CN109097758A - A kind of hot rolling magnetic yoke steel long-acting antirust method and apparatus - Google Patents
A kind of hot rolling magnetic yoke steel long-acting antirust method and apparatus Download PDFInfo
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- CN109097758A CN109097758A CN201710476474.7A CN201710476474A CN109097758A CN 109097758 A CN109097758 A CN 109097758A CN 201710476474 A CN201710476474 A CN 201710476474A CN 109097758 A CN109097758 A CN 109097758A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 108
- 239000010959 steel Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005098 hot rolling Methods 0.000 title abstract description 6
- 239000013556 antirust agent Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 12
- 238000010926 purge Methods 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 54
- 238000003756 stirring Methods 0.000 claims description 50
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 33
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 24
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 16
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 15
- 239000001263 FEMA 3042 Substances 0.000 claims description 15
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 15
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 15
- 229940033123 tannic acid Drugs 0.000 claims description 15
- 235000015523 tannic acid Nutrition 0.000 claims description 15
- 229920002258 tannic acid Polymers 0.000 claims description 15
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 14
- 239000012964 benzotriazole Substances 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims description 14
- 239000003112 inhibitor Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 239000011362 coarse particle Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- CBBAERKNWYDBNY-UHFFFAOYSA-N [Si].[Mn].[Mo] Chemical compound [Si].[Mn].[Mo] CBBAERKNWYDBNY-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/76—Applying the liquid by spraying
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention provides a kind of hot rolling magnetic yoke steel long-acting antirust equipment, sequentially include: No. 1 pinch roller, up and down thick brush roll, No. 2 pinch rollers, up and down smart brush roll, No. 3 pinch rollers, antirust agent nozzle and purge nozzle according to hot rolling magnetic yoke steel moving direction；It is connected in addition, being additionally provided with an antirust agent liquid storage tank with antirust agent nozzle.The present invention also provides the rust-proofing methods for using the equipment, and using antirust device and method of the invention, hot rolling magnetic yoke steel does not have corrosion for 72 hours under the conditions of 49 DEG C of temperature, relative humidity 98%, and rust-proof effect is good.The present invention solves the problems, such as that hot rolling chrome molybdenum low-alloy steel easily gets rusty.Therefore the invention belongs to the environmentally protective production technologies of steel, have good social benefit and environmental benefit.
Description
Technical Field
The invention belongs to the technical field of hot rolling, and particularly relates to a production process and a method for long-acting rust prevention of magnet yoke steel.
Background
As a basic industry of China, the steel industry is rapidly developed since the innovation is opened, and is always in a high-speed development stage in recent years, and the annual steel yield is increased by 15-22%.
The yoke steels are of various types and can be roughly divided into high manganese steels, medium and low alloy yoke steels, chrome molybdenum silicon manganese steels, cavitation erosion resistant steels, abrasion erosion resistant steels, special yoke steels and the like. Some general alloy steels such as stainless steel, bearing steel, alloy tool steel and alloy structural steel are also used as yoke steel under specific conditions, and due to their convenient sources and excellent properties, they also occupy a certain proportion in the use of yoke steel.
However, the surface of the magnetic yoke steel product is easy to rust, and a user often reflects the surface quality problem.
Disclosure of Invention
The invention aims to provide a production process scheme for long-acting rust prevention of heating yoke steel according to the actual requirements of users, takes technical innovation as a main task, and actively deals with increasingly severe market environments.
The invention provides a long-acting antirust method and equipment for hot-rolled yoke steel.
The long-acting antirust equipment for the hot-rolled magnetic yoke steel sequentially comprises the following components in the moving direction of the hot-rolled magnetic yoke steel: the device comprises a No. 1 pinch roll, an upper rough brush roll, a lower rough brush roll, a No. 2 pinch roll, an upper fine brush roll, a lower fine brush roll, a No. 3 pinch roll, an antirust nozzle and a blowing nozzle; in addition, a rust inhibitor liquid storage tank is connected with the rust inhibitor nozzle.
Preferably, the first and second electrodes are formed of a metal,
the antirust agent nozzles are arranged in two rows and are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 45-90 degrees. The distance between the two rows of nozzles (the shortest distance) is 30-40 mm, and the injection pressure is 0.7-0.9 MPa.
The two rows of blowing nozzles are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 45-90 degrees.
