CN108411190A - Hydrogen sulfide corrosion resistant sheet metal and its production method - Google Patents
Hydrogen sulfide corrosion resistant sheet metal and its production method Download PDFInfo
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- CN108411190A CN108411190A CN201810171193.5A CN201810171193A CN108411190A CN 108411190 A CN108411190 A CN 108411190A CN 201810171193 A CN201810171193 A CN 201810171193A CN 108411190 A CN108411190 A CN 108411190A
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- 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
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- 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
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- 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
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- 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
Abstract
The invention discloses a kind of hydrogen sulfide corrosion resistant sheet metal and its production methods comprising heating, rolling and heat treatment procedure；The chemical composition and mass percentage of the steel plate be：C 0.16~0.19%, Si 0.20~0.40%, Mn 1.15~1.30%, P≤0.010%, S≤0.005%, Al 0.020~0.050%, surplus are Fe and inevitable impurity.This steel plate is strengthened using C, Mn, and steel plate is enable to have good tissue, mechanical property, hydrogen sulfide corrosion resistance and welding performance；The features such as with consistency height, intensity rank is higher, and 10 DEG C of low-temperature impact toughness are excellent, and hardness is moderate and hydrogen sulfide corrosion resistance can be excellent, disclosure satisfy that the requirement of pressure vessel hydrogen sulfide corrosion resistant steel, has good comprehensive performance and welding performance.The steel of this steel plate is purer, P≤0.010%, S≤0.005%, and intensity hardness is moderate；30 DEG C of low-temperature good toughness, banded structure 0；Steel plate thickness specification limit is 8mm~20mm；Hydrogen sulfide corrosion resistance can be excellent.
Description
Technical field
The invention belongs to metallurgical technology field, especially a kind of hydrogen sulfide corrosion resistant sheet metal and its production method.
Background technology
In recent years, with the fast development of the development of the national economy, for hydrogen sulfide corrosion resistant sheet metal demand increasingly
Prominent, market is increasing for the demand of hydrogen sulfide corrosion resistant sheet metal.Simultaneously because sheet metal banded structure is seriously tight
Ghost image rings hydrogen sulfide corrosion resistance energy, for a long time due to lacking necessary production equipment and technical support, simultaneously because domestic
The mature experience for not producing hydrogen sulfide corrosion resistant sheet metal causes cannot meet the needs of domestic market, seriously constrains
The development of Chinese national economy construction.
Invention content
The technical problem to be solved in the present invention is to provide a kind of high performance hydrogen sulfide corrosion resistant sheet metals；The present invention is also
Provide a kind of production method of hydrogen sulfide corrosion resistant sheet metal.
In order to solve the above technical problems, chemical composition and mass percentage that the present invention is taken are：C 0.16~
0.19%, Si 0.20~0.40%, Mn 1.15~1.30%, P≤0.010%, S≤0.005%, Al 0.020~0.050%, surplus
For Fe and inevitable impurity.
The thickness of steel plate of the present invention is 8mm~20mm.
The mechanism of action of each chemical constituent of steel plate of the present invention and content is：
C：Carbon makes a significant impact the surrender of steel, tensile strength, welding performance.Carbon can significantly improve steel plate by gap solid solution
Intensity, but carbon content is excessively high, and the welding performance and toughness of steel can be influenced, carbon content is too low, reduces the quenching degree of steel.
Si：It is used as reducing agent and deoxidier in steelmaking process, while Si can also play solution strengthening effect, but is more than
When 0.5%, the toughness of steel can be caused to decline, reduce the welding performance of steel.
Mn：Manganese is of low cost, can increase the toughness, intensity and hardness of steel, improve the quenching degree of steel, improve the hot-working of steel
Performance；Manganese amount is excessively high, can weaken the resistance to corrosion of steel, reduces welding performance.
P、S：Under normal circumstances, p and s are all harmful elements in steel, increase the brittleness of steel.Phosphorus makes welding performance become
It is bad, plasticity is reduced, cold-bending property is made to degenerate；Sulphur reduces the ductility and toughness of steel, and crackle is caused in forging and rolling；Therefore
Content of the p and s in steel should be reduced to the greatest extent.
