JPH06344138A - Fire cracker arc welding method and coated backing made of non magnetic metal for fire cracker arc welding - Google Patents

Abstract

PURPOSE:To prevent a worker from complaining of eye disorders by suppressing the amount of the stuck spatter and the generation of pits. CONSTITUTION:A coated backing 3 which is provided with a contact point 5 of the force based on the gravity and a contact means 6 which does not act as the mass point of the force to the base metal, made of non-magnetic metal, and provided with venting holes 4 communicating with each other vertically of the sectional direction is provided on the surfaces of fire cracker welding material 2 divided by the line (Y axis) connecting the center 21 of the fire cracker welding material 2 to the intersection 22 of the fillet-welded corner part of the base metal 1. One end part of the coated backing 3 is embedded in the slag layer 26 to be generated as the welding is started, or one end part is brought extremely close to the surface 27 of the slag layer, and the fire cracker welding is executed while the fire cracker welding material 2 and its arc generating part being toward the intersection of the corner part to be welded of the base metal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to steel frames, bridges, shipbuilding,
Non-magnetic metal coating metal for horizontal arc welding (hereinafter horizontal welding) and horizontal arc welding (hereinafter horizontal welding) for fillet welding of machines, equipment, etc. ( Hereinafter, referred to as a coating allowance).

[0002]

2. Description of the Related Art The horizontal welding method for fillet welding of steel frames, bridges, shipbuilding, machinery, equipment, etc. has the characteristic of accurately following the welding line to a certain extent, and is highly skilled. It is a welding method that enables the welding work to be easily performed without depending on the method. However, the composite action caused by the deformation of the base metal, the deformation of the welding material, and other factors that occur when actually proceeding with the welding work is unexpectedly large, and the expected effect is not achieved. Is the reality.

[0003] The horizontal welding method disclosed by Hafergut in 1939, as shown in FIG. 6, was such that fillet welding was performed with a copper coating metal 3 being attached. Distortion occurs in the base material 1 during
The copper coating metal 3, the coated arc welding material 2, and the base metal 1 are displaced from their predetermined positions, and their cross-sectional shapes are evenly distributed on the left and right sides of the base metal 1 as shown in FIG. Moreover, the shape of the bead is well balanced, and the state in which the penetration into the base metal is sufficiently ensured is called “good bead” 3 when it is formed over the entire welding line.
0 is secured only in about 20% of the total welding area,
For this reason, it is extremely complicated and difficult, and moreover, there is no choice but to resort to rework welding which requires a high level of technology, and it has been difficult to respond to this in terms of the reliability required for the product.

After that, the inventors of the present invention mainly
By adjusting the eccentricity of the welding material and increasing the directivity of the arc, research has been repeated to solve the above situation. Patent Nos. 620, 561 and 63
9,712, Patent 675,297, Patent 95
7,035, Patent 971,851, Patent 97
Although the result was shown as No. 7,131, etc., the result was that the formation rate of good beads was about 80%,
Further improvement is desired, and no other research to be seen has been published.

[0005]

As described above, according to the conventional technique, a horizontal arc welding method is used in which welding work is carried out while mounting a coating metal covering both the base metal and the horizontal welding material. In the above, since the formation rate of good beads is not sufficient, the present invention increases the formation rate of good beads to 100%, and at the same time, there is a risk of causing eye damage due to arc leakage during welding work. And to prevent spatter from adhering to the welding area.

[0006]

Means for Solving the Problems The inventors of the present invention have completed the present invention as a result of intensive studies to solve the above problems. That is, the horizontal arc welding method of the present invention,
As shown in the outline in FIG. 1, in a horizontal welding method in which a welding operation is performed while mounting a coating metal 3 that covers both the base metal 1 and the horizontal welding material 2, the coating metal 3 has a melting temperature of 10
A coating made of a non-magnetic metal that has a thermal conductivity of 0.448 cal / cm · sec · ° C. or more at 20 ° C. and a temperature of 22 ° C. or more, and has a ventilation hole 4 that communicates vertically in the cross-sectional direction thereof. The horizontal welding, which is the metal 3 and is divided into two by the straight line (Y axis) connecting the center 21 of the horizontal welding material 2 and the intersection 22 of the welded corner formed by the base metal 1. A contact point 5 that acts as a mass point of force based on gravity is provided on both surfaces of the material 2. Further, it does not act on the base material 1 as a mass point of force based on gravity, or as a mass point of force based on gravity. Even if it works, it is provided with the contact means 6 capable of adjusting the position so that it works as a mass point smaller than the above mass point, and the horizontal welding material 2 and its arc generating part are directed to the welded corner part of the base material 1. With a structure that presses against As shown in FIG. 2, one end of the coating metal 3 made of non-magnetic metal is embedded in the slag layer 26 generated as the welding operation starts, or Surface 27 of slag layer 26
Kept in close proximity to the
Also, the horizontal arc welding method is characterized in that horizontal welding is performed while pressing the arc generating portion toward the welded corner of the base material 1.

