DE1521679B2 - Verfahren zum reinigen und passivieren der metalloberflaechen in waermeaustauschern von atomkernreaktoren - Google Patents
Verfahren zum reinigen und passivieren der metalloberflaechen in waermeaustauschern von atomkernreaktorenInfo
- Publication number
- DE1521679B2 DE1521679B2 DE19631521679 DE1521679A DE1521679B2 DE 1521679 B2 DE1521679 B2 DE 1521679B2 DE 19631521679 DE19631521679 DE 19631521679 DE 1521679 A DE1521679 A DE 1521679A DE 1521679 B2 DE1521679 B2 DE 1521679B2
- Authority
- DE
- Germany
- Prior art keywords
- acid
- passivating
- passivation
- metal surfaces
- nitrite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000004140 cleaning Methods 0.000 title claims description 9
- 238000002161 passivation Methods 0.000 claims description 35
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 12
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 235000010288 sodium nitrite Nutrition 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- ZFAKTZXUUNBLEB-UHFFFAOYSA-N dicyclohexylazanium;nitrite Chemical compound [O-]N=O.C1CCCCC1[NH2+]C1CCCCC1 ZFAKTZXUUNBLEB-UHFFFAOYSA-N 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000002738 chelating agent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 150000001860 citric acid derivatives Chemical class 0.000 claims description 3
- 230000000536 complexating effect Effects 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 125000001477 organic nitrogen group Chemical group 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 150000003892 tartrate salts Chemical class 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910021645 metal ion Inorganic materials 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 22
- 238000011282 treatment Methods 0.000 description 21
- 230000005855 radiation Effects 0.000 description 11
- 239000012535 impurity Substances 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000021317 phosphate Nutrition 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 150000002826 nitrites Chemical class 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 3
- 150000004760 silicates Chemical class 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- -1 fluorine ions Chemical class 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 240000001913 Atriplex hortensis Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- CAMXVZOXBADHNJ-UHFFFAOYSA-N ammonium nitrite Chemical compound [NH4+].[O-]N=O CAMXVZOXBADHNJ-UHFFFAOYSA-N 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- BEOODBYKENEKIC-UHFFFAOYSA-N azanium;bromate Chemical compound [NH4+].[O-]Br(=O)=O BEOODBYKENEKIC-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
- 239000002966 varnish Substances 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
- 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
-
- 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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
Landscapes
- 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)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH44962A CH393030A (de) | 1962-01-15 | 1962-01-15 | Verfahren zur Behandlung von Metalloberflächen und Anwendung des Verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1521679A1 DE1521679A1 (de) | 1969-10-02 |
| DE1521679B2 true DE1521679B2 (de) | 1972-03-30 |
Family
ID=4187279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19631521679 Pending DE1521679B2 (de) | 1962-01-15 | 1963-01-04 | Verfahren zum reinigen und passivieren der metalloberflaechen in waermeaustauschern von atomkernreaktoren |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT250124B (en:Method) |
| BE (1) | BE627089A (en:Method) |
| CH (1) | CH393030A (en:Method) |
| DE (1) | DE1521679B2 (en:Method) |
| FI (1) | FI42490C (en:Method) |
| FR (1) | FR1376727A (en:Method) |
| GB (1) | GB960346A (en:Method) |
| NL (1) | NL287796A (en:Method) |
| SE (1) | SE304894B (en:Method) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587043A (en) * | 1983-06-07 | 1986-05-06 | Westinghouse Electric Corp. | Decontamination of metal surfaces in nuclear power reactors |
| US5587025A (en) * | 1995-03-22 | 1996-12-24 | Framatome Technologies, Inc. | Nuclear steam generator chemical cleaning passivation solution |
