CN106636889A - Economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and production method thereof - Google Patents
Economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and production method thereof Download PDFInfo
- Publication number
- CN106636889A CN106636889A CN201610946664.6A CN201610946664A CN106636889A CN 106636889 A CN106636889 A CN 106636889A CN 201610946664 A CN201610946664 A CN 201610946664A CN 106636889 A CN106636889 A CN 106636889A
- Authority
- CN
- China
- Prior art keywords
- thickness
- temperature
- strength
- production method
- carbon
- 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.)
- Pending
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
-
- 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
- C21D8/0226—Hot rolling
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses an economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and a production method thereof. The steel sheet comprises the following components in percentage by weight: 0.13-0.15 percent of C, 0.20-0.40 percent of Si, 0.90-1.10 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.005 percent of S, 0.20-0.40 percent of Cr, 0.15-0.35 percent of Mo, 0.020-0.050 percent of V, 0.015-0.035 percent of Nb, 0.008-0.020 percent of Ti, 0.020-0.040 percent of Ni, 0.020-0.050 percent of Al, 0.0008-0.002 percent of B, and the balance of Fe and inevitable impurities. The production method comprises a smelting and continuous casting process, a heating process, a rolling process and a heat treatment process. The thickness of the economic low-carbon-equivalent high-strength high-toughness quenched and tempered steel sheet is 60-80 mm, and the economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet has the advantages that the strength is moderate, the low temperature impact toughness of a half part of the thickness of the steel sheet is high, and the application prospect is wide.
Description
Technical field
The invention belongs to metallurgical technology field, specifically related to a kind of economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates
And its production method.
Background technology
Yield strength 690MPa above rank quenching and tempering type high-strength steel Q690F be mainly used in excavation machinery, earth moving machinery,
The manufacture of the main positions such as crane tool, mining machinery, fork truck and industrial vehicle.With engineering machinery to high parameter,
Maximize, lightweight development, and market competition is growing more intense, obdurability, weldability to engineering machinery construction material and
Cost proposes higher requirement.The Q690F high-strength steel of conventional modulated technique productions is typically by adding Ni, Nb, Cr, V etc. valuable
Metal is improving the intensity and toughness of steel plate.In recent years, with the further development of TMCP technologies, using TMCP technique productions
The Q690F steel plates for going out have more low-carbon-equivalent（Ceq）And cost, the thickness of such steel plate generally individually in below 50mm, 50mm with
The Q690F of upper thickness is still produced using hardening and tempering process and quenching and tempering type Q690F quality stability and steel plate uniformity are excellent.Cause
This, in the production of large-scale engineering machinery key position, quenching and tempering type Q690F is still irreplaceable, but its alloying element content is high, causes
The cost of steel plate, carbon equivalent（Ceq）It is higher, so as to constrain the further development of quenching and tempering type Q690F steel plates.
The content of the invention
The technical problem to be solved in the present invention is to provide that a kind of economical, low-carbon-equivalent, obdurability be excellent, low-temperature impact is tough
The good quenched shape steel plate of property；Present invention also offers a kind of producer of economical low-carbon-equivalent high-strength and high-ductility hardened and tempered steel plate
Method.
To solve above-mentioned technical problem, the present invention is adopted the following technical scheme that, a kind of economical low-carbon-equivalent high-strength and high ductility
Property Q690F steel plates, the steel plate its be made up of the component of following weight percentage：C：0.13%～0.15%, Si：0.20%～
0.40%, Mn：0.90%～1.10%, P≤0.015%, S≤0.005%, Cr：0. 20%～0.40%, Mo：0.15%～0.35%, V：
0.020%～0.050%, Nb：0.015%～0.035%, Ti：0.008%～0.020%, Ni：0.020%～0.040%, Al：
0.020%～0.050%, B：0.0008%～0.002%, balance of Fe and inevitable impurity.
Ceq≤0.53 of the present invention, Ceq=C+Mn/6+ (Cr+Mo+V)/5+ (Cu+Ni)/15.
Steel plate thickness of the present invention is 60-80mm.
Yield strength >=690MPa at thickness of slab of the present invention 1/2, tensile strength 770-930MPa of thickness of slab 1/2, thickness of slab 1/2 extends
Rate A50%≥14%；1/2-60 DEG C of thickness of slab longitudinally, laterally ballistic work >=34 joule.
