Miyata O
Shika Rikogaku Zasshi. 1976 Sep;17(39):222-30.
In order to compare the deformation of the castings in the firing process with the results of the previous paper, 1/10-tapered ring type thimble crowns were prepared using nine Au-Pt-Pd ternary alloys of the same composition as in the previous paper. The deformation in the firing process was determined by the shoulder gap change measurement. Conclusions are summarized as follows. 1) The correlation between the thermal expansion hysteresis H and the shoulder gap change K is highly significant (r= 0.96, phie=7),and it can be represented by the following equation: K(mm)=0.15 + 1.22 H(%) 2) The gap change increases with increase of Pt content. 3) Most of the deformation occurs in degassing treatment, while in the other firing process the deformation scarcely occurs.
为了将铸件在焙烧过程中的变形与前文的结果进行比较，使用了与前文相同成分的九种金-铂-钯三元合金制备了1/10锥形环形套筒冠。焙烧过程中的变形通过肩部间隙变化测量来确定。结论总结如下：1）热膨胀滞后H与肩部间隙变化K之间的相关性非常显著（r = 0.96，phi e = 7），并且可以由以下方程表示：K（mm）= 0.15 + 1.22H（%） 2）间隙变化随着铂含量的增加而增加。3）大部分变形发生在脱气处理过程中，而在其他焙烧过程中几乎不发生变形。
