ASTM A747 Casting Tsanangudzo: Magiredhi, Mechanical Properties & Mashandisirwo 

Kana mainjiniya asarudza simbi isina simbi yekukanda zvikamu zveyakakwira-mutoro sevhisi ine mwero corrosion kuratidzwa, ASTM A747 ndeimwe yeanowanzo tariswa zvinhu zviyero. ASTM A747 inovhara kunaya-kuomesa simbi isina tsvina castings, chikamu che zvikamu zvesimbi izvo zvinopa musanganiswa wakaenzana wesimba repamusoro, kuomarara kunodzoreka uye kusagadzikana kwemarara. Kusiyana neakajairika austenitic Stainless simbi castings seCF8M, alloys aya anovandudza mashandiro emuchina kuburikidza neanodzorwa kupisa kurapwa, pane kuvimba chete nekusimba-mhinduro kusimbaradza. Gwaro iri rinovhara chiyero chakajairwa, mamakisi anowanikwa, miganho yemakanika, maitiro ekuora, mitemo yekurapa kupisa, mashandisirwo akajairika uye makiyi ekutarisisa mafungidziro eASTM A747 castings.

Chii chinonzi ASTM A747?

ASTM A747 ndiyo ASTM yakajairwa kutsanangurwa kwekunaya-kuomesa simbi isina tsvina. Inotsanangura zvinodikanwa zvekuumbwa kwemakemikari, zvivakwa zvemuchina, kurapwa kwekupisa, kuyedzwa, kuongorora uye kumaka kwezvakakandwa zvikamu zvakagadzirwa kubva kumhuri iyi yealloy.

Iyi chiyero inoshanda kune akakandwa zvikamu zvinogadzirwa nenzira dzakajairwa kukanda maitiro, kusanganisira kuisa mari. Inonangana nezvikamu zvinoda simba repamusoro pane zvakajairwa austenitic Stainless steel castings uku ichichengetedza inoshanda inodzivirira corrosion performance. ASTM A747 inoita kwete chivharo chakagadzirwa mvura-inoomesa zvigadzirwa zvesimbi isina tsvina. Izvo zvakare hazvibatanidzi cast austenitic, ferritic uye martensitic stainless mamakisi anotsanangurwa pasi peakasiyana zviyero seASTM A351.

Vagadziri vanowanzo tsanangura ASTM A747 painjiniya kudhirowa kwevhavhavhavha, zvikamu zvepombi uye zvimiro zvehardware zvakafumurwa kune zvakapfava kusvika kune pakati zvinoodza nharaunda.

Verification note: Simbisa yazvino inoshanda ASTM A747 yekudzokorora nhamba uye iyo yepamutemo yakazara chiyero zita usati waburitsa yekupedzisira kudhirowa.

ASTM A747 Standard Grades Overview

ASTM A747 inotsanangura mutsara wekunaya-kuomesa simbi isina simbi yekukanda mamakisi. Giredhi rega rega rinoratidza kugadzirwa kwekemikari kuti isvike pane imwe chiyero chesimba, kuomarara uye kusadzivirirwa nekuora mushure mekuoma kwezera.

Magiredhi anozivikanwa nemazita akajairika. Mazhinji akakanda mamakisi pasi peASTM A747 ndiwo anokanda akaenzana neanozivikanwa akaitwa kunaya kwemvura-kuomesa alloys. Nekudaro, ma microstructures akakandwa uye zvivakwa zvinosiyana kubva kune avo vakagadzira uye hazvigone kubatwa sekuchinjana.

• Magiredhi akaiswa muboka nenhanho dzesimba dzakanangwa
• Alloying zvinhu zvinosanganisira mhangura, niobium uye molybdenum inogonesa kunaya-kuoma kuita.
• Kusarudzwa kwegiredhi kunofanirwa kugara kwakabatana neyakatsanangurwa mamiriro ekurapa kupisa

Verification note: Tora iyo yakazara yegiredhi giredhi runyorwa kubva kune yazvino ASTM A747 gwaro rekuita basa rekutsanangura.

