语言
总经理
Mehdi Malek 是 Arsam Metal 的总经理。他负责公司的供应网络和技术工作，每一批货按什么规格、带哪些文件、哪天发运，最终由他拍板。他在博客上写铸造厂和钢厂每天都会问的问题：用哪种合金、什么粒度、哪些证书是真正需要的。
Recarburizer choice for grey iron, ductile iron and steel: fixed carbon, sulphur, nitrogen, recovery and the cost per kg of dissolved carbon. When GPC pays.
COA, MTC 3.1, CBAM emissions data, A.TR and EUR.1: which document applies to which ferroalloy or SiC shipment into the EU, and what to send with your RFQ.
Metallurgical SiC brings both Si and C and keeps nucleation alive longer than FeSi. How much FeSi and carbon it replaces, when to add it, and the break-even price.
Si Metal 441 (Fe≤0.4%, Ca≤0.1%) vs 553 (Fe≤0.5%, Ca≤0.3%): Al-Si casting intermetallics, Rochow-process trace-element control, and the real grade-cost call.
Choosing between high-carbon ferromanganese and ferrosilicomanganese: deoxidation, desulfurization, dosage math and EAF bath chemistry. Mn ≥65% spec, per-ton cost difference.
The 10-minute critical window from nodularization to pour. Mg fade physics, FeSiMg particle size logic, and numbers from a Turkish foundry case.
