Kumvetsetsa njira yogwiritsira ntchito makina ophulitsira mchenga pogwiritsa ntchito nzeru wamba (Ⅲ)

Kuchepetsa kupsinjika maganizo ndi kulimbitsa pamwamba

Mwa kugunda pamwamba pa workpiece ndi mchenga, kupsinjika kumachotsedwa ndipo mphamvu ya pamwamba pa workpiece imawonjezeka, monga kukonza pamwamba pa workpiece monga masiponji, zida zomangira ndi masamba a ndege.

Kuyeretsa makina oyeretsera mchenga

Pali miyezo iwiri yoyimira ukhondo padziko lonse lapansi: imodzi ndi "SSPC-" yomwe inakhazikitsidwa ndi United States mu 1985; yachiwiri ndi "Sa-" yomwe idapangidwa ndi Sweden mu 76, yomwe yagawidwa m'magawo anayi, omwe ndi Sa1, Sa2, Sa2.5 ndi Sa3, ndipo ndi muyezo wapadziko lonse lapansi. Tsatanetsatane wake ndi uwu:

Sa1 – yofanana ndi THE US SSPC – SP7. Pogwiritsa ntchito burashi yosavuta yamanja, njira yopera nsalu ya emery, iyi ndi mitundu inayi ya ukhondo ndi yotsika pang'ono, chitetezo cha chophimbacho ndi chabwino pang'ono kuposa workpiece popanda kukonza. Muyezo waukadaulo wa chithandizo cha Sa1 level: pamwamba pa workpiece sipayenera kuwoneka mafuta, mafuta, oxide yotsalira, dzimbiri, utoto wotsalira ndi dothi lina. Sa1 imatchedwanso kuyeretsa burashi yamanja. (kapena kalasi yoyeretsa)

Mulingo wa Sa2 — wofanana ndi mulingo wa THE US SSPC — SP6. Kugwiritsa ntchito njira yoyeretsera mchenga, yomwe ndi yotsika kwambiri poyeretsera mchenga, ndiko kuti, zofunikira zonse, koma chitetezo cha chophimbacho kuposa kuyeretsa burashi yamanja kuti chiwongolere zambiri. Muyezo waukadaulo wa Sa2: pamwamba pa workpiece payenera kukhala opanda mafuta, dothi, oxide, dzimbiri, utoto, oxide, dzimbiri, ndi zinthu zina zakunja (kupatula zolakwika), koma zolakwikazo siziyenera kupitirira 33% ya pamwamba pa mita imodzi, kuphatikiza mithunzi yaying'ono; Kuchepa pang'ono kwa mtundu komwe kumachitika chifukwa cha zolakwika kapena dzimbiri; Khungu la oxide ndi zofooka za utoto. Ngati pali kubowola pamwamba poyambirira pa workpiece, dzimbiri ndi utoto pang'ono zidzakhalabe pansi pa kubowola. Gulu la Sa2 limatchedwanso kuti commodity cleaning grade (kapena industrial grade).

Sa2.5 – iyi ndi mulingo womwe umagwiritsidwa ntchito kwambiri m'mafakitale ndipo ungavomerezedwe ngati chofunikira chaukadaulo komanso muyezo. Sa2.5 imatchedwanso pafupi ndi White cleanup (pafupi ndi yoyera kapena yoyera). Muyezo waukadaulo wa Sa2.5: wofanana ndi gawo loyamba la Sa2, koma cholakwikacho chimangokhala osapitirira 5% ya pamwamba pa mita imodzi, kuphatikiza mthunzi wochepa; Kuchepa pang'ono kwa mtundu komwe kumachitika chifukwa cha zolakwika kapena dzimbiri; Zolakwika za khungu ndi utoto wa oxide.

Kalasi Sa3 — Yofanana ndi US SSPC — SP5, ndi kalasi yapamwamba kwambiri mumakampani, yomwe imadziwikanso kuti Kalasi Yoyeretsera Yoyera (kapena kalasi yoyera). Muyezo waukadaulo wokonza Sa3 level: womwewo ndi mulingo wa Sa2.5, koma mthunzi wa 5%, zolakwika, dzimbiri ndi zina zotero ziyenera kukhalapo.