وردەکاری (التفاصيل مع الوصف الوظيفي)
Role Description: LRF Melter
The LRF Melter is responsible for the secondary metallurgy process. After molten steel is transferred from the Induction Furnace, the LRF Melter uses electric arcs and argon stirring to refine the steel, adjust alloying elements, and remove impurities. This role is vital for producing high-grade steel that meets international quality standards.
Qualifications
- 3–6 years of experience as an LRF Operator or Melter in a steel melting shop.
- Metallurgical Knowledge: Deep understanding of steel chemistry, ferro-alloy additions (FeMn, FeSi, Silico-Manganese), and deoxidation.
- Technical Skills: Experience operating electrode control systems (AC/DC) and argon gas purging systems.
- Problem Solving: Ability to calculate alloy recovery rates and adjust "heats" that are off-specification.
- Precision: Must be able to reach target temperatures and chemistry within a very tight timeframe.
- Willingness to work in shifts.
Language
- Kurdish (required)
- English (is plus)
Key Responsibilities
- Refining Operations: Operate the electrode arms to heat the liquid steel to the exact casting temperature.
- Chemical Adjustment: Analyze lab reports and add precise amounts of ferro-alloys and carbon to reach the required grade (e.g., Grade 60, 3SP/4SP).
- Argon Purging: Manage the argon gas stirring flow through the bottom porous plug to ensure chemical and thermal homogeneity (mixing the steel).
- Desulphurization & Deoxidation: Add lime, fluorspar, or other fluxes to remove sulfur and impurities from the steel.
- Electrode Management: Monitor electrode consumption and assist in adding/slipping new electrodes as needed.
- Slag Management: Maintain a "synthetic slag" layer to protect the steel from oxidation and to trap impurities.
- Sampling: Take accurate "lollipop" samples and Celox (oxygen/temperature) readings at specific intervals.
- Coordination: Act as the bridge between the Induction Furnace (receiving steel) and the CCM (sending steel).
- Data Logging: Keep detailed records of alloy consumption, power usage (kWh), and final steel chemistry.