Kuponyedwa kwa ma valve thupi ndi ubwino wake ndi kuipa kwake

Kuponyedwa kwa ma valve ndi gawo lofunikira pakupanga ma valve, ndipo mtundu wa ma valve oponyera umatsimikizira mtundu wa valavu. Zotsatirazi zimabweretsa njira zingapo zopangira ma valve mumakampani:

Kuponya mchenga:

Kuponyedwa kwa nkhungu yamchenga komwe kumagwiritsidwa ntchito pamakampani opanga ma valve kumatha kugawidwa kukhala mchenga wonyowa, mchenga wowuma, mchenga wa silicate wa sodium ndi mchenga wowumitsa wa furan malinga ndi zomangira zosiyanasiyana.

(1) Mchenga wobiriwira ndi njira yopangira bentonite ngati binder.

Makhalidwe ake ndi awa: nkhungu ya mchenga siyenera kuumitsidwa, siyenera kuumitsidwa, nkhungu yamchenga imakhala ndi mphamvu yonyowa, pachimake cha mchenga ndi chipolopolo zimakhala ndi mphamvu yabwino, yomwe ndi yabwino kuyeretsa kuponyera. High dzuwa akamaumba kupanga, yochepa kupanga mkombero, otsika mtengo zinthu, zosavuta kulinganiza kupanga mzere mzere.

Zoipa zake ndi: kuponyedwa ndikosavuta kutulutsa zolakwika monga porosity, kuphatikizika kwa mchenga ndi kumamatira mchenga, komanso mtundu wa kuponyera, makamaka khalidwe lamkati, siloyenera.

Chiŵerengero ndi katundu wa mchenga wobiriwira wa castings zitsulo ndi motere:

(2) Mchenga wowuma ndi njira yopangira dongo ngati chomangira. Kuonjezera bentonite pang'ono kungapangitse mphamvu yake yonyowa.

Makhalidwe ake ndi awa:nkhungu yamchenga imayenera kuumitsidwa, imakhala ndi mpweya wabwino, sizovuta kutulutsa zolakwika monga kutsuka mchenga, kumangirira mchenga ndi mabowo a mpweya, ndipo khalidwe lamkati la kuponyera ndi labwino.

Kuipa kwake ndi:kufunika mchenga kuyanika zida, kupanga mkombero ndi yaitali.