Amabhawodi anekhanda le-hex e-A2-70 stainless steel enziwe nge-304 austenitic stainless steel futhi akalwa nge-property class A2-70, enikeza amandla okudonsa okungenani angu-700 MPa kanye ne-0.2% proof stress okungenani engu-450 MPa. Ngokungafani nezinto zokubopha ze-carbon steel, amabhawodi e-A2-70 awadingi plating noma i-coating — i-chromium oxide passive film yemvelo inikeza ukumelana okuhle kakhulu nokugqwala komoya, amanzi ahlanzekile, kanye nezinhlobonhlobo zezinto zamakhemikhali, okubenza bafanele izindawo zangaphandle, ezinomswakama, kanye nezindawo ezigqwala kancane. Amabhawodi anemisonto egcwele ngokwe-DIN 933 / ISO 4017 / GB 5783 futhi atholakala nge-M8 ne-M16 njengosayizi abagqanyisiwe, kanti uhla oluphelele lusuka ku-M4 kuya ku-M36 luyatholakala uma luceliwe. Izicaciso Ezibalulekile Ipharamitha Isicaciso Impahla 304 stainless steel (A2, elingana ne-1.4301) I-Property Class A2-70 Izinga DIN 933 / ISO 4017 / GB 5783 Umisonto Metric coarse (M), umsonto ogcwele Ukuqedwa Kwendawo Okujwayelekile / okwenziwe i-passivated (isiphetho semvelo se-stainless steel) Ububanzi Bomsonto M4 – M36 (M8, M16 kusitokwe) Ububanzi Bobude 6 mm – 600 mm Uhlobo Lwekhanda Ikhanda le-hexagon Izinga Lomkhiqizo A Izici Zemishini (ISO 3506-1 / EN ISO 3506) Isici Inani Amandla Okudonsa Okungenani (Rm) 700 MPa I-0.2% Proof Stress Okungenani (Rp0.2) 450 MPa Ukwelulwa Okungenani Ngemuva Kokuphuka (A) 0.4d Isimo Sempahla Induku edonswe ngokubanda Igama elithi "A2-70" lilandela uhlelo lokuqamba lwe-ISO 3506-1: "A" lisho i-austenitic stainless steel, "2" ikhombisa iqembu lokumelana nokugqwala (A2 ihambisana ne-grade 304), kanti "70" imelela ingxenye eyodwa yeshumi yamandla okudonsa okungenani nge-MPa (700 MPa). Izinto zokubopha ze-property class 70 ngokuvamile zenziwe ngenduku edonswe ngokubanda, enikeza amandla adingekayo ngokuqinisa umsebenzi ngaphandle kwesidingo se-quenching kanye ne-tempering. Impahla Nokumelana Nokugqwala I-Type 304 (A2) stainless steel iqukethe cishe u-18% we-chromium kanye no-8% we-nickel, yakhe isakhiwo se-austenitic esizinzile esimelana nokugqwala kanye nokugqwala emazingeni okushisa abanzi. Izici ezibalulekile zifaka: Ukumelana okuhle kakhulu nokugqwala komoya — kufanele izindawo zangaphandle, zasogwini (indawo engeyona eye-splash zone), kanye nezindawo ezinomswakama Ukumelana namanzi ahlanzekile kanye namakhemikhali alula — kusebenza ngempumelelo kuma-organic acids, odayi, kanye nezinto eziningi ze-food-grade Akunazibuthe esimweni se-annealed — ukusebenza ngokubanda kungase kubangele izibuthe ezincane (relative permeability μr ≈ 1.8) Akukho ingozi ye-hydrogen embrittlement — akudingeki i-electroplating, okususa isinyathelo se-dehydrogenation esidingekayo kumabhawodi e-high-strength carbon steel ane-coating Ezindaweni ezinolaka olukhulu ezibandakanya ama-chloride, ukucwiliswa emanzini olwandle, noma ama-acid anamandla, i-A4 (316) stainless steel inconywa njengenye indlela. Izindinganiso Nokuhambisana La mabhawodi ahambisana ne-DIN 933 (indinganiso yaseJalimane yezikulufu ezinemisonto egcwele nekhanda le-hexagon), i-ISO 4017 (okulingana kwayo kwamazwe ngamazwe, amagreddi omkhiqizo A no-B), kanye ne-GB/T 5783 (indinganiso kazwelonke yaseShayina yamabhawodi anekhanda le-hex anemisonto egcwele). Ukushintshana kobukhulu kuzo zonke lezi zindinganiso kuvumela amabhawodi ukuthi asetshenziswe emishinini nasezihlanganisweni zamazwe ngamazwe ngaphandle kokuguqulwa. Ukumaka kwe-A2-70 kugxivizwa ekhanda lebhawodi ukuze kubonakale futhi kulandeleke. Ukuqedwa Kwendawo Ukuqedwa okujwayelekile okujwayelekile / okwenziwe i-passivated — ukubukeka kwemvelo, okukhanyayo kwe-stainless steel ngemuva kwe-pickling kanye ne-passivation treatment. Lokhu kuqedwa kunikeza ukumelana okuphezulu kakhulu nokugqwala okungokwemvelo ku-304 alloy, njengoba kugcina ungqimba lwe-passive olunothe nge-chromium ebusweni. Akukho coating eyengeziwe esetshenziswayo, okusho ukuthi akukho ingozi yokulimala kwe-coating, ukuqhekeka, noma i-hydrogen embrittlement. Ezinhlelweni ezidinga ubuhle obuthile noma ukugcotshwa okwengeziwe, izinketho ezifana ne-shot blasting noma i-PTFE coating zingatholakala uma ziceliwe. Izinhlelo Zokusebenza Amabhawodi e-A2-70 stainless steel hex acaciswa lapho ukumelana nokugqwala nokubukeka okuhlanzekile kuyizinto ezibalulekile: Imishini yokucubungula ukudla neziphuzo Ukukhiqizwa kwemithi kanye nemishini yezokwelapha Amapayipi nemikhumbi yezitshalo zamakhemikhali ne-petrochemical Izinhlelo zokuhlanza amanzi kanye nokukhipha usawoti emanzini Izakhivo zasolwandle nezasogwini (ngaphezulu kwedekhi kanye ne-splash-zone nge-A4 upgrade) Ukubopha kwezakhiwo kanye nobuso bezakhiwo Izinhlelo zokufaka i-solar ne-photovoltaic Izindawo zikagesi nezokuxhumana Osayizi Abatholakalayo (Izibonelo Ezikhethiwe) Umsonto (M) Ububanzi Bobude Obujwayelekile I-Pitch (mm) I-Hex Across-Flats (s) M8 10 – 200 mm 1.25 13 mm M10 10 – 300 mm 1.5 16 mm M12 12 – 500 mm 1.75 18 mm M16 20 – 600 mm 2.0 24 mm M20 25 – 600 mm 2.5 30 mm Uhla oluphelele luyatholakala kusuka ku-M4 kuya ku-M36, nobude obufika ku-600 mm. I-M8 ne-M16 zigcinwa esitokweni esilungele ukuthunyelwa ngokushesha.