Hot-rolled steel material for vehicle driven plate dual steel sheet and preparation method thereof
A driving disc and dual technology, which is applied in the field of hot-rolled steel for vehicle driven disc dual steel sheet and its preparation, can solve the problems of heavy production equipment load, poor product shape, difficult production, etc., and achieve low production cost, Excellent surface quality, good shape and size effect
Active Publication Date: 2017-06-16
武汉钢铁有限公司
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Problems solved by technology
However, due to the low-temperature rolling, the load on the production equipment is very large, especially for products with a carbon content higher than 0.50%, the production is difficult, and the shape of the product is poor, which is difficult to meet the requirements of the dual steel sheet for the vehicle driven plate Require
Method used
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Embodiment Construction
[0036] The implementation of the present invention will be described in detail below in conjunction with the examples, but they do not constitute a limitation of the present invention, and are only examples. At the same time, the advantages of the present invention will become clearer and easier to understand.
[0037] Table 1 shows the chemical composition and weight percentage of the hot-rolled steel used for the dual steel sheet of the vehicle driven disk in Examples 1-6, and the chemical composition and weight percentage of the comparison steel in Comparative Examples 1-3, and the rest is Fe and unavoidable impurities.
[0038] Table 1 Chemical composition and percentage by weight (wt %) of each embodiment of the present invention and comparative example
[0039]
[0040] The slab obtained after the chemical composition is smelted, refined, vacuum treated and continuously cast is heated, controlled rolling, controlled cooling, coiling, slow cooling and smoothing to obta...
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Abstract
The invention discloses a hot-rolled steel material for a dual steel plate of a vehicle driven disc. The chemical composition and mass percentage of the steel are: C: 0.50-0.65%, Si: 0.10-0.30%, Mn: 0.70-1.10%, P≤ 0.015%, S≤0.005%, N≤0.006%, Cr: 0.10~0.30%, Als: 0.015~0.050%, Ni: 0.10~0.30%, the rest is Fe and unavoidable impurities; the product does not undergo annealing heat treatment, the hardness Less than 13HRC, the flatness of the plate is less than 10mm / m. The invention also discloses a preparation method of the hot-rolled steel material for the dual steel sheet of the vehicle driven disk. The invention has low economic cost, and the hot-rolled product has good cold formability and shape size, excellent surface quality and simple production process.
Description
technical field [0001] The invention relates to a low-alloy structural steel manufacturing technology, in particular to a hot-rolled steel material for a paired steel plate of a vehicle driven disc and a preparation method thereof. Background technique [0002] The dual steel sheet of the driven disc of the vehicle is an important part of the friction pair of the automobile and is one of the vulnerable parts. The current processing procedures include blanking steel sheets, flattening, grinding, and then quenching + tempering heat treatment process. The working environment and processing technology of the dual steel sheet of the driven disc require that the steel base has good hardenability, wear resistance, shear resistance and fatigue resistance, etc., but at the same time require the steel base to have an extremely low hardness before heat treatment. And the lower the better, generally lower than 15HRC. In order to meet this requirement, the material for the dual steel p...
Claims
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IPC IPC(8): C22C38/40B21C37/02
Inventor 谭文韩斌蔡珍汪水泽甘小龙孙宜强
Owner 武汉钢铁有限公司