Supercharge Your Innovation With Domain-Expert AI Agents!

Heat treatment process for improving strength of PH13-8Mo stainless steel material

A stainless steel and process technology, which is applied in the field of heat treatment process to improve the strength of PH13-8Mo materials, can solve the problems of inability to austenite transformation, and achieve the effects of high cooling rate, simple operation and lower production cost.

Inactive Publication Date: 2014-03-26
WUXI TURBINE BLADE
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low Ms point and Mf point of PH13-8Mo stainless steel, austenite cannot be completely transformed into martensite at room temperature

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

[0014] First, carry out solid solution treatment on the PH13-8Mo stainless steel material, the solution temperature is 925°C, and air-cool after holding for 1 hour; then use the liquid nitrogen gasification method to carry out the cold treatment on the PH13-8Mo stainless steel material, and the liquid nitrogen gasification cold treatment temperature is - 1°C, the cold treatment holding time is 30 minutes; finally, the PH13-8Mo stainless steel material is subjected to aging treatment, the aging heating temperature is 540°C, and air cooling after holding for 4 hours.

Embodiment 2

[0016] First, carry out solid solution treatment on the PH13-8Mo stainless steel material, the solution temperature is 925°C, and air-cool after holding for 1 hour; then use the liquid nitrogen gasification method to carry out the cold treatment on the PH13-8Mo stainless steel material, and the liquid nitrogen gasification cold treatment temperature is - 50°C, the cold treatment holding time is 120 minutes; finally, the PH13-8Mo stainless steel material is subjected to aging treatment, the aging heating temperature is 550°C, and air cooling is performed after holding for 4 hours.

Embodiment 3

[0018] First, carry out solid solution treatment on the PH13-8Mo stainless steel material, the solution temperature is 925°C, and air-cool after holding for 1 hour; then use the liquid nitrogen gasification method to carry out the cold treatment on the PH13-8Mo stainless steel material, and the liquid nitrogen gasification cold treatment temperature is - 26°C, the cold treatment holding time is 75 minutes; finally, the PH13-8Mo stainless steel material is subjected to aging treatment, the aging heating temperature is 530°C, and air cooling after holding for 4 hours.

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 heat treatment process for improving strength of a PH13-8Mo stainless steel material. The heat treatment process can transform more residual austenite into martensite, so as to improve the strength of the PH13-8Mo stainless steel material. The heat treatment process comprises the steps of carrying out solution treatment on the PH13-8Mo stainless steel material firstly and then carrying out aging treatment of the PH13-8Mo stainless steel material; the heat treatment process is characterized in that: cold treatment is performed on the PH13-8Mo stainless steel material between the solution treatment and the aging treatment.

Description

technical field [0001] The present invention relates to the field of heat treatment process for large steam turbine blades, especially to the field of heat treatment process for large steam turbine blades made of PH13-8Mo material, specifically a heat treatment process for improving the strength of PH13-8Mo material. Background technique [0002] PH13-8Mo stainless steel is an American precipitation-hardening stainless steel, which is a high-strength martensitic precipitation-hardening stainless steel that adopts double vacuum smelting. The outstanding feature of this steel is that in addition to high strength, it also has excellent fracture toughness, good transverse mechanical properties and stress corrosion resistance in marine environments. Due to its good comprehensive properties, this stainless steel material has been widely used in aerospace and nuclear reactors. And petrochemical and other fields, such as cold heading and machined fasteners, aircraft components, reac...

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): C21D6/00
Inventor 门若男
Owner WUXI TURBINE BLADE
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