CN109306493A - A kind of UF6Acid wash passivation process of surface treatment in storage process - Google Patents

A kind of UF6Acid wash passivation process of surface treatment in storage process Download PDF

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Publication number
CN109306493A
CN109306493A CN201710617798.8A CN201710617798A CN109306493A CN 109306493 A CN109306493 A CN 109306493A CN 201710617798 A CN201710617798 A CN 201710617798A CN 109306493 A CN109306493 A CN 109306493A
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China
Prior art keywords
container
pickling
derusting
acid
sandblasting
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Granted
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CN201710617798.8A
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Chinese (zh)
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CN109306493B (en
Inventor
吴来健
岳礼
段红涛
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Sino Nuclear Jiahua Equipment Manufacturing Corp
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Sino Nuclear Jiahua Equipment Manufacturing Corp
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    • 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
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • 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
    • C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • 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
    • C23C22/78—Pretreatment of the material to be coated
    • 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

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The present invention proposes a kind of UF6Acid wash passivation process of surface treatment in storage process, 1) treat weld assembly progress derusting by sandblasting；2) connected components to be welded after derusting carry out alkali cleaning oil removing；3) connected components to be welded after washing with water alkali cleaning oil removing carry out acid pickling and rust removing after cleaning；4) components welding molding to be welded, is heat-treated；Whole pickling is carried out after container heat treatment；5) container carries out inner surface Passivation Treatment after whole pickling；6) container after being passivated is passed through nitrogen, with being dried with nitrogen inside container；7) container outer surface after being dried with nitrogen carries out derusting by sandblasting, examines derusting effect；8) it paints after outer surface derusting is qualified by prior art.Preferably: step 1) derusting by sandblasting mode of operation is manual air sandblasting, and abrasive material is 80 mesh quartz sands.The beneficial effects of the present invention are: concise in technology, consumption of raw materials is few, at low cost, high treating effect, and container cleaning inside degree is high, does not pollute UF6。

