Patent ID: 9731348
Date: 2017-08-15
CPC Classifications: B22D,B23K,C23C

Claim:
1. A method of manufacturing a shot sleeve for high pressure die casting of aluminum silicon alloys containing 0.40% max Fe, having an erosion resistant material at an impingement site, the method comprising: providing a high pressure die casting shot sleeve constructed of an iron-based material, the shot sleeve having a length, the shot sleeve further including a pouring hole extending from an outer surface through to an inner surface and an impingement site opposite the pouring hole on the inner surface of the shot sleeve; and replacing the impingement site with an erosion resistant material that prevents erosion from the aluminum silicon alloys through insolubility in molten aluminum; wherein the erosion resistant material comprises at least 80% of any one of the following elements: titanium, tungsten, molybdenum, ruthenium, tantalum, niobium, chromium vanadium, zirconium, hafnium, rhenium, or boron.