CN117358756A - Rolling method for improving internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy - Google Patents
Rolling method for improving internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy Download PDFInfo
- Publication number
- CN117358756A CN117358756A CN202311249930.6A CN202311249930A CN117358756A CN 117358756 A CN117358756 A CN 117358756A CN 202311249930 A CN202311249930 A CN 202311249930A CN 117358756 A CN117358756 A CN 117358756A
- Authority
- CN
- China
- Prior art keywords
- temperature
- small square
- percent
- resistant alloy
- ferronickel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 43
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 42
- 239000011651 chromium Substances 0.000 title claims abstract description 42
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 title claims abstract description 38
- 230000007797 corrosion Effects 0.000 title claims abstract description 37
- 238000005260 corrosion Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000007670 refining Methods 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 18
- 229910000863 Ferronickel Inorganic materials 0.000 claims description 17
- 238000002791 soaking Methods 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000004512 die casting Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000000047 product Substances 0.000 abstract description 7
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001566 austenite Inorganic materials 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical class [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012467 final product Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- -1 titanium nitrides Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/023—Alloys based on nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/02—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills in which work is subjected to permanent internal twisting, e.g. for producing reinforcement bars for concrete
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to the field of steel rolling, in particular to a rolling method for improving the internal structure of a nickel-iron-chromium high-temperature corrosion-resistant alloy, which comprises the following steps: (1) Smelting, decarburizing and refining the ferronickel-chromium high-temperature corrosion-resistant alloy in an electric arc furnace, molding the ferronickel-chromium high-temperature corrosion-resistant alloy into ingots, finishing the ingots, and then conveying the ingots to a heating furnace; (2) The heated steel ingot is sent into a cogging mill to be rolled into small square billets, and the small square billets are heated to the temperature required by deformation; (3) The small square billets reaching the temperature required by deformation are subjected to circumferential rotational deformation treatment and then sent into a finishing mill for rolling. According to the invention, circumferential rotational deformation is added between the cogging mill and the finishing mill, so that the three-dimensional deformation of small square steel is realized, the deformation is greatly increased, and the as-cast defect is further reduced; the increase of the deformation quantity refines austenite grains, is also beneficial to fully crushing the chain titanium nitride of the small square steel in the rolling process, and achieves the effect of fully dispersing and distributing, thereby improving the mechanical strength of the final product and improving the quality of the product.
Description
Technical Field
The invention relates to the technical field of steel rolling, in particular to a rolling method for improving the internal structure of a nickel-iron-chromium high-temperature corrosion-resistant alloy.
Background
Ferronickel-chromium superalloys generally have a relatively high nickel content and a relatively high chromium content. The alloy element is higher, and the deformation resistance is large in the rolling process. In the traditional rolling mode, the deformation of the material core is small, and as-cast defects such as internal center porosity, center segregation and center cracks are difficult to eliminate, the internal low-power quality such as general porosity, center porosity and segregation after the material is rolled is difficult to be reduced to below grade 2.
Moreover, the inside of the ferronickel chromium high-temperature corrosion-resistant alloy is mainly an austenite structure, the austenite structure cannot be refined in a heat treatment mode, and austenite grains can be refined only in a mode of increasing deformation in a hot rolling process. The deformation in the hot rolling process is limited by the cogging capacity of a cogging mill, the size of an as-cast steel ingot and the size of rolled round steel, and the conventional rolling mode cannot increase the deformation, so that the grain size of the material after rolling is always in 4-6 grades, and further grain refinement is difficult.
In addition, part of the ferronickel chromium high-temperature corrosion-resistant alloy contains a certain amount of titanium precipitation strengthening elements, and the effect of improving the mechanical strength of the material is achieved by utilizing the dispersion distribution of titanium nitride in the material. Chain titanium nitride can be formed in the cast steel ingot, the chain titanium nitride cannot achieve the effect of dispersion distribution without being broken in the rolling process, and the mechanical property of the material can be deteriorated, so that the material can generate cracking problem in the using or subsequent processing process.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy, which overcomes the problem of insufficient rolling deformation of materials in the prior art, improves the mechanical strength of the final product and improves the quality of the product.
