Tube wire for overlaying welding and preparation thereof

A tubular welding rod and tube technology, applied in the field of surfacing tubular welding rod and its preparation, can solve the problems of limited application scope, narrow surfacing welding bead, less variety, etc. low cost effect

Inactive Publication Date: 2010-11-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the problems that the existing wear-resistant tubular electrodes only have tungsten carbide tubular electrodes, few varieties, and can only be surfacing with oxy-acetylene surfacing welding, the application range is limited, the cross section is circular, and the surfacing welding bead is narrow. The invention provides a new type of tubular welding rod and its preparation method

Method used

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  • Tube wire for overlaying welding and preparation thereof
  • Tube wire for overlaying welding and preparation thereof
  • Tube wire for overlaying welding and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Select the H08A cold-rolled steel strip with a width of 39mm and a thickness of 0.3mm, and use the existing cored wire production equipment for steelmaking to roll it into a U-shaped cross-section along the length direction (longitudinal direction) of the steel strip ;

[0050] (2) Add medicated powder grains in above-mentioned U-shaped pit, filling rate is 48%, wherein: described medicated powder grain size is-50 order, and medicated powder grain composition is high-carbon ferrochrome in parts by weight (kg). 60. Ferrovanadium 8, 75# ferrosilicon 5, high carbon ferromanganese 1, aluminum magnesium alloy 5, ferroboron 4, ferrotitanium 5, ferromolybdenum 6, fluorite 2 and potassium titanate 3;

[0051] The powder is applied after 15 minutes of powder mixing with a conventional powder mixer;

[0052] (3) The cross-section of the U-shaped steel strip after adding the medicine powder is connected in the form of a bite, so that the medicine powder is wrapped in the stee...

Embodiment 2

[0057] (1) Select the H08A cold-rolled steel strip with a width of 130mm and a thickness of 0.4mm, and use the existing cored wire production equipment for steelmaking to roll it into a U-shaped cross-section along the length direction (longitudinal direction) of the steel strip ;

[0058] (2) Add medicated powder grains in above-mentioned U-shaped pit, filling rate is 55%, wherein: described medicated powder grain size is-50 order, and grain composition is high carbon ferrochrome 70 in parts by weight (kg). , ferro-vanadium 10, high-carbon ferromanganese 1, ferro-boron 12, ferro-titanium 3, ferro-molybdenum 3 and graphite 4;

[0059] The powder is applied after 20 minutes of powder mixing with a conventional powder mixer;

[0060] (3) The cross-section of the U-shaped steel strip after adding the medicine powder is connected in the form of a bite, so that the medicine powder is wrapped in the steel belt to form a steel pipe wrapped with the medicine powder; the diameter of t...

Embodiment 3

[0065] (1) Select the Q195 cold-rolled steel strip with a width of 45mm and a thickness of 0.3mm, and use the existing steelmaking cored wire production equipment to roll it into a U-shaped cross-section along the length direction (longitudinal direction) of the steel strip ;

[0066] (2) Add medicated powder grains in the above-mentioned U-shaped pit, and the filling rate is 50%, wherein: the grain size of the described medicinal powder grains is-50 mesh, and the medicinal powder grain composition is high-carbon ferrochromium in parts by weight (kg). 66. Ferrovanadium 6, 75# ferrosilicon 3, high carbon ferromanganese 2, aluminum magnesium alloy 5, ferroboron 7, ferrotitanium 4, ferromolybdenum 4, fluorite 2 and potassium titanate 2;

[0067] The medicated powder is applied after 20 minutes of powder mixing with a conventional powder mixer;

[0068] (3) Connect the U-shaped cross-section of the steel strip with a U-shaped cross-section after adding the powder particles, so th...

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Abstract

The invention provides a tubular electrode used for surfacing welding, which is prepared by low-carbon steel band and powder grains wrapped in the low-carbon steel band, wherein, the longitudinal cross-section of the tubular electrode is a long flat shape or rectangle-similar; the powder grains in the pipe have the granularity of 50 meshes; according to the portions by weight, the powder comprises the components as follows: 40-70 portions of high-carbon ferrochrome, 5-30 portions of ferrovanadium, 0-6 portions of 75# ferrosilicon, 1-9 portions of high-carbon ferromanganese, 0-8 portions of aluminium-magnesium alloy, 2-15 portions of ferroboron, 1-6 portions of ferrotitanium, 2-8 portions of ferromolybdenum, 0-8 portions of graphite, 0-5 portions of fluorite and 0-6 portions of potassium titanate; the longitudinal length of the tubular electrode is 300-500mm; one end of the tubular electrode is provided with a flat area with the width of 8-68mm, thickness of 0.5-1.5mm and length of 8-20mm. The tubular electrode of the invention has large surfacing welding seam, beautiful forming and high surfacing welding efficiency, is easier to realize the automatic surfacing welding compared with the conventional electrodes, and can carry out the production of large batches.

Description

technical field [0001] The invention relates to a welding material, in particular to a novel tubular electrode for surfacing welding and a preparation method thereof. Background technique [0002] Most of the mechanical parts are made of metal materials. Due to the relative movement between parts or between parts and materials, wear will occur. Further, because mechanical parts are often working under extremely complex and harsh conditions, a large number of mechanical equipment It is often scrapped due to wear and tear, which requires that the surface of mechanical equipment under heavy loads and other working conditions have good wear resistance. [0003] Surfacing welding is widely used because of its simple process, low investment in equipment, flexible operation and wide adaptability. It is a common method for manufacturing or repairing wear-resistant parts at present. Welding rods, tubular electrodes, and flux-cored wires are commonly used surfacing materials. The we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/22B23K35/40
Inventor 孙俊生王冶朱强
Owner SHANDONG UNIV
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