Cantilevered roller and manufacturing method thereof
A manufacturing method and technology of cantilever rolls, which are applied in the field of steel smelting equipment, can solve problems such as poor performance of cantilever rolls, and achieve the effects of improving microhardness, reducing production costs, and increasing strength
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Embodiment 1
[0038] A cantilever roller whose chemical composition and weight percentage are: carbon 0.33%, manganese 1.5%, silicon 1.2%, chromium 28%, nickel 48%, tungsten 5%, sulfur 0.3%, P phosphorous 0.4%, the balance It is iron and inevitable impurities. The above-mentioned cantilever roller is worth using the following manufacturing methods:
[0039] (1) Smelting process: Prepare steel raw materials according to the above chemical components and their weight percentages, and perform preliminary smelting in an electric arc furnace. After smelting, the molten steel is placed in a refining furnace to refine the molten steel, and the refining temperature is 1590℃; After adjusting the content of each chemical component to qualified, adjust the temperature to 1500℃ for tapping, and cast into steel ingots by die casting;
[0040] (2) Forging process: heating the steel ingot to 1200°C, holding time for 9 hours; then forging into a roll blank, and performing heat treatment and turning processing ...
Embodiment 2
[0044] A cantilever roller whose chemical composition and its weight percentage are: carbon 0.3%, manganese 1%, silicon 1.8%, chromium 29%, nickel 47%, tungsten 4%, sulfur 0.25%, P phosphorus 0.5%, the balance It is iron and inevitable impurities. The above-mentioned cantilever roller is worth using the following manufacturing methods:
[0045] (1) Smelting process: Prepare steel materials according to the above chemical components and their weight percentages, and perform preliminary smelting in an electric arc furnace. After the smelting is completed, the molten steel is placed in a refining furnace to refine the molten steel at a refining temperature of 1650°C; After adjusting the content of each chemical component to qualified, adjust the temperature to 1560°C for tapping, and cast into steel ingots by die casting;
[0046] (2) Forging process: heating the steel ingot to 1250°C, holding time for 7 hours; then forging into a roll blank, and heat treating and turning the roll bl...
Embodiment 3
[0050] A cantilever roller whose chemical composition and weight percentage are: carbon 0.39%, manganese 2%, silicon 1%, chromium 27%, nickel 49%, tungsten 6%, sulfur 0.35%, P phosphorous 0.3%, the balance It is iron and inevitable impurities. The above-mentioned cantilever roller is worth using the following manufacturing methods:
[0051] (1) Smelting process: Prepare steel materials according to the above chemical components and their weight percentages, and conduct preliminary smelting in an electric arc furnace. After smelting, place the molten steel in a refining furnace for refining the molten steel at a refining temperature of 1600℃; After adjusting the content of each chemical component to qualified, adjust the temperature to 1540°C for tapping, and cast into steel ingots by die casting;
[0052] (2) Forging process: heating the steel ingot to 1230°C, holding time for 8 hours; then forging into a roll blank, and heat treating and turning the roll blank;
[0053] (3) Temper...
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