Al：Aluminium is common deoxidier in steel.A small amount of aluminium is added in steel, can crystal grain thinning, improve impact flexibility.Aluminium is also
It is excessively high with inoxidizability and corrosion resistance, influence hot-working character, the welding performance and cutting performance of steel.
The method of the present invention includes heating, rolling and heat treatment procedure；The chemical composition and quality percentage of the steel plate
Content is as described above.
Heating process described in the method for the present invention：1250 DEG C of the maximum heating temperature of steel billet, 1210~1230 DEG C of soaking temperature,
Bringing-up section and soaking zone total time >=11min/cm steel billet thickness.
Rolling process described in the method for the present invention：The start rolling temperature of first stage is 1050~1100 DEG C, finishing temperature 920
~950 DEG C；Single pass rolling reduction is 10%~30%, and it is 30%~50% to add up reduction ratio, and dry in the air steel thickness >=1.5 times finished steel plate plate
It is thick；860~910 DEG C of the start rolling temperature of second stage, finishing temperature are 800~850 DEG C, and single pass rolling reduction is 10%~30%,
Accumulative reduction ratio is 30%~50%.
Heat treatment procedure described in the method for the present invention：Using quenching+tempering technique；Hardening heat is 900~910 DEG C, heat preservation
1.6~1.8min/mm of coefficient, water cooling after heat preservation；Temperature is 680~700 DEG C, and soaking time is 60min~80min.Institute
It states in heat treatment procedure, hardening media is water.
It is using advantageous effect caused by above-mentioned technical proposal：The present invention is strengthened using C, Mn, so that steel plate is had good
Good tissue, mechanical property, hydrogen sulfide corrosion resistance energy and welding performance；With consistency height, intensity rank is higher, -10 DEG C
The features such as low-temperature impact toughness is excellent, and hardness is moderate and hydrogen sulfide corrosion resistance can be excellent, disclosure satisfy that pressure vessel sulfur resistive
Change the requirement of hydrogen-type corrosion steel, there is good comprehensive performance and welding performance.The steel of steel plate of the present invention is purer, and P≤
0.010%, S≤0.005%, intensity hardness are moderate；- 30 DEG C of low-temperature good toughness, banded structure 0；Steel plate thickness specification limit
For 8mm~20mm；Hydrogen sulfide corrosion resistance can be excellent.
The Design of Chemical Composition of the method for the present invention is strengthened using C, Mn, mainly uses rolling appropriate and heat treatment process,
Banded Structure of Steel Plate is 0, and -30 DEG C of impact flexibility are excellent, and steel plate has excellent comprehensive performance, can better meet sulfur resistive
The requirement for changing hydrogen-type corrosion performance, can be widely used for pressure vessel industries, has a extensive future.The method of the present invention is using raising molten steel
Degree of purity reduces sulfur content, carries out the measures such as Ca processing, the heating, rolling and the heat treatment condition that optimize continuous casting billet, can be more preferable
The requirement for meeting pressure vessel hydrogen sulfide corrosion resistant sheet metal；Yield strength >=345MPa of gained high strength steel plate resists
510~640MPa of tensile strength, -30 DEG C of side knock work(>=100J, hardness 130HB~180HB, HIC examine flawless.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is 711 detection faces micrographs of 1 steel plate sample HIC experiments of embodiment；
Fig. 2 is 311 detection faces micrographs of 2 steel plate sample HIC experiments of embodiment；
Fig. 3 is 511 detection faces micrographs of 3 steel plate sample HIC experiments of embodiment；
Fig. 4 is 411 detection faces micrographs of 4 steel plate sample HIC experiments of embodiment；
Fig. 5 is 611 detection faces micrographs of 5 steel plate sample HIC experiments of embodiment；
Fig. 6 is 211 detection faces micrographs of 6 steel plate sample HIC experiments of embodiment.