Mechanical Properties yeASTM A747 Castings

Mechanical zvimiro zveASTM A747 zvakakandwa simbi zvikamu zvinotsamira zvakanyanya pane yakashandiswa kupisa kupisa mamiriro. Giredhi rimwe chetero rinodzosa simba rekusimba rakasiyana kwazvo, goho simba, kurebesa uye kuomarara mhedzisiro kana yakaedzwa mumamiriro ekugadziriswa-kutarisana nenyika yevakuru.

Zvivakwa zvinosimbiswa uchishandisa akaparadzana akakanda bvunzo makuponi kana anomiririra bvunzo mabhuroko achitevera iyo sampling mitemo muyero. Kugashira kunotongwa zvichipesana nehushoma hunodiwa hunokosha pane kudoma hunhu hwechinangwa.

Tafura chinyorwa: Tafura iri pazasi itemplate. Gadzirisa maseru ese ane hushoma hushoma kukosha kubva kune inoshanda ASTM A747 revision isati yashandiswa tekinoroji. Usatsiva yakagadzirwa 17-4 PH data yezvivakwa pane zvinodiwa zvekukanda.

Aya emhando yepamusoro-simba anoita kuti ASTM A747 Stainless simbi yekukanda zvikamu zvinokodzera akaremerwa zvikamu uko CF8 kana CF8M castings haasangana negoho simba zvinodiwa.

Corrosion Resistance yeASTM A747 Stainless Steel Castings

ASTM A747 inonaya-inoomesa simbi isina tsvina inopa yakavimbika kusarudzika kwenzvimbo dzakapfava uye dzine ngura zvine mwero, asi hazvienderane nekuita kweyepamusoro-alloy austenitic kana super duplex cast stainless steels.

Corrosion performance inotarwa negiredhi chemistry, kupisa kwemhando yekurapa, kupera kwepamusoro uye nharaunda yebasa:

• Inokodzera mvura yakachena, kuratidzwa kwemuchadenga, dilute organic acids uye yakaderera-chloride sevhisi.
• Njodzi yepamusoro yegomba uye kukoromoka kwegora mune yakanyungudutswa chloride, brine kana yakasimba acidic nharaunda.
• Kuchembera kusina kunaka kana kuchembera kunogona kushatisa zvese mashandiro emuchina uye nekupokana nekuora kwenzvimbo

Mazhinji mainjiniya anonongedzera PREN (Pitting Resistance Equivalent Number) kukosha paunenge uchiongorora mamakisi ebasa rine chloride.

Verification note: Simbisa yakajairwa tsinhiro uye mumiriri PREN referensi renji kune yega yega ASTM A747 giredhi.

Zvinodiwa Kurapa Kupisa kune ASTM A747 Castings

Kurapa kwekupisa haisi sarudzo yekupedzisa nhanho yeASTM A747 castings. Zvinosungirwa kuzadzisa zvinhu zvakatsanangurwa zvivakwa. Chiyero chinotsanangudza nhanho mbiri-nhanho: mhinduro yekurapa inoteverwa nekunaya kwemvura kuomesa (kuchembera).

1. Kugadziriswa kwekugadzirisa: Kukandira kunodziiswa mukati metembiricha yakatsanangurwa uye inobatwa kuti inyunguse intermetallic precipitates musimbi matrix, yozotonhodzwa zvakakodzera. Izvi zvinogadzira yakapfava, yakafanana baseline microstructure.
2. Kuchembera / kunaya kwemvura kuomesa: Kukandira kunodzoserwa kune yakaderera, yakanyatsodzorwa tembiricha uye inobatwa. Fine precipitates inoumba mukati me matrix, ichisimudza goho simba, kusimba simba uye kuoma uku ichideredza ductility.

