Dacromet Coated Flange Bolts-Iyo Yakakwana Tekinoroji Yekutungamira yeKugadzira, Kupfekedza Tekinoroji, uye Mashandisirwo eIndasitiri.

2026-08-12

Mufananidzo 1. Dacromet coated hex flange mabhoti - sirivheri-grey metallic kupera

1. Nhanganyaya

Mabhaudhi eFlange anomiririra chikamu chakakosha chezvisungo zveindasitiri, kusanganisa mashandiro ebhaudhi yakajairwa neyakasanganiswa washer-yakafanana flange pasi pemusoro webhaudhi. Kana yapetwa neDacromet coating tekinoroji, izvi zvinosungirira zvinowana chiyero chakasiyana chesimba remagetsi uye kusagadzikana kwekuora, zvichiita kuti zvive zvakakosha munzvimbo dzinodiwa dzakadai sekugadzira mota, kuvaka, mainjiniya emugungwa, uye michina inorema.

Ichi chinyorwa chinopa ongororo yakadzama yeDacromet yakavharwa mabhaudhi eflange kubva kune maviri anowirirana maonero: dhizaini yekugadzira uye mechanical zvimiro zveflange mabhoti, uye yepamusoro yepamusoro yekurapa tekinoroji inozivikanwa seDacromet. Pamwe chete, zvinhu izvi zvinotsanangura mhinduro yekusimbisa inosangana nezvinodiwa zvemazuva ano einjiniya maapplication.

2. Kunzwisisa Flange Bolts

A flange bhaudhi ishinda ine shinda ine tambo yakakura yakabatanidzwa yakananga pasi pemusoro une hexagonal. Iyi flange inogovera iyo clamping mutoro pamusoro penzvimbo yakakura, ichibvisa kudikanwa kwewasher yakaparadzana uye kuderedza nguva yegungano. Iyo yakabatanidzwa flange inopawo yakawedzera kuramba kusunungura pasi pekudengenyeka, iyo yakakosha kufunga munzvimbo dzine simba remutoro.

Flange mabhoti anogadzirwa mune ese ari maviri serrated uye asina-serrated akasiyana. Serrated flange mabhaudhi ane mazino ari nechepasi peflange anobata nzvimbo yekusangana, achipa mashandiro epamusoro-soro ekurwisa kudengenyeka. Non-serrated versions inopa yakatsetseka inobereka nzvimbo, yakakodzera maapplication apo kukuvadzwa kwepamusoro kunofanirwa kudzikiswa.

Tafura 1. Mafungiro Anowanikwa eDacromet Flange Bolts

Tsanangudzo	Metric Range	Standard	Material
Thread Diameter	M6 - M24	ISO 4162 / DIN 6921	Carbon Steel (SCM435)
Property Kirasi	8.8 / 10.9 / 12.9	ISO 898-1	Alloy Steel
Flange Diameter	13 - 42 mm	ISO 4162	Carbon Steel
Surface Coating	Dacromet (Zn-Al)	ISO 10683	Zinc-Aluminium Flake
Munyu Spray Resistance	1,000 - 3,000 maawa	ASTM B117	Hapana Red Rust
Operating Temp.	-40C kusvika 300C	Industrial Std.	Heat Resistant

3.Vadivelu Comedy Dacromet Coating Technology

Dacromet inyanzvi yemvura-yakavakirwa, isiri-electrolytic pamusoro pekugadzika tekinoroji yakatanga kugadziridzwa kugadzirisa zvipimo zveyakajairwa galvanizing. Iyo yekupfeka ine zinc flakes, aluminium flakes, uye chromate makomisheni akaparadzirwa mune aqueous binder system. Kana yaiswa nekuporeswa, maflakes aya anoita dense, layered barrier iyo inopa yakasarudzika corrosion dziviriro pasina njodzi yehydrogen embrittlement.

Mufananidzo 2. Muchinjikwa-chikamu dhayagiramu yeDacromet yekupfekedza machira pane substrate yesimbi

Iyo Dacromet coating process inosiyana zvakanyanya kubva kune electroplating. Panzvimbo pekuisa simbi kuburikidza ne electrolysis, Dacromet inoshandisa dip-spin kana spray application inoteverwa nepamusoro-tembiricha yekurapa. Panguva yekurapa panosvika 280-320 madhigirii celsius, zingi nealuminium flakes zvinonyura pamwe chete uye zvinosungirirwa kune substrate yesimbi kuburikidza nechromate-mediated cross-linking mechanism. Iyo inokonzeresa yekuputira yakatetepa (kazhinji 6-10 microns), yunifomu, uye yakanyanya kuomerera.

