说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
您的位置:首页 -> 词典 -> 内壁堆焊
1)  cladding of valve wall
内壁堆焊
2)  head inner wall surfacing
封头内壁堆焊
3)  hardfacing
堆焊
1.
Wear resistant impact hardfacing flux-cored wire used in tool manufacture of shield machine;
盾构机刀具制造用耐磨耐冲击堆焊药芯焊丝的研究
2.
Effect of alloy elements and heat treatment technology on microstructure and property of hardfacing metal for cold scissors;
冷剪刃堆焊金属的组织与性能
3.
Field mobile welding machine for drilling tool hardfacing;
野外可移动式钻具耐磨带堆焊专机
4)  surfacing [英]['sə:fis]  [美]['sɝfɪs]
堆焊
1.
Effect of welding material component on high frequency surfacing process;
焊料成分对高频堆焊性能的影响
2.
Ultrasonic signal character and quality evaluation of Cu/steel surfacing weld;
铜钢堆焊接头的超声信号特征及质量评价
5)  surfacing welding
堆焊
1.
Development of special welding machine for inner surfacing welding of high-temperature cylinder;
高温圆筒内壁堆焊焊接专机的研制
2.
Automatic surfacing welding method with equal thickness for circle plane;
一种圆环面等厚自动堆焊方法
3.
Research on new technology of repairing rails tracks by surfacing welding;
铁路在线伤损钢轨堆焊修复新技术研究
6)  build-up welding
堆焊
1.
The process of Ni-alloy build-up welding to improve the valve's sealing face was introduced.
详细介绍了一种改善旋转止回阀密封面性能的镍基堆焊工艺。
2.
Combined with specific experiences, it carries out chemical analysis for base metal of sprocket in drive gear, checks surface heat processing state, its welding capacity is also analyzed, and introduces specific build-up welding technology, the effect is good through test.
结合具体的工程实践,对提升机传动机构中链轮的母材进行了化学分析,对表面热处理状态进行了检测,并对堆焊齿形的可焊性作了分析,介绍了具体的堆焊工艺,经试用,效果良好。
3.
Withdrawal roll and wrapper rolls were strengthened by build-up welding against their short- life,using PYY125 tube welding wire+SSD welding flux as build-up welding materials.
针对夹送辊和助卷辊的使用寿命低的现状 ,选择PYY 12 5管状焊丝 +SSD焊剂作为堆焊材料 ,采用合适的堆焊工艺对夹送辊和助卷辊进行堆焊 ,经现场使用 ,其过钢量分别达到 2 6 。
补充资料:-戊内酯、3-甲基丁内酯、咖吗-戊内酯
CAS: 108-29-2
分子式: C5H8O2
分子质量: 100.12
沸点: 207-208℃
熔点: -31-208℃

中文名称: 4-戊内酯、γ-戊内酯、3-甲基丁内酯、咖吗-戊内酯

英文名称: dihydro-5-methyl-2(3H)-Furanone、dihydro-5-methyl-2(3h)-furanon、4-hydroxypentanoic acid lactone、4-hydroxyvaleric acid lactone、4-methyl-gamma-butyrolactone、gamma-methyl-gamma-butyrolactone、gamma-valerolakton

性质描述: 无色至微黄色液体。凝固点-31℃,沸点205-206.5℃,83-84℃(1.73kPa),相对密度(25/25℃)1.0578,折光率(nD25)1.4301。能与水、许多有机溶剂、树脂和蜡等混溶。10%水溶液的pH为4.2。

生产方法: 由不饱和羧酸通过闭环反应来合成,例如乙酰乙酸与硫酸共热,或乙酰丙酸在镍、铜等催化剂存在下加氢。

用途: γ-戊内酯有较强的反应能力,可用作树脂溶剂及各种有关化合物的中间体。也用作润滑剂、增塑剂、非离子型表面活性剂的胶凝剂、加铅汽油的内酯类添加剂,用于纤维素酯和合成纤维的染色。γ-戊内酯具有香兰素和椰子香味。我国GB2760-86规定为允许使用的食用香料。主要用以配制桃、椰子、香草等型香精。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条