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Treatment process for pressure-proof and corrosion-resistant pipe for high-pressure heat exchanger

A treatment process and heat exchanger technology, applied in the direction of manufacturing tools, metal processing equipment, welding/cutting media/materials, etc. The alloy has uniform structure and good mechanical compatibility.

Inactive Publication Date: 2015-08-26
JIANGSU JINYUAN TENGFENG HEAT EXCHANGE EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is reported that many researchers have added Ti elements with excellent corrosion resistance to magnesium alloys through various methods to prepare Mg-Ti binary alloys with improved corrosion resistance; however, as a As a new type of alloy material, people have not yet fully realized the many properties and characteristics of titanium-magnesium alloys. At present, most researchers mainly study their hydrogen storage properties and photoelectric properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The treatment process of a pressure-resistant and corrosion-resistant pipe for a high-pressure heat exchanger provided in this embodiment includes the following specific steps:

[0041] a: Alloy materials are selected according to requirements, and the weight percentage of each component is C: 0.25-0.28%, Si: 0.26-0.28%, Mn: 1.0-1.2%, P: 0.020-0.030%, Al: 0.7-0.9%, Cr: 0.35-0.45%, Ni: 0.45-0.52%, Mo: 0.15-0.22%, V: 0.02-0.03%, W: 0.05-0.10%, Zn: 12-15%, the rest is Fe and trace impurities;

[0042] b: put the above alloy material into the melting furnace, and put the rare earth element into the melting furnace, the total weight of the rare earth element is 0.10-0.125% of the above alloy material; the rare earth contains the following components by weight percentage: Gd: 15- 18%, Pr: 3-5%, Dy: 7-9%, Ac: 12.5-12.8%, Nd: 15-20%, Sm: 11-13%, and the balance is La;

[0043] c: The temperature of the smelting furnace is raised to 1510°C, fully stirred after the furnace charg...

Embodiment 2

[0056] The treatment process of a pressure-resistant and corrosion-resistant pipe for a high-pressure heat exchanger provided in this embodiment includes the following specific steps:

[0057] a: Select the alloy material according to the requirements, and the weight percentage of each component is C: 0.26%, Si: 0.26%, Mn: 1.1%, P: 0.025%, Al: 0.8%, Cr: 0.40%, Ni: 0., 50%, Mo: 0.18%, V: 0.025%, W: 0.06%, Zn: 12.5%, the rest is Fe and trace impurities;

[0058] b: put the above alloy material into the melting furnace, and put the rare earth element into the melting furnace, the total weight of the rare earth element is 0.10-0.125% of the above alloy material; the rare earth contains the following components by weight percentage: Gd: 16% , Pr: 4%, Dy: 8%, Ac: 12.6%, Nd: 16%, Sm: 12%, and the balance is La;

[0059] c: The temperature of the smelting furnace is raised to 1525°C, fully stirred after the furnace charge is completely melted, and kept at 1525°C for 2 hours, the allo...

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Abstract

The invention discloses a treatment process for a pressure-proof and corrosion-resistant pipe for a high-pressure heat exchanger. An alloy material is selected according to a requirement, wherein the alloy material comprises the following components in percentage by weight: 0.25 to 0.28 percent of C, 0.26 to 0.28 percent of Si, 1.0 to 1.2 percent of Mn, 0.020 to 0.030 percent of P, 0.7 to 0.9 percent of Al, 0.35 to 0.45 percent of Cr, 0.45 to 0.52 percent of Ni, 0.15 to 0.22 percent of Mo, 0.02 to 0.03 percent of V, 0.05 to 0.10 percent of W, 12 to 15 percent of Zn and the balance of Fe and trace impurities; in addition, a Ti-Mg alloy material with the same mass is added twice in a treatment process. According to the treatment process for the pressure-proof and corrosion-resistant pipe for the high-pressure heat exchanger, uniform alloy structure, high density and the characteristics of high mechanical compatibility and high corrosion resistance are achieved.

Description

technical field [0001] The invention relates to the technical field of manufacturing heat exchangers, in particular to a treatment process for pressure-resistant and corrosion-resistant pipes used in high-pressure heat exchangers. Background technique [0002] According to reports, many researchers have added Ti elements with excellent corrosion resistance to magnesium alloys through various methods to prepare Mg-Ti binary alloys with improved corrosion resistance; however, as a As a new type of alloy material, people have not yet fully realized the many properties and characteristics of titanium-magnesium alloys. At present, most researchers mainly study their hydrogen storage properties and photoelectric properties. [0003] The Ti-Mg alloy is prepared by mechanical alloying. Titanium powder and magnesium powder are used as raw materials, mixed into a certain proportion of mixture, put into a ball mill pot together with the corresponding proportion of balls, and put into a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/46C22C38/50C22C33/06B23K35/30
Inventor 李明祥朱冬宏陈道祥
Owner JIANGSU JINYUAN TENGFENG HEAT EXCHANGE EQUIP CO LTD
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