Dacromet Flange Bolts: Sumo Yakazara kune Yepamusoro-Kuita Corrosion-Inodzivirira Fasteners.

2026-09-14

1. Nhanganyaya

Muinjiniya yemazuva ano uye kugadzira, kuvimbika kwemajoini akasungwa kwakakosha kune kuvimbika kwechimiro, chengetedzo, uye kushanda kwenguva refu. Zvisungo zvechinyakare zvinowanzotambura nekuora, kunyanya munzvimbo dzakaoma dzinosanganisira unyoro, munyu, makemikari, kana tembiricha yakakwira. Dacromet flange mabhoti anogadzirisa matambudziko aya nekubatanidza yakasarudzika zinc-aluminium flake coating pamwe nemakanika mabhenefiti emusoro weflange dhizaini.

A Dacromet flange bolt ndeyepamusoro-inoshanda fastener inobatanidza yakavakirwa-mukati washer-yakafanana flange pasi pemusoro ine isiri-electrolytic zinc-flake coating inozivikanwa seDacromet (kana zinc flake coating systems yakabva mairi). Musanganiswa uyu unoburitsa kusarudzika corrosion resistance, inopindirana clamping simba, uye kusununguka kubva kuhydrogen embrittlement-ichiita kuti inyanyokodzera kushandiswa kwesimba repamusoro-soro muzvikamu zvemotokari, zvekuvaka, zvemugungwa, zvesimba, nemaindasitiri.

2. Chii chinonzi Dacromet Coating?

Dacromet imvura-yakavakirwa, inorganic zinc-aluminium flake coating system yakatanga kugadzirwa muma1970s. Iyo ine zingi uye aluminium flakes yakamiswa muchromate (kana chromium-isina) binder. Iyo yekupfekedza inoiswa ne dip-spin, spray, kana kunyudza nzira uye yobva yaporeswa patembiricha yakakwira (kazhinji inotenderera 300 ° C), ichigadzira firimu rakatetepa, rakakora, rakawanda-layered inodzivirira.

Hunhu hwakakosha hwekupfeka zvinosanganisira:

Ukobvu hwefirimu: Kazhinji 4-12 μm (kazhinji 6-8 μm), iyo inochengetedza chaiyo tambo kushivirira.

Chipingamupinyi + kudzivirira kwechibairo: Kupindirana kwesimbi maflakes kunogadzira chipingamupinyi chemuviri nepo zinc ichipa galvanic (chibairo) dziviriro.

Hapana hydrogen embrittlement: Iyo isiri-electrolytic process inodzivirira acid pickling uye electrolysis, kubvisa njodzi yehydrogen-induced inononoka kuputsika mumasimbi akasimba.

Heat resistance: Yakagadzikana kusvika kunosvika 300°C inoenderera tembiricha yebasa.

Chitarisiko: Metallic sirivha-grey matte kupera.

Ziva kuti "Dacromet" izita rekutengesa zita; akafanana zinc-flake masisitimu (akadai seGeomet, isina chromium-isina) anoshandiswa zvakanyanya nhasi kusangana nemirairo yemazuva ano yezvakatipoteredza (RoHS, REACH, ELV).

3. Chii chinonzi Flange Bolts?

A flange bhaudhi (inonziwo flanged hex head bhaudhi kana furemu bhaudhi) inoratidzira yakakosha denderedzwa flange pasi pemusoro une hexagonal inoshanda seyakavakirwa-mukati washer. Iyi dhizaini inogovera iyo clamping mutoro pamusoro penzvimbo yakakura, inoderedza njodzi yekumisikidza mune yakabatanidzwa zvinhu, inonatsiridza kuramba kune vibration kusunungura, uye kazhinji inobvisa kudiwa kwewasher yakaparadzana.

Mhando dzakajairika dzinosanganisira:

Hex flange mabhoti (akawanda)

Serrated flange mabhaudhi (ane under-head serrations for anti-rotation)

Socket musoro kana mamwe akasiyana flange akasiyana

Kana yakasanganiswa neDacromet coating, aya mabhaudhi anopa ese epamusoro mekiniki kuita uye kusimba kwakanyanya kwezvakatipoteredza.

4. Kuenzanisa neCommon Coatings

Tafura inotevera inopfupisa yakajairika maitiro akasiyana:

Property	Dacromet	Electro-Zinc	Hot-Dip Galv.	Stainless
Kupfapfaidza munyu (maawa)	1,000–1,500+	100–300	500–1,000+	Inherent
Coating Ukobvu	4–12 μm	5–15 μm	40–100+ μm	N/A
H Embrittlement Ngozi	Hapana	Pamusoro (ku ≥10.9)	Low–Medium	Hapana
Max Service Temp.	~300°C	~100–120°C	~200°C	High
Thread Fit Impact	Minimal	Low	Chinokosha	Hapana

Ongorora: Kuita chaiko kunosiyana negiredhi rekupotera, ukobvu, topcoat, uye mamiriro ezvakatipoteredza. Chromium-isina zinc-flake masisitimu (semuenzaniso, Geomet) inopa kuchengetedzwa kwakafanana kwekuora uku ichisangana neyakaomarara miyero yezvakatipoteredza.