The present invention also provides a kind of production method of above-mentioned economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates, described
Production method includes smelting continuous casting working procedure, heating process, rolling process and heat treatment step；The smelting continuous casting working procedure gained connects
Strand is made up of the component of following weight percentage：C：0.13%～0.15%, Si：0.20%～0.40%, Mn：0.90%～
1.10%, P≤0.015%, S≤0.005%, Cr：0.20%～0.40%, Mo：0.15%～0.35%, V：0.020%～0.050%,
Nb：0.015%～0.035%, Ti：0.008%～0.020%, Ni：0.020%～0.040%, Al：0.020%～0.050%, B：
0.0008%～0.002%, balance of Fe and inevitable impurity.
Heating process of the present invention：1250 DEG C of maximum heating temperature, 1220～1240 DEG C of soaking temperature, heating coefficient >=
11min/cm, soaking time >=60min.
Rolling process of the present invention：Roll and adopt controlled rolling technique, 1050 DEG C of a stage start rolling temperature～1100 DEG C,
Low speed heavy reduction rolling, the two-stage start rolling temperature≤850 DEG C, the steel thickness that dries in the air is >=2h, and h is finished steel plate mm of thickness.
Rolling process of the present invention：On-line cooling is carried out after rolling, red temperature is 600 DEG C～700 DEG C, obtains steel plate thick
Product.
Heat treatment step of the present invention adopts quenching+tempering technique, and hardening media is water.
Heat treatment step of the present invention adopts quenching+tempering technique, and hardening heat is 910 ± 10 DEG C, and temperature is
570 ± 20 DEG C, temperature retention time（4-4.5）* t, t are finished steel plate mm of thickness, air cooling finished product steel plate after insulation.
The beneficial effect brought using above-mentioned technical proposal is：The production method of the present invention realizes relatively low carbon and works as
Amount Design of Chemical Composition, reduces the precious alloys such as Nb, Ni, Cr, is II type controlled rollings using two-stage controlled rolling process, solves crystalline substance
The problems such as grain is thick uneven, by quenching+tempering technique, has finally given with uniform tiny institutional framework and excellent
Comprehensive mechanical property, the steel plate items mechanical performance index of production meets technical requirements, produces cost and significantly reduces.After testing originally
Mechanical property reaches table 1 and requires at the steel plate thickness of slab 1/2 of invention.
The mechanical property of steel plate index of the present invention of table 1
。
Specific embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
A kind of economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates and its production method are as described below.
The thickness of this steel plate is 80mm, is made up of the component of following weight percentage：C：0.15%, Si：0.38%, Mn：
1.09%, P：0.014%, S：0.005%, Cr：0.38%, Mo：0.34%, V：0.048, Nb：0.32%, Ti：0.019%, Ni：
0.38%, Al：0.047%, B：0.0018%, balance of Fe and inevitable impurity, Ceq=0.51.
The production method of this steel plate includes smelting continuous casting working procedure, heating process, rolling process, heat treatment step, each operation
Step is as follows：
（1）Molten steel elder generation Jing electric furnace smeltings, send into LF refining furnace refining, depth deoxidation, desulfurization, as requested adjust molten steel into.Steel
Coolant-temperature gage reaches（1620±10）VD stove Fruit storages are proceeded to after DEG C.Cast out blank through continuous casting operation afterwards, obtain thickness
Spend the continuous casting billet for 300mm.
（2）Heating process：1250 DEG C of heating-up temperature, 1240 DEG C of soaking temperature, total heat time 350min, heating coefficient
11.6min/cm, temperature retention time 60min.
（3）Rolling：Rolling adopts high temperature re-crystallization controlled rolling technique, 1080 DEG C of start rolling temperature, two-stage start rolling temperature
845 DEG C, the steel thickness that dries in the air is 168mm, rolls rear on-line cooling, and red temperature is 680 DEG C.
（4）Heat treatment step：Steel plate steel plate is obtained described quenching and tempering, high plate through quenching+tempering process；Wherein,
Hardening heat is 910 DEG C, and acceleration cooling medium is water；Temperature is 590 DEG C, and temperature retention time is 352min, air cooling of coming out of the stove.
Mechanical property at this quenching and tempering, high plate thickness 1/2 is：Rp0.2：780MPa、Rm：870MPa、A5017.0%、-60
DEG C when longitudinal direction Akv173J, -60 DEG C when horizontal Akv108J.
Embodiment 2
A kind of economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates and its production method are as described below.
