A kind of preparation method of Bemao composite phase anti-corrosion steel
An anti-corrosion and austenitic zone technology, which is applied in the field of preparation of Bermao multiphase anti-corrosion steel, can solve the problem of large amount of martensite, difficult temperature control, and difficulty in controlling the cooling rate of the cross-section of large-scale production products, etc. problem, to achieve the effect of simple process and easy control
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Embodiment 1
[0050] Bei Maao preparation of one kind of composite steel abrasion follows:
[0051] 1, mass percent of alloying elements in the alloy of Example 1 according to the embodiment in Table 1,
[0052] 2, the on-line control of the rolling ratio and the temperature of the rolled billet 200mm after melting of the alloy and then rapidly cooled to 200 is performed deg.] C, then heated for 2 hours cooled to room temperature after 600 ℃,
[0053] 3, the above product was heated rolling off 1200 deg.] C using abrasive or hot pressing the desired product steel rails then cooled to room temperature for 4 hours cooled 650 ℃,
[0054] 4, the above-described steel thermoformed article from room temperature to the austenitizing temperature for 5 hours to give complete;
[0055] 5, the above-described steel product is cooled from the austenite state directly after quenching liquid to cool to room temperature 350 ℃ stack;
[0056] 6, after the re-heating 350 deg.] C for 4 hours, cooled to room temp...
Embodiment 2
[0059] Bei Maao preparation of one kind of composite steel abrasion follows:
[0060] 1, mass percent of alloying elements in the alloy of Example 2 according to the embodiment in Table 1,
[0061] 2, after the melting of the alloy and the ratio of on-line controlled rolling temperature and then rolled to a 300mm thick plate of the chamber to be cooled stack, after warming for 4 hours and then cooled to room temperature 650 ℃,
[0062] 3, the above-described offline cold rolled products made using mechanical equipment such as wheels and backing of the desired product,
[0063] 4, the cold-forming the steel product is heated to a fully austenitic after incubated for 6 hours;
[0064] 5, the above-described steel product by direct quenching liquid quick cooling from the austenite state to 300 ℃ furnace cooling to 100 deg.] C;
[0065] 6, after the re-heating 300 deg.] C for 3 hours, cooled to room temperature directly completed.
[0066] Get performance: The above process is suitabl...
Embodiment 3
[0068] Bei Maao preparation of one kind of composite steel abrasion follows:
[0069] 1, mass percent of alloying elements in the alloy of Example 3 according to the embodiment in Table 1,
[0070] 2, after a conventional steel smelting process, using casting sand casting molding or casting process;
[0071] 3, the above-described molded steel castings was cooled to 100 deg.] C;
[0072] 4, the above-described casting products reheated to 500 ± 50 ℃ 4 hours and then warmed to ensure 880 ℃ heat, direct water cooling to 100 deg.] C isothermal for 4 h.
[0073] After 5, reheating above 350 deg.] C incubation for 6 hours and cooled to room temperature directly completed.
[0074] Get performance: The above process is suitable for large cross-section cast abrasion resistant steel, to get as many upper bainite bainite martensite, residual austenite more, a large cutting suitable material, Weak, electrochemical etching / chemical corrosion the use environment wear.
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