CN106498277A - A kind of special thickness high-strength and high-ductility engineering machinery modulation steel plate and production method - Google Patents
A kind of special thickness high-strength and high-ductility engineering machinery modulation steel plate and production method Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 88
- 239000010959 steel Substances 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000003723 Smelting Methods 0.000 claims abstract description 29
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 11
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 11
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- 238000009749 continuous casting Methods 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims description 41
- 230000000171 quenching effect Effects 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 230000014759 maintenance of location Effects 0.000 claims description 20
- 238000007670 refining Methods 0.000 claims description 18
- 238000005496 tempering Methods 0.000 claims description 15
- 238000002791 soaking Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 10
- 238000001953 recrystallisation Methods 0.000 claims description 10
- 229910004709 CaSi Inorganic materials 0.000 claims description 8
- 239000012043 crude product Substances 0.000 claims description 8
- 235000013399 edible fruits Nutrition 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 238000005266 casting Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- 238000010583 slow cooling Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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Abstract
The invention discloses a kind of special thickness high-strength and high-ductility engineering machinery is grouped into by the group of following weight percentage with steel plate and production method, steel plate is modulated：C：0.15 0.19%, Si：0.20 0.50%, Mn：0.90 1.10%, P≤0.015%, S≤0.005%, Cr：1.00 1.20%, Mo：0.40 0.70%, Ni：1.40 1.50%, Al：0.020 0.050%, B：0.001 0.003%, Nb：0.020 0.040%, V：0.040 0.060%, Ti：0.010 0.020%, balance of Fe and inevitable impurity.Production process includes smelting procedure, continuous casting working procedure, heating process, rolling process and heat treatment step.Spy's thickness high-strength and high-ductility structure of the present invention is modulated steel plate maximum gauge and can reach 260mm, with low-temperature impact toughness at moderate strength, thickness of slab 1/4 excellent the characteristics of, have broad application prospects.
Description
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of special thickness high-strength and high-ductility engineering machinery with modulation steel plate and
Production method.
Background technology
Q690E (F) is widely used in large excavator, truck crane, crawler crane as the important kind of steel for engineering machinery
In production etc. the main components of engineering machinery.The maximum of China's standard GB/T/T 16270-2009 defineds is thick at present
Spend for 150mm.As engineering machinery is to maximization, heavy-duty development, the performances such as the thickness of Q690E (F) steel plate, impact are proposed
Requirements at the higher level.Under the conditions of background technology, Wuyang Iron ＆ Steel Co., Ltd. responds actively, and is developed based on GB/T
The special thickness high-strength and high-ductility engineering machinery hardened and tempered steel plate Q690F of 16270-2009 standards.
Content of the invention
The technical problem to be solved in the present invention is to provide that a kind of maximum gauge 260mm, obdurability be excellent, low-temperature impact toughness
Good spy's thickness high-strength and high-ductility engineering machinery hardened and tempered steel plate；Present invention also offers a kind of special thickness high-strength and high-ductility engineering machine
The production method of tool hardened and tempered steel plate.
For solving above-mentioned technical problem, the present invention adopts following technical proposals：A kind of special thickness high-strength and high-ductility engineering machinery
With steel plate is modulated, the steel plate is grouped into by the group of following weight percentage：C：0.15-0.19%, Si：0.20-0.50%,
Mn：0.90-1.10%, P≤0.015%, S≤0.005%, Cr：1.00-1.20%, Mo：0.40-0.70%, Ni：1.40-1.50%,
Al：0.020-0.050%, B：0.001-0.003%, Nb：0.020-0.040%, V：0.040-0.060%, Ti：0.010-
0.020%, balance of Fe and inevitable impurity.
Steel plate maximum gauge of the present invention is 260mm.
Steel plate yield strength >=650MPa of the present invention；Tensile strength is 710-900MPa；Elongation percentage A50%≥14%；-
60 DEG C of impact of collision work(>=47 joule.
Another object of the present invention is to provide the production that a kind of above-mentioned special thickness high-strength and high-ductility engineering machinery modulates steel plate
Method, the Plate Production operation include smelting procedure, continuous casting working procedure, heating process, rolling process and heat treatment step；Described
Smelting procedure gained steel ingot is grouped into by the group of following weight percent：C：0.15-0.19%, Si：0.20-0.50%, Mn：
0.90-1.10%, P≤0.015%, S≤0.005%, Cr：1.00-1.20%, Mo：0.40-0.70%, Ni：1.40-1.50%, Al：
0.020-0.050%, B：0.001-0.003%, Nb：0.020-0.040%, V：0.040-0.060%, Ti：0.010-0.020%, remaining
Measure as Fe and inevitable impurity；The heat treatment step adopts quenching+quenching+tempering technique, and hardening media is water.
