Carbon Raiser Absorption Rate Guide

Absorption rate defines casting efficiency. High-temperature graphitized carbon raiser (C≥99.5%, S≤0.03%) achieves 95%+ absorption for premium castings. Mid-temperature graphitized (C≥98%) reaches 85-90%, while semi-graphitized suits budget projects (80-85%).

Critical Factors:

1. Granularity: 2.5-5mm for 1-3T furnaces

2. Temperature: Optimize at 1450-1500℃

3. Process: Add in batches to furnace bottom, remove slag first

Pro Tip: Pre-dry at 200℃ for 2hrs to boost efficiency. Contact: +86-18953362119