(II) in order to achieve the above purpose, the invention is realized by the following technical scheme: a rolling method for improving the internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy comprises the following steps,
(1) The ferronickel chromium high-temperature corrosion-resistant alloy is subjected to arc furnace smelting, AOD furnace decarburization refining, LF furnace external refining and ingot molding, and then is sent to a heating furnace for heating after finishing;
(2) The heated steel ingot is sent into a cogging mill to be rolled into small square billets, and temperature compensation is carried out on the small square billets, so that the temperature of the small square billets is increased to the temperature required by deformation;
(3) The small square billets reaching the temperature required by deformation are subjected to circumferential rotational deformation treatment and then sent into a finishing mill for rolling.
Preferably, in the step (1), the nickel-iron-chromium high-temperature corrosion-resistant alloy comprises the following components in percentage by mass: 38.0 to 46.0 percent of Ni, 19.5 to 23.5 percent of Cr, 2.5 to 3.5 percent of Mo, 1.5 to 3.0 percent of Cu, 0.6 to 1.2 percent of Ti, less than or equal to 1.0 percent of Mn, less than or equal to 0.5 percent of Si, less than or equal to 0.2 percent of Al, less than or equal to 0.05 percent of C, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Preferably, in the step (1), the heating furnace is divided into a preheating zone, a heating zone and a soaking heat preservation zone; during the period, the preheating zone temperature is controlled to be 900-1000 ℃, the heating zone temperature is controlled to be 1100-1300 ℃, and the soaking heat preservation zone temperature is controlled to be 1280-1350 ℃.
Preferably, the preheating time of the steel ingot in the heating furnace is 0.5-1.5h, the heating time is 2-3.5h, and the soaking heat preservation time is 4-6h.
Preferably, in the step (2), the steel ingot enters a cogging machine, and small square billets are obtained after cogging for 8-12 times; the dimensions of the billets were 120mm by 5000mm.
Preferably, the steel ingot is formed into small square billets after 9 times of cogging, and the method specifically comprises the following steps:
adopting a flat box hole in the first step, wherein the height of the steel ingot is 212mm; the second step adopts a flat box hole, and the height of the steel ingot is 184mm; the third step adopts a vertical box hole, and the height of the steel ingot is 216mm; the fourth step adopts square box holes, and the height of steel ingots is 187mm; adopting a flat box hole in the fifth channel, wherein the height of the steel ingot is 160mm; adopting a flat box hole in the sixth step, wherein the height of the steel ingot is 135mm; the seventh step adopts a vertical box hole, and the height of the steel ingot is 168mm; the eighth step adopts square box holes, and the height of steel ingots is 137mm; and the ninth step adopts a flat box hole, and the height of the steel ingot is 120mm.
Preferably, in the step (2), the temperature compensation treatment is performed on the billets by adopting a magnetic induction heating device, so that the billets are heated to 1150 ℃ or higher, namely the temperature required by deformation.
Preferably, in the step (3), the small square billets are processed through circumferential rotation deformation, and the rotation angle of the small square billets is controlled to be 20-30 degrees per meter.
Preferably, the circumferential rotational deformation process is specifically: and (3) pressing one end of the small square billet close to the finishing mill, and twisting the other end of the small square billet to enable the small square billet to deform circumferentially.
Preferably, when the temperature of the billet is insufficient in the circumferential deformation treatment process, the billet is subjected to temperature compensation treatment so as to reach the temperature required by deformation again.
The invention provides a rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy, which has the following beneficial effects:
according to the invention, circumferential rotational deformation is added between the cogging mill and the finishing mill, so that the three-dimensional deformation of the small square steel in the longitudinal, axial and circumferential directions is realized, the deformation is greatly increased, and the as-cast defect is further reduced; the increase of the deformation quantity refines austenite grains, is also beneficial to fully crushing the chain titanium nitride of the small square steel in the rolling process, and achieves the effect of fully dispersing and distributing, thereby improving the mechanical strength of the final product and improving the quality of the product.
