冷間圧延ステンレス鋼コイル

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, and higher strength.

It is widely used in construction, キッチン用品, 自動車部品, 精密加工, および工業生産.

1. Common Cold Rolling Process for Stainless Steel

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

1. Hot Rolled Coil Preparation

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

2. 酸洗い

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

3. 冷間圧延

The material is passed through rolling mills at room temperature to reduce thickness. このプロセス:

• Improves dimensional accuracy

• 加工硬化により強度が上がります

• Enhances surface smoothness

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

4. アニーリング

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. スキンパス / Temper Rolling

A light rolling process improves flatness, 表面仕上げ, および機械的特性.

6. 表面仕上げ

Depending on application, the coil may undergo:

• 2B仕上げ (スムーズ, マットな工業用表面)

• BA仕上げ (bright reflective surface)

• No.4 ブラッシュ仕上げ

• ヘアライン (HL) 仕上げる

• 鏡面研磨

2. Common Grades of Cold Rolled Stainless Steel Coil

Cold rolled stainless steel is available in various grades depending on corrosion resistance, 強さ, および申請要件.

オーステナイト系ステンレス鋼 (Most Common)

フェライト系ステンレス鋼

マルテンサイト系ステンレス鋼

3. Mechanical Property Characteristics

冷間圧延によりひずみ硬化により強度が向上.

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:

• 軟質焼鈍 (full ductility)

• 1/4 難しい

• 1/2 難しい

• フルハード

4. Applications of Cold Rolled Stainless Steel Coil

Cold rolled stainless steel coil is commonly used in:

• 建築装飾

• エレベーターパネル

• Kitchen and catering equipment

• 自動車内装部品

• Electronic enclosures

• Precision stamped components

• 医療機器

Its combination of smooth surface, 寸法精度, and corrosion resistance makes it suitable for both structural and decorative purposes.