IBanga le-8.8 leeBolt zeHex

2026-08-03

1. IBanga lesi-8.8 - iKlasi yokuFakisa okuPhakamileyo okuPhakamileyo

1.1 Ukucazululwa kwe 8.8 Ukuchongwa

Ukumakishwa "8.8" kukutyunjwa kweklasi yepropati echazwe yi-ISO 898-1, umgangatho wamazwe ngamazwe olawula iipropati zemishini ye-carbon steel kunye ne-alloy fasteners yensimbi. Inkqubo enamanani amabini ifaka iikhowudi ezimbini zeeparamitha zoomatshini:

● Idijithi yokuqala (8): Ibonisa isinye eshumini samandla okuzinza kwi-megapascals → 8 × 100 = 800 MPa ubuncinci bokuqina kwamandla.

● Idijithi yesibini (.8): Imele umlinganiselo wesivuno → 0.8 × 800 = 640 MPa ubuncinci bamandla esivuno.

Iziqhoboshi zeBanga lesi-8.8 zezona zibophelelo zolwakhiwo ezisetyenziswa ngokubanzi kwihlabathi liphela, ezigquma iibholiti ze-hex, izikrufu zehex cap, iibholithi zekhareji, iibholiti zeenqwelo, kunye nezikrufu ezithungwe ngokupheleleyo zokwakha intsimbi, iiassembly zemoto, kunye noomatshini ngokubanzi.

Umzobo 1. Iibholithi ze-hex zeBakala 8.8 ezinophawu lweklasi yepropathi

1.2 IiPropati zoomatshini

Iifasteners zeBanga lesi-8.8 zenziwa kwintsimbi yekhabhoni ephakathi kwaye ziphantsi kwe-quenching kunye ne- tempering (Q&T) ukufezekisa ukusebenza komatshini ofunekayo. Iipropati eziphambili ngokwe-ISO 898-1:

Ipropati	Ixabiso	Iyunithi
Ubuncinci bokuqina kokuqina (Rm)	800	MPa
Ubuncinci boBume beSivuno (ReL)	640	MPa
Ubuncinci bobude emva kokwaphuka	≥ 12	%
Ukuqina okungundoqo (HV)	250–310	HV
Q&T Ukuqina okuqhelekileyo (HRC)	22–32	HRC
Uluhlu lweDimitha yeBolt yeNominal	M5 – M39	mm

Itheyibhile 1. Iimpawu eziphambili zoomatshini zeBanga le-8.8 le-fasteners nge-ISO 898-1

1.3 Izixhobo ezicetyiswayo

Ukukhetha imathiriyeli ekrwada echanekileyo sisiseko sokuvelisa iziqhoboshi ezithembekileyo zeBakala 8.8. Ezi zintsimbi zilandelayo, zidityaniswe ne-Q&T eyiyo, zifezekisa ukusebenza okungaguqukiyo kwiBanga lesi-8.8:

● 35# I-Medium-Carbon Steel — Ifanelekile kwi-fasteners encinci ye-diameter (≤ M16). Ixabiso eliphantsi, ukuqina okwaneleyo emva kwe-Q&T.

● 45# iMedium-Carbon Steel — Olona khetho luthandwayo kwiBanga lesi-8.8 leebholithi zeheksi kunye neebholiti ze-stud. Ukuchaneka okuhle, iipropathi ezizinzileyo zoomatshini emva kwe-Q&T.

● I-40Cr Alloy Steel - Ekhethwayo kwiibholiti ezinkulu ze-diameter (M20 +). Ukongezwa kweChromium kuphucula ukuqina kunye nokuqina okufanayo kuwo wonke amacandelo anqamlezileyo.

1.4 Uthelekiso lweBanga

IBanga	I-Tensile (MPa)	Yield (MPa)	Izixhobo ezicetyiswayo
4.6	400	240	Intsimbi yekhabhoni ephantsi, engaphathwa ngobushushu
4.8	420	340	Intsimbi yekhabhoni ephantsi, ebandayo
8.8	800	640	35# / 45# Intsimbi yeCarbon, i-40Cr iAlloy Steel; Q&T
10.9	1,040	940	40Cr, 35CrMo, 42CrMo, SCM435; Q&T
12.9	1,220	1,100	42CrMo4 / SCM440, 35CrMoV; Q&T 39–44 HRC

Itheyibhile 2. Iiklasi eziqhelekileyo zepropathi ye-fastener kunye nezixhobo ezicetyiswayo

2. Iibholiti ze-Hex-Esona siQinisekiso siFaneka

2.1 Yintoni i-Hex Bolt?

Ibholithi yehex (hexagonal head bolt) sisibophelelo esinemisonto enentloko emacala amathandathu, eyilelwe ukuba ifakwe kwimingxuma kwiindawo ezidityanisiweyo kwaye ikhuselwe nge nut yokukhwelana. Ijiyometri ene-hexagonal ivumela ukudityaniswa kwe-wrench okanye i-socket ukusuka kwii-engile ezininzi, iyenza ibe yeyona nto isebenzayo kwaye isetyenziswa ngokubanzi uhlobo lwebholithi kuwo onke amashishini. Kukho iintlobo ezimbini eziphambili:

● I-Hex Bolt (ISO 4014 / DIN 931) - Intambo edibeneyo: inxalenye ye-shank engafundwanga inika amandla okucheba kunye nokulungelelaniswa, ilungele ukudityaniswa kwesakhiwo.

