Kemikari yakagadzirwa

Gr.3: Carbon content ≤0.19%, silicon content 0.18% -0.37%, manganese content 0.31% -0.64%, phosphorus uye sulfur content ≤0.025%, uye inewo 3.18% -3.82% nickel.

Gr.6: Carbon content ≤0.30%, silicon content ≥0.10%, manganese content 0.29% -1.06%, phosphorus uye sulfur content All ≤0.025%.

Mechanical properties

Gr.3: tensile simba ≥450MPa, goho simba ≥240MPa, elongation ≥30% longitudinally, ≥20% transversely, yakaderera kukanganisa bvunzo tembiricha iri -150 ° F (-100 ° C).

Gr.6: tensile simba ≥415MPa, goho simba ≥240MPa, elongation ≥30% longitudinally, ≥16.5% transversely, yakaderera kukanganisa bvunzo tembiricha iri -50°F (-45°C).

Nzira yekugadzira

Kunyungudutsa: Shandisa choto chemagetsi kana chekushandura uye zvimwe midziyo kuita deoxidize, bvisa slag uye alloy simbi yakanyungudutswa kuti uwane Pure yakanyungudutswa simbi.

Kukungurutsa: Baira simbi yakanyungudutswa muchubhu inotenderedza chigayo chekuumburuka, zvishoma nezvishoma dzikisa dhayamita yechubhu uye uwane ukobvu hwemadziro hunodiwa, uye panguva imwe chete, nyorovesa pamusoro pechubhu yesimbi.

Cold processing: Kuburikidza nechando kugadzirisa senge kutonhora kudhirowa kana kutonhora kutenderedza, iyo chaiyo uye yepamusoro mhando yehubhu yesimbi inogona kuvandudzwa.

Kurapa kwekupisa: Kazhinji, inounzwa mune yakajairwa kana kuti yakajairika uye inodziya mamiriro ekubvisa yakasara kushushikana mukati mechubhu yesimbi uye kuvandudza kushanda kwayo kwakazara.

Nzvimbo yekushandisa

Petrochemical: Inoshandiswa kugadzira yakaderera-tembiricha yekumanikidza ngarava mapaipi uye yakadzika-yekushisa kupisa exchanger mapaipi muminda yepetroleum, indasitiri yemakemikari, nezvimwewo, inogona kusangana nezvinodiwa zvekushandisa munzvimbo dzakaderera-tembiricha, senge liquefied gasi rechisikigo matangi ekuchengetera gasi, yakaderera-tembiricha yekufambisa mapaipi, nezvimwe.

Gasi rechisikigo: Inokodzera gasi rekutapurirana mapaipi uye matangi ekuchengetedza gasi uye zvimwe zvishandiso kuti ive nechokwadi chekushanda kwakachengeteka munzvimbo dzakaderera-tembiricha.

Mimwe minda: Inoshandiswawo musimba, aerospace, uye kuvaka ngarava, senge iyo huru zvimiro zvemukati zvemacondensers, boilers uye zvimwe midziyo mumidziyo yemagetsi, uye chikuru zvimiro zvezvimiro zve hydraulic system, mafuta masisitimu uye zvimwe zvishandiso mumunda weaerospace.

Zvinotsanangurwa uye zviyero

Zvakajairwa kutaurwa uye zviyero zvine huwandu hwakasiyana, senge dhayamita yekunze 21.3-711mm, ukobvu hwemadziro 2-120mm, nezvimwe.
Gr.6 isina musono simbi pombi, kunyanya ASTM A333/A333M GR.6 kana SA-333/SA333M GR.6yakadzika-tembiricha isina musono simbi pombi, chinhu chakakosha maindasitiri, chinoshandiswa zvakanyanya muzviitiko zvakasiyana zvinoda kusimba kwekudzika uye kusimba kwepamusoro. Izvi zvinotevera nhanganyaya yeGr.6 isina musono pombi yesimbi:

1. Implementation mitemo uye zvinhu

Mitemo yekushandisa: Gr.6 isina musono simbi pombi midziyo ASTM A333/A333M kana ASME SA-333/SA333M zviyero, izvo zvakapihwa neAmerican Society for Testing and Materials (ASTM) neAmerican Society of Mechanical Engineers (ASME) uye anoshandiswa kutsanangura zvinodiwa zvehunyanzvi zvepombi yesimbi isina musono.

Material: Gr.6 seamless simbi pombi is nickel-isina low-temperature simbi pombi, iyo inoshandisa aruminiyamu-deoxidized yakanaka-grained yakaderera-tembiricha toughness simbi, inozivikanwawo searuminiyamu-inouraya simbi. Yayo metallographic chimiro ndeye body-centered cubic ferrite.

2. Kuumbwa kwemakemikari

Iyo kemikari yeGr.6 seamless simbi pombi inonyanya kusanganisira:

Carbon (C): Zviri mukati zvakaderera, kazhinji hazvipfuuri 0.30%, izvo zvinobatsira kuderedza brittleness yesimbi.

Manganese (Mn): Zviri mukati zviri pakati pe0.29% uye 1.06%, izvo zvinogona kuvandudza kusimba uye kuoma kwesimbi.

Silicon (Si): Zvinyorwa zviri pakati pe0.10% ne0.37%, iyo inobatsira deoxidation process yesimbi uye inogona kuwedzera simba resimbi kune imwe nzvimbo.

Phosphorus (P) nesarufa (S): Sezvinhu zvisina kuchena, zvirimo zvakaganhurwa, kazhinji hazvipfuuri 0.025%, nekuti yakakwira phosphorus nesarufa inoderedza kuoma uye weldability yesimbi.

Zvimwe zvinosanganiswa zvinhu: senge chromium (Cr), nickel (Ni), molybdenum (Mo), nezvimwewo, zvirimo zvakare zvinodzorwa pamwero wakaderera kuti ive nechokwadi chekuita kwakadzika tembiricha uye kushanda kwakazara kwesimbi.

3. Mechanical properties

Gr.6 isina musono simbi pombi ine yakanakisa michina zvinhu, kunyanya kusanganisira:

Kusimba kwesimba: Kazhinji pakati pe415 ne655 MPa, iyo inovimbisa kuti pombi yesimbi inogona kuchengetedza kuvimbika kwechimiro uye kudzivirira kuputika kana ichimanikidzwa.

Simba regoho: Iko kukosha kwepasi kunosvika 240 MPa (inogonawo kusvika kupfuura 200 MPa), kuitira kuti irege kuburitsa deformation yakawandisa pasi pemamwe masimba ekunze.

Elongation: kwete pasi pe30%, zvinoreva kuti pombi yesimbi ine yakanaka yepurasitiki deformation kugona uye inogona kuburitsa imwe deformation pasina kutyora kana yakatambanudzwa nekunze kwesimba. Izvi zvinonyanya kukosha kuti zvishandiswe munzvimbo dzakaderera tembiricha, nekuti tembiricha yakaderera inogona kuita kuti zvinhu zviome, uye kunaka kwepurasitiki kunogona kuderedza njodzi yekuputika kwakadaro.

Impact kuomarara: Pane yakatarwa tembiricha yakadzikira (senge -45 ° C), simba rekuita rinofanirwa kusangana nezvimwe zvinodiwa nhamba kuburikidza neCharpy impact test verification kuti ive nechokwadi chekuti pombi yesimbi haizoputsiki pasi pekudzika kwetembiricha.