The rolling method adopted by the invention is simpler in whole and simplified in process, reduces the rolling cost of the small square steel, and is beneficial to the large-scale implementation of the rolling method.
Drawings
FIG. 1 is a low-power gold phase diagram of the product of example 1 of the present invention;
FIG. 2 is a high-power metallographic structure diagram of the product in example 1 of the present invention;
FIG. 3 is a high-power titanium nitride precipitation phase diagram of the product of example 1 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
A rolling method for improving the internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy comprises the following steps:
smelting the ferronickel-chromium high-temperature corrosion-resistant alloy by an arc furnace, decarburizing and refining by an AOD furnace, and performing external refining by an LF furnace, and then die casting into steel ingots; after finishing, the steel ingot is sent into a steel rolling heating furnace, firstly preheated for 1h at 930 ℃ in a preheating zone, then heated for 3h at 1280 ℃ in a heating zone, and finally insulated for 5h at 1310 ℃ in a soaking and heat insulating zone; after the steel ingot is heated (red billet) is sent into a cogging machine, the temperature of the steel ingot is 1180 ℃ when the steel ingot enters the cogging machine, and small square billets with the dimensions of 120mm multiplied by 5000mm are obtained after 9 cogging; measuring the surface temperature of the small square billet to 1090 ℃, and then adopting a magnetic induction heating device to perform temperature compensation treatment on the small square billet, so that the surface temperature of the small square billet is increased to 1190 ℃ to meet the temperature required by deformation; then, pressing one end of the small square billet close to the finishing mill, twisting the other end of the small square billet to enable the small square billet to generate circumferential deformation, controlling the rotation angle of the small square billet to be 25 DEG per meter, and returning the small square billet to the magnetic induction heating device for heating again when the surface temperature of the small square billet is lower than 1150 ℃ in the circumferential deformation process; and (5) conveying the small square billets subjected to circumferential rotation deformation into a finishing mill to be rolled into round steel with phi of 65 mm.
In the embodiment, the ferronickel chromium high-temperature corrosion-resistant alloy comprises the following components in percentage by mass: 38.0 to 46.0 percent of Ni, 19.5 to 23.5 percent of Cr, 2.5 to 3.5 percent of Mo, 1.5 to 3.0 percent of Cu, 0.6 to 1.2 percent of Ti, less than or equal to 1.0 percent of Mn, less than or equal to 0.5 percent of Si, less than or equal to 0.2 percent of Al, less than or equal to 0.05 percent of C, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Wherein, the steel ingot is rolled by 9 times in a cogging mill, and the specific control is shown in the following table.
Table 1 rolling control
Example 2
A rolling method for improving the internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy comprises the following steps:
smelting the ferronickel-chromium high-temperature corrosion-resistant alloy by an arc furnace, decarburizing and refining by an AOD furnace, and performing external refining by an LF furnace, and then die casting into steel ingots; after finishing, the steel ingot is sent into a steel rolling heating furnace, firstly, the steel ingot is preheated at 900 ℃ for 1.5 hours in a preheating zone, then is heated at 1100 ℃ for 3.5 hours in a heating zone, and finally is kept at 1350 ℃ for 4 hours in a soaking and heat preserving zone; after the steel ingot is heated (red billet) is sent into a cogging machine, the temperature of the steel ingot is 1180 ℃ when the steel ingot enters the cogging machine, and small square billets with the dimensions of 120mm multiplied by 5000mm are obtained after 9 cogging; measuring the surface temperature of the small square billet to 1090 ℃, and then adopting a magnetic induction heating device to perform temperature compensation treatment on the small square billet, so that the surface temperature of the small square billet is increased to 1200 ℃ to meet the temperature required by deformation; then, pressing one end of the small square billet close to the finishing mill, twisting the other end of the small square billet to enable the small square billet to generate circumferential deformation, controlling the rotation angle of the small square billet to be 25 DEG per meter, and returning the small square billet to the magnetic induction heating device for heating again when the surface temperature of the small square billet is lower than 1150 ℃ in the circumferential deformation process; and (5) conveying the small square billets subjected to circumferential rotation deformation into a finishing mill to be rolled into round steel with phi of 65 mm.
