Metal powder flux-cored wire suitable for medium and thick plate beveling-free high-speed welding

A flux-cored welding wire and beveling technology, which is applied to welding medium, welding equipment, metal processing equipment, etc., can solve the problems of high cost and time, increased welding workload, and consumption, so as to ensure the quality of weld seams and improve Melting pool temperature, effect of ensuring penetration

Active Publication Date: 2020-05-29
武汉铁锚焊接材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the existing butt welding of medium and thick plates adopts the multi-layer and multi-pass welding process of bevelling, which consumes more cost and time, and increases the welding workload.

Method used

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  • Metal powder flux-cored wire suitable for medium and thick plate beveling-free high-speed welding
  • Metal powder flux-cored wire suitable for medium and thick plate beveling-free high-speed welding

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Embodiment Construction

[0020] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] EXAMPLES The metal powder flux-cored wire suitable for high-speed welding of medium and thick plates without groove is produced by conventional flux-cored wire manufacturing process, the steel strip sheath is made of ordinary SPCC steel strip, and the formula of the flux core is shown in Table 1.

[0022] Table 1: Metal powder flux cored wire formula (mass percentage%)

[0023] Example Silicon manganese alloy manganese oxide Ferrosilicon Aluminum powder graphite iron powder Fill rate% -- 5-8 2-4 ...

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Abstract

The invention provides a metal powder flux-cored wire suitable for medium and thick plate beveling-free high-speed welding. The metal powder flux-cored wire comprises sheet steel and a flux core wrapped by the sheet steel. The flux core is prepared from components in percent by mass including 5%-8% of silicon-manganese alloy, 2%-4% of manganite, 3%-5% of silicon iron, 1%-2% of powdered aluminium,1%-2% of graphite and the balance iron powder. According to the metal powder flux-cored wire, as the formula of the flux core is designed, a welding joint of the wire has good depth of fusion, the wire is suitable for medium and thick plate beveling-free high-speed welding, the welding speed can reach 450 mm / min-600 mm / min, and the welding working efficiency is effectively improved. The metal powder flux-cored wire has excellent welding process performance, and according to the overall performance of fused metal and a welded joint, the yield strength is larger than or equal to 390 MPa, the tensile strength is larger than or equal to 490 MPa, the elongation is larger than or equal to 22%, and the Akv under the -30 DEG C condition is larger than or equal to 47 J.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a metal powder flux-cored welding wire suitable for high-speed welding of medium and thick plates without groove opening. Background technique [0002] Metal powder flux cored wire has the characteristics of small spatter and fast melting of flux cored wire, and also has the characteristics of high deposition efficiency of solid wire and high current welding. Metal powder flux-cored welding wire is composed of powder and steel skin, the steel skin is inside the powder powder, and the powder is mainly composed of a variety of alloy powders, etc. These alloy powders are the main factors that determine the mechanical properties of the flux-cored wire and are also the welding wire. The core technology of manufacturing. In the butt welding of medium and thick plates, in order to ensure penetration, the beveling multi-layer and multi-pass welding process is usual...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/368
CPCB23K35/3053B23K35/368B23K35/0266
Inventor 吴光辉刘飞周海龙汪涛
Owner 武汉铁锚焊接材料股份有限公司
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