And the antirust agent is filled in the antirust agent liquid storage tank and sprayed on the upper surface and the lower surface of the hot-rolled magnet yoke steel through the antirust agent nozzle.
The surface materials of the No. 1 pinch roll, the No. 2 pinch roll and the No. 3 pinch roll are polyurethane, the Shore hardness is 70-82, the diameter is 250-280 mm, the length is 2300-2450 mm, and the linear velocity of the roll is 0.2-1.1 m/s.
The diameter of the upper thick brush roller and the lower thick brush roller is 310-390 mm, the length of the upper thick brush roller and the lower thick brush roller is 2100-2250 mm, and the linear speed of the upper thick brush roller and the lower thick brush roller is 5.2-7.3 m/s. The upper coarse brush roller and the lower coarse brush roller can be made of hard abrasive wires such as silicon carbide.
The diameter of the upper and lower fine brush rollers is 450-580 mm, the length is 2080-2290 mm, and the linear velocity is 4.1-5.2 m/s. The upper and lower brushing rollers can be made of soft abrasive wires such as nylon.
The invention also provides a long-acting antirust method for the hot-rolled yoke steel, which is carried out by using the long-acting antirust equipment for the hot-rolled yoke steel and comprises the following steps:
s1 descaling roller shaft process segment: the No. 1 pinch roll pushes the annealed hot-rolled magnetic yoke steel to pass through the upper and lower rough brush rolls, and the upper and lower rough brush rolls grind and brush the upper and lower surfaces of the hot-rolled magnetic yoke steel to remove coarse particles; the No. 2 pinch roll pushes the hot-rolled magnetic yoke steel to enter the upper and lower fine brush rolls, and the upper and lower fine brush rolls remove residual dust on the upper and lower surfaces of the hot-rolled magnetic yoke steel;
s2 antirust agent spraying process section; the No. 3 pinch roll pushes the hot-rolled magnetic yoke steel to pass through a rust remover nozzle, and a rust remover liquid storage tank sprays a rust remover to the upper surface and the lower surface of the hot-rolled magnetic yoke steel through the rust remover nozzle;
s3 heating purge process stage: and (3) removing the residual rust remover on the surface of the hot-rolled magnetic yoke steel by heating and blowing the nozzle.
Wherein,
in the heating and blowing process section, the heating temperature is 70-100 ℃.
The hot-rolled yoke steel comprises the following elements in percentage by mass: 0.01 to 0.15, Mn: 1.2-2.10, P: 0.002 to 0.02, S: 0.001-0.008, Si: 0.1 to 0.3, and the balance Fe. The mechanical properties of the hot-rolled yoke steel are 650-820 MPa of yield strength and 700-1050 MPa of tensile strength.
The rust inhibitor is prepared by the following method: 1) preparing a phosphoric acid solution with the mass fraction of 0.5-15%; 2) adding citric acid and tannic acid into a phosphoric acid solution, wherein the concentration of the added citric acid is 150-390 mg/L, the concentration of the tannic acid is 230-340 mg/L, and stirring at the speed of 80-100 revolutions per minute for 20-70 minutes; 3) then putting the solution into a heating kettle, heating to 60-65 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 120-540 mg/L, stirring for 40-70 min after dropwise adding is finished, and stirring at the speed of 40-60 revolutions per minute; 4) and finally, cooling the temperature of the reaction kettle to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 3-17 mg/L, the stirring speed is 55-75 r/min, stirring for 20-40 min, and cooling to room temperature to form the antirust agent.
After the treatment by the process, the hot-rolled magnet yoke steel is free from corrosion in 72 hours at the temperature of 49 ℃ and the relative humidity of 98%, and the antirust effect is good.
The invention provides a long-acting rust-proof treatment scheme for hot-rolled yoke steel, and the technical scheme effectively solves the problem that the hot-rolled chromium-molybdenum low-alloy steel is easy to rust. Therefore, the invention belongs to the environment-friendly production process of steel and has good social benefit and environmental benefit.
