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

A solid solution strengthened high temperature resistant oxidation resistant alloy

A technology of high temperature oxidation resistance and solid solution strengthening, applied in the field of metal materials, can solve the problems of low service life of materials, no obvious improvement, poor carburization resistance, etc.

Active Publication Date: 2020-07-07
CHONGQING MATERIALS RES INST
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned alloys and methods have the disadvantages of relatively complex production technology, many kinds of added elements, and high cost, and still cannot solve the failure problem of alloy materials under the action of carbon-containing atmosphere and complex stress, and the service life of materials is low. The problem has not been significantly improved
On the other hand, when Ni and Cr continue to increase to nickel-based alloys, although the performance of high temperature resistance and oxidation resistance is significantly improved, the performance of carburization resistance is not good, and its popularization and application are limited due to high cost.

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
  • A solid solution strengthened high temperature resistant oxidation resistant alloy
  • A solid solution strengthened high temperature resistant oxidation resistant alloy
  • A solid solution strengthened high temperature resistant oxidation resistant alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take each component in Example 1, adopt vacuum induction melting alloy 100kg, cast into a Φ90mm round bar, then electroslag remelt into a Φ160mm steel ingot, and make a Φ80mm round bar through forging, and the bar is machined to wear The tube billet is made into a Φ27×2.5mm seamless tube through hot rolling, tube drawing / rolling, solution heat treatment, and finally machined and welded to make a thermocouple protection tube for special alloy forging heating furnace The temperature is measured in the furnace, the long-term use temperature is 1100~1200 ℃, and the service life is 48 months.

Embodiment 2

[0038] Take each component in Example 2, adopt vacuum induction melting alloy 1000kg, cast into a round bar of Φ170mm, then electroslag remelt into a steel ingot of Φ300mm, and then draw and forge a round bar of Φ80mm through a quick forging machine. It is processed into an extruded tube billet, and then made into a Φ25×5.0mm seamless tube through hot extrusion, tube drawing / rolling, and solution heat treatment, and finally machined and welded to make a thermocouple protection tube for The temperature of the incinerator chamber is measured. The operating environment contains a large amount of chemical elements such as carbon and sulfur. The long-term working temperature is about 1100°C, and the service life is 12 months.

Embodiment 3

[0040] The Φ25×5.0 protection tube made in Example 2 is used to make a thermocouple for measuring the temperature in the coal chemical reformer. Although the environment in the furnace is relatively clean, it contains a certain amount of water vapor and oxygen, and the pressure is about 2.0 MPa. The long-term working temperature is about 1100 ℃, and the service life is 12 months.

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

No PUM Login to View More

Abstract

The invention relates to a solid solution strengthened high temperature oxidation resistant carburizing alloy. The solid solution strengthened high temperature oxidation resistant carburizing alloy comprises Fe, Ni, Cr, Si, Al, Mn, C, N, V, Zr, Nb, Mg, Ca and other elements. The solid solution strengthened high temperature oxidation resistant carburizing alloy adopts a vacuum induction melting plus electroslag remelting double smelting process, and is obtained through a forging / hot rolling forming, a solid solution heat treatment and the like. Compared with the existing heat-resistant alloys,the solid solution strengthened high temperature oxidation resistant carburizing alloy has the same high strength and tough plasticity, better corrosion resistance, and excellent oxidation resistanceand carburization resistance. The solid solution strengthened high temperature oxidation resistant carburizing alloy can be used as a temperature sensor external protection tube and an important component in the furnace under a high-temperature carbon-containing atmosphere, and can also be made into other bars, plates, strips, and can be used for the production of similar environment parts and tools in the fields of chemical engineering and energy.

Description

technical field [0001] The invention relates to a metal material, in particular to a solid-solution-strengthened high-temperature-resistant, oxygen-resistant and carburizing alloy. Background technique [0002] The temperature measurement in the combustion furnace is an important engineering technology. Accurately measuring the temperature of the target area has important guiding significance for the control of the reaction process and the optimization of process parameters. However, changes in the furnace atmosphere, temperature and pressure have a great impact on the service life of the thermocouple protection tube. At present, the alloy material protection tube used in the high-temperature furnace with a carbon-containing atmosphere has a very low service life, and its performance is not ideal. Frequent replacement seriously affects the utilization rate of equipment. Harsh operating environment requires alloy materials to work at high temperature, oxidation and carburizi...

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): C22C30/00
CPCC22C30/00C22C38/001C22C38/002C22C38/04C22C38/06C22C38/34C22C38/46C22C38/48C22C38/50
Inventor 刘海定王东哲万红黄国平刘应龙陈登华唐瑞王剑星张栋
Owner CHONGQING MATERIALS RES INST