DESCRIPTION
Type 347/347H Stainless simbi ndeye austenitic giredhi yechromium simbi, ine columbium sechinhu chinodzikamisa. Tantalum inogonawo kuwedzerwa kuti uwane kugadzikana. Izvi zvinobvisa kudonha kwecarbide, pamwe neiyo intergranular corrosion mumapombi esimbi. Type 347 / 347H Stainless simbi mapaipi anopa yakakwirira inokambaira uye kushushikana kuputika zvivakwa pane giredhi 304 uye 304L. Izvi zvinoita kuti dzive dzakakodzera kuratidzwa kune sensitization uye intergranular corrosion. Uyezve, kuisirwa kwecolumbium kunobvumira mapaipi mazana matatu nemakumi mana nemanomwe kuti ave nekusagadzikana kwecorrosion, kunyangwe yakakwira kune iyo ye321 simbi isina tsvina pombi. Zvisinei, 347H simbi ndiyo yakakwira carbon composition inotsiva yestainless simbi pombi giredhi 347. Naizvozvo, 347H simbi machubhu anopa yakagadziridzwa tembiricha uye zvinokambaira zvinhu.
347 / 347H Stainless simbi TUBE PROPERTIES
Zvinotevera ndizvo zvivakwa zve347 / 347H simbi isina tsvina pombi inopihwa neArch City Steel & Alloy:
Corrosion Resistance:
- Inoratidza oxidation kuramba yakafanana nemamwe austenitic simbi isina tsvina
- Inofarirwa pamusoro pegiredhi 321 kune aqueous uye mamwe akadzika tembiricha nharaunda
- Zvirinani yakakwirira tembiricha zvivakwa pane 304 kana 304L
- Kuramba kwakanaka kwekunzwa munzvimbo dzekushisa kwepamusoro
- Inokodzera midziyo inorema welded isingagone kuvharwa
- Inoshandiswa kumidziyo inoshanda pakati pe800 kusvika 150°F (427 KUTO 816°C)
Weldability:
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347 / 347H Stainless simbi machubhu / mapaipi anoonekwa seakanyanya welld pakati pese epamusoro giredhi simbi mapaipi.
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Ivo vanogona kusungirirwa nemaitiro ese ekutengesa
Kurapa Kupisa:
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347 / 347H Stainless simbi machubhu uye mapaipi anopa annealing tembiricha kubva 1800 kusvika 2000 ° F.
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Vanogona kuve kuzorora kwekushushikana kwakavharirwa pasina chero njodzi yekuzotevera intergranular corrosion mukati me carbide kunaya kwe800 kusvika 1500 ° F.
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Haikwanise kuomeswa nekurapwa kwekupisa
Applications:
347 / 347H mapaipi anowanzo shandiswa kugadzira michina inofanirwa kushandiswa pasi pekuora kwakanyanya. Zvakare, ivo vanowanzoshandiswa mumaindasitiri ekunatsa petroleum. Zvikumbiro zvikuru zvinosanganisira:
- Kupisa kwakanyanya kwemakemikari maitiro
- Heat exchanger chubhu
- High pressure steam pombi
- Yakakwira tembiricha chiutsi uye boiler pombi/machubhu
- Heavy duty exhaust systems
- Radiant superheaters
- General refinery piping
CHEMICAL COMPOSITION
| Yakajairika Chemical Kuumbwa % (max values, kunze kwekunge aonekwa) | ||||||||
| Giredhi | C | Cr | Mn | Ni | P | S | Si | Cb/Ta |
| 347 | 0.08 max | min: 17.0 hukuru: 20.0 | 2.0 max | min: 9.0 hukuru: 13.0 | 0.04 max | 0.30 max | 0.75 max | min:10x C hukuru: 1.0 |
| 347H | min: 0.04 hukuru: 0.10 | min: 17.0 hukuru: 20.0 | 2.0 max | min: 9.0 hukuru: 13.0 | 0.03 max | 0.30 max | 0.75 max | min:10x C hukuru: 1.0 |
Nguva yekutumira: Oct-09-2020