Kutenderera kwakasiyana-siyana kuchembera kunogadzira akasiyana emasimba egiredhi rimwe chete. Kutenga maodha uye madhirowa einjiniya anofanirwa kutaura zvakajeka giredhi uye mamiriro anodiwa ekurapa kupisa. Castings inopihwa pasina iyo chaiyo kuchembera kutenderera inokundikana mekiniki yekugamuchira pfuma bvunzo.

Verification note: Unganidza iwo epamutemo tembiricha mabhendi, kubata nguva uye kutonhora zvinodiwa kune yega giredhi uye mamiriro kubva ASTM A747.

Zvakajairika Zvishandiso zveASTM A747 Cast Steel Zvikamu

ASTM A747 corrosion-resistant castings inosarudzwa apo madhizaini anoda yakakwira mechanic simba rakasanganiswa pamwe nepakati corrosion kuramba. Makesi ekushandisa akajairwa anotora mvura yekubata, midziyo yemagetsi, indasitiri yakajairika uye yekuwedzera oiri & gasi Hardware.

Yakajairika ASTM A747 yakakandwa zvikamu zvinosanganisira:

• Mapombi epombi, pombi casings uye kupfeka mhete
• Miviri yevharuvhu, trim yevharuvhu uye zvikamu zvekugara
• Fluid control Hardware uye zvikamu zvekubatanidza
• Yakakwira-mutoro zvimiro zvekukanda zvakafumurwa kune hunyoro kana zvinyoro makemikari kurwisa
• Mechanical fastener maassemblies nemabhuraketi anoda kuomarara uye kusaita ngura

Mudhuri mutete, wakanyanya-chaiyo akasiyana ezvikamu izvi anowanzo kugadzirwa uchishandisa silica sol investing casting. Zvinorema zvimiro zvekukandira zvinogona kushandisa mamwe maitiro ekukanda kana kupedzisa kwepamusoro uye kushivirira zvinodiwa zvisinganyanyi kuomesesa.

ASTM A747 vs Zvimwe Zvakajairwa Cast Stainless Simbi Mayero

Iwo anowanzo kuenzanisa mainjiniya anoita ASTM A747 achipesana neASTM A351 CF8M, kunyangwe mamwe akakandwa masimbi emhando anoshandiswawo muindasitiri.

• ASTM A747: Kunaya-kuomesa Stainless simbi castings. Inopa goho repamusoro uye simba rekusimba mushure mekukwegura; corrosion resistance iri pakati nepakati. Zvivakwa zvekupedzisira zvinoenderana zvizere nekupisa kurapwa.
• ASTM A351 CF8M: Austenitic Stainless steel casting (yakaumbwa yakaenzana ne316). Simba rezasi, rakanakisa ductility, yakatsiga corrosion resistance; hapana nzira yekuomesa zera inodiwa.

Sarudza ASTM A747 kana kusimba kwepamusoro kana kuoma kuri iko kunonyanya kudiwa uye sevhisi yekuora yakapfava kusvika pakati. Sarudza CF8M kana inowirirana austenitic corrosion performance, weldability uye ductility inotakura yepamusoro pekutanga pane yakanyanya simba.

Verification note: Muchinjika-tarisa akajairwa zvivakwa matafura kuti uone kukosha kwekuenzanisa kwakaringana kune yakarongwa dhizaini yekuongorora.

Mafungiro Akakosha PaKutsvaga ASTM A747 Stainless Steel Kukanda Zvikamu

Zvakajeka kutsanangurwa paunenge uchitsvaga ASTM A747 Stainless simbi yekukandira zvikamu zvinoderedza quotation kusanzwisisana, kunonoka kugadzira uye kurambwa castings.

