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Awọn boluti Flange Hexagon pẹlu Ibo Dacromet: Geometry, Ilana, Iṣe ati Itọsọna Apejọ
2026-10-26
1. Ifihan
Awọn boluti Flange - awọn boluti ori hexagon pẹlu flange ti a ṣepọ (oju ifoso) ti a ṣe sinu ori - ti di iyara ti yiyan ni iṣelọpọ adaṣe, apejọ ẹrọ, ati ikole opo gigun ti epo. Nipa didapọ boluti ati ifoso sinu apakan kan, boluti flange jẹ ki o rọrun apejọ, pin kaakiri fifuye clamping lori agbegbe ti o tobi ju, ati pe o ni ilọsiwaju resistance si isọ-ara labẹ gbigbọn.
Ni awọn agbegbe iṣẹ ibajẹ, sibẹsibẹ, awọn anfani ti apẹrẹ flange le ṣee ṣe nikan ti ibora ti o ṣe aabo boluti naa wa laaye niwọn igba ti isẹpo funrararẹ. Dacromet (sinkii-aluminiomu flake) ti a bo ti farahan bi eto idabobo ipata ti o fẹ julọ fun awọn boluti flange ti o ni agbara giga, ti o funni ni resistance sokiri iyọ ni ọpọlọpọ igba ti o tobi ju elekitiro-galvanizing ni ida kan ti sisanra ti galvanizing gbona-dip - ati laisi eyikeyi ewu embrittlement hydrogen.
Nkan yii ṣe alaye jiometirika ati awọn iṣedede ti awọn boluti hex flange, ṣapejuwe ilana ibora Dacromet bi a ṣe lo si awọn boluti flange, ṣafihan awọn afiwera iṣẹ ati awọn iyasọtọ aṣoju, ati funni ni yiyan ilowo ati itọsọna apejọ.
2. Kini Hex Flange Bolt?
Boluti flange hex jẹ boluti ori hexagon ti ori rẹ gbe flange ipin ipin kan ni dada ti nso, fun ISO 4162 / DIN 6921 (metric) ati awọn iṣedede inch-jara ti o jọra. Awọn idile apẹrẹ meji wa:
- Kekere flange jara- iwọn ila opin flange iwapọ fun awọn aaye to muna, ti o wọpọ ni awọn ẹrọ adaṣe;
- Tobi (jakejado) flange jara- to 1.5 × o tẹle ara iwọn dada, ti a lo nibiti awọn ẹru gbigbe ti o ga julọ tabi awọn ohun elo dimole rirọ (aluminiomu, awọn pilasitik) ni ipa.
Ọpọlọpọ awọn boluti flange ni afikun ẹya serrations (radial eyin) lori flange underside. Awọn serrations jáni sinu ibarasun dada, jijẹ awọn resistance si ojulumo bulọọgi-ipopopada ati ki o imudarasi boluti ká resistance si ara-loosening labẹ ifa gbigbọn - lai nilo lọtọ titiipa ifoso.
3. Kí nìdí Dacromet Coating fun Flange Bolts?
Dacromet ti a bo jẹ slurry ti o da lori omi ti zinc ati awọn flakes aluminiomu pẹlu awọn passivators ati awọn binders inorganic. Awọn apakan ti wa ni fibọ-ti a bo, centrifugally yiri lati yọkuro slurry ti o pọju, ti a si mu ni arowoto ni 280-330 ° C fun awọn iṣẹju 20-40; awọn iyika dip-spin meji maa n so fiimu 6–10 μm kan. Awọn boluti Flange jẹ pataki ni ibamu daradara si ilana fibọ-spin:
1.Pari agbegbe- awọn ti a bo ti nṣàn sinu flange-to-shank fillet ati awọn serration grooves, awọn agbegbe ibi ti electroplating igba fi awọn tinrin tabi alaibamu idogo;
2.Uniform sisanra- centrifugal alayipo yoo fun ani awọn fiimu kọja awọn alapin oju flange, toju awọn afiwe ti nso dada ti o jẹ pataki fun dimole-fifuye deede;
3.No hydrogen embrittlement- ko si acid pickling tabi electrolytic lọwọlọwọ lowo, ki onipò 10.9 ati 12.9 le ti wa ni ti a bo lailewu;
4.Thread konge- awọn tinrin, lile fiimu se itoju o tẹle geometry, ki flange boluti si tun ṣiṣe awọn larọwọto sinu tapped ihò ati mate pẹlu boṣewa flange eso;
5.Friction aitasera- pẹlu awọn topcoats lubricant ti a ṣepọ, Awọn boluti flange Dacromet ṣe aṣeyọri awọn ifosiwewe nut iduroṣinṣin (K ≈ 0.12-0.16), pataki fun awọn laini apejọ iṣakoso iyipo.
4. Iṣẹ ati Awọn anfani Mechanical
Ti nso agbegbe ati dada titẹ
Awọn anfani asọye ti apẹrẹ flange jẹ pinpin fifuye. Tabili ti o wa ni isalẹ ṣe afiwe boluti hex boṣewa M10 kan, boluti hex kan pẹlu ifoso lọtọ, ati boluti flange nla M10 ni fifuye dimole 30 kN kanna.
| Bolt iṣeto ni | Ti nso OD (isunmọ.) | Agbègbè tí a ń gbé (mm²) | Iwọn oju ni 30 kN (N/mm²) |
| Hex boluti DIN 933, ko si ifoso | 14.5 mm (oju ifoso) | ≈ 78 | ≈ 385 |
| Hex boluti + alapin ifoso DIN 125 | 20 mm | ≈ 166 | ≈ 181 |
| Hex flange boluti DIN 6921 | 21,5 mm | ≈ 208 | ≈ 144 |
Table 1. Ti nso agbegbe ati dada titẹ lafiwe (M10 apẹẹrẹ, aṣoju iye).
Ṣe nọmba 2. Iwọn titẹ oju isalẹ tumọ si ifisinu diẹ si asọ tabi awọn ipele ti o ya ati isẹpo lile lori akoko.
Iwọn titẹ oju isalẹ dinku ifisinu (brinelling) sinu aluminiomu tabi awọn ipele ti o ya, jẹ ki isẹpo dimole duro ni akoko pupọ, ati dinku eewu ti ori rì sinu awọn ohun elo rirọ. Ni afikun, ominira ifa-gbigbọn igbeyewo (Junker igbeyewo, DIN 65151) àìyẹsẹ fihan wipe serrated flange boluti idaduro substantially diẹ dimole fifuye ju itele hex boluti ti kanna ite, nitori awọn serrations tii ni wiwo ti nso ati awọn anfani flange koju ori yiyi.