Drawings
FIG. 1 is a production process diagram of the novel long-acting antirust hot rolled plate, which comprises a descaling roller shaft process section (S1), an antirust agent spraying process section (S2) and a heating purging process section (S3). The descaling roll shaft process section comprises a pinch roll 1, an upper rough brush roll 2, a lower rough brush roll 3, a pinch roll 2, an upper fine brush roll 4, a lower fine brush roll 5 and a pinch roll 3. The antirust agent spraying process section comprises an antirust agent nozzle 7 and an antirust agent liquid storage tank 6, and the heating and purging process section comprises a purging nozzle 8.
Detailed Description
For better understanding of the present invention, the contents of the present invention will be further illustrated with reference to the following examples, but the contents of the present invention are not limited to only the following examples.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, a long-term rust prevention apparatus for hot-rolled yoke steel sequentially includes, in accordance with a moving direction of the hot-rolled yoke steel: the device comprises a No. 1 pinch roll 1, an upper rough brush roll 2, a lower rough brush roll 2, a No. 2 pinch roll 3, an upper fine brush roll 4, a No. 3 pinch roll 5, an antirust nozzle 7 and a blowing nozzle 8; in addition, a rust inhibitor reservoir 6 is provided in communication with the rust inhibitor nozzle 7.
The antirust agent nozzles are arranged in two rows and are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 60 degrees. The distance between the two rows of nozzles (shortest distance) was 35mm, and the injection pressure was 0.7 MPa.
The blowing nozzles are arranged in two rows and are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 90 degrees.
And the antirust agent is filled in the antirust agent liquid storage tank and sprayed on the upper surface and the lower surface of the hot-rolled magnet yoke steel through the antirust agent nozzle.
The surface materials of the pinch roll No. 1, the pinch roll No. 2 and the pinch roll No. 3 are polyurethane, the Shore hardness is 73, the diameter is 260mm, the length is 2450mm, and the linear velocity of the rolls is 0.5 m/s.
The diameter of the upper rough brush roller and the lower rough brush roller is 380mm, the length is 2150mm, and the linear velocity is 6.1 m/s. The upper coarse brush roller and the lower coarse brush roller are made of silicon carbide abrasive wires.
The diameter of the upper and lower fine brush rolls is 485mm, the length is 2090mm, and the linear velocity is 4.7 m/s. The upper and lower finish brush rolls are made of nylon abrasive wires.
The device is used for carrying out rust prevention treatment on the hot-rolled yoke steel, and the hot-rolled yoke steel comprises the following elements in percentage by mass: c: 0.12, Mn: 1.7, P: 0.007, S: 0.006, Si: 0.1 and the balance of Fe. The mechanical properties of the hot-rolled magnetic yoke steel are that the yield strength is 670MPa and the tensile strength is 820 MPa.
The rust prevention treatment comprises the following steps:
s1 descaling roller shaft process segment: the No. 1 pinch roll pushes the annealed hot-rolled magnetic yoke steel to pass through the upper and lower rough brush rolls, and the upper and lower rough brush rolls grind and brush the upper and lower surfaces of the hot-rolled magnetic yoke steel to remove coarse particles; the No. 2 pinch roll pushes the hot-rolled magnetic yoke steel to enter the upper and lower fine brush rolls, and the upper and lower fine brush rolls remove residual dust on the upper and lower surfaces of the hot-rolled magnetic yoke steel;
s2 antirust agent spraying process section; the No. 3 pinch roll pushes the hot-rolled magnetic yoke steel to pass through a rust remover nozzle, and a rust remover liquid storage tank sprays a rust remover to the upper surface and the lower surface of the hot-rolled magnetic yoke steel through the rust remover nozzle;
s3 heating purge process stage: and (3) removing the residual rust remover on the surface of the hot-rolled magnetic yoke steel by heating and blowing the hot-rolled magnetic yoke steel through a nozzle, wherein the heating temperature is 75 ℃.
Wherein the antirust agent is prepared by the following method: 1) preparing a phosphoric acid solution with the mass fraction of 11%; 2) adding citric acid and tannic acid into phosphoric acid solution, wherein the concentration of the added citric acid is 270mg/L, the concentration of the added tannic acid is 295mg/L, and stirring at the speed of 85 revolutions per minute for 35 minutes; 3) then putting the solution into a heating kettle, heating to 62 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 345mg/L, and stirring for 45min after dropwise adding is finished, wherein the stirring speed is 55 revolutions per minute; 4) and finally, cooling the temperature of the reaction kettle to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 7mg/L, the stirring speed is 75 r/min, stirring for 25min, and cooling to room temperature to form the antirust agent.
