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

Heat treatment process of ZL116 alloy castings

A technology for ZL116 alloy castings, which is applied in the field of heat treatment of ZL116 alloy castings, and can solve the problems of large residual stress and unstable mechanical properties

Inactive Publication Date: 2012-02-15
SHENYANG AIRCRAFT CORP
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The residual stress of the alloy casting after quenching is large, and the mechanical properties are unstable. Therefore, in order to eliminate the internal stress of the casting and improve the stability of the mechanical properties, it is urgent to study and solve the influence of the heat treatment process on the performance of the casting.

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

[0011] A heat treatment process for ZL116 alloy castings, comprising the following steps:

[0012] 1) Inspection: Check whether the batch number of the casting furnace is the same as that of the sample furnace, and the pouring crystal and oil stains on the casting should be cleaned;

[0013] 2) Furnace loading: castings should be furnaced below 300°C and placed in the center of the furnace with gaps between each casting;

[0014] 3) Quenching: The temperature is raised to 530°C, and the temperature is kept for 16 hours, then the casting is immersed in water at 40°C, the transfer time is 10s, and the immersion time in water is 3 minutes;

[0015] 4) Aging treatment: the temperature is raised to 170°C, kept for 8 hours, and air-cooled.

Embodiment 2

[0017] A heat treatment process for ZL116 alloy castings, comprising the following steps:

[0018] 1) Inspection: Check whether the batch number of the casting furnace is the same as that of the sample furnace, and the pouring crystal and oil stains on the casting should be cleaned;

[0019] 2) Furnace loading: castings should be furnaced below 300°C and placed in the center of the furnace with gaps between each casting;

[0020] 3) Quenching: the temperature is raised to 540±5°C, and the temperature is kept for 16 hours, then the casting is immersed in water at 30°C, the transfer time does not exceed 6s, and the immersion time in water is 5 minutes;

[0021] 4) Aging treatment: temperature rises to 180°C, heat preservation for 8 hours, and air cooling.

[0022] Verified by the above examples, its tensile strength σ b ≥300, elongation δ≥2, hardness qualified.

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
elongationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a heat treatment process of ZL116 alloy castings. The heat treatment process is characterized by comprising the following steps: 1) checking, namely checking whether the batch numbers of a casting furnace and a sample furnace are same or not and cleaning coked crystals and greasy dirts on the castings; 2) charging, namely placing the castings at the center of the furnace below 300 DEG C and leaving gaps between the castings; 3) quenching, namely heating to 535+ / -5 DEG C, keeping the temperature for 16 hours and soaking the castings in 20-40 DEG C of water, wherein the transfer time is no more than 15s and the soaking time is no less than 2 minutes; and 4) performing aging treatment, namely heating to 175+ / -5 DEG C, keeping the temperature for 8 hours and performing air cooling. By adopting the heat treatment process, the strength of the ZL116 alloy castings can be increased, the elongation rate can be improved; and the comprehensive mechanical performance is better and more stable, the performance indexes of the technical requirements can be met and the residual stress of heat treatment can be eliminated better.

Description

technical field [0001] The invention relates to a ZL116 alloy casting heat treatment process, which is used for heat treating the ZL116 alloy to improve the mechanical properties of the casting and meet product quality requirements. Background technique [0002] ZL116 alloy is mainly used for bearing parts with complex structures and thin walls and parts with high airtightness requirements for long-term work below 200 °C, such as joysticks, arms, tee pipes, housings, etc. The alloy composition of ZL116 castings is relatively complex, and the types and quantities of alloying elements are relatively large. The shape change and cross-sectional shape and size of this alloy casting are various. The residual stress of the alloy casting after quenching is large, and the mechanical properties are unstable. Therefore, in order to eliminate the internal stress of the casting and improve the stability of the mechanical properties, it is urgent to study and solve the influence of the h...

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): C22F1/04
Inventor 任少梅
Owner SHENYANG AIRCRAFT CORP
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