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Steel for axle head and preparation method thereof

A technology for axles and steel materials, applied in the field of axle head steel and its preparation, to achieve good welding performance and mechanical properties, improve cleanliness, and improve the effect of purity

Active Publication Date: 2018-05-22
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the structure and connection method of the axle head are mostly involved in the patents, but there are few patents related to the steel used for the axle head and its production method

Method used

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  • Steel for axle head and preparation method thereof
  • Steel for axle head and preparation method thereof
  • Steel for axle head and preparation method thereof

Examples

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Embodiment 1-3

[0031] A steel for axle shaft head. UHP ultra-high power electric furnace, LF refining, VD vacuum degassing process are used for smelting, continuous casting casting billets, rolling into lumber, peeling, and flaw detection processes to produce steel products. Embodiments 1-3 specifically illustrate how the present invention is implemented with the production process of Φ90mm steel.

[0032] The composition of steel is by mass percentage:

[0033] C: 0.16-0.18%, Si: 0.40-0.50%, Mn: 1.40-1.45%, Cr: ≤0.10%, P: ≤0.020%, S: ≤0.008%, V: 0.11-0.12%, Ni: ≤0.10 %, Cu: ≤ 0.10%, Mo: ≤ 0.10%, N: 0.015-0.017%, Al: 0.025-0.045%, [O] ≤ 15ppm, and the rest are Fe and unavoidable impurities. CEV=C+Mn / 6+(Cr+Mo+V) / 5+(Ni+Cu) / 15 of steel, CEV=0.44-0.46%.

[0034] The production process is as follows:

[0035] 1) Smelting

[0036] Electric furnace is used for smelting, the proportion of molten iron added is 60%-80%, the end point of electric furnace tapping [C]=0.08%-0.11%, [P]≤0.013%.

[00...

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Abstract

The invention discloses steel for an axle head and a preparation method thereof. The steel is prepared from the following chemical components in mass percent: 0.16 to 0.18% of C, 0.40 to 0.50% of Si, 1.40 to 1.45% of Mn, less than or equal to 0.10% of Cr, less than or equal to 0.020% of P, less than or equal to 0.008% of S, 0.11 to 0.12% of V, less than or equal to 0.10% of Ni, less than or equal to 0.10% of Cu, less than or equal to 0.10% of Mo, 0.015 to 0.017% of N, 0.025 to 0.045% of Al, less than or equal to 15ppm of [O], the balance of Fe and inevitable impurities and less than or equal to 0.47% of CEV. The preparation method of the steel for the axle head comprises the steps of smelting, pouring, rolling, scaling and inspecting. The steel for the axle head has the advantages of low carbon equivalent and good welding performance and mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of steel for automobiles, and in particular relates to steel for axle heads and a preparation method thereof. Background technique [0002] In the field of industrial equipment, the shaft head also refers to the two ends of the shaft. The shaft is a mechanical part that supports the rotating part and rotates with it to transmit motion, torque or bending moment. It is generally in the shape of a metal round rod, and each section can have different diameters. , the parts for rotary motion in the machine are mounted on the shaft. The two ends of the shaft are usually called the shaft head. The function of the shaft head part is usually to install the bearing and play the role of supporting the operation of the equipment on the shaft. [0003] Automobile axle head is a kind of automobile security parts. It has strict requirements on the cleanliness, uniformity, mechanical properties and welding performance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/12C22C38/02C22C38/04C22C38/18C22C38/08C22C38/16C22C38/06C22C33/04C21C7/10C21C7/064C21D8/06
CPCC21C7/0056C21C7/064C21C7/10C21D8/065C22C33/04C22C38/001C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/16C22C38/18
Inventor 梁娜戈文英吴德发郭磊李浩秋翟正龙欧阳峥容李金浩
Owner SHANDONG IRON & STEEL CO LTD
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