In the embodiment, the ferronickel chromium high-temperature corrosion-resistant alloy comprises the following components in percentage by mass: 38.0 to 46.0 percent of Ni, 19.5 to 23.5 percent of Cr, 2.5 to 3.5 percent of Mo, 1.5 to 3.0 percent of Cu, 0.6 to 1.2 percent of Ti, less than or equal to 1.0 percent of Mn, less than or equal to 0.5 percent of Si, less than or equal to 0.2 percent of Al, less than or equal to 0.05 percent of C, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Wherein the steel ingot was rolled by 9 passes in a cogging mill, the specific control was the same as in example 1.
Example 3
A rolling method for improving the internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy comprises the following steps:
smelting the ferronickel-chromium high-temperature corrosion-resistant alloy by an arc furnace, decarburizing and refining by an AOD furnace, and performing external refining by an LF furnace, and then die casting into steel ingots; after finishing, the steel ingot is sent into a steel rolling heating furnace, firstly, the steel ingot is preheated for 0.8h at 1000 ℃ in a preheating zone, then is heated for 2.5h at 1300 ℃ in a heating zone, and finally is insulated for 5h at 1300 ℃ in a soaking and heat insulating zone; after the steel ingot is heated (red billet) is sent into a cogging machine, the temperature of the steel ingot is 1180 ℃ when the steel ingot enters the cogging machine, and small square billets with the dimensions of 120mm multiplied by 5000mm are obtained after 9 cogging; measuring the surface temperature of the small square billet to 1090 ℃, and then adopting a magnetic induction heating device to perform temperature compensation treatment on the small square billet, so that the surface temperature of the small square billet is increased to 1170 ℃ to meet the temperature required by deformation; then, pressing one end of the small square billet close to the finishing mill, twisting the other end of the small square billet to enable the small square billet to generate circumferential deformation, controlling the rotation angle of the small square billet to be 25 DEG per meter, and returning the small square billet to the magnetic induction heating device for heating again when the surface temperature of the small square billet is lower than 1150 ℃ in the circumferential deformation process; and (5) conveying the small square billets subjected to circumferential rotation deformation into a finishing mill to be rolled into round steel with phi of 65 mm.
In the embodiment, the ferronickel chromium high-temperature corrosion-resistant alloy comprises the following components in percentage by mass: 38.0 to 46.0 percent of Ni, 19.5 to 23.5 percent of Cr, 2.5 to 3.5 percent of Mo, 1.5 to 3.0 percent of Cu, 0.6 to 1.2 percent of Ti, less than or equal to 1.0 percent of Mn, less than or equal to 0.5 percent of Si, less than or equal to 0.2 percent of Al, less than or equal to 0.05 percent of C, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Wherein the steel ingot was rolled by 9 passes in a cogging mill, the specific control was the same as in example 1.
Comparative example 1
A rolling method for improving the internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy comprises the following steps:
smelting the ferronickel-chromium high-temperature corrosion-resistant alloy by an arc furnace, decarburizing and refining by an AOD furnace, and performing external refining by an LF furnace, and then die casting into steel ingots; after finishing, the steel ingot is sent into a steel rolling heating furnace, firstly preheated for 1h at 930 ℃ in a preheating zone, then heated for 3h at 1280 ℃ in a heating zone, and finally insulated for 5h at 1310 ℃ in a soaking and heat insulating zone; after the steel ingot is heated (red billet) is sent into a cogging machine, the temperature of the steel ingot is 1180 ℃ when the steel ingot enters the cogging machine, and small square billets with the dimensions of 120mm multiplied by 5000mm are obtained after 9 cogging; measuring the surface temperature of the small square billet to 1090 ℃, then adopting a magnetic induction heating device to perform temperature compensation treatment on the small square billet, so that the surface temperature of the small square billet is increased to 1190 ℃, and then conveying the small square billet into a finishing mill to roll into round steel with phi 65 mm.
