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

High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof

A heat treatment method and stainless steel technology, applied in the field of heat treatment of metal materials, can solve the problems of low production efficiency and long time consumption, and achieve the effects of improving production efficiency, convenient production and implementation, and improving comprehensive mechanical properties.

Active Publication Date: 2020-05-08
GUANGDONG INST OF NEW MATERIALS
View PDF19 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-pressure heat treatment method for 17-4PH stainless steel to solve the residual pores in the existing 17-4PH stainless steel parts, and because it must be completed in different furnaces, it takes a long time and the production efficiency is low. lower question

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
  • High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof
  • High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof
  • High-performance 17-4PH stainless steel material and high-pressure heat treatment method, manufacturing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The preparation method of a kind of high-performance 17-4PH stainless steel material that the embodiment of the present invention provides, comprises:

[0041] 17-4PH stainless steel material is obtained by additive manufacturing;

[0042] Then, the 17-4PH stainless steel material is heat-treated using the high-pressure heat treatment method for the 17-4PH stainless steel material provided in the embodiment of the present invention.

[0043] The high-performance 17-4PH stainless steel material provided by the embodiment of the present invention or prepared by the method provided by the embodiment has good comprehensive mechanical properties and can be widely used in aerospace, petrochemical, nuclear industry and other fields.

Embodiment 1

[0046]A high-pressure heat treatment method for 17-4PH stainless steel material, comprising the following steps:

[0047] High-pressure solution treatment: place the 17-4PH stainless steel material obtained by additive manufacturing in a hot isostatic pressing cylinder, and under the condition of an initial pressure of 30MPa, increase the temperature and pressurize at the same time, the heating rate is 20°C / min, and heat to 1040 ℃, while increasing the air pressure of the cylinder to 150MPa, heat preservation and pressure holding for 2 hours; then cool down to 480℃ at a cooling rate of 1000℃ / min under high pressure;

[0048] High-pressure aging treatment: heat preservation at 480°C for 4 hours, then cool to room temperature at 1000°C / min under high pressure;

[0049] Among them, during the high-pressure solid solution and high-pressure aging treatment of 17-4PH stainless steel materials, the samples are always placed in the hot isostatic pressing cylinder, and the cylinder pre...

Embodiment 2

[0052] A high-pressure heat treatment method for 17-4PH stainless steel material, comprising the following steps:

[0053] High-pressure solution treatment: place the 17-4PH stainless steel material obtained by additive manufacturing in a hot isostatic pressing cylinder, and under the condition of an initial pressure of 30MPa, increase the temperature and pressurize at the same time, the heating rate is 20°C / min, and heat to 1040 ℃, at the same time, the air pressure of the cylinder is increased to 150MPa, and the temperature is maintained for 2 hours; then the temperature is lowered to 480℃ at a cooling rate of 10℃ / min under high pressure;

[0054] High-pressure aging treatment: heat preservation at 480°C for 8 hours, then cool to room temperature at 1000°C / min under high pressure;

[0055] Among them, during the high-pressure solid solution and high-pressure aging treatment of 17-4PH stainless steel materials, the samples are always placed in the hot isostatic pressing cylin...

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

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of heat treatment of metal materials, and discloses a high-performance 17-4PH stainless steel material and a high-pressure heat treatment method, a manufacturing method and application thereof. The high-pressure heat treatment method of the 17-4PH stainless steel material comprises the steps that the 17-4PH stainless steel material obtained through additive manufacturing is subjected to heat preservation and pressure maintaining for at least 100 min under the conditions of 1000-1100 DEG C and at least 140 MPa, then cooled to 450-550 DEG C, subjectedto heat preservation for 1-8 h and then cooled to room temperature, and air pressure in the cooling process is controlled to be 100 MPa or above. The high-performance 17-4PH stainless steel materialis obtained by adopting the heat treatment method. The material is good in comprehensive mechanical property and suitable for being applied to aerospace, petrochemical industry and nuclear industry. The preparation method of the high-performance 17-4PH stainless steel material comprises the steps that the 17-4PH stainless steel material is obtained through additive manufacturing; and then heat treatment is carried out by adopting the heat treatment method.

Description

technical field [0001] The invention relates to the technical field of heat treatment of metal materials, in particular to a high-performance 17-4PH stainless steel material and its high-pressure heat treatment method, manufacturing method and application. Background technique [0002] 17-4PH (0Cr 17 Ni 4 Cu 4 Nb) is a martensitic precipitation hardening stainless steel with good comprehensive properties such as strength, toughness, plasticity and corrosion resistance. Therefore, it has been widely used in aerospace, petrochemical, nuclear industry and other fields. With the development of additive manufacturing technology, 17-4PH stainless steel has gained wide attention in the fields of conformal cooling molds and other fields. However, to obtain excellent comprehensive mechanical properties, 17-4PH stainless steel must undergo appropriate heat treatment. At present, the heat treatment system for this type of stainless steel mainly includes solution and aging treatment...

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): C21D7/13C21D1/78C21D6/00
CPCC21D7/13C21D1/78C21D6/00
Inventor 施麒秦奉刘辛
Owner GUANGDONG INST OF NEW MATERIALS
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