Ọkwa 8.8 Black Oxide Hex Socket Head Cap screws-Ntụle nka nka nke nchedo nrụrụ na ime isi 

2. Ọkwa 8.8 Black Oxide Mechaa: Nchekwa Corrosion

2.1 Kedu ihe bụ Black Oxide?

Black oxide, nke a na-akpọkwa oji, bụ mkpuchi mgbanwe kemịkalụ na-emepụta site n'imeghachi n'elu metal ferrous na ngwọta alkaline oxidizing na okpomọkụ dị elu (na-adịkarị 140 ruo 150 degrees Celsius). N'adịghị ka ihe mkpuchi electroplated dị ka zinc ma ọ bụ Dacromet, nke na-edobe oyi akwa ọla dị iche n'elu mkpụrụ ahụ, oxide ojii na-agbanwe oyi akwa kachasị elu nke nchara n'onwe ya ka ọ bụrụ magnetite (Fe3O4), oxide ojii kwụsiri ike. Ihe si na ya pụta bụ ihe dị gịrịgịrị, matte-oji n'elu nke na-aghọ akụkụ dị mkpa nke ihe nkedo kama ịbụ ihe mgbakwunye.

2.2 Usoro Black Oxide

Usoro oxide ojii maka ọkwa ọkwa 8.8 gụnyere usoro ndị a:

Mwedata na ihicha alkaline iji wepụ mmanụ, ịcha mmiri mmiri, na mmetọ ụlọ ahịa.

Acid pickling iji wepụ ihe ọ bụla nchara elu ma ọ bụ ìhè nchara.

Imikpu na bath alkaline-oxidizing na-ekpo ọkụ (ihe dịka 141 Celsius), ebe oyi akwa magnetite na-etolite na nkeji 10 ruo 20.

Ichacha na akara na mmanụ ma ọ bụ wax na-egbochi nchara, nke na-agbakwunye oyi akwa oxide na mgbochi hydrophobic.

2.3 Àgwà ndị na-eguzogide corrosion

N'onwe ya, oyi akwa oxide ojii dị gịrịgịrị (ihe dị ka 0.5 ruo 1.5 micrometers) na porous, nke pụtara na ọ na-enye naanị nguzogide corrosion dị ntakịrị ma e jiri ya tụnyere zinc plating ma ọ bụ galvanizing na-ekpo ọkụ. Agbanyeghị, mgbe ejikọtara ya na mmanụ na-egbochi nchara ma ọ bụ wax, mkpuchi ahụ na-enweta nguzogide nnu na-anọpụ iche nke ihe dịka awa 24 ruo 96, dabere na ogo akara. Ọkwa nchekwa a zuru oke maka ime ụlọ, ihu igwe na-achịkwa, ma ọ bụ gburugburu ebe na-emebi emebi ebe ihe nkedo anaghị ekpughere ya na mmiri ma ọ bụ ịgba nnu maka ogologo oge.

2.4 Uru na oke

1.Ngbanwe akụkụ efu: N'ihi na oyi akwa oxide dị n'okpuru 2 micrometers gbara ọkpụrụkpụ, oxide ojii anaghị agbanwe nnabata eri. Ọkwa 8.8 fasteners na-ejigide klaasị 6g mbụ ha dabara, na-eme ka mkpuchi ahụ dị mma maka mgbakọ ziri ezi ebe a ga-ezere nnyonye anya eri.

2.Ọ bara uru: Black oxide bụ otu n'ime ọgwụgwọ elu kachasị dị ọnụ ala, dị ọnụ ala karịa zinc-nickel plating, Dacromet, ma ọ bụ igwe anaghị agba nchara ọzọ.

3. Ọ dịghị hydrogen ebrittlement: N'adịghị ka electroplating, black oxide usoro adịghị emepụta hydrogen gas, na-ewepụ ihe ize ndụ nke hydrogen ebrittlement. Nke a dị oke mkpa maka ihe ngbochi ọkwa 8.8 na-arụ ọrụ na ọkwa nrụgide dị elu.

4.Aesthetic mkpesa: Ngwunye matte-oji edo edo na-enye ọdịdị dị ọcha, ọkachamara nke jikọtara ya na mgbakọ ndị gbara ọchịchịrị ma na-ebelata ìhè ọkụ.

5.Limitation - oke mgbochi corrosion n'èzí: Black oxide adịghị mma maka mpụga, mmiri, ma ọ bụ gburugburu ebe na-emebi emebi. Maka ngwa ndị dị otú ahụ, a ga-atụle Dacromet, zinc-nickel plating, ma ọ bụ igwe anaghị agba nchara.

3. Cylindrical Head with Hex Socket Drive

3.1 Nleba anya imewe

Isi cylindrical (nke a na-akpọ socket head op screw head ma ọ bụ DIN 912/ISO 4762 isi) nwere ọdịdị cylindrical dị larịị nke nwere oghere hexagonal gbadara agbagọ n'etiti. Dayameta nke isi na-abụkarị ihe dịka 1.5 ugboro dayameta eri aha, na ịdị elu nke isi dị ihe dịka 0.6 ruo 1.0 ugboro dayameta shank, dabere na nha ya. Geometry a na-enye nnukwu oghere n'okpuru isi ka ọ na-edobe profaịlụ mkpokọta na obere profaịlụ.

3.2 Uru nke Cylindrical Head Design

Ike njigide dị elu: Isi cylindrical na-enye ebe dị elu karịa ka countersunk ma ọ bụ isi bọtịnụ, na-ekesa ibu n'ofe ebe sara mbara ma na-ebelata ihe ize ndụ nke ịbanye n'elu ma ọ bụ mmebi nke workpiece.

