Unlock instant, AI-driven research and patent intelligence for your innovation.

Ti+Nb microalloyed component steel hot-rolled steel strip for steam shaft and preparation method of steel hot-rolled steel strip

A shaft steel and micro-alloy technology, which is applied in the field of Ti+Nb micro-alloyed component steam shaft steel hot-rolled strip, can solve the problem of high alloy cost and achieve the effect of light weight and high economic benefits

Inactive Publication Date: 2021-02-05
BAOTOU IRON & STEEL GRP
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Retrieve a patent for a 3-8mm yield strength 700MPa-level hot-rolled steel strip for automobile transmission shaft tubes and its production method. The 700MPa-level hot-rolled steel strip for automobile transmission shaft tubes designed with Nb-Ti-Ce system has high alloy costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ti+Nb microalloyed component steel hot-rolled steel strip for steam shaft and preparation method of steel hot-rolled steel strip
  • Ti+Nb microalloyed component steel hot-rolled steel strip for steam shaft and preparation method of steel hot-rolled steel strip
  • Ti+Nb microalloyed component steel hot-rolled steel strip for steam shaft and preparation method of steel hot-rolled steel strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The following are preferred embodiments of the present invention, which do not limit the protection scope of the present invention.

[0032] A method for designing a hot-rolled steel strip for steam shafts with a Ti+Nb microalloying composition. The chemical composition in mass percent is: C 0.06-0.08%; Si 0.05-0.15%; Mn 1.50-1.70%; Alt 0.020-0.050; Ca 0.0010-0.0030%; Nb 0.040-0.050%; Ti 0.070-0.090%; H≤0.0002%; O≤0.002%; N≤0.006%; the balance is Fe and other unavoidable residual elements.

[0033] Furthermore, a kind of Ti+Nb microalloying component steam shaft hot-rolled steel strip is provided, and its specific steps are:

[0034] LF furnace: Add alloys such as aluminum iron, ferromanganese, ferrosilicon and ferroniobium to adjust to the target composition range.

[0035] Continuous casting: The liquidus temperature of this steel is 1519°C, and the casting speed is 1.0m / min-1.5m / min for continuous casting production.

[0036] Hot rolling: choose a higher heating te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a Ti+Nb microalloyed component steel hot-rolled steel strip for a steam shaft and a preparation method of the steel hot-rolled steel strip. The Ti+Nb microalloyed component steel hot-rolled steel strip is prepared from following chemical components in percentage by mass: 0.06-0.08% of C; 0.05-0.15% of Si; 1.50-1.70% of Mn; 0.020-0.050% of Alt; 0.0010-0.0030% of Ca; 0.040-0.050% of Nb, 0.070-0.090% of Ti; smaller than or equal to 0.0002% of H; smaller than or equal to 0.002% of O; smaller than or equal to 0.006% of N; and the balance Fe and other unavoidable residual elements. According to the Ti+Nb microalloyed component steel hot-rolled steel strip for the steam shaft and the preparation method of the steel hot-rolled steel strip, Nb+Ti component system design is adopted, and economic benefits are high.

Description

technical field [0001] The invention relates to the technical field of production of automobile shaft tube products, in particular to a hot-rolled steel strip for steam shafts with a Ti+Nb microalloying composition. Background technique [0002] my country's automobile industry has become an important pillar of the national economy, but the automobile industry market competition is fierce, and automobile manufacturers must improve the quality of their products. The transmission shaft is an important part of power transmission in the automobile transmission system. Improving the quality of the steel used for the transmission shaft is of great significance for improving the competitiveness of automobile manufacturing and automobile sales. The steel pipes used in transmission shaft tubes in my country have a small maximum working torque and a low strength level, which cannot meet the requirements of lightweight transmission shaft systems. [0003] Existing patent research is a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C21D8/02
CPCC21D8/0205C21D8/0226C22C38/002C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14
Inventor 武利平张智刚宿成刘妍
Owner BAOTOU IRON & STEEL GRP