en) A kind of cold-forging steel and its manufacturing process
CN102776443B (en) 420MPa-level low-alloy high-intensity ultra-thick steel plate and manufacturing method thereof
CN111041352B (en) External refining production method of wire rod for cutting diamond wire
CN106591681B (en) The method for refining of high-purity hot-work die Electro Slag Remelting Steel
CN109868415B (en) Smelting method of low-sulfur low-boron pipeline steel
CN108330240A (en) Method of the aluminium without calcification processing drops in continuous casting Q235 steel grades
CN106521329A (en) Production method for non-quenched and tempered free-cutting steel
CN110819761A (en) Bottom pouring steel ingot or electrode blank and preparation method thereof
CN112921247A (en) Method for reducing corner cracks of medium-carbon boron-containing steel continuous casting slab
CN102787206A (en) Smelting method for controlling nitrogen content in steel ingot of medium carbon chromous mold steel and steel ingot
CN108251598B (en) Carbon increasing and nitrogen controlling production method of medium-carbon high-alloy steel
CN105695661A (en) Method for smelting Q235B steel on CSP production line
CN108913834A (en) The technique that molten iron blowing, vacuum outgas, heated by electrodes produce high-purity pig iron
CN111705269A (en) Low-silicon steel 27NiCrMoV15-6 and smelting continuous casting production process 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
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A steel ingot for forging pipe dies

Effective date of registration: 20220621

Granted publication date: 20180824

Pledgee: Weihai commercial bank Limited by Share Ltd. Dezhou branch

Pledgor: SHANDONG BAODING HEAVY INDUSTRIAL CO.,LTD.

Registration number: Y2022980008171