CN212239696U

CN212239696U - Thread welding core welding rod

Info

Publication number: CN212239696U
Application number: CN202020191897.1U
Authority: CN
Inventors: 魏宏兵
Original assignee: Wuxi Welding Energy Technology Co ltd
Current assignee: Wuxi Welding Energy Technology Co ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-12-29
Anticipated expiration: 2030-02-21

Abstract

The utility model discloses a screw thread core wire welding rod, including the main part section, the main part section includes core wire and the cladding is at the flux coat in the core wire outside, and the surface of core wire and the internal surface on flux coat are equipped with the helicitic texture who matches each other. The utility model overcomes traditional welding rod welding melts and covers inefficiency, electric energy effective utilization is low, the welding is melted deeply, melt shortcomings such as wide range is narrow, screw thread core wire unit length internal surface area is bigger, it is higher that the cladding efficiency is carried out to transfer heat in the unit time under the same electric current, core wire self melts the heat absorption height and makes electric energy loss lower, compare welding current with the ordinary welding rod of diameter and can show and reduce, and welding arc has the autonomous rotation function, to the low heat input welding of non ferrous metal and molten bath stirring with higher speed gas, it has positive contribution to float on the sediment etc., the reduction of welding current plays important support to the shallow depth of fusion control of build-up welding of welding rod, with comparing the hot wire TIG build-up welding mode, build-up welding efficiency can show and improve, welding cost is showing and reduces.

Description

Thread welding core welding rod

Technical Field

The utility model relates to a welding material technical field for shielded metal arc welding, concretely relates to screw thread core wire welding rod.

Background

In electric arc welding, the shielded metal arc welding has the longest application history, and is widely applied to the fields of metallurgy, steel structures, ships, bridges, maritime work, pressure vessels and the like due to simple and flexible operation, and the specifications of commonly used shielded metal arc welding are 2.5mm, 3.2mm, 4.0mm, 5.0mm and the like. Especially for field construction, high-altitude construction and the like, the shielded metal arc welding equipment is simple and does not need gas, so the shielded metal arc welding equipment has the characteristic of difficult replacement. However, in the conventional shielded metal arc welding, a welding rod with a diameter of 3.2mm is taken as an example, the thermal efficiency is low (about 0.65-0.85), the welding current range is narrow (about 90-130A), the melting coefficient is low, the welding seam becomes wider and increases at a low welding speed, the efficacy is reduced, the welding heat input is remarkably increased at a low welding speed, and the welding seam becomes narrower and becomes severely uneven at a high welding speed, so that undercutting and waveform sharpening are easily generated. In addition, in the case of welding of stainless steel, nickel-based alloy, etc. having poor fluidity in the molten pool, blowholes are easily generated in the conventional shielded metal arc welding, and the heat input is difficult to control. Therefore, the traditional welding rod electric arc welding has the application limitation in a plurality of important material welding occasions while the operation is simple and flexible.

The Chinese invention patent with publication number CN101642854 and the Chinese utility model patent with publication number CN208358081U disclose a multi-strand welding rod respectively, which provide a welding rod based on a similar steel wire rope core, but the rigidity of the core is difficult to be ensured by the similar steel wire rope core welding rod, and the pore medicinal powder between the wires is difficult to be filled uniformly and is difficult to be compacted, so that the residual of the internal air is easy to be generated and the welding rod is easy to be eccentric, therefore, the formal production putting and application reports are not seen so far.

Disclosure of Invention

The utility model aims at providing a screw thread core wire welding rod, production simple process, rigidity is good, is difficult for appearing the air residue and off-centre to can obtain high melting coefficient, low welding heat input, and welding arc autonomous rotation's welding rod, for the welded joint optimization technology, reduce the loss with the reality, for the enterprise improves production efficiency, reduces the cost of enterprise, for social saving energy consumption, reduction emission.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a screw thread core wire welding rod, includes centre gripping section, main part section and the arc-striking section that connects gradually along its length direction, the main part section includes the core wire and the cladding is in the coating layer in the core wire outside, the surface of core wire with the internal surface of coating layer is equipped with the helicitic texture who matches each other, helicitic texture includes the screw thread that forms along the helix.

