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Steel strip for automobile hollow stabilizer bar and production method thereof

A production method and technology for stabilizer bars, applied in the field of metallurgy, can solve the problems of unsatisfactory use effect, poor anti-fatigue performance, low service life, etc., so as to ensure the fatigue performance of stabilizer bars, high tensile strength, and improve the forming performance of steel coils Effect

Active Publication Date: 2021-12-03
TANGSHAN STAINLESS STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the use requirements of the stabilizer bar, high-strength steel is generally used as the raw material for manufacturing, and the seamless tube of 35CrMo steel is used as the material for the hollow automobile stabilizer bar. The application shows that the hollow stabilizer bar made of 35CrMo material has poor fatigue resistance and is easy to produce fatigue damage at the stressed place. Fatigue cracks, low service life, unsatisfactory use effect

Method used

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  • Steel strip for automobile hollow stabilizer bar and production method thereof
  • Steel strip for automobile hollow stabilizer bar and production method thereof
  • Steel strip for automobile hollow stabilizer bar and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The thickness of the finished hot-rolled steel strip for the hollow stabilizer bar in this embodiment is 4.0 mm, and its chemical composition and mass percentage are shown in Table 1.

[0039] The production method of the hot-rolled steel strip for the hollow stabilizer bar of this embodiment includes converter smelting, LF refining, continuous casting, heating, rough rolling, finish rolling, cooling and coiling processes, and the specific process steps are as follows:

[0040] (1) Continuous casting process: control the composition segregation by stabilizing the casting speed, the casting speed is 1.20m / min, and the steel billet with a thickness of 180mm and a width of 1280mm is obtained by continuous casting. The chemical composition and mass percentage of the continuous casting billet are shown in Table 1;

[0041] (2) Heating process: heating by a walking heating furnace, the total residence time in the heating furnace is 160min, the heating temperature in the soakin...

Embodiment 2

[0048] The finished product thickness of the hot-rolled steel strip for the hollow stabilizer bar in this embodiment is 5.0mm, and its chemical composition and mass percentage are shown in Table 1.

[0049] The production method of the hot-rolled steel strip for the hollow stabilizer bar of this embodiment includes converter smelting, LF refining, continuous casting, heating, rough rolling, finish rolling, cooling and coiling processes, and the specific process steps are as follows:

[0050](1) Continuous casting process: control component segregation through stable casting speed, casting speed 1.30m / min, continuous casting to obtain a billet with a thickness of 200mm and a width of 1250mm, the chemical composition and mass percentage of the continuous casting billet are shown in Table 1;

[0051] (2) Heating process: heating by a walking heating furnace, the total residence time in the heating furnace is 208 minutes, the heating temperature in the soaking section of the heatin...

Embodiment 3

[0058] The finished product thickness of the hot-rolled steel strip for the hollow stabilizer bar in this embodiment is 5.0mm, and its chemical composition and mass percentage are shown in Table 1.

[0059] The production method of the finished hot-rolled steel strip for the hollow stabilizer bar of this embodiment includes converter smelting, LF refining, continuous casting, heating, rough rolling, finish rolling, cooling and coiling processes, and the specific process steps are as follows:

[0060] (1) Continuous casting process: control component segregation through stable casting speed, the casting speed is 1.30m / min, and continuous casting produces a billet with a thickness of 210mm and a width of 1300mm. The chemical composition and mass percentage of the continuous casting billet are shown in Table 1;

[0061] (2) Heating process: heating by a walking heating furnace, the total residence time in the heating furnace is 210min, the heating temperature in the soaking sectio...

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Abstract

The invention discloses a steel strip for automobile hollow stabilizer bars and a production method thereof. The chemical composition of the steel strip is: C, Mn, S, P, Si, Als, Cr, Ti, B, H, O, N , and need to meet: 0.15%≤Cr+Nb+V+Ti+Mo≤0.5%, S+P+H+O+N≤0.03%, Ti / N≥6.83, CEV: 0.55~0.65%, the balance is Iron and unavoidable impurities; production methods include converter smelting, LF refining, RH refining, continuous casting, heating, rough rolling, finish rolling, cooling and coiling processes. The invention adopts carbon-manganese-titanium-chromium composition design, by adjusting the alloy composition, controlling the content of trace elements, controlling the cooling path, and adopting low-temperature coiling, the obtained hot-rolled steel strip is suitable for the production of steel pipes for automobile hollow stabilizer bars, ensuring The safety of the car stabilizer bar is conducive to reducing the weight of the car chassis and reducing the fuel consumption of the whole car.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a steel strip for an automobile hollow stabilizer bar and a production method thereof. Background technique [0002] In recent years, in order to improve the stability of automobiles and achieve further weight reduction, in the automobile manufacturing process, hollow pipes have been used instead of solid materials to manufacture stabilizer bars. The hollow stabilizer bar is an auxiliary elastic component of the car suspension system that has gradually emerged in the automotive industry in recent years. The function of the stabilizer bar is to reduce the shaking of the car when the car is turning and reduce the chance of the car rolling over. Its characteristics are It can ensure safety and improve ride comfort. At the same time, the hollow design of the stabilizer bar can reduce the weight of the vehicle and reduce fuel consumption, achieving the characteristics ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/02C21D9/52C21D6/00C22C38/02C22C38/04C22C38/06C22C38/22C22C38/24C22C38/26C22C38/28C22C38/32B21B1/22B21B3/00B21B37/74B21B45/08
CPCB21B1/22B21B3/00B21B37/74B21B45/08C21D6/002C21D6/005C21D6/008C21D8/0226C21D9/52C21D2211/004C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/22C22C38/24C22C38/26C22C38/28C22C38/32
Inventor 李建设刘海春李阳王朋飞吕苗苗任振远郭银涛师可新张红娟
Owner TANGSHAN STAINLESS STEEL
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