Channel for venting the foundry sand moulds and method for venting the foundry sand moulds

摘要

the object of the application is the odpowietrzaju0105cy casting sand and foundry sand odpowietrzenia forms, applicable in odlewnictwie in manufacture of cast iron alloy and non-ferrous metal alloys of medium and large size.the declaration also includes venting of sand casting method, characterized by that, during the performance of iron form sandstorm, formed in the form of at least one unilaterally open channel (4) odpowietrzaju0105cy which does not contact directly with wnu0119ku0105 fo companies (2), then prepared a niche form (2) is flooded alloy iron / feet of non-ferrous metalsand fill the recesses form (2) air and generated during the process of flooding the recess forms (2) and the heating of formierskiej after flooding, gaza was outside forms through the recess forms (2) and a thin layer of x, located between unilaterally otwart a channel (4) and the surface of the recess forms (2),they are going to the empty channel unilaterally open (4) and with him was outside forms.