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Surfacing electrode and application thereof

A technology for surfacing electrodes and welding cores, applied in welding media, welding equipment, welding equipment, etc., can solve the problems of poor hammer hardness and wear resistance, and achieve high production and use costs, small grain size, and high hardness. Effect

Inactive Publication Date: 2005-02-23
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the existing sintered single-roller crusher hammer surfacing electrode with coating and poor hardness and wear resistance of the hammer body after surfacing, the technical problem to be solved by the present invention is to provide a method that can not only improve the hammer The hardness and wear resistance of the body, thereby increasing the service life of the hammer head, and making the welding quality easy to guarantee the surfacing electrode

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Use ordinary sand to make a casting cavity with a diameter of Φ13mm×300mm, paint the cavity with ordinary paint, and dry it. Medium frequency induction furnace smelting molten iron, its composition (weight percentage) is C: 5.1%, Si: 1.2%, Mn: 1.6%, Ti: 0.03%, Cr: 23%, S≤0.05%, P≤0.05%, O≤ 0.01%, N≤0.01%, the rest is Fe. Then pouring, after the molten iron is cooled to room temperature in the cavity, it will be made into welding rods, and the sand on the surface of the welding rods will be cleaned before use. The average hardness value of the surfacing metal surface of the electrode is HRC = 57.5.

Embodiment 2

[0027] Use ordinary sand to make a casting cavity of Φ13mm×300mm, paint the cavity with ordinary paint, and dry it. Medium frequency induction furnace smelting molten iron, its composition (weight percentage) is C: 5.3%, Si: 1.2%, Mn: 1.9%, Ti: 0.07%, Cr: 22%, Cu: 0.10%, S≤0.05%, P≤ 0.05%, O≤0.01%, N≤0.01%, and the rest is Fe. Then pouring, after the molten iron is cooled to room temperature in the cavity, it will be made into welding rods, and the sand on the surface of the welding rods will be cleaned before use. The average hardness value of the surfacing metal surface of the electrode is HRC = 58.5.

Embodiment 3

[0029] Use ordinary sand to make a casting cavity of Φ13mm×300mm, paint the cavity with ordinary paint, and dry it. Medium frequency induction furnace smelting molten iron, its composition (weight percentage) is C: 3.2%, Si: 0.4%, Mn: 0.4%, Ti: 0.10%, Cr: 10%, S≤0.05%, P≤0.05%, O≤ 0.01%, N≤0.01%, the rest is Fe. Then pouring, after the molten iron is cooled to room temperature in the cavity, it will be made into welding rods, and the sand on the surface of the welding rods will be cleaned before use. The average hardness value of the surfacing metal surface of the electrode is HRC = 46.5.

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PUM

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Abstract

A welding electrode for the build-up welding of hammer contains C (3.2-6.5 wt.%), Si (0.4-2.5), Mn (0.4-2.0), Ti (0.01-1.0) and Cr (10-35). The welded hammer has high hardness, toughness and antiwear nature, fine crystal grains and long service life.

Description

Technical field [0001] The invention relates to an electrode and its application, in particular to a surfacing welding electrode and its application. Background technique [0002] The sintering machine is mainly used in the iron and steel metallurgical industry. Its function is to obtain sintered ore through sintering. It is the previous process of blast furnace ironmaking. After sintering, the sintered ore falling from the tail of the sintering machine must be crushed and screened to make the ore have a uniform particle size before entering the blast furnace for smelting. The sintered ore crushed in my country adopts a primary crushing process, and the equipment used is a single-roller crusher. The crushed sinter must be screened to remove the oversized or undersized sintered ore outside the required particle size range, among which the undersized ore is re-sintered, while the oversized ore is re-broken. The single-roll crusher is composed of a star wheel, a shaft roller, a...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K35/24
Inventor 林剑东何藩唐银生王新
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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