Specific implementation mode
The production method of this hydrogen sulfide corrosion resistant sheet metal includes smelting, continuous casting, heating, rolling and heat treatment procedure,
Each process technique is as described below：
（1）Smelting procedure：For molten steel first through the smelting of first furnace, feeding LF refining furnace refining flows slag using the quantity of slag is increased with multiple, with
Conducive to de- P, bull ladle VD stoves are vacuum-treated when big packet temperature >=1580 DEG C, feed 3~5kg/t of aluminum steel in refining process into molten steel
Molten steel and Si-Ca line 5~7m/t molten steel, vacuum degree≤66Pa when vacuum processing, the vacuum retention time >=15min, solve steel
The higher phenomenon of water nonmetallic inclusionsin steel content, ensure that the degree of purity of steel.
（2）Continuous casting working procedure：Using continuous casting process, the molten steel after smelting is subjected to continuous casting and obtains continuous casting billet（Steel billet）, continuous casting
Shi Jinhang electromagnetic agitations or slighter compress, reinforcement solidification end is cold by force, and casting speed control is in 0.75~1.05m/min, the degree of superheat 15
~25 DEG C, reduce continuous casting slab segregation as far as possible, steel billet wind sheltering stacking, temperature send steel rolling behind slow cooling >=24 hour.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1250 DEG C of maximum heating temperature, soaking temperature
1210~1230 DEG C of degree, bringing-up section and soaking zone total time >=11min/cm steel billet thickness.
（4）Rolling process：Using two-stage rolling mill practice；First stage is the austenite recrystallization stage, and start rolling temperature is
1050~1100 DEG C, finishing temperature is 920~950 DEG C；Single pass rolling reduction be 10%~30%, add up reduction ratio be 30%~
50%；Dry in the air steel thickness >=1.5 times finished steel plate plate thickness.Second stage is austenite non-recrystallization stage, start rolling temperature 860~910
DEG C, finishing temperature is 800~850 DEG C, and single pass rolling reduction is 10%~30%, and it is 30%~50% to add up reduction ratio, after rolling
To semi-finished product steel plate.
（5）Heat treatment procedure：Using quenching+tempering technique；The cooling medium of quenching be water, hardening heat be 900~
910 DEG C, heat insulating coefficient 1.6~1.8min/mm finished steel plate plate thickness, maximum amount of water water cooling acceleration is cooled to room temperature；Temperature
It it is 680~700 DEG C, soaking time is 60min~80min, and the steel plate is can be obtained after tempering.
Embodiment 1：This hydrogen sulfide corrosion resistant is with sheet metal using following compositions with when production technology.
The composition proportion of this steel plate（wt）：C 0.16%, Si 0.24%, Mn 1.20%, P 0.008%, S 0.003%, Al
0.024%, surplus is Fe and inevitable impurity；Thickness is 8mm.
Production technology：（1）Smelting procedure：Molten steel is first smelted through first furnace, and LF refining furnace refining is sent into, using the increase quantity of slag
With multiple stream slag, bull ladle VD stoves are vacuum-treated when 1590 DEG C of big packet temperature, feed aluminum steel 3.5kg/t in refining process into molten steel
With Si-Ca line 5.5m/t, vacuum degree 66Pa, vacuum retention time 25min when vacuum processing.
（2）Continuous casting working procedure：Electromagnetic agitation or slighter compress are carried out when continuous casting, it is cold by force to reinforce solidification end, casting speed control
0.95m/min, 23 DEG C of the degree of superheat, steel billet wind sheltering stacking, slow cooling 24 hours.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1250 DEG C of maximum heating temperature, soaking temperature
1220 DEG C of degree, total heating time are 11min/mm.
（4）Rolling process：The start rolling temperature that rolls of first stage is 1050 DEG C, and finishing temperature is 920 DEG C, percentage pass reduction
10%, add up reduction ratio 40%；The steel thickness that dries in the air is 150mm.The start rolling temperature of second stage is 880 DEG C, and finishing temperature is 820 DEG C,
Accumulative reduction ratio is 45%, and single pass reduction ratio is 12%.
（5）Heat treatment：Using quenching+tempering technique；The cooling medium of quenching is water, and hardening heat is 900 DEG C, heat preservation
Coefficient 1.8min/mm, roller speed 2m/mim, maximum amount of water water cooling accelerate cooling；Temperature is 690 DEG C, keeps the temperature 70min.