In the embodiment, the ferronickel chromium high-temperature corrosion-resistant alloy comprises the following components in percentage by mass: 38.0 to 46.0 percent of Ni, 19.5 to 23.5 percent of Cr, 2.5 to 3.5 percent of Mo, 1.5 to 3.0 percent of Cu, 0.6 to 1.2 percent of Ti, less than or equal to 1.0 percent of Mn, less than or equal to 0.5 percent of Si, less than or equal to 0.2 percent of Al, less than or equal to 0.05 percent of C, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
Wherein the steel ingot was rolled by 9 passes in a cogging mill, the specific control was the same as in example 1.
Performance detection
1. The phi 65mm round steels prepared in example 1 and comparative example 1 were subjected to low-power metallographic examination and evaluation, and specific evaluation results are shown in the following table.
Table 2 evaluation results
| Type(s) | Center porosity | Center segregation | Center crack |
| Example 1 | 1 | 2 | 1 |
| Comparative example 1 | 2 | 3 | 2 |
2. The phi 65mm round steels produced in example 1 and comparative example 1 were subjected to high-power metallographic examination, and the grain size was evaluated according to GB/T6394-2002. The specific results are shown in the following table.
TABLE 3 grain size
| Type(s) | Grain size of |
| Example 1 | Grade 7.5 |
| Comparative example 1 | Grade 5.0 |
Referring to fig. 3, no aggregation of titanium precipitates was observed in the product test of example 1, and all titanium nitrides were dotted and no chain structure was present as seen in fig. 3.
The embodiments of the present invention are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present invention.
Claims (10)
1. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy is characterized by comprising the following steps of:
(1) Smelting, decarburizing, refining and die casting the ferronickel-chromium high-temperature corrosion-resistant alloy into ingots, finishing, and then sending the ingots to a heating furnace for heating;
(2) The heated steel ingot is sent into a cogging mill to be rolled into small square billets, and temperature compensation is carried out on the small square billets, so that the temperature of the small square billets is increased to the temperature required by deformation;
(3) The small square billets reaching the temperature required by deformation are subjected to circumferential rotational deformation treatment and then sent into a finishing mill for rolling.
2. The rolling method for improving the internal structure of the ferronickel-chromium high-temperature corrosion-resistant alloy according to claim 1, wherein in the step (1), the ferronickel-chromium high-temperature corrosion-resistant alloy comprises the following components in percentage by mass: 38.0 to 46.0 percent of Ni, 19.5 to 23.5 percent of Cr, 2.5 to 3.5 percent of Mo, 1.5 to 3.0 percent of Cu, 0.6 to 1.2 percent of Ti, less than or equal to 1.0 percent of Mn, less than or equal to 0.5 percent of Si, less than or equal to 0.2 percent of Al, less than or equal to 0.05 percent of C, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe.
3. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy according to claim 1, wherein in the step (1), the heating furnace is divided into a preheating zone, a heating zone and a soaking heat preservation zone; during the period, the preheating zone temperature is controlled to be 900-1000 ℃, the heating zone temperature is controlled to be 1100-1300 ℃, and the soaking heat preservation zone temperature is controlled to be 1280-1350 ℃.
4. The rolling method for improving the internal structure of the ferronickel-chromium high-temperature corrosion-resistant alloy according to claim 3, wherein the preheating time of the steel ingot in a heating furnace is 0.5-1.5h, the heating time is 2-3.5h, and the soaking heat preservation time is 4-6h.
5. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy according to claim 1, wherein in the step (2), steel ingots enter a cogging machine, and small square billets are obtained after cogging for 8-12 times; the dimensions of the billets were 120mm by 5000mm.
6. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy according to claim 5, wherein the steel ingot is formed into small square billets after 9 times of cogging, and the rolling method is characterized by comprising the following steps:
adopting a flat box hole in the first step, wherein the height of the steel ingot is 212mm; the second step adopts a flat box hole, and the height of the steel ingot is 184mm; the third step adopts a vertical box hole, and the height of the steel ingot is 216mm; the fourth step adopts square box holes, and the height of steel ingots is 187mm; adopting a flat box hole in the fifth channel, wherein the height of the steel ingot is 160mm; adopting a flat box hole in the sixth step, wherein the height of the steel ingot is 135mm; the seventh step adopts a vertical box hole, and the height of the steel ingot is 168mm; the eighth step adopts square box holes, and the height of steel ingots is 137mm; and the ninth step adopts a flat box hole, and the height of the steel ingot is 120mm.
7. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy according to claim 1, wherein in the step (2), a magnetic induction heating device is adopted to perform temperature compensation treatment on the billets, so that the billets are heated to a temperature above 1150 ℃, namely the temperature required by deformation.
8. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion resistant alloy according to claim 1, wherein in the step (3), the small square billet is subjected to circumferential rotational deformation, and the rotational angle of the small square billet is controlled to be 20-30 degrees per meter.
9. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy according to claim 8, wherein the circumferential rotational deformation treatment is specifically as follows: and (3) pressing one end of the small square billet close to the finishing mill, and twisting the other end of the small square billet to enable the small square billet to deform circumferentially.
10. The rolling method for improving the internal structure of the ferronickel chromium high-temperature corrosion-resistant alloy according to claim 8, wherein when the temperature of the billet is insufficient in the circumferential deformation treatment process, the billet is subjected to temperature compensation treatment to reach the temperature required by deformation again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311249930.6A CN117358756B (en) | 2023-09-26 | 2023-09-26 | Rolling method for improving internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311249930.6A CN117358756B (en) | 2023-09-26 | 2023-09-26 | Rolling method for improving internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117358756A true CN117358756A (en) | 2024-01-09 |
| CN117358756B CN117358756B (en) | 2024-05-14 |
Family
ID=89397387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311249930.6A Active CN117358756B (en) | 2023-09-26 | 2023-09-26 | Rolling method for improving internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117358756B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320412A (en) * | 1986-07-15 | 1988-01-28 | Nisshin Steel Co Ltd | Hot working method for austenitic stainless steel containing mo and n |
| SU1667960A2 (en) * | 1988-11-24 | 1991-08-07 | Челябинский Политехнический Институт Им.Ленинского Комсомола | Working stand of rolling mill |
| CN1205254A (en) * | 1997-07-14 | 1999-01-20 | 郭静峰 | Cold-rolled deformed steel bar production process |
| JP2004137564A (en) * | 2002-10-18 | 2004-05-13 | Sumitomo Metal Ind Ltd | Hot rolled steel member, and production method therefor |
| CN101054647A (en) * | 2007-05-26 | 2007-10-17 | 山西太钢不锈钢股份有限公司 | Method of producing low-temperature high-toughness steel and steel plate |
| CN105149346A (en) * | 2015-09-07 | 2015-12-16 | 云南钛业股份有限公司 | Method of producing TA10 alloy wire rods through high-speed wire mill |
