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Tensile test of large cold-rolled steel plate

Test scheme: Tensile test of large cold-rolled steel plate

Test equipment: Jinan New Times Trial Instrument Co., Ltd. CMT-4304

Unit for inspection: An enterprise producing large cold-rolled steel plates

Raw gauge distance L0: 100 mm

Calculation standard: GB 228.1-2010

Gage length of extensometer: 50 mm

Test time: 665.766724 s

Test speed: 5 mm / min

Test fixture: 3T rotating wedge-shaped stretching

Extensometer Model: YYU / 25-50

Test date: 2016-01-08 15:52:04

Width: 20.12 mm

Thickness: 1.18 mm

Finding parameters: tensile strength (Rm), elongation at break (At)

Note: The following test data is for reference only

The customer is a high-tech enterprise specializing in the production of cold-rolled sheets and hot-dip galvanized coils for downstream products. Cold rolling is based on hot-rolled coils, which are rolled at normal temperature below the recrystallization temperature. Cold-rolled steel plates are steel plates produced through the cold rolling process, referred to as cold plates. Cold rolling is a method in which a steel sheet is further thinned to a target thickness below a recrystallization temperature at room temperature. Compared with hot-rolled steel, cold-rolled steel is more accurate in thickness and has a smooth and beautiful surface. Cold-rolled strip is widely used, such as automobile manufacturing, electrical products, rolling stock, aviation, precision instruments, canned food, etc. Cold-rolled sheet steel is an abbreviation for common carbon structural steel cold-rolled sheet, also known as cold-rolled sheet, commonly known as cold-rolled sheet, which is sometimes mistakenly written as cold-rolled sheet. The cold plate is a hot-rolled steel strip of ordinary carbon structural steel, which is further cold-rolled into a steel plate with a thickness of less than 4mm. Because rolling at room temperature does not produce scale, the cold plate has good surface quality and high dimensional accuracy. In addition to annealing treatment, its mechanical properties and process performance are better than those of hot-rolled thin steel plates. In many fields, especially In the field of home appliance manufacturing, it has gradually replaced hot-rolled steel sheets. This customer commissioned our company to use our universal tensile testing machine to perform tensile tests on cold-rolled steel sheets. The relevant data obtained from the tests are as follows:

Updated: 2019-11-6
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