● IHex Cap Screw (ISO 4017 / DIN 933) — Ithungwe ngokupheleleyo: iintambo ziqhuba ubude bonke, zilungele izicelo ezifuna ukudibana komsonto omkhulu.

Umzobo 2. I-Anatomy ye-hex bolt - izinto eziphambili zesakhiwo

2.2 Iintlobo ze-Bolt eziqhelekileyo ze-Hex & ezahlukeneyo

● I-Hex Head Bolt / Cap Screw - Intloko esemgangathweni emacaleni amathandathu; uninzi oluguquguqukayo, olusetyenziswa kulwakhiwo, koomatshini, kwiimoto.

● I-Hex Flange Bolt - I-washer-efana ne-flange edibeneyo phantsi kwentloko; isasaza umthwalo wokubamba, isusa iwasha eyahlukileyo.

● I-Heavy Hex Bolt (ASTM A325) - Intloko enkulu yokudibanisa insimbi yesakhiwo; echazwe kwimigangatho yaseMntla Melika.

● I-Hex Lag Bolt / i-Carriage Bolt - Iintlobo ezikhethekileyo zokudityaniswa komthi ukuya kwintsimbi kunye namaplanga.

2.3 Ubungakanani obuqhelekileyo kunye nemilinganiselo

Ubungakanani	I-pitch	Isitshini	Intloko dia.	Intloko ht.	Shank dia.	Uluhlu lobude
M6	1.0	10 mm	10.0	4.0	6.0	16–60
M8	1.25	13 mm	13.0	5.3	8.0	20–80
M10	1.5	16 mm	16.0	6.4	10.0	25–100
M12	1.75	18 mm	18.0	7.5	12.0	30–120
M16	2.0	24 mm	24.0	10.0	16.0	40–150
M20	2.5	30 mm	30.0	12.5	20.0	50–200
M24	3.0	36 mm	36.0	15.0	24.0	60–240

Itheyibhile 3. Imilinganiselo ye-hex bolt yeBakala 8.8 ngokwe-ISO 4014 / ISO 4017

3. IBanga le-8.8 Iibholiti zeHex — Ukukhetha nokuSebenza

3.1 Unyango loMphezulu

Ukukhetha unyango oluphezulu kuxhomekeke kwindawo yokusebenza kunye neemfuno zokukhusela umhlwa. Iinketho eziqhelekileyo zeBanga lesi-8.8 iibholiti zeheksi ziquka:

● I-Zinc Plating (i-Electroplated) - Uqoqosho, ukuxhatshazwa kwe-corrosion yezoqoqosho; ukhetho olusemgangathweni lwendawo yangaphakathi kunye nethambileyo.

● I-Hot-Dip Galvanizing - Ukugquma kwe-zinc engqindilili yokuvezwa ngaphandle kunye nolwandle; ifuna amandongomane acofayo.

● I-Dacromet Coating - I-Chromium-free, inkqubo yokusingqongileyo; ukuxhathisa okuphezulu kwetyuwa-spray ngaphandle komngcipheko we-hydrogen embrittlement. Efanelekileyo kwizicelo zeemoto kunye nezakhiwo.

● I-Ruspert Coating - Uluhlu oluthathu lwe-organic / zinc composite; ubume bezulu obugqwesileyo, obuchazwa ngokuqhelekileyo kwimigangatho yoshishino yaseJapan.

3.2 Isikhokelo sokuFakela

● Sebenzisa amandongomane eBanga lesi-8 ukuhambelana nokomelela komsonto.

● Faka itorque ekhankanyiweyo yokuqinisa ngokwephepha ledatha lomenzi; Ukuqinisa ngokugqithisileyo ukusilela kwebholithi.

● Lubricate imisonto phambi kokusetyenziswa kwetorque — i-friction coefficient ichaphazela kakhulu umthwalo osele uzuziwe.

● Qinisekisa ubuncinane umsonto omnye ozeleyo uphumela ngaphaya kobuso bendongomane emva kokuqinisa.

● Kuphephe ukuphinda usebenzise iibholithi zeBanga lesi-8.8 kuqhagamshelo olubalulekileyo lwesakhiwo emva kokulayisha kwangaphambili itorque epheleleyo.

3.3 Imigangatho kunye neSiqinisekiso

Iibholiti ze-hex zeBanga lesi-8.8 ziyenziwa kwaye zivavanywe ngokuhambelana nezi:

● I-ISO 898-1 - Iipropati ze-Mechanical of fasteners ezenziwe nge-carbon steel kunye ne-alloy steel.

● ISO 4014 — Iibholiti zeHex ezine-shank enemisonto engaphelelanga (imilinganiselo).

● ISO 4017 — Izikrufu ze-Hex cap ezinemisonto epheleleyo (imilinganiselo).

● Izatifikethi zovavanyo lwemathiriyeli epheleleyo (MTC) ngokwe-EN 10204 3.1 zifumaneka xa ziceliwe.

Quick Reference

IBanga	Izixhobo ezicetyiswayo	Iintlobo zeeMveliso eziqhelekileyo	Unyango lobushushu
8.8	35# / 45# Carbon Steel 40Cr ingxubevange Steel	Hex Bolt, Hex Cap Screw, Carriage Bolt, Stud Bolt	Ukucima kunye nokunciphisa