5. Nzvimbo Dzakakura dzekushandisa

Dacromet flange mabhoti anoshandiswa zvakanyanya muzvikamu zvechasi, masisitimu ekumisikidza, kukwirisa injini, mabhureki mabhureki, exhaust masisitimu, uye zvimiro zvemuviri. Ivo vanomira mumunyu wemumugwagwa, kuchovha bhasikoro, vibration, uye tembiricha yakakwira yepasi-hood uku ichipa yakavimbika clamp load.

Mumabhiriji, shongwe dzekutumira, zvivakwa zvesimbi, uye zvivakwa zvemahombekombe, aya mabhaudhi anopa dziviriro yenguva refu kubva mukuora kwemuchadenga uye kuderedza kuwanda kwekugadzirisa.

Offshore mhepo turbine nheyo, solar mounting system, kuvaka ngarava, uye chiteshi chezvikepe zvinobatsira kubva kune yakakwira munyu-spray kuramba uye kugona kupfeka yakaoma geometries zvakafanana.

Zvishandiso zvakafumurwa kune fetiraiza, makemikari, hunyoro, uye abrasion - semichina yekurima, pombi, mavharuvhu, uye michina yekugadzira - inowanzo tsanangura Dacromet-yakavharwa flange fasteners yehupenyu hwakareba hwesevhisi.

6. Magiredhi Akajairwa, Maitiro, uye Sarudzo Yekutungamira

Property makirasi: Dacromet flange mabhoti anowanikwa mumidziyo makirasi 4.8, 8.8, 10.9, uye 12.9 (metric), pamwe neGiredhi 5 uye Giredhi 8 (imperial). High-simba mamakisi (10.9 / 12.9) kunyanya kubatsirwa nekusavapo kwehydrogen embrittlement ngozi.

Dimensional zviyero: Mareferensi akajairwa anosanganisira ISO metric flange bolt zviyero, DIN, GB (Chinese), uye ASME/ANSI yemainch series.

Coating specifications: Kuita kunowanzo kutsanangurwa nehuremu hwekuputira hudiki (semuenzaniso, Giredhi A ≈ 24 g/m², Giredhi B ≈ 36 g/m²) uye zvinodiwa nemunyu-spray. Topcoat inogona kuwedzerwa kune yakagadziridzwa lubricity, ruvara, kana yekuwedzera barriers dziviriro.

Mazano ekusarudza: Matanidza iyo coating system nechikamu chekuora chenzvimbo (semuenzaniso, C3-C5 pa ISO 12944). Kune majoini akasimba-akasimba, simbisa torque-tension data neiyo chaiyo yekupfeka uye topcoat. Sarudza chromium-isina masisitimu kana kuteedzera kwezvakatipoteredza kuchidikanwa.

7. Kuiswa uye Kufunga Kunoshanda

Bata nehanya: Kunyangwe iyo yekupfekedza ine yakanaka adhesion, dzivirira zvakanyanya kukuvadzwa kwemichina panguva yekubata nekuisa.

Torque control: Shandisa friction coefficients inopiwa nemutengesi wekuputira. Lubricated Dacromet masisitimu anoburitsa anowirirana masimbi ekutakura pane asina kuomeswa zinc coatings.

Kuenderana: Dacromet inowanzoenderana neakawanda gasket uye yekuisa chisimbiso zvinhu uye inogona kupendi-pendi kana zvichidikanwa.

Kuongorora: Kuongororwa kwekuona kwekuenderera mberi kwekupfeka uye kuyedzwa kwekunamatira (pakutsanangurwa) kunofanirwa kuve chikamu chekutonga kwemhando.

8. Mhedziso

Dacromet flange mabhoti anomiririra yakakura, yakakwirira-inoshanda yekusimbisa mhinduro inobudirira kuyera yakasarudzika corrosion dziviriro, kuvimbika kwemuchina, uye dimensional chaiyo. Nekubvisa njodzi yehydrogen embrittlement uku uchiendesa munyu-spray kuita kwakakwirira kupfuura yakajairwa zinc plating, ivo vava sarudzo inosarudzika yekuda maapplication munzvimbo dzese dzemotokari, simba, kuvaka, uye maindasitiri.

Sezvo mirau yezvakatipoteredza ichiramba ichifambisa kutorwa kwechromium-isina zinc-flake masisitimu, tekinoroji inoramba ichishanduka ichichengeta zvayakanakira. Paunenge uchitsanangura zvigadziro zvenzvimbo dzinoodza kana kudziya kwepamusoro-kunyanya panodiwa magiredhi esimba repamusoro-Dacromet (kana kuti yakaenzana zinc-flake) mabhaudhi akafukidzwa eflange anofanirwa kutariswa zvakanyanya seyakagadziriswa uye inodhura mhinduro pamusoro pehupenyu hwebasa regungano.

Mainjiniya nevatengi vanokurudzirwa kuti vabvunze vatengesi vehuputi kuti vawane akadzama ehunyanzvi data mapepa, friction coefficients, uye munyu-spray bvunzo mishumo yakanangana neiyo yakasarudzwa system uye zvinodiwa zvekushandisa.

Hauna. Next.