CN110252809A - The method of chrome ferritic stainless steel rough surface band in reduction - Google Patents
The method of chrome ferritic stainless steel rough surface band in reduction Download PDFInfo
- Publication number
- CN110252809A CN110252809A CN201910586192.1A CN201910586192A CN110252809A CN 110252809 A CN110252809 A CN 110252809A CN 201910586192 A CN201910586192 A CN 201910586192A CN 110252809 A CN110252809 A CN 110252809A
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- stainless steel
- temperature
- ferritic stainless
- rough surface
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 45
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 238000005096 rolling process Methods 0.000 claims abstract description 24
- 238000002791 soaking Methods 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000567 combustion gas Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 230000007547 defect Effects 0.000 description 10
- 238000009749 continuous casting Methods 0.000 description 9
- 239000010935 stainless steel Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000003801 milling Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
Abstract
The invention belongs to steel rolling field, it is related to a kind of method of chrome ferritic stainless steel rough surface band in reduction.The method of chrome ferritic stainless steel rough surface band successively includes heating, super-pressure de-scaling, roughing, essence bundle in reduction of the invention；Wherein, when natural temperature is less than 20 DEG C, the bringing-up section furnace temperature of the heating is 1150-1200 DEG C, soaking zone furnace temperature is 1200-1250 DEG C；When natural temperature is at 20 DEG C or more, bringing-up section furnace temperature is 1100-1160 DEG C, soaking zone furnace temperature is 1150-1200 DEG C.The present invention reduces ferritic stainless steel rough surface bands, realize chrome ferritic stainless steel batch steady production.
Description
Technical field
The invention belongs to steel rolling field, it is related to a kind of method of chrome ferritic stainless steel rough surface band in reduction.
Background technique
Middle chrome ferritic stainless steel generally refers to the stainless steel of chromium content 16%-18%, nickel content≤0.60%.It is producing
In the process, such stainless steel surface often generates rough surface band defect, is embodied within away from steel edge portion 300mm
The band-like defect being discontinuously distributed.Such defect, which passes through, seriously affects product quality generation.Therefore, it is necessary to find a kind of reduction strip
The method of rough surface band.
Summary of the invention
The purpose of the present invention is in view of the drawbacks of the prior art, by theory analysis and production practices, provide one kind and subtract
The method of chrome ferritic stainless steel rough surface band in few.
Specifically, in reduction of the invention chrome ferritic stainless steel rough surface band method, successively include heating, superelevation
De-scaling, roughing, essence is pressed to prick；Wherein, when natural temperature is less than 20 DEG C, the bringing-up section furnace temperature of the heating is 1150-1200
DEG C, soaking zone furnace temperature be 1200-1250 DEG C；When natural temperature is at 20 DEG C or more, bringing-up section furnace temperature be 1100-1160 DEG C,
Soaking zone furnace temperature is 1150-1200 DEG C.
Preferably, the heating is completed in heating furnace, including heat-recovery section, preheating section, the first bringing-up section, the second heating
Section and soaking zone.
Preferably, the furnace temperature of the heat-recovery section is 600-700 DEG C of heating 30-70min；The furnace temperature of the preheating section is
900-1000 DEG C of heating 30-60min；The furnace temperature of first bringing-up section is 1150-1200 DEG C of heating 30-50min；Work as nature
When temperature is less than 20 DEG C, the second bringing-up section furnace temperature is 1150-1200 DEG C of heating 30-60min, and the soaking zone furnace temperature is
1200-1250 DEG C of heating 40-60min；When natural temperature is at 20 DEG C or more, the second bringing-up section furnace temperature is 1100-
1160 DEG C of heating 30-60min, the soaking zone furnace temperature are 1150-1200 DEG C of heating 40-60min.
Preferably, before the heating, further include the steps that carrying out slab reconditioning of having one's face covered with, the reconditioning of the reconditioning of having one's face covered with
Rate≤3.5%；Oxygen content≤3% in the combustion gas of the heating furnace.
Preferably, in the operation of rolling of the roughing, when finished product is with a thickness of≤3.5mm, control intermediate base with a thickness of
30-34mm；When finished product is with a thickness of 3.5-15mm, control intermediate base with a thickness of 34-40mm.
Preferably, the tandem mill that the essence is pricked includes 7 racks, and the rolling deformation rate of 1-7 rack is 40-45%, 35-
40%, 34-39%, 23-28%, 20-25%, 13-18%, 10-15%.
