Corrosion-resisting and high-temperature-resisting gas safety blow off valve

A technology of high temperature resistance and corrosion resistance, which is applied in the field of gas equipment, can solve the problems that hinder the stable long-term operation of the production system, damage the sealing system, increase corrosion resistance, etc., achieve enhanced contact fatigue strength and impact toughness, good performance, and reduce corrosion resistance. The effect of corrosion

Inactive Publication Date: 2018-05-22
SUZHOU NIUDONG PRECISION MFG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Valves are widely used in daily life. The existing valves are generally metal valves. Because valves play a vital role in industrial production, they need to be replaced or repaired regularly. However, in industrial production, valve leakage often leads to the entire production Stopped, causing huge losses, hindering the stable long-term operation of the production system, the release valve has been in harsh working conditions for a long time, and the corrosion is serious, thus destroying the entire sealing system, causing a great safety hazard due to the release of gas in the gas pipeline , so it is important to increase its corrosion resistance when

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a corrosion-resistant and high-temperature resistant gas safety release valve, which is made of the following components in mass percentage: C: 0.95%, Mn: 0.57%, Ti: 0.26%, Cr: 0.42%, Si: 0.58%, P: ≤0.002%, Al: 1.23%, Co: 0.26%, Mo: 0.25%, S: 0.0023%, Ca: 0.11%, H: 0.02, Mg: 0.33%, Ni: 0.85%, Cu: 0.15%, Rare earth metals: 0.03%, the balance is Fe and unavoidable impurities;

[0023] Among them, rare earth metals include the following components by mass percentage: Dy: 11%, Ce: 15%, Pr: 9%, Nd: 5%, Pm: 7%, Sm: 8%, Eu: 3%, Gd: 7 %, the balance is La.

[0024] This embodiment provides a corrosion-resistant and high-temperature resistant gas safety relief valve, which specifically includes the following steps:

[0025] Step 1: Smelting: put other ingredients except rare earth metals into the melting furnace, raise the temperature to 450°C, add half of the rare earth metals, stir evenly, raise the temperature to 1110°C for a smelting, and then pass...

Embodiment 2

[0033] This embodiment provides a corrosion-resistant and high-temperature resistant gas safety relief valve, which is made of the following components in mass percentage: C: 1.1%, Mn: 0.63%, Ti: 0.31%, Cr: 0.33-0.56%, Si: 0.61 %, P: ≤0.0015%, Al: 1.24%, Co: 0.34%, Mo: 0.28%, S: 0.002%, Ca: 0.13%, H: 0.021, Mg: 0.41%, Ni: 0.88%, Cu: 0.17 %, rare earth metals: 0.05%, the balance is Fe and unavoidable impurities;

[0034] Among them, rare earth metals include the following components by mass percentage: Dy: 12%, Ce: 16%, Pr: 11%, Nd: 7%, Pm: 8%, Sm: 10%, Eu: 5%, Gd: 8 %, the balance is La.

[0035] This embodiment provides a corrosion-resistant and high-temperature resistant gas safety relief valve, which specifically includes the following steps:

[0036] Step 1: Smelting: Put other ingredients except rare earth metals into the melting furnace, raise the temperature to 480°C, add half of the rare earth metals, stir evenly, raise the temperature to 1130°C for a smelting, and t...

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PUM

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Abstract

The invention discloses a corrosion-resisting and high-temperature-resisting gas safety blow off valve. The corrosion-resisting and high-temperature-resisting gas safety blow off valve is characterized by being prepared through following components including, by mass percent, 0.8%-1.3% of C, 0.5%-0.75% of Mn, 0.23%-0.33% of Ti, 0.33%-0.56% of Cr, 0.55%-0.63% of Si, smaller than or equal to 0.003%of P, 1.23%-1.25% of Al, 0.12%-0.46% of Co, 0.25%-0.31% of Mo, 0.001%-0.004% of S, 0.1%-0.15% of Ca, 0.02%-0.022% of H, 0.21%-0.45% of Mg, 0.85%-0.93% of Ni, 0.14%-0.18% of Cu, 0.02%-0.08% of rare earth metal, and the balance Fe and inevitable impurities. The corrosion-resisting and high-temperature-resisting gas safety blow off valve is good in corrosion resistance and high temperature resistance.

Description

technical field [0001] The invention relates to the field of gas equipment, in particular to a corrosion-resistant and high-temperature resistant gas safety release valve. Background technique [0002] Valves are widely used in daily life. The existing valves are generally metal valves. Because valves play a vital role in industrial production, they need to be replaced or repaired regularly. However, in industrial production, valve leakage often leads to the entire production Stopped, causing huge losses, hindering the stable long-term operation of the production system, the release valve has been in harsh working conditions for a long time, and the corrosion is serious, thus destroying the entire sealing system, causing a great safety hazard due to the release of gas in the gas pipeline , so it is important to increase its corrosion resistance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a corrosion-resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/42C22C38/50C22C38/02C22C38/04C22C38/06C22C38/52C22C33/04F16K51/00
CPCC22C38/42C22C33/04C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/50C22C38/52F16K51/00
Inventor 冉宏敏
Owner SUZHOU NIUDONG PRECISION MFG TECH CO LTD
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