Ọkwa Black Oxide Ugboro Abụọ 

Ọkwa 8.8 ojii oxide nwere ngwụcha ngwụcha abụọ bụ eriri eriri nwere ike dị oke elu nke na-egosipụta eriri na nsọtụ abụọ ya na etiti shank na-enweghị eriri. Ha na-ejikọta arụmọrụ a pụrụ ịdabere na ya (ike tensile 800 MPa), nchebe akụ na ụba site na mkpuchi ntụgharị Fe3O4 dị mkpa, na ntinye dị iche iche maka igwe mmepụta ihe, ụgbọ ala, na ngwa nhazi.

1. Ọkwa 8.8 nhazi ọkwa

Kwa ISO 898-1, nhọpụta "8.8" pụtara ike tensile ọnụ nke 800 MPa na nha nke 0.8 (ike mpụta 640 MPa). Emepụtara site na igwe carbon alloy na-ekpo ọkụ na-ekpo ọkụ, Ọkwa 8.8 na-enye nguzozi ike na ọnụ ahịa dị mma.

Tebụl 1 - Ihe arụrụ arụ ọrụ (ISO 898-1)

2. Ọgwụgwọ n'elu Black Oxide

Black oxide (Fe3O4) bụ mkpuchi mgbanwe kemịkalụ 0.5-1.5 micrometers gbara ọkpụrụkpụ, nke emere site na imikpu n'ime mmiri mmiri alkaline nitrate dị ọkụ na 140-150C. N'adịghị ka electroplating, ọ dịghị akpata mgbanwe akụkụ na ọ dịghị hydrogen embrittlement. Mgbe ejiri mmanụ mgbochi nchara mechie, ọ na-enye ihe ruru awa 96 nke nguzogide nnu.

Isiokwu 2 - Black Oxide mkpuchi Njirimara

3. Ugboro abụọ stud Design

Ihe nrịbama nke nwere ngwụcha abụọ nwere ngwụcha mgbata (a tụbara ya n'ime oghere apịaji) na njedebe akị (na-anabata aku), nke nwere eriri na-enweghị eriri kewapụrụ ya. Ogologo ngwụcha mgbata ahụ na-abụkarị 1.0-1.5d yana njedebe akị 2.0-3.0d, ebe d bụ ​​dayameta ọnụ.