Timing measurement device for water cooling temperature of bar

Abstract

The invention discloses a timing measurement device for a through water cooling temperature of a bar, belongs to metal rolling, and in particular relates to a measurement device for a rolled control cooling temperature of the bar. The device consists of a temperature detector and a temperature detection signal timing acquisition device, wherein the temperature detector is arranged on the upper bar side of a cooling bed and is electrically connected with a through water cooling electronic control system in a main control machine room. The device is characterized in that: the temperature detection signal timing acquisition device is arranged in the gap between two straightening plates of the cooling bed of which the bar has consistent internal and external temperatures, is arranged oppositeto the temperature detector, and is connected with the through water cooling electronic control system through a conducting wire. Compared with the prior art, the invention has the advantages that: the device has a novel concept, a compact structure and an accurate and reliable detection temperature, is convenient to manufacture and mount, eliminates temperature drop differences generated by the same bar within the detection detention time, eliminates self-tempering temperature rise differences of bars of different specifications, eliminates falsely-detected temperatures of the straightening plates, makes a temperature fluctuation range reduced to be between 20 and 40 DEG C, can effectively control the mechanical property of the bar and improves the mechanical property uniformity of a cleaning bar; and on the premise of determining the mechanical property of the bar, the using amount of microalloy is reduced, the aims of energy conservation and consumption reduction are fulfilled, theproduction cost is reduced, and the economical benefits of enterprises are improved.

Description

technical field [0001] The invention belongs to metal rolling, in particular to a measuring device for controlling cooling temperature after bar rolling. Background technique [0002] The precise control of the water cooling temperature of hot-rolled bars can improve the mechanical properties of finished bars, reduce production costs, and improve economic benefits. The premise of precise control of rod cooling temperature is the accurate measurement of the temperature of the cooling bed on the rod. After passing through the water-cooled water tank, the high-temperature bar is transferred to the cooling bed by the input roller table. During the period of time in the upper cooling bed, the surface of the rod changes from dark red to bright red, and the surface temperature of the rod rises from tempering from the inside to the outside until the surface heats up to normal temperature. This temperature is the controlled cooling temperature to be detected at the first time after...

AI Technical Summary

Problems solved by technology

[0004] Its defect is: there are a lot of detected data, including the temperature data of the first time when the bar is placed on the cooling bed, and a large amount of non-first time temperature data, including the temperature data of the bar, and the redness of the straightening plate. Temperature data: The temperature changes are complex and the fluctuation range is large. The residence time of the bar at the detection point is different due to different rolling specifications, and the residence time is as long as 6 to 15 seconds.

Therefore, the digital display screen jumps frequently, and it is impossible to distinguish the temperature data of the bar on the cooling bed at the first time, and it is impossible to obtain the bar control cooling temperature required for process control, resulting in the mechanical properties of the bar with the same chemical composition and finished product diameter. Differences, and uneven mechanical properties of cleaning rods, and waste of water resources

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