SU413200A1 - - Google Patents

Info

Publication number
SU413200A1
SU413200A1 SU1676640A SU1676640A SU413200A1 SU 413200 A1 SU413200 A1 SU 413200A1 SU 1676640 A SU1676640 A SU 1676640A SU 1676640 A SU1676640 A SU 1676640A SU 413200 A1 SU413200 A1 SU 413200A1
Authority
SU
USSR - Soviet Union
Prior art keywords
metal products
composition
pipes
products
water
Prior art date
Application number
SU1676640A
Other languages
Russian (ru)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1676640A priority Critical patent/SU413200A1/ru
Application granted granted Critical
Publication of SU413200A1 publication Critical patent/SU413200A1/ru

Links

Landscapes

  • Heat Treatment Of Articles (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

СОСТАВ ДЛЯ УМЕНЬШЕНИЯ ОКАЛИНООБРАЗОВАНИЯ ПРИ ТЕРМООБРАБОТКЕ МЕТАЛЛИЧЕСКИХ ИЗДЕЛИЙCOMPOSITION FOR REDUCING THE OCALIN FORMATION AT THE HEAT TREATMENT OF METAL PRODUCTS

Изобретение относитс  к химической подготовке поверхности металлических изделий, налри.мер труб из инвара, неред нагревом. Известен состав дл  уменьшени  окалинообразовани  при термообработке металлическнх изделий, например из тита.на и его сплавов , который нанос т на новерхность издели  неред нагревом. Состав включает следуюнхие комноненты, вес. %: Едка  щелочь30-70 Тринатрийфосфат30-60 ВодаОстальное Целью изобретени   вл етс  повышение качества защиты новерхности металлических изделий , нанример труб из инвара, нри термообработке от окислени . Дл  этого в состав раствора ввод т гидрат окиси алюмини  нри следуюп1ем соотношении компонентов, вес. %: Едка  щелочь10-20 Гидрат окисн алюмини  10-15 ВодаОстальное Температура раствора 85-95°С, врем  обработки изделий в растворе перед нагревом 10-15 мин. Солевое покрытие cvHiaT на воздухе , затем издели  греют в печи при 850°С в течение 15 мин и охлаждают в воде. Обработанные таким образом издели  имеют тонкую равномерную окалину темно-Коричневого цвета. Предлагаемый состав уменьшает окалинообразование нри нагреве металлических изделий , например труб из инвара; измен ет состав окалнны, в результате чего значительно облегчаетс  и ускор етс  ее последующее кис.ютное травление. И р е д М е т изобретени  Состав дл  умеиьн епи  окалипообразовани  нри термообработке металлических изделий на основе водного раствора, включаюн ий едкий натр, отличающийс  тем, что, с нелью повышени  качества защиты поверхности металлических изделий, например труб из HLiBapa, в состав раствора введен гидрат окиси алюмини  нрн следующем соотнощенин компонентов, вес. %: Едка  щелочь10-20 Гндрат окнси алк мини  10-15 ВодаОстальноеThe invention relates to the chemical preparation of the surface of metal products, such as pipes from Invar, which are not heated. A known composition for reducing the scaling during the heat treatment of metal products, for example, from titanium and its alloys, which is applied to the surface of the product by non-heating. The composition includes the following components, weight. %: Eating alkaline 30-70 Trisodium Phosphate 30-60 Water Else The object of the invention is to improve the quality of protection of the surface of metal products, such as Invar pipes, during heat treatment against oxidation. For this purpose, alumina hydrate is introduced into the solution by the following ratio of components, wt. %: Caustic alkali 10-20 Alumina hydrate 10-15 Water Remaining Solution temperature is 85-95 ° С, the time of product processing in the solution before heating is 10-15 minutes. Salt coating cvHiaT in air, then the products are heated in an oven at 850 ° C for 15 minutes and cooled in water. The products treated in this way have a thin uniform dark-brown scale. The proposed composition reduces the scaling when heating metal products, such as pipes from Invar; The composition changes per cent, as a result of which its subsequent acid etching is greatly facilitated and accelerated. EFFECT OF THE INVENTION The composition for cleaning and scaling of metal products based on an aqueous solution, including caustic soda, characterized in that, in order to improve the quality of protection of the surface of metal products, for example HLiBapa pipes, the solution is introduced alumina hydrate nrn the following ratio of components, weight. %: Eating alkaline 10-20 Gndrat oksi alc mini 10-15 Water Else

SU1676640A 1971-06-29 1971-06-29 SU413200A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1676640A SU413200A1 (en) 1971-06-29 1971-06-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1676640A SU413200A1 (en) 1971-06-29 1971-06-29

Publications (1)

Publication Number Publication Date
SU413200A1 true SU413200A1 (en) 1974-01-30

Family

ID=20481385

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1676640A SU413200A1 (en) 1971-06-29 1971-06-29

Country Status (1)

Country Link
SU (1) SU413200A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114124A1 (en) * 1991-04-30 1992-11-05 Hauni Werke Koerber & Co Kg Heat treating work piece of (non) alloyed steel - by applying gas tight layer to surface and heating
RU2552791C2 (en) * 2010-10-25 2015-06-10 Баошан Айрон Энд Стил Ко., Лтд. Annealing separator for production of textured electrical steel with mirror surface and high magnetic properties

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114124A1 (en) * 1991-04-30 1992-11-05 Hauni Werke Koerber & Co Kg Heat treating work piece of (non) alloyed steel - by applying gas tight layer to surface and heating
RU2552791C2 (en) * 2010-10-25 2015-06-10 Баошан Айрон Энд Стил Ко., Лтд. Annealing separator for production of textured electrical steel with mirror surface and high magnetic properties

Similar Documents

Publication Publication Date Title
US1899734A (en) Removal of oxids from ferrous metal
SU413200A1 (en)
US2882134A (en) Process for aluminum etching
US2127388A (en) Metal article for coating
US2331196A (en) Protective phosphate coating
DE3561545D1 (en) Process for producing porous products of boron or boron compounds
US3062878A (en) Sugar sequestering agent
US2284743A (en) Pickling agent for copper-beryllium alloys
US1572848A (en) Removal of oxids from ferrous metal
US3046232A (en) Method of producing a chelating caustic composition
US2655481A (en) Oxide removing bath
US1939241A (en) Pickling stainless steel
US2481977A (en) Metal protective coating method
US2230319A (en) Process of producing iron sheets for laminated electric transformer cores
US2882135A (en) Chemical composition and process for aluminum etching
US2394620A (en) Preparing metal for drawing operations
US2931713A (en) Method of and material for etching aluminum
US1840562A (en) Method of heat-treating aluminum and articles thereby
GB442859A (en) Process for cleaning or descaling metal
US1460510A (en) Preserving compound for pistachio nuts
US1935834A (en) Cleansing agents
US2181004A (en) Foundry core binder
US1396051A (en) Process of coating steel sheets with tin
US2174454A (en) Process for removing enamel
SU823413A1 (en) Solution for scale removal from surface of metallic articles