The mechanical property and hydrogen sulfide corrosion resistance energy of hydrogen sulfide corrosion resistant sheet metal obtained by the present embodiment：Yield strength
381MPa, tensile strength 545MPa, -30 DEG C of side knock work(are averaged 250J, and hardness 136~150HB, HIC inspection result is seen below
Table 1 and Fig. 1（Remaining detection faces is identical as 711, saves sketch map）.
Table 1：1 steel plate HIC inspection results of embodiment
Embodiment 2：This hydrogen sulfide corrosion resistant is with sheet metal using following compositions with when production technology.
The composition proportion of this steel plate（wt）：C 0.17%, Si 0.30%, Mn 1.18%, P 0.006%, S 0.003%, Al
0.030%, surplus is Fe and inevitable impurity；Thickness is 10mm.
Production technology：（1）Smelting procedure：Molten steel is first smelted through first furnace, and LF refining furnace refining is sent into, using the increase quantity of slag
With multiple stream slag, bull ladle VD stoves are vacuum-treated when 1585 DEG C of big packet temperature, feed aluminum steel 3.0kg/t in refining process into molten steel
With Si-Ca line 5.0m/t, vacuum degree 65Pa, vacuum retention time 25min when vacuum processing.
（2）Continuous casting working procedure：Electromagnetic agitation or slighter compress are carried out when continuous casting, it is cold by force to reinforce solidification end, casting speed control
0.95m/min, 23 DEG C of the degree of superheat, steel billet wind sheltering stacking, slow cooling 24 hours.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1245 DEG C of maximum heating temperature, soaking temperature
1220 DEG C of degree, total heating time are 11min/mm.
（4）Rolling process：The start rolling temperature that rolls of first stage is 1050 DEG C, and finishing temperature is 930 DEG C, percentage pass reduction
10%, add up reduction ratio 40%；The steel thickness that dries in the air is 140mm.The start rolling temperature of second stage is 890 DEG C, and finishing temperature is 830 DEG C,
Accumulative reduction ratio is 45%, and single pass reduction ratio is 12%.
（5）Heat treatment：Using quenching+tempering technique；The cooling medium of quenching is water, and hardening heat is 900 DEG C, heat preservation
Coefficient 1.7min/mm, roller speed 3m/mim, maximum amount of water water cooling accelerate cooling；Temperature is 695 DEG C, keeps the temperature 75min.
The mechanical property and hydrogen sulfide corrosion resistance energy of hydrogen sulfide corrosion resistant sheet metal obtained by the present embodiment：Yield strength
394MPa, tensile strength 557MPa, -30 DEG C of side knock work(are averaged 260J, and hardness 145~160HB, HIC inspection result is seen below
Table 2 and Fig. 2（Remaining detection faces is identical as 311, saves sketch map）.
Table 2：2 steel plate HIC inspection results of embodiment
Embodiment 3：This hydrogen sulfide corrosion resistant is with sheet metal using following compositions with when production technology.
The composition proportion of this steel plate（wt）：C 0.18%, Si 0.28%, Mn 1.30%, P 0.006%, S 0.003%, Al
0.035%, surplus is Fe and inevitable impurity；Thickness is 12mm.
Production technology：（1）Smelting procedure：Molten steel is first smelted through first furnace, and LF refining furnace refining is sent into, using the increase quantity of slag
With multiple stream slag, bull ladle VD stoves are vacuum-treated when 1600 DEG C of big packet temperature, feed aluminum steel 3.5kg/t in refining process into molten steel
With Si-Ca line 5.3m/t, vacuum degree 65Pa, vacuum retention time 25min when vacuum processing.
