PL64944B1 - - Google Patents

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Publication number
PL64944B1
PL64944B1 PL127051A PL12705168A PL64944B1 PL 64944 B1 PL64944 B1 PL 64944B1 PL 127051 A PL127051 A PL 127051A PL 12705168 A PL12705168 A PL 12705168A PL 64944 B1 PL64944 B1 PL 64944B1
Authority
PL
Poland
Prior art keywords
retort
mixture
chambers
powder
activator
Prior art date
Application number
PL127051A
Other languages
English (en)
Inventor
Karapulka Kazimierz
Rybczynski Ludwik
Original Assignee
Politechnika Poznanska
Filing date
Publication date
Application filed by Politechnika Poznanska filed Critical Politechnika Poznanska
Publication of PL64944B1 publication Critical patent/PL64944B1/pl

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Description

Chromowanie odbywa sie we wszystkich czesciach retorty. W wydzielonej komorze srodkowej czesci retorty, do której przenika gazowy czynnik chro^ mujacy przez perforacje przegród, nadmiar tego czynnika magazynuje sie w .porach granulek masy ceramicznej.Chromowanie bardzo dokladne dokonuje sie w typowej retorcie bez uzycia mieszanin proszko¬ wych. Przedmioty do chromowania umieszcza sie wraz z granulkami masy ceramicznej przygotowa¬ nymi w poprzednim procesie w stosunku objeto¬ sciowym jak 1 do 3. PL

Claims (3)

  1. Zastrzezenia patentowe 1. Sposób dyfuzyjnego chromowania metah mie¬ szanina proszku chromujacego z dodatkiem akty- 33 watora, w obecnosci granulowanej masy ceramicz¬ nej umieszczonej w retorcie poddawanej wygrza¬ niu, znamienny tym, ze proces prowadzi sie w tem¬ peraturze 800°C do 900°C w retorcie uszczelnionej, najkorzystniej szkliwem o temperaturze stapiania 35 okolo 760°C, przy czym retorta podzielona jest co najmniej na trzy komory, oddzielone od siebie perforowanymi przegrodami, a poszczególne komory wypelnia sie na przemian mieszanina proszku chro¬ mujacego, aktywatorem — jodkiem amonu i wsa- 40 dem przeznaczonym do chromowania, badz granu¬ lowana masa ceramiczna i wsadem.
  2. 2. Sposób wedlug zastrz. 1, znamienny tym, ze w komorach retorty lub w retorcie umieszcza sie przedmioty z mieszanina proszkowa lub granulka- 45 mi masy teramicznej w stosunku objetosciowym, najkorzystniej 1 :
  3. 3. Typo Lódz, zam, 86/72 — 225 egz. Cena zl 19,— PL
PL127051A 1968-05-20 PL64944B1 (pl)

Publications (1)

Publication Number Publication Date
PL64944B1 true PL64944B1 (pl) 1972-02-29

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