The junction technique of composite plastic pipe was researched, and the application of electrofusion welding in junction technique was discussed in detail.
對(duì)復(fù)合塑料管的連接技術(shù)進(jìn)行了研究,尤其對(duì)連接技術(shù)中電熔熔接的應(yīng)用做了詳細(xì)的論述,提出了電熔熔接時(shí)恒壓及動(dòng)態(tài)過(guò)程控制的方法和控制的參數(shù),推導(dǎo)出了電熔熔接電壓的計(jì)算公式,有效解決了接頭連接施工中存在的問(wèn)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(shí)驗(yàn)條件下銅導(dǎo)線及其熔珠熔痕的幾種顯微組織結(jié)構(gòu)特征,結(jié)果表明:單股粗銅導(dǎo)線的火燒、二次短路熔珠熔痕與一次短路、過(guò)負(fù)荷、接觸不良造成的熔珠熔痕其顯微結(jié)構(gòu)有明顯不同,可為火災(zāi)原因的鑒定提供參考依據(jù)。
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(shí)驗(yàn)室模擬火災(zāi)條件下鋁導(dǎo)線及其熔珠熔痕的顯微組織結(jié)構(gòu)特征,并和火災(zāi)現(xiàn)場(chǎng)取樣的組織結(jié)構(gòu)相比較,結(jié)果表明:當(dāng)火災(zāi)現(xiàn)場(chǎng)取樣結(jié)果顯微結(jié)構(gòu)出現(xiàn)樹(shù)枝晶和柱狀晶時(shí),能基本判定火災(zāi)原因?yàn)閷?dǎo)線一次短路所致;但當(dāng)取樣結(jié)果顯微結(jié)構(gòu)僅主要出現(xiàn)大塊再結(jié)晶體時(shí),則需根據(jù)現(xiàn)場(chǎng)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(hù)電弧焊)焊接熔池形態(tài)瞬時(shí)行為的數(shù)學(xué)模型,對(duì)準(zhǔn)穩(wěn)態(tài)情況下當(dāng)焊接工藝參數(shù)發(fā)生突變時(shí)熔透熔池表面下塌變形的動(dòng)態(tài)演變過(guò)程進(jìn)行了數(shù)值模擬,得出了指導(dǎo)焊接熔透控制系統(tǒng)設(shè)計(jì)的基礎(chǔ)數(shù)據(jù)。
Practice of Jinfeng Copper Co.Ltd. both side-blown bath smelting production;
金峰銅業(yè)有限公司雙側(cè)吹熔池熔煉的生產(chǎn)實(shí)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(diǎn)以及氧氣側(cè)吹直接煉鉛爐的結(jié)構(gòu)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(yīng)機(jī)理及工藝特點(diǎn)。
This paper present a new fuse blowing method which blow fuse exactly and effectively based on the traditional method.
通過(guò)尋找實(shí)際測(cè)量結(jié)果和對(duì)應(yīng)熔斷熔絲之間的規(guī)律,將數(shù)量級(jí)為2n的熔絲熔斷分析縮減至n次熔絲熔斷分析。