HEX HEAD BOLTS-Iyo Yakakwana Tekinoroji Sumo Yakakwirira-Simba Zvisungo zveKuda Zvikumbiro

2026-08-31

1. Nhanganyaya

Giredhi 10.9 Dacromet hexagon head bolts inomiririra kirasi yepamusoro yezvitsigiro zvesimba zvakanyanya kushandiswa mumotokari, kuvaka, simba remhepo, inorema michina, uye zvivakwa zvekushandisa. Aya mabhaudhi anosanganisa hunhu hutatu hwakakosha: hunyanzvi hwekuita kwekirasi yezvivakwa 10.9, iyo inogoneka uye yakavimbika geometry yehexagonal musoro dhizaini, uye yakasarudzika corrosion dziviriro yakapihwa neDacromet (zinc-flake) coating.

2. Property Kirasi 10.9 - Mechanical Simba

Zvivakwa kirasi 10.9 inotsanangurwa mu ISO 898-1 (Mechanical zvimiro zvezvimisikidzo zvakagadzirwa nekabhoni simbi uye alloy simbi - Chikamu 1: Mabhaudhi, screws uye studs). Zita rekuti "10.9" rinoratidza simba rekusimba re1000 MPa uye goho-ku-tensile reshiyo inosvika 0.9. Aya mafasteners anowanzo gadzirwa kubva kukadzimwa uye kudziya alloy simbi (semuenzaniso, 35CrMo, 42CrMo, kana boron simbi) uye akakodzera kune yakakwira-mutoro dhizaini uye ine simba maapplication.

Key Mechanical Properties (ISO 898-1)

Property	Nominal	Minimum	Unit
Kusimba simba Rm	1000	1040	MPa
Uchapupu hwekushushikana / Kuburitsa simba Rp0.2	900	940	MPa
Kushungurudzika pasi peuchapupu mutoro Sp	830	—	MPa
Elongation mushure mekutsemuka A	—	9	%
Vickers kuoma HV	—	320 - 380	HV
Rockwell kuoma HRC	—	32-39	HRC

Kuenzaniswa nekirasi yezvivakwa 8.8, Giredhi regumi. Izvi zvinoita kuti ive sarudzo inosarudzika yemajoini akakosha muinjini, chassis, simbi yekugadzira, uye inorema michina uko kudzikisa huremu uye kushanda kwepamusoro kunodiwa.

3. Hexa Mabhoti — Dhizaini & Maitiro

Hexagon musoro mabhaudhi (anowanzonzi hex mabhaudhi) ndiwo anonyanya kushandiswa ekunze-anokwenya fasteners. Musoro wemativi matanhatu unopa yakanakisa torque kutapurirana neyakavhurika-magumo kana socket wrenches uye inobvumira kupinda kubva kune akawanda makona. Maviri makuru epasi rose zviyero zvinotonga metric hex mabhoti:

ISO 4014 / DIN 931 - Yakarukwa zvishoma (shank pasi pemusoro)
ISO 4017 / DIN 933 - Yakazara shinda

Partial-thread bolts (ISO 4014) inosarudzwa apo ndege yekugera inofanirwa kuita pane isina kuverengerwa shank yehurefu hwekugera, kana painodiwa kureba kwekusunga. Mabhaudhi akazara-eshinda anosarudzwa kuti aite zvakasiyana-siyana uye apo hurefu hwakazara hunogona kubata nati kana buri rakatepwa.

Yakajairika Dimensions (Saizi Yakasarudzwa, ISO 4014 / DIN 931)

Nominal Saizi	Pitch (mm)	Mhiri kweFlats s (mm)	Kureba Musoro k (mm)	Thread Length b ≤125 mm	Wrench Size
M8	1.25	13	5.3	22	13
M10	1.5	16 / 17	6.4	26	16 / 17
M12	1.75	18 / 19	7.5	30	18 / 19
M16	2.0	24	10.0	38	24
M20	2.5	30	12.5	46	30
M24	3.0	36	15.0	54	36

Ongorora: Kupfuura-mafurati zviyero zvinogona kusiyana zvishoma pakati peISO neDIN akatevedzana kune mamwe saizi (semuenzaniso, M10 neM12). Gara uchisimbisa mwero unoshanda wekushandisa. Chigadzirwa mamakisi A uye B anotsanangura dimensional kushivirira; Giredhi A rakasimba uye rinowanzo shandiswa kune madhayamita madiki.

