Chandan Steel Plant & production process

Summary

Chandan Steel Limited's manufacturing process begins with high-quality recycled steel, ensuring thorough inspection and radioactivity testing. The steel undergoes melting and refining to remove impurities in induction furnaces and AOD vessels. Emphasis on environmental protection includes exhaust gas filtration and dust extraction. The production line features continuous casting, rolling mills, and forging divisions, all adhering to strict quality checks and employing advanced technology for precision machining. The plant also specializes in seamless tube manufacturing, with a focus on quality, environmental impact, and customer-specific packaging.

Takeaways

• 🚀 Chandan Steel Limited starts the manufacturing process with high-quality recycled steel, ensuring the steel is sourced from certified suppliers and free from hazardous elements.
• 🔍 The company performs a radioactivity test on the stainless steel scrap to confirm its quality before processing.
• 🔥 The steel scrap is melted in a 20-ton induction furnace, followed by refining in a 25-ton argon oxygen decarburization vessel to remove impurities and reduce carbon content.
• 🌿 Environmental protection is a priority, with exhaust gases from the furnace and AOD being filtered and dust extracted to maintain clean air standards.
• 📊 Quality control is rigorous, with melt samples being collected and analyzed at various stages to achieve the desired chemistry.
• 🔩 The liquid steel is cast into various sizes of billets and blooms using a double strand continuous casting machine, ensuring traceability of all heat regards.
• 🔨 The billets are checked for macro structure, and samples are preserved before being transferred to versatile rolling mills for size reduction and shaping.
• 🛠️ Hot-rolled round bars undergo a series of processes including straightening, peeling, drawing, grinding, and polishing in the prybar division.
• 🧪 Post-rolling, sections are annealed, straightened, and subjected to pickling in acid tanks for further processing and quality enhancement.
• 🏭 The forging division operates with the highest capacity under one roof, ensuring strict quality checks and precision monitoring with the latest technology.
• 📏 The final products undergo a series of quality checks, including mechanical and metallic tests, visual inspections, and non-destructive tests to meet specification compliance.
• 🚢 The seamless tube and pipe division is India's only fully integrated plant for manufacturing high-quality stainless steel tubes, emphasizing international standards and environmental impact.

Q & A

What type of raw material does Chandan Steel Limited start with for its manufacturing process?

Chandan Steel Limited starts with high-quality recycled steel, which is thoroughly inspected and sourced from certified suppliers to ensure the removal of hazardous elements.

What tests are conducted to confirm the quality of the stainless steel scrap at Chandan Steel Limited?

Radioactivity tests are carried out to confirm the quality of the stainless steel scrap, ensuring it meets the required standards.

What is the purpose of the 20-ton induction furnace in the manufacturing process at Chandan Steel Limited?

The 20-ton induction furnace is used for melting the stainless steel scrap, which is a crucial step in the manufacturing process.

How does Chandan Steel Limited refine the melted steel to remove impurities?

Refining is done in a 25-ton argon oxygen decarburization vessel, which helps to remove impurities and reduce carbon to the design levels.

What measures are taken to ensure environmental protection during the manufacturing process at Chandan Steel Limited?

Environmental protection is given high importance by processing exhaust gases from the furnace and AOD into the back house, where gases are filtered and dust is extracted.

How does Chandan Steel Limited maintain traceability in the production process?

Traceability is ensured by maintaining all heat regards and collecting and analyzing melt samples at various stages to achieve the desired chemistry.

What type of casting machine does Chandan Steel Limited use to produce various sizes of Willits and blooms?

Chandan Steel Limited uses a six by eleven double strand continuous casting machine for producing various sizes of Willits and blooms.

How are the cast billets checked for quality at Chandan Steel Limited?

The cast billets are checked for macro structure, and samples are preserved to ensure quality throughout the manufacturing process.

What types of products can be produced by the versatile rolling mills at Chandan Steel Limited?

The versatile rolling mills at Chandan Steel Limited are capable of producing a wide range of products, including round, hexagon, square shapes, and sections like angles, flattened channels, and tee sections.

What is the process for quality checks on the finished products at Chandan Steel Limited?

Finished products undergo quality checks for specification compliance, and quality and grades are rechecked using a BMI test facility, mechanical and metallic Rafi tests, followed by visual inspection.

How does Chandan Steel Limited ensure the quality of raw materials received in the forging division?

Every order received in the forging division first goes through Quality Assurance and is monitored with an Enterprise routing program, ensuring the raw materials are suitable for further processing.