12.9 gray phosphated gwongworo wheel bolt

Teknụzụ mkpuchi nke dị n'elu ihe nkedo dị ka U-bolts na-abụkarị galvanized oyi, nke nwere ike ibute nchara nchara mgbe ejiri ya mee ihe karịrị otu afọ. Ozugbo nchara, ọ bụghị naanị na ọ ga-emetụta ọdịdị na ọdịdị ya, kamakwa ọ na-emetụta arụmọrụ ya na-enwe mmetụta dị ukwuu n'iji ngwá ọrụ eme ihe, ya mere na ojiji anyị, anyị kwesịrị ịṅa ntị na ọnọdụ ndị a bụ isi iji gbochie nchara.
Mbụ, ka elu nke U-bolt kpọrọ nkụ dị ka o kwere mee ka anyị nwee ike izere ọtụtụ n'ime ya.
1. Mgbakwunye nke uzuzu ma ọ bụ ihe ndị ọzọ na-emepụta ihe metal, na ikuku iru mmiri, mmiri na-ejikọta ya na ihe nkedo igwe anaghị agba nchara, jikọọ abụọ ahụ n'ime micro-batrị, na-ebute mmeghachi omume omume electrochemical, na ihe nkiri nchebe na-adị mfe nke ukwuu mebiri emebi, nke bụ. akpọrọ electrochemical Analyze corrosion..
2. U-bolt igwe anaghị agba nchara nwere nrapado n'elu ihe ọṅụṅụ organic, na enweghị mmiri na oxygen na-emepụta organic acid, organic acid bụ ogologo corrosion n'elu ihe metal.
3. The adhesion nke igwe anaghị agba nchara U-bolts, alkali na nnu-ọgaranya na-ebupụta na-eme ka obodo corrosion nke ụmụ akwụkwọ.
4. N'ụfọdụ ikuku emetọọ (dị ka ikuku na-ejupụta na ọnụ ọgụgụ dị ukwuu nke sulfide dị iche iche, carbon oxides, nitrogen oxides na mba m), mmiri na-enweghị mmiri na-etolite ebe mmiri mmiri nke sulfuric acid, nitric acid, na acetic acid, na-eme ka ụmụ akwụkwọ. ka chemistry structural corrosion.