Preferably, when natural temperature is lower than 20 DEG C, the outlet temperature of the roughing is 1050-1150 DEG C, works as nature
For boundary's temperature at 20 DEG C or more, the outlet temperature of the roughing is 950-1050 DEG C；The outlet temperature that the essence is pricked is 800-950
DEG C, wherein the roughing and the finishing stands do not use heat-preserving equipment.
Preferably, the de-scaling pressure of the super-pressure de-scaling is 20-45MPa, and the de-scaling passage of the super-pressure de-scaling is 1
It is secondary.
Preferably, chromium content is 16-18%, nickel content≤0.6% in the middle chrome ferritic stainless steel.
Technical solution of the present invention have it is following the utility model has the advantages that
The method of chrome ferritic stainless steel rough surface band in reduction of the invention, by theory analysis and production practices,
Heating furnace and rolling mill practice are optimized, specifically: to furnace temperature of heating furnace, combustion gas quality, workpiece thickness, rolling load
Equal technological parameters are adjusted, and are not only reduced production cost, are improved production efficiency, also effectively reduce ferritic stainless steel
Rough surface band realizes the purpose of middle chrome ferritic stainless steel batch steady production.
Specific embodiment
In order to fully understand the purpose of the present invention, feature and effect, by following specific embodiments, the present invention is made detailed
It describes in detail bright.For process of the invention in addition to following the description, remaining is all made of the conventional method or device of this field.Following nouns
Term is unless otherwise stated, all have the normally understood meaning of those skilled in the art.
The method of chrome ferritic stainless steel rough surface band in reduction of the invention, by theory analysis and production practices,
To causing middle ferrochrome element stainless steel surface rough zone Producing reason to carry out detailed analysis, optimizes heating furnace and rolling mill practice, adjust
Whole combustion gas quality, workpiece thickness, rolling load etc. achieve the purpose that chrome ferritic stainless steel rough surface band in reduction.
Specifically, in a kind of reduction of the invention chrome ferritic stainless steel rough surface band method, successively include heating,
Super-pressure de-scaling, roughing, essence are pricked；Wherein, when natural temperature is less than 20 DEG C, the bringing-up section furnace temperature of the heating is 1150-
1200 DEG C, soaking zone furnace temperature be 1200-1250 DEG C；When natural temperature is at 20 DEG C or more, bringing-up section furnace temperature is 1100-1160
DEG C, soaking zone furnace temperature be 1150-1200 DEG C.The present invention controls heating temperature according to the temperature of nature, it is possible to reduce material rolls
The temperature drop of process processed guarantees that belt steel surface compared with low-intensity and hardness, mitigates the damage to roll.
To improve production efficiency, mitigate steel strip surface and wipe and scratch, production process does not come into operation Coil Box, therefore raising can be used
The mode of heating furnace heating temperature reduces operation of rolling temperature drop.The heating is completed in heating furnace, including heat-recovery section, preheating
Section, the first bringing-up section, the second bringing-up section and soaking zone, wherein the furnace temperature of the heat-recovery section is that 600-700 heats 30-
70min；The furnace temperature of the preheating section is 900-1000 DEG C of heating 30-60min；The furnace temperature of first bringing-up section is 1150-
1200 DEG C of heating 30-50min；When natural temperature is less than 20 DEG C, the second bringing-up section furnace temperature is 1150-1200 DEG C of heating
30-60min, the soaking zone furnace temperature are 1200-1250 DEG C of heating 40-60min；When natural temperature is at 20 DEG C or more, institute
Stating the second bringing-up section furnace temperature is 1100-1160 DEG C of heating 30-60min, and the soaking zone furnace temperature is 1150-1200 DEG C of heating 40-
60min。
Preferably, the heating furnace is walking beam furnace.It in other embodiments, can also be using other types
Heating furnace.
Preferably, oxygen content≤3% in the combustion gas of the heating furnace is prevented for mitigating the degree of oxidation on continuous casting billet surface
The generation for the defects of major structure is pressed at iron scale.
Preferably, in some embodiments, chrome ferritic stainless steel surface is thick in reduction of the invention before the heating
The method of rough band further includes the steps that the slab of Surface Quality difference carries out reconditioning of having one's face covered with, the reconditioning rate of the reconditioning of having one's face covered with≤
3.5%, wherein when carrying out reconditioning, do not allow only to carry out edge reconditioning.It is furthermore preferred that slab good for surface, not into
Row reconditioning is directly circulated to subsequent processing.The present invention not only carries out side by the reconditioning that have one's face covered with of the slab of Surface Quality difference
Portion's reconditioning, edge fault caused by can eliminating because of reconditioning unevenly.