The thickness of this steel plate is 80mm, is made up of the component of following weight percentage：C：0.15%, Si：0.38%, Mn：
1.09%, P：0.014%, S：0.005%, Cr：0.38%, Mo：0.34%, V：0.048, Nb：0.32%, Ti：0.019%, Ni：
0.38%, Al：0.047%, B：0.0018%, balance of Fe and inevitable impurity, Ceq=0.51.
The production method of this steel plate includes smelting continuous casting working procedure, heating process, rolling process, heat treatment step, each operation
Step is as follows：
（1）Molten steel elder generation Jing electric furnace smeltings, send into LF refining furnace refining, and depth deoxidation, desulfurization adjust as requested molten steel composition,
Liquid steel temperature reaches（1620±10）VD stove Fruit storages are proceeded to after DEG C.Cast out blank through continuous casting operation afterwards, obtain
Thickness is the continuous casting billet of 300mm.
（2）Heating process：1240 DEG C of heating-up temperature, 1230 DEG C of soaking temperature, total heat time 370min, heating coefficient
12.3min/cm, temperature retention time 70min.
（3）Rolling：Rolling adopts high temperature re-crystallization controlled rolling technique, 1060 DEG C of start rolling temperature, two-stage start rolling temperature
825 DEG C, the steel thickness that dries in the air is 163mm, rolls rear on-line cooling, and red temperature is 630 DEG C.
（4）Heat treatment step：Steel plate steel plate is obtained described quenching and tempering, high plate through quenching+tempering process；Wherein,
Hardening heat is 905 DEG C, and acceleration cooling medium is water；Temperature is 550 DEG C, and temperature retention time is 330min, air cooling of coming out of the stove.
Mechanical property at this quenching and tempering, high plate thickness 1/2 is：Rp0.2：740MPa、Rm：820MPa、A5015.0%、-60
DEG C when longitudinal direction Akv148J, -60 DEG C when horizontal Akv109J.
Embodiment 3
A kind of economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates and its production method are as described below.
The thickness of this steel plate is 60mm, and by the component of following weight percentage C is constituted：0.13%, Si：0.20%, Mn：
1.10%, P：0.015%, S：0.003%, Cr：0.20%, Mo：0.35%, V：0.020%, Nb：0.015%, Ti：0.008%, Ni：
0.020%, Al：0.050%, B：0.002%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting continuous casting working procedure, heating process, rolling process, heat treatment step, each operation
Step is as follows：
（1）Molten steel elder generation Jing electric furnace smeltings, send into LF refining furnace refining, depth deoxidation, desulfurization, as requested adjust molten steel into.Steel
Coolant-temperature gage reaches（1620±10）VD stove Fruit storages are proceeded to after DEG C.Cast out blank through continuous casting operation afterwards, obtain thickness
Spend the continuous casting billet for 300mm.
（2）Heating process：1250 DEG C of heating-up temperature, 1220 DEG C of soaking temperature, total heat time 330min, heating coefficient
11min/cm, temperature retention time 65min.
（3）Rolling：Rolling adopts high temperature re-crystallization controlled rolling technique, 1050 DEG C of start rolling temperature, two-stage start rolling temperature
850 DEG C, the steel thickness that dries in the air is 120mm, rolls rear on-line cooling, and red temperature is 600 DEG C.
（4）Heat treatment step：Steel plate steel plate is obtained described quenching and tempering, high plate through quenching+tempering process；Wherein,
Hardening heat is 920 DEG C, and acceleration cooling medium is water；Temperature is 570 DEG C, and temperature retention time is 270min, air cooling of coming out of the stove.
Mechanical property at this quenching and tempering, high plate thickness 1/2 is：Rp0.2：799 MPa、Rm：860 MPa、A5015.5%、-
Longitudinal direction Akv188J when 60 DEG C, -60 DEG C when horizontal Akv109J.
Embodiment 4
A kind of economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates and its production method are as described below.
The thickness of this steel plate is 70mm, is made up of the component of following weight percentage：C：0.14%, Si：0.40%, Mn：
0.90%, P：0.005%, S≤0.004%, Cr：0.40%, Mo：0.15%, V：0.050%, Nb：0.035%, Ti：0.020%, Ni：
0.040%, Al：0.020%, B：0.0008%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting continuous casting working procedure, heating process, rolling process, heat treatment step, each operation
Step is as follows：
（1）Molten steel elder generation Jing electric furnace smeltings, send into LF refining furnace refining, and depth deoxidation, desulfurization adjust as requested molten steel composition,
Liquid steel temperature reaches（1620±10）VD stove Fruit storages are proceeded to after DEG C.Cast out blank through continuous casting operation afterwards, obtain
Thickness is the continuous casting billet of 300mm.