Description

A kind of UF6Acid wash passivation process of surface treatment in storage process
Technical field
The invention belongs to the shipping container fields of radioactivity material, are related to the surface treatment of rapidoprint, and particularly one Kind UF6Acid wash passivation process of surface treatment in storage process.
Background technique
Currently, in the world for storing and transporting UF6Container mainly have 1S, 2S, 5A, 5B, 30B, 48X, 48Y etc., wherein 30B, 48X is the most frequently used.Container types of the country for storing and transporting hex have 1L container, 60L container, 300L container, 740L container, 1000L container, 3m3Container etc..The most commonly used is 740L and 3m3Container, the UF that container inside contains6Medium character be Hypertoxic deep-etching, while there is radioactivity, UF6The cleannes of container are a problem very serious for nuclear industry, because For UF6It is reacted strongly with various hydrocarbon ils and some impurity, can set off an explosion, also will affect UF6Process resulting uranium purity. Due to the particularity of nuclear industry technology, a large amount of technologies therein are that open source information can not find out, and need relevant enterprise, research department The technology of independent research oneself, UF6Storage be also in this way, although the shape of inlet tank, construction, it is readily seen that but its add The technology that work process uses can not learn that this just needs our autonomous innovations, walk out the technology path of oneself.
Summary of the invention
The purpose of the invention is to overcome problems of the prior art, a kind of UF is provided6Storage is processed Acid wash passivation process of surface treatment in journey.
The technical scheme adopted by the invention is that: a kind of UF6Acid wash passivation surface treatment in storage process Technique,
1) it treats weld assembly and carries out derusting by sandblasting；
2) connected components to be welded after derusting carry out alkali cleaning oil removing, and alkali wash water group becomes NaOH, emulsifier op-10, Na3PO4、 Na2CO3、Na2SiO3.9H2O, using deionized water as solvent, wherein each component mass content shared in alkali wash water is NaOH 25 ~ 30g/L, 1 ~ 5g/L of emulsifier op-10, Na3PO4 10~30g/L、Na2CO3 10~30g/L、Na2SiO3.9H2O 1~5g/L；
3) connected components to be welded after washing with water alkali cleaning oil removing carry out acid pickling and rust removing after cleaning, immerse in descaling bath 10 ~ 30 points Clock, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution is by percentage to the quality, contains 10 ~ 25% HCI、2~10%H2SO4, 1 ~ 5 ‰ emulsifier op-10s, connected components to be welded are placed in sink after pickling, wash with water residual；
4) components welding to be welded after acid pickling and rust removing is formed, is heat-treated after container formation by existing heat treatment process, To eliminate stress；Whole pickling is carried out after container heat treatment, particularly: the pickling solution in descaling bath is heated to 80 ~ 100 DEG C, It is passed through vapor into container, is integrally put into container in descaling bath after vessel wall temperature rises to 80 ~ 100 DEG C, pickling solution is logical Cross the feed inlet of container open, discharge port enters in container, and pickling solution is filled in container, moved up and down by suspender by container, It then fills acid to constantly flow out, into container, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution By percentage to the quality, contain 15 ~ 30%HCI, 1 ~ 5 ‰ emulsifier op-10s, 2 ~ 10%H2SO4, the time of whole pickling is 15 ~ 20 points Clock washes with water residual pickling solution in container transfer screw clamp after whole pickling；
5) container carries out inner surface Passivation Treatment after whole pickling, the passivating solution in deactivation slot is introduced in container, passivating solution exists It is stopped 15 ~ 20 minutes in container, passivating solution carries out surface passivation to container inner wall, and it is 3 ~ 7g/L's that passivating solution, which contains mass fraction, Then the emulsifier op-10 of citric acid, 1 ~ 5g/L uses deionized water cleaning container；
6) container after being passivated is passed through nitrogen, with being dried with nitrogen inside container；
7) container outer surface after being dried with nitrogen carries out derusting by sandblasting, examines derusting effect；
8) it paints after outer surface derusting is qualified by prior art.
Preferably: step 1) derusting by sandblasting mode of operation is manual air sandblasting, and abrasive material is 80 mesh quartz sands.
The method of step 7) inspection derusting effect are as follows: choose test point, dip in alcohol wipe, free from dust noresidue liquid with silk Then outer surface is qualified.
Preferably: step 8) derusting by sandblasting mode of operation is manual air sandblasting, and abrasive material is 80 mesh quartz sands.
The beneficial effects of the present invention are: concise in technology, consumption of raw materials is few, at low cost, high treating effect, container cleaning inside Degree is high, does not pollute UF6。
Specific embodiment
A kind of UF6Acid wash passivation process of surface treatment in storage process, device therefor include pickling liquid bath, Sink, passivation liquid bath, suspender, industrial chemicals used have NaOH, emulsifier op-10, Na2CO3Deng.Pickling liquid bath, sink, passivation The size of the volume of liquid bath and added chemical container is adapted.
Embodiment 1
1) it treats weld assembly and carries out derusting by sandblasting, specially manual air sandblasting, abrasive material is 80 mesh quartz sands；
