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IBanga lesi-8.8 i-Dacromet Hex Bolt –IN 933 | ISO 4014 | I-Hexagon Bolt Egcwele Intambo Ene-Dacromet Anti-Corrosion Coating
2026-07-06
I-Grade 8.8 Dacromet DIN 933 hex bolt ihlanganisa amandla emishini asezingeni eliphezulu nokuvikela ukugqwala okuhamba phambili embonini. Lesi sithambiso samukelwa kabanzi ku-steelwork yesakhiwo sangaphandle, amandla omoya, ingqalasizinda kaloliwe, nokwakhiwa kwebhuloho, lesi sithambiso siletha ukusebenza okuthembekile kokubopha ngaphansi kwezimo zemvelo ezidingayo - ngaphandle kwengozi ye-hydrogen embrittlement ehlobene nezinye izindlela ezifakwe ugesi.
Ingxenye 1 - Ukuqonda Ibanga 8.8
Ngokusho kwe-ISO 898-1, ukuqokwa kwesigaba sendawo yebhawodi kuqukethe izinombolo ezimbili ezihlukaniswe iphoyinti ledesimali. OkweBanga 8.8:
Idijithi yokuqala (8): Ibonisa i-1/100 yamandla okubamba amandla okuzisholo ku-MPa — okungukuthi, amandla amancane okudonsa = 800 MPa.
Idijithi yesibili (8): Ibonisa isilinganiso samandla amancane esivuno ukuze sibe namandla amancane e-tensile × 10 — okungukuthi, isilinganiso sesivuno = 0.80, okusho ubuncane bamandla esivuno = 640 MPa.
Izakhiwo Zemishini
| Impahla | Inani | Okujwayelekile | Indlela Yokuhlola |
| Amandla Okuqina (min.) | 800 MPa | ISO 898-1 | Ukuhlolwa kwe-tensile |
| Amandla Okukhiqiza (imiz.) | 640 MPa | ISO 898-1 | Ukuhlolwa kwe-tensile |
| Ubufakazi Bomthwalo Wengcindezi | 580 MPa | ISO 898-1 | Umthwalo wobufakazi |
| Isilinganiso Sesivuno | 0.80 | ISO 898-1 | Ukubala |
| Ukuqina (Vickers) | 245–335 HV | ISO 6507 | Ukuhlolwa kwe-Vickers |
| Ukuqina (Rockwell) | 22–32 HRC | ISO 6508 | Ukuhlolwa kwe-Rockwell |
| I-Elongation at Break (min.) | 12% | ISO 898-1 | Ukuhlolwa kwe-tensile |
| Ukuqina Okunomthelela (min.) | 52 J @ -20 °C | ISO 898-1 | Ukuhlolwa kwe-Charpy |
Izibophelelo zeBanga le-8.8 zenziwa ngensimbi ye-carbon emaphakathi (isb., 45# / SAE 1045) noma insimbi ye-alloy ephansi (isb., 40Cr / SCM435) futhi ingaphansi kokwelashwa kokushisa nokucisha (Q&T) ukuze kuzuzwe iphrofayela yamandla edingekayo. Inhlanganisela yamandla aqine kakhulu wokushuba kanye nesilinganiso sesivuno esilawulwayo kwenza amabhawodi eBanga lesi-8.8 athembeke kakhulu ekuxhumekeni kwesakhiwo okulayishwe ngaphambili.
Izinkambu Zokusebenza Ezijwayelekile
Ukwakhiwa kwensimbi: Ukubhowula kwesakhiwo kumafreyimu, imishayo, ama-trusses (BS EN 14399 / ASTM A325-elingana).
Ingqalasizinda: Ukwakhiwa kwebhuloho, ojantshi be-crane, onogada bomgwaqo onguthelawayeka, amajoyinti okunweba.
Amandla avuselelekayo: Ukuxhumeka kwesisekelo sombhoshongo we-turbine yomoya, izakhiwo ezifakwa elanga.
Imishini: Amafreyimu emishini yenhloso ejwayelekile, okokusebenza kwezolimo, ukuphatha impahla.
Ezezimoto (okungabalulekile): Ukukhwezwa kwe-chassis, umzimba-to-frame, izisekelo zenjini.
Ingxenye 2 - DIN 933 Hex Bolt Standard
I-DIN 933 (i-Deutsches Institut für Normung, i-German Standards Institute) ichaza izidingo zobukhulu nezejiyomethri zamabhawudi angu-hexagon acushwe ngokugcwele anemicu ye-metric pitch emaholoholo. Nakuba ithathelwe indawo kakhulu yi-ISO 4017 ezingeni lamazwe ngamazwe, i-DIN 933 isalokhu iwukucaciswa okuhamba phambili ekuthengweni kwezezimboni zaseYurophu nezomhlaba jikelele.
Izici ezibalulekile ze-DIN 933
Uchungechunge olugcwele: Ibhawodi iluliwe kubo bonke ubude be-shank - ikhulisa ukubandakanyeka kwentambo nokusabalalisa komthwalo.
Ikhanda eliyi-hexagonal: Ububanzi obujwayelekile bamafulethi wonke buvumela ukusetshenziswa nezipanela zemethrikhi ezijwayelekile namasokhethi amasokhethi.
Iphimbo lentambo eqinile: I-Metric coarse pitch (ngokwe-ISO 261 ngayinye) yokuhlanganisa ngokushesha kanye nokumelana nokuxegiswa ngaphansi kokudlidliza.
