CS243756B1 - Honey for refrigeration pipes and its production - Google Patents
Honey for refrigeration pipes and its production Download PDFInfo
- Publication number
- CS243756B1 CS243756B1 CS335682A CS335682A CS243756B1 CS 243756 B1 CS243756 B1 CS 243756B1 CS 335682 A CS335682 A CS 335682A CS 335682 A CS335682 A CS 335682A CS 243756 B1 CS243756 B1 CS 243756B1
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- phosphorus
- weight
- copper
- medium
- alloying
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- Metal Extraction Processes (AREA)
- Lubricants (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Učelom riešenia ]e zabránenie vzniku interkryštalických porúch pri ohřeve redukčnej atmosféře a zabezpečenie antioxidačnej odolnosti médi pri žíhaní v oxidač ně] atmosféře. Uvedeného účelu sa dosiahne tým, že meď sa leguje fosforom na množ stvo 0,015 až 0,040 % hmotnosti. Legovanie taveniny médi sa vykonává až po jej dezoxidácii dřeveným uhlím.The purpose of the solution is to prevent the formation of intercrystalline defects during heating in a reducing atmosphere and to ensure the antioxidant resistance of copper during annealing in an oxidizing atmosphere. The stated purpose is achieved by alloying copper with phosphorus in an amount of 0.015 to 0.040% by weight. Alloying of the copper melt is carried out only after its deoxidation with charcoal.
Description
Vynález sa týká médi pre chladiarenské rúrky a sposobu jej výroby. Súčasne vyrábaná meď obsahujúci kyslík nie je použitelná v procese technologického spracovania, tj. oxidačno-redukčného žíhania, ktoré chladiarenský priemysel používá. Nevhodnost tejto médi pre oxidačno-redukčné žíhanie (ohřev) spočívá v tom, že pri žíhaní (ohřeve) v redukčnej atmosféře obsahujúcej vodík, dochádza k difúzii atomárneho vodíka do médi, vzniká vodná para, ktorá v médi nie je rozpustná ani schopná difúzie, a spĎsobuje interkryštalické porušenie a jej netesnosť, ktorá pre výrobu chladiarenského priemyslu je vyžadovaná. Ako dezoxidačný prvok sa využíval fosfor.The invention relates to a refrigerant tube medium and to a process for its manufacture. At the same time, the oxygen-containing copper produced is not applicable in the process of technological processing, i.e. oxidation-reduction annealing, which is used by the refrigeration industry. The unsuitability of this medium for redox annealing (heating) consists in the diffusion of atomic hydrogen into the medium in the annealing (hydrogen) reducing atmosphere, resulting in water vapor which is neither soluble nor diffusible in the medium; it causes intercrystalline failure and its leakage, which is required for the refrigeration industry. Phosphorus was used as the deoxidizing element.
Uvedené nedostatky odstraňuje meď pre chladiarenské rúrky, ktorá pozostáva v % hmotnosti minimálně z 99,9 °/o médi a z fosforu, pričom obsah primiešaním je stopový až do 0,001 % bizmutu, 0,001 % síry, 0,002 % niklu, 0,002 % antimonu, 0,002 % arzenu, 0,002 % cínu, 0,005 % olova, 0,005 % železa a 0,008 % zinku podfa vynálezu, ktorého podstata spočívá v tom, že je legovaná fos- forom na množstvo 0,015 až 0,040 % hmotnosti. Ďalej podstata vynálezu spočívá v tom, že legovanie taveniny médi fosforom sa vykonává až po jej dezoxidácii dřeveným chlím. Výhody médi podfa vynálezu sú v tom, že neobsahuje kyslík, čo sposobuje jej legovanie fosforom a tým pri jej ohřeve v redukčnej atmosféře nedochádza k interkryštalickému porušeniu v dosledku vzniku vodnej páry. Zároveň pri žíhaní v oxidačnej atmosféře zaručený obsah fosforu v medl zabezpečuje antioxidačnú odolnost takejto médi. Příklad chemického zloženia médi podfa vynálezu v % hmotnosti: je 99,2 % médi, 0,037 % fosforu, stopy až 0,0001 % bizmutu, 0,0001 % olova, 0,0001 % mangánu, 0,001 °/o cínu, 0,002 % niklu, 0,003 % železa, 0,008 % zinku, 0,001 % arzénu a 0,002 % antimonu. Dezoxidácia taveniny médi sa uskutočnila suchým dřeveným uhlím v taviacej peci po dobu 25 minút. Legovanie fosforom sa uskutočnilo formou predzliatiny CuPlO v liacej jednotke.The above drawbacks are eliminated by copper pipes for refrigerant pipes, which consist of at least 99.9% by weight of the medium and phosphorus, with a trace content of up to 0.001% bismuth, 0.001% sulfur, 0.002% nickel, 0.002% antimony, 0.002% 0.005% lead, 0.005% iron and 0.008% zinc according to the invention, characterized in that it is alloyed with phosphate to 0.015 to 0.040% by weight. Furthermore, the invention is based on the fact that the alloying of the melt with phosphorus is carried out only after it has been deoxidized with wood chlorine. The advantages of the medium according to the invention are that it does not contain oxygen, which makes it alloyed with phosphorus and thus does not intercrystallize when heated in a reducing atmosphere due to the formation of water vapor. At the same time, the phosphorus content of medl, guaranteed in the oxidizing atmosphere, ensures the antioxidant resistance of such medium. Example of the chemical composition of the medium of the invention in% by weight: is 99.2% medium, 0.037% phosphorus, traces up to 0.0001% bismuth, 0.0001% lead, 0.0001% manganese, 0.001% tin, 0.002% nickel , 0.003% iron, 0.008% zinc, 0.001% arsenic and 0.002% antimony. The melt oxidation of the melt was carried out with dry wood charcoal in a melting furnace for 25 minutes. Phosphorus alloying was performed in the form of a CuP10 alloy in the casting unit.
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS335682A CS243756B1 (en) | 1982-05-10 | 1982-05-10 | Honey for refrigeration pipes and its production |
| CS858065A CS256724B1 (en) | 1982-05-10 | 1985-11-08 | A method of producing copper pipes for refrigeration purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS335682A CS243756B1 (en) | 1982-05-10 | 1982-05-10 | Honey for refrigeration pipes and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS243756B1 true CS243756B1 (en) | 1986-06-12 |
Family
ID=5373352
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS335682A CS243756B1 (en) | 1982-05-10 | 1982-05-10 | Honey for refrigeration pipes and its production |
| CS858065A CS256724B1 (en) | 1982-05-10 | 1985-11-08 | A method of producing copper pipes for refrigeration purposes |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS858065A CS256724B1 (en) | 1982-05-10 | 1985-11-08 | A method of producing copper pipes for refrigeration purposes |
Country Status (1)
| Country | Link |
|---|---|
| CS (2) | CS243756B1 (en) |
-
1982
- 1982-05-10 CS CS335682A patent/CS243756B1/en unknown
-
1985
- 1985-11-08 CS CS858065A patent/CS256724B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS806585A1 (en) | 1987-09-17 |
| CS256724B1 (en) | 1988-04-15 |
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