Dacromet-Yashizweho Sock Umutwe Umutwe

2026-11-03

1. Intangiriro

Sock head cap screw, isanzwe muri ISO 4762 / DIN 912 - ni bolts yo guhitamo ahantu hose hejuru yimitwaro iremereye, imitwe yegeranye, hamwe nigenzura rya torque neza. Kuberako mubisanzwe bikozwe mubyiciro byumutungo 8.8, 10.9 na cyane 12.9, ibi byuma bikora ku ijanisha ryinshi ryimbaraga zabo, kandi izo mbaraga zimwe zituma bibasirwa cyane hydrogène, guhangayika, n'ingese yatangiriye kumutwe wuzuye hamwe nurukuta rwa hex.

Igikoresho cya Dacromet - kitari amashanyarazi zinc-aluminium Sisitemu yasobanuwe na ISO 10683 na ASTM F1136 - ikemura neza izo ntege nke. Muri firime ya 8-12 mm yoroheje itanga amasaha 720 kugeza 1.000 yumunyu utera umunyu kubanza ingese itukura (ASTM B17 6g kwihanganira insanganyamatsiko iyo sock head cap screws biterwa.

2. Bolt Geometrie nuburyo bwo gushushanya

Socket cap cap screw ni imbaraga zuzuye zifite umutwe wa silindrike hamwe na disiki yimbere ya hexagon imbere:

Umutwehamwe na yakubiswe ubuso buzengurutse; umutwe wa diametre dk ≈ 1.5 × d - hafi 30-40% ntoya kuruta umutambiko wa hexagon ufite ubunini bungana, ukemerera guhuza, gufunga hafi ya bolt;
Umutwe-kuri-shank kuzuza, umunaniro-ukomeye winzibacyuho aho guhangayikishwa cyane;
Urudodo rwuzuye cyangwa igice(shank yoroshye) imisusire; igice-cy-imigozi ishyira indege ikarishye muri shanki idasomwe kubushobozi bwo hejuru bwogosha;
Ingingo zitandukanye: igorofa (chamfered) ingingo isanzwe; imbwana ingingo ya cone kumwanya no gufunga ibikorwa.

Ugereranije na hex bolts, SHCS itanga hejuru preload kuri torque imwe dukesha disiki ya sock ikora neza, kandi bashyizwemo nurufunguzo rwa hex, imashini ya torque, cyangwa amashanyarazi ya hex - kubagira ibyuma bisanzwe mubikoresho byimashini, imashini itera inshinge, hydraulic manifolds, jigs nibikoresho, hamwe na robo.

3. Kugereranya imikorere ya ruswa

Kwambika icyiciro 8.8–12.9 SHCS	Umubyimba	Gutera umunyu ingese zitukura (ASTM B117)	Amazi ya hydrogène	Inyandiko
Okiside y'umukara (yirabura), amavuta	<1 mm	<24h	Nta na kimwe	Amavuta yo kwisiga gusa; amavuta yoza
Zinc fosifate + amavuta	3-5 mm	≈ 48–72 h	Nta na kimwe	Bisanzwe "umukara" kurangiza, ubuzima bugarukira
Amashanyarazi ya Zn12, Cr (VI) -ubuntu	12 mm	≈ 192 h	Hejuru (12.9 ntibisabwa)	Sock hamwe nudodo tworoshye
Zinc-nikel alloy electro-plaque	8-12 mm	≈ 480–720 h	Guciriritse	Igiciro kinini; ikeneye nyuma yo guteka
Dacromet DAC 320 (Icyiciro cya 2)	8 mm	20 720 h	Mubyukuri ntayo	Icyatsi kibisi
Dacromet DAC 500 / umukara	10-12 mm	≈ 1.000 h	Mubyukuri ntayo	Umukino wo kurangiza uhuza urukurikirane rwirabura

6. Ibipimo nibicuruzwa bisanzwe

Ibipimo by'ingenzi: ISO 4762 / DIN 912 (sock head cap screws), ISO 898-1 (ibikoresho bya mashini), ISO 10683: 2018 (impuzu zidafite amashanyarazi ya zinc flake), ASTM F1136, ASTM B117, ISO 4042 (amashanyarazi na HE kuyobora), DIN 267-28 na GB / T 70.1 / GB / T 5267.3.

Parameter	Urwego Rusange
Diameter	M3 - M42 (No.4 - 1-1 / 2 ")
Uburebure	6 - 300 mm, umugozi wuzuye cyangwa umugozi wigice
Icyiciro cy'umutungo	8.8 / 10.9 / 12.9
Imiterere yumutwe	Bisanzwe (ISO 4762), umutwe muto (DIN 6912), umutwe wuzuye
Ingingo	Ingingo ya Flat / imbwa / ingingo ya cone
Igipfukisho	DAC 320 / DAC 400 / DAC 500; ifeza imvi cyangwa umukara; Cr (VI) -ubuntu
Kwihanganira ingingo	6g, insinga zometseho utongeye gukanda

7. Gusaba no kuyobora ubuyobozi

1.Gereranya gutwikira imbaraga: ku cyiciro cya 10.9 na 12.9, shimangira kuri flake idafite amashanyarazi (Dacromet / Geomet) kugirango ikureho hydrogène;

2.Simbuza oxyde yumukara mubwenge: vuga umukara Dacromet mugihe abakiriya bashaka isura yijimye hamwe no kurinda ingese;

3.Kwemeza icyiciro cyo gutwikiran'amasaha ya NSS (DAC 320 ≈ 720 h; DAC 500 ≈ 1.000 h) hanyuma usabe raporo y'ibizamini by'abakora ibicuruzwa;

4.Kwemeza Cr (VI)-passivation yubusa(chromium trivalent) kugirango RoHS / ELV yubahirize;

5.Reba amakuru yo guterana amagambo: shakisha ibintu byintungamubiri na coefficient-ya-friction raporo yinteko igenzurwa na torque;

6.Kuzuza sisitemu.

8. Umwanzuro

Ibikoresho bya Dacromet bifatanyirijwe hamwe bihuza ibyiza byubukorikori bukomeye bwa rusange - intego ya silindrike yuzuye, imitwe ikora neza ya hex sock, ubushobozi bwimbere ya preload - hamwe na sisitemu yo gutwikisha ingero zintege nke zabo: nta hydrogène yinjizwamo ibyuma bya 12.9, gukwirakwiza mumashanyarazi hamwe no gutembera neza. Byerekanwe neza, batanga amasaha 720-1000 yo gutera umunyu muri firime ya 8-12 mm, kandi bakazana umwijima, matte wibara ryirabura muri serivise itangiza ruswa.

Ntugire. Ibikurikira.

Amakuru agezweho