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Dacromet Flange Bolts
2026-07-23
Dacromet Flange Bolts
Anti-Corrosion Flange Fasteners karo Seng-Aluminium Flake Coating
Baut flange Dacromet nggabungake desain kepala flange sing nyebar beban karo lapisan flake seng-aluminium Dacromet. Flange integral ngganti mesin cuci sing kapisah, dene lapisan Dacromet nyedhiyakake 500-1,200 jam tahan semprotan uyah tanpa embrittlement hidrogen - becik kanggo aplikasi otomotif, konstruksi, lan laut.
Bagean 1 - Flange Bolt
Bolt flange yaiku bolt sirah hex kanthi flange kaya mesin cuci terpadu ing dhasar sirah. Flange nyebarake beban clamping ing wilayah sing luwih akeh, nyuda tekanan permukaan lan nyegah karusakan ing bahan sing disambungake. Iki ngilangi kabutuhan mesin cuci sing kapisah, nyederhanakake perakitan.
Fitur Utama
- Distribusi beban: Flange nyebar kekuwatan clamping, nyuda tekanan bantalan nganti 50% dibandhingake baut hex standar.
- Anti-loosening: Opsi flange bergerigi nyedhiyakake resistensi geter sing dibangun tanpa mesin cuci ngunci.
- Standar: DIN 6921 / ISO 4162 / GB / T 5787; M6–M20; Kelas 8.8 lan 10.9 saben ISO 898-1.
- Bahan: Baja karbon (Grade 8.8) utawa baja paduan rendah (Grade 10.9), dipateni lan tempered.
Part 2 - Coating Dacromet
Dacromet minangka lapisan non-elektrolitik adhedhasar banyu saka serpihan seng lan aluminium sing tumpang tindih sing diikat karo senyawa kromium. Ditrapake liwat siklus dip-spin-cure ing 280-300 ° C, menehi perlindungan karat telung lapisan tanpa embrittlement hidrogen.
Mekanisme pangayoman
- Proteksi kurban: Seng flakes corrode preferentially kanggo nglindhungi baja, sanajan lapisan wis scratched.
- alangan fisik: Flakes sing tumpang tindih ngalangi kelembapan, oksigen, lan ion korosif.
- Pasif kimia: Senyawa kromium nyepetake pembubaran seng lan ngobati goresan mikro.
Kaluwihan Key
- Ora ana embrittlement hidrogen: Proses non-elektrolitik - aman kanggo baut kekuatan dhuwur Grade 8.8-10.9.
- Ketahanan korosi unggul: 500–1,200 jam semprotan uyah (ISO 9227), 5–10x luwih apik tinimbang seng plating.
- Tipis & seragam: 4–10 µm njaga kecocokan benang lan geometri flange. Ora perlu nutul maneh.
- Tahan panas & ramah lingkungan: Tahan 250 ° C; Bebas Cr⁶⁺, tundhuk RoHS/REACH.
Coating Comparison
| Properti | Dacromet | Seng Plating | Hot-Dip Galv. |
| Semprotan uyah (jam) | 500 – 1.200 | 96 – 240 | 300 – 1.000 |
| Hidrogen Embrittlement | ora ana | Resiko (Gr. 10.9+) | ora ana |
| Ketebalan Coating | 4 – 10 µm | 5 – 25 µm | 45 – 85 µm |
| Benang Fit Dampak | Minimal | kurang | Wigati |
| Tahan panas | 250°C | 200°C | 250°C |
| Penampilan | Perak-abu-abu, matte | Biru-putih | Padhang / spangled |
Ringkesan
Dacromet flange bolts nawakake kombinasi optimal saka efficiency mechanical lan pangayoman karat. Flange integral nyebarake beban lan nyederhanakake perakitan, dene lapisan flake seng-aluminium Dacromet nyedhiyakake 500-1,200 jam tahan semprotan uyah tanpa embrittlement hidrogen. Pengikat iki akeh digunakake ing otomotif, konstruksi, energi angin, lan aplikasi laut ing ngendi clamping sing dipercaya lan daya tahan jangka panjang penting.