2) connected components to be welded after derusting carry out alkali cleaning oil removing, and alkali wash water group becomes NaOH, emulsifier op-10, Na3PO4、 Na2CO3、Na2SiO3.9H2O, using deionized water as solvent, wherein each component mass content shared in alkali wash water is NaOH 25g/L, emulsifier op-10 1g/L, Na3PO4 10g/L、Na2CO3 10g/L、Na2SiO3.9H2O 1g/L；
3) connected components to be welded after washing with water alkali cleaning oil removing carry out acid pickling and rust removing after cleaning, immerse in descaling bath 10 ~ 30 points Clock, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution is by percentage to the quality, contains 10%HCI, 2% H2SO4, 1 ‰ emulsifier op-10s, connected components to be welded are transferred in sink after pickling, wash with water Liquid Residue；
4) components welding to be welded after acid pickling and rust removing is formed, is heat-treated after container formation by existing heat treatment process, To eliminate stress；Whole pickling is carried out after container heat treatment, particularly: the pickling solution in descaling bath is heated to 80 DEG C, Xiang Rong It is passed through vapor in device, is integrally put into container in descaling bath after vessel wall temperature rises to 80 DEG C, pickling solution is spacious by container Feed inlet, the discharge port opened enter in container, and pickling solution is filled in container, are moved up and down by suspender by container, then fill acid It constantly flows out, into container, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution is with quality hundred Divide than meter, contains 15%HCI, 1 ‰ emulsifier op-10s, 2%H2SO4, the time of whole pickling is 15 ~ 20 minutes, is held after whole pickling Residual pickling solution is washed with water in device transfer screw clamp；
5) container carries out inner surface Passivation Treatment after whole pickling, the passivating solution in deactivation slot is introduced in container, passivating solution exists It is stopped 15 ~ 20 minutes in container, passivating solution carries out surface passivation to container inner wall, and passivating solution contains the lemon that mass fraction is 3g/L The emulsifier op-10 of lemon acid, 1g/L, then uses deionized water cleaning container；
6) container after being passivated is passed through nitrogen, with being dried with nitrogen inside container；
7) container outer surface after being dried with nitrogen carries out derusting by sandblasting, specially manual air sandblasting, and abrasive material is 80 mesh quartz sands； Derusting effect is examined, test point is chosen, dips in alcohol wipe with silk, then outer surface is qualified for free from dust noresidue liquid；
8) it paints after outer surface derusting is qualified by prior art, painting thickness reaches the requirement of national regulation.
Embodiment 2
1) it treats weld assembly and carries out derusting by sandblasting, specially manual air sandblasting, abrasive material is 80 mesh quartz sands；
2) connected components to be welded after derusting carry out alkali cleaning oil removing, and alkali wash water group becomes NaOH, emulsifier op-10, Na3PO4、 Na2CO3、Na2SiO3.9H2O, using deionized water as solvent, wherein each component mass content shared in alkali wash water is NaOH 30g/L, emulsifier op-10 5g/L, Na3PO4 30g/L、Na2CO3 30g/L、Na2SiO3.9H2O 5g/L；
3) connected components to be welded after washing with water alkali cleaning oil removing carry out acid pickling and rust removing after cleaning, immerse in descaling bath 10 ~ 30 points Clock, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution is by percentage to the quality, containing 25%HCI, 10%H2SO4, 5 ‰ emulsifier op-10s, connected components to be welded are transferred in sink after pickling, wash with water Liquid Residue；
4) components welding to be welded after acid pickling and rust removing is formed, is heat-treated after container formation by existing heat treatment process, To eliminate stress；Whole pickling is carried out after container heat treatment, particularly: the pickling solution in descaling bath is heated to 100 DEG C, Xiang Rong It is passed through vapor in device, is integrally put into container in descaling bath after vessel wall temperature rises to 100 DEG C, pickling solution is spacious by container Feed inlet, the discharge port opened enter in container, and pickling solution is filled in container, are moved up and down by suspender by container, then fill acid It constantly flows out, into container, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution is with quality hundred Divide than meter, contains 30%HCI, 5 ‰ emulsifier op-10s, 10%H2SO4, the time of whole pickling is 15 ~ 20 minutes, is held after whole pickling Residual pickling solution is washed with water in device transfer screw clamp；
5) container carries out inner surface Passivation Treatment after whole pickling, the passivating solution in deactivation slot is introduced in container, passivating solution exists It is stopped 15 ~ 20 minutes in container, passivating solution carries out surface passivation to container inner wall, and passivating solution contains the lemon that mass fraction is 7g/L The emulsifier op-10 of lemon acid, 5g/L, then uses deionized water cleaning container；
6) container after being passivated is passed through nitrogen, with being dried with nitrogen inside container；
7) container outer surface after being dried with nitrogen carries out derusting by sandblasting, specially manual air sandblasting, and abrasive material is 80 mesh quartz sands； Derusting effect is examined, test point is chosen, dips in alcohol wipe with silk, then outer surface is qualified for free from dust noresidue liquid；
8) it paints after outer surface derusting is qualified by prior art, painting thickness reaches the requirement of national regulation.

