Process for obtaining hardness-controllable laminated structure metal sheet through laser heating
A metal plate and laser heating technology, applied in metal processing equipment, metal rolling, metal rolling, etc., can solve the problems of wasting production time, high cleanliness requirements, low production efficiency, etc., and achieve high production efficiency and smooth operation process Simple, highly automated results
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Embodiment 1
[0036] In this embodiment, three 316LN stainless steel plates with a size of 7cm*5cm*10mm are used, and the composition (wt.%) is as follows: C≤0.03, Si≤0.73, Mn≤1.42, P≤0.045, S≤0.03, and Ni is 10.0-14.0, Cr 16.0-18.0, Mo 2.0-3.0, N 0.10-0.16, and the rest are Fe and unavoidable impurities.
[0037] (1) Perform surface pretreatment on the selected 3 pieces of 316LN stainless steel plates to remove oil stains and oxide films on the surface, and polish them to a metallic luster;
[0038] (2) if figure 1 As shown, the pretreated 3 pieces of 316LN stainless steel plates are cold-rolled with a synchronous / asynchronous cold rolling mill at room temperature. mm and 2mm, the total rolling reductions are 50%, 65% and 80% respectively;
[0039](3) Fix the rolled 316LN stainless steel plate, and use a YLS-6000 laser to locally heat it along the width direction with a laser beam from one end of the stainless steel plate. The power of the laser is 1.6kw, the scanning speed is 8mm / s, an...
Embodiment 2
[0043] In this embodiment, three titanium alloy plates with a size of 7cm*5cm*10mm and a grade of TC4 are used as the experimental objects, and their components (wt.%) are as follows: C≤0.1, Fe≤0.3, N≤0.05, H≤0.015, O ≤ 0.2, Al guidelines 5.5 ~ 6.8, V accounted for 3.5 ~ 4.5, the balance is Ti and impurities.
[0044] (1) Use a grinding wheel and alcohol to perform surface pretreatment on the selected TC4 titanium alloy plate to remove impurities, oil stains and oxide films on the surface until the surface shows a bright metallic luster;
[0045] (2) Under room temperature conditions, the pretreated TC4 titanium alloy plate is cold-rolled with a synchronous / asynchronous cold rolling mill. The rolling reduction per pass is 0.1mm, and the thickness after final rolling is 9mm, 8mm and The total rolling reduction of 7mm reaches 10%, 20%, and 30% respectively;
[0046] (3) Put the rolled TC4 titanium alloy plate into the laser box and fix it. Use the YLS-6000 laser to locally heat...
Embodiment 3
[0050] The embodiment selects three 7075 aluminum alloy metal sheets whose size is 7cm*5cm*10mm, and its composition (wt.%) is as follows: Si is 0.40, Fe is 0.50, Cu is 1.52, Mn is 0.30, Mg is 2.40, Cr is 0.21, Zn is 5.80, Ti is 0.21, and the balance is Al and unavoidable impurities. The strength and hardness of 7075 aluminum alloy are relatively high, but the elongation is lower than other series of aluminum alloys.
[0051] The specific operation steps are as follows:
[0052] (1) Perform surface pretreatment on three selected 7075 aluminum alloy metal plates with a size of 7cm*5cm*10mm, use a grinding wheel and alcohol to remove surface oil and oxide film, and polish until the surface of the plate shows a bright metallic luster;
[0053] (2) Under room temperature, the pretreated 7075 aluminum alloy metal sheet is cold-rolled with a synchronous / asynchronous cold rolling mill. The reduction of each rolling pass is 0.25mm, and the thickness of the sheet after final rolling i...
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