After the treatment by the process, the hot-rolled yoke steel has no corrosion for 72 hours under the conditions of 49 ℃ and 98% relative humidity.
Example 2
A long-acting rust-proof equipment for hot-rolled yoke steel sequentially comprises the following components in the moving direction of the hot-rolled yoke steel: the device comprises a No. 1 pinch roll, an upper rough brush roll, a lower rough brush roll, a No. 2 pinch roll, an upper fine brush roll, a lower fine brush roll, a No. 3 pinch roll, an antirust nozzle and a blowing nozzle; in addition, a rust inhibitor liquid storage tank is connected with the rust inhibitor nozzle.
The antirust agent nozzles are arranged in two rows and are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 75 degrees. The distance between the two rows of nozzles (shortest distance) was 38mm, and the injection pressure was 0.9 MPa.
The blowing nozzles are arranged in two rows and are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 90 degrees.
And the antirust agent is filled in the antirust agent liquid storage tank and sprayed on the upper surface and the lower surface of the hot-rolled magnet yoke steel through the antirust agent nozzle.
The surface materials of the pinch roll No. 1, the pinch roll No. 2 and the pinch roll No. 3 are polyurethane, the Shore hardness is 80, the diameter is 270mm, the length is 2450mm, and the linear velocity of the rolls is 1.0 m/s.
The diameter of the upper and lower rough brush rollers is 375mm, the length is 2100mm, and the linear velocity is 7.1 m/s. The upper coarse brush roller and the lower coarse brush roller are made of silicon carbide abrasive wires.
The diameter of the upper and lower fine brush rollers is 510mm, the length is 2190mm, and the linear velocity is 4.8 m/s. The upper and lower finish brush rolls are made of nylon abrasive wires.
The device is used for carrying out rust prevention treatment on the hot-rolled yoke steel, and the hot-rolled yoke steel comprises the following elements in percentage by mass: c: 0.07, Mn: 2.10, P: 0.015, S: 0.006, Si: 0.3, and the balance of Fe. The mechanical properties of the hot-rolled magnetic yoke steel are that the yield strength is 810MPa and the tensile strength is 1020 MPa.
The rust prevention treatment comprises the following steps:
s1 descaling roller shaft process segment: the No. 1 pinch roll pushes the annealed hot-rolled magnetic yoke steel to pass through the upper and lower rough brush rolls, and the upper and lower rough brush rolls grind and brush the upper and lower surfaces of the hot-rolled magnetic yoke steel to remove coarse particles; the No. 2 pinch roll pushes the hot-rolled magnetic yoke steel to enter the upper and lower fine brush rolls, and the upper and lower fine brush rolls remove residual dust on the upper and lower surfaces of the hot-rolled magnetic yoke steel;
s2 antirust agent spraying process section; the No. 3 pinch roll pushes the hot-rolled magnetic yoke steel to pass through a rust remover nozzle, and a rust remover liquid storage tank sprays a rust remover to the upper surface and the lower surface of the hot-rolled magnetic yoke steel through the rust remover nozzle;
s3 heating purge process stage: and (3) removing the residual rust remover on the surface of the hot-rolled magnetic yoke steel by heating and blowing the hot-rolled magnetic yoke steel through a nozzle, wherein the heating temperature is 75 ℃.
Wherein the antirust agent is prepared by the following method: 1) preparing a phosphoric acid solution with the mass fraction of 5.2%; 2) adding citric acid and tannic acid into phosphoric acid solution, wherein the concentration of the added citric acid is 230mg/L and the concentration of the added tannic acid is 265mg/L, and stirring at the speed of 95 r/min for 35 min; 3) then putting the solution into a heating kettle, heating to 60 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 490mg/L, and stirring for 45min after dropwise adding is finished, wherein the stirring speed is 40 revolutions per minute; 4) and finally, cooling the temperature of the reaction kettle to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 16mg/L, the stirring speed is 70 r/min, stirring for 40min, and cooling to room temperature to form the antirust agent.
After the treatment by the process, the hot-rolled yoke steel has no corrosion for 72 hours under the conditions of 49 ℃ and 98% relative humidity.
