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

High-temperature-resistant corrosion-resistant alloy steel for temperature sensor and preparation method thereof

A temperature sensor, high temperature resistant technology, applied in the field of sensor materials, which can solve the problems of environmental pollution, severe internal erosion, and easy damage of alloy steel protection tubes.

Inactive Publication Date: 2017-06-16
ANHUI RUIXIN AUTOMATION INSTR
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Alloy steel has been widely used in sensors, steel pipes and other fields; in the use of temperature sensors, it is often used to make protective tubes for sensors, but in some high-temperature occasions, such as measuring the mixed temperature of primary wind coal powder, coal grinding, etc. Due to the strong corrosion of sulfide at the same time, the temperature sensors at the measuring points such as the slag cooler of the machine and the temperature of the flue gas inlet and outlet are extremely scoured inside, and the existing alloy steel protection tube is easily damaged during operation, causing the temperature sensor The service life is short, once the temperature is out of control, it will cause inestimable environmental pollution and economic loss

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high temperature and corrosion resistant alloy steel for a temperature sensor proposed by the present invention, its chemical composition includes: C: 0.35%, Si: 1.2%, Mn: 1%, Cr: 3%, Zr: 0.1%, Ni : 1%, Mo: 1.2%, V: 0.5%, La+Ta: 0.13%, Ti: 0.01%, B: 0.25%, Sn: 0.01%, Nb: 0.1%, Rb: 0.01%, S≤0.004% , P≤0.004%, Te: 0.08%, and the balance is iron and unavoidable impurities.

[0018] The invention also proposes a method for preparing the high-temperature-resistant and corrosion-resistant alloy steel for the temperature sensor, which includes the following steps: adding various raw materials into an electric furnace to melt to obtain molten steel, and obtaining a billet after pouring, and keeping the billet at 1350°C for 0.5h , and then cooled at 85°C for 35 minutes, then vacuum tempered at 680°C for 2h, and cooled to room temperature to obtain the high temperature and corrosion resistant alloy steel for the temperature sensor.

Embodiment 2

[0020] A high temperature and corrosion resistant alloy steel for a temperature sensor proposed by the present invention, its chemical composition includes: C: 0.2%, Si: 1.8%, Mn: 0.5%, Cr: 6%, Zr: 0.02%, Ni : 1.5%, Mo: 0.8%, V: 0.8%, La+Ta: 0.05%, Ti: 0.1%, B: 0.1%, Sn: 0.1%, Nb: 0.02%, Rb: 0.05%, S≤0.004% , P≤0.004%, Te: 0.01%, and the balance is iron and unavoidable impurities.

[0021] The invention also proposes a method for preparing the high-temperature-resistant and corrosion-resistant alloy steel for the temperature sensor, which includes the following steps: adding various raw materials into an electric furnace to melt to obtain molten steel, obtaining a billet after casting, and keeping the billet at 1250°C for 1.5 hours , and then cooled at a temperature of 60°C for 55min, then vacuum tempered at 655°C for 3.5h, and cooled to room temperature to obtain the high-temperature-resistant and corrosion-resistant alloy steel for the temperature sensor.

Embodiment 3

[0023] A high temperature and corrosion resistant alloy steel for a temperature sensor proposed by the present invention, its chemical composition includes: C: 0.24%, Si: 1.7%, Mn: 0.6%, Cr: 3.7%, Zr: 0.06%, Ni : 1.36%, Mo: 1%, V: 0.57%, La: 0.04%, Ta: 0.06%, Ti: 0.06%, B: 0.24%, Sn: 0.026%, Nb: 0.08%, Rb: 0.02%, S ≤0.004%, P≤0.004%, Te: 0.06%, the balance is iron and unavoidable impurities.

[0024] The invention also proposes a method for preparing the high-temperature-resistant and corrosion-resistant alloy steel for the temperature sensor, which includes the following steps: adding various raw materials into an electric furnace to melt to obtain molten steel, obtaining a billet after casting, and keeping the billet at 1260°C for 1.3 hours , then cooled at a temperature of 70°C for 50min, then vacuum tempered at 660°C for 3.2h, taken out of the furnace and cooled to room temperature, and obtained the high temperature and corrosion resistant alloy steel for the temperature s...

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
Current densityaaaaaaaaaa
Current densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses high-temperature-resistant corrosion-resistant alloy steel for a temperature sensor and a preparation method thereof. The alloy steel comprises the following chemical components by weight: 0.2 to 0.35% of C, 1.2 to 1.8% of Si, 0.5 to 1% of Mn, 3 to 6% of Cr, 0.02 to 0.1% of Zr, 1 to 1.5% of Ni, 0.8 to 1.2% of Mo, 0.5 to 0.8% of V, 0.05 to 0.13% of La and Ta, 0.01 to 0.1% of Ti, 0.1 to 0.25% of B, 0.01 to 0.1% of Sn, 0.02 to 0.1% of Nb, 0.01 to 0.05% of Rb, no more than 0.004% of S, no more than 0.004% of P and 0.01 to 0.08% of Te, with the balance being iron and unavoidable impurities.

Description

technical field [0001] The invention relates to the technical field of sensor materials, in particular to a high-temperature-resistant and corrosion-resistant alloy steel for a temperature sensor and a preparation method thereof. Background technique [0002] Alloy steel has been widely used in sensors, steel pipes and other fields; in the use of temperature sensors, it is often used to make protective tubes for sensors, but in some high-temperature occasions, such as measuring the mixed temperature of primary wind coal powder, coal grinding, etc. Due to the strong corrosion of sulfide at the same time, the temperature sensors at the measuring points such as the slag cooler of the machine and the temperature of the flue gas inlet and outlet are extremely scoured inside, and the existing alloy steel protection tube is easily damaged during operation, causing the temperature sensor The service life is short, and once the temperature is out of control, it will cause inestimable...

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): C22C38/54C22C38/50C22C38/44C22C38/46C22C38/48C22C38/60C22C38/04C22C38/02C21D1/22C25D5/14C25D3/12C25D5/18
CPCC22C38/54C21D1/22C21D2211/008C22C38/002C22C38/005C22C38/008C22C38/02C22C38/04C22C38/34C22C38/44C22C38/46C22C38/48C22C38/50C22C38/60C25D3/12C25D5/14C25D5/18
Inventor 高凤谊
Owner ANHUI RUIXIN AUTOMATION INSTR
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com