Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Hardfacing electrode covering and electrode containing same

A technology for surfacing electrodes and coatings, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of decreased concentration, decreased hardness and wear resistance, etc., to reduce pores, strong brittleness, Beautifully shaped effect

Active Publication Date: 2016-06-22
广州鑫钻新材料科技开发有限公司
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In terms of improving the deposition rate of surfacing electrodes, such as patent CN101073861A, it is realized by adding a large amount of iron powder (up to 72%) in the coating. Unfortunately, only 2-6% of boron carbide is contained in the coating, and the deposition efficiency is very high. The weld hardness and wear resistance can only have a higher value when the outer diameter of the coating increases. For example, taking the Φ4.0mm welding core as an example, the outer diameter of the coating should reach Φ9.0mm; if it is reduced, the hardness may be affected And wear-resistant effect, because boron carbide will be diluted when a large amount of iron powder in the molten droplet and molten pool is molten, causing its concentration to drop greatly, resulting in a decrease in hardness and wear resistance

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
  • Hardfacing electrode covering and electrode containing same
  • Hardfacing electrode covering and electrode containing same
  • Hardfacing electrode covering and electrode containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An embodiment of the electrode of the present invention, the electrode described in this embodiment includes a welding core and a coating, the material of the welding core is carbon steel H08A, and the coating contains the following components in mass percentage: boron carbide 18% , atomized iron powder 28%, atomized ferrosilicon 6%, high carbon ferrochrome 41%, mica 4%, graphite powder 3%. The welding core described in this embodiment has a diameter of Φ4.0 mm and a length of 400 mm, and the outer diameter of the welding rod is Φ7.0 mm.

[0036] The electrode described in this embodiment can be prepared by the general electrode production process in the prior art. The difference is that the adhesive used in the electrode preparation process described in this embodiment is to add 0.5% of the weight of the adhesive used. Potassium permanganate, the modulus is M2.2-2.4, the concentration is Baume degree 48-50 degrees, potassium water glass: sodium water glass is 3:1 mixed...

Embodiment 2

[0039] An embodiment of the electrode of the present invention, the electrode described in this embodiment includes a welding core and a coating, the material of the welding core is carbon steel H08A, and the coating contains the following components in mass percentage: boron carbide 16% , Atomized iron powder 28%, mica 2%, graphite powder 7%, ferro-niobium 20%, metal chromium 20%, micro-carbon ferro-chromium 3%, medium-carbon ferromanganese 4%. The welding core in this embodiment has a diameter of Φ3.2mm and a length of 350mm, and the outer diameter of the welding rod is Φ6.0mm. The preparation method of the welding rod described in this embodiment is the same as that in Embodiment 1.

[0040] Also measure the hardness of the surfacing layer according to the standard: one to three layers of HRC67-69. Use the welding rod of this embodiment to build up two layers on the conical screw propeller of the charcoal machine (small screw, 520mm long, the outer diameter of the big end ...

Embodiment 3

[0042] An embodiment of the electrode of the present invention, the electrode described in this embodiment includes a welding core and a coating, the material of the welding core is carbon steel H08A, and the coating contains the following components in weight percentage: boron carbide 14% , 28% atomized iron powder, 33% micro-carbon ferrochrome, 8% cobalt powder, 4% mica, 9% graphite powder, 4% ferrovanadium. The welding core described in this embodiment has a diameter of Φ5.0 mm and a length of 500 mm, and the outer diameter of the welding rod is Φ8.8 mm. The preparation method of the welding rod described in this embodiment is the same as that in Embodiment 1.

[0043] Also measure the hardness of the surfacing layer according to the standard: one to three layers of HRC65-67. Use this welding rod to surfacing on the large screw of the rubber-plastic double-cone extruder (length 1800mm, the outer diameter of the large end is Φ300mm, and the material is 38CrMoAl nitrided ste...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hardfacing electrode covering and an electrode containing the same. The covering is prepared from the following components in percentage by mass: 14 to 18 percent of boron carbide, 28 percent of atomized iron powder, 0 to 6 percent of atomized ferrosilicon, 0 to 41 percent of high-carbon ferro-chrome, 0 to 33 percent of micro-carbon ferro-chrome, 0 to 20 percent of ferroniobium, 0 to 8 percent of cobalt powder, 3 to 9 percent of graphite powder, 0 to 4 percent of medium-carbon ferromanganese, 0 to 4 percent of ferrovanadium, and 0 to 20 percent of chromium metal. The hardfacing electrode covering disclosed by the invention is low in melting point, high in melting speed, convenient to perform welding and attractive in molding; metal on a surfacing layer of the hardfacing electrode covering has high hardness, high wear resistance and a certain brittleness resistance; moreover, in the using process, the hardfacing electrode covering is relatively high in cost performance. Meanwhile, the invention further discloses the electrode containing the hardfacing electrode covering and a preparation method of the electrode.

Description

technical field [0001] The invention relates to a wear-resistant surfacing welding material, in particular to a coating for a wear-resistant surfacing electrode, an electrode containing the coating, and a preparation method for the electrode. Background technique [0002] Screw propellers for extrusion in bamboo charcoal and rubber and plastic industries, concrete mixing blades, liners, concrete pump delivery S pipes, cutting rings, grinding discs in the production of quartz powder and silicon micropowder, hook bucket teeth, etc. The ferrous metal surface of the parts, due to the long-lasting and intense mutual extrusion and grinding of hard substances such as bamboo wood chips, lime, sand, iron filings, slag, rubber and plastic particles, quartz stone particles, etc., resulting in serious wear and tear. Particle wear and scratches, resulting in greatly shortened service life of these parts, resulting in huge economic losses. People use various methods to prevent this from ...

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): B23K35/365B23K35/40
CPCB23K35/365B23K35/40
Inventor 廖禄泰
Owner 广州鑫钻新材料科技开发有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products