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Gas shielded flux-cored welding wire for vertical mill grinding roller bead welding composite manufacture and preparation method thereof

A technology of flux-cored welding wire and gas shielding, which is applied in the direction of manufacturing tools, welding equipment, welding equipment, etc., can solve the problems of large powder filling coefficient and difficulty in welding wire production and manufacturing, achieve less smoke and dust, reduce cleaning and grinding after welding, and weld The effect of excellent process performance

Active Publication Date: 2016-11-23
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

This will inevitably cause the powder filling factor of the welding wire to be too large, resulting in difficulties in the production of welding wire

Method used

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  • Gas shielded flux-cored welding wire for vertical mill grinding roller bead welding composite manufacture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Select a ferritic stainless steel strip with a thickness of 0.4mm and a width of 10mm, and roll it into a U shape; 610g of high-carbon ferrochromium powder, 130g of chromium carbide powder, 58g of graphite, 12g of electrolytic manganese metal, 40g of silicon carbide powder, and 12g of aluminum-magnesium Alloy, 3g zircon sand, 5g cryolite, 5g sodium fluoride, 5g lithium carbonate, 120g iron powder, a total of 1000g powder, mix evenly and add to the U-shaped tank, the filling rate is 25%; , φ1.90mm, φ1.67mm, φ1.45mm, φ1.23mm, φ1.15mm six-pass cassette die combination eye mold drawing and reducing diameter, the final finished wire diameter is 1.2mm.

Embodiment 2

[0039] Select a ferritic stainless steel strip with a thickness of 0.4mm and a width of 10mm, and roll it into a U shape; 640g of high-carbon ferrochromium powder, 150g of chromium carbide powder, 60g of graphite, 18g of electrolytic manganese metal, 45g of silicon carbide powder, and 18g of aluminum-magnesium Alloy, 5g zircon sand, 8g cryolite, 9g sodium fluoride, 12g lithium carbonate, 35g iron powder, a total of 1000g powder, mixed evenly and added to the U-shaped tank, the filling rate is 28%; after closing, pass through φ2.50mm , φ1.90mm, φ1.67mm, φ1.45mm, φ1.23mm, φ1.15mm six-pass cassette die combination eye mold drawing and reducing diameter, the final finished wire diameter is 1.2mm.

Embodiment 3

[0041] Select a ferritic stainless steel strip with a thickness of 0.4mm and a width of 10mm, and roll it into a U shape; 620g of high-carbon ferrochrome powder, 135g of chromium carbide powder, 59g of graphite, 15g of electrolytic manganese metal, 43g of silicon carbide powder, and 15g of aluminum-magnesium Alloy, 4g zircon sand, 7g cryolite, 8g sodium fluoride, 8g lithium carbonate, 86g iron powder, a total of 1000g powder, mixed evenly and added to the U-shaped groove, the filling rate is 27%; , φ1.90mm, φ1.67mm, φ1.45mm, φ1.23mm, φ1.15mm six-pass cassette die combination eye mold drawing and reducing diameter, the final finished wire diameter is 1.2mm.

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Abstract

The invention discloses a gas shielded flux-cored welding wire for vertical mill grinding roller bead welding composite manufacture and a preparation method thereof. The welding wire is composed of aferrite stainless steel band and powder wrapped in the ferrite stainless steel band, wherein the powder accounts for 25-28% of the total weight of the welding wire. The powder comprises, by weight, 60.0-65.0% of high carbon ferro-chrome, 12.0-15.0% of chromium carbide, 5.8-6.0% of graphite, 1.0-2.0% of metal manganese powder, 4.0-4.5% of carbonizing silica powder, 1.0-2.0% of aluminum magnesium alloy, 0.2-0.5% of zircon sand, 0.5-1.5 of cryolite, 0.5-1.5% of sodium fluoride, 0.5-1.5% of lithium carbonate, and the balance iron powder. The preparation method comprises the following steps of manufacturing the ferrite stainless steel band with the thickness of 0.4 mm and the width of 10 mm into a U shape; adding the powder into the U-shaped groove; after the U-shaped groove heals up, conducting six times of continuous drawing reducing in sequence; finally conducting mechanical cleaning on the surface of the welding wire; and obtaining the phi 1.2mm gas shielded flux-cored welding wire forgrinding roller bead welding composite manufacture. The vertical mill grinding roller bead welding composite manufacture can be achieved by adopting the welding wire, the welding processing performance of the welding wire is excellent, little welding smoke is produced, the operation is flexible, and a bead welding layer is high in abrasive resistance.

Description

technical field [0001] The invention relates to a gas-shielded flux-cored welding wire for vertical mill roll surfacing composite manufacturing and a preparation method thereof, belonging to the technical field of welding materials and processing. Background technique [0002] Vertical mills are widely used in national key industries such as cement and electric power. The grinding roller is the core wear part of the vertical mill, and its usage directly determines the production efficiency and product quality of the vertical mill. The grinding roller is repeatedly cut by the material during the working process, and the wear form is abrasive wear. In order to improve the service life of the grinding roller, the overall wear-resistant alloy casting (such as high chromium cast iron) or surfacing welding method is often used to manufacture the grinding roller. [0003] The integrally cast grinding roller has high cost, and the roll body is brittle, prone to breakage or cracking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/30B23K35/40B23K9/04B23K9/16
Inventor 张迪王立志王英杰聂祯华王清宝李侠白波马德志段斌
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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