（2）Continuous casting working procedure：Electromagnetic agitation or slighter compress are carried out when continuous casting, it is cold by force to reinforce solidification end, casting speed control
0.95m/min, 20 DEG C of the degree of superheat, steel billet wind sheltering stacking, slow cooling 24 hours.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1250 DEG C of maximum heating temperature, soaking temperature
1230 DEG C of degree, total heating time are 11min/mm.
（4）Rolling process：The start rolling temperature that rolls of first stage is 1050 DEG C, percentage pass reduction 10%, finishing temperature 925
DEG C, add up reduction ratio 40%；The steel thickness that dries in the air is 130mm.The start rolling temperature of second stage is 900 DEG C, and finishing temperature is 835 DEG C, is tired out
It is 45% to count reduction ratio, and single pass reduction ratio is 10%.
（5）Heat treatment：Using quenching+tempering technique；The cooling medium of quenching is water, and hardening heat is 910 DEG C, heat preservation
Coefficient 1.8min/mm, roller speed 3m/mim, maximum amount of water water cooling accelerate cooling；Temperature is 700 DEG C, keeps the temperature 80min.
The mechanical property and hydrogen sulfide corrosion resistance energy of hydrogen sulfide corrosion resistant sheet metal obtained by the present embodiment：Yield strength
409MPa, tensile strength 557MPa, -30 DEG C of side knock work(are averaged 230J, and hardness 145~155HB, HIC inspection result is seen below
Table 3 and Fig. 3（Remaining detection faces is identical as 511, saves sketch map）.
Table 3：3 steel plate HIC inspection results of embodiment
Embodiment 4：This hydrogen sulfide corrosion resistant is with sheet metal using following compositions with when production technology.
The composition proportion of this steel plate（wt）：C 0.18%, Si 0.30%, Mn 1.25%, P 0.006%, S 0.003%, Al
0.030%, surplus is Fe and inevitable impurity；Thickness is 15mm.
Production technology：（1）Smelting procedure：Molten steel is first smelted through first furnace, and LF refining furnace refining is sent into, using the increase quantity of slag
With multiple stream slag, bull ladle VD stoves are vacuum-treated when 1610 DEG C of big packet temperature, feed aluminum steel 3.0kg/t in refining process into molten steel
With Si-Ca line 5.0m/t, vacuum degree 65Pa, vacuum retention time 25min when vacuum processing.
（2）Continuous casting working procedure：Electromagnetic agitation or slighter compress are carried out when continuous casting, it is cold by force to reinforce solidification end, casting speed control
0.95m/min, 19 DEG C of the degree of superheat, steel billet wind sheltering stacking, after slow cooling 24 hours.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1235 DEG C of maximum heating temperature, soaking temperature
1230 DEG C of degree, total heating time are 11min/mm.
（4）Rolling process：The start rolling temperature that rolls of first stage is 1050 DEG C, percentage pass reduction 10%, finishing temperature 920
DEG C, add up reduction ratio 40%；The steel thickness that dries in the air is 120mm.The start rolling temperature of second stage is 900 DEG C, and finishing temperature is 830 DEG C, is tired out
It is 45% to count reduction ratio, and single pass reduction ratio is 30%.
（5）Heat treatment：Using quenching+tempering technique；The cooling medium of quenching is water, and hardening heat is 905 DEG C, heat preservation
Coefficient 1.7min/mm, roller speed 3m/mim, maximum amount of water water cooling accelerate cooling；Temperature is 695 DEG C, keeps the temperature 75min.
The mechanical property and hydrogen sulfide corrosion resistance energy of hydrogen sulfide corrosion resistant sheet metal obtained by the present embodiment：Yield strength
398MPa, tensile strength 549MPa, -30 DEG C of side knock work(are averaged 220J, and hardness 137~150HB, HIC inspection result is seen below
Table 4 and Fig. 4（Remaining detection faces is identical as 411, saves sketch map）.
Table 4：4 steel plate HIC inspection results of embodiment
Embodiment 5：This hydrogen sulfide corrosion resistant is with sheet metal using following compositions with when production technology.
The composition proportion of this steel plate（wt）：C 0.19%, Si 0.20%, Mn 1.20%, P 0.010%, S 0.005%, Al
0.050%, surplus is Fe and inevitable impurity；Thickness is 20mm.