The welding core is arranged in the middle and used as a conductive electrode for filling metal for melting, and the powder is arranged at the periphery of the thread welding core and in the thread gap and is condensed into a coating which is used for protecting a welding arc molten pool and improving cladding metal alloy components. The utility model overcomes traditional welding rod welding melts and covers inefficiency, electric energy effective utilization is low, the welding is melted deeply, melt shortcomings such as wide range is narrow, screw thread core wire unit length internal surface area is bigger, high and then make cladding efficiency show more in the unit time under the same electric current, core wire self melts and absorbs heat highly makes electric energy loss lower, and compare welding current with the ordinary welding rod of diameter and can show and reduce, and welding arc has the autonomous rotation function, with gas with higher speed in low heat input welding molten bath of non ferrous metal and the stirring of molten bath, it has positive contribution to float on the sediment etc., and welding current's reduction plays important support to the control of the shallow depth of fusion of build-up welding of welding rod electric arc welding, with than hot wire TIG build-up welding mode, build-up welding efficiency can show and improve, and welding cost is showing and reduces. The utility model discloses especially, be fit for thick wall material narrow gap welding, the low heat input of non ferrous metal welds, and the application in build-up welding fields such as corrosion-resistant, wear-resisting.

The coating layer of the utility model is closely combined on the core wire. Preferably, the sheath is formed by condensation on the outer surface of the core wire.

The utility model discloses do not restrict pitch, as long as can realize and be fit for using can. For example, the threads may be equidistant threads or non-equidistant threads.

The utility model discloses do not restrict the screw thread profile, as long as can realize and be fit for using can. For example, the thread profile is a triangular thread or a rectangular thread or a trapezoidal thread or a buttress thread.

The utility model discloses do not restrict the core wire external diameter, as long as can realize and be fit for using can. For example, the nominal diameter of the thread is 2.0mm to 10.0 mm. In particular, the nominal diameter of the thread may be 2.0mm or 2.4mm or 3.2mm or 4.0mm or 5.0mm or 6.0mm or 10.0 mm.

The utility model discloses do not restrict the screw thread number, as long as can realize and be fit for using can. For example, the thread structure includes a single thread formed along one helix or a multiple thread formed along a plurality of helices equally spaced in the axial direction.

The utility model discloses do not restrict the tooth form to the different screw threads of multi-thread, as long as can realize and be fit for using can. The different threads of the multiple start thread may have the same or different thread profiles.

The utility model discloses not restricting the nominal diameter of the different screw threads of multi-thread as long as can realize and be fit for using can. The nominal diameters of the different threads of the multiple start thread are the same or different.

The utility model discloses do not restrict the material to the core wire, as long as can realize and be fit for using can. For example, the core wire is carbon steel or stainless steel or a nickel-based alloy or a titanium alloy.

The utility model discloses do not restrict the material to the coating, as long as can realize and be fit for using can. For example, the medicinal skin layer is an acidic medicinal skin or an alkaline medicinal skin or a cellulose medicinal skin.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1) the utility model discloses a screw thread core wire welding rod compares with the traditional welding rod of same diameter: the welding stable combustion current is lower, the fusion depth is shallower and the fusion width is wider under the condition of low current; under the condition of stable combustion of the current, the welding current density is higher and the fusion depth is larger; the welding current has the characteristic of autonomous rotation, so that the stirring of a molten pool can be facilitated, and the discharge of defects such as gas, slag and the like is accelerated; under the condition of the same cladding efficiency, the welding heat input is lower, and the energy consumption is reduced; welding is melted along with the welding rod, electric arc is fed to the autonomous rotation along with the screw thread, narrow gap welding can be realized, and the influence of magnetic blow is reduced.

2) The utility model discloses a screw thread core wire welding rod compares with diameter stranded welding rod: the rigidity of the welding core is better; the pore filling is more dense, and no air residue exists; the processing cost is lower.

