公开(公告)号：US5512523A

公开(公告)日：1996-04-30

申请号：US372835

申请日：1995-01-13

申请人： Yasushi Ono ,  Satoshi Sakamoto ,  Yutaka Murata ,  Tetsuo Kaji ,  Yasuhiko Endo

发明人： Yasushi Ono ,  Satoshi Sakamoto ,  Yutaka Murata ,  Tetsuo Kaji ,  Yasuhiko Endo

IPC分类号： C04B35/626 ,  C04B35/66

CPC分类号： C04B35/626

摘要： A monolithic refractory powder mixture containing from 2 to 3 wt % of spheroidized refractory particles having a mean particle size of at most 30 .mu.m of at least one member selected from the group consisting of alumina cement, alumina, titania, bauxite, diaspore, mullite, aluminous shale, chamotte, pyrophyllite, sillimanite, andrewsite, silica rock, chromite, spinel, magnesia, zirconia, zircon, chromia, silicon nitride, aluminum nitride, silicon carbide, boron carbide, zirconium boride and titanium boride, and having a cone flow value of at least 180 mm when a refractory mixture having the powder mixture kneaded by an addition of 6 parts by weight of water per 100 parts by weight of the powder mixture, is cast into a cone-shaped mold with a dimension of 70 mm.o slashed.-100 mm.o slashed..times.60 mm and left to stand for 60 seconds without exerting vibration after removing the cone-shaped mold.

摘要翻译： 一种整体耐火粉末混合物，其含有2至3重量％的平均粒径至多为30μm的至少一种选自氧化铝水泥，氧化铝，二氧化钛，铝土矿，矾土，莫来石的至少一种的球状耐火颗粒 硅酸盐岩，铬铁矿，尖晶石，氧化镁，氧化锆，锆石，氧化铬，氮化硅，氮化铝，碳化硅，碳化硼，硼化锆和硼化钛，并具有锥形流 当通过向每100重量份粉末混合物中加入6重量份的水捏合具有粉末混合物的耐火混合物时，其值至少为180mm，被浇铸成尺寸为70mm-1的锥形模具， 100毫米×60毫米，放置60秒，除去锥形模后不发生振动。

公开(公告)号：US4555948A

公开(公告)日：1985-12-03

申请号：US541856

申请日：1983-10-14

申请人： Hirofumi Miyamoto ,  Nobuaki Kaitatsu ,  Junichi Sugitani ,  Yasumaru Taniguchi ,  Tetsuo Kaji

发明人： Hirofumi Miyamoto ,  Nobuaki Kaitatsu ,  Junichi Sugitani ,  Yasumaru Taniguchi ,  Tetsuo Kaji

IPC分类号： G01N29/11 ,  G01N29/48 ,  G01N29/04

CPC分类号： G01N29/11 ,  G01N29/48 ,  G01N2291/044 ,  G01N2291/2634 ,  G01N2291/2675

摘要： A method of ultrasonic flaw detection of a pipe comprises comparing ultrasonic waves passing through a test piece portion with the arithmetic means of ultrasonic waves passing through portions adjacent each side of the test portion. The comparison is made around the entire periphery of a pipe, for example, an austenic heat resisting cast steel pipe used as a hydrogen manufacturing reformer tube. This method is free from adverse influence of macrostructures unevenly distributed in the peripheral direction of the pipe, and enables a quantitative grasp of flaws in a base material and a weld of the pipe.

摘要翻译： 一种管道超声波探伤的方法，包括将通过试片部分的超声波与穿过测试部分的每一侧的部分的超声波的算术装置进行比较。 比较在管的整个周边，例如用作制氢重整管的奥氏体耐热铸钢管。 该方法不受管道周向不均匀分布的宏观结构的不利影响，能够定量地掌握管材的基材和焊缝的缺陷。