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Threaded core welding rod

A thread and welding core technology, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems such as the difficulty in filling the pores evenly, the eccentricity of the internal air residual electrode, and the difficulty in ensuring the rigidity of the welding core, etc., to achieve Wide melting width, reduced welding current and high welding current density

Pending Publication Date: 2020-05-12
无锡焊能达焊业科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The Chinese invention patent with the publication number CN101642854 and the Chinese utility model patent with the authorized announcement number CN208358081U respectively disclose a multi-strand welding rod, and provide a kind of welding rod based on a "steel rope" core as the welding core, but this type of " It is difficult to ensure the rigidity of the welding core for the "wire rope" core electrode, and it is difficult to fill the pores between the wires evenly and compact it, so it is easy to generate internal air residue and eccentricity of the electrode. Therefore, no formal production has been seen so far. and application coverage

Method used

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Embodiment 1

[0031] see figure 1 , as shown in the legend, the chemical composition of the welding core is mainly carbon (C) 0.15%, manganese (Mn) 1.25%, silicon (Si) 0.90%, sulfur (S) 0.035%, phosphorus (P) 0.035%, nickel (Ni) 0.30%, chromium (Cr) 0.20%, molybdenum (Mo) 0.30%, vanadium (V) 0.08%, iron (Fe) balance. The thread gap and the periphery are coated with alkaline coating. The nominal diameter of the thread is 6mm, the thread height is 0.75mm, the pitch is 2mm, and the thread shape is semicircle. After the peripheral coating is coated, the total diameter of the electrode can reach more than 7mm.

Embodiment 2

[0033] see figure 2 , as shown in the legend, the chemical composition of the welding core is mainly carbon (C) 0.12%, manganese (Mn) 0.04-1.6%, silicon (Si) 0.80%, sulfur (S) 0.030%, phosphorus (P) 0.020% , nickel (Ni) 0.25%, chromium (Cr) 0.15%, molybdenum (Mo) 0.35%, vanadium (V) 0.05%, iron (Fe) balance. The thread gap and the periphery are coated with alkaline coating. The nominal diameter of the thread is 4mm, the thread height is 0.5mm, the pitch is 3mm, and the tooth shape is semicircle. After the peripheral coating is coated, the total diameter of the electrode can reach more than 5mm.

Embodiment 3

[0035] see image 3, as shown in the legend, the chemical composition of the welding core is mainly carbon (C) 0.08%, manganese (Mn) 0.5-2.5%, silicon (Si) 1.00%, sulfur (S) 0.030%, phosphorus (P) 0.040% , nickel (Ni) 9.0-11.0%, chromium (Cr) 18.0-21.0%, molybdenum (Mo) 0.75%, copper (Cu) 0.75%, niobium tantalum (Nb+Ta) 8*C-1.00%, iron (Fe )margin. The thread gap and the periphery are coated with alkaline coating. The nominal diameter of the thread is 3.2mm, the thread height is 0.5mm, the pitch is 4.5mm, and the thread shape is semicircle. After the peripheral coating is coated, the total diameter of the electrode can reach more than 4mm.

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Abstract

The invention discloses a threaded core welding rod. The threaded core welding rod comprises a main body section, the main body section comprises a core and a welding flux skin layer coated on the outer side of the core, and thread structures matched with each other are correspondingly arranged on the outer surface of the core and the inner surface of the welding flux skin layer. According to thethreaded core welding rod, the disadvantages such as low welding cladding efficiency, low effective utilization rate of electric energy, low welding penetration and narrow melting range of a traditional welding rod are overcome, the surface area of thread cored welding rod per unit length is larger, the heat transfer and cladding efficiency per unit time under the same current is higher, and the self melting heat absorption of the core is higher, so that the electric energy loss is lower, the welding current can be significantly reduced compared with a common welding rod of the same diameter,welding arc has the function of self rotation, and positive contribution to the low heat input welding of non-ferrous metals and the stirring acceleration of floating of gas and slag in a molten poolis achieved; and reducing of welding current plays an important supporting role in the control of the surfacing shallow welding penetration of welding rod arc welding, compared with hot wire TIG surfacing, the efficiency of surfacing can be significantly improved, and the welding costs can be significantly reduced.

Description

technical field [0001] The invention relates to the technical field of welding materials for electrode arc welding, in particular to a threaded cored electrode. Background technique [0002] In arc welding, electrode arc welding has the longest application history, and because of its simple and flexible operation, it is widely used in many fields such as metallurgy, steel structure, ship, bridge, marine engineering, pressure vessel, etc. The commonly used welding rod specifications are 2.5mm, 3.2 mm, 4.0mm, 5.0mm, etc. Especially for field construction and high-altitude construction, the electrode arc welding equipment is simple and does not require gas, so it has the characteristics of being difficult to replace. However, the traditional electrode arc welding takes an electrode with a diameter of 3.2mm as an example, which has low thermal efficiency (about 0.65-0.85), narrow welding current range (about 90-130A), low melting coefficient, and slow welding speed. Widen the ...

Claims

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Application Information

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IPC IPC(8): B23K35/12B23K35/30
CPCB23K35/0261B23K35/3053
Inventor 魏宏兵
Owner 无锡焊能达焊业科技有限公司
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