Quick cooling test plant for disk type band steel, and method of use

Abstract

This invention relates to disk-type strip steel rapid cooling test apparatus for stimulating annealing process requirement of continuous annealing of strip steel, and its usage method. The apparatus comprises: a disk-type case, a disk-type sample fixing frame and a compensating wire that can rotate around a core axis in the case, a sample loading / unloading chamber, a heating / homogenizing chamber, a slow cooling / over-aging chamber, a spray cooling chamber and a water quenching chamber. When used, the compensating wire is connected to the surface of the sample, and then the sample is introduced into the above chambers in sequence. This invention has such advantages of large sample size, a wide variety of cooling methods, high cooling speed, simple apparatus, and low malfunction rate.

Description

technical field [0001] The invention relates to a disc-type strip steel rapid cooling test device and a using method thereof, in particular to a disc-type strip steel rapid cooling test device and a using method thereof to meet the annealing process requirements of the simulated strip steel in the continuous annealing process. Background technique [0002] One link of strip steel production is the annealing process, and the large-scale strip steel continuous annealing production line has become the main process for producing high-quality strip steel. In order to effectively develop high-strength steel products, it is necessary to conduct rapid cooling experiments on cold-rolled steel plates. Baosteel has started to carry out preliminary technical research work, but the original experimental equipment cannot carry out effective experiments due to unreasonable design. The research and development of strip steel continuous annealing process is the guarantee to continuously imp...

AI Technical Summary

Problems solved by technology

But the device is bulky and complex to configure

In the arrangement of the device, placing the overaging furnace under the cooling chamber has two defects: one is that as the test progresses, the temperature in the cooling chamber will gradually increase, which will affect the cooling rate; the other is that the temperature of the overaging furnace itself is difficult keep even

With the development of new strip steel products such as high-strength steel, the cooling rate is required to be >100°C / s, or even >200°C / s, and the existing equipment has been difficult to meet the requirements

[0009] 2. It is known that the existing strip steel cooling test devices all adopt a vertical rectangular box structure, and the areas of sample loading, heating, soaking, slow cooling, rapid cooling, and overaging are in a straight line, and each area is separated by a steel plate. Open, leaving a rectangular sample through the hole, arranged vertically from top to bottom

The tightness between the various areas of this structure is poor, and the mutual influence is large; the special fixture for fixing the sample is easy to deform; the steel wire rope or chain is easy to break, and the compensation wire of the thermocouple is easy to get stuck or broken.

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