Example 3
Example 3 is substantially the same as example 2 except that the rust remover used is prepared by the following steps: 1) preparing a phosphoric acid solution with the mass fraction of 5.2%; 2) adding citric acid and tannic acid into phosphoric acid solution, wherein the concentration of the added citric acid is 230mg/L and the concentration of the added tannic acid is 265mg/L, and stirring at the speed of 95 r/min for 35 min; 3) then putting the solution into a heating kettle, heating to 60 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 490mg/L, and stirring for 45min after dropwise adding is finished, wherein the stirring speed is 40 revolutions per minute; 4) cooling to room temperature to form the antirust agent.
After the treatment by the process, a small amount of corrosion of the hot-rolled yoke steel starts to occur after 63 hours under the conditions that the temperature is 49 ℃ and the relative humidity is 98%.
Example 4
Example 4 is substantially the same as example 2 except that the rust remover used is prepared by the following steps: 1) preparing a phosphoric acid solution with the mass fraction of 5.2%; 2) adding citric acid and tannic acid into phosphoric acid solution, wherein the concentration of the added citric acid is 230mg/L and the concentration of the added tannic acid is 265mg/L, and stirring at the speed of 95 r/min for 35 min; 3) and then putting the solution into a heating kettle, heating to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 16mg/L, the stirring speed is 70 r/min, stirring for 40min, and cooling to room temperature to form the antirust agent.
After the treatment by the process, a small amount of corrosion of the hot-rolled yoke steel starts to occur after 59 hours under the conditions that the temperature is 49 ℃ and the relative humidity is 98%.
Example 5
Example 5 is substantially the same as example 2 except that the rust remover used is prepared by the following steps: 1) preparing a phosphoric acid solution with the mass fraction of 5.2%; 2) adding tannic acid into the phosphoric acid solution, wherein the concentration of the tannic acid after the tannic acid is added is 265mg/L, and stirring for 35 minutes at the speed of 95 revolutions per minute; 3) then putting the solution into a heating kettle, heating to 60 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 490mg/L, and stirring for 45min after dropwise adding is finished, wherein the stirring speed is 40 revolutions per minute; 4) and finally, cooling the temperature of the reaction kettle to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 16mg/L, the stirring speed is 70 r/min, stirring for 40min, and cooling to room temperature to form the antirust agent.
After the treatment by the process, a small amount of corrosion of the hot-rolled magnetic yoke steel starts to occur after 65 hours under the conditions that the temperature is 49 ℃ and the relative humidity is 98%.
Example 6
Example 6 is substantially the same as example 2 except that the rust remover used is prepared by the following steps: 1) preparing a phosphoric acid solution with the mass fraction of 5.2%; 2) adding citric acid into the phosphoric acid solution, wherein the concentration of the added citric acid is 230mg/L, and stirring at the speed of 95 revolutions per minute for 35 minutes; 3) then putting the solution into a heating kettle, heating to 60 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 490mg/L, and stirring for 45min after dropwise adding is finished, wherein the stirring speed is 40 revolutions per minute; 4) and finally, cooling the temperature of the reaction kettle to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 16mg/L, the stirring speed is 70 r/min, stirring for 40min, and cooling to room temperature to form the antirust agent.
After the treatment by the process, a small amount of corrosion of the hot-rolled magnetic yoke steel starts to occur after 70 hours under the conditions that the temperature is 49 ℃ and the relative humidity is 98%.
Of course, those skilled in the art should recognize that the above-described embodiments are illustrative only, and not limiting, and that changes and modifications can be made within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The long-acting antirust equipment for the hot-rolled magnetic yoke steel is characterized by sequentially comprising the following components in the moving direction of the hot-rolled magnetic yoke steel: the device comprises a No. 1 pinch roll, an upper rough brush roll, a lower rough brush roll, a No. 2 pinch roll, an upper fine brush roll, a lower fine brush roll, a No. 3 pinch roll, an antirust nozzle and a blowing nozzle; in addition, a rust inhibitor liquid storage tank is connected with the rust inhibitor nozzle.
2. The long-acting rust prevention apparatus for hot-rolled yoke steel according to claim 1, characterized in that: the antirust agent spray nozzles are arranged in two rows and are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, the included angle between the spray nozzles and the moving direction of the hot-rolled magnetic yoke steel is 45-90 degrees, the distance between the two rows of spray nozzles is 30-40 mm, and the injection pressure is 0.7-0.9 MPa.