Ukubekezelelana kobukhulu: Ibanga lomkhiqizo A (m ≤ 10d noma ≤ 150 mm) kanye nebanga lomkhiqizo B (osayizi abakhulu) nge-ISO 4759-1 ngayinye.
I-DIN 933 Dimension Reference Table
Ukuhlonza Ukumaka
Amabhawodi e-DIN 933 eBanga lesi-8.8 anophawu lwesigaba sendawo "8.8" kanye nophawu lomkhiqizi. Lapho i-Dacromet-coated, ukumaka okwengeziwe noma ithegi ingabonisa ukwelashwa kwendawo.
Ingxenye 3 - I-Dacromet Corrosion Protection
I-Dacromet (ephinde ibhalwe ngokuthi i-Dacrotised noma i-DACROMET®) iwubuchwepheshe bokumboza obusetshenziswa emanzini obususelwa ku-zinc-and-aluminium obususelwe ku-flake obususelwa emanzini owasungulwa yi-Diamond Shamrock Chemicals. Ihlinzeka ngokuvikeleka kokugqwala okuvelele komhlatshelo futhi isiphenduke indlela yokwelapha yangaphezulu ekhethwayo yamabhawodi eBanga lesi-8.8 asetshenziswa ezicelweni zangaphandle kanye nezindawo ezinolaka.
Isebenza kanjani i-Dacromet
I-coating iqukethe ama-zinc amaningi agqagqene namaflake e-aluminium ahlanganiswe ndawonye yi-inorganic chromate-based binder matrix, esetshenziswa ngokuphotha i-dip futhi yelapheka cishe ku-300 °C. I-microstructure enezingqimba idala indlela ehlukumezayo yama-ejenti ezonakalisayo, ihlinzeka kokubili umgoqo kanye nokuvikelwa komhlatshelo (i-galvanic):
Ukuvikelwa kwesithiyo: Izendlalelo ze-flake eziminyene, ezigqagqene zivimba umswakama nama-ion e-chloride ukuthi angafinyeleli engxenyeni engaphansi yensimbi.
Ukuvikelwa komhlatshelo (galvanic): Ama-zinc flakes angaphansi kwe-electrochemically kunensimbi; zigqwala ngokukhethayo, zivikela imiphetho yensimbi eveziwe ezindaweni ezisikiwe nasezindaweni ezilimele.
Umthelela wokuziphilisa: Imikhiqizo ye-zinc corrosion ivala kancane iziphambeko ezincane zokunamathela, inwebe isikhathi sokuvikela.
Idatha Yokusebenza Okubalulekile
| Impahla | I-Dacromet | I-Hot-Dip Galvanizing | I-Zinc Electroplating | I-Phosphating |
| Ukumelana Nesifutho Sosawoti | ≥ 480 h (ingafinyelela ku-1000+ h) | 200–500 h | 96–120 h | <72 h |
| Ukuqina Kokunamathela | 6–10 µm | 50–100 µm | 5–15µm | 5–15µm |
| I-Hydrogen Embrittlement | Lutho (ukubhaka akudingekile) | Lutho | Ingozi ephezulu | Ingozi ephansi |
| Ukubekezelela Intambo | Akuthintekile (ijazi elincanyana) | Okuvame ukuthinteka | Ngokujwayelekile KULUNGILE | Ngokujwayelekile KULUNGILE |
| I-RoHS / REACH Iyahambisana | Yebo (i-hexavalent-Cr-free) | Yebo | Iyahlukahluka | Yebo |
| Uhlelo lokusebenza olujwayelekiles | Isakhiwo sangaphandle, umbhoshongo womoya, ibhuloho | Isindayo ngaphandle | Ngasendlini/ukukhanya | Ngasendlini |
Ukuhlolwa kwesifutho sikasawoti nge-ISO 9227 ngayinye. Ugqinsi olujwayelekile lwe-Dacromet: 6–10 µm. Imiphumela ingase ihluke ngendlela ethile yokwakheka kanye nendlela yohlelo lokusebenza.
Amazinga Nezicaciso Ezisebenzayo
I-ISO 10683: Izembatho ze-zinc flake ezingafakwa ngogesi zezixhumi.
I-DIN EN ISO 10683: Ukwamukelwa kwe-European ISO 10683.
I-ASTM F1136: I-Zinc/aluminium yokuvikela ukugqwala kwezinsimbi.
I-VDA 235-104: Izinga lezimoto laseJalimane lezingubo ze-zinc flake.
Mayelana ne-Fujirui Metal — Umkhiqizi Wokubopha Obungcweti Nomthengisi
I-Fujirui Metal ikhiqiza futhi ithumele kwamanye amazwe izixhumi ezinembayo ezinembayo ezihlanganisa iBanga lesi-8.8 / 10.9 / 12.9 amabhawodi we-hex, amabhawodi anentambo egcwele ye-DIN 933, amabhawodi entambo eyingxenye ye-DIN 931, ama-stud bolt, nezixhumi ngokwezifiso. Izinketho zokwelapha ezingaphezulu zifaka i-Dacromet, i-Ruspert, i-hot-dip galvanising, ne-zinc electroplating. Yonke imikhiqizo yenziwa kumazinga e-ISO, i-DIN, kanye ne-ASTM ngezitifiketi zokuhlola izinto ezibonakalayo (MTC).