Zvakanakira Hexagon Musoro Dhizaini

Yakakwira torque yekufambisa kugona neyakajairwa maturusi
Kusvikika kwakanaka munzvimbo dzakavharirwa kubva pamakona matanhatu anobvira
Kugadzira kusingadhuri uye kuwanikwa kwakapararira
Inoenderana nehuwandu hwakazara hwenzungu, washers, uye yekukiya michina

HEX HEAD BOLTS--A Comprehensive Technical

4. Dacromet Coating - Advanced Corrosion Protection

Dacromet ndeye proprietary zinc-flake coating tekinoroji (yakatangwa neMetal Coatings International). Iyo ine zinc nealuminium flakes yakamiswa muinorganic binder, inoshandiswa nedip-spin kana nzira dzekupfapfaidza uye inorapwa pa300–340 °C. Iyo inokonzeresa yakaonda, dense, sirivheri-grey firimu inopa akawanda-mechanism corrosion dziviriro pasina njodzi yehydrogen embrittlement - yakakosha mukana kune yakakwirira-simba fasteners seGiredhi 10.9 uye 12.9.

Maonero Akakosha Ekuita

Parameter	Typical Value / Performance
Coating ukobvu	5 – 15 μm (Giredhi A ≈ 5 μm; Giredhi B ≈ 8 μm)
Neutral salt spray (ASTM B117)	500 - 1000+ maawa kusvika kumarara tsvuku (zvichienderana negiredhi)
Kudzivisa kupisa	Kusvikira ku300 ° C inoenderera (kupfeka kunoramba kuchidzivirira)
Hydrogen embrittlement ngozi	Hapana (isina-electrolytic process, hapana acid pickling)
Coefficient of friction	0.12 - 0.18 (ine mafuta akasiyana akadai seDacromet 500)
Chitarisiko	Metallic sirivha-grey; yunifomu yekuvhara kunyangwe pashinda

Kuenzanisa ne Common Alternative Coatings

Feature	Electro Zinc	Hot-Dip Galvanizing	Dacromet
Ukobvu	5–15 μm	40–85 μm	5–15 μm
Kupfapfaidza munyu (red rust)	72–240 h	400–800 h	500–1000+ h
H₂ njodzi yekukanganisa	High	Present	Hapana
Thread fit impact	Low	Yakakwirira (kazhinji inoda kuwandisa)	Minimal
Inokodzera 10.9+	Limited	Kungwarira kunodiwa	Excellent

Nekuti iyo Dacromet maitiro haisanganisire e electrochemical hydrogen chizvarwa uye isina hukasha asidhi yekunhonga, ndiyo inofarirwa (uye kazhinji inosungirwa) yekupfekedza yeGiredhi 10.9 uye mafasteners epamusoro mumotokari uye maumbirwo ezvimiro.

5. Yakasanganiswa Advantages & Typical Applications

Kana Giredhi 10.9 simba, hexagonal musoro geometry, uye Dacromet coating zvabatanidzwa, iyo inokonzeresa yekusimbisa inopa yakasarudzika chiyero chekuita kwemakanika, kuita gungano, uye kusimba kwenguva refu munzvimbo dzinoparadza.

Primary Benefits

1.High clamp load capability - inogonesa magadzirirwo akareruka akabatanidzwa uye kuvimbika kwepamusoro pasi pekudengenyeka uye mitoro ine simba.

2.Superior corrosion resistance - munyu-spray performance inodarika yakajairwa zinc plating uchichengetedza shinda chaiyo.

3.Hydrogen-embrittlement yakasununguka - yakakosha kuchengetedzwa kwepamusoro kwepamusoro-simba resimbi fasteners.

4.Controlled friction - lubricated Dacromet variants inopa kufanotaurwa torque-tension hukama, kuvandudza kusangana kwegungano.

5.Thermal kugadzikana - inoramba ichidzivirira pakupisa kwakakwirira kunowanikwa mumakamuri ejini uye zvigadzirwa zvemaindasitiri.

Yakajairika Mashandisirwo Minda

Motokari: chassis, kumiswa, injini mounts, powertrain zvikamu
Mhepo simba: shongwe flanges, nacelle zvimiro, nheyo anchors
Kuvaka kwakakura & zvivakwa: mabhiriji esimbi, shongwe dzekutapurirana, njanji
Michina yekurima neyekuvaka inoshanda kunze
Marine uye offshore midziyo (ine yakakodzera giredhi sarudzo)

6. Mhedziso

Giredhi 10.9 Dacromet hexagon musoro mabhaudhi inopa musanganiswa wakavimbika wesimba rakanyanya kusimba, inoshanda yekuisa geometry, uye yenguva refu yekudzivirira ngura. Nekusangana neakaomesesa mechanicha anodiwa eISO 898-1 Kirasi 10.9, inoenderana neyakagadzika zviyero zvakaita se ISO 4014, uye nekushandisa hydrogen-embrittlement-isina zinc-flake coating, izvi zvinosungirira zvinopa mainjiniya mhinduro yakasimbiswa yemajoini akakosha akaoneswa kune ese mekinika kusagadzikana uye hutsinye nharaunda.

Prev. Next.