3. The long-acting rust prevention apparatus for hot-rolled yoke steel according to claim 1, characterized in that: the two rows of blowing nozzles are respectively arranged on the upper side and the lower side of the hot-rolled magnetic yoke steel, and the included angle between the nozzles and the moving direction of the hot-rolled magnetic yoke steel is 45-90 degrees.
4. The long-acting rust prevention apparatus for hot-rolled yoke steel according to claim 1, characterized in that: the surface materials of the No. 1 pinch roll, the No. 2 pinch roll and the No. 3 pinch roll are polyurethane, the Shore hardness is 70-82, the diameter is 250-280 mm, the length is 2300-2450 mm, and the linear velocity of the roll is 0.2-1.1 m/s.
5. The long-acting rust prevention apparatus for hot-rolled yoke steel according to claim 1, characterized in that: the diameter of the upper thick brush roller and the lower thick brush roller is 310-390 mm, the length is 2100-2250 mm, and the linear speed is 5.2-7.3 m/s; the upper coarse brush roller and the lower coarse brush roller are made of hard abrasive wires.
6. The long-acting rust prevention apparatus for hot-rolled yoke steel according to claim 1, characterized in that: the diameter of the upper and lower fine brush rollers is 450-580 mm, the length is 2080-2290 mm, and the linear velocity is 4.1-5.2 m/s; the upper and lower brushing rolls are made of soft abrasive wires.
7. A long-acting rust prevention method for hot-rolled yoke steel, which is carried out using the long-acting rust prevention apparatus for hot-rolled yoke steel according to any one of claims 1 to 6, comprising the steps of:
s1 descaling roller shaft process segment: the No. 1 pinch roll pushes the annealed hot-rolled magnetic yoke steel to pass through the upper and lower rough brush rolls, and the upper and lower rough brush rolls grind and brush the upper and lower surfaces of the hot-rolled magnetic yoke steel to remove coarse particles; the No. 2 pinch roll pushes the hot-rolled magnetic yoke steel to enter the upper and lower fine brush rolls, and the upper and lower fine brush rolls remove residual dust on the upper and lower surfaces of the hot-rolled magnetic yoke steel;
s2 antirust agent spraying process section; the No. 3 pinch roll pushes the hot-rolled magnetic yoke steel to pass through a rust remover nozzle, and a rust remover liquid storage tank sprays a rust remover to the upper surface and the lower surface of the hot-rolled magnetic yoke steel through the rust remover nozzle;
s3 heating purge process stage: and (3) removing the residual rust remover on the surface of the hot-rolled magnetic yoke steel by heating and blowing the nozzle.
8. The rust removing method according to claim 6, characterized in that: in the heating and blowing process section, the heating temperature is 70-100 ℃.
9. The rust removing method according to claim 6, characterized in that: the hot-rolled yoke steel comprises the following elements in percentage by mass: 0.01 to 0.15, Mn: 1.2-2.10, P: 0.002 to 0.02, S: 0.001-0.008, Si: 0.1 to 0.3, and the balance being Fe, wherein the mechanical properties of the hot-rolled yoke steel are yield strength of 650 to 820MPa, and tensile strength of 700 to 1050 MPa.
10. The rust removing method according to claim 6, characterized in that: the rust inhibitor is prepared by the following method: 1) preparing a phosphoric acid solution with the mass fraction of 0.5-15%; 2) adding citric acid and tannic acid into a phosphoric acid solution, wherein the concentration of the added citric acid is 150-390 mg/L, the concentration of the tannic acid is 230-340 mg/L, and stirring at the speed of 80-100 revolutions per minute for 20-70 minutes; 3) then putting the solution into a heating kettle, heating to 60-65 ℃, dropwise adding sodium tungstate under stirring, wherein the concentration of the added sodium tungstate is 120-540 mg/L, stirring for 40-70 min after dropwise adding is finished, and stirring at the speed of 40-60 revolutions per minute; 4) and finally, cooling the temperature of the reaction kettle to 45 ℃, adding benzotriazole under stirring, wherein the concentration of the added benzotriazole is 3-17 mg/L, the stirring speed is 55-75 r/min, stirring for 20-40 min, and cooling to room temperature to form the antirust agent.
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