Select a molten iron quality management device: from pre-furnace testing needs to model selection

Summarize content

On 09/11/2026, Phoenix Net published an analysis on selecting liquid iron quality control devices for foundries: start with pre-furnace inspection goals, match the iron type to the measurement range, then configure based on furnace location and operating conditions.

• The time from production to pouring is only a few minutes; the foundry's challenge isn't whether to inspect, but whether usable data can be obtained before pouring.
• Two device groups with different locations: pre-furnace thermal analysis provides results within 2-3 minutes, while spectroscopy and chemical analysis serve for full quantification; in practice, many workshops run both parallel fast checks before the furnace and confirmatory tests in the lab.
• Purchase requires confirmation of applicable limits: suitable for gray iron, ductile iron, and common cast irons; not intended to replace molten steel or high-alloy cast irons. CYY series measurement ranges are approximately CE 2,50-4,80%, C 2,30-4,20%, Si 0,60-3,80%.
• Model differences lie in installation and operation: CYY-LK3 uses an Omron controller with isolation and noise suppression transformers; CYY-LK4 is a localized configuration with a 15-inch screen, tempered glass cover for cast iron splash resistance, and budget-friendly design; CYY-LK5 features a 17-inch touchscreen with automatic analysis and data logging, plus two USB ports; CYY-LK7 is the export version with an English interface, measuring CEL, C%, Si%, Mn%, and carbon growth ratio, and CE certified.
• Four supplier evaluation criteria: clear product positioning and disclosure limits, a sufficient model range to meet needs, technical support and spare parts capability, plus company credentials (established 2014, CE certification for carbon-silicon analysis lines).
• Three often-overlooked selection criteria: batch-based data storage and retrieval, operator-friendly intuitiveness for new users, and clear differentiation between composition analyzers and molten metal temperature guns.