PL363056A1 - Method for glow discharge nitriding of inner surface of cannon barrels - Google Patents
Method for glow discharge nitriding of inner surface of cannon barrelsInfo
- Publication number
- PL363056A1 PL363056A1 PL03363056A PL36305603A PL363056A1 PL 363056 A1 PL363056 A1 PL 363056A1 PL 03363056 A PL03363056 A PL 03363056A PL 36305603 A PL36305603 A PL 36305603A PL 363056 A1 PL363056 A1 PL 363056A1
- Authority
- PL
- Poland
- Prior art keywords
- barrels
- additional electrodes
- insulators
- barrel
- holes
- Prior art date
Links
- 238000005121 nitriding Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000012212 insulator Substances 0.000 abstract 2
- 230000005611 electricity Effects 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000000615 nonconductor Substances 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
Landscapes
- Saccharide Compounds (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Discharge Heating (AREA)
Abstract
Sposób azotowania jarzeniowego wewnętrznych powierzchni luf broni artyleryjskiej, prowadzonego w warunkach obniżonego ciśnienia, w atmosferze złożonej z mieszaniny azotu z wodorem, w temperaturze 450-600ºC i w czasie od 6 do 15 godzin, gdzie uziemione lufy ustawia się na elektrycznych izolatorach i zasila się jako katody prądem elektrycznym o napięciu 600-1200V, a w otwory luf wprowadza się dodatkowe elektrody, połączone z obudową pieca jako anody, polega na tym, że lufy zawiesza się na wsporniku, ustawionym na izolatorach pionowo, korzystnie otworami wylotowymi do dołu, i zasila się je prądem pulsującym o prostokątnym kształcie impulsów i częstotliwości pulsacji do 120KHz, przy czym dodatkowe elektrody w wewnętrznych otworach luf podłącza się jako anody, zarówno na ich wlocie jak i na wylocie, ustala się je centrycznie względem luf za pomocą przeciwnapyleniowych izolatorów, przy czym dolne końce dodatkowych elektrod ustala się przesuwnie, natomiast przepływ świeżej atmosfery azotującej przez wszystkie otwory lufowe wspomaga się wentylatorem korzystnie w kierunku od wylotów luf do ich wlotów. Korzystne jest przy tym, jeśli dodatkowe elektrody obciąża się własnym ciężarem korzystnie wspomaganym dodatkowym obciążnikiem.A method of glow nitriding of the internal surfaces of artillery barrels, carried out under reduced pressure, in an atmosphere consisting of a mixture of nitrogen and hydrogen, at a temperature of 450-600ºC and for a period of 6 to 15 hours, where the grounded barrels are placed on electrical insulators and powered as cathodes electric current with a voltage of 600-1200V, and additional electrodes are inserted into the barrel holes, connected to the furnace casing as anodes, the barrels are suspended on a bracket placed vertically on insulators, preferably with the outlet holes down, and they are powered with electricity pulsating with a rectangular pulse shape and pulsation frequency up to 120KHz, additional electrodes in the internal holes of the barrels are connected as anodes, both at their inlet and outlet, they are located centrically in relation to the barrels using anti-spray insulators, and the lower ends of the additional electrodes is set in a sliding manner, while the flow of fresh nitriding atmosphere through all barrel openings is supported by a fan, preferably in the direction from the barrel outlets to their inlets. It is advantageous if the additional electrodes are loaded with their own weight, preferably supported by an additional weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL363056A PL206933B1 (en) | 2003-10-23 | 2003-10-23 | Method for glow discharge nitriding of inner surface of cannon barrels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL363056A PL206933B1 (en) | 2003-10-23 | 2003-10-23 | Method for glow discharge nitriding of inner surface of cannon barrels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL363056A1 true PL363056A1 (en) | 2005-05-02 |
| PL206933B1 PL206933B1 (en) | 2010-10-29 |
Family
ID=35396024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL363056A PL206933B1 (en) | 2003-10-23 | 2003-10-23 | Method for glow discharge nitriding of inner surface of cannon barrels |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL206933B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL238940B1 (en) * | 2017-10-19 | 2021-10-18 | Instytut Mech Precyzyjnej | Anode for glow discharge nitriding of inner surfaces of sleeves, especially barrels |
-
2003
- 2003-10-23 PL PL363056A patent/PL206933B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL206933B1 (en) | 2010-10-29 |
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