3) The utility model discloses a screw thread core wire welding rod, the utility model discloses engineering fields such as the welding of specially adapted large-scale structure spare, non ferrous metal welding, narrow gap welding, surfacing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that some drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without creative efforts for those skilled in the art.

3 FIG. 3 1 3 is 3 a 3 front 3

view

3 and 3 cross 3- 3 sectional 3 A 3- 3 A 3 cross 3- 3 sectional 3 view 3 of 3 a 3 single 3- 3 wire 3 threaded 3 core 3 wire 3 in 3 accordance 3 with 3 a 3 first 3 embodiment 3; 3

FIG. 2 is a side view of FIG. 1;

3 FIG. 3 3 3 is 3 a 3 front 3

view

3 and 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 a 3 two 3- 3 wire 3 isometric 3 thread 3 core 3 wire 3 of 3 the 3 second 3 embodiment 3; 3

FIG. 4 is a side view of FIG. 3;

3 FIG. 35 3 is 3 a 3 front 3

view

3 and 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 a 3 three 3- 3 start 3 equidistant 3 threaded 3 core 3 wire 3 of 3 the 3 third 3 embodiment 3; 3

FIG. 6 is a side view of FIG. 5;

3 FIG. 3 7 3 is 3 a 3 front 3

view

3 and 3 cross 3- 3 sectional 3 A 3- 3 A 3 cross 3- 3 sectional 3 profile 3 of 3 a 3 four 3- 3

start

3, 3 non 3- 3 equidistant 3 threaded 3 core 3 wire 3 of 3 an 3 embodiment 3; 3

FIG. 8 is a side view of FIG. 7;

3 FIG. 3 9 3 is 3 a 3 front 3

view

3 and 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 a 3 six 3- 3 wire 3 isometric 3 threaded 3 core 3 wire 3 of 3 an 3 embodiment 3; 3

FIG. 10 is a side view of FIG. 9;

3 fig. 3 11 3 is 3 a 3 front 3 view 3 and 3 a 3 cross 3- 3 sectional 3 view 3 a 3- 3 a 3 of 3 a 3 three 3- 3 start 3 different 3 threaded 3 core 3 wire 3 of 3 the 3 sixth 3 embodiment 3. 3

Fig. 12 is a side view of fig. 11.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "periphery", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-12, a threaded core wire welding rod comprises a clamping section 1, a main body section and an arc ignition section 2 which are sequentially connected along the length direction of the welding rod, wherein the main body section comprises a core wire 3 and a coating layer (not shown) coated outside the core wire 3, the outer surface of the core wire 3 and the inner surface of the coating layer are provided with thread structures which are matched with each other, and the thread structures comprise threads formed along a spiral line.

Example one

Referring to fig. 1-2, the core wire chemistry is primarily carbon (C) 0.15%, manganese (Mn) 1.25%, silicon (S i) 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%, and iron (Fe) balance, as shown in the legend therein. The thread clearance and the periphery are coated with alkaline coatings, the nominal diameter of the thread is 6mm, the thread height of the thread is 0.75mm, the thread pitch is 2mm, and the thread form is a semicircle. After the coating of the peripheral coating, the total diameter of the welding rod can reach more than 7 mm.

Example two

Referring to fig. 3-4, the core wire chemistry is primarily carbon (C) 0.12%, manganese (Mn) 0.04-1.6%, silicon (S i) 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%, and the balance iron (Fe), as shown in the legend therein. The thread clearance and the periphery are coated with alkaline coatings, the nominal diameter of the thread is 4mm, the thread height is 0.5mm, the thread pitch is 3mm, and the thread form is a semicircle. After the coating of the peripheral coating, the total diameter of the welding rod can reach more than 5 mm.

