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

Special alloy steel and method for high-speed rail turnout integral sliding bedplate

A kind of alloy steel, special technology, applied in the field of new material preparation and application, can solve the problems such as difficult to grasp, complex processing technology, short service life, etc., to solve the problem of precision and welding deformation, less machining process, strong integrity Effect

Inactive Publication Date: 2012-05-16
张佳秋
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are defects such as complex processing technology, difficult to master, and short service life

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
  • Special alloy steel and method for high-speed rail turnout integral sliding bedplate
  • Special alloy steel and method for high-speed rail turnout integral sliding bedplate
  • Special alloy steel and method for high-speed rail turnout integral sliding bedplate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Special alloy steel, composed of the following chemical composition (mass percentage, %): C 0.096; Si 0.624; Mn 0.611; P 0.026; S 0.007; Cr 13.05; Ni 1.87; The balance is Fe.

[0050] Put the castings and test rods with the above chemical composition into the box-type electric furnace for heat treatment:

[0051] (1) Normalizing treatment: heat in the furnace at 1080°C±10°C, keep it warm for 2-3 hours, and then put the test rod into the well-type electric furnace for tempering heat treatment after air cooling;

[0052] (2) Tempering treatment: heat in a furnace at 580°C±10°C for 4-5 hours, then air cool.

[0053] The mechanical properties are as follows;

[0054] Tensile strength: above 961Mpa

[0055] Yield strength: above 620Mpa

[0056] Elongation: 12.511.813 (for 3 test bars)

[0057] Hardness: 343HB

[0058] (3) Conclusion:

[0059] The performance is basically qualified, and the hardness is too hard to process.

example 2

[0061] Special alloy steel, composed of the following chemical composition (mass percentage, %):

[0062] C 0.081; Si 0.82; Mn 0.75; P 0.022; S 0.008; Cr 12.75; Ni 1.85; Nb 0.22; W 0.11;

[0063] Put the castings and test bars with the above chemical composition into the box-type electric furnace for heat treatment:

[0064] (1) Normalizing treatment: heat in the furnace at 1080°C±10°C, keep it warm for 2-3 hours, and then put the test rod into the well-type electric furnace for tempering heat treatment after air cooling;

[0065] (2) Tempering treatment: heat in a furnace at 620°C±10°C for 4-5 hours, then air cool. The mechanical properties are as follows;

[0066] Tensile strength: above 870Mpa

[0067] Yield strength: above 590Mpa

[0068] Elongation: 1313.213.9 (for 3 test bars)

[0069] Hardness: 283HB

[0070](3) Conclusion:

[0071] The performance is acceptable.

example 3

[0073] Special alloy steel, composed of the following chemical composition (mass percentage, %): C0.070; Si 0.86; Mn 0.91; P 0.018; S 0.006; Cr 12.75; Ni2.1; 0.03, the balance is Fe.

[0074] Put the casting test rod with the above chemical composition into the box-type electric furnace for heat treatment:

[0075] (1) Normalizing treatment: heat in the furnace (electric furnace) at 1080°C±10°C, keep it warm for 2-3 hours, and then put the test rod into the well-type electric furnace for heat treatment after air cooling;

[0076] (2) Quenching treatment: heat in a furnace at 650°C±10°C for 4-5 hours, quench into oil and cool to room temperature.

[0077] (3) Tempering treatment: heat in a furnace at 280°C±10°C for 4-5 hours, then air cool.

[0078] The mechanical properties are as follows;

[0079] Tensile strength: above 840Mpa

[0080] Yield strength: above 560Mpa

[0081] Elongation: 14 14.2 13.1 (make 3 test bars)

[0082] Hardness: 276HB

[0083] (4 Conclusion:

...

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
Tensile strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention which relates to novel special alloy steel, and concretely relates to special alloy martensite stainless steel and a method for preparing a high-speed rail turnout integral sliding bedplate from the stainless steel belongs to the technical field of novel material preparations and applications thereof. The special alloy steel comprises the following chemical components, by weight, equal to or less than 0.10% of C, equal to or less than 1.5% of Si, equal to or less than 1.5% of Mn, equal to or less than 0.03% of P, equal to or less than 0.03% of S, 12.5-15.5% of Cr, 1-2% of Ni, a certain amount of Nb, 0.05-0.2% of W, 0.0003-0.0005% of B, 0.02-0.04% of N, and the balance Fe, wherein the amount of Nb is 3-5 times the amount of C. The method is carried out with integral casting one-time forming. According to the invention, defects of the processing technology complexity and the short service life caused by the adoption of easily abraded common carbon steel and the welding of three parts in the prior art are offset. The integral sliding bedplate of the invention, which successfully replaces split-welded sliding bedplates, has the characteristics of high strength, good abrasion resistance, corrosion resistance and no rust, no deformation, and short production period. So, the method which can satisfy essential conditions for the streamline production is very suitable for the large batch production.

Description

technical field [0001] The invention relates to a new type of special alloy steel, specifically a special alloy steel martensitic stainless steel and a method for using the material to prepare a high-speed railway turnout integral sliding bed platen, belonging to the technical field of new material preparation and application. Background technique [0002] The overall sliding bed platen of the high-speed railway turnout in the prior art adopts ordinary carbon steel, and a wear-resistant layer of silicon carbide material is welded on its surface, and the thickness is generally only about 0.15mm. But because the wear-resistant layer is too thin, the service time is greatly limited. The structure of the above-mentioned deck is welded by three components. Due to the welding of two materials, welding defects and cracks are prone to occur during welding, so all welding joints should be inspected. There are complex processing techniques, difficult to master, and short service lif...

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
IPC IPC(8): C22C38/54B22C9/04C21D9/00E01B7/14
Inventor 蒲玉宾张淼张俊英张佳秋
Owner 张佳秋
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