Ọkwa 8.8 Dacromet Hex Bolt –IN 933 | ISO 4014 | Hexagon Bolt nwere eriri zuru oke yana mkpuchi mgbochi corrosion Dacromet

2026-07-06

Ọkwa 8.8 Dacromet DIN 933 hex bolt na-ejikọta ike igwe dị elu yana nchebe corrosion nke ụlọ ọrụ. N'ịbụ nke anabatara nke ọma n'ọrụ nchara n'èzí, ike ikuku, akụrụngwa ụgbọ oloko, na ihe owuwu àkwà mmiri, ihe nkedo a na-enye arụmọrụ siri ike nke a pụrụ ịdabere na ya n'okpuru ọnọdụ gburugburu ebe obibi na-achọsi ike - na-enweghị ihe egwu mgbaka hydrogen jikọtara ya na ihe ndị ọzọ eji eletrọt.

Ọkwa 8.8 DIN 933 Hex Bolt nwere mkpuchi Dacromet Silver-Grey

Akụkụ 1 - Ịghọta ọkwa 8.8

Dịka ISO 898-1 si kwuo, aha klas ihe onwunwe nke bolt nwere ọnụọgụ abụọ kewara site na nkeji iri. Maka ọkwa 8.8:

Ọnụọgụ mbụ (8): Na-egosi 1/100 nke ike tensile ọnụ na MPa - ya bụ, ike nkwụsi ike kacha nta = 800 MPa.

Nkeji abụọ (8): Na-egosi oke nke kacha ntanye ike na kacha nta ntakiri ike × 10 — ya bụ, mkpụrụ ruru = 0.80, nke pụtara kacha nta mkpụrụ ike = 640 MPa.

Ihe eji arụ ọrụ

Ngwongwo	Uru	Ọkọlọtọ	Usoro ule
Ike ntakiri (nkeji)	800 MPa	ISO 898-1	Nnwale tensile
Ike Mpụta (Nkeji)	640 MPa	ISO 898-1	Nnwale tensile
Ihe akaebe na-akpata nrụgide	580 MPa	ISO 898-1	Ibu akaebe
Oke mkpụrụ	0.80	ISO 898-1	Mgbakọ
Isi ike (Vickers)	245–335 HV	ISO 6507	Vickers ule
Isi ike (Rockwell)	22–32 HRC	ISO 6508	Nnwale Rockwell
Nkwalite na ezumike (nkeji)	12%	ISO 898-1	Nnwale tensile
Mmetụta ike (nkeji)	52 J @ -20 Celsius	ISO 898-1	Nnwale Charpy

A na-emepụta ihe nchara 8.8 site na ígwè-carbon ígwè (dịka, 45 # / SAE 1045) ma ọ bụ ígwè dị ala (dịka, 40Cr / SCM435) ma na-edozi quenching na tempering (Q&T) ọgwụgwọ okpomọkụ iji nweta profaịlụ ike achọrọ. Nchikota nke ike tensile dị elu yana oke mkpụrụ a na-achịkwa na-eme ka ọkwa 8.8 bolts bụrụ nke a pụrụ ịdabere na ya na njikọ nhazi ebugoro ebugoro.

Ogbe ngwa a na-ahụkarị

Ihe owuwu ígwè: Ihe nkpuchi na okpokolo agba, ibé, trusses (BS EN 14399 / ASTM A325-dakọtara).

Akụrụngwa: Ngwongwo akwa, okporo ụzọ kreenu, ụzọ nchekwa okporo ụzọ, nkwonkwo mgbasawanye.

Ike mmeghari ohuru: Njikọ turbine ụlọ elu ikuku, ihe nrụpụta anyanwụ.

Igwe: Igwe ihe eji eme ihe n'ozuzu, akụrụngwa ugbo, njikwa ihe.

Ụgbọala (na-adịghị mkpa): Ịgbanye chassis, ahụ-na-frame, igwe njin na-akwado.

Nkebi 2 - DIN 933 Hex Bolt Standard

DIN 933 (Deutsches Institut für Normung, German Standards Institute) na-akọwapụta akụkụ na ihe geometric chọrọ maka bolts hexagon zuru ezu na eriri metric pitch. Agbanyeghị na ISO 4017 nọchiri anya ya na ọkwa mba ụwa, DIN 933 ka bụ nkọwapụta kachasị na ịzụ ahịa ụlọ ọrụ Europe na ụwa niile.

Akụkụ bụ isi nke DIN 933

eri zuru oke: The bolt na threaded tinyere ya dum shank ogologo - maximizing thread njikọ aka na ibu nkesa.

Isi hexagonal: Ọkọlọtọ obosara-n'akụkụ ụlọ dị larịị na-enye ohere iji ya na metric spanner ọkọlọtọ na wrenches oghere.

Mpempe eriri erighị oke: Igwe ihe dị arọ nke metric (kwa ISO 261) maka mgbakọ ngwa ngwa na iguzogide ịtọpụ n'okpuru ịma jijiji.

