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

Laser cladding repairing method for end tooth wear or cracks of general high speed pump gear shafts

A technology of laser cladding and repair method, applied in metal material coating process, coating and other directions, can solve the problems of high price, affecting the production and economic benefits of enterprises, long procurement cycle, etc., achieving a small heat-affected zone and comprehensive repair. The effect of thorough, good metallurgical bonding

Active Publication Date: 2017-12-01
浙江翰德圣智能再制造技术有限公司
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these high-speed pump shafts are imported equipment components, the procurement cycle is extremely long, and domestic manufacturers cannot produce high-speed pump shafts that fully meet the standards, so the imported high-speed pump shafts are damaged, and it usually takes a long time to order to get a replacement. Parts, which greatly affect the production and economic benefits of the enterprise, or replace the entire set of high-speed pump equipment, need to pay a high price

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
  • Laser cladding repairing method for end tooth wear or cracks of general high speed pump gear shafts
  • Laser cladding repairing method for end tooth wear or cracks of general high speed pump gear shafts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] In this embodiment, the general-purpose high-speed pump gear shaft end tooth wear or crack laser cladding repair method includes the following steps:

[0030] (1) Determine the repair plan for the pump shaft according to the damage degree of the high-speed shaft;

[0031] (2) Remove the end teeth of the damaged high-speed gear shaft and process the mating surface;

[0032] (3) Make new end teeth according to the survey drawing;

[0033] (4) Thermally install the new end gear and shaft with temperature difference;

[0034] (5) Laser cladding welding;

[0035] (6) Relief of stress in the surfacing layer;

[0036] (7) Finishing.

[0037] In step (1), the high-speed shaft is disassembled in the high-speed pump, cleaned with acetone, and inspected for cracks, surface defects, dimensional accuracy and runout of related journals and gears to determine the repair plan. The runout value can be checked with a dial indicator on an ordinary lathe, and the amount cannot exceed ...

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
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of repairing of high speed pump shafts for petrochemical industry and relates to a laser cladding repairing method for end tooth wear or cracks of general high speed pump gear shafts. The method aims at repairing of parts with wear and cracks on end teeth in long-time running process and comprises the steps of firstly removing damaged end teeth and remanufacturing new end teeth, carrying out hot charging by utilizing the part size change caused by temperature difference, selecting stainless steel powder and wear-resistant Co-based alloy powder which have mechanical properties similar to those of a base material, carrying out cladding by adopting laser cladding process parameters, removing residual stress in cladded parts through a hammering method, finally recovering the parts to a design size through a precise mechanical processing method, thereby recovering the operational performance of the high speed pump gear shafts. The method disclosed by the invention has the advantages that in the laser cladding repairing process of the high speed gear pump shafts, the base material is maintained at a low temperature all the time during cladding and the part deformation rate is almost zero; and the obtained cladding layer is metallurgically combined with a matrix, the automatic efficiency is high and the cost is low.

Description

technical field [0001] The invention belongs to the field of repairing special high-speed pump shafts in the petrochemical industry, and relates to a method for repairing gear shaft end teeth wear or cracks by laser cladding of a general high-speed pump. Background technique [0002] my country's petrochemical industry has developed greatly in recent years. Most of the petrochemical industry uses imported equipment with high value. The life of parts is very important to the production of the petrochemical industry. If the equipment is shut down due to the damage of the parts, it means a huge economic loss, and because the order cycle of imported equipment is long, it will seriously affect the production of the enterprise. High-speed pumps are general-purpose equipment in the petrochemical industry, and the pump shaft is the most easily damaged part. To ensure that the operating unit does not stop during an overhaul period, it is necessary to ensure that the high-speed pump s...

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): C23C24/10B23P6/00
CPCB23P6/00C23C24/103
Inventor 韩旭谢玉江陈书林慧超曾增伟
Owner 浙江翰德圣智能再制造技术有限公司
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