Abstract
Previously a new high grade nickel base corrosion resistance alloy to hydrochloric acid which has been developed in Technical Research Laboratory Hitachi Shipbuilding & Engineering Co., Ltd. was reported. This new alloy is named HZ Alloy CL consisting of Mo 20-30, W about 3, Fe about 1, Cu about 1, Ti about 0.2 wt % and Ni balance, has a excellent corrosion resistance property to hydrochloric acid, good weldability and ductility. In this study, a casting experiment was carried out on this new alloy. Experimental results were as follows: 1. The beinning temperature of solidification of the new alloy is 1,459°C and its finishing temperature is 1,443°C. 2. The fludity of the new alloy is inferior to that of Hastelloy C which has good castability, but by selecting proper casting temperatares, good casting products can be obtained. 3. Molder’s rule for wood pattern is 24/1,000. 4. A casting impellor of the new alloy was producted with no casting defects. The impellor showed excellent corrosion resistance to hydrochloric acid in practical use.
