Dacromet-Coated Hexagon Socket Countersunk Head Bolts

2026-11-02

Dacromet mai rufi hexagon soket countersunk head bolt yana haɗuwa da kai mai dacewa mai dacewa tare da murfin flake na zinc-aluminum wanda ke ba da 720-1,000 sa'o'i na juriya na gishiri - sau da yawa fiye da na al'ada-plated zinc bolts. Wannan labarin yana bayyana ma'aunin juzu'i, tsarin suturar Dacromet, tsarin hana lalata, da kuma yadda yake kwatanta da sauran jiyya na tabbatar da tsatsa don sukurori da kusoshi.

1. Gabatarwa: Me yasa Kariyar Lalacewa ke da mahimmanci ga Bolts da Screws

Fasteners - bolts, screws, goro, da washers - su ne mafi lalacewa-lalacewa a cikin kowane haɗin gwiwa da aka kulle. Tsatsa ta yi asarar kayan da aka riga aka yi, ta kama a cikin ramin da aka zare ta, kuma a ƙarshe tana yin lahani ga daidaiton tsarin taron duka. A cikin mahalli na ruwa, gadoji na babbar hanya, tsarin hawan hasken rana, da injuna na waje, skru na yau da kullun na tutiya na iya nuna tsatsa cikin makonni da jajayen tsatsa cikin watanni.

2. Samfur Geometry: Hexagon Socket Countersunk Head Bolt

Girman Zaren	Diamita Shugaban (dk)	Tsawon kai (k)	Hex Socket (s)	Ƙarfin Ƙarfin Ƙarfi	Tsawon Tsawon Gida
M5 × 0.8	10.0 mm	2.8 mm	4 mm	8.8 / 10.9	10-60 mm
M6 × 1.0	11.4 mm	3.3 mm	5 mm ku	8.8 / 10.9	12-80 mm
M8 × 1.25	15.0 mm	4.4 mm	6 mm ku	8.8 / 10.9	16-100 mm
M10 × 1.5	18.5 mm	5.4 mm	8 mm ku	8.8 / 10.9	20-120 mm
M12 × 1.75	21.5 mm	6.5 mm	10 mm	8.8 / 10.9	25-150 mm

Babban fa'idodin geometry na wannan nau'in dunƙule:

Dacromet-Coated Hexagon Socket Countersunk Head Bolts

Ruwan ruwa- kan countersunk ba ya fitowa, yana kawar da abubuwan da ba a so ba kuma yana barin sassan mating su zauna a saman.
Babban karfin juyi- soket ɗin hexagon yana ɗaukar fuskoki shida na lamba, yana watsa 30-50% ƙarin juzu'i fiye da ramin rami ko Phillips tuki kafin cirewa.
Haɗin kai- Zaren inji mai cikakken tsari (ko zaren bugun kai don aikace-aikacen takarda-karfe) yana ba da ƙarfi mai ƙarfi axial clamping na bolted haɗin gwiwa.

3. Rufin Dacromet: Yadda yake Aiki

Dacromet sunan kasuwanci ne wanda ya zama jigon masana'antu na gabaɗaya don zinc-aluminum flake coatings ana shafa ta hanyar dip-spin ko feshi kuma a warke a kusan 300 ° C. Ba kamar electroplating ba, tsarin ba shi da wutar lantarki, don haka rufin ba ya gabatar da wani nau'i na hydrogen - wani muhimmin mahimmanci na tsaro don ƙarfin ƙarfin ƙarfin 10.9 da sama.

Rufin shine matrix na azurfa-launin toka na zinc da flakes na aluminum (yawanci 0.1-0.5 µm lokacin farin ciki, jimlar 15-20 µm) wanda aka haɗa ta hanyar ɗauren fili na chromium inorganic. Na'urar rigakafin lalata ta sau uku ne:

4. Ayyukan Anti-Corrosion: Bayanan Fasa Gishiri

Gwajin gwaji don juriya mai tsatsa shine gwajin gishiri mai tsaka tsaki (NSS) ta ISO 9227 / ASTM B117. Tebur na 3 yana kwatanta sukulan da aka rufa da Dacromet tare da mafi yawan madadin jiyya na saman.

Tebur 3 - Kwatancen juriya na lalata (gwajin NSS, sa'o'i zuwa tsatsa na farko)

Maganin Sama	Yawan Kauri	Farin Tsatsa	Jan Tsatsa	Hatsarin Rushewar Hydrogen	Fihirisar Farashin
Share zinc plating (Zn)	5-8 m	24-96 h	150-300 h	Matsakaici	1.0
Rawaya zinc plating (Zn-Cr)	5-8 m	96-200 h	300-500 h	Matsakaici	1.2
Hot-tsoma galvanizing (HDG)	50-100 m	—	1,000-2,000 h	Ƙananan	1.5
Dacromet (1 gashi)	5-8 m	480-720 h	720-1,000 h	Babu	1.8
Dacromet (2-3 riguna)	10-24 m	1,000+ h	1,500-2,500 h	Babu	2.2
Dacromet + babban hatimi	10-24 m	1,200+ h	2,000-3,000 h	Babu	2.5

5. Kammalawa

Dacromet mai rufi hexagon soket countersunk head bolt yana magance manyan matsalolin biyu mafi tsufa a cikin ɗaurin zaren - tsatsa da haɓaka - a cikin bangare ɗaya. Geometry na countersunk yana ba da haɗin gwiwa mai tsabta, mai tsabta, ba tare da ɓata lokaci tare da motar hexagon mai ƙarfi mai ƙarfi ba, yayin da murfin flake na zinc-aluminum yana ba da kariya ta hadaya da kariya ta kariya ta tsawon sa'o'i 1,000 ko fiye a gwajin fesa gishiri, ba tare da haɓakar hydrogen ba. Ga injiniyoyi da masu siye waɗanda ke ƙayyadaddun screws da bolts don waje, ruwa, ko muhallin sufuri, wannan aji mai ɗaukar hoto yana ba da ɗayan mafi kyawun ƙimar kariyar lalata-zuwa farashi da ake samu a fasahar bolting na zamani.

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