The non-magnetic metal coating metal for horizontal arc welding of the present invention is a non-magnetic metal metal coating metal coating 3 for covering both the base material 1 and the horizontal welding material 2 as shown in FIG. The coating metal 3 used in the horizontal welding method in which welding work is performed while mounting the
Thermal conductivity at ℃ 0.448cal / cm ・ sec
・ Made of non-magnetic metal whose temperature is above ℃,
A cover plate having a vent hole 4 that communicates with the upper and lower sides in the cross-sectional direction, and has a center 21 for the transverse welding material 2.
And a contact point 5 acting as a mass point of force based on gravity on both surfaces of the horizontal welding material 2 which is divided by a straight line (Y-axis) connecting the welded corner intersection 22 formed by the base material 1. Further, even if the base material 1 does not act as a mass point of force based on gravity, or even if it acts as a mass point of force based on gravity, it is possible to act as a mass point smaller than the above mass point. It is a coating metal member 3 provided with contact means 6 that can be adjusted. Further, in the present invention, the contact means 6 capable of positional adjustment as shown in FIG.
Is a leaf spring 7 having a skirt structure, the contact means 6 capable of positional adjustment as shown in FIG. 4 is the moving contact means 8, and the contact means capable of positional adjustment as shown in FIG. It is preferable that the moving contact means 8 as 6 is a roller 10 that is elastically supported by being urged toward the base material 1 side by a spring 9. Further, the coating metal 3 of the present invention has at least two points in contact with the horizontal welding material 2 as its cross-sectional shape, and the straight line 24 connecting each contact 5 to the center 21 of the horizontal welding material and the base 20. It is preferable to adjust the angle θ formed between the axis 25 parallel to the horizontal axis 23 and the axis 25 to be 0 ° to 45 ° so as to obtain the non-magnetic metal coating die 3.

[0008]

In the present invention, as shown in FIG. 2, one end of the coating metal 3 is buried in the slag layer 26 generated during the welding work, or one end thereof is welded. Slag layer 2 that is generated with the progress of
Since the welding work is carried out while maintaining the state of being extremely close to the surface 27 of No. 6, the attachment of spatter to the surface of the base material 1 to be welded can be almost eliminated. Also,
Since the coating metal 3 is made of a non-magnetic metal, it is possible to prevent uneven formation of beats that are easily affected by the magnetic lines of force generated by the action of the electric current used during the welding work.

Further, the coating metal 3 used for welding work
Is manufactured from a non-magnetic metal having a melting temperature of 1022 ° C. or higher and a thermal conductivity of 0.448 cal / cm · sec · ° C. or higher at 20 ° C., the welding work can be performed using the coating metal 3. When proceeding, the risk that the coating metal 3 will be melted by the heat generated around the coating metal 3 is reduced, and the heat dissipation action that tends to be accumulated in the coating metal 3 is promoted, resulting in more stable operation. Welding work can proceed in this state.

According to the present invention, the coating metal 3 used in the welding operation is the coating metal 3 having the ventilation holes 4 which are vertically communicated with each other in the cross-sectional direction, so that the arc generation portion is generated as the welding operation progresses. The discharge of incoming gas from the system can be promoted, and as a result, the formation of pits in the weld can be avoided.

Further, with respect to the horizontal welding material 2, the surface of the horizontal welding material 2 is divided into two by a straight line (Y axis) connecting the center 21 of the horizontal welding material 2 and the intersection 22 of the welded corner formed by the base metal 1. Contact point 5 acting as a mass point of force due to gravity on top
Further, even if it does not act on the base material 1 as a mass point of force based on gravity, or even if it acts as a mass point of force based on gravity, it can act as a mass point smaller than the above mass point. Contact means 6 capable of precise adjustment
Since the coating metal plate 3 provided with is abutted, the force applied to the welding material 2 does not act in a biased direction, and the bead shape can be made good.

