Let's take a look at how the caliper is tested online in harsh environments!

High-speed, high-temperature, high-temperature, high-temperature rolling materials are often the true portrayal of round steel hot rolling, and now round steel is more and more automated in production, and round steel wire diameter detection method must also be transferred from manual inspection to automatic Detection.

Hot-rolled round steel online caliper system needs to solve problems such as dynamic measurement, high temperature measurement, on-line measurement, and harsh environment. Therefore, at least the above problems need to be solved in the development of caliper.

1. On-line inspection purpose of rolling steel production line

1.1. To achieve dynamic real-time measurement, non-contact measurement of products one by one in the process of rolling, to find problems in time, solve problems, reduce scrap rate, and improve the rate of finished products.

1.2. Instead of the traditional manual measurement method, the transition from the original random random inspection to the 100% full inspection not only improves the quality of the product but also reduces the labor intensity of the workers.

1.3 is the fundamental guarantee for achieving negative tolerance rolling, which is widely used internationally, which can save raw materials and improve economic benefits.

2, hot rolled round steel testing

The bar caliper adopts photoelectric measuring system and fixed eight sets of probes to measure the geometrical dimensions of the outer contour of the passing material in real time.

The measurement results are transmitted to the host computer in the main operation room through the optical cable, and are displayed synchronously on the liquid crystal display and the on-site LED screen.

The measurement data can be saved and can be queried. When the error is exceeded, the alarm can be made. The historical data can be stored for more than one year, and the query can be accurate to the second.

It can accurately and accurately reflect the dimensional changes of the measured rolling stock, and can detect various common defects (ears, misalignments, etc.) and out-of-tolerance alarms generated during the rolling process, and can judge the ear according to the type and continuity of the out-of-tolerance data. Defect types and defect positions of sub-", "wrong roll", "missing meat", etc.

According to the effective inspection of the rolling mill and the adjustment of the roll, and clearly indicate the location of the non-conforming product, guide the selection of non-conforming products, the measurement data can be statistically analyzed.

3, automated testing

The bar caliper uses a variety of methods (such as positive pressure split cooling and dustproof technology, industrial computer calculation, etc.) to make it suitable for a variety of working conditions, such as dust and water vapor at the production site, serious electrical interference. The caliper also solves the problem of vibration and twisting of the wire, and can work long-term at the production site, realizing dynamic measurement and creating conditions for rolling automation.

The bar caliper has a precision mechanical system that functions to ensure the accuracy of optical performance parameters. Temperature changes, stresses, deformations, vibrations, machining errors, etc. all have a large impact on the image quality of the optical system. Therefore, the tolerances and materials of the critical parts are strictly required to ensure the performance of the entire system. The bar caliper adopts the casting structure, and considering the environmental conditions, the round steel caliper adopts a box-type fully enclosed structure, and the joint is connected by a fastener. Since the optical axis of the optical system is to be in a plane, Therefore, the mechanical design of the optical mechanical components and the overall mechanical structure design are required to be high. The bosses of different heights are cast in the box to meet the requirements of fixing different optical components, and a certain adjustment space is reserved for manual adjustment. Detect the overall parameters of each optical system of the system. The bar caliper adopts positive pressure shunt cooling and dustproof technology to realize the cooling and dustproof of the caliper and realize its on-line detection in the production of hot rolled round steel.

The bar caliper can detect rolling products with a temperature of 1200 °C. To realize on-line automatic detection of high-temperature rolled materials, the caliper has a good sealing structure, good cooling and dustproof effect, and adopts industrial grade devices. It can also set the thermal expansion coefficient to obtain the cold wire diameter of the round steel. The working environment temperature is -15~ Between 50 ° C, the measurement frequency can reach 1000 Hz.

Conclusion

Bar caliper has the advantages of high measurement accuracy, fast speed, simple structure, multi-directional measurement, convenient use and strong ability to adapt to harsh production environment, which can play a great role in improving product qualification rate and saving steel. The caliper is also fully applicable to all kinds of cold steel. It can realize dynamic detection for various types of wire, bar and pipe outer diameter and ellipticity detection.

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