Unlock instant, AI-driven research and patent intelligence for your innovation.

High-hardness and low-cracking surfacing electrode

A surfacing electrode and cracking technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of reducing the service life of the surfacing layer, the gap between the alloy systems, and easily causing industrial accidents. The effect of low welding hot crack susceptibility, low impurity content, and excellent surface crack resistance

Inactive Publication Date: 2022-01-28
TIANJIN BRIDGE WELDING MATERIALS GROUP +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large gap between the alloy system and the deposited workpiece and the high hardness and poor toughness of the surfacing layer with high hardness, a large number of cracks often appear on the surface of the surfacing layer.
These cracks reduce the service life of the surfacing layer, and the peeled surfacing metal is also likely to cause industrial accidents during work.

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-hardness and low-cracking surfacing electrode
  • High-hardness and low-cracking surfacing electrode
  • High-hardness and low-cracking surfacing electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-hardness and low-cracking surfacing welding electrode, which is uniformly mixed according to the components and proportions described in Table 1, and the weight tolerance is required to be less than 0.02%. Mix the 14% water glass evenly, send the wet mixed powder into the hydraulic press and wrap it on the welding core. The components of the welding core are shown in Table 2. After baking at low temperature, medium temperature and high temperature; Baumé degree, potassium-sodium mixed water glass with a potassium-sodium ratio of 2.5:1, the low-temperature baking temperature is 60°C, the medium-temperature baking temperature is 130°C, and the high-temperature baking temperature is 250°C to obtain the high hardness and low cracking Sexual surfacing electrodes.

Embodiment 2

[0027] The difference from Example 1 is only that: the composition of the welding core is shown in Table 2, and the composition of the coating is shown in Table 1.

Embodiment 3

[0029] The difference from Example 1 is only that: the composition of the welding core is shown in Table 2, and the composition of the coating is shown in Table 1.

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 high-hardness and low-cracking surfacing electrode. The surfacing electrode is composed of a core and a coating wrapping the surface of the core, and the core is a carbon steel core. The high-hardness and low-cracking surfacing electrode has excellent welding manufacturability, such as good slag flowability, stable electric arc, small splashing, small slag amount, easy slag removal, smooth welding seam and the like, and also has relatively high hardness and toughness; and by optimizing and combining materials used in a product formula and strictly controlling the content of elements which easily cause crater cracks in weld metal, the electrode has excellent surface crack resistance on the premise of keeping other excellent properties.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a surfacing electrode with high hardness and low cracking property. Background technique [0002] The main function of the surfacing electrode is to weld a special alloy surface on the surface of the workpiece. Its purpose is to improve the wear resistance, corrosion resistance and heat resistance of the working surface, so as to reduce the cost and improve the overall performance and service life. However, due to the large gap between the alloy system and the deposited workpiece and the high hardness and poor toughness of the surfacing layer with higher hardness, a large number of cracks often appear on the surface of the surfacing layer. These cracks reduce the service life of the surfacing layer, and the peeled surfacing metal is also likely to cause work-related accidents during work. Contents of the invention [0003] In view of this, the present invention aims to overcom...

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): B23K35/365B23K35/30B23K35/40
CPCB23K35/365B23K35/3086B23K35/404
Inventor 郑子行张志涛韩海舰姚旭
Owner TIANJIN BRIDGE WELDING MATERIALS GROUP