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Abrasive surface electrode of efficient high-hardness

A high-hardness, electrode technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problem of surfacing welding electrodes with no iron powder electrodes, and reduce the number of surfacing layers, The effect of high melting efficiency, improved melting efficiency and deposition efficiency

Inactive Publication Date: 2007-11-21
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, no special iron powder electrode and high-performance surfacing electrode have been seen in the wear-resistant surfacing electrode.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-efficiency, high-hardness, wear-resistant surfacing welding electrode, which mainly includes a welding core and a coating, and the coating of the welding rod is prepared by using the following weight ratio: silver flake graphite 3, boron carbide 2, silicon carbide 2, molybdenum iron 3, vanadium iron 3. Tungsten carbide 5, high carbon ferrochrome 16, metal manganese 2, iron powder 72; welding core is Φ4H08A, electrode coating outer diameter is Φ9, high modulus and high concentration sodium water glass is used as electrode binder, and ordinary hydraulic press is pressed Welding rods; welding rods are welded after drying at low temperature and high temperature, using direct current welding machine for welding, and the hardness is measured after the single layer of surfacing welding is ground flat. The average hardness is HRC65, and the size of the surfacing welding test piece is 100×60×20mm Ordinary low carbon steel plate.

Embodiment 2

[0024] A high-efficiency, high-hardness wear-resistant surfacing welding electrode, which mainly includes a welding core and a coating, and the coating of the welding rod is prepared by using the following weight ratio: silver flake graphite 4, boron carbide 6, silicon carbide 2, molybdenum iron 5, vanadium iron 5. Tungsten carbide 10, high-carbon ferrochrome 8, metal manganese 3, iron powder 72; the rest of the implementation steps are the same as the first embodiment. Hardness of surfacing metal is HRC66.

Embodiment 3

[0026] A high-efficiency, high-hardness, wear-resistant surfacing welding electrode, which mainly includes a welding core and a coating, and the coating of the welding rod is prepared by using the following weight ratio: silver flake graphite 5, boron carbide 4, silicon carbide 3, molybdenum iron 4, vanadium iron 4. Tungsten carbide 7, high-carbon ferrochrome 12, metal manganese 2, iron powder 72; the rest of the implementation steps are the same as the first embodiment. Surfacing metal hardness HRC68.

[0027] The present invention has prominent substantive features such as high efficiency and high hardness, and its main structure and principle will be further described in detail.

[0028] A. The surfacing electrode of the present invention has a fast melting speed, no slag knocking is required in the surfacing process, which can shorten the surfacing time and increase the surfacing speed, especially in preheating surfacing, especially in hot weather , the working conditions...

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Abstract

The invention is concerned with wear-resisting build up deposited electrode with high efficiency and high rigidity. It relates to Phi4 H08A cored wire, covering with Phi9 outer diameter. The compose of covering is 3 to 5 percent of silver-graphite, 2 to 6 percent of Boron carbide, 2 to 3 percent of carborundum, 3 to 5 percent of ferromolybdenum, 3 to 5 percent of ferrovanadium, 5 to 10 percent of tungsten carbide, 8 to 16 percent of high carbon ferrochrome, 2 to 3 percent of manganese and 72 percent of iron powder. It changes the existing covering structure by adding lots of iron powder, some kinds of alloy element without adding any ore powder. This method increases the melting efficiency and deposition efficiency with buildup deposited metal rigidity of HRC65 to 68 and certain obdurability and without knocking the sediment in the middle of the multi-pathway and multi-layer to continuous build up deposited welding. This is fit for carbon construct ional steel, the buildup deposited welding to low alloy steel and some middle, high alloy steels, and the wear-resisting situation to the abrasion of milling grain.

Description

technical field [0001] The invention relates to a metal surfacing material, in particular to a high-efficiency, high-hardness and wear-resistant surfacing welding electrode used for the manufacture and repair of equipment parts to improve the service life of the equipment. Background technique [0002] Among ordinary structural steel electrodes, there is an iron powder electrode, the purpose of which is to improve efficiency. The iron powder content in the electrode coating is generally more than 20%, up to 50%. In addition to iron powder, the electrode coating contains more ore powder . [0003] At present, no special iron powder electrode and high-performance surfacing electrode have been seen in the wear-resistant surfacing electrode. Contents of the invention [0004] In view of the above situation, the object of the present invention is to provide a high-efficiency, high-hardness and wear-resistant surfacing welding electrode. The coating of the electrode has a high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
Inventor 张清辉肖逸锋龚建勋任立臣
Owner XIANGTAN UNIV
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