上海交通大学学报(英文版)
上海交通大學學報(英文版)
상해교통대학학보(영문판)
JOURNAL OF SHANGHAL JIAOTONG UNIVERSITY
2002年
1期
80-83
,共4页
EMF changes%cold drawing%heating treatment%type K heavy-gauge thermocouple
The electromotive force (EMF) changes in type K heavy-gauge sheathed thermocouple cables was investigated. To cope with this discrepancy owing to EMF steep reduction and understand the difference between type K heavy-gauge sheathed thermocouple cables and small ones, the affects of EMF from sheath pipe, drawing times, annealing temperature, annealing time and annealing way were mainly studied and appropriately analyzed. The results show the change in the thermal EMF is related with the residual stress and crystal defects, which are imparted by cold work during manufacture. The affects of cold work can be removed by annealing. Finally, a feasible way of fabricating heavy-gauge sheathed thermocouples was suggested according to practical situation.
