Ihe mkpuchi elu na nkedo dị mkpa dị ka ihe nkedo n'onwe ya. A na-emepụta eriri screw site na ịkpụ ma ọ bụ ịmepụta usoro nhazi, na mkpuchi elu na-enye nchebe dị mkpa maka ịghasa shank na eri.
Iji mezuo nke ahụ, skru na-erite uru dị ukwuu site n'ụdị mkpuchi elu dị iche iche a na-emezi nke a na-ahazi na ngwa nkedo ọ bụla iji nye nchebe kacha mma na mgbawa.
Na nkenke, a na-etinye ihe mkpuchi elu na screws iji mee ka nkwụsị elu dịkwuo elu ma chebe ịghasa site na ọdịda akaghi aka n'ihi corrosion ma ọ bụ mgbawa.
Yabụ, kedu usoro ọgwụgwọ ịghasa a na-ahụkarị? Ndị a bụ usoro ọgwụgwọ elu nke ịghasa a na-ahụkarị:
1. Zinc plating
Usoro ọgwụgwọ elu kachasị makaScrew bụ electro galvanizing. Ọ bụghị naanị ọnụ ala, ma ọ nwekwara ọmarịcha ọdịdị. Electroplating dị na oji na akwụkwọ ndụ akwụkwọ ndụ agha. Otú ọ dị, otu mwepu nke electro galvanizing bụ na ya mgbochi-corrosion arụmọrụ bụ n'ozuzu, na ọ nwere kasị ala mgbochi corrosion arụmọrụ nke ọ bụla plating (mkpuchi) oyi akwa. N'ozuzu, screws mgbe electro galvanizing nwere ike ịgafe ule ịgba nnu nnu na-anọpụ iche n'ime awa 72, a na-ejikwa onye na-ahụ maka mkpuchi pụrụ iche, nke mere na nyocha ịgba mmiri nnu mgbe electro galvanizing nwere ike ịdịru ihe karịrị awa 200, mana ọ dị oke ọnụ. , na-eri 5-8 ugboro dị ukwuu dị ka general galvanizing.
2. Chromium plating
Ihe mkpuchi chromium na ihe nkedo screw kwụsiri ike na gburugburu ebe obibi, ọ naghị adị mfe ịgbanwe agba ma ọ bụ na-efunahụ ya, nwere ike siri ike, na-eguzogidekwa iyi. Ọ bụ ezie na a na-ejikarị mkpuchi chromium eme ihe dị ka ihe eji achọ mma na ihe nkedo, a na-ejikarị ya eme ihe na ụlọ ọrụ na-achọ nnukwu nguzogide corrosion. N'ihi na ezigbo chrome plated fasteners dị oke ọnụ dị ka igwe anaghị agba nchara, a ga-eji ha naanị mgbe ike igwe anaghị agba nchara ezughị oke. Iji kwalite nguzogide corrosion chromium plating, ọla kọpa na nickel kwesịrị ka a na-ekesa tupu etinye chromium. Ọ bụ ezie na mkpuchi chromium nwere ike iguzogide okpomọkụ dị elu nke 1200 degrees Fahrenheit (650 degrees Celsius), ọ na-enwe otu nsogbu mgbagwoju anya hydrogen dị ka galvanizing.
3. Silver na nickel plating n'elu
Ihe mkpuchi ọlaọcha maka ihe nkedo screwna-eje ozi dị ka mmanụ mmanu siri ike maka ihe nkedo yana ụzọ isi gbochie mmebi. N'ihi ego a na-efu, a naghị eji skru ndị ahụ eme ihe, na mgbe ụfọdụ, a na-ekekwa ọla ọcha obere bolts. N'agbanyeghị na ọ na-emebi ikuku, ọlaọcha ka na-arụ ọrụ na 1600 degrees Fahrenheit. Iji na-arụ ọrụ na akwa okpomọkụ dị elu ma gbochie oxidation screw, ndị mmadụ na-eji nguzogide okpomọkụ ha dị elu na àgwà mmanu mmanu. A na-etinyekarị ihe ngbochi nke nickel n'ebe ndị nwere nnukwu conductivity na nguzogide corrosion. Dịka ọmụmaatụ, ọdụ batrị ụgbọ ala na-abata.
4.Ịghasa ọgwụgwọ eluDacromet
The elu ọgwụgwọ nkeDacromet maka screw fastenersenweghị hydrogen embrittlement, na torque preload na-arụ ọrụ nke ọma mgbe niile. Agbanyeghị, ọ na-emetọ nke ukwuu. Na-eburu n'uche okwu ndị na chromium na gburugburu ebe obibi, ọ bụ n'ezie kasị adabara maka elu ike fasteners na ike mgbochi corrosion chọrọ.
5. N'elu phosphating
Ọ bụ ezie na phosphorating dị ọnụ ala karịa galvanizing, ọ na-enye obere nchebe megide corrosion.Ihe nkedo ịghasakwesịrị ịbụ mmanụ mgbe phosphating gasịrị n'ihi na arụ ọrụ mmanụ nwere ọtụtụ ihe jikọrọ ya na nguzogide corrosion nke ihe nkedo. Tinye mmanụ mgbochi n'ozuzu mgbe phosphating gasịrị, na nyocha nke nnu nnu kwesịrị iwepụta naanị awa 10 ruo 20. Ihe mkpuchi mkpuchi nwere ike were awa 72-96 ma ọ bụrụ na a na-etinye mmanụ mgbochi dị elu, ma ọnụ ahịa ya bụ 2-3 ugboro karịa mmanụ phosphating. Ebe ọ bụ na ike ha na-eme ka ike sie ike na-arụ ọrụ nke ọma na-arụ ọrụ nke ọma, a na-emeso ihe ka ọtụtụ n'ime ihe mkpuchi ụlọ ọrụ mmepụta ihe site na phosphating + mmanụ. A na-arụ ya n'ọrụ n'ụlọ ọrụ mmepụta ihe n'ihi na ọ nwere ike gboo mkpa njigide a na-atụ anya ya n'oge mgbakọ nke akụkụ na akụkụ. Karịsịa mgbe ị na-ejikọta ụfọdụ ihe ndị dị mkpa, ụfọdụ skru na-eji phosphating, nke nwekwara ike igbochi okwu nke embrittlement hydrogen. N'ihi ya, n'ime ụlọ ọrụ mmepụta ihe, screw na ọkwa dị elu karịa 10.9 bụ phosphated.
Oge nzipu: Feb-15-2023