（2）Heating process：1245 DEG C of heating-up temperature, 1235 DEG C of soaking temperature, the min of total heat time 360, heating coefficient
12min/cm, temperature retention time 80min.
（3）Rolling：Rolling adopts high temperature re-crystallization controlled rolling technique, 1100 DEG C of start rolling temperature, two-stage start rolling temperature
835 DEG C, the steel thickness that dries in the air is 145mm, rolls rear on-line cooling, and red temperature is 700 DEG C.
（4）Heat treatment step：Steel plate steel plate is obtained described quenching and tempering, high plate through quenching+tempering process；Wherein,
Hardening heat is 900 DEG C, and acceleration cooling medium is water；Temperature is 580 DEG C, and temperature retention time is 280min, air cooling of coming out of the stove.
Mechanical property at this quenching and tempering, high plate thickness 1/2 is：Rp0.2：815MPa、Rm：845MPa、A5016.5%、-60
DEG C when longitudinal direction Akv146J, -60 DEG C when horizontal Akv85J.
Above example is only to illustrative and not limiting technical scheme, although reference above-described embodiment is to this
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
In the middle of sharp claimed range.
Claims (10)
1. a kind of economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates, it is characterised in that the steel plate its by following weight hundred
Divide the component composition of content：C：0.13%～0.15%, Si：0.20%～0.40%, Mn：0.90%～1.10%, P≤0.015%, S≤
0.005%, Cr：0.20%～0.40%, Mo：0.15%～0.35%, V：0.020%～0.050%, Nb：0.015%～0.035%, Ti：
0.008%～0.020%, Ni：0.020%～0.040%, Al：0.020%～0.050%, B：0.0008%～0.002%, balance of Fe
With inevitable impurity.
2. economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates according to claim 1, it is characterised in that the Ceq
≤ 0.53, Ceq=C+Mn/6+ (Cr+Mo+V)/5+ (Cu+Ni)/15.
3. economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates according to claim 1 and 2, it is characterised in that：It is described
Steel plate thickness is 60mm～80mm.
4. economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates according to claim 1 and 2, it is characterised in that：It is described
Yield strength >=690MPa at thickness of slab 1/2, tensile strength 770-930MPa of thickness of slab 1/2, the elongation percentage A of thickness of slab 1/250%≥14%；Plate
Thick 1/2-60 DEG C longitudinally, laterally ballistic work >=34 joule.
5. the producer of the economical low-carbon-equivalent high-strength and high-ductility Q690F steel plates being based on described in claim 1-4 any one
Method, it is characterised in that the production method includes smelting continuous casting working procedure, heating process, rolling process and heat treatment step；It is described
Smelt continuous casting working procedure gained continuous casting billet to be made up of the component of following weight percentage：C：0.13%～0.15%, Si：0.20%～
0.40%, Mn：0.90%～1.10%, P≤0.015%, S≤0.005%, Cr：0. 20%～0.40%, Mo：0.15%～0.35%, V：
0.020%～0.050%, Nb：0.015%～0.035%, Ti：0.008%～0.020%, Ni：0.020%～0.040%, Al：
0.020%～0.050%, B：0.0008%～0.002%, balance of Fe and inevitable impurity.
6. production method according to claim 5, it is characterised in that the heating process：1250 DEG C of maximum heating temperature,
1220 DEG C～1240 DEG C of soaking temperature, heating coefficient >=11min/cm, soaking time >=60min.
7. production method according to claim 5, it is characterised in that the rolling process：Rolling adopts controlled rolling work
Skill, 1050 DEG C of a stage start rolling temperature～1100 DEG C, the two-stage start rolling temperature≤850 DEG C, the steel thickness that dries in the air is >=2h, and h is finished product
Steel plate mm of thickness.
8. production method according to claim 5, it is characterised in that the rolling process：On-line cooling is carried out after rolling, is returned
Red temperature is 600 DEG C～700 DEG C, obtains steel plate crude product.
9. the production method according to claim 5-8 any one, it is characterised in that the heat treatment step is using quenching
+ tempering process, hardening media is water.