Since the upper surface of the horizontal welding material 2 is covered with the coating metal 3, the leakage of the welding arc from the outside of the system is extremely reduced during the progress of the welding work, and the eye damage of the operator can be suppressed. In the present invention, as shown in FIG. 3, the contact means 6 for adjusting the position of the coating metal 3 with respect to the base material 1 is a leaf spring 7 having a skirt structure, and as shown in FIG. The means 6 as the moving contact means 8,
Further, as shown in FIG. 5, the moving contact means 8 as the contact means 6 is a roller 10 for elastically supporting the base material 1 by urging it toward the base material 1 side by a spring 9 in either case. It makes it possible to always set the position of the coating plate 3 on the upper surface of the material 2 in the center, which results in a great improvement in the formation of the good beads 30.

In the present invention, as shown in FIG. 1, the cross-sectional shape of the horizontal welding material 2 contacts at least two points or more, and each contact 5 and the center 21 of the horizontal welding material 2 are contacted.
The non-magnetic metal coating metal member 3 formed by adjusting the angle θ formed between the straight line 24 connecting the line and the axis 25 parallel to the horizontal axis 23 of the substrate 20 to be 0 ° to 45 ° As described above, the formation rate of good beads is increased and the deposition amount of spatter is also reduced.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a constitutional state of each part prior to implementation of the present invention. FIG. 2 is a perspective view showing a configuration state of each part during welding work according to the present invention. 3 to 5 are perspective views of respective parts showing another embodiment of the present invention. FIG. 6 is a perspective view showing a conventional example. FIG. 7 is a cross-sectional view showing a good bead formation state.

Example 1 This example was carried out by the method shown in FIG. As a base material 1 for arc welding, a rolled steel material SM490A for welded structure defined in JIS G3106 is adopted, and its thickness is 19 mm, width is 160 mm, and length is 110.
A sample having a size of 0 mm was prepared so that it could be tested by the tensile test method for the front face fillet joint specified in JIS Z3131. When welding, the diameter is 7 mm and the length is 11
Select SWY11 of the core wire for the covered arc welding rod defined by JIS G3523 of 00 mm, and the effective welding length is 100.
Place 0 mm horizontal welding material 2 at fillet welding position, and
Four fillet welds were carried out on the sample, each over a length of 1000 mm.

In this case, a coating metal 2 made of C1100 tough pitch copper specified in JIS H3250 is used, and the metal coating 3 has a vent hole 4 having a diameter of 5 mm of 30 mm.
Are provided so as to be vertically connected to each other in the cross-sectional direction of the coating metal 3 at intervals of, and with respect to the horizontal welding material 2, its center 21
And a contact point that acts as a mass point of force based on gravity on both surfaces of the horizontal welding material divided by a straight line (Y axis) connecting the welded corner intersection 22 formed by the base material 1 and , Positional adjustment can be made so that it does not act as a mass point of gravity-based force on the base metal, or even if it acts as a mass point of gravity-based force, it can act as a smaller mass point than the above mass point. The mass of the coating metal having the contact means 6 was 50 kg / m, the welding position was downward, and the arc current was 330 A, and fillet welding was performed.

In this case, the straight line 24 connecting the contact 5 of the coating metal 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 forms an angle of 0 ° with the axis 25. The coating metal 3 was used in contact with the surface 27 of the slag layer 26 using gold 3. The chemical composition of the weld metal obtained by the horizontal welding carried out in this way is C in wt%.
Is 0.10%, Si is 0.25%, Mn is 1.17%, 0 is 359 ppm, and N is 26.
Since it was ppm, no remarkable difference was observed in the composition as compared with the conventional example.

Further, the amount of spatter adhering to the base material 1 was 1.2 g / m, which was extremely small, and the tensile strength of the cross-shaped fillet welded test piece was 543 N / mm ² ,
Almost no change from the conventional method, and the formation rate of good beads 30 is 1
It showed 00%, which was a very good result. Also,
As a pit generation condition, this was not observed at all over a length of 1000 mm.

Example: 2 A straight line 24 connecting the contact 5 of the coating metal 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 forms an angle of 30 ° with the axis 25, and the coating is performed. The metal 3 is immersed 1 mm below the surface 27 of the slag layer 26, and the vent hole 4 having a diameter of 5 mm is provided.
As a result of welding in the same manner as in Example 1 except that the gaps were provided at intervals of 50 mm, the amount of spatter attached to the base material 1 was 0.2 g.
/ M, and the tensile strength of the cruciform fillet welded specimen is 535 N / mm ² , which is almost the same as the conventional method, and the formation rate of the bead 30 is 100%, which is extremely good. It showed a good result. In addition, as a pit generation condition, this was not recognized at all over a length of 1000 mm.