Wherein, roughing is using single milling train≤7 passes, in the operation of rolling of the roughing, as finished product thickness≤3.5mm
When, control intermediate base with a thickness of 30-34mm；When finished product is with a thickness of 3.5-15mm, control intermediate base with a thickness of 34-
40mm.Specifically, if the thickness of intermediate base be less than present invention provide that minimum value, the peak load of milling train, contracting can be exceeded
Short milling train service life；If the thickness of intermediate base be greater than present invention provide that maximum value, finishing rolling mill can bear excessive
As a result deflection will cause the substantial increase of rough zone defect.
Preferably, when natural temperature is lower than 20 DEG C, the outlet temperature of the roughing is 1050-1150 DEG C, works as nature
For boundary's temperature at 20 DEG C or more, the outlet temperature of the roughing is 950-1050 DEG C.
Wherein, finish rolling uses tandem mill continuous rolling, and tandem mill includes 7 racks, wherein preceding 4 racks are used and newly beaten
Roll is ground, guarantees that roller surface is good, hole scar is visible by naked eyes, scratches.Wherein, the rolling deformation rate of 1-7 rack is 40-
45%, 37-42%, 35-40%, 25-30%, 23-28%, 15-20%, 10-15%.The present invention is by by finish rolling rolling deformation
Rate controls within the above range, can be effectively prevented and wears through roller surface, and then mitigates belt steel surface rough zone defect.
Preferably, the outlet temperature that the essence is pricked is 800-950 DEG C.
Wherein, the de-scaling pressure of the super-pressure de-scaling is 20-45MPa, and the de-scaling passage of the super-pressure de-scaling is 1
It is secondary.
Wherein, chromium content is 16-18%, nickel content≤0.6%, wherein in described in the middle chrome ferritic stainless steel
Chrome ferritic stainless steel includes but is not limited to 430 type stainless steels, 434 type stainless steels.
Wherein, in reduction of the invention chrome ferritic stainless steel rough surface band method, roughing and finishing stands not
Other heat-preserving equipments are put into, the heat-preserving equipment includes but is not limited to insulation cover, strip edge heater, Coil Box etc..Therefore, this hair
It is bright to reduce production cost, improve production efficiency.
Through undergone mass production it was verified that the method for chrome ferritic stainless steel rough surface band is thorough in reduction of the invention
Solves the problems, such as the rough zone on middle chrome ferritic stainless steel surface, rough zone ratio is reduced to by original 11% 1% hereinafter, energy
Enough realize lot-size production.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions.Following implementation
Raw material used in example is that regular market purchase obtains.
Embodiment 1
Mill product with a thickness of 430 type stainless steel of 3.0mm, including, the slab of Surface Quality difference is using the reconditioning side that has one's face covered with
Formula reconditioning continuous casting billet, reconditioning rate are 3.0%, and continuous casting billet good for surface is directly entered next work without reconditioning is carried out
Sequence.
Continuous casting billet is heated and kept the temperature using walking beam furnace, wherein environment temperature is 5 DEG C, the furnace of heat-recovery section
Temperature is 650 DEG C of heating 60min, and the furnace temperature of preheating section is 900 DEG C of heating 40min, and the furnace temperature of the first bringing-up section is 1000 DEG C of heating
40min, the second bringing-up section furnace temperature are 1180 DEG C of heating 50min, and the soaking zone furnace temperature is 1220 DEG C of heating 50min, in combustion gas
Oxygen content 1.1%.
Casting billet surface iron sheet is removed using super-pressure scale removal equipment, de-scaling passage is 1 time, and de-scaling pressure is 25MPa.
Using single milling train carry out roughing, roughing workpiece thickness be 32mm, 1075 DEG C of roughing outlet temperature.
Continuous rolling is carried out using tandem mill, preceding 4 rack is all using new roll, wherein each stand stretch rate is F1 rack
42.2%, F2 rack 39.4%, F3 rack 38.4%, F4 rack 27.3%, F5 rack 21.5%, F6 rack 16.3%, F7 machine
Frame 14.1%, 893 DEG C of exit temperature at finishing.
Continuous rolling type stainless steel of volume 15 430, is detected, and rolls rear belt steel surface and does not occur rough zone defect.
Embodiment 2
Mill product with a thickness of 430 type stainless steel of 4.0mm, including, the slab of Surface Quality difference is using the reconditioning side that has one's face covered with
Formula reconditioning continuous casting billet, reconditioning rate are 3.0%, and continuous casting billet good for surface is directly entered next work without reconditioning is carried out
Sequence.