Rolling process of the present invention adopts high temperature re-crystallization controlled rolling technique.
1260 DEG C of heating process maximum heating temperature of the present invention, 1180～1220 DEG C of soaking temperature, total heat time
24～32 hours, soaking time >=5h.
Rolling process of the present invention：Rolling adopts high temperature re-crystallization controlled rolling technique, start rolling temperature 1000～1050
DEG C, low speed heavy reduction rolling, single pass rolling reduction be 10～20%, 940 ± 20 DEG C of finishing temperature, add up reduction ratio be 65～
80%, obtain steel plate crude product.
Stacking operation of the present invention：The stacking of wind sheltering in time, 650～680 DEG C of stacking temperature, stacking time 72-86 after rolling
Hour.
Heat treatment step of the present invention：Primary quenching：Hardening heat：910 ± 10 DEG C, steel plate enters water time control 60
Between～70min；Secondary quenching：Hardening heat：880 ± 10 DEG C, steel plate enters water time control between 70～90min；Tempering：
Between 640～660 DEG C, 4.0～4.5min/mm of temperature retention time obtains finished steel plate to temperature.
Smelting molding refining operation of the present invention：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and liquid steel temperature reaches
Or VD stove Fruit storages are proceeded to more than 1610 DEG C, CaSi blocks >=1kg/t is added before VD, change inclusion morphology.
It is using the beneficial effect produced by above-mentioned technical proposal：Spy's thickness high-strength and high-ductility engineering machinery of the present invention is used
Hardened and tempered steel plate yield strength >=650MPa；Tensile strength is 710-900MPa；Elongation percentage A50%≥14%；- 60 DEG C of impact of collision work(
>=47 joules.The steel plate meet domestic and international big machinery industry for big thickness, low temp operation, high-strength tenacity demand, steel
The mechanical property of plate is uniform, and template is good.
Specific embodiment
Special thickness high-strength and high-ductility engineering machinery of the invention is as follows with modulation Plate Production operation：
1）Smelt：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and liquid steel temperature meets or exceeds 1610 DEG C and proceeds to VD stoves
Fruit storage, adds CaSi blocks >=1kg/t before VD（T units are ton）Change inclusion morphology, it is ensured that group is divided in molten steel：
C：0.15-0.19%, Si：0.20-0.50%, Mn：0.90-1.10%, P≤0.015%, S≤0.005%, Cr：1.00-1.20%,
Mo：0.40-0.70%, Ni：1.40-1.50%, Al：0.020-0.050%, B：0.001-0.003%, Nb：0.020-0.040%, V：
0.040-0.060%, Ti：0.010-0.020%, balance of Fe and inevitable impurity.
2）Molding：Using large-scale cast slab（Minimum thickness 780mm）Production, using molding casting technology, pouring technology is pressed
The related molding cast regulation of Wugang is executed.
3）Heating：1260 DEG C of maximum heating temperature, 1180～1220 DEG C of soaking temperature, 24～32 hours total heat times,
Soaking time >=5h.
4）Rolling：Rolling adopts high temperature re-crystallization controlled rolling technique, 1000～1050 DEG C of start rolling temperature, the big pressure of low speed
Amount rolling, single pass rolling reduction are 10%～20%, 940 DEG C ± 20 DEG C of finishing temperature, and it is 65%～80% to add up reduction ratio, obtains
Steel plate crude product.
5）Thermal reactor pile：The stacking of wind sheltering in time, 650 DEG C～680 DEG C of stacking temperature, -86 hours 72 hours stacking time after rolling.
6）Heat treatment
Primary quenching：Hardening heat：910 DEG C ± 10 DEG C, steel plate enters water time control between 60min～70min.
Secondary quenching：Hardening heat：880 DEG C ± 10 DEG C, steel plate enters water time control between 70min～90min.
Tempering：Between 640 DEG C～660 DEG C, temperature retention time 4.0min/mm～4.5min/mm obtains finished product to temperature
Steel plate.
