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Nga Tiwiri Upoko Puawai Whakakikoruatia a Dacromet
2026-11-03
1. Kupu Whakataki
Ko nga makawe potae mahunga, kua whakatauhia ki roto ISO 4762 / DIN 912 - Ko nga tutaki e pai ana ki nga waahi katoa e huihuia ana nga kawenga awhi nui, nga upoko kiato, me te mana taipana tika. Na te mea kei te hangaia i roto i nga karaehe rawa 8.8, 10.9 me otira 12.9, he nui te paheketanga o te kaha tuku o enei raka, a na taua kaha ano ka tino whakaraerae hauwai ebrittlement, pakaruhanga waikura ahotea, me te waikura i timata i te upoko awhi me nga pakitara turanga hex.
Dacromet paninga - te kore-electrolytic tawerewere konutea-konumohe pūnaha tautuhi e ISO 10683 a ASTM F1136 — te whakatika i enei ngoikoretanga. I roto i te kiriata angiangi 8–12 μm ka tukuna e ia te 720 ki te 1,000 haora o te rehu tote ki te tuatahi. waikura whero (ASTM B117 NSS), karekau he morearea ki te hauwai i te wa e tukatuka ana, me te pupuri i te ahuahanga turanga hex tika me te 6g miro kātakí e whakawhirinaki ana ki runga i nga tiwiri potae mahunga turanga.
2. Bolt Geometry and Design Features
Ko te uwhi potae mahunga he raka tino kaha me te upoko porotakaroa me te puku turanga hexagone o roto:
- Mahunga porotakarome a kua whakakakahu mata porohita; te diameter o te mahunga dk ≈ 1.5 × d - tata ki te 30–40% te iti ake i te hexagono te rahi o te mahunga o te upoko, e taea ai te hangai i nga tauira raka tata;
- Te upoko-ki-te-tangata, te rohe whakawhiti rohirohi-arohaehae kei te teitei te kukū o te ahotea;
- Miro katoa, miro wahanga ranei(smooth shank) styles; ka tuuhia te papa kutikuti ki roto i te hiu kore miro mo te kaha kutikuti;
- Nga rereke tohu: papa (chamfered) ira paerewa; tohu kuria tohu koeko mo te waahi me nga mahi raka.
Ka whakatauritea ki nga pou hex, ka nui ake te whakaputa a SHCS utaina mua mo taua taipana he mihi ki te puku turanga pai, a ka whakauruhia ki nga taviri hex, wrenches torque, taraiwa hex powered ranei - ka hangaia hei raka paerewa i roto i nga taputapu miihini, i nga miihini werohanga, i nga manifold hydraulic, i nga jigs me nga taputapu, me nga robotics.
3. Te Whakataurite Mahi Waikura
| Te paninga ki te akomanga 8.8–12.9 SHCS | Te matotoru | Rehu tote ki te waikura whero (ASTM B117) | Te mate o te hauwai | Notes |
| Te waikura pango (pango), kua hinu | <1 μm | < 24 haora | Karekau | Paku anake; ka horoi te hinu |
| Zinc phosphate + hinu | 3–5 μm | ≈ 48–72 h | Karekau | Ko te mutunga "pango" noa, he iti te ora |
| Zn12 Hiko-piauau, Cr(VI)-kore | 12 μm | ≈ 192 h | Teitei (12.9 kaore i te taunakitia) | Ko te turanga me nga miro kua whakakikoruatia |
| Zinc-nickel alloy electro-plate | 8–12 μm | ≈ 480–720 h | Whakaōrite | Utu teitei ake; ka hiahia i muri i te tunu |
| Dacromet DAC 320 (Wiki 2) | 8 μm | ≈ 720 haora | Tata kore | Hiriwa hina |
| Dacromet DAC 500 / pango | 10–12 μm | ≈ 1,000 h | Tata kore | Ko te mutunga pango ka rite ki nga raupapa pango |
6. Paerewa me te Awhe Hua Tikanga
Paerewa matua: ISO 4762 / DIN 912 (tuupapa mahunga potae tīwiri), ISO 898-1 (nga taonga miihini), ISO 10683:2018 (nga paninga tawerewere konutea kore-electrolytic), ASTM F1136, ASTM B117, ISO 4042 (te hikohiko me te arahi HE), DIN 267-28 a GB/T 70.1 / GB/T 5267.3.
| Tawhā | Awhe noa |
| Diamita | M3 – M42 (No.4 – 1-1/2") |
| Te roa | 6 – 300 mm, miro katoa, miro wahanga ranei |
| Te akomanga rawa | 8.8 / 10.9 / 12.9 |
| Te ahua o te upoko | Paerewa (ISO 4762), upoko iti (DIN 6912), upoko knurled |
| Tohu | Paetahi / tohu kuri / tohu koeko |
| paninga | DAC 320 / DAC 400 / DAC 500; hiriwa hina, pango ranei; Cr(VI)-kore |
| Miro kātakí | 6g, ka pania nga miro me te kore e paopao ano |
7. Nga Tono me te Aratohu Whiriwhiringa
1.Match paninga ki te kaha: mo te karaehe 10.9 me te 12.9 raka, tohe ki te tawerewere konutea kore-electrolytic (Dacromet / Geomet) ki te whakakore i te hauwai embrittlement;
2.Whakakapia te waikura pango ma te mohio: whakawhāitihia te Dacromet pango ina hiahia nga kaihoko ki te ahua pango me te tiaki waikura tuturu;
3.Verify te karaehe paningana nga haora NSS (DAC 320 ≈ 720 h; DAC 500 ≈ 1,000 h) me te tono i te ripoata whakamatautau a te kaihanga whakakikorua;
4.Whakaū Cr(VI)-kore haere noa(trivalent chromium) mo te hanganga ture RoHS / ELV;
5.Tirohia nga raraunga waku: whiwhi i te tauwehe nati me te purongo whakarea-o-waku mo te huihuinga e whakahaeretia ana e te taipana;
6.Whakaotia te punaha: whakamahia nga nati kua pania, nga kaihoroi, me nga whakaurunga paopao o te pumanawa hototahi hei karo i nga huinga whakamau whakauru.
8. Whakamutunga
Ka whakakotahihia e te Dacromet-cocket socket head screws nga mana miihini o nga raka tino kaha - he upoko porotakaroa kiato, he pai te puku hex, he kaha ki te uta i mua - me te punaha whakakikorua i hangaia mo o raatau ngoikoretanga: kaore he hauwai i runga i te rino 12.9, ka kapi ki te turanga me nga waahi kowhatu, te waikura me te pakaru o te waahi whero. huihuinga. Ka tika, ka tukuna he 720-1,000 haora rehu tote i roto i te kiriata 8-12 μm, ka kawe mai i te ahua pouri, matte o nga raka pango ki roto i te ratonga tino waikura.
