Hexagon Flange Bolts e nang le Coating ea Dacromet: Geometry, Ts'ebetso, Ts'ebetso le Tataiso ea Kopano

2026-10-26

1. Selelekela

Geometry, Ts'ebetso, Ts'ebetso le Tataiso ea Kopano (1)

Li-flange bolts - liboutu tsa hlooho tsa hexagon tse nang le flange e kopaneng (sefahleho sa washer) se hahelletsoeng hloohong - e se e le eona khetho ea khetho ea ho etsa likoloi, ho kopanya metjhini le kaho ea lipeipi. Ka ho kopanya boutu le washer hore e be karolo e le 'ngoe, flange bolt e nolofatsa kopano, e aba moroalo oa ho koala holim'a sebaka se seholo sa ho jara, le ho ntlafatsa ho hanyetsa ho itokolla tlas'a vibrate.

Leha ho le joalo, libakeng tsa litšebeletso tse senyang, melemo ea moralo oa flange e ka fumanoa feela haeba seaparo se sireletsang bolt se phela hafeela lenonyeletso ka boeona. Dacromet (zinc-aluminium flake) ho roala ho hlahile e le mokhoa o ratoang oa ho sireletsa li-corrosion bakeng sa liboutu tsa flange tse matla, tse fanang ka khanyetso ea spray ea letsoai ka makhetlo a 'maloa ho feta electro-galvanizing ka karoloana ea botenya ba hot-dip galvanizing - le ntle le kotsi leha e le efe ea hydrogen embrittlement.

Sengoliloeng sena se hlalosa geometry le litekanyetso tsa hex flange bolts, se hlalosa mokhoa oa ho roala oa Dacromet joalo ka ha o sebelisoa ho li-flange bolts, o fana ka papiso ea ts'ebetso le litlhaloso tse tloaelehileng, mme o fana ka khetho e sebetsang le tataiso ea kopano.

2. Hex Flange Bolt ke Eng?

Hex flange bolt ke hexagon head bolt eo hlooho ea eona e nang le leqhubu la selika-likoe sebakeng se behang, ho latela ISO 4162 / DIN 6921 (metric) le litekanyetso tse bapisoang tsa li-inch-series. Ho na le lihlopha tse peli tse kholo:

Letoto la li-flange tse nyane- compact flange bophara bakeng sa libaka tse thata, tse tloaelehileng lienjineng tsa likoloi;
Letoto la li-flange tse kholo (tse pharaletseng).- hoo e ka bang 1.5 × bophara ba khoele, e sebelisoang moo ho nang le meroalo e phahameng kapa lisebelisoa tse bonolo tsa clamping (aluminium, polasetiki).

Li-bolt tse ngata tsa flange li boetse li na le serrations (meno a radial) lehlakoreng le ka tlase. Li-serrations li loma bokaholimo ba ho tlolelana ha liphoofolo, li eketsa ho hanyetsana le motsamao o monyane le ho ntlafatsa khanyetso ea bolt ho itokolla tlas'a ho thothomela - ntle le ho hloka mochini o koalang senotlolo.

Geometry, Ts'ebetso, Ts'ebetso le Tataiso ea Kopano (2)

3. Ke Hobane'ng ha Dacromet Coating bakeng sa Flange Bolts?

Ho roala ha Dacromet ke slurry e thehiloeng metsing ea zinki le li-aluminium flakes tse nang le li-passivator le li-binders tse sa tloaelehang. Likarolo li koahetsoe, li ohliloe ka centrifugally ho tlosa slurry e feteletseng, 'me li phekoloa ka 280-330 ° C metsotso e 20-40; Lipotoloho tse peli tsa dip-spin hangata li hlahisa filimi ea 6-10 μm. Li-bolts tsa flange li loketse haholo ts'ebetso ea dip-spin:

1. Phatlalatso e felletseng- ho roala ho phalla ka har'a fillet ea flange-to-shank le li-grooves tsa serration, libaka tseo electroplating e atisang ho siea li-deposit tse tšesaane kapa tse sa tloaelehang;

2.Uniform botenya- ho bilika ha centrifugal ho fana ka lifilimi esita le sefahlehong se bataletseng, ho boloka bokaholimo bo ts'oanang bo bohlokoa bakeng sa ho nepahala ha moroalo;

3.Ha ho na hydrogen embrittlement- ha ho na acid e pickling kapa electrolytic current e amehang, kahoo limaraka tsa 10.9 le 12.9 li ka koaheloa ka mokhoa o sireletsehileng;

4.Tsela e nepahetseng- filimi e tšesaane, e thata e boloka li-geometry tsa khoele, kahoo li-bolts tsa flange li ntse li matha ka bolokolohi ka har'a likoti tse phunyeletsoeng 'me li kopane le linate tse tloaelehileng tsa flange;

5.Ho ferekana ho hong- ka li-topcoats tse kopantsoeng tsa lubricant, li-bolts tsa Dacromet flange li finyella lintlha tse tsitsitseng tsa linate (K ≈ 0.12-0.16), tse hlokahalang bakeng sa melapo ea kopano e laoloang ke torque.

4. Ts'ebetso le Melemo ea Mechini

Sebaka sa ho jara le khatello ea holim'a metsi

Molemo o hlalosang oa moralo oa flange ke kabo ea mojaro. Tafole e ka tlase e bapisa bolt e tloaelehileng ea M10 ea hex, bolt ea hex e nang le washer e arohaneng, le boutu e kholo ea M10 ka mojaro o tšoanang oa 30 kN.

Tlhophiso ea bolt	Ho jara OD (hoo e ka bang.)	Sebaka sa ho beha (mm²)	Khatello ea sefahleho ho 30 kN (N/mm²)
Hex bolt DIN 933, ha ho na washer	14.5 mm (sefahleho sa washer)	≈ 78	≈ 385
Hex bolt + washer e bataletseng DIN 125	20 limilimithara	≈ 166	≈ 181
Hex flange bolt DIN 6921	21.5 limilimithara	≈ 208	≈ 144

Letlapa la 1. Sebaka sa ho jara le papiso ea khatello ea holim'a metsi (mohlala oa M10, litekanyetso tse tloaelehileng).

Setšoantšo sa 2. Khatello e tlaase ea bokaholimo e bolela ho fokotseha ho fokolang libakeng tse bonolo kapa tse pentiloeng le motsoako o thata ka mor'a nako.

Khatello e ka tlaase e fokotsa ho kenngoa (brinelling) ka har'a aluminiamo kapa libaka tse pentiloeng, ho boloka lenonyeletso le tlatsitsoeng le tiile ha nako e ntse e ea, le ho fokotsa kotsi ea hore hlooho e tebelle linthong tse bonolo. Ntle le moo, tlhahlobo e ikemetseng ea transverse-vibration (teko ea Junker, DIN 65151) e lula e bonts'a hore liboutu tsa serrated flange li boloka boima bo bongata ho feta liboutu tsa hex tsa sehlopha se le seng, hobane li-serrations li notlela sehokelo mme flange e pharaletseng e hanana le ho potoloha ha hlooho.

E fetileng E latelang.

Litaba tsa morao-rao