Ultra-high temperature electrothermal alloy and preparation method thereof
An electrothermal alloy and ultra-high temperature technology is applied in the field of metal materials, which can solve the problem of high production cost of high temperature heat treatment furnaces, and achieve the effects of good oxidation resistance, creep resistance at high temperature, good winding performance, and easy processing and forming.
Inactive Publication Date: 2010-11-24
BEIJING SHOUGANG GITANE NEW MATERIALS
View PDF4 Cites 29 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to provide an ultra-high temperature electrothermal alloy that not only guarantees the performance of the alloy but also the processing performance of the alloy, and solves the problem of high production cost of the domestic high-temperature heat treatment furnace
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] Table 1 lists some examples in production.
[0016] Table 2 shows the examples of HRE ultra-high temperature electrothermal alloy electroslag remelting slag system. Production practice shows that the rare earth oxide content is less than 15%, and the rare earth content in steel is lower than 0.04%, but when the rare earth oxide content is higher than 70%, the surface of the steel ingot is not smooth, and the surface quality of the steel ingot is not good. Similarly, without cryolite, the surface quality of the steel ingot is not good.
[0017]
[0018]
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
Login to View More Abstract
The invention belongs to the metal material field and relates to an ultra-high temperature electrothermal alloy and a preparation method thereof. The electrothermal alloy comprises the following chemical components in percentage by mass: not more than 0.03% of C, not more than 0.25% of Si, not more than 0.5% of Mn, not more than 0.5% of Ni, not more than 0.01% of S; not more than 0.02% of P, 22-26% of Cr, 5.0-7.0% of Al, 0.04-1% of one or more of La+Ce, Y, Hf and Zr, 0.01-0.5% of Ti, 0.1-0.5% of Nb, 0.2-1.0% of Co and the balance Fe. The alloy has good winding performance, resistivity at 20 DEG C of 1.4-1.55, 650-800MPa of tensile strength and accelerated life at 1400 DEG C of 93h and better oxidation resistance and high-temperature creep resistance, is easy in machine-forming and is mainly used for the electrothermal elements of such furnaces with working temperature of 1200-1300 DEG C as single crystal diffusion furnaces, sintered metal product sintering furnaces, ceramic calcinating furnaces, high-temperature thermal treatment furnaces, etc.
Description
technical field [0001] The invention belongs to the field of metal materials, and relates to an ultra-high temperature electrothermal alloy and a preparation method thereof. Background technique [0002] After more than 50 years of development in my country's electrothermal alloy industry, its smelting, thermal processing, cold processing and heat treatment processes are relatively mature, and there are more and more manufacturers of electrothermal materials. However, as a product category, there are basically no new and better products for ultra-high temperature and high resistance electrothermal alloys, especially electrothermal alloys that can use temperatures above 1300 °C. 0Cr27Al7MO2 is commonly used in China, but because of its high work hardening rate during cold working, it is difficult to form a product, the scrap rate is extremely high, and the waste caused is also great. Therefore, the electric heating wires currently used in China at temperatures above 1300°C m...
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
Login to View More IPC IPC(8): C22C38/52C22C38/30C22C33/04
Inventor 李刚马国庆陶科李耐松王彦杰
Owner BEIJING SHOUGANG GITANE NEW MATERIALS