EXAMPLE III

Referring to fig. 5-6, the core wire chemistry is mainly, as shown in the legend therein, carbon (C) 0.08%, manganese (Mn) 0.5-2.5%, silicon (S i) 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%, balance iron (Fe). The thread clearance and the periphery are coated with alkaline coatings, the nominal diameter of the thread is 3.2mm, the thread height is 0.5mm, the thread pitch is 4.5mm, and the thread form is a semicircle. After the coating of the peripheral coating, the total diameter of the welding rod can reach more than 4 mm.

Example four

Referring to fig. 7-8, the core wire chemistry is shown as carbon (C) 0.20%, manganese (Mn) 4.50%, total iron content of other elements 2.00%, balance (Fe), as illustrated in the legend. The thread clearance and the periphery are coated with low sodium hydrogen type coating, the nominal diameter of the thread is 5.0mm, the thread height of the thread is 1mm, the thread pitch is 12mm, and the thread type is a semicircle. After the coating of the peripheral coating, the total diameter of the welding rod can reach more than 6 mm.

EXAMPLE five

Referring to fig. 9-10, the core wire chemistry is primarily carbon (C) 5.50%, manganese (Mn) 1.00%, silicon (S i) 3.50%, sulfur (S) 0.035%, phosphorus (P) 0.035%, chromium (Cr) 25.00%, molybdenum (Mo) 3.00%, and the balance iron (Fe), as shown in the illustrations therein. The thread clearance and the periphery are coated with graphite type coating, the nominal diameter of the thread is 4mm, the thread height is 0.5mm, the thread pitch is 9mm, and the thread type is a semicircle. After the coating of the peripheral coating, the total diameter of the welding rod can reach more than 5 mm.

EXAMPLE six

Referring to fig. 11-12, as shown in the legend, the core wire mainly contains carbon (C) 0.10%, manganese (Mn) 5.0-10.0%, silicon (S i) 1.0%, copper (Cu) 0.50%, (S) 0.020%, phosphorus (P) 0.020%, nickel (Ni) 60.0% or more, chromium (Cr) 13.0-17.0%, titanium (Ti) 1.0%, niobium (Nb) 1.0-3.5%, tantalum (Ta) 0.30%, iron (Fe) 10.0%, and other elements 0.50%. The thread clearance and the periphery are coated with titanium oxide of more than 30 percent and titanium calcium type coating of carbonate of less than 20 percent, the nominal diameter of the thread is 6m, the thread height is 1mm, the thread pitch is 12mm, and the thread type is a combination of semicircular, blade-shaped and rectangular threads. After the coating of the peripheral coating, the total diameter of the welding rod can reach more than 7 mm.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a screw thread core wire welding rod, includes centre gripping section, main part section and the arc-striking section that connects gradually along its length direction, the main part section includes the core wire and the cladding is in the medicine cortex in the core wire outside, its characterized in that, the surface of core wire with the internal surface of medicine cortex is equipped with the helicitic texture who matches each other, helicitic texture includes the screw thread that forms along the helix.

2. The threaded core electrode of claim 1, wherein the flux sheath is condensation molded onto the outer surface of the core wire.

3. The threaded core electrode of claim 1, wherein the threads are equidistant threads or non-equidistant threads.

4. The threaded core electrode of claim 1, wherein the thread profile is a triangular thread or a rectangular thread or a trapezoidal thread or a buttress thread.

5. The threaded core electrode of claim 1, wherein the nominal diameter of the thread is 2.0mm to 10.0 mm.

6. A threaded core electrode according to any one of claims 1 to 5, wherein said thread structure comprises a single thread formed along one helix or a multiple thread formed along a plurality of helices equally spaced in the axial direction.

7. The threaded core electrode of claim 6, wherein the different threads of the multiple start thread are of the same or different thread profile.

8. The threaded core electrode of claim 6, wherein the nominal diameters of the different threads of the multiple start thread are the same or different.

9. The threaded core electrode of claim 1, wherein the core wire is carbon steel or stainless steel or a nickel-based alloy or a titanium alloy.

10. The threaded core electrode of claim 1, wherein the sheath layer is an acidic sheath or a basic sheath or a cellulosic sheath.