Production technology：（1）Smelting procedure：Molten steel is first smelted through first furnace, and LF refining furnace refining is sent into, using the increase quantity of slag
With multiple stream slag, bull ladle VD stoves are vacuum-treated when 1605 DEG C of big packet temperature, feed aluminum steel 5.0kg/t in refining process into molten steel
With Si-Ca line 5.5m/t, vacuum degree 64Pa, vacuum retention time 15min when vacuum processing.
（2）Continuous casting working procedure：Electromagnetic agitation or slighter compress are carried out when continuous casting, it is cold by force to reinforce solidification end, casting speed control
0.75m/min, 15 DEG C of the degree of superheat, steel billet wind sheltering stacking, temperature is sent after slow cooling 30 hours, the 150 DEG C of cleanings of band temperature.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1250 DEG C of maximum heating temperature, soaking temperature
1230 DEG C of degree, total heating time are 11.5min/mm.
（4）Rolling process：The start rolling temperature that rolls of first stage is 1100 DEG C, percentage pass reduction 18%, finishing temperature 950
DEG C, add up reduction ratio 30%；The steel thickness that dries in the air is 30mm.The start rolling temperature of second stage is 910 DEG C, and finishing temperature is 850 DEG C, is tired out
It is 50% to count reduction ratio, and single pass reduction ratio is 20%.
（5）Heat treatment：Using quenching+tempering technique；The cooling medium of quenching is water, and hardening heat is 900 DEG C, heat preservation
Coefficient 1.6min/mm, roller speed 3m/mim, it is 685 DEG C that maximum amount of water water cooling, which accelerates cooling, temperature, keeps the temperature 65min.
The mechanical property and hydrogen sulfide corrosion resistance energy of hydrogen sulfide corrosion resistant sheet metal obtained by the present embodiment：Yield strength
380MPa, 556 MPa of tensile strength, -30 DEG C of side knock work(are averaged 250J, hardness 135HB~140 HB, HIC inspection results
It see the table below 5 and Fig. 5（Remaining detection faces is identical as 611, saves sketch map）.
Table 5：5 steel plate HIC inspection results of embodiment
Embodiment 6：This hydrogen sulfide corrosion resistant is with sheet metal using following compositions with when production technology.
The composition proportion of this steel plate（wt）：C 0.17%, Si 0.40%, Mn 1.15%, P 0.008%, S 0.003%, Al
0.020%, surplus is Fe and inevitable impurity；Thickness is 18mm.
Production technology：（1）Smelting procedure：Molten steel is first smelted through first furnace, and LF refining furnace refining is sent into, using the increase quantity of slag
With multiple stream slag, bull ladle VD stoves are vacuum-treated when 1580 DEG C of big packet temperature, feed aluminum steel 4.0kg/t in refining process into molten steel
With Si-Ca line 7.0m/t, vacuum degree 63Pa, vacuum retention time 22min when vacuum processing.
（2）Continuous casting working procedure：Electromagnetic agitation or slighter compress are carried out when continuous casting, it is cold by force to reinforce solidification end, casting speed control
1.05m/min, 25 DEG C of the degree of superheat, steel billet wind sheltering stacking, temperature is sent after slow cooling 26 hours, the 160 DEG C of cleanings of band temperature.
（3）Heating process：Continuous casting billet is heated in continuous-type furnace, 1245 DEG C of maximum heating temperature, soaking temperature
1210 DEG C of degree, total heating time are 12min/mm.
（4）Rolling process：The start rolling temperature that rolls of first stage is 1080 DEG C, percentage pass reduction 30%, finishing temperature 940
DEG C, add up reduction ratio 50%；The steel thickness that dries in the air is 45mm.The start rolling temperature of second stage is 860 DEG C, and finishing temperature is 800 DEG C, is tired out
It is 30% to count reduction ratio, and single pass reduction ratio is 10%.
（5）Heat treatment：Using quenching+tempering technique；The cooling medium of quenching is water, and hardening heat is 903 DEG C, heat preservation
Coefficient 1.75min/mm, roller speed 10m/mim, maximum amount of water water cooling accelerate cooling；Temperature is 680 DEG C, keeps the temperature 60min.
