The rolls of hot rolling mill or cold cooling mill act key role in the rolling process. The shape (convexity, concavity, taper,etc) of the roll can impact the quality of final products. In the rolling process along the length of the roll, the distance between the upper and lower rolls should be equal at all points, i.e., to maintain uniformity of the roll gap, so that final sheet and strip products are high quality. The abrasion of rolls in actual work or after grinding shall be in acceptable amount to meet the design parameters. At present, there are 6 way to inspect the roll shape.
1. Micrometer
the micrometer is simple and inexpensive tool; but its structure is large, the measurement range is small, measurement parameter is single, low precision, it is not easy to find out the maximum diameter and minimum cross-section point;
2. Multi-parameter roll measuring meter
this roll meter can be accurate, fast measurement of plate and strip steel roll a variety of parameters (convexity, concavity, taper, roundness, diameter, etc.), but the measurement range is small and that can＊t measure continuously;
3. Saddle-type roll diameter measuring instrument
this instrument is wide measuring range and can continuously measure in the axis direction; but can not store the measurement data.
4. CNC Roll grinder with roll-type measuring system
This kind of CNC roll grinder can perform high precision, semi-automatic measurement process, with data processing, storage and display, print roll curve and other functions; but the grinder can not be moved, inconvenient to use as a measuring tool, and this grinder price is higher.
5. Portable high-precision roll shape meter
This meter is measurement accuracy of ㊣ 0.005mm, with data acquisition and processing, storage and display, print the roll shape curve and other functions; the curve data can be exported to computer for display.
6. Intelligent roll shape instrument
Intelligent high-precision roll shape instrument can direct display roll curve, its measurement error is less than 0.003mm, the system equipped a single sensor is easy to operate; the measurement curve can be directly displayed on the instrument screen.