Claims (4)

1. a kind of UF6Acid wash passivation process of surface treatment in storage process, it is characterized in that:
1) it treats weld assembly and carries out derusting by sandblasting；
2) connected components to be welded after derusting carry out alkali cleaning oil removing, and alkali wash water group becomes NaOH, emulsifier op-10, Na3PO4、 Na2CO3、Na2SiO3.9H2O, using deionized water as solvent, wherein each component mass content shared in alkali wash water is NaOH 25 ~ 30g/L, 1 ~ 5g/L of emulsifier op-10, Na3PO4 10~30g/L、Na2CO3 10~30g/L、Na2SiO3.9H2O 1~5g/L；
3) connected components to be welded after washing with water alkali cleaning oil removing carry out acid pickling and rust removing after cleaning, immerse in descaling bath 10 ~ 30 points Clock, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution is by percentage to the quality, contains 10 ~ 25% HCI、2~10%H2SO4, 1 ~ 5 ‰ emulsifier op-10s, the connected components to be welded after pickling are transferred in sink, wash with water residual；
4) components welding to be welded after acid pickling and rust removing is formed, is heat-treated after container formation by existing heat treatment process, To eliminate stress；Whole pickling is carried out after container heat treatment, particularly: the pickling solution in descaling bath is heated to 80 ~ 100 DEG C, It is passed through vapor into container, is integrally put into container in descaling bath after vessel wall temperature rises to 80 ~ 100 DEG C, pickling solution is logical Cross the feed inlet of container open, discharge port enters in container, and pickling solution is filled in container, moved up and down by suspender by container, It then fills acid to constantly flow out, into container, pickling solution group becomes hydrochloric acid, sulfuric acid, emulsifier op-10, wherein every liter of pickling solution By percentage to the quality, contain 15 ~ 30%HCI, 1 ~ 5 ‰ emulsifier op-10s, 2 ~ 10%H2SO4, the time of whole pickling is 15 ~ 20 points Clock washes with water residual pickling solution in container transfer screw clamp after whole pickling；
5) container carries out inner surface Passivation Treatment after whole pickling, the passivating solution in deactivation slot is introduced in container, passivating solution exists It is stopped 15 ~ 20 minutes in container, passivating solution carries out surface passivation to container inner wall, and it is 3 ~ 7g/L's that passivating solution, which contains mass fraction, Then the emulsifier op-10 of citric acid, 1 ~ 5g/L uses deionized water cleaning container；
6) container after being passivated is passed through nitrogen, with being dried with nitrogen inside container；
7) outer surface of the container after being dried with nitrogen carries out derusting by sandblasting, examines derusting effect；
8) it paints after outer surface derusting is qualified by prior art.
2. a kind of UF according to claim 16Acid wash passivation process of surface treatment in storage process, it is special Sign is: step 1) derusting by sandblasting mode of operation is manual air sandblasting, and abrasive material is 80 mesh quartz sands.
3. a kind of UF according to claim 16Acid wash passivation process of surface treatment in storage process, it is special Sign is: the method for step 7) inspection derusting effect are as follows: choose test point, dip in alcohol wipe with silk, free from dust noresidue liquid is then Outer surface is qualified.
4. a kind of UF according to claim 16Acid wash passivation process of surface treatment in storage process, it is special Sign is: step 8) derusting by sandblasting mode of operation is manual air sandblasting, and abrasive material is 80 mesh quartz sands.
CN201710617798.8A 2017-07-26 2017-07-26 UF (ultra filtration factor)6Acid pickling passivation surface treatment process in storage and transportation container processing process Active CN109306493B (en)

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Publication number Priority date Publication date Assignee Title
CN110576347A (en) * 2019-09-16 2019-12-17 上海申江压力容器有限公司 polishing and forming method for stainless steel gas storage tank
CN111716254A (en) * 2019-03-20 2020-09-29 天津市同鑫泰钢管制造有限公司 Crack-resistant rust-removing processing technology for long-distance transportation spiral steel pipe
CN112139861A (en) * 2020-09-27 2020-12-29 海口锦嘉成实业有限公司 Steel surface rust removal method

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Publication number Priority date Publication date Assignee Title
CN111716254A (en) * 2019-03-20 2020-09-29 天津市同鑫泰钢管制造有限公司 Crack-resistant rust-removing processing technology for long-distance transportation spiral steel pipe
CN110576347A (en) * 2019-09-16 2019-12-17 上海申江压力容器有限公司 polishing and forming method for stainless steel gas storage tank
CN112139861A (en) * 2020-09-27 2020-12-29 海口锦嘉成实业有限公司 Steel surface rust removal method

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