ʻO Dacromet i uhi ʻia hexagonal cylindrical head screw: ʻO kahi pahu liʻiliʻi e hoʻoholo ai i ke ola o nā mea hana nui, anti-corrosion a me ka corrosion-resistant, a ʻaʻohe mea huna huna o ka hydrogen embrittlement.

2026-11-04

1. Hoʻomaka: ʻO ka Bolt e paʻa ai nā mīkini

E hele i loko o kekahi hale kūʻai mīkini, ke kelepona robot, a i ʻole ka makani-turbine nacelle a e ʻike ʻoe i ka mea hoʻopaʻa like: he wili poʻo cylindrical me kahi hoʻomaha hexagonal, i hoʻopaʻa ʻia me kahi kī Allen. ʻO kēia ka hexagon socket head screw, Hoʻohālikelike ʻia e like me DIN 912 a me ISO 4762. ʻO ia ka pahu paʻamau no nā mold die, nā mea mīkini, nā manifold hydraulic, a me nā hui kikoʻī, no ka mea e hoʻopaʻa ʻia i ka ukana paʻa kiʻekiʻe i loko o kahi envelope paʻa a hiki ke hoʻihoʻi ʻia i kahi counterbore.

2. Huahana Huahana: Hexagon Socket Head Cap Screw

Hoʻonohonoho ʻia ka geometry o kēia bolt no ka hoʻouka mua ʻana, ʻaʻole no ka nānā ʻana.

Poʻo pōʻalome ka helehelena palahalaha e puunaue ana i ka ukana pipili ma luna o kahi poepoe piha.
Puku hexagon kūloko(metric ma waena o nā papahele mai 2.5 mm a i 36 mm), e hoʻouna ana i ka torque ma o ʻeono mau maka me ka liʻiliʻi o ka cam-out.
Loko metric piha piha(ʻoi a maikaʻi paha ka pitch no ISO 261), ʻōwili ʻia ma mua o ka ʻoki ʻia no ke kahe mau ʻana o ka palaoa a ʻoi aku ka maikaʻi o ke ola luhi.
Nā papa waiwai 8.8, 10.9, a me 12.9, e uhi ana i ka ikaika tensile mai 800 a 1,220 MPa.

Loko	Poʻo Dia. (dk)	Kiʻekiʻe Poʻo (k)	Hex Socket (s)	Papa 8.8 Tensile	Papa 12.9 Tensile	Nā lōʻihi maʻamau
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

ʻO ka ratio o ke poʻo a me ka milo ka mea nui no ka hoʻolālā ʻino: ʻo ke poʻo cylindrical nui e hāʻawi i ka uhi i kahi ākea ākea haʻahaʻa e hoʻopaʻa ai, ʻoiai ʻo ka ʻūhā hohonu ka wahi koʻikoʻi o ka uhi ʻana o ka wili holoʻokoʻa - ʻo ia kahi e hoʻouka mua ai ka ʻōpala a kahi kiʻi ʻoniʻoni ʻoniʻoni a piha ʻole paha e hopu ai ka pahu.

ʻO Dacromet i uhi ʻia i ka hexagonal cylindrical head screw

3. Hoʻokomo: Torque, Preload, and Coating Interaction

ʻAʻole waiwai ka pōleʻa kūpaʻa inā hemo ka hui. Hāʻawi ka pākaukau 2 i ka torque hui no ka papa 8.8 a me 10.9 socket head screws me ka uhi Dacromet (μ ≈ 0.14).

Loko	Papa 8.8 Torque	Papa 8.8 Preload	Papa 10.9 Torque	Papa 10.9 Preload
M5	6.5 N·m	4.0 kN	9.0 N·m	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

E hoʻohana i ke kī pololei.ʻO ke kī Allen ʻeleʻele a i ʻole ka liʻiliʻi e hoʻopōʻino i ke kumu a hōʻike i ke kila kila - kahi pololei e hoʻomaka ai ka ʻino.
E mahalo i ka counterbore.Noho ka poʻo ma kona alo piha piha; ʻO ka counterbore i hoʻopaʻa ʻia a poino paha e hōʻemi ana i ka wahi hoʻopili a hiki ke nahā i ke kiʻi ʻoniʻoni ma lalo o ka ukana.
Mai hoʻohui i nā ʻōnaehana uhima ka hui like me ka nānā ʻole hou ʻana i ka torque. He ʻokoʻa ko ka wili Dacromet i loko o ka nati maʻemaʻe ma mua o ka wili i uhi ʻia i loko o ka nati i uhi ʻia.
Hoʻopili hou ma hope o ka hoʻopaʻa ʻanama luna o nā puʻupuʻu palupalu a i ʻole nā hale plastik; ʻaʻole kolo ke kiʻi maloʻo, akā hiki i ka mea pipili.

4. Ka hopena

He ʻāpana liʻiliʻi ka Dacromet-coated hexagon socket head screw e hoʻoholo i ke ola lawelawe o kahi hui nui. ʻO kona poʻo cylindrical a me ka hexagon i loko e hāʻawi i ka ukana paʻa i nā koi o nā mīkini hou; Hāʻawi ka zinc-aluminum flake coating i ka hana anti-corrosion e koi ʻia ana i waho, moana, a me ka lawelawe kaʻa ʻana - me ka ʻole o ka hydrogen embrittlement, me ka hoʻopaʻa ʻole ʻana i ke kaula, a me ka hoʻopaʻi ʻole o ke kila kila. E wehewehe pono i ke kūkulu ʻana, e hoʻopololei pololei, a ʻoi aku ka lōʻihi o ka pahu i ka pena ma ka mīkini e paʻa pū ai.

ʻAʻole Loaʻa. Aʻe.

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