| JP2016089267A (en) * | 2014-11-06 | 2016-05-23 | 東北大学 | High toughness thin steel sheet for toughening submicron austenite and manufacturing method therefor |
| CN106191650A (en) * | 2016-08-04 | 2016-12-07 | 邢台钢铁有限责任公司 | High abrasion Surface hardened layer type gren rod and production method thereof |
| CN108034895A (en) * | 2018-01-15 | 2018-05-15 | 江苏申源特钢有限公司 | A kind of Valve Steel 50Cr21Mn9Ni4Nb2WN polishes the production method of bright as silver bar |
| CN112934974A (en) * | 2021-01-29 | 2021-06-11 | 西北工业大学 | Metal cylindrical part external rolling extrusion forming device and forming method |
| CN113245393A (en) * | 2021-05-08 | 2021-08-13 | 江苏申源集团有限公司 | Preparation method of bar for EMS247 austenitic gas valve steel hot extrusion |
| CN114406002A (en) * | 2021-12-15 | 2022-04-29 | 西安晟东锻压有限公司 | Rotary rolling process for producing seamless steel tube for high-performance bearing ring |
| CN114480808A (en) * | 2022-02-14 | 2022-05-13 | 河北工程大学 | Manganese steel in composite gradient structure and preparation method thereof |
| CN114959420A (en) * | 2022-05-30 | 2022-08-30 | 江苏联峰能源装备有限公司 | Preparation method of non-quenched and tempered steel for cylinder of plastic molding machine for producing round billet |
| CN114990427A (en) * | 2022-04-25 | 2022-09-02 | 靖江特殊钢有限公司 | Hot-rolled corrosion-resistant round steel and preparation method thereof |
| US20220333228A1 (en) * | 2019-08-06 | 2022-10-20 | Aleris Rolled Products Germany Gmbh | Compact aluminium alloy heat treatment method |
| CN115233040A (en) * | 2022-09-21 | 2022-10-25 | 广东腐蚀科学与技术创新研究院 | Nickel-chromium-iron alloy material for temperature control and preparation method and application thereof |
| CN115921523A (en) * | 2022-12-27 | 2023-04-07 | 武钢集团昆明钢铁股份有限公司 | Low-carbon hot-rolled No. 14I-steel and preparation method thereof |
| CN116005038A (en) * | 2022-12-08 | 2023-04-25 | 北京首钢吉泰安新材料有限公司 | Nickel-chromium-iron alloy and preparation method thereof |
| CN116727443A (en) * | 2023-06-01 | 2023-09-12 | 山西太钢不锈钢股份有限公司 | Nickel-based alloy coiled plate and production method thereof |
-
2023
- 2023-09-26 CN CN202311249930.6A patent/CN117358756B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320412A (en) * | 1986-07-15 | 1988-01-28 | Nisshin Steel Co Ltd | Hot working method for austenitic stainless steel containing mo and n |
| SU1667960A2 (en) * | 1988-11-24 | 1991-08-07 | Челябинский Политехнический Институт Им.Ленинского Комсомола | Working stand of rolling mill |
| CN1205254A (en) * | 1997-07-14 | 1999-01-20 | 郭静峰 | Cold-rolled deformed steel bar production process |
| JP2004137564A (en) * | 2002-10-18 | 2004-05-13 | Sumitomo Metal Ind Ltd | Hot rolled steel member, and production method therefor |
| CN101054647A (en) * | 2007-05-26 | 2007-10-17 | 山西太钢不锈钢股份有限公司 | Method of producing low-temperature high-toughness steel and steel plate |
| JP2016089267A (en) * | 2014-11-06 | 2016-05-23 | 東北大学 | High toughness thin steel sheet for toughening submicron austenite and manufacturing method therefor |
| CN105149346A (en) * | 2015-09-07 | 2015-12-16 | 云南钛业股份有限公司 | Method of producing TA10 alloy wire rods through high-speed wire mill |
| CN106191650A (en) * | 2016-08-04 | 2016-12-07 | 邢台钢铁有限责任公司 | High abrasion Surface hardened layer type gren rod and production method thereof |
| CN108034895A (en) * | 2018-01-15 | 2018-05-15 | 江苏申源特钢有限公司 | A kind of Valve Steel 50Cr21Mn9Ni4Nb2WN polishes the production method of bright as silver bar |
| US20220333228A1 (en) * | 2019-08-06 | 2022-10-20 | Aleris Rolled Products Germany Gmbh | Compact aluminium alloy heat treatment method |
| CN112934974A (en) * | 2021-01-29 | 2021-06-11 | 西北工业大学 | Metal cylindrical part external rolling extrusion forming device and forming method |
| CN113245393A (en) * | 2021-05-08 | 2021-08-13 | 江苏申源集团有限公司 | Preparation method of bar for EMS247 austenitic gas valve steel hot extrusion |
| CN114406002A (en) * | 2021-12-15 | 2022-04-29 | 西安晟东锻压有限公司 | Rotary rolling process for producing seamless steel tube for high-performance bearing ring |
