Selection scheme of cold-rolled steel strip material testing instrument

Cold-rolled sheet products are widely used in construction, home appliances, vehicles and ships, container manufacturing, electromechanical industries, etc., almost involving all fields of clothing, food, housing and transportation. Cold-rolled steel strip is one of them. Cold-rolled strip steel refers to hot-rolled strip steel and steel plate as raw materials, which are rolled into strip steel and thin plate by cold rolling mill at room temperature, and its mechanical properties and process properties are superior to those of Hot-rolled thin steel sheets are especially popular in the field of home appliance manufacturing. The application of any product has its advantages, so there are corresponding standards to regulate its product quality. In the application of different products, the performance requirements for cold-rolled steel sheets are also different, including appearance gloss, color difference, bending resistance, flexibility, weather resistance, impact resistance and so on.

This article is the selection plan of performance testing instruments for cold-rolled steel plate raw materials, as follows:

Mechanical Properties Testing Instruments - Flexibility
	Modern environment WZJ-II bending machine
	Specification parameters: pressable steel plate, aluminum plate 0-1mm, the weight of the whole machine is 50kg, the overall size is 300mmx300mmx190mm (length x width x height)
	Yonglida QTY-32 Paint Film Cylindrical Bending Tester
	Specification parameters: Shaft size 2/3/4/5/6/8/10/12/16/18/20/25/32mm, test plate thickness not greater than 1.0mm (tin plate), in line with the standard GB/T6742- 86. ISO1519-73, ASIMD522, DIN53152, conforming to the standard GB6742, ISO1519
Laboratory General Equipment - Environment
	Ronghua Instruments HH-2 Constant Temperature Water Bath
	Specification parameters: temperature control range RT+~100℃, intelligent integrated circuit for temperature control, working tank volume 6L, opening size 300*160mm, working tank depth 130mm, working tank made of imported high-quality stainless steel, heating power 600W, overall size 490*250 *190mm, display mode LED
Mechanical Properties Testing Instruments - Destructive
	Pushen CJQ-II paint film impactor (1 meter)
	Specification parameters: impact height 0~100cm, sub-scale 1cm, drop weight 1000g, punch diameter Φ8mm, impact depth 2mm, die base aperture Φ15mm, meet the standard GB/T 1732-1993, overall size 200*200*1200mm, shipping Weight 15kg
Film making and proofing equipment- Film making
	OSP OSP-1.5/400 coating stick L400
	Specification parameters: production process extrusion type, wet film thickness 1.5μm, diameter 10mm, total length 400mm, coating width 300mm, hand grip width 50+50mm, material 304 stainless steel
	Maosen MS-XB320 Laboratory Coater
	Specification parameters: Coating method wire bar coating, coating base size 570*360mm, coating width 320mm, coating stroke 380mm, coating speed 0~20mm/s, total power consumption 48W, overall size 570*370*140mm , the weight of the whole machine is 20Kg, the speed adjustment function is infinitely variable, the host power supply is 220V 50Hz, the appearance color is random, the color is not fixed, and the thickness of the coating film substrate does not exceed 5mm
Raw material performance testing instrument - surface tension
	Fangrui Instrument JCY-1 Contact Angle Tester
	Specification parameters: camera system professional CCD digital camera + high-performance microscope lens, the highest resolution is 1280×1024, the way of taking pictures is single, continuous, the light source is continuously adjustable LED cold light source, the light is uniform, the outline of the captured image is clearer, Higher resolution, contact angle analysis methods θ/2 method, tangent method, automatic calculation or manual (correction) calculation, contact angle measurement range 0~180°, contact angle test resolution 0.01°, solid surface energy equal to one liquid Calculation of surface free energy, drop volume, and solid adhesion by two-liquid method, surface tension test method none, surface tension test range none, surface tension test resolution none, before and after sample stage displacement: 60mm; left and right 35mm; up and down 50mm , the sample table can be adjusted horizontally, the diameter is 90mm, the size of the sample table is 105×120mm, the maximum thickness of the sample is ≤35mm, there is no inclined platform, the sample injection method is manual micro sampler, the overall size is 525*160*470mm, the net weight is 12kg, the power supply voltage is 220V , 50HZ, power 0.2KW
Environmental Testing Equipment - Weatherability
	Aoke YWX/Q-150C Salt Spray Test Chamber
	Specification parameters: salt mist precipitation 1~2ml/80cm²/h, temperature range RT+10~50℃, external dimension 700*1150*930mm, studio size 450*600*400mm, temperature uniformity ≤±2℃, temperature Fluctuation ≤±0.5°C, saturation barrel temperature RT+10~70°C, power 1500W
Physical property testing instrument - roughness
	Peric BC-110A Surface Roughness Meter
	Specification parameters: display mode digital display, measurement parameters Ra, Rz, Rq, Rt, measurement range Ra, Rq: 0.05~10.0μm; Rz, Rt: 0.1~50μm, resolution 0.01, indication error ± (7-10 )%, Indication value variability <12%, Sampling length 0.25mm, 0.80mm, 2.50mm, Evaluation length 1.25mm, 4.0mm, 5.0mm, Stroke length 6mm, Sensor-radius 10μm±1μm, Sensor-Measuring force ≤ 0.016 N, power supply 3.7V lithium-ion battery, external dimension 106*70*24mm, product weight 200g, working temperature: -20℃～40℃; relative humidity: < 90%, no vibration, no corrosive medium around, sensor-test Force change rate ≤ 800N/m, sensor guide pressure ≤ 0.5N
Mechanical Properties Testing Instruments - Adhesion
	Pushen HGQ single-edged scribe
	Specification parameters: the number of teeth is 11 teeth, the distance between teeth is 1mm, 2mm, the handle is made of hardwood, and the application standard GB/T 9286, ASTM D 3359