The mechanical property and hydrogen sulfide corrosion resistance energy of hydrogen sulfide corrosion resistant sheet metal obtained by the present embodiment：Yield strength
386MPa, tensile strength 546MPa, -30 DEG C of side knock work(are averaged 230J, and hardness 140-155HB, HIC inspection result is seen below
Table 6 and Fig. 6（Remaining detection faces is identical as 211, saves sketch map）.
Table 6：6 steel plate HIC inspection results of embodiment
As seen from the above-described embodiment, the steel plate produced using this method is higher with degree of purity, ingredient is uniform, interior solid
The metallurgy of feature, steel is horizontal higher, and performance fully meets the requirement of hydrogen sulfide corrosion resistant sheet metal.
Claims (7)
1. a kind of hydrogen sulfide corrosion resistant sheet metal, which is characterized in that its chemical composition and mass percentage are：C 0.16~
0.19%, Si 0.20~0.40%, Mn 1.15~1.30%, P≤0.010%, S≤0.005%, Al 0.020~0.050%, surplus
For Fe and inevitable impurity.
2. hydrogen sulfide corrosion resistant sheet metal according to claim 1, it is characterised in that：The thickness of the steel plate is 8mm
~20mm.
3. a kind of production method of hydrogen sulfide corrosion resistant sheet metal, it is characterised in that：It includes including at heating, rolling and heat
Science and engineering sequence；The chemical composition and mass percentage of the steel plate be：C 0.16~0.19%, Si 0.20~0.40%, Mn
1.15~1.30%, P≤0.010%, S≤0.005%, Al 0.020~0.050%, surplus are Fe and inevitable impurity.
4. the production method of hydrogen sulfide corrosion resistant sheet metal according to claim 3, which is characterized in that the heater
Sequence：1250 DEG C of the maximum heating temperature of steel billet, 1210~1230 DEG C of soaking temperature, bringing-up section and soaking zone total time >=11min/
Cm steel billet thickness.
5. the production method of hydrogen sulfide corrosion resistant sheet metal according to claim 3, which is characterized in that the rolling work
Sequence：The start rolling temperature of first stage is 1050~1100 DEG C, and finishing temperature is 920~950 DEG C；Single pass rolling reduction be 10%~
30%, it is 30%~50% to add up reduction ratio, and dry in the air steel thickness >=1.5 times finished steel plate plate thickness；The start rolling temperature 860 of second stage~
910 DEG C, finishing temperature is 800~850 DEG C, and single pass rolling reduction is 10%~30%, and it is 30%~50% to add up reduction ratio.
6. the production method of the hydrogen sulfide corrosion resistant sheet metal according to claim 3,4 or 5, which is characterized in that described
Heat treatment procedure：Using quenching+tempering technique；Hardening heat is 900~910 DEG C, 1.6~1.8min/mm of heat insulating coefficient, is protected
Water cooling after temperature；Temperature is 680~700 DEG C, and soaking time is 60min~80min.
7. the production method of hydrogen sulfide corrosion resistant sheet metal according to claim 6, it is characterised in that：The heat treatment
In process, hardening media is water.
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| CN106435396A (en) * | 2016-09-09 | 2017-02-22 | 武汉钢铁股份有限公司 | High temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels and manufacturing method thereof |
| CN107619999A (en) * | 2017-10-18 | 2018-01-23 | 舞阳钢铁有限责任公司 | The hydrogen sulfide corrosion resistant sheet metal and production method of long-time die welding heat treatment |
| CN107739992A (en) * | 2017-09-29 | 2018-02-27 | 舞阳钢铁有限责任公司 | Normalizing type surrenders 345MPa levels weather-resistant steel plate and its production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435396A (en) * | 2016-09-09 | 2017-02-22 | 武汉钢铁股份有限公司 | High temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels and manufacturing method thereof |
| CN107739992A (en) * | 2017-09-29 | 2018-02-27 | 舞阳钢铁有限责任公司 | Normalizing type surrenders 345MPa levels weather-resistant steel plate and its production method |
| CN107619999A (en) * | 2017-10-18 | 2018-01-23 | 舞阳钢铁有限责任公司 | The hydrogen sulfide corrosion resistant sheet metal and production method of long-time die welding heat treatment |
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