| CN114480808A (en) * | 2022-02-14 | 2022-05-13 | 河北工程大学 | Manganese steel in composite gradient structure and preparation method thereof |
| CN114990427A (en) * | 2022-04-25 | 2022-09-02 | 靖江特殊钢有限公司 | Hot-rolled corrosion-resistant round steel and preparation method thereof |
| CN114959420A (en) * | 2022-05-30 | 2022-08-30 | 江苏联峰能源装备有限公司 | Preparation method of non-quenched and tempered steel for cylinder of plastic molding machine for producing round billet |
| CN115233040A (en) * | 2022-09-21 | 2022-10-25 | 广东腐蚀科学与技术创新研究院 | Nickel-chromium-iron alloy material for temperature control and preparation method and application thereof |
| CN116005038A (en) * | 2022-12-08 | 2023-04-25 | 北京首钢吉泰安新材料有限公司 | Nickel-chromium-iron alloy and preparation method thereof |
| CN115921523A (en) * | 2022-12-27 | 2023-04-07 | 武钢集团昆明钢铁股份有限公司 | Low-carbon hot-rolled No. 14I-steel and preparation method thereof |
| CN116727443A (en) * | 2023-06-01 | 2023-09-12 | 山西太钢不锈钢股份有限公司 | Nickel-based alloy coiled plate and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117358756B (en) | 2024-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3354756B1 (en) | Online-controlled seamless steel tube cooling process and seamless steel tube manufacturing method with effective grain refinement | |
| CN108330390A (en) | Delayed fracture-resistant alloy cold heading steel wire rod and production method thereof | |
| CN101812646B (en) | High-speed steel alloy casting process used for roll | |
| CN112831718B (en) | Hot continuous rolling two-roller rough rolling working roller and preparation method thereof | |
| JP4556334B2 (en) | Non-tempered steel hot forged parts for soft nitriding | |
| CN102517522A (en) | Steel for hydraulic piece and manufacturing method for steel | |
| CN112251664A (en) | Ultra-fine grain alloy steel forging and manufacturing method thereof | |
| CN110791717A (en) | High-quality hypoeutectoid alloy tool steel wire rod and production method thereof | |
| CN113737099B (en) | Tool steel suitable for large-deformation cold machining forming and preparation method thereof, and sleeve and preparation method thereof | |
| CN114346197B (en) | Preparation method of surface roughness-resistant roller for heavy and medium plate mill | |
| CN114934231A (en) | High-manganese low-magnetism high-strength austenitic steel and manufacturing method thereof | |
| CN106566953A (en) | Corrosion-resisting alloy forge piece and production method thereof | |
| CN117358756B (en) | Rolling method for improving internal structure of ferronickel-chromium high-temperature corrosion-resistant alloy | |
| JP2022024978A (en) | Carburized bearing steel and its manufacturing method | |
| CN115261746B (en) | Super-thick Q420qE bridge steel plate and production method thereof | |
| CN110791706A (en) | Austenitic coarse-grain structural steel for cold forging and preparation method of wire rod of austenitic coarse-grain structural steel | |
| CN109055645A (en) | A kind of economical HIC resistance pipeline steel plate X52NS and its manufacturing method of the delivery of normalizing state | |
| CN108929985A (en) | Intensity and the excellent middle carbon line material and its manufacturing method of cold-workability | |
| CN107326267A (en) | A kind of production technology of bearing steel | |
| CN114752848A (en) | Steel for high-hardenability gear and manufacturing method thereof | |
| CN115404415B (en) | Round steel for supporting shaft forging and rolling method thereof | |
| CN115261744B (en) | High-toughness low-chromium ferrite stainless steel medium plate and manufacturing method thereof | |
| CN115125376B (en) | Post-forging heat treatment process and forging process of G102Cr18Mo stainless steel forging | |
| CN111074160B (en) | High-red hard die steel and preparation method thereof | |
| CN102296240B (en) | Preparation method of steel pipe and cold-formed steel high-chromium roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |