CN112007838A - Surface processing system and treatment process for acid-resistant and corrosion-resistant steel pipe - Google Patents
Surface processing system and treatment process for acid-resistant and corrosion-resistant steel pipe Download PDFInfo
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- CN112007838A CN112007838A CN202010707679.3A CN202010707679A CN112007838A CN 112007838 A CN112007838 A CN 112007838A CN 202010707679 A CN202010707679 A CN 202010707679A CN 112007838 A CN112007838 A CN 112007838A
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- 239000002253 acid Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000010935 stainless steel Substances 0.000 title abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 128
- 239000010959 steel Substances 0.000 claims abstract description 128
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 26
- 238000010926 purge Methods 0.000 claims abstract description 21
- 238000005097 cold rolling Methods 0.000 claims abstract description 14
- 238000005488 sandblasting Methods 0.000 claims abstract description 14
- 238000005496 tempering Methods 0.000 claims abstract description 14
- 238000002791 soaking Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000007865 diluting Methods 0.000 claims abstract description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000007921 spray Substances 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000006223 plastic coating Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000007605 air drying Methods 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 12
- 230000007547 defect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
- B05D2202/15—Stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2254/00—Tubes
- B05D2254/04—Applying the material on the interior of the tube
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Heat Treatment Of Articles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spray Control Apparatus (AREA)
Abstract
The invention relates to a surface processing system and a treatment process of an acid-resistant and corrosion-resistant steel pipe, which comprises the following process steps: firstly, polishing a steel pipe by using a polishing device, then performing sand blasting treatment on the inner surface of the steel pipe by using a dry sand blasting machine, purging the inside and the outside of the steel pipe by using a purging device, then performing cold rolling on the steel pipe by using cold rolling mill equipment, then performing tempering treatment on the steel pipe by using tempering treatment equipment, namely heating to 600-700 ℃, preserving heat for 2-4 hours, then naturally cooling to room temperature, diluting hydrochloric acid to 20% of concentration, soaking the steel pipe in a hydrochloric acid soaking box, performing anti-rust treatment, and then naturally air-drying the steel pipe; and heating the outer surface of the air-dried steel pipe to 170-210 ℃ through a medium-frequency preheating device, and finally spraying epoxy resin on the inner surface of the heated steel pipe by using a spraying device. The invention relates to a surface processing system and a treatment process of an acid-resistant and corrosion-resistant steel pipe, which improve the acid-resistant and corrosion-resistant performance of the steel pipe and improve the production efficiency of the processing system.
Description
Technical Field
The invention relates to a surface processing system and a treatment process of an acid-resistant and corrosion-resistant steel pipe.
Background
Steel pipes are not only used for transporting fluids and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, but also are economical steels. The steel pipe is used for manufacturing the building structure net rack, the supporting column and the mechanical support, so that the weight can be reduced, the metal can be saved by 20-40%, and the industrialized mechanized construction can be realized. The steel pipe is used for manufacturing the highway bridge, so that steel can be saved, the construction is simplified, the area of a coating protective layer can be greatly reduced, and the investment and the maintenance cost are saved.
The corrosion resistance of the steel pipe refers to that the steel pipe is subjected to chemical or electrochemical reaction to generate corrosion under the influence of a use environment and a conveying medium when the steel pipe is used as a medium in use and transportation, the acid resistance of the steel pipe refers to the corrosion resistance of weak corrosion media such as air, steam and water and chemical etching media such as acid, alkali and salt, and the acid resistance and corrosion resistance of the steel pipe are important.
The prior steel pipe processing technology and system have the following defects:
1. the acid resistance and the corrosion resistance of the steel pipe cannot meet the installation requirement, and the acid resistance and the corrosion resistance of the steel pipe need to be further improved;
2. after the steel pipe is pretreated, internal blowing and external blowing are needed, and the internal blowing process and the external blowing process are generally carried out separately, so that the efficiency is low;
3. the inner spraying device of the steel pipe needs to be matched and hoisted by a plurality of persons for production, and the production mode has the defects of long time consumption, high energy consumption, large occupied space, environmental pollution and the like.
Therefore, a surface processing system and a treatment process for the acid-resistant and corrosion-resistant steel pipe, which can effectively improve the acid-resistant and corrosion-resistant performance of the steel pipe and improve the purging and internal coating efficiency of the steel pipe, are urgently needed.
Disclosure of Invention
The invention aims to overcome the defects and provide a method
The purpose of the invention is realized as follows:
the surface treatment process of the acid-resistant anticorrosive steel pipe comprises the following process steps:
step 1: polishing the steel pipe by using a polishing device;
step 2: carrying out sand blasting treatment on the inner surface of the steel pipe by using a dry sand blasting machine;
and step 3: purging the inside and outside of the steel pipe by using a purging device;
and 4, step 4: cold rolling the steel pipe by using cold rolling mill equipment;
and 5: tempering the steel pipe by using tempering equipment, namely heating the steel pipe to 600-700 ℃, preserving the heat for 2-4 hours, and naturally cooling the steel pipe to room temperature;
step 6: diluting hydrochloric acid to a concentration of 20%, adding the steel pipe into a hydrochloric acid soaking box for soaking, and performing antirust treatment;
and 7: naturally drying the steel pipe;
and 8: heating the outer surface of the air-dried steel pipe to 170-210 ℃ through a medium-frequency preheating device;
and step 9: and spraying epoxy resin on the inner surface of the heated steel pipe by using a spraying device.
A surface processing system of an acid-resistant and corrosion-resistant steel pipe comprises a grinding device, a dry sand blasting machine, a purging device, cold rolling mill equipment, tempering treatment equipment, a hydrochloric acid soaking box, a medium-frequency preheating device and a spraying device which are arranged from front to back;
the blowing device comprises two arc-shaped supporting blocks which are arranged in parallel front and back, steel pipes are erected on the two arc-shaped supporting blocks, slide rails are arranged at the bottoms of the arc-shaped supporting blocks, and the bottoms of the arc-shaped supporting blocks are arranged on the slide rails in a sliding mode through pulleys; a hydraulic cylinder is arranged on the left side or the right side of the arc-shaped supporting block, and a piston rod of the hydraulic cylinder is fixedly connected with the arc-shaped supporting block and pushes the arc-shaped supporting block to move left and right on the sliding rail; a support table is arranged above the steel pipe, a long-distance through hole which is consistent with the length direction of the steel pipe is formed in the support table right above the steel pipe, the length of the long-distance through hole is larger than that of the steel pipe, fan tracks which are consistent with the length direction of the steel pipe are arranged on the left side and the right side of the long-distance through hole, a fan trolley is arranged on the fan tracks in a sliding mode and runs on the fan tracks along the length direction of the steel pipe, a fan is arranged on the fan trolley, and a blowing port of the; the end part of the steel pipe is provided with a blowpipe, and high-pressure compressed air is introduced into the blowpipe;
the spraying device comprises an inner coating mechanism and a rotating device, wherein a steel pipe is erected on the rotating device and rotates on the rotating device; the inner plastic coating mechanism comprises a guide rail which is arranged in front of the steel pipe and is consistent with the length direction of the steel pipe, a stock bin trolley is arranged on the guide rail in a sliding mode, and the stock bin trolley slides back and forth on the guide rail; the storage bin trolley is provided with a storage bin, the storage bin is internally provided with a spray pipe, the length of the spray pipe extending out of the storage bin is greater than the length of the steel pipe, the length direction of the spray pipe is consistent with the length direction of the steel pipe, and one end of the spray pipe, far away from the storage bin, is provided with a spray head.
Compared with the prior art, the invention has the beneficial effects that:
1. the surface treatment process of the acid-resistant and corrosion-resistant steel pipe comprises the steps of pickling the steel pipe to enhance the acid resistance of the steel pipe, and spraying the epoxy resin on the inner surface of the steel pipe for corrosion protection, so that the acid resistance and the corrosion resistance of the steel pipe are improved;
2. the purging device in the surface processing system of the acid-resistant and corrosion-resistant steel pipe simultaneously purges the outer surface and the inner surface of the steel pipe, so that purging efficiency is improved;
3. the spraying device in the surface processing system of the acid-resistant and corrosion-resistant steel pipe moves on the guide rail through the moving trolley, and the spraying pipe on the moving trolley performs internal coating on the rotating steel pipe, so that automatic continuous production is realized, and the production efficiency is high; reasonable layout and small occupied area.
Drawings
FIG. 1 is a flow chart of the surface treatment process of the acid-resistant and corrosion-resistant steel pipe of the present invention.
FIG. 2 is a schematic view of a surface processing system for acid-and corrosion-resistant steel pipes according to the present invention.
Fig. 3 is a schematic structural view of the purging device in fig. 2.
Fig. 4 is a schematic view of the arcuate support block and hydraulic cylinder of fig. 3.
Fig. 5 is a schematic structural view of the spray coating device in fig. 2.
In the figure: the device comprises a purging device 1, an arc-shaped supporting block 1.1, a sliding rail 1.2, a hydraulic cylinder 1.3, a supporting table 1.4, a fan 1.5, a fan track 1.6, a fan trolley 1.7, a strip-shaped through hole 1.8, a blowing pipe 1.9, a spraying device 2, an internal coating mechanism 2.1, a storage bin 2.2, a storage bin trolley 2.3, a spraying pipe 2.4, a spray nozzle 2.5, a rotating device 2.6, a guide rail 2.7, a steel pipe 3, a polishing device 4, a dry sand blasting machine 5, a cold rolling mill device 6, a tempering treatment device 7, a hydrochloric acid soaking box 8 and an intermediate frequency preheating device 9.
Detailed Description
Referring to fig. 1 to 5, the invention relates to a surface processing system and a treatment process of an acid-resistant and corrosion-resistant steel pipe, wherein the process comprises the following steps:
step 1: polishing the steel pipe by using a polishing device 4;
step 2: carrying out sand blasting treatment on the inner surface of the steel pipe by using a dry sand blasting machine 5;
and step 3: purging the inside and outside of the steel pipe by using a purging device 1;
and 4, step 4: cold rolling the steel pipe by using cold rolling mill equipment 6;
and 5: tempering the steel pipe by using tempering equipment 7, namely heating the steel pipe to 600-700 ℃, preserving the heat for 2-4 hours, and naturally cooling the steel pipe to room temperature;
step 6: diluting hydrochloric acid to a concentration of 20%, adding the steel pipe into a hydrochloric acid soaking box 8, soaking, and performing antirust treatment;
and 7: naturally drying the steel pipe;
and 8: heating the outer surface of the air-dried steel pipe to 170-210 ℃ through a medium-frequency preheating device 9;
and step 9: the epoxy resin is sprayed on the inner surface of the heated steel pipe by the spraying device 2.
The surface processing system based on the acid-resistant anticorrosive steel pipe comprises a grinding device 4, a dry sand blasting machine 5, a purging device 1, cold rolling mill equipment 6, tempering treatment equipment 7, a hydrochloric acid soaking box 8, a medium-frequency preheating device 9 and a spraying device 2 which are arranged from front to back;
the grinding device 4 is used for grinding the steel pipe 3;
the dry sand blasting machine 5 is used for carrying out sand blasting treatment on the steel pipe 3;
the purging device 1 is used for purging impurity fragments on the inner surface and the outer surface of the steel pipe 3, the purging device 1 comprises two arc-shaped supporting blocks 1.1 which are arranged in parallel front and back, the steel pipe 3 is erected on the two arc-shaped supporting blocks 1.1, a sliding rail 1.2 is arranged at the bottom of each arc-shaped supporting block 1.1, and the bottom of each arc-shaped supporting block 1.1 is arranged on the corresponding sliding rail 1.2 in a sliding manner through a pulley; a hydraulic cylinder 1.3 is arranged on the left side or the right side of the arc-shaped supporting block 1.1, a piston rod of the hydraulic cylinder 1.3 is fixedly connected with the arc-shaped supporting block 1.1, and the arc-shaped supporting block 1.1 is pushed to move left and right on a sliding rail 1.2; a support table 1.4 is arranged above the steel pipe 3, a long-distance through hole 1.8 which is consistent with the length direction of the steel pipe 3 is formed in the support table 1.4 right above the steel pipe 3, the long distance of the long-distance through hole 1.8 is larger than the length of the steel pipe 3, fan tracks 1.6 which are consistent with the length direction of the steel pipe 3 are arranged on the left side and the right side of the long-distance through hole 1.8, a fan trolley 1.7 is arranged on the fan track 1.6 in a sliding mode and runs on the fan track 1.6 along the length direction of the steel pipe 3, a fan 1.5 is arranged on the fan trolley 1.7, a blowing port of the fan 1.5 faces towards the steel pipe 3, the fan 1.5 blows air to the outer surface of the steel; the end part of the steel pipe 3 is provided with a blowpipe 1.9, and high-pressure compressed air is introduced into the blowpipe 1.9 to blow away the chips in the steel pipe 3; after the steel pipe 3 is placed on the arc-shaped supporting block 1.1, the piston rod of the hydraulic cylinder 1.3 pushes the arc-shaped supporting block 1.1 to the position below the strip-shaped through hole 1.8, and after purging is finished, the piston rod of the hydraulic cylinder 1.3 pushes the arc-shaped supporting block 1.1 out;
the cold rolling mill equipment 6 is used for cold rolling the steel pipe 3;
the tempering equipment 7 is used for tempering the steel pipe 3;
the hydrochloric acid soaking box is used for 8 carrying out acid-washing rust-proof treatment on the steel pipe 3;
the intermediate frequency preheating device 9 is used for heating the steel pipe 3;
the spraying device 2 is used for spraying epoxy resin on the inner surface of the steel pipe; the spraying device 2 comprises an inner coating mechanism 2.1 and a rotating device 2.6, a steel pipe 3 is erected on the rotating device 2.6, and the steel pipe 3 rotates on the rotating device 2.6; the inner plastic coating mechanism 2.1 comprises a guide rail 2.7 which is arranged in front of the steel pipe 3 and has the same length direction with the steel pipe 3, a stock bin trolley 2.3 is arranged on the guide rail 2.7 in a sliding manner, and the stock bin trolley 2.3 slides back and forth on the guide rail 2.7; the storage bin 2.2 is arranged on the storage bin trolley 2.3, the spraying pipe 2.4 is arranged in the storage bin 2.2, the length of the spraying pipe 2.4 extending out of the storage bin 2.2 is larger than that of the steel pipe 3, the length direction of the spraying pipe 2.4 is consistent with that of the steel pipe 3, and a spray head 2.5 is arranged at one end, far away from the storage bin 2.2, of the spraying pipe 2.4; the feed bin dolly 2.3 takes feed bin 2.2 and spray pipe 2.4 to move to the direction of steel pipe 3 on guide rail 2.7, and spray pipe 2.4 stretches into the inside of steel pipe 3, and shower nozzle 2.5 carries out interior coating epoxy to steel pipe 3 that is rotating.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (2)
1. The surface treatment process of the acid-resistant anticorrosive steel pipe is characterized by comprising the following steps of: the process comprises the following steps:
step 1: polishing the steel pipe by using a polishing device (4);
step 2: carrying out sand blasting treatment on the inner surface of the steel pipe by using a dry sand blasting machine (5);
and step 3: purging the inside and outside of the steel pipe by using a purging device (1);
and 4, step 4: cold rolling the steel pipe by using cold rolling mill equipment (6);
and 5: tempering the steel pipe by using tempering equipment (7), namely heating the steel pipe to 600-700 ℃, preserving the heat for 2-4 hours, and naturally cooling the steel pipe to room temperature;
step 6: diluting hydrochloric acid to a concentration of 20%, adding the steel pipe into a hydrochloric acid soaking box (8) for soaking, and performing rust prevention treatment;
and 7: naturally drying the steel pipe;
and 8: heating the outer surface of the air-dried steel pipe to 170-210 ℃ through a medium-frequency preheating device (9);
and step 9: and spraying epoxy resin on the inner surface of the heated steel pipe by using a spraying device (2).
2. The utility model provides a surface machining system of acid-resisting anticorrosive steel pipe which characterized in that: comprises a grinding device (4), a dry sand blasting machine (5), a purging device (1), cold rolling mill equipment (6), tempering treatment equipment (7), a hydrochloric acid soaking box (8), an intermediate frequency preheating device (9) and a spraying device (2) which are arranged from front to back;
the blowing device (1) comprises two arc-shaped supporting blocks (1.1) which are arranged in parallel front and back, a steel pipe (3) is erected on the two arc-shaped supporting blocks (1.1), a sliding rail (1.2) is arranged at the bottom of each arc-shaped supporting block (1.1), and the bottom of each arc-shaped supporting block (1.1) is arranged on the corresponding sliding rail (1.2) in a sliding mode through a pulley; a hydraulic cylinder (1.3) is arranged on the left side or the right side of the arc-shaped supporting block (1.1), a piston rod of the hydraulic cylinder (1.3) is fixedly connected with the arc-shaped supporting block (1.1), and the arc-shaped supporting block (1.1) is pushed to move left and right on the sliding rail (1.2); a support table (1.4) is arranged above the steel pipe (3), a long-distance through hole (1.8) which is consistent with the length direction of the steel pipe (3) is formed in the support table (1.4) right above the steel pipe (3), the length of the long-distance through hole (1.8) is larger than that of the steel pipe (3), fan tracks (1.6) which are consistent with the length direction of the steel pipe (3) are arranged on the left side and the right side of the long-distance through hole (1.8), a fan trolley (1.7) is arranged on the fan tracks (1.6) in a sliding mode and runs on the fan tracks (1.6) along the length direction of the steel pipe (3), a fan (1.5) is arranged on the fan trolley (1.7), and a blowing port of the fan (1.5) faces towards the steel pipe (; the end part of the steel pipe (3) is provided with a blowpipe (1.9), and high-pressure compressed air is introduced into the blowpipe (1.9);
the spraying device (2) comprises an inner coating mechanism (2.1) and a rotating device (2.6), a steel pipe (3) is erected on the rotating device (2.6), and the steel pipe (3) rotates on the rotating device (2.6); the inner plastic coating mechanism (2.1) comprises a guide rail (2.7) which is arranged in front of the steel pipe (3) and is consistent with the length direction of the steel pipe (3), a stock bin trolley (2.3) is arranged on the guide rail (2.7) in a sliding manner, and the stock bin trolley (2.3) slides back and forth on the guide rail (2.7); be provided with feed bin (2.2) on feed bin dolly (2.3), be provided with spray tube (2.4) in feed bin (2.2), the length that spray tube (2.4) stretched out feed bin (2.2) is greater than the length of steel pipe (3), and the length direction of spray tube (2.4) is unanimous with the length direction of steel pipe (3), and spray tube (2.4) is equipped with shower nozzle (2.5) in the one end of keeping away from feed bin (2.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707679.3A CN112007838A (en) | 2020-07-22 | 2020-07-22 | Surface processing system and treatment process for acid-resistant and corrosion-resistant steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707679.3A CN112007838A (en) | 2020-07-22 | 2020-07-22 | Surface processing system and treatment process for acid-resistant and corrosion-resistant steel pipe |
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| CN112007838A true CN112007838A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010707679.3A Pending CN112007838A (en) | 2020-07-22 | 2020-07-22 | Surface processing system and treatment process for acid-resistant and corrosion-resistant steel pipe |
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| CN112934646A (en) * | 2021-01-26 | 2021-06-11 | 南京绪风科技有限公司 | Chemical anti-corrosion steel pipe pipeline manufacturing process |
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