PL67271B1 - - Google Patents
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- PL67271B1 PL67271B1 PL143632A PL14363270A PL67271B1 PL 67271 B1 PL67271 B1 PL 67271B1 PL 143632 A PL143632 A PL 143632A PL 14363270 A PL14363270 A PL 14363270A PL 67271 B1 PL67271 B1 PL 67271B1
- Authority
- PL
- Poland
- Prior art keywords
- amount
- bath
- perhydrol
- diffusion
- air
- Prior art date
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- 238000000034 method Methods 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 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 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000005269 aluminizing Methods 0.000 claims description 3
- KKKYJLNWARAYSD-UHFFFAOYSA-N hexacalcium;tetraborate Chemical compound [Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-] KKKYJLNWARAYSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims 1
- 238000004532 chromating Methods 0.000 claims 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000005255 carburizing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001516 alkali metal iodide Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Description
Opublikowano: 31.111.1973 67271 KI. 48b,ll/04 MKP C23c 11/04 UKD Twórca wynalazku: Tadeusz Pelczynski Wlasciciel patentu: Instytut Mechaniki Precyzyjnej, Warszawa (Polska) Sposób uaktywniania kapieli solnych Przedmiotem wynalazku jest sposób uaktywniania kapieli solnych przeznaczonych do chromowania dyfu¬ zyjnego, aluminiowania lub weglochromowania.Kapiele te zawieraja czteroborany sodu, potasu, wap¬ nia lub ich mieszaniny, chrom metaliczny, aluminium lub wegliki chromu w zaleznosci od rodzaju obróbki cieplno-chemicznej jak: chromowanie dyfuzyjne, alu¬ miniowanie, weglochromowanie. Czas uaktywniania ka¬ pieli solnych jest stosunkowo dlugi i wynosi 2—20 go¬ dzin w zaleznosci od temperatury przeprowadzanego procesu, co jest bardzo duzym utrudnieniem w produk¬ cji. Czas ten mozna regulowac temperatura, co jest ograniczone samym urzadzeniem, oraz jego; odporno¬ scia na dzialanie wysokich temperatur, jak równiez do¬ datkiem jodków metali alkalicznych, które sa niestabil¬ ne w temperaturze prowadzonego procesu, wskutek cze¬ go dzialanie ich slabnie, co z kolei rzutuje niekorzyst¬ nie na równomiernosc grubosci otrzymywanej warstwy dyfuzyjnej.Celem wynalazku jest skrócenie czasu uaktywniania kapieli oraz wyeliminowanie wyzej wymienionych nie¬ dogodnosci.Wedlug wynalazku osiaga sie to stosujac przedmu¬ chiwanie kapieli solnej powietrzem lub tlenem, badz wkraplanie do kapieli 30% perhydrolu. Czas konieczny do uaktywnienia kapieli skraca sie do 40% obecnie potrzebnego czasu. Stwierdzono równiez, ze ilosc do¬ dawanego powietrza lub tlenu jest zalezna od rodzaju 10 15 20 25 stosowanego pieca, a krotnosc wymiany musi byc do¬ stosowana do warunków, w jakich prowadzi sie proces i wynosic 3—8 razy.Sposób uaktywniania kapieli solnych przeznaczonych do chromowania dyfuzyjnego, aluminiowania lub we¬ glochromowania wedlug wynalazku polega na tym, ze roztopiona kapiel zawierajaca czteroboran sodu, pota¬ su, wapnia lub ich mieszanine przedmuchuje sie po¬ wietrzem lub tlenem dostarczanym w ilosci 50—1200 1/godz., lub tez wkrapla sie 30% perhydrol w ilosci 10—150 kropel na minute przy takim otworze kapilary, aby kropla perhydrolu ulegla calkowitemu odparowaniu dopiero przy zetknieciu sie z powierzchnia zwierciadla kapieli. PL PLPublished: 31.111.1973 67271 KI. 48b, ll / 04 MKP C23c 11/04 UKD Inventor: Tadeusz Pelczynski Patent owner: Institute of Precision Mechanics, Warsaw (Poland) A method of activating salt baths The subject of the invention is a method of activating salt baths intended for diffusion chrome plating, aluminizing or carburizing. these contain sodium, potassium, calcium tetraborates or their mixtures, metallic chromium, aluminum or chromium carbons, depending on the type of thermochemical treatment, such as: diffusion chromium plating, alluminating, carburizing. The activation time of the salt baths is relatively long and amounts to 2-20 hours, depending on the temperature of the process carried out, which is a great difficulty in production. This time, you can adjust the temperature, which is limited by the device itself and its; resistance to high temperatures, as well as the addition of alkali metal iodides, which are unstable at the temperature of the process, due to which their effect weakens, which in turn adversely affects the uniformity of the thickness of the obtained diffusion layer. According to the invention this is achieved by blowing the salt bath with air or oxygen, or by dropping 30% of perhydrol into the bath. The time needed to activate the bath is reduced to 40% of the time currently needed. It has also been found that the amount of air or oxygen added depends on the type of furnace used, and the replacement rate must be adjusted to the conditions under which the process is carried out, and amount to 3 to 8 times. for diffusion chrome plating, aluminizing or carbon plating according to the invention, it consists in the fact that a molten bath containing sodium, potassium, calcium tetraborate or a mixture thereof is blown with air or oxygen supplied in the amount of 50-1200 l / h, or else 30% perhydrol is instilled in the amount of 10-150 drops per minute at such a capillary opening that the drop of perhydrol is completely vaporized only upon contact with the bath mirror surface. PL PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL67271B1 true PL67271B1 (en) | 1972-10-31 |
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