• Nyora ese ari maviri giredhi uye anodiwa kupisa mamiriro ekudhirowa uye RFQs
• Taura zvinodikanwa zvebvunzo makuponi, NDT, kuyedza kumanikidza kana kuongorora kwepamusoro
• Simbisa kuti dhizaini inonzwisisa kugadzirwa 17-4 PH haigone kutsiviwa pasina mvumo yeinjiniya.
• Rondedzera maitiro ekukanda zvinodiwa: kuisa mari (silica sol kana girazi remvura), kukanda jecha, kana dzimwe nzira.
• Inoda kupisa kurapwa traceability zvitupa; mechanical test mishumo inofanirwa kuenderana neyakatsanangurwa kupisa kupisa mamiriro

Mazhinji matambudziko emhando neA747 castings anobva pane zvisina kukwana zvakatemwa, pane kutadza kukanda basa. Ambiguous heat treatment zvinodiwa ndizvo zvinonyanya kukonzera mudzi.

Mibvunzo Inowanzo bvunzwa Nezve ASTM A747

Ko ASTM A747 castings inogona kuiswa welded?

ASTM A747 kunaya-kuomesa yakakandwa simbi isina tsvina inogona kubatanidzwa. Nekudaro, welding inoshandura iyo yemuno microstructure uye zvinhu zvinhu. Weld nzvimbo dzinorasikirwa nezera-yakaomeswa mamiriro, uye mushure-weld kupisa kurapwa kunogona kudikanwa kudzoreredza chinangwa chemechani kuita. Weld maitiro anofanirwa kuve akakodzera kune chaiyo giredhi uye sevhisi application, uye vagadziri vanofanirwa kutarisira kuderedzwa kwesimba renzvimbo munharaunda yeweld.

Iyo ASTM A747 yakafanana neyakagadzirwa 17-4 PH?

Kwete. Nepo akawanda ASTM A747 mamakisi ari anokandira anoenderana akaitwa 17-4 PH, castings anoratidza akasiyana microstructures, kusachena miganhu uye shoma mechanical zvinhu zvinotsanangurwa nechiyero. Kutsiva kwakananga pakati peakakandirwa uye mafomu akagadzirwa kunoda kubvumidzwa kweinjiniya.

Ndeapi maitiro ekukanda akakodzera ASTM A747?

ASTM A747 pachayo hairevi imwe nzira yekukanda. Investment casting inoshandiswa zvakanyanya kune yakaoma, chaiyo ASTM A747 Stainless simbi yekukanda zvikamu. Kukandira jecha kunogonekawo kune akakura zvikamu zvine looser dimensional zvinodiwa, zvichienderana nekugona kweiyo foundry.

ASTM A747 inogona kutsiva CF8M?

Chete mushure mekunge timu yedhizaini yaongorora simba, ductility, corrosion nharaunda, welding performance uye zvipingamupinyi zvekurapa kupisa. ASTM A747 inopa simba repamusoro, asi haina kukwirisa pasi rose mukuramba corrosion kana kuchinjika kwekugadzira.

Mhedziso

ASTM A747 ndiyo yekutanga kududzirwa kwekunaya-kuomesa simbi isina tsvina yakakandwa zvikamu zvesimbi. Chayo chikuru chakanakira kugona kuwana simba repamusoro uye kudzora kuomarara kuburikidza nekunaya kwemvura kuoma, uku ichichengeta inogona kushandiswa corrosion resistance kune akawanda maindasitiri nharaunda.

Kurongeka kwakaringana uye kutsvaga kunovimba nemapoinzi matatu akakosha: kusarudza iro giredhi, kutsanangura inodiwa yekupisa kupisa mamiriro, uye kusimbisa iyo yakawanikwa inopa inoteedzera bvunzo zvinyorwa. Kune maapplication anoda simba rakakwirira kupfuura akajairwa austenitic stainless simbi yekukandira, ASTM A747 Stainless simbi yekukandira zvikamu zvinopa yakavimbika tekinoroji mhinduro - chero sevhisi nharaunda inoenderana nekuora kwealloy.