Dacromet mkpuchi hexagonal cylindrical head screw: Obere bolt na-ekpebi ndụ nke akụrụngwa buru ibu, mgbochi corrosion na corrosion na-eguzogide ọgwụ, ọ nweghịkwa ihe egwu zoro ezo nke embrittlement hydrogen.

2026-11-04

1. Okwu Mmalite: Bolt nke na-ejide igwe ọnụ

Gagharịa n'ụlọ ahịa igwe ọ bụla, cell robot, ma ọ bụ ikuku turbine nacelle ị ga-ahụkwa otu ihe nkedo: screw cylindrical-head with a hexagonal recess, jisie Allen ike. Nke a bụ hexagon oghere isi okpu ịghasa, Standardized dị ka DIN 912 na ISO 4762. Ọ bụ ndabara bolt maka anwụ ebu, igwe ngwaọrụ, hydraulic manifolds, na nkenke mgbakọ, n'ihi na ọ concentrates elu mwekota ibu na a kọmpat envelopu na ike recessed n'ime a counterbore.

2. Nkọwa ngwaahịa: Hexagon Socket Head Cap Screw

A na-ahazi geometry nke bolt a maka ibugharị ya, ọ bụghị maka ọdịdị dị nro:

Isi cylindricalnwere ihu dị larịị nke na-ekesa ibu mwekota n'elu mpaghara okirikiri zuru oke.
oghere hexagon dị n'ime(metric gafee-flats sitere na 2.5 mm ruo 36 mm), na-ebufe torque site na ihu isii nwere obere cam-out.
eri metric zuru oke(ezigbo pitch ma ọ bụ nke dị mma na ISO 261), tụgharịa kama ịkpụ maka mkpụrụ ọka na-aga n'ihu na ndụ ike ọgwụgwụ ka mma.
Klas nke ihe onwunwe 8.8, 10.9, na 12.9, na-ekpuchi ike tensile site na 800 ruo 1,220 MPa.

eri	Isi Dia. (dk)	Ogologo isi (k)	Hex Socket (s)	Klas 8.8 Tensile	Klas 12.9 Tensile	Ogologo oge niile
M5	8,5 mm	5.0 mm	4 mm	800 MPa	1,220 MPa	10-60 mm
M6	10.0 mm	6.0 mm	5 mm	800 MPa	1,220 MPa	12-80 mm
M8	13.0 mm	8.0 mm	6 mm	800 MPa	1,220 MPa	16-100 mm
M10	16.0 mm	10.0 mm	8 mm	800 MPa	1,220 MPa	20-120 mm
M12	18.0 mm	12.0 mm	10 mm	800 MPa	1,220 MPa	25-150 mm
M16	24.0 mm	16.0 mm	14 mm	800 MPa	1,220 MPa	30-200 mm

The isi-na-thread ruru ihe maka corrosion imewe: a nnukwu cylindrical isi na-enye mkpuchi a sara mbara, ala-nrụgide elu na-ejikọta ya, mgbe miri ohere ezumike bụ kasị mkpuchi-kpamkpam mpaghara nke dum ịghasa - ọ bụ ebe nchara na mbụ ọgụ na ebe ihe nkiri dị gịrịgịrị ma ọ bụ ezughị ezu na-eme ka bolt ahụ jide.

Dacromet mkpuchi isi hexagonal cylindrical skru

3. Nwụnye: Torque, Preload, na mkpuchi mkpuchi

Ihe mgbochi na-eguzogide corrosion abaghị uru ma ọ bụrụ na nkwonkwo ahụ tọpụ. Tebụl 2 na-enye torque mgbakọ maka klaasị 8.8 na 10.9 sọket isi okpu nwere mkpuchi Dacromet (μ ≈ 0.14).

eri	Klas 8.8 Torque	Klas 8.8 bububuru	Klas 10.9 Torque	Klas 10.9 bububuru
M5	6.5 N·m	4.0 kN	9.0 Nm	5,6 kN
M6	11.5 N·m	5,7 kN	16.0 N·m	8.0 kN
M8	28.0 N·m	10.4 kN	39.0 N·m	14.6 kN
M10	55.0 N·m	16.5 kN	78.0 N·m	23.1 kN
M12	96.0 N·m	24.0 kN	135 N·m	33.6 kN
M16	240 N·m	45.0 kN	335 N·m	63.0 kN

Jiri igodo ziri ezi.Igodo Allen nke eyighị ma ọ bụ nke na-erughị ala na-emebi oghere ma kpughee nchara efu - kpọmkwem ebe corrosion na-amalite.
Kwanyere counterbore ugwu.Isi oche na-anọdụ n'ihu ya zuru oke; counterbore chamfered ma ọ bụ mebiri emebi na-ebelata mpaghara kọntaktị ma nwee ike ịgbawa ihe nkiri mkpuchi n'okpuru ibu.
Ejikọtala usoro mkpuchin'otu nkwonkwo ahụ na-enweghị nyochagharị torque. Mkpọsa Dacromet n'ime akị dị larịị nwere esemokwu dị iche karịa nke a na-ekpuchi ekpuchi n'ime akị nwere mkpuchi.
Re-torque mgbe mmezina gaskets dị nro ma ọ bụ ụlọ plastik; ihe nkiri akọrọ anaghị akpụ akpụ, mana ihe ejikọtara nwere ike.

4. Mmechi

Okpu isi mkpuchi hexagon nwere mkpuchi Dacromet bụ obere akụrụngwa na-ekpebi ndụ ọrụ nke nnukwu mgbakọ. Isi cylindrical ya na hexagon dị n'ime ya na-ebunye ibu nke igwe ọgbara ọhụrụ chọrọ; Ihe mkpuchi ya nke zinc-aluminom flake na-ebuga arụmọrụ mgbochi corrosion nke dị n'èzí, mmiri, na ọrụ njem chọrọ - na-enweghị hydrogen embrittlement, na-enweghị eri re-tapping, na-enweghị galling ntaramahụhụ nke igwe anaghị agba nchara. Ezipụta ihe owuwu ahụ nke ọma, gbanye ya nke ọma, na bolt ga-agbatị agba na igwe ọ na-ejikọta ọnụ.

Enweghị. Na-esote.

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