Steel belt for spoke of vehicle wheel and manufacturing method thereof

A manufacturing method and wheel technology, which is applied in the field of manufacturing spinning spokes, can solve the problems that the wheel cannot adapt to the development trend, poor steel welding performance, complex composition design, etc., and achieve stable control of chemical composition, good welding performance, and stable dimensional control Effect

Inactive Publication Date: 2008-10-08
SHANDONG IRON & STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0002] Traditional automobile wheels are all inner tube wheels, and the spokes of the wheels are mostly processed by section steel. Poor performance, high scrap rate
At present, with the increasing shortage of energy sources, automobiles are developing in the direction of lightweight, and traditional automobile wheels cannot adapt to this development trend gradually.
[0003] Chinese patent CN1056535A discloses a steel for automobile rolling wheels (application number 90103577.7). This invention adds Nb, Ti and rare earth elements to the steel to make the steel have higher strength, but its composition design is complicated, especially adding Rare earth elements, it is difficult to precisely control various elements in the production process

Method used

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  • Steel belt for spoke of vehicle wheel and manufacturing method thereof

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Embodiment 1

[0024] 1. The chemical composition of steel is as follows by weight percentage:

[0025] C: 0.07%, Si: 0.05%, Mn: 0.65%, P: 0.012%, S: 0.009%, Al: 0.028%, and the rest are Fe and unavoidable impurities.

[0026] 2. The manufacturing method of steel strips for automobile wheel spokes, taking 6.0mm thick steel strips as an example, the billet size is 175mm×1260mm:

[0027] (1) Preparation process route

[0028] Hot metal pretreatment - top and bottom double blowing converter smelting - LF ladle refining - slab continuous casting - hot rolling mill rolling.

[0029] (2) preparation method, the steps are as follows:

[0030] Hot metal pretreatment: control the sulfur in the hot metal below 0.035%, the temperature is: 1270°C, and remove the slag on the surface of the hot metal after desulfurization. Converter smelting endpoint control: C: 0.05%, S: 0.015%. LF refining white slag operation, feeding 350m calcium iron wire for calcification treatment before the molten steel leaves...

Embodiment 2

[0033] 1. The chemical composition of steel is as follows by weight percentage:

[0034] C: 0.10%, Si: 0.13%, Mn: 0.75%, P: 0.022%, S: 0.011%, Al: 0.042%, Nb: 0.009%, and the rest are Fe and unavoidable impurities.

[0035] 2, the manufacture method of steel strip for automobile wheel spoke, take 11.75mm thick steel strip as example, casting slab specification is 160mm * 1360mm, and production process route is the same as embodiment 1, and step is as follows:

[0036] Hot metal pretreatment: control the sulfur in the hot metal below 0.035%, the temperature is: 1300°C, and remove the slag on the surface of the hot metal after desulfurization. Converter smelting endpoint control: C: 0.08%, S: 0.015%. LF refining white slag operation, the molten steel is fed into a 500m silicon-calcium line for calcification before leaving the refining station, soft argon is blown for 12 minutes, the whole process of slab continuous casting is protected and poured, the crystallizer is cooled by ...

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Abstract

The invention relates to a steel strip for the wheel spoke of the vehicle and the manufacturing method thereof. The chemical composition of the steel strip has the following weight percentage: C is larger than 0 and lower than or equal to 0.26 percent, Si is lower than or equal to 0.50 percent, Mn is larger than 0 and lower than or equal to 2.0 percent, P is lower than or equal to 0.035 percent, S is lower than or equal to 0.035 percent, Al is larger than 0 and lower than or equal to 0.10 percent, Nb is larger than 0 and lower than or equal to 0.060 percent, and the residue is Fe and micro impurities. The steel strip of the invention adopts molten iron desulphurization, converter smelting, LF ladle refining, slab continuous casting, rolling by hot continuous rolling mill, which has superior welding performance and molding performance, the mechanical property is uniform, the processing of the spinning spoke of vehicle wheels in varied specifications can be performed, and the finished product rate is high. The steel strip for the wheel spoke of the vehicle of the invention has the advantages that the cost is low, the producing operation is easy, and the industrialization is easy.

Description

technical field [0001] The invention relates to a steel strip for automobile wheel spokes and a manufacturing method thereof, which is particularly suitable for manufacturing spinning spokes. Background technique [0002] Traditional automobile wheels are all wheels with inner tubes, and the spokes of the wheels are mostly processed by section steel. Poor performance and high scrap rate. At present, with the increasing shortage of energy sources, automobiles are developing in the direction of lightweight, and traditional automobile wheels cannot adapt to this development trend gradually. [0003] Chinese patent CN1056535A discloses a steel for automobile rolling wheels (application number 90103577.7). This invention adds Nb, Ti and rare earth elements to the steel to make the steel have higher strength, but its composition design is complicated, especially adding Rare earth elements, it is difficult to precisely control various elements in the production process. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/12B23P17/00C21C5/30C21C7/04B21B37/74
Inventor 亓伟伟汤化胜周平王腾飞王学新霍孝新刘莱萌陈爱娇
Owner SHANDONG IRON & STEEL CO LTD
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