| CN100485089C (zh) * | 2007-01-25 | 2009-05-06 | 河南济源钢铁(集团)有限公司 | 炼钢厂烟气净化系统风机转子处理方法 |
| GB201608810D0 (en) | 2016-05-19 | 2016-07-06 | British American Tobacco Co | Cutting and arranging rods for tobacco industry products |
| DE102017206940A1 (de) | 2017-04-25 | 2018-10-25 | Mahle International Gmbh | Verfahren zur Herstellung eines Wärmetauschers |
| CN108588699A (zh) * | 2018-05-22 | 2018-09-28 | 马鞍山市三川机械制造有限公司 | 一种飞轮生产表面处理工艺 |
| WO2020226645A1 (en) * | 2019-05-09 | 2020-11-12 | Hewlett-Packard Development Company, L.P. | Water-based anti-corrosion cutting fluid for electronic device housings |
| CN117089828B (zh) * | 2023-09-13 | 2024-03-22 | 山东天开钨业有限公司 | 一种球齿硬质合金表面钝化加工方法 |
-
0
- BE BE627089D patent/BE627089A/xx unknown
- NL NL287796D patent/NL287796A/xx unknown
-
1962
- 1962-01-15 CH CH44962A patent/CH393030A/de unknown
-
1963
- 1963-01-02 AT AT2663A patent/AT250124B/de active
- 1963-01-03 GB GB41163A patent/GB960346A/en not_active Expired
- 1963-01-04 DE DE19631521679 patent/DE1521679B2/de active Pending
- 1963-01-07 FR FR920672A patent/FR1376727A/fr not_active Expired
- 1963-01-11 SE SE31663A patent/SE304894B/xx unknown
- 1963-01-11 FI FI5263A patent/FI42490C/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| FI42490B (en:Method) | 1970-04-30 |
| DE1521679A1 (de) | 1969-10-02 |
| SE304894B (en:Method) | 1968-10-07 |
| BE627089A (en:Method) | |
| GB960346A (en) | 1964-06-10 |
| AT250124B (de) | 1966-10-25 |
| FR1376727A (fr) | 1964-10-31 |
| NL287796A (en:Method) | |
| FI42490C (fi) | 1970-08-10 |
| CH393030A (de) | 1965-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2417606B1 (de) | Verfahren zur oberflächen-dekontamination | |
| DE2613351C3 (de) | Verfahren zur chemischen Dekontamination von metallischen Bauteilen von Kernreaktoranlagen | |
| EP1955335B1 (de) | Verfahren zur dekontamination einer eine oxidschicht aufweisenden oberfläche einer komponente oder eines systems einer kerntechnischen anlage | |
| EP0296147A1 (de) | Verfahren zur Gewinnung bzw. Rückgewinnung von Säuren aus metallhaltigen Lösungen dieser Säuren | |
| DE2847780C2 (de) | Verfahren zur chemischen Dekontamination von metallischen Bauteilen von Kernreaktoranlagen | |
| DE849789C (de) | Verfahren zum Reinigen metallischer Gegenstaende | |
| DE2711056A1 (de) | Verfahren zum passivieren von metallflaechen | |
| DE3143440A1 (de) | Verfahren zur dekontamination von radioaktiv kontaminierten oberflaechen metallischer werkstoffe | |
| DE1521679B2 (de) | Verfahren zum reinigen und passivieren der metalloberflaechen in waermeaustauschern von atomkernreaktoren | |
| EP1082728B1 (de) | Verfahren zum abbau der radioaktivität eines metallteiles | |
| EP0273182B1 (de) | Verfahren zum Reinigen eines Behälters | |
| DE2748135C2 (de) | Flexibler Graphitschichtstoff | |
| DE2520988C2 (de) | Verfahren zur Entfernung von Kesselstein- und/oder Schlammablagerungen | |
| DE1000356B (de) | Verfahren zur Abtrennung und Wiedergewinnung von Kohlensaeure aus Gasgemischen | |
| US5724668A (en) | Method for decontamination of nuclear plant components | |
| DE69510990T2 (de) | Verfahren und Vorrichtung zur Behandlung von metallichem Material | |
| DE1521679C (de) | Verfahren zum Reinigen ud Passiviere de Metalloberflächen in Wärmeaustauschern von Atomkernreaktoren | |
| DE1136882B (de) | Verfahren und Mittel zum Aufbringen von Oxalatueberzuegen auf Eisen und Stahl | |
| EP1141445A1 (de) | Verfahren zur dekontamination einer oberfläche eines bauteiles | |
| DE1517638C3 (de) | Verfahren zum EntStrahlen einer mit niederwertigeren Uranverbindungen verseuchten, Uranhexafluorid enthaltenden Anlage | |
| DE2504840A1 (de) | Verfahren zur beseitigung fester bzw. staubfoermiger ablagerungen in anlagen fuer die handhabung von uranhexafluorid | |
| DE3111331A1 (de) | "verfahren zur verhinderung von korrosion und wasserstoff-versproedung von aus tantal hergestellten einrichtungen, in denen heisse konzentrierte schwefelsaeure gehandhabt wird" | |
| DE1274420B (de) | Korrosionsinhibitor fuer Staehle | |
| DE102004024722A1 (de) | Binden von radioaktivem Jod in einem Kernreaktor | |
| WO1991008983A1 (de) | Verfahren zur herstellung wässriger ammoniumnitritlösungen und verwendung dieser lösungen als flüchtiger korrosionsinhibitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 |