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
The thickness of this steel plate is 260mm, and chemical composition is grouped into by the group of following weight percentage：C：0.19%, Si：
0.48%, Mn：1.09%, P：0.014%, S：0.005%, Cr：1.18%, Mo：0.68%, Ni：1.49%, Al：0.048%, B：
0.0027%, Nb：0.038, V：0.058, Ti：0.019%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting molding operations, heating process, rolling process, heat treatment step, each operation
Step is as follows：
1）Smelting procedure：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and depth deoxidation, desulfurization, adjustment molten steel composition reach
Arrive target call.Liquid steel temperature reaches（1650±10）VD stove Fruit storages are proceeded to after DEG C, add CaSi block 1kg/ before VD
T, changes inclusion morphology.
2）Continuous casting working procedure：Using inert gas shielding pour into a mould, by smelting after molten steel pour into Large Flat by set technique
Ingot casting.
3）Heating process：1250 DEG C of heating-up temperature, 1210 DEG C of soaking temperature total 31 hours heat times, temperature retention time 7 is little
When.
4）Rolling：Using high temperature re-crystallization controlled rolling technique, 1040 DEG C of start rolling temperature, low speed heavy reduction rolls for rolling
System, single pass rolling reduction is 10%, 955 DEG C of finishing temperature, and it is 70% to add up reduction ratio, obtains steel plate crude product.
5）Roll rear stacking slow cooling, 650 DEG C of stacking temperature, 82 hours stacking time.
6）Heat treatment step：Steel plate is obtained described quenching and tempering, high plate through quenching and temper twice；Wherein,
Primary quenching temperature is 910 DEG C, and hardening media is water, enters the water time for 65 minutes；Secondary quenching temperature is 880 DEG C, and quenching is situated between
Matter is water, enters the water time for 80 minutes；Temperature is 655 DEG C, and temperature retention time is 4.4min/mm, air cooling of coming out of the stove.
The mechanical property of this quenching and tempering, high plate is：Rp0.2：680MPa、Rm：830MPa、A50：15.0%th, -60 DEG C when longitudinal direction
Akv207J.
Embodiment 2
The thickness of this steel plate is 260mm, and chemical composition is grouped into by the group of following weight percentage：C：0.18%, Si：
0.50%, Mn：1.10%, P：0.015%, S：0.004%, Cr：1.20%, Mo：0.70%, Ni：1.50%, Al：0.050%, B：
0.003%, Nb：0.040%, V：0.060%, Ti：0.020%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting molding operations, heating process, rolling process, heat treatment step, each operation
Step is as follows：
1）Smelting procedure：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and depth deoxidation, desulfurization, adjustment molten steel composition reach
Arrive target call.Liquid steel temperature reaches（1650±10）VD stove Fruit storages are proceeded to after DEG C, add CaSi block 2kg/ before VD
T, changes inclusion morphology.
2）Continuous casting working procedure：Using inert gas shielding pour into a mould, by smelting after molten steel pour into Large Flat by set technique
Ingot casting.
3）Heating process：1260 DEG C of heating-up temperature, 1220 DEG C of soaking temperature total 24 hours heat times, temperature retention time 5 is little
When.
4）Rolling：Using high temperature re-crystallization controlled rolling technique, 1050 DEG C of start rolling temperature, low speed heavy reduction rolls for rolling
System, single pass rolling reduction is 20%, 960 DEG C of finishing temperature, and it is 80% to add up reduction ratio, obtains steel plate crude product.
5）Roll rear stacking slow cooling, 660 DEG C of stacking temperature, 72 hours stacking time.
6）Heat treatment step：Steel plate is obtained described quenching and tempering, high plate through quenching and temper twice；Wherein,
Primary quenching temperature is 920 DEG C, and hardening media is water, enters the water time for 70 minutes；Secondary quenching temperature is 890 DEG C, and quenching is situated between
Matter is water, enters the water time for 90 minutes；Temperature is 640 DEG C, and temperature retention time is 4.5min/mm, air cooling of coming out of the stove.
The mechanical property of this quenching and tempering, high plate is：Rp0.2：690MPa、Rm：791MPa、A50：18%th, -60 DEG C when longitudinal direction
Akv165J.
