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Welding stick

A technology of welding wire and surfacing layer, which is applied in the field of welding wire and its manufacturing, can solve the problems of weak impact resistance and poor wear resistance, and achieve fine grain, superior impact wear performance, good impact resistance and wear resistance Effect

Active Publication Date: 2015-07-15
北京奥邦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to reduce the Cr content on the basis of high-chromium cast iron surfacing materials and add a certain amount of TiC to solve the problems of weak impact resistance and poor wear resistance of general surfacing materials under abrasive conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Select a low-carbon steel skin with a width of 16 mm and a thickness of 0.5 mm, first roll the low-carbon steel skin into a U shape, and then add a drug core to the U-shaped groove, and the drug core is composed of the following alloy powder: Calculated by weight percentage, high-carbon ferrochrome 26%, TiC8%, ferromanganese 15%, ferromolybdenum 1.8%, nickel powder 0.5%, atomized ferrosilicon powder 26%, graphite 8%, iron powder 14.7%, the obtained alloy The powder is fully mixed evenly, and then the alloy powder is added into the U-shaped groove through a powder feeder, and the filling rate is 38%. The U-shaped groove is closed to include the alloy powder, and then drawn by a wire drawing machine to a diameter of 2.4mm.

[0035] The welding wire forms a surfacing layer after welding, and the surfacing layer includes the following alloy elements: calculated by weight percentage, C is 3.6%, Cr is 6.4%, Si is 1.4%, Mn is 0.9%, Mo is 1.5%, Ti was 5.2%.

Embodiment 2

[0037] Select a low-carbon steel skin with a width of 16 mm and a thickness of 0.5 mm, first roll the low-carbon steel skin into a U shape, and then add a drug core to the U-shaped groove, and the drug core is composed of the following alloy powder: Calculated by weight percentage, low-carbon ferrochromium 22%, TiC8%, silicon-manganese alloy 19%, ferromolybdenum 1.8%, nickel powder 0.5%, atomized ferrosilicon powder 26%, graphite 8%, iron powder 14.7%, the obtained The alloy powder is fully mixed evenly, and then the alloy powder is added into the U-shaped groove through a powder feeder, and the filling rate is 38%. The U-shaped groove is closed to include the alloy powder, and then drawn by a wire drawing machine to a diameter of 2.4mm.

[0038] The welding wire forms a surfacing layer after welding, and the surfacing layer includes the following alloy elements: calculated by weight percentage, C is 3.1%, Cr is 4.8%, Si is 2.2%, Mn is 0.7%, Mo is 1.5%, Ti was 5.2%.

Embodiment 3

[0040]A low-carbon steel skin with a width of 12 mm and a thickness of 0.3 mm is selected, and the low-carbon steel skin is first rolled into a U shape, and then a drug core is added to the U-shaped groove, and the drug core is composed of the following alloy powder: Calculated by weight percentage, high carbon ferrochrome 20%, TiC10%, ferromanganese 15%, ferromolybdenum 1.5%, nickel powder 0.5%, atomized ferrosilicon powder 26%, graphite 10%, chromium powder 5%, iron powder 12% , fully mix the obtained alloy powder evenly, then add the alloy powder into the U-shaped groove through the powder feeder, the filling rate is 35%, close the U-shaped groove to include the alloy powder, and then draw it to a diameter of is 2.8mm.

[0041] The welding wire forms a surfacing layer after welding, and the surfacing layer includes the following alloy elements: calculated by weight percentage, C is 3.8%, Cr is 8.1%, Si is 1.4%, Mn is 0.9%, Mo is 1.5%, Ti was 6.3%.

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Abstract

The invention provides a welding stick and a manufacturing method thereof. The welding stick comprises low-carbon steel sheath and a flux core. A surfacing layer is formed after the welding stick is welded. The surfacing layer comprises the following alloying elements in weight percentage: 1.5-5.2 percent of carbon (C), 4-10 percent of chromium (Cr), 0.5-2.5 percent of silicon (Si), 0.5-2.5 percent of manganese (Mn), 0.5-3.5 percent of molybdenum (Mo) and 5-10 percent of titanium (Ti). The welding stick provided by the invention has the characteristics that the surfacing layer formed after the welding stick is welded is high in hardness; carbide particles are fine; and the impact wear resistance is excellent, and the like.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a welding wire and a manufacturing method thereof. Background technique [0002] At present, the welding materials used for surfacing repairs on mechanical wear-resistant parts in industries such as electric power, cement, steel, and mining generally belong to the series of high manganese steel and high chromium cast iron. , its impact phase transformation hardening cannot be fully exerted, resulting in low wear resistance and short life; while high-chromium cast iron series generally only contain alloy elements such as carbon, chromium, silicon, manganese, etc., and its wear resistance mainly depends on the composite carbonization of carbon and chromium. Substances (Fe, Cr) 7 C 3 , (Fe, Cr) 23 C 6 It is achieved by combining with the matrix, but the carbide (Fe, Cr) 7 C 3 The hardness is HV1000~1520, (Fe, Cr) 23 C 6 The hardness is HV1200~1800, although it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40
Inventor 王存
Owner 北京奥邦新材料有限公司
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