Nkwenye akụkụ: Ngwaahịa ọkwa A (m ≤ 10d ma ọ bụ ≤ 150 mm) na ngwaahịa ọkwa B (karịrị nha) kwa ISO 4759-1.

Tebụl ntụaka akụkụ DIN 933

DIN 933 Hex Bolt - Isi akụkụ akụkụ (s = obosara gafee ụlọ, k = elu isi)

Nchọpụta akara

DIN 933 Ọkwa 8.8 bolts nwere akara klaasị "8.8" yana akara njirimara nke onye nrụpụta. Mgbe mkpuchi Dacromet, mgbakwunye ma ọ bụ mkpado ọzọ nwere ike igosi ọgwụgwọ elu.

Nkebi nke 3 - Dacromet Corrosion Nchekwa

Dacromet (nke edekwara dị ka Dacrotised ma ọ bụ DACROMET®) bụ teknụzụ mkpuchi mmiri na-enweghị chromate, zinc-na-aluminium flake nke sitere na Diamond Shamrock Chemicals mepụtara. Ọ na-enye nchebe corrosion pụrụiche nke ịchụàjà ma bụrụ ọgwụgwọ elu kachasị amasị maka bolts ọkwa 8.8 ejiri na ngwa mpụga yana ngwa ike gburugburu.

Kedu ka Dacromet si arụ ọrụ

Ihe mkpuchi ahụ nwere otutu zinc na aluminom flakes jikọtara ọnụ site na matrix inorganic chromate based binder matrix, nke etinyere site na ntinye-spinning wee gwọọ ya na ihe dịka 300 Celsius. Microstructure nke oyi akwa na-emepụta ụzọ na-emerụ ahụ maka ndị na-emebi emebi, na-enye ma mgbochi na ihe nchebe (galvanic) àjà:

Nchekwa mgbochi: Okpokoro flake na-agbakọta ọnụ na-egbochi mmiri na ion chloride iru nchara nchara.

Nchekwa ịchụàjà (galvanic): Zinc flakes bụ electrochemically obere mma karịa ígwè; ha na-emebi emebi nke ọma, na-echebe akụkụ nchara ekpughere n'ebe ndị e gbuturu na ebe ndị mebiri emebi.

Mmetụta ọgwụgwọ onwe: Ngwaahịa Zinc corrosion na-emechi obere ntụpọ mkpuchi, na-agbatị ndụ nchebe.

Data arụmọrụ igodo

Ngwongwo	Dacromet	Galvanizing na-ekpo ọkụ	Zinc Electroplating	Phosphating
Nguzogide nfesa nnu	≥ 480h (nwere ike iru 1000+ h)	200-500 h	96–120 elekere	<72h
Mkpuchi Ọkpụrụkpụ	6–10 µm	50-100 µm	5-15 µm	5-15 µm
Embrittlement hydrogen	Ọ dịghị nke (a naghị achọ ime achịcha)	Ọ dịghị	Nnukwu ihe ize ndụ	Ihe ize ndụ dị ala
Ndidi eri eri	Uwe na-adịghị emetụta (mkpa)	Ọtụtụ mgbe na-emetụta ya	N'ozuzu OK	N'ozuzu OK
RoHS / REACH kwekọrọ	Ee (hexavalent-Cr-free)	Ee	Na-adịgasị iche	Ee
Ngwa a na-ahụkarịs	Ọdịdị dị n'èzí, ụlọ elu ikuku, akwa mmiri	Ọpụpụ siri ike	Ime ụlọ/ọkụ	Ime ụlọ

Nnwale ịgba nnu maka ISO 9227. Ọkpụrụkpụ Dacromet a na-ahụkarị: 6-10 µm. Nsonaazụ nwere ike ịdịgasị iche site na nhazi usoro na ngwa ngwa.

Ọkọlọtọ na nkọwapụta

ISO 10683: Ihe mkpuchi flake zinc na-abụghị nke elektrọnik etinyere maka ihe nkedo.

EN ISO 10683: Nkwenye European ISO 10683.

ASTM F1136: Zinc / aluminum corrosion-echebe mkpuchi maka fasteners.

VDA 235-104: Ọkọlọtọ ụgbọ ala German maka mkpuchi flake zinc.

Banyere Fujirui Metal - Ọkachamara Onye nrụpụta & Onye mbupụ

Fujirui Metal na-arụpụta ma na-ebupụ ihe nkedo ziri ezi gụnyere ọkwa 8.8 / 10.9 / 12.9 hex bolts, DIN 933 bolts zuru ezu, DIN 931 akụkụ-thread bolts, stud bolts, na ngwa ngwa omenala. Nhọrọ ọgwụgwọ dị n'elu gụnyere Dacromet, Ruspert, galvanising na-ekpo ọkụ, na zinc electroplating. Emepụtara ngwaahịa niile ka ọ bụrụ ụkpụrụ ISO, DIN na ASTM nwere asambodo nnwale ihe zuru oke (MTC).

Enweghị. Na-esote.

Akụkọ kacha ọhụrụ