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

High-temperature-oxidation-resistant high-boron high-speed steel for silicon-aluminum-chromium roller

A technology for oxidizing high-boron and high-speed steel, applied in the field of high-temperature oxidation-resistant high-boron high-speed steel for silicon-aluminum-chromium rolls. Effect

Active Publication Date: 2020-04-07
XI AN JIAOTONG UNIV +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under this working condition, the surface of high boron high speed steel will peel off rapidly due to compressive stress and thermal stress, resulting in the loss of roll

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
  • High-temperature-oxidation-resistant high-boron high-speed steel for silicon-aluminum-chromium roller
  • High-temperature-oxidation-resistant high-boron high-speed steel for silicon-aluminum-chromium roller
  • High-temperature-oxidation-resistant high-boron high-speed steel for silicon-aluminum-chromium roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Static high temperature oxidation experiment

[0044] Using the oxidation weight gain method, the static high-temperature oxidation test was carried out on 4 kinds of high-boron high-speed steel and M2 high-speed steel samples with different Si contents at 800 ° C, and the average value of the oxidation weight gain of three samples for each component was taken as the data The obtained oxidation data are shown in Table 1.

[0045] Table 1 Oxidation weight gain per unit area of ​​static oxidation at 800℃ / mg cm -2

[0046]

[0047] According to HB5258-2000, the anti-oxidation performance of the samples was evaluated, and the calculation results and evaluation results are shown in Table 2.

[0048] Table 2 Oxidation resistance evaluation of 800℃ static oxidation samples

[0049]

[0050]

[0051] The oxidation kinetics curve of the oxidation weight gain per unit area as a function of time is made, and the oxidation weight gain-time curve of high boron high speed...

Embodiment 2

[0056] Cyclic Oxidation Experiment

[0057] In the static oxidation experiments that have been carried out, the high-boron high-speed steel with Si content of 2.0wt.% shows the best static oxidation resistance, and the formed oxide film is dense, tightly combined with the matrix, and has fewer defects. Therefore, the A2 sample was selected for cyclic oxidation experiment at 800°C, 10 hours as a cycle, and 10 cycles (oxidation 10h, air cooling) to test the cyclic oxidation resistance of the A2 sample.

[0058] Like the static oxidation, the cyclic oxidation also adopts the oxidation weight gain method, and the average value of the oxidation weight gain of three samples in each cycle is taken as the data point, and the oxidation data obtained are shown in Table 3.

[0059] Table 3 Oxidation weight gain per unit area of ​​800℃ cyclic oxidation / mg cm -2

[0060]

[0061]

[0062] According to HB5258-2000, the oxidation resistance of the sample is evaluated, and the average...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses high-temperature-oxidation-resistant high-boron high-speed steel for a silicon-aluminum-chromium roller. The high-temperature-oxidation-resistant high-boron high-speed steel comprises 0.38%-0.56% of C, 1.32%-1.85% of B, 4.25%-5.00% of Cr, 1.0%-1.55% of Al, 1.0%-1.45% of W, 0.8%-1.25% of Mo, 0.55%-0.85% of V, 0.50%-1.00% of Mn, 1.82%-2.35% of Si and the balance Fe and inevitable trace impurities. The corrosion-resistant phase / SiO2 internal oxide bidirectional synergistic pinning effect of the high-boron high-speed steel can improve the oxidation resistance and strippingresistance of the material, and a research thought for further developing a high-speed steel roller material which can reliably serve in a high-temperature working condition can be provided, so that the pouring process is influenced, and the product compactness and the overall size stability are ensured.

Description

technical field [0001] The invention belongs to the technical field of anti-oxidation and corrosion materials, and in particular relates to a silicon-aluminum-chromium roll resistant to high-temperature oxidation and high-boron high-speed steel. Background technique [0002] High-speed steel is a new type of steel material developed on the basis of high-speed tool steel by increasing the content of C and V to increase the amount of high-hardness MC-type carbides. It has good wear resistance and thermal stability. The working environment of high-speed steel is generally harsh. For example, the lowest temperature of high-speed steel rolls is usually 700°C. During the strip rolling process, the steel transfers heat to the roll through heat conduction, causing the surface of the roll to heat up rapidly to undergo oxidation reactions. After a long period of high-temperature oxidation, the surface of the roll will be oxidized and corroded, and the surface material will peel off. ...

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): C22C38/32C22C38/06C22C38/22C22C38/24C22C38/04C22C38/34
CPCC22C38/04C22C38/06C22C38/22C22C38/24C22C38/32C22C38/34
Inventor 马胜强王嘉琪吕萍张宗良邢建东高义民李博
Owner XI AN JIAOTONG UNIV