Example 3: 3 The angle between the straight line 24 connecting the contact 5 of the coating metal 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 with the axis 25 is 45 °, and the coating is performed. Welding was performed in the same manner as in Example 1 except that the metal 3 was immersed 1 mm below the surface 27 of the slag layer 26, and ventilation holes having a diameter of 10 mm were provided at intervals of 30 mm. 0.3g attached to
The tensile strength of the cross-shaped fillet welded test piece is 540 N / mm ² , which is almost the same as the conventional method, and the formation rate of the bead 30 is 100%, which is extremely good. It showed a good result. In addition, as a pit generation condition, this was not recognized at all over a length of 1000 mm.

Example 4: 4 The coating metal 3 is made of brass, and the straight line 24 connecting the contact 5 of the metal coating 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 is between the axis 25. The angle is 30 °, the coating metal 3 is immersed 1 mm below the surface 27 of the slag layer 26, and the ventilation holes 4 having a diameter of 10 mm are provided at intervals of 50 mm. As a result of welding by welding, the amount of spatter adhering to the base material 1 was extremely small at 0.1 g / m, and the tensile strength of the cross-shaped fillet welded test piece was 530 N / m.
It was mm ^2, which was almost the same as that of the conventional method, and the formation rate of the good beads 30 was 100%, which was a very good result. The pit generation status is 1000
This was never observed over a length of mm.

Example 5: The coating metal is made of brass, and a straight line 24 connecting the contact point of the coating metal 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 is between the axis 25. The drawing angle θ was set to 30 °, the coating metal 3 was immersed 2 mm below the surface 27 of the slag layer 26, and the ventilation holes 4 having a diameter of 10 mm were provided at intervals of 100 mm. As a result of welding by welding, the amount of spatter adhering to the base material 1 is 0.4 g / m, which is extremely small, and the tensile strength of the cross-shaped fillet welded test piece is 545 N.
/ Mm ^2, which was almost the same as that of the conventional method, and the formation rate of the good beads was 100%, which was an extremely good result. In addition, the pit generation status is 1000m
This was never observed over a length of m.

Example 6: 6 The coating metal is made of brass, and the straight line 24 connecting the contact 5 of the metal coating 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 is between the axis 25. With the drawing angle θ set to 45 °, the coating metal 3 is immersed 1 mm below the surface 27 of the slag layer 26, and the ventilation metal 4 having a diameter of 5 mm is provided at intervals of 50 mm. As in the first embodiment, as shown in FIG. 5, roller 10 means that is biased toward the base material 1 side by a spring 9 and elastically supported as contact means for positional adjustment is used.
As a result of welding in the same manner as described above, the amount of spatter adhering to the base material 1 was 0.2 g / m, which was extremely small, and the tensile strength of the cross-shaped fillet welded test piece was 538 N / mm ² . There was almost no difference from the conventional method, and the formation rate of the good beads 30 was 100%, which was a very good result.
In addition, as a pit generation condition, this was not recognized at all over a length of 1000 mm.

Example 7: The coating metal is made of brass, and the straight line 24 connecting the contact 5 of the metal coating 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 is between the axis 25. The drawing angle θ is set to 45 °, the coating metal 3 is immersed 2 mm below the surface 27 of the slag layer 26, and the ventilation holes 4 having a diameter of 10 mm are provided at intervals of 30 mm. As shown in the drawing, as a result of welding in the same manner as in Example 1 except that a means for urging the skirt structure leaf spring 7 to urge the base material 1 side was used as a contact means for positional adjustment, as a result, spatter was generated in the base material. The amount adhered to 1 shows a good result of 0 g / m, and the tensile strength of the cruciform fillet welded test piece is 542 N / mm ² , which is almost the same as that of the conventional method and the formation rate of the good bead 30. Also showed 100%, showing a very good result. In addition, as a pit generation condition, this was not recognized at all over a length of 1000 mm.

Comparative Example 1 As a result of welding in the same manner as in Example 1 except that the coating metal 3 was not used, the amount of spatter adhering to the base material 1 was 12.3.
In addition to the large amount of g / m, the tensile strength of the cross-shaped fillet welded test piece was 538 N / mm ^2, which was almost the same as the method of the present invention, but the formation rate of the good beads 30 was only 81%. However, it could not show a good result.