10. the production method according to claim 5-8 any one, it is characterised in that the heat treatment step is using quenching
Fire+tempering process, hardening heat is 910 ± 10 DEG C, and temperature is 570 ± 20 DEG C, temperature retention time（4-4.5）* t, t is finished product
Steel plate mm of thickness, air cooling finished product steel plate after insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946664.6A CN106636889A (en) | 2016-10-26 | 2016-10-26 | Economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946664.6A CN106636889A (en) | 2016-10-26 | 2016-10-26 | Economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106636889A true CN106636889A (en) | 2017-05-10 |
Family
ID=58821206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610946664.6A Pending CN106636889A (en) | 2016-10-26 | 2016-10-26 | Economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106636889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126848A (en) * | 2020-08-20 | 2020-12-25 | 舞阳钢铁有限责任公司 | High-toughness quenched and tempered Q960 steel plate and production method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556076A (en) * | 2013-11-12 | 2014-02-05 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered high-strength Q690F super-thick steel plate |
-
2016
- 2016-10-26 CN CN201610946664.6A patent/CN106636889A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556076A (en) * | 2013-11-12 | 2014-02-05 | 湖南华菱湘潭钢铁有限公司 | Production method of quenched and tempered high-strength Q690F super-thick steel plate |
Non-Patent Citations (1)
| Title |
|---|
| 曾正明: "《实用钢材手册》", 31 July 2015 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126848A (en) * | 2020-08-20 | 2020-12-25 | 舞阳钢铁有限责任公司 | High-toughness quenched and tempered Q960 steel plate and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110184525B (en) | High-strength Q500GJE quenched and tempered steel plate for building structure and manufacturing method thereof | |
| JP5979338B1 (en) | Thick, high toughness, high strength steel plate with excellent material uniformity and method for manufacturing the same | |
| CN103526111B (en) | Hot-rolled plate band steel with yield strength being 900MPa and preparation method thereof | |
| JP5928654B2 (en) | Thick and high toughness high strength steel sheet and method for producing the same | |
| CN107208212B (en) | Thick-walled high-toughness high-strength steel plate and method for producing same | |
| CN103276312B (en) | High-strength steel plate having extra thickness of 80-120mm and method for producing same from continuous casting billet | |
| CN105543669B (en) | A kind of think gauge and narrow hardness interval wear-resisting steel plate and preparation method thereof | |
| CN104357742B (en) | 420MPa high-thickness hot-rolled steel sheet for ocean engineering and production method thereof | |
| WO2022052335A1 (en) | Thick low-carbon-equivalent high-toughness wear-resistant steel plate and manufacturing method therefor | |
| CN102400043B (en) | Large-thickness steel plate for oceaneering | |
| JPWO2015140846A1 (en) | Thick and high toughness high strength steel sheet and method for producing the same | |
| CN107760998A (en) | Inexpensive quenching and tempering type 690MPa level steel for engineering machinery plates and production method | |
| CN108660377A (en) | The preparation method of seamless steel pipe and seamless steel pipe | |
| CN106399840A (en) | Low-cost and low-yield-ratio hardening and tempering type Q690E steel plate and production method | |
| CN102953000B (en) | Ultrahigh-strength steel plate and manufacturing method thereof | |
| CN107177802A (en) | Large-scale storage tank quenching and tempering, high 12MnNiVR steel plates and production method | |
| CN107746935A (en) | A kind of high-strength abrasion-proof steel plate and its production technology | |
| CN114934156A (en) | Production method of high-strength and high-toughness hot continuous rolling thin steel plate with Brinell hardness of 450HBW | |
| CN110983158B (en) | 550 MPa-grade medium manganese steel plate and manufacturing method thereof | |
| CN106636889A (en) | Economic low-carbon-equivalent high-strength high-toughness Q690F steel sheet and production method thereof | |
| CN101538681A (en) | Method for producing high-strength steel with yield strength of 700MPa level | |
| CN110964978B (en) | Steel plate for engineering machinery and preparation method thereof | |
| CN114231826A (en) | Production method of Q420qE bridge structural steel plate | |
| CN109763072B (en) | Thick high-wear-resistance steel plate and manufacturing method thereof | |
| CN107326279A (en) | Thermo-mechanical rolling type special thick easily welding S460M structural steel and irons and production method |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
|
| WD01 | Invention patent application deemed withdrawn after publication |