Obere ukwu: N'ihi na isi na-anọdụ n'elu elu kama ịbụ ndị a na-atụgharị, isi cylindrical chọrọ naanị oghere dị mfe site na oghere ma ọ bụ oghere. Ọ dịghị ọrụ countersinking achọrọ, na-eme ka nrụpụta dị mfe.

Ntucha ma ọ bụ welie nrụnye: Enwere ike ịwụnye isi ya na elu (ma ọ bụrụ na ngwa ahụ na-enye ohere ka ebuli elu) ma ọ bụ tinye ya na counterbore maka ikpocha ọkụ zuru oke, na-enye mgbanwe nhazi.

Ọdịdị dị ọcha: Isi cylindrical dị nro na-enye ọdịdị mara mma, nke edobere nke ọma na igwe, ngwá ọrụ na ngwa eletrọnịkị ndị ahịa.

3.3 Hex Socket Drive Uru

Oghere hexagonal (Allen) bụ ihe na-akọwapụta ihe nkedo isi mkpuchi oghere. Igodo hex Allen (wrench) na-etinye oge ezumike isi isii, na-ebufe torque iji kwọọ skru. Sistemụ draịva a na-enye ọtụtụ uru dị iche iche karịa hex mpụga, Phillips, ma ọ bụ draịva nwere oghere:

Mgbasa ike dị elu: oghere hex dị n'ime nwere ike iguzogide oke torque dị elu karịa Phillips ma ọ bụ draịva nwere oghere, na-eme ka ntụkwasị obi sie ike na ụkpụrụ preload dị elu achọrọ maka ngwa ngwa 8.8 Grade (ihe ruru 80% nke ihe akaebe na nkwonkwo dị egwu).

Nguzogide cam-out: N'adịghị ka draịva Phillips nke emebere ka ọ pụta (mpụpụ) n'okpuru oke ike, oghere hex na-ejigide njikọ aka zuru oke, na-ebelata ihe ize ndụ nke mwepu ngwá ọrụ na mmebi isi.

Nnweta profaịlụ dị ala: igodo hex na-abịarute n'elu (ntụziaka axial), na-enye ohere itinye n'ime oghere ndị a kpachiri anya ebe wrench enweghị ike iru n'akụkụ. Nke a bara uru karịsịa na mgbakọ ígwè ọrụ dị arọ.

Mbelata ihe ize ndụ ịdọpụ: Ebe nnukwu kọntaktị dị n'etiti igodo hex na mgbidi oghere na-ekesa nrụgide n'otu n'otu, na-ebelata ohere nke nrụrụ mgbidi oghere ma ọ bụ ịdọpụ ya, ọbụlagodi mgbe echichi na mwepụ cycles ugboro ugboro.

4. Ngwa a na-ahụkarị

A na-eji skru isi skru 8.8 ojii oxide hex socket n'ofe ụlọ ọrụ dị iche iche ebe a chọrọ ike dị oke elu, nchebe ime ụlọ, yana ohere mgbakọ kọmpat:

Nrụpụta igwe na akụrụngwa: igwe igwe na-ebugo, ebe obibi gearbox, mgbakọ mgbapụta, na njikọ nhazi nhazi.

Akpaaka (ihe dị n'ime na nke anaghị ekpughere): Mgbakọ dashboard, okpokolo agba oche, braket mkpụbelata ime, na ihe ndị dị n'okpuru mkpuchi echedoro site na ikpughe ihu igwe ozugbo.

Ngwá ọrụ na ihe nrụnye: Ihe mgbakwasị ụkwụ, mgbako jig na ihe nrụnye, na ịnwụ na-atọkwa ebe a na-ejikarị mmachi na mkposa ugboro ugboro.

Eletrọnịkị na ihe mkpuchi: Akụrụngwa a na-agbanye n'elu, igbe ọkụ eletrik, na ogwe njikwa ebe a na-ahọrọ imecha ojii dị ọcha na isi obere profaịlụ.

Ngwongwo na ngwa owuwu ụlọ: Njiko arịa ụlọ modular, ihe ngosi ihe ngosi, na ihe eji arụ ụlọ.

5. Nkwubi okwu

Ọkwa 8.8 ojii oxide hex socket isi okpu na-anọchi anya ihe ngwọta kwụziri ahazi nke na-egbo mkpa injinia abụọ dị oke mkpa n'otu oge. Ngwucha ojii oxide na-enye ihe mgbochi corrosion nke na-enweghị nke hydrogen-embrittlement nke na-agbanwe agbanwe na nke na-agbanwe agbanwe. Ọ bụ ezie na nguzogide corrosion ya nwere oke ma e jiri ya tụnyere mkpuchi adịchaghị mma dị ka Dacromet ma ọ bụ zinc-nickel, ọ karịrị nke ọma maka gburugburu ime ụlọ na nke dị nro. Isi cylindrical nwere hex soket mbanye, ka ọ dị ugbu a, na-ebuga nnyefe torque dị elu, ike nrụnye kọmpat, yana ihe ịchọ mma dị ọcha nke na-eme ka ọ bụrụ nhọrọ kacha amasị maka mgbakọ igwe ebe oghere, ntụkwasị obi, na ọdịdị ihe niile. Ọnụ, njirimara abụọ a na-eme ka ọkwa isi isi oghere oxide 8.8 na-eme ka ọ bụrụ ihe na-agbanwe agbanwe, dị ọnụ ahịa na nke a pụrụ ịdabere na ya maka ụdị ngwa nrụpụta dị iche iche.