Kuputsika kuoma zvine chekuita nehukuru hwezviyo uye cobalt yemukati.

Kana chinhu chinoratidzwa kune kushushikana kwekunze, izvi zvinotungamira kune mechanical tension.Mumamiriro ezvinhu aya, simba uye ductility yezvinhu zvinoratidza hwaro hwepfungwa yekuoma.Mune mamwe mazwi, kuomarara kunotsanangurwa sekukwanisa kuramba kutsemuka kana kutsemuka kukura."Palmqvist Method" inowanzo shandiswa kuona kukosha kwekuoma, KIC.

Ndapota tsanangura zvinotevera pakuodha:

*Zvinhu zvewaya,Low Carbon Steel.Medium Carbon Steel.High Carbon Steel.Stainless Steel.Brass.Aluminium.Iron.Optimum with Code of Materials.

* Musoro Zvitaera, ndapota tsanangura kana musoro uine washer.

* Hollow screw, ndapota tsanangura kana ichishandiswa kune hollow screw.

*Triangle screw, ndapota tsanangura iyo dhayamita yewaya kana ichishandiswa kukona yekona.

*Non-standard screw, ndokumbirawo ubatanidze madhirowa kana masampuli kana ashandiswa kune isiri-standard screw.

Mibvunzo yakajairika pakushandisa screw uye nut mold:

1. Mushandi ane ruzivo rwekugadzira mold uye maitiro ekugadzirisa , achiongorora chikonzero chekugovera kusinganzwisisike kwekufa kunetseka kwehuwandu uye deformation.

2.Kuchena kwe mold, gomba remukati kupera hakuna kukwana.

3.Kuoma kwegoko remaoko zvinhu, kupikisa kupisa, uye kuoma kwekupisa kwekushisa hakuna musoro.

4.Kuitira kuchengetedza mutengo wekugadzira, vakasarudza hurombo husina kunaka tungsten carbide simbi uye waya tsvimbo, alloy kutsanangurwa uye kuba zvinhu kurovera mavhiri akakomba hazvina musoro.

5.Iyo collider haina kukodzera, pasina kutsiva mafuta uye kutarisa muchina kwenguva refu.

6.Mushandi wepamusoro wekugadzirisa anofanira kunge ane yepamusoro yepamusoro yepamusoro.