Every metal casting is a story of liquid metal freezing into solid shape, and like any story, it can go off-script. Porosity, shrinkage, inclusions, cold shuts — these words appear on foundry reports and in RFQ discussions, and they carry real cost when they appear in your parts. This article is a plain-language guide to […]
Ask ten buyers what “good surface finish” means on a casting, and you will get ten different answers: “smooth,” “like machined,” “no pits,” “better than sand casting,” and “Ra 3.2 everywhere.” Most of those answers cost money—usually more than they need to. Surface finish is one of the most over-specified requirements in casting procurement and
Investment Casting Surface Finish: What Ra Values to Expect & How to Specify Them Читать далее »
Not every project needs 50,000 pieces. Equipment rebuilders need 30 replacement yokes for a legacy machine. Racing teams need 200 brackets in 4140. Machine builders testing a new design need 10 sets of housings before committing to production tooling. In these situations, the usual manufacturing menu looks unattractive: CNC machining every part from solid wastes
