SU59097A1 - Method for bright annealing of chromium alloys - Google Patents
Method for bright annealing of chromium alloysInfo
- Publication number
- SU59097A1 SU59097A1 SU29508A SU29508A SU59097A1 SU 59097 A1 SU59097 A1 SU 59097A1 SU 29508 A SU29508 A SU 29508A SU 29508 A SU29508 A SU 29508A SU 59097 A1 SU59097 A1 SU 59097A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- chromium
- bright annealing
- chromium alloys
- annealing
- products
- Prior art date
Links
- 238000000137 annealing Methods 0.000 title description 7
- 229910000599 Cr alloy Inorganic materials 0.000 title description 2
- 239000000788 chromium alloy Substances 0.000 title description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 8
- 229910052804 chromium Inorganic materials 0.000 description 7
- 239000011651 chromium Substances 0.000 description 7
- 229910000604 Ferrochrome Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
Description
Светлый отжиг изделий из сплавов, содержащих хром, представл ет большие трудности, так как достаточно не- i больших количеств кислорода, паров воды и других содержаш.их кислород соединений, присутствующих, в «нейтральной атмосфере печей дл безокислительного отжига, дл того, чтобы часть хрома окислилась с поверх- i ности в Плотноприлегающий и нерас- I творимый в кислотах слой зеленой ; окиси хрома.Bright annealing of products from chromium-containing alloys presents great difficulties, since sufficiently small amounts of oxygen, water vapor, and other oxygenated compounds present in the "neutral atmosphere of furnaces for non-oxidizing annealing, so that some chromium oxidized from the surface to a tight-fitting and acid-insoluble layer of green; chromium oxide.
Согласно предлагаемому насто щим . изобретением способу отжига, издели , : подлежащие отжигу, загружаютс в герметически закрывающиес короба, колокола или т. п. устройства, вперемежку со сло ми мелко измельченного феррохрома или другого богатого металлическим хромом вещества, имеющего достаточно большую поверх- j ность дл энергичного поглощени га- j зов.IAccording to the present. the invention of the annealing method, products: to be annealed, are loaded into hermetically sealed boxes, bells or the like, interspersed with layers of finely ground ferrochrome or other substance rich in chromium metal having a sufficiently large surface for j call. I
Дл герметизации можно примен ть i вод ной затвор. При загрузке изделий | следует примен ть прокладки из асбеста , керамики, металла или тому подобных материалов во избежание прилипани поглотител к издели м. При нагреве происходит полное поглощениеA water seal can be used for sealing. When loading products | Asbestos, ceramic, metal, or similar materials should be used to prevent the scavenger from sticking to the products. When heated, full absorption occurs.
кислорода и, в зависимости от температуры , частичное поглощение азота. По окончании отжига следует остудить печь, короб или колокол до 200- 250° и приступить к выгрузке. При правильном соблюдении режима отжига издели получаютс совершенно светлыми .oxygen and, depending on temperature, partial absorption of nitrogen. At the end of the annealing, the furnace, box or bell should be cooled to 200-250 ° and proceed to unloading. With proper annealing, the products are completely light.
Поглотитель можно оборачивать несколько раз, постепенно добавл порции свежего продукта.The absorber can be wrapped several times, gradually adding portions of fresh product.
Дл уменьшени расхода поглотител можно производить более или менее полное откачивание воздуха из аппаратуры, не забыва о необходимости полной ее герметизации.To reduce the consumption of the absorber, it is possible to produce more or less complete evacuation of air from the apparatus, not forgetting the need to completely seal it.
В качестве богатых хромом веществ, кроме феррохрома, можно примен ть стружку хромистых сталей, нихром, хрома ль и др.As chromium-rich substances, in addition to ferrochrome, chips of chromium steels, nichrome, chromium, etc. can be used.
Предмет изобретени .The subject matter of the invention.
Способ светлого отжига хромистых сплавов в нейтральной атмосфере, о тличающийс тем, что, с целью поглощени кислорода, между издели ми насыпают измельченный феррохром или другие богатые хромом вещества, както: стружки хромистых сталей, нихрома , хромал и др.The method of bright annealing of chromium alloys in a neutral atmosphere, which is characterized by the fact that crushed ferrochrome or other chromium-rich substances are poured between the products to absorb oxygen, such as: chips of chromium steels, nichrome, chromate, etc.
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU12933A Division SU38260A1 (en) | 1926-12-08 | 1926-12-08 | Device for comparative auscultation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU59097A1 true SU59097A1 (en) | 1941-02-28 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2535818C1 (en) * | 2013-07-30 | 2014-12-20 | Закрытое акционерное общество "Сатурн-инструментальный завод" | Method of protection of surface of parts during heating in furnaces |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2535818C1 (en) * | 2013-07-30 | 2014-12-20 | Закрытое акционерное общество "Сатурн-инструментальный завод" | Method of protection of surface of parts during heating in furnaces |
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