Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Steel plate for punching-welding axle housing and manufacturing method thereof

A manufacturing method and technology of stamping and welding bridges, which are applied to high-performance steel plates formed by 600MPa-level hot stamping and their manufacturing fields, can solve problems such as difficult to meet strength and low strength levels, achieve unique process path control, improve the cleanliness of molten steel, The effect of a wide range of thickness specifications

Inactive Publication Date: 2015-05-20
JIGANG GRP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An application number of Liuzhou Iron and Steel Co., Ltd. published by the State Intellectual Property Office is 201110263882.7, and the patent is named "Steel Plates for Automobile Axle Housings and Its Production Method". The steel for cold forming between 0.73-0.79 has a low strength level, and it focuses on ensuring its good cold forming performance. Its composition design is substantially different from that of hot stamping steel, which is finally reflected in the process performance. , it is difficult to meet the requirements of downstream users that the strength does not decrease after thermal processing

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
  • Steel plate for punching-welding axle housing and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0049] C: 0.16%, Si: 0.04%, Mn: 1.48%, P: 0.010%, S: 0.003%, Nb: 0.027%, V: 0.039%, Ti: 0.019%, Al: 0.029%, CEV: 0.41%. The rest is Fe and unavoidable impurities.

[0050] The production method of steel plate is as follows:

[0051] 1) The temperature of the molten iron after pretreatment with KR is 1355°C, and the [S] in the treated molten iron is 0.001%.

[0052] 2) The carbon composition at the end point of converter smelting is controlled at [C]=0.074%, Si=0.0045%, S=0.009%, P=0.012%, and the end point temperature is 1640°C; the tapping time of double-block slag is 4.7 minutes, and the tapping process is guaranteed The ladle is stirred with argon blowing throughout.

[0053] 3) In the deoxidation alloying process, the amount of high-carbon ferromanganese, aluminum manganese, ferro-niobium, and ferro-vanadium alloys is converted according to the actual tapping amount and alloy composition, and the alloy is added before 4 / 5 of the tapping; blowing argon at the CAS station ...

Embodiment 2

[0062] C: 0.17%, Si: 0.03%, Mn: 1.54%, P: 0.012%, S: 0.004%, Nb: 0.036%, V: 0.043%, Ti: 0.024%, Al: 0.032%, CEV: 0.44%. The rest is Fe and unavoidable impurities.

[0063] The production method of steel plate is as follows:

[0064] 1) The temperature of the molten iron after pretreatment with KR is 1371°C, and [S] in the treated molten iron is 0.003%.

[0065] 2) The carbon composition at the end point of converter smelting is controlled at [C]=0.10%, Si=0.0005%, S=0.010%, P=0.0086%, and the end point temperature is 1642°C; the tapping time of double-block slag is 4.8 minutes, and the tapping process is guaranteed The ladle is stirred with argon blowing throughout.

[0066] 3) In the deoxidation alloying process, the amount of high-carbon ferromanganese, aluminum manganese, ferro-niobium, and ferro-vanadium alloys is converted according to the actual tapping amount and alloy composition, and the alloy is added before 4 / 5 of the tapping; blowing argon at the CAS station Fee...

Embodiment 3

[0075] C: 0.18%, Si: 0.04%, Mn: 1.58%, P: 0.008%, S: 0.001%, Nb: 0.042%, V: 0.046%, Ti: 0.026%, Al: 0.035%, CEV: 0.45%. The rest is Fe and unavoidable impurities.

[0076] The production method of steel plate is as follows:

[0077] 1) The temperature of the molten iron after pretreatment with KR is 1367°C, and [S]=0.002% in the treated molten iron.

[0078] 2) The carbon composition at the end point of converter smelting is controlled at [C]=0.061%, Si=0.003%, S=0.008%, P=0.010%, and the end point temperature is 1650°C; the tapping time of double-block slag is 4.7 minutes, and the tapping process is guaranteed The ladle is stirred with argon blowing throughout.

[0079] 3) In the deoxidation alloying process, the amount of high-carbon ferromanganese, aluminum manganese, ferro-niobium, and ferro-vanadium alloys is converted according to the actual tapping amount and alloy composition, and the alloy is added before 4 / 5 of the tapping; blowing argon at the CAS station Feed th...

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
tensile strengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a 600MPa grade hot stamping steel plate with excellent performance for stamping and welding axle housing after heating and its manufacturing method. By adding elements such as Nb and V to ensure the high temperature performance of the steel, the influence of C and Si on stamping is reduced. The element content of the performance, through the combination of Ti, Al and other nitrogen-fixing elements, fundamentally ensures that the steel plate has good formability, while the high-temperature strength is improved, the low-temperature toughness is excellent, the welding performance is improved, the fatigue strength is significantly improved, and the fatigue life of the component is extended. above 50. It can be widely used in the production of medium and heavy plate rolling pieces that require high temperature strength for large structural steels that operate under high temperature conditions such as hot forming, large blowers, and vibrating screens.

Description

technical field [0001] The invention relates to a steel plate for punching and welding axle housings and a manufacturing method thereof, in particular to a 600MPa hot-stamped high-performance steel plate that is directly stamped and welded into an axle housing assembly after being heated at 700-850°C and a manufacturing method thereof. Background technique [0002] Weight reduction, energy saving, safety, and environmental protection are the themes of continuous development of the world's manufacturing industry, and reducing the weight of equipment is one of the most effective measures to reduce fuel consumption and emissions. The axle housing is an important safety and functional part of the car. It supports the weight of the frame and the subsequent assemblies of the frame, and at the same time it protects the components of the transmission system. In terms of use, the shape and structural characteristics of the axle housing determine that the material of the axle housing ...

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 Patents(China)
IPC IPC(8): C22C38/14C22C33/04C21D8/02B60B35/16
Inventor 胡淑娥孙卫华周兰聚栾彩霞李建磊谢晖
Owner JIGANG GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com