Embodiment 3
The thickness of this steel plate is 260mm, and chemical composition is grouped into by the group of following weight percentage：C：0.15%, Si：
0.20%, Mn：1.0%, P：0.010%, S：0.003%, Cr：1.10%, Mo：0.53%, Ni：1.40%, Al：0.037%, B：
0.001%, Nb：0.028%, V：0.060%, Ti：0.019%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting molding operations, heating process, rolling process, heat treatment step, each operation
Step is as follows：
1）Smelting procedure：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and depth deoxidation, desulfurization, adjustment molten steel composition reach
Arrive target call.Liquid steel temperature reaches（1650±10）VD stove Fruit storages are proceeded to after DEG C, add CaSi block 4kg/ before VD
T, changes inclusion morphology.
2）Continuous casting working procedure：Using inert gas shielding pour into a mould, by smelting after molten steel pour into Large Flat by set technique
Ingot casting.
3）Heating process：1250 DEG C of heating-up temperature, 1180 DEG C of soaking temperature total 32 hours heat times, temperature retention time 8 is little
When.
4）Rolling：Using high temperature re-crystallization controlled rolling technique, 1000 DEG C of start rolling temperature, low speed heavy reduction rolls for rolling
System, single pass rolling reduction is 15%, 940 DEG C of finishing temperature, and it is 75% to add up reduction ratio, obtains steel plate crude product.
5）Roll rear stacking slow cooling, 680 DEG C of stacking temperature, 86 hours stacking time.
6）Heat treatment step：Steel plate is obtained described quenching and tempering, high plate through quenching and temper twice；Wherein,
Primary quenching temperature is 900 DEG C, and hardening media is water, enters the water time for 60 minutes；Secondary quenching temperature is 870 DEG C, and quenching is situated between
Matter is water, enters the water time for 70 minutes；Temperature is 660 DEG C, and temperature retention time is 4.0min/mm, air cooling of coming out of the stove.
The mechanical property of this quenching and tempering, high plate is：Rp0.2：670MPa、Rm：810MPa、A50：18%th, -60 DEG C when longitudinal direction
Akv172J.
Embodiment 4
The thickness of this steel plate is 220mm, and chemical composition is grouped into by the group of following weight percentage：C：0.16%, Si：
0.42%, Mn：0.90%, P：0.012%, S：0.002%, Cr：1.00%, Mo：0.50%, Ni：1.41%, Al：0.030%, B：
0.002%, Nb：0.033%, V：0.050%, Ti：0.016%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting molding operations, heating process, rolling process, heat treatment step, each operation
Step is as follows：
1）Smelting procedure：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and depth deoxidation, desulfurization, adjustment molten steel composition reach
Arrive target call.Liquid steel temperature reaches（1650±10）VD stove Fruit storages are proceeded to after DEG C, add CaSi block 5kg/ before VD
T, changes inclusion morphology.
2）Continuous casting working procedure：Using inert gas shielding pour into a mould, by smelting after molten steel pour into Large Flat by set technique
Ingot casting.
3）Heating process：1260 DEG C of heating-up temperature, 1190 DEG C of soaking temperature total 30 hours heat times, temperature retention time 7 is little
When.
4）Rolling：Using high temperature re-crystallization controlled rolling technique, 1035 DEG C of start rolling temperature, low speed heavy reduction rolls for rolling
System, single pass rolling reduction is 12%, 955 DEG C of finishing temperature, and it is 65% to add up reduction ratio, obtains steel plate crude product.
5）Roll rear stacking slow cooling, 670 DEG C of stacking temperature, 78 hours stacking time.
6）Heat treatment step：Steel plate is obtained described quenching and tempering, high plate through quenching and temper twice；Wherein,
Primary quenching temperature is 915 DEG C, and hardening media is water, enters the water time for 68 minutes；Secondary quenching temperature is 885 DEG C, and quenching is situated between
Matter is water, enters the water time for 85 minutes；Temperature is 645 DEG C, and temperature retention time is 4.1min/mm, air cooling of coming out of the stove.
The mechanical property of this quenching and tempering, high plate is：Rp0.2：701MPa、Rm：823MPa、A50：16%th, -60 DEG C when longitudinal direction
Akv156J.
Embodiment 5
The thickness of this steel plate is 200mm, and chemical composition is grouped into by the group of following weight percentage：C：0.17%, Si：
0.30%, Mn：0.98%, P：0.007%, S：0.003%, Cr：1.12%, Mo：0.40%, Ni：1.43%, Al：0.020%, B：
0.001%, Nb：0.020%, V：0.044%, Ti：0.010%, balance of Fe and inevitable impurity.
