Welding wire flux core, welding wire, preparation method of welding wire and welding method

A welding wire and flux core technology, which is applied in the preparation of welding wire, welding wire flux core and welding wire, can solve the problems of short life, easy damage to the structure, and easy occurrence of small holes and cracks in the surfacing layer, so as to improve the service life and weld The effect of good process performance and low overall cost of welding wire
CN112388202AActive Publication Date: 2021-02-23ATLANTIC CHINA WELDING CONSUMABLES
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Applications(China)
Current Assignee / Owner
ATLANTIC CHINA WELDING CONSUMABLES
Publication Date
2021-02-23

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Abstract

The invention provides a welding wire flux core, a welding wire, a preparation method of the welding wire and a welding method, and relates to the technical field of welding materials. The flux core is formed by following chemical components including, by mass percent, 1-6% of Mn, 0.1-5% of Si, 0.1-2% of Mg, 35-50% of Cr, 15-25% of Ni; 1-10% of Na2O and K2O, 0.1-2% of fluoride, 15-30% of TiO2, 3-10% of SiO2 and the balance Fe and inevitable impurities. After the welding wire is adopted for surfacing, the tensile strength of a surfacing layer of the welding wire is 527-547 MPa, the elongation is 38%, the welding wire is used as a backing welding material of an alloy steel flux-cored wire for surface surfacing, it is guaranteed that no open cracks exist in side bending (d=4t, and alpha=180 degrees) after heat preservation of 690 DEG C and heat treatment of 32 hours, and surfacing layer metal has no intergranular corrosion tendency; the welding process performance is good, electric arcs are stable, splashing is small, weld joint forming is attractive, and vertical downward welding can be achieved through short-circuit transition; and the welding wire is simple in production process, reasonable in alloy system design and low in comprehensive cost.
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Description

technical field

[0001] The invention belongs to the technical field of welding materials, and in particular relates to a welding wire flux core, a welding wire, a preparation method and a welding method of the welding wire. Background technique

[0002] In recent years, with the rapid development of the economy, the stainless steel industry has also developed rapidly. The strong growth of stainless steel consumption will surely drive the rapid growth of the welding market: on the one hand, the improvement of steel quality promotes the replacement of stainless steel welding materials; The pace of structural adjustment was accelerated.

[0003] Compared with traditional manual electrodes, copper-plated solid wires, and submerged arc fluxes, welding with stainless steel flux-cored wires has obvious advantages. First, the welding process is more continuous, and automatic welding can be realized, thereby reducing welding joints. The production efficiency is greatly improved, wh...

Claims

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