Full-technique non-oriented electrical steel continuous annealing test method

Abstract

The invention discloses a method for testing the continuous-annealing of complete-process non-oriented electrical steel. The method comprises the following procedures: sample plate testing preparation; thermoelectric couple welding; simulation testing; and test result detecting: the procedure of sample plate testing preparation comprises the following steps: carrying out the deoiling and degreasing treatment and heat preservation drying on the surface of the testing sample plate, evenly coating the dried surface of the sample plate with high-temperature resistant anti-oxidation coatings and further carrying out curing and sintering, wherein, the electrical steel cold-rolling hard plate is adopted as the sample plate with the dimension being 250 mm * 450 mm (450 as the rolling direction), and the surface thereof is free from defects affecting magnetic properties; in the procedure of thermoelectric couple welding, 5 or 3 pairs of thermoelectric couples are welded in diagonal distribution on the coated testing sample plate; the procedure of simulation testing comprises the following steps: loading the welded sample plate into a continuously annealing simulation unit, starting a hydraulic clamp to clamp the sample plate, and then setting the matching relation between the temperature and the tension for testing; and the procedure of test result detecting comprises the following steps: releasing the tension, carrying out the plate shape measurement of the tested sample plate, and if the plate shape is unqualified, resetting the temperature and the tension, and conducting the test repeatedly on new sample plates until the plate shape is qualified.

Description

technical field [0001] The invention relates to a continuous annealing test method for a single piece of electrical steel, in particular to a continuous annealing test method for a full-process non-oriented electrical steel. Background technique [0002] As a functional material, electrical steel is a high-quality steel product with complex manufacturing processes and high product performance requirements. The final performance of electrical steel is realized by continuous annealing process. At present, most researches on continuous annealing process are realized through online mass production or small-scale simulated production units. On-line trial production requires multiple steelmaking and trial production to adjust different process parameters, and the furnace environment changes slowly, the repeatability of the same process is poor, and the target process parameters are difficult to match. The cycle of each test is very long, and the superior performance The product n...

AI Technical Summary

Problems solved by technology

On-line trial production requires multiple steelmaking and trial production to adjust different process parameters, and the furnace environment changes slowly, the repeatability of the same process is poor, and the target process parameters are difficult to match. The cycle of each test is very long, and the superior performance It takes at least half a year for the product to be obtained, and the unqualified part (mostly) of each trial production product must be treated as scrap steel, which consumes a lot of manpower and material resources

It can be said that these test methods have problems such as long test period, waste of test raw materials, high test cost, complicated test preparation, and difficulty in repeated tests.

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