EA201400618A1 - METHOD FOR OBTAINING COATINGS ON PRODUCTS FROM LOW AND HIGHLY ALLOY STEELS, NON-FERROUS METALS OR THEIR ALLOYS BY THERMODIFFUSION ZINC - Google Patents
METHOD FOR OBTAINING COATINGS ON PRODUCTS FROM LOW AND HIGHLY ALLOY STEELS, NON-FERROUS METALS OR THEIR ALLOYS BY THERMODIFFUSION ZINCInfo
- Publication number
- EA201400618A1 EA201400618A1 EA201400618A EA201400618A EA201400618A1 EA 201400618 A1 EA201400618 A1 EA 201400618A1 EA 201400618 A EA201400618 A EA 201400618A EA 201400618 A EA201400618 A EA 201400618A EA 201400618 A1 EA201400618 A1 EA 201400618A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- phase
- container
- metal powder
- products
- rpm
- Prior art date
Links
Abstract
Изобретение относится к области получения защитных металлических покрытий на изделиях из стали, цветных металлов и их сплавов, нанесенных термодиффузионным методом. Способ включает в себя процесс нанесения покрытия путем термодиффузионного насыщения металлической порошковой смесью мелкой фракции структуры обрабатываемого изделия, при котором изделия погружаются в технологический контейнер одновременно с насыщающей порошковой смесью металлического порошка (на основе цинка или хрома с примесью оксида цинка и возможными добавками других наполнителей, например диоксида титана, оксида алюминия). Процесс термодиффузионного насыщения включает в себя четыре последовательные фазы в следующем порядке: фаза создания пылевого облака из металлического порошка, заполняющего весь объем технологического контейнера, при котором частицы металлического порошка равномерно осаждаются на всей поверхности изделия за счет трибостатического эффекта, и максимальная длительность этой фазы составляет не более 15 мин при скорости вращения контейнера не менее 7 об/мин (время фазы может быть существенно сокращено, если увеличить скорость вращения контейнера в два раза). Затем начинается фаза нагрева до заданной температуры в диапазоне от 250 до 500°С при скорости нагрева не менее 5°C/мин, при скорости вращения контейнера не менее 5 об/мин и длительности этой фазы не менее 50 мин. Затем фаза выдержки на заданной температуре при скорости вращения контейнера не менее 2-3 об/мин не менее 5 мин. Такое небольшое вращение обеспечивает гомогенное распределение температурного ингредиента по всей площади обрабатываемой детали. И затем фаза принудительногоThe invention relates to the field of production of protective metal coatings on products from steel, non-ferrous metals and their alloys, applied by thermal diffusion method. The method includes the process of coating by thermal diffusion saturation of the metal powder mixture of the fine fraction of the structure of the product being processed, in which the products are immersed in the process container simultaneously with the saturating powder mixture of metal powder (based on zinc or chromium mixed with zinc oxide and possible additions of other fillers, for example titanium dioxide, alumina). The process of thermal diffusion saturation includes four successive phases in the following order: the phase of creating a dust cloud from metal powder filling the entire volume of the process container, in which the particles of metal powder are uniformly deposited on the entire surface of the product due to the tribostatic effect, and the maximum duration of this phase is not more than 15 minutes at a container rotation speed of at least 7 rpm (the phase time can be significantly reduced by increasing the speed of rotation of the container tainer twice). Then, the heating phase begins to a predetermined temperature in the range from 250 to 500 ° C at a heating rate of at least 5 ° C / min, at a container rotation speed of at least 5 rpm and a duration of this phase of at least 50 minutes. Then, the exposure phase at a given temperature at a container rotation speed of at least 2-3 rpm for at least 5 minutes. Such a small rotation ensures a homogeneous distribution of the temperature ingredient over the entire area of the workpiece. And then the forced phase
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2014120633/02A RU2570856C1 (en) | 2014-05-22 | 2014-05-22 | Methods of coating production on items out of low and high alloyed steels, non-ferrous metals or their alloys by method of thermodiffusion galvanising |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA201400618A1 true EA201400618A1 (en) | 2015-11-30 |
| EA026378B1 EA026378B1 (en) | 2017-04-28 |
Family
ID=54704910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA201400618A EA026378B1 (en) | 2014-05-22 | 2014-05-30 | Method for producing coatings on items made of low- and high-alloyed steels, non-ferrous metals or their alloys by method of thermodiffusion galvanizing |
Country Status (2)
| Country | Link |
|---|---|
| EA (1) | EA026378B1 (en) |
| RU (1) | RU2570856C1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2644092C1 (en) * | 2017-04-12 | 2018-02-07 | Общество с ограниченной ответственностью "Волнар" | Method of thermal diffusion zinc coating of articles made of high-strength aluminum alloys |
| RU2651087C1 (en) * | 2017-08-28 | 2018-04-18 | Общество с ограниченной ответственностью "Аквамодуль" | Powder mixture for thermodiffusion zinc coating of titanium alloys, the method of thermodiffusion zinc coating of the articles from titanium alloys |
| EP3561144A1 (en) * | 2018-04-27 | 2019-10-30 | Remix spolka akcyjna | Method of depositing a zinc layer on the surface of steel elements and a unit for deposition of a zink layer on the surface of steel elements |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3414428A (en) * | 1964-10-20 | 1968-12-03 | Allied Chem | Chromizing compositions and methods and continuous production of chromium halides for chromizing |
| RU2221898C2 (en) * | 2001-11-19 | 2004-01-20 | Институт высокотемпературной электрохимии Уральского отделения РАН | Process of thermal-diffusion treatment of articles made of metals and alloys |
| DE102008020576B4 (en) * | 2008-04-24 | 2018-06-28 | Bodycote Wärmebehandlung GmbH | Method for diffusion galvanizing |
| RU2507300C2 (en) * | 2012-05-02 | 2014-02-20 | ОАО "Первоуральский новотрубный завод" | Application method of thermal diffusion zinc coating, and coupling with thermal diffusion zinc coating |
-
2014
- 2014-05-22 RU RU2014120633/02A patent/RU2570856C1/en active
- 2014-05-30 EA EA201400618A patent/EA026378B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EA026378B1 (en) | 2017-04-28 |
| RU2014120633A (en) | 2015-11-27 |
| RU2570856C1 (en) | 2015-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC4A | Registration of transfer of a eurasian patent by assignment | ||
| PC4A | Registration of transfer of a eurasian patent by assignment |