Mgbaji siri ike n'ihe gbasara nha ọka na ọdịnaya cobalt.

Mgbe ihe na-ekpughe ihe na nrụgide mpụga, nke a na-eduga n'ọgba aghara n'ibu.N'okpuru ọnọdụ ndị a, ma ike na ductility nke ihe onwunwe na-egosi ihe ndabere maka echiche nke siri ike.N'ikwu ya n'ụzọ ọzọ, a na-akọwa ike siri ike dị ka ikike iguzogide mgbaji ma ọ bụ nkwụsịtụ.A na-etinyekarị "Ụzọ Palmqvist" iji chọpụta uru siri ike, KIC.

Biko kọwaa dị ka ndị a maka ịtụ:

* Akụrụngwa nke waya, Carbon Steel dị ala.Ọkara Carbon Steel.Elu Carbon Steel.Stainless Steel.Brass.Aluminium.Iron.Optimum with Code of Materials.

* Ụdị isi, biko kọwaa mgbe ị na-eji washer isi.

* Oghere skru, biko kọwaa mgbe ejiri screw oghere.

* Ịghasa triangle,biko kọwapụta dayameta waya mgbe ejiri ya skru triangle.

* Skru na-abụghị ọkọlọtọ, biko tinye eserese ma ọ bụ ihe nlele mgbe ejiri ya maka ịghasa na-abụghị ọkọlọtọ.

Ajụjụ a na-ajụkarị na iji screw na nut mold:

1. Onye na-arụ ọrụ na-arụ ọrụ nwere ahụmahụ nke ịkpụzi na nhazi nhazi , na-enyocha ihe kpatara nkesa na-enweghị ezi uche na-akpata ọnwụ nchekasị na nrụrụ.

2.Ịdị ọcha nke ebu, imecha oghere dị n'ime ezughị.

3.The rigidity nke shei uwe ihe onwunwe, okpomọkụ na-eguzogide, na okpomọkụ ọgwụgwọ ekweghị ekwe.

4.In iji chekwaa ego nke mmepụta, ha ahọpụtara adịghị mma tungsten carbide steel na mkpanaka waya, nkọwa alloy na izu ohi ihe nailing akwa wiil ndị na-enweghị ezi uche.

5.The collider adịghị mma, na-enweghị dochie lubricants na elele igwe ogologo oge.

6.The nna ukwu ọrụ nke mmezi ga-enwe elu oru larịị.