لفائف الفولاذ المقاوم للصدأ المدرفلة على البارد

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, تسامح الأبعاد أكثر إحكاما, improved flatness, and higher strength.

It is widely used in construction, معدات المطبخ, مكونات السيارات, precision fabrication, والتصنيع الصناعي.

1. Common Cold Rolling Process for Stainless Steel

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

1. تحضير لفائف المدرفلة على الساخن

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

2. تخليل

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

3. المتداول البارد

The material is passed through rolling mills at room temperature to reduce thickness. هذه العملية:

• Improves dimensional accuracy

• Increases strength through work hardening

• Enhances surface smoothness

Thickness can be precisely controlled from approximately 0.2 مم ل 3.0 مم.

4. الصلب

After cold reduction, annealing is performed to:

• Restore ductility

• Relieve internal stress

• Refine grain structure

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

5. ممر الجلد / Temper Rolling

A light rolling process improves flatness, الانتهاء من السطح, والخصائص الميكانيكية.

6. التشطيب السطحي

Depending on application, the coil may undergo:

• 2ب الانتهاء (سلس, سطح صناعي غير لامع)

• الانتهاء من درجة البكالوريوس (bright reflective surface)

• رقم 4 لمسة نهائية مصقولة

• شعري (هل) ينهي

• تلميع المرآة

2. Common Grades of Cold Rolled Stainless Steel Coil

Cold rolled stainless steel is available in various grades depending on corrosion resistance, قوة, ومتطلبات التطبيق.

الفولاذ الأوستنيتي المقاوم للصدأ (الأكثر شيوعًا)

الفولاذ المقاوم للصدأ الحديدي

الفولاذ المقاوم للصدأ المارتنسيتي

3. Mechanical Property Characteristics

يزيد الدرفلة على البارد من القوة من خلال تصلب الضغط.

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:

• صلب ناعم (full ductility)

• 1/4 صعب

• 1/2 صعب

• كامل بجد

4. Applications of Cold Rolled Stainless Steel Coil

Cold rolled stainless steel coil is commonly used in:

• الديكور المعماري

• لوحات المصاعد

• Kitchen and catering equipment

• الأجزاء الداخلية للسيارات

• Electronic enclosures

• Precision stamped components

• المعدات الطبية

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