Chidule cha Kuponya Ma Valve

1. Kodi kuponya n'chiyani?

Chitsulo chamadzimadzi chimathiridwa mu dzenje la nkhungu lokhala ndi mawonekedwe oyenera gawolo, ndipo chikauma, gawo la chinthu chokhala ndi mawonekedwe enaake, kukula kwake ndi khalidwe lake pamwamba pake limapezeka, lomwe limatchedwa kuponya. Zinthu zitatu zazikulu: alloy, modeling, pour ndi kuuma. Ubwino waukulu: zigawo zovuta zimatha kupangidwa.

2. Kukula kwa njira yopangira zinthu pogwiritsa ntchito chitsulo

Kupanga kunayamba m'zaka za m'ma 1930 pogwiritsa ntchito makina opumira mpweya komanso njira zopangira mchenga wadothi.

Mtundu wa mchenga wa simenti unaonekera mu 1933

Mu 1944, mtundu wa chipolopolo cha mchenga chozizira chophimbidwa ndi utomoni chinawonekera

Nkhungu ya mchenga ya galasi la madzi olimba a CO2 inaonekera mu 1947

Mu 1955, mtundu wa chipolopolo cha mchenga wa resin wophikira kutentha unawonekera.

Mu 1958, nkhungu ya mchenga yosaphika ya furan resin inaonekera.

Mu 1967, nkhungu ya mchenga woyenda ndi simenti inaonekera

Mu 1968, galasi la madzi lokhala ndi chowumitsira chachilengedwe linaonekera

M'zaka 50 zapitazi, njira zatsopano zopangira zinyalala pogwiritsa ntchito njira zakuthupi, monga: maginito pellet molding, vacuum sealing molding method, lost thovu molding, ndi zina zotero. Njira zosiyanasiyana zopangira zinyalala pogwiritsa ntchito zinyalala zachitsulo. Monga centrifugal casting, high pressure casting, low pressure casting, liquid extrusion, ndi zina zotero.

3. Makhalidwe a kuponya

A. Kusinthasintha kwakukulu komanso kusinthasintha. Zinthu zonse zopangidwa ndi zitsulo. Kupangidwa sikungodalira kulemera, kukula ndi mawonekedwe a chinthucho. Kulemera kwake kungakhale kuyambira magalamu angapo mpaka matani mazana ambiri, makulidwe a khoma akhoza kukhala kuyambira 0.3mm mpaka 1m, ndipo mawonekedwe ake akhoza kukhala zigawo zovuta kwambiri.

B. Zipangizo zambiri zopangira ndi zothandizira zomwe zimagwiritsidwa ntchito zimapezeka kwambiri komanso zotsika mtengo, monga zitsulo zosweka ndi mchenga.

C. Zopangira zinthu zoponyera zimatha kupititsa patsogolo kulondola kwa mawonekedwe ndi ubwino wa pamwamba pa zinthu zoponyera pogwiritsa ntchito ukadaulo wapamwamba wopangira zinthu, kotero kuti ziwalozo zitha kudulidwa pang'ono komanso popanda kudula.