The production method of this steel plate includes smelting molding operations, heating process, rolling process, heat treatment step, each operation
Step is as follows：
1）Smelting procedure：Molten steel sends into LF refining furnace refining first through electric furnace smelting, and depth deoxidation, desulfurization, adjustment molten steel composition reach
Arrive target call.Liquid steel temperature reaches（1650±10）VD stove Fruit storages are proceeded to after DEG C, add CaSi block 3kg/ before VD
T, changes inclusion morphology.
2）Continuous casting working procedure：Using inert gas shielding pour into a mould, by smelting after molten steel pour into Large Flat by set technique
Ingot casting.
3）Heating process：1250 DEG C of heating-up temperature, 1200 DEG C of soaking temperature total 28 hours heat times, temperature retention time 6 is little
When.
4）Rolling：Using high temperature re-crystallization controlled rolling technique, 1020 DEG C of start rolling temperature, low speed heavy reduction rolls for rolling
System, single pass rolling reduction is 18%, 955 DEG C of finishing temperature, and it is 72% to add up reduction ratio, obtains steel plate crude product.
5）Roll rear stacking slow cooling, 665 DEG C of stacking temperature, 82 hours stacking time.
6）Heat treatment step：Steel plate is obtained described quenching and tempering, high plate through quenching and temper twice；Wherein,
Primary quenching temperature is 905 DEG C, and hardening media is water, enters the water time for 62 minutes；Secondary quenching temperature is 875 DEG C, and quenching is situated between
Matter is water, enters the water time for 85 minutes；Temperature is 650 DEG C, and temperature retention time is 4.3min/mm, air cooling of coming out of the stove.
The mechanical property of this quenching and tempering, high plate is：Rp0.2：678MPa、Rm：808MPa、A50：17%th, -60 DEG C when longitudinal direction
Akv197J.
Above example is only in order to illustrative and not limiting technical scheme, although reference above-described embodiment is to this
Bright 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, its all should cover the power in the present invention
In the middle of sharp claimed range.
Claims (10)
1. a kind of special thickness high-strength and high-ductility engineering machinery is used and modulates steel plate, it is characterised in that the steel plate is by following weight percent
The group of content is grouped into：C：0.15-0.19%, Si：0.20-0.50%, Mn：0.90-1.10%, P≤0.015%, S≤0.005%,
Cr：1.00-1.20%, Mo：0.40-0.70%, Ni：1.40-1.50%, Al：0.020-0.050%, B：0.001-0.003%, Nb：
0.020-0.040%, V：0.040-0.060%, Ti：0.010-0.020%, balance of Fe and inevitable impurity.
2. a kind of special thickness high-strength and high-ductility structure according to claim 1 is used and modulates steel plate, it is characterised in that the steel plate
Maximum gauge is 260mm.
3. a kind of special thickness high-strength and high-ductility structure according to claim 1 is used and modulates steel plate, it is characterised in that the steel plate
Yield strength >=650MPa；Tensile strength is 710-900MPa；Elongation percentage A50%≥14%；- 60 DEG C of impact of collision work(>=47 joule.
4. life of a kind of a kind of special thickness high-strength and high-ductility engineering machinery as described in claim 1-3 any one with modulation steel plate
Product method, it is characterised in that the Plate Production operation includes smelting procedure, continuous casting working procedure, heating process, rolling process and heat
Treatment process；The smelting procedure gained steel ingot is grouped into by the group of following weight percent：C：0.15-0.19%, Si：
0.20-0.50%, Mn：0.90-1.10%, P≤0.015%, S≤0.005%, Cr：1.00-1.20%, Mo：0.40-0.70%, Ni：
1.40-1.50%, Al：0.020-0.050%, B：0.001-0.003%, Nb：0.020-0.040%, V：0.040-0.060%, Ti：
0.010-0.020%, balance of Fe and inevitable impurity；The heat treatment step adopts quenching+quenching+tempering technique, quenches
Fiery medium is water.
5. production method according to claim 4, it is characterised in that the rolling process is rolled using high temperature re-crystallization control
Technique processed.
6. the production method according to claim 4 or 5, it is characterised in that the heating process maximum heating temperature 1260
DEG C, 1180～1220 DEG C of soaking temperature, 24～32 hours total heat times, soaking time >=5h.
7. production method according to claim 4, it is characterised in that the rolling process：Rolling adopts high temperature re-crystallization
Controlled rolling technique, 1000～1050 DEG C of start rolling temperature, low speed heavy reduction rolling, single pass rolling reduction are 10～20%, finish to gauge
940 ± 20 DEG C of temperature, it is 65～80% to add up reduction ratio, obtains steel plate crude product.
