Kumparan Baja Tahan Karat Canai Dingin

Cold rolled stainless steel coil is produced through cold reduction of hot rolled stainless steel, followed by annealing and surface finishing processes. Compared with hot rolled material, cold rolled stainless steel offers better surface quality, tighter dimensional tolerance, improved flatness, dan kekuatan yang lebih tinggi.

It is widely used in construction, perlengkapan dapur, komponen otomotif, fabrikasi presisi, dan manufaktur industri.

1. Common Cold Rolling Process for Stainless Steel

The production of cold rolled stainless steel coil typically involves the following stages:

1. Persiapan Gulungan Canai Panas

Hot rolled stainless steel coils (usually No.1 finish) are used as raw material. The surface is cleaned and prepared before cold reduction.

2. Pengawetan

The oxide scale formed during hot rolling is removed using acid pickling to ensure a clean surface before cold rolling.

3. Penggulungan Dingin

The material is passed through rolling mills at room temperature to reduce thickness. Proses ini:

• Improves dimensional accuracy

• Increases strength through work hardening

• Enhances surface smoothness

Thickness can be precisely controlled from approximately 0.2 mm sampai 3.0 mm.

4. Anil

After cold reduction, annealing is performed to:

• Restore ductility

• Relieve internal stress

• Refine grain structure

Annealing methods include continuous annealing and bright annealing (BA).

5. Tiket Kulit / Temper Rolling

A light rolling process improves flatness, permukaan akhir, dan sifat mekanik.

6. Penyelesaian Permukaan

Depending on application, the coil may undergo:

• 2B selesai (mulus, permukaan industri matte)

• BA selesai (bright reflective surface)

• No.4 hasil akhir yang disikat

• Garis rambut (Hl) menyelesaikan

• Pemolesan cermin

2. Common Grades of Cold Rolled Stainless Steel Coil

Cold rolled stainless steel is available in various grades depending on corrosion resistance, kekuatan, dan persyaratan aplikasi.

Baja Tahan Karat Austenitik (Paling Umum)

Baja Tahan Karat Feritik

Baja Tahan Karat Martensit

3. Mechanical Property Characteristics

Pengerolan dingin meningkatkan kekuatan melalui pengerasan regangan.

Typical improvements include:

• Higher yield strength compared to hot rolled material

• Improved tensile strength

• Better surface flatness

• More precise thickness tolerance

Hardness and strength vary depending on temper condition:

• Soft annealed (full ductility)

• 1/4 keras

• 1/2 keras

• Full hard

4. Applications of Cold Rolled Stainless Steel Coil

Cold rolled stainless steel coil is commonly used in:

• Dekorasi arsitektur

• Panel lift

• Kitchen and catering equipment

• Bagian interior otomotif

• Electronic enclosures

• Precision stamped components

• Peralatan medis

Its combination of smooth surface, presisi dimensi, and corrosion resistance makes it suitable for both structural and decorative purposes.