例句與用法

1. Abstract : this paper describs the smelting technology of high toughness nodular cast iron qt400 - 18 in cupola . the choice of raw material , chemical composition and the process of nodularization and inoculation is analyzed also . as a result , the reasonable semlting technology is determined to provide reliable gurantee for producing qualified casting
   文摘:本文闡述了在沖天爐熔煉條件下鑄態(tài)高韌性球墨鑄鐵qt400 - 18生產(chǎn)技術(shù)工藝，并對原材料選用、化學成份選擇、球化處理工藝、孕育處理工藝進行了分析研究，確定了合理的熔煉工藝，為生產(chǎn)合格材質(zhì)鑄件提供可靠的保證。