Countersunk Head Phillips Screws

Akwai nau'ikan fuka-fukai iri-iri da yawa, amma duk suna da halaye iri ɗaya. Akwai manyan halaye guda biyar. Kayan aikin da ke gaba yana ba da cikakken bayani game da fasalulluka guda biyar na skru masu hako kai:

1. Yawancin lokaci an yi shi da ƙarfe mai carburized (99% na jimlar samfurori). Hakanan za'a iya amfani dashi akan bakin karfe ko mara ƙarfe.

2. Dole ne a yi amfani da sukurori mai ɗorewa tare da fuka-fuki. Hardware ya gaya muku cewa carbon karfe kai tapping sukurori dole ne a carburized, da bakin karfe kai tapping sukurori tare da reshe kusoshi dole ne a m bayani taurare. Domin yin sukulan taɓawa da kai su hadu da kaddarorin inji da aikin da ake buƙata ta daidaitattun.

3. Fuka-fukai kai-hakowa dunƙule kayayyakin da high surface taurin da kyau core tauri. Wato "laushi a ciki da karfi a waje". Kayan aikin yana gaya muku cewa wannan babban siffa ce ta buƙatun aikin ƙusoshi masu haƙowa kai. Idan taurin saman ya yi ƙasa, ba za a iya murɗa shi cikin matrix ba; idan jigon yana da ƙarancin tauri, zai karye da zarar an dunƙule shi kuma ba za a iya amfani da shi ba. Saboda haka, "laushi a ciki da m waje" sukurori ne masu hako kai tare da kusoshi masu fuka-fuki don biyan bukatun aiki.

4. The surface of Best Self hakowa dunƙule tare da Wings kayayyakin bukatar surface kariya magani, yawanci electroplating magani. Kayan aikin yana gaya muku cewa saman wasu samfuran yana buƙatar a bi da su tare da phosphate (phosphating). Misali: Sukulan hakowa da kai tare da kusoshi na fikafi akan allunan bango galibi phosphated ne.