Continuous casting billet is heated and kept the temperature using walking beam furnace, environment temperature is 25 DEG C, the furnace temperature of heat-recovery section
For 700 DEG C of heating 55min, the furnace temperature of preheating section is 950 DEG C of heating 50min, and the furnace temperature of the first bringing-up section is 1050 DEG C of heating
45min, the second bringing-up section furnace temperature are 1145 DEG C of heating 40min, and the soaking zone furnace temperature is 1185 DEG C of heating 50min, in combustion gas
Oxygen content 0.8%.
Casting billet surface iron sheet is removed using super-pressure scale removal equipment, de-scaling passage is 1 time, and de-scaling pressure is 27MPa.
Using single milling train carry out roughing, roughing workpiece thickness be 36mm, 1045 DEG C of roughing outlet temperature.
Continuous rolling is carried out using tandem mill, preceding 4 rack is all using new roll, wherein each stand stretch rate is F1 machine
Frame 41.2%, F2 rack 36.8%, F3 rack 35.2%, F4 rack 24.2%, F5 rack 20.4%, F6 rack 14.6%, F7
Rack 12.3%, 880 DEG C of exit temperature at finishing.
Continuous rolling type stainless steel of volume 18 430, is detected, and rolls rear belt steel surface and does not occur rough zone defect.Comparative example
Mill product with a thickness of 430 type stainless steel of 3.0mm, including, the slab of Surface Quality difference uses edge reconditioning side
Formula reconditioning continuous casting billet, reconditioning rate are 1.02%.
Continuous casting billet is heated and kept the temperature using walking beam furnace, wherein environment temperature is 5 DEG C, the furnace of heat-recovery section
Temperature is 650 DEG C of heating 60min, and the furnace temperature of preheating section is 900 DEG C of heating 40min, and the furnace temperature of the first bringing-up section is 1000 DEG C of heating
40min, the second bringing-up section furnace temperature are 1130 DEG C of heating 50min, and the soaking zone furnace temperature is 1150 DEG C of heating 50min, in combustion gas
Oxygen content 5%.
Casting billet surface iron sheet is removed using high pressure descaling equipment, de-scaling passage is 1 time, and de-scaling pressure is 15MPa.
Using single milling train carry out roughing, roughing workpiece thickness be 36mm, 1045 DEG C of roughing outlet temperature.
Continuous rolling is carried out using tandem mill, preceding 4 rack is all using new roll, wherein each stand stretch rate is F1 rack
39.5%, F2 rack 40.2%, F3 rack 41.5%, F4 rack 32.1%, F5 rack 20.6%, F6 rack 18.6%, F7 machine
Frame 15.2%, 890 DEG C of exit temperature at finishing.
Continuous rolling type stainless steel of volume 18 430, is detected, and rolls rear strip surfaces of volume 2 and rough zone defect, defect accounting occurs
11.11%.
The present invention is hereinbefore disclosed with preferred embodiment, but it should be understood by those skilled in the art that, these
Embodiment is only used for describing the present invention, but should not be understood as limiting the scope of the invention.It should be noted that all implement with these
Example equivalent variation and displacement, should all be set as being covered by scope of the presently claimed invention.Therefore, protection scope of the present invention
It should be subject to range defined in claims.
Claims (10)
1. a kind of method of chrome ferritic stainless steel rough surface band in reduction, successively include heating, super-pressure de-scaling, roughing,
Essence is pricked, which is characterized in that when natural temperature is less than 20 DEG C, the bringing-up section furnace temperature of the heating is 1150-1200 DEG C, soaking
Section furnace temperature is 1200-1250 DEG C；When natural temperature is at 20 DEG C or more, bringing-up section furnace temperature is 1100-1160 DEG C, soaking zone furnace
Temperature is 1150-1200 DEG C.
2. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that described
Heating is completed in heating furnace, including heat-recovery section, preheating section, the first bringing-up section, the second bringing-up section and soaking zone.
3. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 2, which is characterized in that described
The furnace temperature of heat-recovery section is 600-700 DEG C of heating 30-70min；The furnace temperature of the preheating section is 900-1000 DEG C of heating 30-
60min；The furnace temperature of first bringing-up section is 1150-1200 DEG C of heating 30-50min；When natural temperature is less than 20 DEG C, institute
Stating the second bringing-up section furnace temperature is 1150-1200 DEG C of heating 30-60min, and the soaking zone furnace temperature is 1200-1250 DEG C of heating 40-
60min；When natural temperature is at 20 DEG C or more, the second bringing-up section furnace temperature is 1100-1160 DEG C of heating 30-60min, institute
Stating soaking zone furnace temperature is 1150-1200 DEG C of heating 40-60min.
4. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 2 or 3, which is characterized in that
Before the heating, further include the steps that carrying out slab reconditioning of having one's face covered with, reconditioning rate≤3.5% of the reconditioning of having one's face covered with.It is described
Oxygen content≤3% in the combustion gas of heating furnace.
5. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that described
In the operation of rolling of roughing, when finished product is with a thickness of≤3.5mm, control intermediate base with a thickness of 30-34mm；When finished product with a thickness of
When 3.5-15mm, control intermediate base with a thickness of 34-40mm.
6. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that described
The tandem mill that essence is pricked includes 7 racks, and the rolling deformation rate of 1-7 rack is 40-45%, 35-40%, 34-39%, 23-
28%, 20-25%, 13-18%, 10-15%.
7. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that when certainly
When right boundary's temperature is lower than 20 DEG C, the outlet temperature of the roughing is 1050-1150 DEG C, when natural temperature is at 20 DEG C or more,
The outlet temperature of the roughing is 950-1050 DEG C；It is described essence prick outlet temperature be 800-950 DEG C, wherein the roughing and
The finishing stands do not use heat-preserving equipment.
8. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that described
The de-scaling pressure of super-pressure de-scaling is 20-45MPa, and the de-scaling passage of the super-pressure de-scaling is 1 time.
9. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that in institute
Before stating heating, further include the steps that carrying out slab reconditioning of having one's face covered with, reconditioning rate≤3.5% of the reconditioning of having one's face covered with.
10. the method for chrome ferritic stainless steel rough surface band in reduction according to claim 1, which is characterized in that institute
Stating chromium content in chrome ferritic stainless steel is 16-18%, nickel content≤0.6%.
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| CN201910586192.1A CN110252809B (en) | 2019-07-01 | 2019-07-01 | Method for reducing surface roughness of medium-chromium ferrite stainless steel |
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| CN201910586192.1A CN110252809B (en) | 2019-07-01 | 2019-07-01 | Method for reducing surface roughness of medium-chromium ferrite stainless steel |
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Cited By (5)
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| CN110814030A (en) * | 2019-10-11 | 2020-02-21 | 山东盛阳金属科技股份有限公司 | Heat-resistant composite stainless steel and hot rolling production process thereof |
| CN111412755A (en) * | 2020-03-03 | 2020-07-14 | 首钢京唐钢铁联合有限责任公司 | Method for reducing emission concentration of nitric oxide in steel rolling heating furnace |
| CN112845594A (en) * | 2020-12-28 | 2021-05-28 | 浦项(张家港)不锈钢股份有限公司 | Hot rolling production process of low-hardness ferrite stainless steel |
| CN113462967A (en) * | 2021-06-19 | 2021-10-01 | 山东盛阳金属科技股份有限公司 | 430 ferrite stainless steel and production process thereof |
| CN113549743A (en) * | 2021-06-25 | 2021-10-26 | 鞍钢股份有限公司 | Method for controlling grain size of high-carbon ferritic stainless steel extra-thick plate |
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| CN110814030A (en) * | 2019-10-11 | 2020-02-21 | 山东盛阳金属科技股份有限公司 | Heat-resistant composite stainless steel and hot rolling production process thereof |
| CN110814030B (en) * | 2019-10-11 | 2021-03-16 | 山东盛阳金属科技股份有限公司 | Heat-resistant composite stainless steel and hot rolling production process thereof |
| CN111412755A (en) * | 2020-03-03 | 2020-07-14 | 首钢京唐钢铁联合有限责任公司 | Method for reducing emission concentration of nitric oxide in steel rolling heating furnace |
| CN112845594A (en) * | 2020-12-28 | 2021-05-28 | 浦项(张家港)不锈钢股份有限公司 | Hot rolling production process of low-hardness ferrite stainless steel |
| CN113462967A (en) * | 2021-06-19 | 2021-10-01 | 山东盛阳金属科技股份有限公司 | 430 ferrite stainless steel and production process thereof |
| CN113549743A (en) * | 2021-06-25 | 2021-10-26 | 鞍钢股份有限公司 | Method for controlling grain size of high-carbon ferritic stainless steel extra-thick plate |
| CN113549743B (en) * | 2021-06-25 | 2022-08-16 | 鞍钢股份有限公司 | Method for controlling grain size of high-carbon ferritic stainless steel extra-thick plate |
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