8. the production method according to claim 4 or 5, it is characterised in that the stacking operation：The heap of wind sheltering in time after rolling
Pile, 650～680 DEG C of stacking temperature, stacking time 72-86 hours.
9. the production method according to claim 4 or 5, it is characterised in that the heat treatment step：Primary quenching：Quenching
Temperature：910 ± 10 DEG C, steel plate enters water time control between 60～70min；Secondary quenching：Hardening heat：880 ± 10 DEG C, steel
Plate enters water time control between 70～90min；Tempering：Temperature between 640～660 DEG C, temperature retention time 4.0～
4.5min/mm, obtains finished steel plate.
10. the production method according to claim 4 or 5, it is characterised in that the smelting molding refining operation：Molten steel is first through electricity
Stove is smelted, and sends into LF refining furnace refining, and liquid steel temperature meets or exceeds 1610 DEG C and proceeds to VD stove Fruit storages, adds before VD
CaSi blocks >=1kg/t, change inclusion morphology.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904488A (en) * | 2017-11-06 | 2018-04-13 | 江阴兴澄特种钢铁有限公司 | The anti-lamellar tearing Q550 steel plates of the special thickness high-strength and high ductility of one kind and its manufacture method |
| CN107988565A (en) * | 2017-11-28 | 2018-05-04 | 钢铁研究总院 | A kind of high toughness high hardenability high speed axle steel and its heat treatment method |
| CN111074169A (en) * | 2019-12-25 | 2020-04-28 | 舞阳钢铁有限责任公司 | Bainite ultrahigh-strength wear-resistant steel plate and production method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709432A (en) * | 2009-12-26 | 2010-05-19 | 舞阳钢铁有限责任公司 | Steel for large-thickness hardening and tampering ocean platform and production method thereof |
| CN102876997A (en) * | 2012-09-11 | 2013-01-16 | 舞阳钢铁有限责任公司 | Easy-welding tempering high-strength steel plate for ocean platform and production method thereof |
| CN103451562A (en) * | 2013-08-29 | 2013-12-18 | 舞阳钢铁有限责任公司 | Quenched large-thickness easy-to-weld Z-direction high-strength steel plate for water and electricity and production method thereof |
| CN104498837A (en) * | 2014-12-01 | 2015-04-08 | 舞阳钢铁有限责任公司 | Large-thickness quenched and tempered steel sheet having yield strength greater than 890Mpa and production method thereof |
-
2016
- 2016-09-20 CN CN201610833893.7A patent/CN106498277B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709432A (en) * | 2009-12-26 | 2010-05-19 | 舞阳钢铁有限责任公司 | Steel for large-thickness hardening and tampering ocean platform and production method thereof |
| CN102876997A (en) * | 2012-09-11 | 2013-01-16 | 舞阳钢铁有限责任公司 | Easy-welding tempering high-strength steel plate for ocean platform and production method thereof |
| CN103451562A (en) * | 2013-08-29 | 2013-12-18 | 舞阳钢铁有限责任公司 | Quenched large-thickness easy-to-weld Z-direction high-strength steel plate for water and electricity and production method thereof |
| CN104498837A (en) * | 2014-12-01 | 2015-04-08 | 舞阳钢铁有限责任公司 | Large-thickness quenched and tempered steel sheet having yield strength greater than 890Mpa and production method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904488A (en) * | 2017-11-06 | 2018-04-13 | 江阴兴澄特种钢铁有限公司 | The anti-lamellar tearing Q550 steel plates of the special thickness high-strength and high ductility of one kind and its manufacture method |
| CN107988565A (en) * | 2017-11-28 | 2018-05-04 | 钢铁研究总院 | A kind of high toughness high hardenability high speed axle steel and its heat treatment method |
| CN107988565B (en) * | 2017-11-28 | 2019-09-27 | 钢铁研究总院 | A kind of high toughness high hardenability high speed axle steel and its heat treatment method |
| CN111074169A (en) * | 2019-12-25 | 2020-04-28 | 舞阳钢铁有限责任公司 | Bainite ultrahigh-strength wear-resistant steel plate and production method thereof |
| CN111074169B (en) * | 2019-12-25 | 2021-08-24 | 舞阳钢铁有限责任公司 | Bainite ultrahigh-strength wear-resistant steel plate and production method thereof |
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