Rear cylinder body of high-performance crushing equipment and its processing method
A technology of crushing equipment and processing methods, which is applied in heat treatment equipment, manufacturing tools, furnaces, etc., can solve the problems of easy cracks in the rear cylinder body, and achieve the effects of reducing deformation dead zone, good heating, and uniform tissue shape
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Embodiment 1
[0037] A rear cylinder of high-performance crushing equipment. The components and weight percentages of the rear cylinder blank are: C: 0.20%, Si: 0.26%, Mn: 0.45%, Cr: 1.3%, Ni≤0.20%, Mo : 0.38%, P≤0.02%, S≤0.02%, the rest are iron and unavoidable impurities; the material is heat treated after forging and machining, and the inside of the rear cylinder is quenched and protected by a protective medium during heat treatment . The protective medium consists of 50% attapulgite of 1-2mm, 30% of attapulgite of 0.1-0.5mm, 20% of clay of 0.01-0.05mm, NaHCO 3 0.08%, due to the relatively large amount of attapulgite and clay, NaHCO 3 Relatively very small, in the actual production ratio, mainly consider the percentage of attapulgite and clay together to reach 100%, NaHCO 3 The amount is negligible, but NaHCO 3 It is necessary to join.
[0038] A processing method for improving the performance of the rear cylinder of the above-mentioned crushing equipment, the steps comprising:
[00...
Embodiment 2
[0049] A rear cylinder of high-performance crushing equipment, the components and weight percentages of the rear cylinder blank are: C: 0.25%, Si: 0.20%, Mn: 0.40%, Cr: 1.5%, Ni≤0.20%, Mo : 0.35%, P≤0.02%, S≤0.02%, the rest are iron and unavoidable impurities; the material is heat treated after forging and machining, and the inside of the rear cylinder is quenched and protected by a protective medium during the heat treatment . The protective medium is 40% of 1-2mm attapulgite, 35% of 0.1-0.5mm attapulgite, 25% of 0.01-0.05mm clay, NaHCO 3 0.05%.
[0050] A processing method for improving the performance of the rear cylinder of the above-mentioned crushing equipment, the steps comprising:
[0051] (1) Steel ingot heating: heating the steel ingot composed of the above-mentioned ingredients;
[0052] (2) Two upsetting and two pulling: the steel ingot is forged by the forging method of two upsetting and two pulling, and the forging ratio is selected to be about 2.3; as the fo...
Embodiment 3
[0061]A rear cylinder of high-performance crushing equipment, the components and weight percentages of the rear cylinder blank are: C: 0.29%, Si: 0.30%, Mn: 0.58%, Cr: 1.2%, Ni≤0.20%, Mo : 0.42%, P≤0.02%, S≤0.02%, the rest are iron and unavoidable impurities; the material is heat treated after forging and machining, and the inside of the rear cylinder body is quenched and protected by a protective medium during heat treatment . The protective medium consists of 55% attapulgite of 1~2mm, 30% of attapulgite of 0.1~0.5mm, 15% of clay of 0.01~0.05mm, NaHCO 3 0.1%.
[0062] A processing method for improving the performance of the rear cylinder of the above-mentioned crushing equipment, the steps comprising:
[0063] (1) Steel ingot heating: heating the steel ingot composed of the above-mentioned ingredients;
[0064] (2) Two upsetting and two pulling: the steel ingot is forged by the forging method of two upsetting and two pulling, and the forging ratio is selected to be about ...
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