Comparative Example: 2 The coating metal 3 was moved upward from the surface 27 of the slag layer 26 by 2 mm.
As a result of welding in the same manner as in Example 1 except that they were placed apart from each other, the amount of spatter adhering to the base material 1 was as large as 9.6 g / m, and the tensile strength of the cross-shaped fillet welded test piece was obtained. Was 542 N / mm ^2, which was almost the same as the method of the present invention, and the formation rate of the good beads 30 was 88%. In this case, four pits were confirmed for the length of 1000 mm.

COMPARATIVE EXAMPLE 3 3 The coating metal 3 was placed as a brass and was placed 2 mm above the surface 27 of the slag layer 26, and contacted with the horizontal welding material 2 and the contact 5 of the coating metal 3 and the horizontal welding material 2 As a result of welding in the same manner as in Example 1 except that the angle θ drawn by the straight line 24 connecting the center 21 of the cross section with the axis 25 was 30 °, the tensile strength of the cross-shaped fillet welded test piece was 545 N. / Mm ^2, which was almost the same as that of the method of the present invention, but spatter was the base material 1.
The amount attached to was as large as 12.1 g / m,
The formation rate of the good beads 30 was only 85%.
In this case, 6 pits were confirmed for the length of 1000 mm.

Comparative Example: 4 The coating metal 3 was 2 mm upward from the surface 27 of the slag layer 26.
The angle θ drawn by the straight line 24 connecting the contact point 5 of the coating metal 3 in contact with the horizontal welding material 2 and the center 21 of the horizontal welding material 2 with the axis 25 is set to 75 °, Although, in this case, a recess is formed at a portion in contact with the welding material 2, a leaf spring 7 or a spring 9 is provided at the contact point 5 with the base material 1.
As a result of welding in the same manner as in Example 1 except that the above method was not adopted, the tensile strength of the cross-shaped fillet welded test piece was 5
35 N / mm ^2, which was almost the same as the method of the present invention, but the amount of spatter adhering to the base material 1 was 13.5 g.
In addition to a large amount, the formation rate of the good beads 30 was only 90%, and sufficient results could not be obtained. In this case, it was confirmed that 5 pits were formed in the length of 1000 mm.

Comparative Example 5: The coating metal 3 made of aluminum bronze is placed 1 mm upward from the surface 27 of the slag layer 26, and the contact 5 of the coating metal 3 in contact with the horizontal welding material 2 and the horizontal welding. The welding work was performed in the same manner as in Example 1 except that the angle θ drawn by the straight line 24 connecting the center 21 of the material 2 with the axis 25 was 45 °. A part of the aluminum bronze was melted in and the satisfactory result was not obtained.

Comparative Example 6: Example 1 except that the coating metal 3 was made of stainless steel, and the coating metal 3 was placed so as not to be separated from the surface 27 of the slag layer 26 on which the metal coating 3 was produced, and the welding operation was performed. Welding work was carried out in the same manner as above, but some of the stainless steel melted into the weld metal during the welding work, and satisfactory results were not obtained.

The above results are collectively shown in Table 1.

[0032]

[Table 1]

As described above, according to the present invention, the formation rate of the good beads 30 is improved without affecting the welding strength, and the spatter generation amount is reduced as much as possible. It succeeded in avoiding generation. In addition, the welder did not complain of any eye damage.

[0034]

EFFECTS OF THE INVENTION According to the horizontal arc welding method and the non-magnetic metal coating plate of the present invention, the rate of formation of good beads can be improved without affecting the welding strength, and the amount of spatter deposited can be improved. Not only has it been reduced as much as possible, it has also become possible to carry out fillet welding while suppressing the occurrence of pits. In addition, welding workers did not complain of eye damage at all, improving work safety.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration state of each portion prior to implementation of the present invention.

FIG. 2 is a perspective view showing a configuration state of each portion during welding work according to the embodiment of the present invention.

FIG. 3 is a perspective view of each part showing another embodiment of the present invention.

FIG. 4 is a perspective view of each part showing another embodiment of the present invention.

FIG. 5 is a perspective view of each part showing another embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional example.

FIG. 7 is a cross-sectional view showing a generation state of good beads.

