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

Chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube and centrifugal casting production method thereof

A centrifugal casting, nickel alloy technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of long delivery cycle, high production cost, high price, etc., to overcome poor fluidity and improve densification. sexual effect

Active Publication Date: 2013-11-27
QINGDAO NPA IND
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The alloy furnace tube required for petrochemical high-temperature equipment needs to be sufficiently resistant to metal dust corrosion and hydrogen corrosion. At present, alloy furnace tubes that can resist metal dust corrosion and hydrogen corrosion are produced. The more reliable alloy material is 602CA, which is not currently available in China. Manufacturers who produce this kind of material, ordering the material abroad is not only expensive but also has a long lead time; using 602CA material to produce alloy furnace tubes adopts rolling method, not only the process is complicated, but also the production cost is high

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
  • Chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube and centrifugal casting production method thereof
  • Chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube and centrifugal casting production method thereof
  • Chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube and centrifugal casting production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] refer to Figure 1-Figure 4 , the chromium, nickel alloy anti-high temperature dust corrosion corrosion furnace tube and its centrifugal casting production method of the present embodiment, the chemical composition content of the chromium, nickel alloy anti high temperature dust corrosion corrosion furnace tube is as follows: Si: 0.3%-0.5%, Mn : 0.3%-0.5%, P≤0.02%, S≤0.01%, Cr: 24%-26%, Ni: 59.3%-65.5%, Mo≤0.5%, Cu: 0.03%-0.05%, Al: 1.8% -2.4%, the balance is microalloying elements Ti, Zr, Re. The mechanical properties of chromium and nickel alloy anti-high temperature dust corrosion corrosion furnace tubes are as follows: Normal temperature mechanical properties: σ s ≥250 MPa, σ b ≥450 MPa, δ 5 ≥15%; tensile properties at 700°C: σ b ≥170 MPa, δ 5 ≥20%. The centrifugal casting production method of the new-type chromium and nickel alloy anti-high temperature dust corrosion corrosion furnace tube includes alloy smelting and centrifugal casting. , ferrosilicon, ferr...

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 discloses a chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube and a centrifugal casting production method thereof. The chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube comprises the following chemical components in percentage by weight: 0.3%-0.5% of Si, 0.3%-0.5% of Mn, not more than 0.02% of P, not more than 0.01% of S, 24%-26% of Cr, 59.3%-65.5% of Ni, not more than 0.5% of Mo, 0.03%-0.05% of Cu, 1.8%-2.4% of Al, and the balance of micro-alloying elements including Ti, Zr and Re. The mechanical performances of the chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube are as follows: the normal-temperature mechanical performances are as follows: the sigma s is not lower than 250 MPa, the sigma b is not lower than 450 MPa and the delta 5 is not lower than 15%; the tensile properties under the temperature condition of 700 DEG C are as follows: the sigma b is not lower than 170 MPa, and the delta 5 is not lower than 20%. The chromium-nickel alloy high-temperature dusting corrosion resistance furnace tube can be used for replacing an imported rolled 602CA alloy furnace tube, so that a problem that a metal dusting corrosion and hydrogen corrosion resistant alloy furnace tube is needed for a petrochemical high-temperature device is solved, and therefore, a methanol device can be used for producing methanol by utilizing waste gas and tail gas recycling.

Description

[0001] technical field [0002] The invention belongs to the technical field of high-performance alloy furnace tubes, and in particular relates to a novel chromium-nickel alloy anti-high-temperature dust-corrosion furnace tube and a production method thereof. [0003] Background technique [0004] The alloy furnace tube required for petrochemical high-temperature equipment needs to be sufficiently resistant to metal dust corrosion and hydrogen corrosion. At present, alloy furnace tubes that can resist metal dust corrosion and hydrogen corrosion are produced. The more reliable alloy material is 602CA, which is not currently available in China. Manufacturers who produce this material order the material from abroad, which is not only expensive but also has a long delivery period; the production of alloy furnace tubes using 602CA material adopts a rolling method, which not only has a complicated process, but also has high production costs. [0005] Contents of the invention ...

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): C22C19/05C22C1/03B22D13/02F16L9/02
Inventor 吴永华
Owner QINGDAO NPA IND
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