3.1 Coating process Overview

Iyo Dacromet application process inosanganisira akati wandei akadzorwa matanho, imwe neimwe ichipa kune yekupedzisira kuita maitiro ejasi:

Tafura 2. Dacromet Coating Process Matanho

Danho	Process	Tsanangudzo
1	Pre-kurapwa	Degreasing, kupfura kuputika, uye ultrasonic kuchenesa kubvisa mafuta, chiyero, uye zvinosvibisa kubva pabhaudhi.
2	Kunyura/Kupfapfaidza	Mabhaudhi anonyudzwa mukati kana kupfapfaidzwa neDacromet water-based coating solution ine zinc uye aluminium flakes.
3	Spin Drying	Centrifugal spinning inobvisa yakawandisa coating kuti ive yunifomu ukobvu (6-10 microns).
4	Kurapa	Yakabikwa pa 280-320C kwemaminetsi makumi maviri-30, kubatanidza flakes kune substrate kuburikidza nekupisa.
5	Second Coat	Yechipiri dip-and-cure denderedzwa inoisirwa kuchengetedzwa kwakawedzera ngura (inosarudzika kune inorema machira).
6	Kurapa Kwekupedzisira	Yekupedzisira kubika pa 300C inova nechokwadi chekuzara-kubatanidza uye kunamatira kwakanyanya kwejasi.

Iyo yese maitiro anowanzo kupedzwa mumaviri ekubatisa matenderedzwa kuti awane yainoda coating ukobvu uye corrosion kuramba. Kutenderera kwega kwega kunosanganisira kushandisa, spin-kuomesa, uye kurapa, nechigadzirwa chekupedzisira chinoratidza chimiro chesirivha-grey.

4.Advantages yeDacromet Coating

Dacromet coating inopa akati wandei akasiyana mabhenefiti pane akajairwa epamusoro kurapwa, zvichiita kuti ive sarudzo inosarudzika yepamusoro-inoshanda fastener application:

Superior Corrosion Resistance: Dacromet-coated fasteners inogona kumira 1,000 kusvika 3,000 maawa emunyu wekupfapfaidza yemunyu (ASTM B117) isati yaonekwa yehutu dzvuku, zvakanyanya kupfuura zvechinyakare zinc electroplating (300-700 maawa).

Hapana Hydrogen Embrittlement: Kusiyana ne electroplating, iyo Dacromet process haisanganisi electrolysis, kubvisa njodzi yehydrogen embrittlement. Izvi zvinonyanya kukosha kune yakakwirira-simba mabhoti (Kirasi 10.9 uye 12.9) inoshandiswa mukuchengetedza-yakakosha maapplication.

Yakanakisa Heat Resistance: Iyo inorganic hunhu hweDacromet coating inoibvumira kuchengetedza zvidziviriro zvayo patembiricha inosvika 300 degrees Celsius, ichipfuura zvakanyanya miganhu yekupisa ye organic coating uye yakajairwa zinc plating.

Uniform Coating: Iyo dip-spin application nzira inogonesa kuenderana ukobvu kunyangwe pane yakaoma geometries, kusanganisira nzvimbo dzakarukwa uye nzvimbo dzemukati uko electroplating inogona kuburitsa isina kuenzana dhipoziti.

Kutevedzwa Kwezvakatipoteredza: Mazuva ano Dacromet magadzirirwo haana hexavalent chromium (Cr6+), achitevedzera RoHS, ELV, uye REACH mirairo, ichiita kuti ive yakakodzera kune mota uye zvemagetsi application.

5. Industrial Applications

Dacromet yakavharwa flange mabhaudhi inowana kushandiswa kwakakura mumaindasitiri akawanda uko kutendeseka kwechimiro uye kuchengetedzwa kwenguva refu kwecorrosion kwakakosha:

Indasitiri yeMotokari: Inoshandiswa mumakasikisi magungano, mamongi einjini, mabhureki masisitimu, uye zvinhu zvekumisikidza uko kusungirira kwesimba-kwakasanganiswa nemunyu wekupfapfaidza kuramba kwakakosha. Makuru maOEM anotsanangudza Dacromet-yakavharidzirwa zvisungo zvepasi pevhu zvikumbiro zvakafumurwa mumugwagwa munyu uye hunyoro.

Kuvaka uye Infrastructure: Inoshandirwa musimbi zvimiro zvekubatanidza, zvikamu zvebhiriji, uye zvekunze zvekushandisa uko iyo yekuzvigovera yega flange dhizaini inoderedza nguva yekuisa uye iyo Dacromet coating inopa makumi emakore ekuchengetedza-yemahara sevhisi.

Marine neOffshore: Iyo yakasarudzika munyu yekupfapfaidza kuramba yeDacromet coating (kusvika kumaawa 3,000) inoita kuti mabhaudhi aya ave akanaka pakuvaka ngarava, mapuratifomu ekumahombekombe, uye dock hardware yakazarurwa kune inoenderera nharaunda yemvura yemunyu.

Mhepo Simba: Inoshandiswa mu turbine tower flanges uye nacelle maassemblies uko yakakwirira-simba bolting inofanirwa kutsungirira kurodha kwemacyclic uye kuratidzwa kwezvakatipoteredza pamusoro pemakore makumi maviri + ehupenyu hwesevhisi.

Railway uye Inorema Machina: Inoshandiswa mu track yekusimbisa masisitimu, zvinhu zvelocomotive, uye michina yemugodhi uko vibration kuramba uye kudzivirira ngura zvinodikanwa panguva imwe chete.

Hauna. Next.