[Explanation of symbols]

1: Base material. 2: Welding material. 3: Cover money. 4: Vent. 5: Contact point. 6: Contact means. 7: Leaf spring. 8: Moving contact means. 9: Spring. 10: Roller. 20: Foundation. 21: Center. 22: intersection of welded corners. 23: Horizontal axis. 24: straight line. 25: axis. 26: Slag layer. 27: Surface. 30: Good bead.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Araki 5-723, Koya, Matsuyama City, Ehime Prefecture (72) Inventor Tsukasa Hirahara 5 of 644 Takahashi, Imabari City, Ehime Prefecture

Claims (12)

[Claims] 1. A horizontal arc welding method in which a welding operation is performed while mounting a coating metal covering both a base metal and a horizontal welding material, in which the coating metal has a melting temperature of 1022 ° C. or higher and a temperature of 20 ° C. Thermal conductivity at 0.448 cal / c
A metal cover made of a non-magnetic metal of m / sec / ° C or higher and provided with ventilation holes that communicate with each other in the vertical direction of its cross section, and its center with respect to the horizontal welding material. And a contact point that acts as a mass point of force based on gravity on both surfaces of the horizontal welding material divided by a straight line (Y axis) connecting the welded corner intersection of the base metal The contact means that does not act on the material as a mass point of force based on gravity, or even if it acts as a mass point of force based on gravity, it can act as a smaller mass point than the above mass point. Using a non-magnetic metal coating dowel provided with, one end of the above-mentioned coating dowel is embedded inside the slag layer generated as the welding operation starts, or one end of the coating dowel is Table of slag layer above Very together keep a state of being close, Yoko置 weld material and the lateral location arc welding method and performing Yoko置 welding while the arc generating unit is pressed against the welded corners intersection direction of the base material. 2. The non-magnetic metal coating metal is further in contact with the horizontal welding material at least at two or more points as its cross-sectional shape, and a straight line connecting each contact and the center point of the horizontal welding material is formed. 2. The non-magnetic metal coating metal die, which is molded so that an angle θ formed between the substrate and an axis parallel to the horizontal axis is 0 ° to 45 °. Horizontal arc welding method. 3. The horizontal arc welding method according to claim 1, wherein the horizontal arc welding is downward fillet welding. 4. The horizontal arc welding method according to claim 1, wherein the contact means capable of positional adjustment is a leaf spring having a skirt structure. 5. The horizontal arc welding method according to claim 1, wherein the contact means capable of positional adjustment is a moving contact means. 6. A roller which is urged toward the base material by a spring and elastically supported by the moving contact means as a contact means capable of positional adjustment. Horizontal arc welding method. 7. A non-magnetic metal coating metal for use in a horizontal arc welding method in which welding is performed while mounting a metal coating that covers both the base metal and the horizontal welding material, and the metal coating is The melting temperature is 1022 ° C or higher, and the thermal conductivity at 20 ° C is 0.448 cal / cm · sec · ° C.
It is a coating metal deposit made from the above non-magnetic metal,
And, on the both sides of the horizontal welding material, which is divided into two by a straight line (Y axis) connecting the center of the horizontal welding material and the intersection of the welded corners formed by the base metal, it is based on gravity. It has a contact point that acts as a mass point of force, and it does not act as a mass point of force due to gravity on the base metal, or even if it acts as a mass point of force due to gravity, it is smaller than the above mass point. A horizontal arc welding characterized in that it is provided with a contact means that can be positionally adjusted so as to act as a mass point, and has a structure that presses the horizontal welding material and its arc generating portion in the direction of the intersection of the welded corners of the base metal. Non-magnetic metal coating for metal. 8. A non-magnetic metal coating metal is in contact with at least two points as a cross-sectional shape of the horizontal welding material, and a straight line connecting each contact and the center of the horizontal welding material is a base. Angle θ drawn from the axis parallel to the horizontal axis is 0 ° ~
The non-magnetic metal-made coating metal member according to claim 7, which is molded and adjusted to have an angle of 45 °. 9. The non-magnetic metal coating metal for horizontal arc welding according to claim 7, wherein the contact means capable of adjusting the position is a leaf spring having a skirt structure. 10. The non-magnetic metal coating metal for horizontal arc welding according to claim 7, wherein the contact means capable of positional adjustment is a moving contact means. 11. The roller according to claim 7, wherein the moving contact means as a contact means capable of positional adjustment is a roller biased toward the base material side by a spring and elastically supported. 8. A coating die made of non-magnetic metal for horizontal arc welding according to item 8. 12. The horizontal arc welding method according to claim 1, wherein the non-magnetic metal is red copper, oxygen-free copper, or tough pitch copper, or the method according to claim 7 or 11. The non-magnetic metal coating metal plate for horizontal arc welding according to any one of the claims.