Supercharge Your Innovation With Domain-Expert AI Agents!

Electron beam welding method for a gear assembly

A welding method and vacuum electron beam technology, applied in electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as out-of-tolerance runout, unfavorable heat dissipation, and inability to guarantee machining

Active Publication Date: 2021-06-08
HARBIN DONGAN ENGINE GRP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the bevel gear assembly is characterized by a small diameter (only φ36mm) and a large long-diameter ratio (about 7), this structure is not conducive to heat dissipation during the welding process, which will easily lead to excessive heat input, severe deformation of parts, and runout Out of tolerance, machining after welding cannot be guaranteed

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

[0044] The driven bevel gear assembly of an aero-engine center drive is made of 14CrMnSiNi2MoA. It is required that the length shrinkage of the gear after welding is controlled at about 0.1mm, and the runout variation of the tooth end surface and the gear shaft after welding is controlled at 0.015mm and 0.03mm respectively, and the internal quality of the weld is guaranteed. The specific steps are as follows:

[0045] 1. Ultrasonic cleaning of gear components to remove surface oil;

[0046] 2. Assemble the gear and the shaft, and the gap at the welding seam after assembly is 0.01mm;

[0047] 3. Electron beam welding is used to perform full-circle tack welding on the weld seam, and the tack welding process parameters are:

[0048] Acceleration voltage: 140KV

[0049] Positioning welding beam current: 4.0mA

[0050] Focused beam current: 1946mA

[0051] Welding speed: 12mm / s

[0052] Distance between workpiece and welding torch: 679mm

[0053] 4. Vacuum electron beam is us...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a vacuum electron beam welding method for a gear assembly. Starting from the positioning welding and beam coverage angle, the symmetrical positioning of the electron beam welding spot is changed to a small beam full-circle positioning welding, and at the same time, the arc starting / arc closing coverage angle is reduced. The method, while ensuring the internal quality of the weld, reduces the heat input, significantly reduces the post-weld deformation of the gear assembly, and completely solves the technical problem that the post-weld deformation affects subsequent machining.

Description

technical field [0001] The invention relates to an electron beam welding method, in particular to an electron beam welding method of a gear assembly, which can ensure the welding method of a gear assembly with a large length-to-diameter ratio, poor heat dissipation conditions, and difficult-to-control deformation after welding. Background technique [0002] Gear assemblies are commonly used transmission components in mechanical systems. With the increasing requirements of mechanical systems, higher requirements are placed on the material properties, welding strength and machining accuracy of gear components. For example, the welding of the bevel gear assembly used in an aero-engine is made of 14CrMnSiNi2MoA. It is required that the length shrinkage before and after welding is about 0.1mm, the runout change of the tooth end face is 0.015mm, and the runout change of the gear shaft is controlled at 0.03mm. Since the bevel gear assembly is characterized by a small diameter (onl...

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 Patents(China)
IPC IPC(8): B23K15/00
CPCB23K15/0006B23K15/0026B23K15/0033B23K15/0046
Inventor 郑欣宋健陈玉宝王广海
Owner HARBIN DONGAN ENGINE GRP
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