The junction technique of composite plastic pipe was researched, and the application of electrofusion welding in junction technique was discussed in detail.
對復合塑料管的連接技術進行了研究,尤其對連接技術中電熔熔接的應用做了詳細的論述,提出了電熔熔接時恒壓及動態(tài)過程控制的方法和控制的參數,推導出了電熔熔接電壓的計算公式,有效解決了接頭連接施工中存在的問題。
The microstructure feature of the copper wire and the melted bead and trace in several condations of simulated test were analyzed in this paper.
用SEM觀察分析了在各種模擬實驗條件下銅導線及其熔珠熔痕的幾種顯微組織結構特征,結果表明:單股粗銅導線的火燒、二次短路熔珠熔痕與一次短路、過負荷、接觸不良造成的熔珠熔痕其顯微結構有明顯不同,可為火災原因的鑒定提供參考依據。
The results show that it is certain that the fire disaster cause is the first short circuit when there are branch crystal and columnar crystal in the microstructure of aluminium wire melted bead and trace in the fire disaster.
用掃描電鏡觀察分析了各種實驗室模擬火災條件下鋁導線及其熔珠熔痕的顯微組織結構特征,并和火災現場取樣的組織結構相比較,結果表明:當火災現場取樣結果顯微結構出現樹枝晶和柱狀晶時,能基本判定火災原因為導線一次短路所致;但當取樣結果顯微結構僅主要出現大塊再結晶體時,則需根據現場情況具體分析。
The weld penetration extent was described by 3D information on the surface depression of full-penetrated weldpool.
利用所建立的TIG(鎢極惰性氣體保護電弧焊)焊接熔池形態(tài)瞬時行為的數學模型,對準穩(wěn)態(tài)情況下當焊接工藝參數發(fā)生突變時熔透熔池表面下塌變形的動態(tài)演變過程進行了數值模擬,得出了指導焊接熔透控制系統設計的基礎數據。
Practice of Jinfeng Copper Co.Ltd. both side-blown bath smelting production;
金峰銅業(yè)有限公司雙側吹熔池熔煉的生產實踐
The paper describes the features of bath smelting of lead sulfide concentrate and structural characteristics of the oxygen side-blown direct lead smelting furnace.
論述了硫化鉛精礦熔池熔煉的特點以及氧氣側吹直接煉鉛爐的結構特征。
The volatility of antimony and tin was compared and, the feasibility, mechanism and process characteristic of treating low-grade antimony ore by bath smelting-continuous fuming process were discussed as well.
比較了銻、錫的熔煉揮發(fā)性能，論述采用熔池熔煉－連續(xù)煙化法工藝處理低品位銻礦的可能性、反應機理及工藝特點。
This paper present a new fuse blowing method which blow fuse exactly and effectively based on the traditional method.
通過尋找實際測量結果和對應熔斷熔絲之間的規(guī)律,將數量級為2n的熔絲熔斷分析縮減至n次熔絲熔斷分析。