Temperature of Iron and Steel daring Recalescence. 

 Fiff. 19. 



187 





































































































































1 























































y 











/■ 



r 



































1 







i 





J 



? 

















,- 



1 



































/ 



' 



*> 























4^ 



/ 





































/ 



2 









3 























































v 



3 





















/ 



y 









































7/ 



/' 































































2J 



/ 













^ 













































































































































JSfiricinken 



ironl 







%C. 



/- 



■IS 



o 































































Time. 



The abscissae here signify periods of heating and cooling. ; 

 the ordinates in the lower curve loop signify temperature, 

 and in the upper curve loop the ordinates represent lengths. 



Out of the respective length and temperature curves, the 

 longitudinal changes of the different specimens are calculated 

 for every interval of 100°, the values thus found being given 

 in Tables I. -III. 



1000 



9C0 



800 



700 



600 



500 



400 



300 



200 



100 







-100 



—200 



Table I. — Sandviken Wire, 0*9 per cent. C« 





Changes of Length during 

 Heating. 



• 

 Changes of Length during 

 Cooling. 



o o 



0-100 



o-oono 00110 





100-200 



000225-0-00110=0-00115 





200-300 



0-00340 - 000225=0001 15 





300-400 



0-00465-0-00340=000125 



0-00470 - 0-00340 = 0-001 30 



400-500 



0-00600 - 0-00465=0-00135 



000610-000470=000140 



500-600 



0-00750 - 000600 = 00150 



0-00765-0-00610=0-00155 



600-700 



000910-0-00750=0-00160 



00905 -000765=0 00140 



700-500 



001090-000910=0-00180 



0-01 100 -0-00905 =0-001 95 



