BAYANI
Nau'in 347/347H bakin karfe shine austenitic daraja na chromium karfe, wanda ya ƙunshi Columbus a matsayin stabilizing kashi. Hakanan ana iya ƙara Tantalum don samun kwanciyar hankali. Wannan yana kawar da hazo carbide, kazalika da lalata intergranular a cikin bututun ƙarfe. Nau'in bututun bakin karfe na 347/347H yana ba da mafi girman kaddarorin fashewa da damuwa fiye da sa 304 da 304L. Wannan ya sa su dace da bayyanar da hankali da lalata intergranular. Bugu da kari, hada da Columbus yana ba da damar bututu 347 su sami kyakkyawan juriya na lalata, har ma sun fi na bututun bakin karfe 321. Duk da haka, 347H karfe ne mafi girma carbon abun da ke ciki maimakon bakin karfe bututu sa 347. Saboda haka, 347H karfe shambura bayar da ingantattun high zafin jiki da creep Properties.
347 / 347H BABBAN BUBUWAN KARFE
Wadannan sune kaddarorin bututun bakin karfe 347/347H wanda Arch City Karfe & Alloy ke bayarwa:
Juriya na Lalata:
- Yana nuna juriya na oxidation kama da sauran bakin karfe austenitic
- An fi so fiye da digiri 321 don ruwa da sauran ƙananan yanayin zafi
- Better high zafin jiki Properties fiye da 304 ko 304L
- Kyakkyawan juriya ga faɗakarwa a cikin yanayin zafi mai zafi
- Ya dace da kayan aiki masu nauyi waɗanda ba za a iya shafe su ba
- An yi amfani da shi don kayan aiki da ke aiki tsakanin 800 zuwa 150F (427 TO 816°C)
Weldability:
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347 / 347H bakin karfe bututu / bututu ana daukar su mafi weldable tsakanin duk high sa steels bututu
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Ana iya walda su ta duk hanyoyin kasuwanci
Maganin zafi:
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347/347H bakin karfe bututu da bututu suna ba da kewayon zafin jiki na 1800 zuwa 2000 ° F
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Za su iya zama mai ba da taimako na damuwa ba tare da wani haɗari na lalata intergranular na gaba ba a cikin kewayon hazo na carbide na 800 zuwa 1500 ° F.
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Ba za a iya taurare ta maganin zafi ba
Aikace-aikace:
Ana amfani da bututun 347/347H akai-akai don ƙirƙira kayan aikin da yakamata a yi amfani da su a ƙarƙashin yanayin lalata. Har ila yau, ana amfani da su a cikin masana'antun tace man fetur. Manyan aikace-aikace sun haɗa da:
- High zafin jiki tafiyar matakai na sinadaran
- Bututun musayar zafi
- Babban matsa lamba tururi bututu
- Babban zafin tururi da bututu / bututu
- Tsarukan shaye-shaye masu nauyi
- Radiant superheaters
- Bututun matatar gabaɗaya
HADIN KASHIN KIMIYYA
| Haɗin Kan Sinadari % (mafi yawan ƙima, sai dai in an lura) | ||||||||
| Daraja | C | Cr | Mn | Ni | P | S | Si | Cb/Ta |
| 347 | 0.08 max | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.04 max | 0.30 max | 0.75 max | min: 10x C max: 1.0 |
| 347H | min: 0.04 max: 0.10 | min: 17.0 max: 20.0 | 2.0 max | min: 9.0 max: 13.0 | 0.03 max | 0.30 max | 0.75 max | min: 10x C max: 1.0 |
Lokacin aikawa: Oktoba-09-2020