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

Cavitation-corrosion-resistant surfacing welding material

A technology of surface surfacing and welding materials, which is applied in the direction of welding/cutting media/materials, welding media, welding equipment, etc., and can solve the problems of development and application of surface surfacing materials that are not resistant to cavitation corrosion

Active Publication Date: 2010-05-12
镇江艾康医疗器械有限公司
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there is no development and application of anti-cavitation corrosion surface surfacing materials

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
  • Cavitation-corrosion-resistant surfacing welding material
  • Cavitation-corrosion-resistant surfacing welding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 of the present invention: a cavitation-resistant surfacing material, its specific chemical composition is: C0.05%; Cr13%; Co1.0%; Mo1.5%; Ni6.0%; Mn0.5% ; Si0.3%; P≤0.03%; S≤0.03%; the balance is Fe. Surfacing welding is carried out for 1Cr18Ni9Ti, a commonly used material for turbine blades. Before welding, the surfacing surface is polished with metallographic sandpaper, cleaned with acetone, and then the surface is welded with MIG. The welding parameters are: welding voltage U=25.4V, welding current I=200A, shielding gas flow rate of 18L / min, welding The speed is 5mm / s. After surfacing welding, the cavitation corrosion test is carried out with JY98-IIIDN ultrasonic cell pulverizer, the vibration frequency is 20kHz, the medium is distilled water, and the cooling water temperature is controlled at 21°C. The microscopic observation of the cavitation corrosion site shows that: using the surfacing material with this composition for MIG surface welding, the n...

Embodiment 2

[0024] Embodiment 2 of the present invention: a cavitation-resistant surfacing material, its specific chemical composition is: C0.05%; Cr15%; Co1.2%; Mo1.5%; Ni6.5%; Mn0.5% ; Si0.5%; P≤0.03%; S≤0.04%; the balance is Fe. Surfacing welding for 1Cr18Ni9Ti material. Before welding, the surfacing welding surface was ground and cleaned with acetone, and then MIG was used for surface welding. The welding parameters and cavitation corrosion test parameters were the same as those in Implementation 1. The microscopic observation of the cavitation corrosion site shows that: using the surfacing material of this composition for MIG surface welding, the number of cavities in the surfacing layer is small, and the size of the cavities is smaller than that of Example 1.

Embodiment 3

[0025] Embodiment 3 of the present invention: a cavitation-resistant surfacing welding material, its specific chemical composition is: C0.07%; Cr17%; Co1.5%; Mo1.8%; Ni7.0%; Mn0.8% ; Si0.5%; P≤0.03%; S≤0.03%; the balance is Fe. Surfacing for 1Cr18Ni9Ti. Before welding, the surfacing welding surface was ground and cleaned with acetone, and then MIG was used for surface welding. The welding parameters and cavitation corrosion test parameters were the same as those in Implementation 1. The microscopic observation of the cavitation corrosion site shows that: using this composition of surfacing material for MIG surface welding, the number of cavitation in the surfacing layer is small, and the size is also small, such as figure 2 shown.

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 cavitation-corrosion-resistant surfacing welding material, which belongs to the field of novel welding materials. The surfacing material specifically comprises the following chemical components in percentage by mass: less than or equal to 0.10 percent of C, 12 to 25 percent of Cr, 1.0 to 2.0 percent of Co, 1.5 to 2.5 percent of Mo, 6.0 to 8.0 percent of Ni, 0.5 to 1.0 percent of Mn, 0.3 to 0.8 percent of Si, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, and the balance of Fe. The invention has cavitation-corrosion-resistant stainless steel, cobalt-based alloy or nickel-based alloy prepared into cavitation-corrosion-resistant surfacing welding wires and then performs surfacing on conventional materials, and the cavitation-corrosion resistance and lifespan of workpieces subjected to surfacing are greatly improved, while maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the field of new welding materials, and is mainly used for preparing surface overlay welding materials resistant to cavitation corrosion. The use of the overlay welding materials can effectively improve the service life of alloy workpieces resistant to cavitation corrosion and reduce maintenance costs. Background technique [0002] Cavitation corrosion is a corrosion behavior that occurs on fluid equipment such as turbines, propellers, and pumps. It directly leads to the generation of cracks on the material surface and shortens the service life of fluid equipment. Therefore, it is necessary to find a practical way to solve the cavitation corrosion in fluid equipment such as water turbines and propellers in our country. Correspondingly, cavitation-resistant materials have been developed at home and abroad. At present, the main anti-cavitation corrosion materials used in the world are new stainless steel, cobalt-based or nickel...

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): B23K35/30
Inventor 雷玉成朱强陈希章
Owner 镇江艾康医疗器械有限公司
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