Chromium-titanium-strengthened high-carbon high-alloy-steel wear-resistant surfacing flux-cored wire and preparing method thereof

A technology of high-alloy steel and flux-cored welding wire, applied in welding equipment, metal processing equipment, welding medium, etc., can solve the problems of mill shutdown and maintenance, affecting production efficiency and product quality, etc., to reduce the hardening tendency and improve welding. The effect of reducing seam forming quality and oxidative burning loss

Active Publication Date: 2017-01-04
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main failure mode of this type of grinding roller is falling off and peeling off, which will lead to the shutdown of the mill for maintenance, seriously affecting its production efficiency and product quality

Method used

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  • Chromium-titanium-strengthened high-carbon high-alloy-steel wear-resistant surfacing flux-cored wire and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 220g high-carbon ferrochromium, 410g ferro-titanium, 15g metal manganese powder, 21g metal molybdenum powder, 37g graphite, 38g silicon-calcium alloy, 25g zircon sand, 90g fluorite, 1g boron carbide, 143g iron powder, 1000g powder in total, Choose a carbon steel strip with a thickness of 0.3mm and a width of 16mm, with a tensile strength of 315MPa and an elongation of 41%, and roll it into a U shape. After the powder is mixed evenly, add it to the U-shaped groove, and the filling factor of the powder is 40%. , After the steel strip is closed, it is drawn and reduced in five passes of φ4.32mm, φ3.51mm, φ2.87mm, φ2.34mm, and φ1.97mm, and finally a finished welding wire with a diameter of 2.0mm is obtained.

Embodiment 2

[0035] 230g high-carbon ferrochromium, 400g ferro-titanium, 15g metal manganese powder, 20g metal molybdenum powder, 38g graphite, 40g silicon-calcium alloy, 27g zircon sand, 95g fluorite, 2g boron carbide, 133g iron powder, a total of 1000g powder, Select a carbon steel strip with a thickness of 0.3mm and a width of 16mm, with a tensile strength of 320MPa and an elongation of 42%, and roll it into a U shape. After the powder is mixed evenly, add it to the U-shaped groove, and the filling factor of the powder is 41%. , The steel strip joint is drawn and reduced in five passes of φ4.32mm, φ3.51mm, φ2.87mm, φ2.34mm, φ1.97mm, and finally a finished welding wire with a diameter of 2.0mm is obtained.

Embodiment 3

[0037]200g high-carbon ferrochromium, 380g ferro-titanium, 12g metal manganese powder, 20g metal molybdenum powder, 35g graphite, 25g silicon-calcium alloy, 20g zircon sand, 80g fluorite, 1g boron carbide, 227g iron powder, a total of 1000g powder, Choose a carbon steel strip with a thickness of 0.3mm and a width of 16mm, with a tensile strength of 330MPa and an elongation of 45%, and roll it into a U shape. After the powder is mixed evenly, add it to the U-shaped groove, and the filling factor of the powder is 38%. , After the steel strip is closed, it is drawn and reduced in five passes of φ4.32mm, φ3.51mm, φ2.87mm, φ2.34mm, and φ1.97mm, and finally a finished welding wire with a diameter of 2.0mm is obtained.

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Abstract

The invention discloses a chromium-titanium-strengthened high-carbon high-alloy-steel wear-resistant surfacing flux-cored wire. The chromium-titanium-strengthened high-carbon high-alloy-steel wear-resistant surfacing flux-cored wire is prepared from an external carbon steel belt and chemical powder wrapped by the external carbon steel belt; the weight of the chemical powder accounts for 38.0% to 42.0% of the total weight of the welding wire, and the chemical powder is prepared from 20.0%-25.0% of high carbon chromium iron, 38.0%-45.0% of ferrotitanium, 1.2%-1.6% of metal manganese powder, 2.0%-2.2% of metal molybdenum powder, 3.5%-4.0% of graphite, 2.5%-5.0% of silicon calcium alloy, 2.0%-3.0% of zirconium quartz sand, 8.0%-10.0% of fluorite, 0.1%-0.2 % of boron carbide and the balance iron powder. A preparing method includes the steps that the U-shaped external carbon steel belt is made, the chemical powder is added into the U-shaped groove, five-pass continuous drawing reducing is carried out after an opening is sealed, and the flux-cored wire is obtained. The chromium-titanium-strengthened high-carbon high-alloy-steel wear-resistant surfacing flux-cored wire is suitable for surfacing composite manufacturing and on-line repairing of a grinding roller and a grinding disc, and the service life of the grinding roller and the service life of the grinding disc can be remarkably prolonged.

Description

technical field [0001] The invention relates to a chromium-titanium reinforced high-carbon and high-alloy steel wear-resistant surfacing flux-cored wire and a preparation method thereof, belonging to the technical field of welding materials and processing. Background technique [0002] Grinding roller is an important spare part in the electric power industry and cement industry, and its use effect directly affects the production efficiency and product quality of the mill. Grinding rollers are repeatedly cut by materials during service, requiring them to have good abrasive wear resistance. At present, the surfacing method is mostly used to manufacture grinding rollers, that is, open-arc surfacing welding of high-chromium and high-alloy cast iron flux-cored wire on the surface of the roller body to obtain a surfacing layer with high hardness and high wear resistance, and to improve the service life of the grinding roller. High-chromium and high-alloy cast iron flux-cored wire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3086B23K35/406
Inventor 张迪王英杰王立志王清宝聂祯华白波马德志段斌李侠
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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