Fahimtar roughness Ra
2023-05-18
一·
Ma'anar rashin daidaituwa
Ƙunƙarar saman yana nufin rashin daidaituwa na saman da aka yi amfani da shi tare da ƙananan raguwa da ƙananan kololuwa da kwaruruka. Tazarar (nisa na igiyar ruwa) tsakanin kololunsa ko kwaruruka kadan ne (kasa da 1mm), wanda ke da kuskuren siffar sifar micro-geometric.Musamman, yana nufin tsayi da tazarar S na ƙaramin kololuwar kwari Z. Gabaɗaya S ya raba shi:
S<1mm shine rashin ƙarfi na saman;
1 ≤ S ≤ 10mm shine waviness;
S＞ 10mm yana cikin siffar f.
二·Babban tasiri na rashin daidaituwa a kan sassa
Yana tasiri juriya. Mafi ƙanƙanta saman, ƙarami ingantaccen wurin tuntuɓar juna tsakanin filayen mating, mafi girman matsa lamba, mafi girman juriya, da saurin lalacewa.
Yana shafar kwanciyar hankali na dacewa. Don dacewa da sharewa, daɗaɗɗen daɗaɗɗen, mafi ƙarancin sawa, yana haifar da karuwa a hankali a yayin aikin aiki; Don dacewa da tsangwama, saboda ƙananan kololuwar microconvex an matse su lebur yayin taro, ainihin tsangwama mai tasiri yana raguwa kuma ƙarfin haɗin yana raguwa.
Yana shafar ƙarfin gajiya. Akwai manyan magudanan ruwa a saman sassan sassa masu ƙaƙƙarfan, waɗanda, kamar ƙwanƙwasa masu kaifi da fashe, suna da damuwa da damuwa don haka suna shafar ƙarfin gajiyar sassan.
Yana shafar juriya na lalata. Ƙunƙarar saman sassa na iya haifar da gurɓataccen iskar gas ko ruwa don kutsawa cikin rufin ƙarfe na ciki ta wurin ramukan da ba a gani ba a saman, yana haifar da lalata.
Yana shafar aikin rufewa. M saman ba zai iya dacewa da juna ba, kuma iskar gas ko ruwa na yoyo ta cikin gibin dake tsakanin wuraren tuntuɓar.
Yana shafar taurin lamba. Ƙunƙarar lamba shine ikon haɗin haɗin gwiwa na wani sashi don tsayayya da nakasar lamba a ƙarƙashin sojojin waje. Ƙunƙarar na'ura ya dogara da yawa akan taurin lamba tsakanin sassa daban-daban.
Yana shafar daidaiton aunawa. Ƙunƙarar saman duka ma'aunin da aka auna na ɓangaren da ma'auni na kayan aikin aunawa kai tsaye yana rinjayar daidaiton ma'auni, musamman ma a daidaitaccen ma'auni.
Bugu da ƙari, ƙaƙƙarfan yanayi yana da nau'i daban-daban na tasiri a kan sutura, haɓakaccen zafi da juriya na lamba, tunani da kaddarorin radiation, juriya ga kwararar ruwa da gas, da gudana a halin yanzu a saman masu jagorancin sassa.
