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

High-temperature-resisting forge piece for turbine and forging method of high-temperature-resisting forge piece

A high temperature resistant, steam turbine technology, applied in metal processing equipment and other directions, can solve the problems of inability to meet the mechanical properties of products, poor forgeability, high high temperature hardness, and achieve the effect of reducing the phenomenon of easy cracking

Inactive Publication Date: 2018-02-16
JIANGYIN FANGYUAN RINGLIKE FORGING & FLANGE
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the high temperature resistant forgings for steam turbines are mainly composed of C: 0.18-0.24%, Si: 0.10-0.50%, Mn: 0.30-0.80%, P: ≤0.025%, S: ≤0.020%, Cr: 11.00- 12.5%, Mo: 0.80-1.20%, Ni: 0.30-0.80%, V: 0.25-0.35%, W ≤0.60%, the existing ingredients cannot meet the mechanical properties of the product in three directions. High-temperature forgings, this type of steel material has high high-temperature hardness and poor forgeability
Forging temperature range is small 1150-950℃, forging is easy to crack

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 Construction

[0018] The present invention will be further described below in combination with specific embodiments.

[0019] The invention discloses a high-temperature-resistant forging for steam turbines. The components include: C: 0.20-0.24%, Si: 0.10-0.50%, Mn: 0.50-0.80%, P: ≤0.025%, S: ≤ 0.020%, Cr: 11.8-12.5%, Mo: 1.0-1.20%, Ni: 0.60-0.80%, V: 0.25-0.35%, Al: 0.02-0.05%, W: ≤0.60%, Nb0.02-0.05% , N: 80-180PPm, the rest is Fe and unavoidable impurities.

[0020] A method for forging high temperature resistant forgings for steam turbines, comprising the following steps:

[0021] S1: Blanking: remove the uneven structure at the end of the Φ400mm round steel, measure 731mm for cutting;

[0022] S2: Heating: put the billet into a natural gas heating furnace for heating, first heat up to 800°C with the furnace and keep it for 2 hours, then heat it up to 1180°C for 3 hours with the furnace and then take it out of the furnace;

[0023] S3: Forging: Forging is carried out with the aid of a...

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 provides a high-temperature-resisting forge piece for a turbine and a forging method of the high-temperature-resisting forge piece. The high-temperature-resisting forge piece for the turbine comprises, by weight percent, 0.20%-0.24% of C, 0.10%-0.50% of Si, 0.50%-0.80% of Mn, smaller than or equal to 0.025% of P, smaller than or equal to 0.020% of S, 11.8%-12.5% of Cr, 1.0%-1.20% ofMo, 0.60%-0.80% of Ni, 0.25%-0.35% of V, 0.02%-0.05% of Al, smaller than or equal to 0.60% of W, 0.02%-0.05% of Nb, and the balance Fe and inevitable impurities, wherein the concentration of N is 80 PPm-180 PPm.

Description

technical field [0001] The invention relates to a high temperature resistant forging for a steam turbine and a forging method thereof. Background technique [0002] In the prior art, the high temperature resistant forgings for steam turbines are mainly composed of C: 0.18-0.24%, Si: 0.10-0.50%, Mn: 0.30-0.80%, P: ≤0.025%, S: ≤0.020%, Cr: 11.00- 12.5%, Mo: 0.80-1.20%, Ni: 0.30-0.80%, V: 0.25-0.35%, W ≤0.60%, the existing ingredients cannot meet the mechanical properties of the product in three directions. High-temperature forgings, this type of steel material has high high-temperature hardness and poor forgeability. The forging temperature range is as small as 1150-950°C, and the forging is easy to crack. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above technology, thereby providing a high temperature resistant forging for a steam turbine, which can satisfy the mechanical properties of the product in thre...

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 Applications(China)
IPC IPC(8): B21J5/00C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48C21D8/06
CPCB21J5/002C21D8/065C22C38/001C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48
Inventor 赵清赵元俊赵春良
Owner JIANGYIN FANGYUAN RINGLIKE FORGING & FLANGE
Features
  • Generate Ideas
  • 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