What are the main welding specification parameters of submerged arc welding?

The welding specification parameters of submerged arc welding mainly include: welding current, arc voltage, welding speed, wire diameter and extension length, etc.

1. Welding current.

Under general welding conditions, the penetration of the weld is proportional to the welding current.

With the increase of welding current, the penetration depth and weld residual height increase significantly, while the width of the weld does not change much. At the same time, the melting amount of the welding wire also increases accordingly, which increases the residual height of the weld. As the welding current decreases, both the penetration depth and the residual height decrease.

2. Arc voltage.

With the increase of arc voltage, the welding width increases significantly, while the penetration depth and weld residual height decrease. However, when the arc voltage is too large, it will not only make the penetration smaller and produce unpenetrated welding, but also lead to defects such as poor weld forming, difficulty in slag removal, and even undercut. Therefore, while increasing the arc voltage, the welding current should also be increased appropriately.

3. Welding speed.

When the welding speed increases while other welding parameters remain the same, the welding heat input decreases correspondingly, resulting in a decrease in the penetration of the weld. Too much welding speed can cause defects such as lack of penetration. In order to ensure the welding quality, it is necessary to ensure a certain amount of welding heat input, that is, to increase the welding speed in order to improve productivity, and at the same time, the welding current and arc voltage should be increased accordingly.

4. Wire diameter and extension length.

When other welding parameters remain unchanged and the diameter of the wire increases, the diameter of the arc column increases, that is, the current density decreases, which will cause the width of the weld to increase and the penetration depth to decrease. Conversely, the penetration depth increases and the weld width decreases.

When other welding parameters remain unchanged and the length of the welding wire increases, the resistance also increases, the preheating effect of the extended part of the welding wire increases, and the melting speed of the welding wire accelerates, resulting in the shallower penetration depth and the residual height of the weld increases, so the length of the welding wire must be controlled, and it should not be too long.

5. Welding wire inclination.

The inclination direction of the welding wire is divided into forward and backward inclination. Depending on the direction and magnitude of the inclination angle, the force and heat of the arc on the weld pool are also different, which affects the formation of the weld. When the wire is tilted back at a certain angle, the weldment in front of the weld pool is preheated because the arc points to the welding direction, and the liquid metal discharge effect of the arc on the weld pool is weakened, resulting in a wide weld and a shallow penetration depth.

On the contrary, the width of the weld is small and the penetration depth is large, but it is easy to produce unfused and undercut at the edge of the weld, and the deformation of the weld is poor.

6. Miscellaneous. a. Groove shape.

b. Root gap.

c. Thickness of weldments and heat dissipation conditions of weldments.

Weld form. Welding position.

Bevel form. Welding levels.

Leg height. Welding method.

Soldering power supply model.

Welding power supply polarity.

Wire type. Welding wire grade.

Wire diameter. Flux grade.

Flux drying. Welding current.

Arc voltage. Welding speed.

Summary. Hello, for your question submerged arc welding parameters formula? Here's what I answered:

The submerged arc welding parameters are: 1High voltage, low current, stable welding, ***.

2.Low voltage, high current, welding depth, fast speed. 3.

The current is small, the arc is weak, and it is suitable for thin materials to prevent burn-through. 4.The current is large, the arc is strong, it is suitable for thick materials, and the welding speed is accelerated.

5.The small diameter of the electrode makes it suitable for small and small materials, especially for the outer and inner corners. 6.

The large diameter of the electrode makes it suitable for both coarse and large materials.

Hello, for your question submerged arc welding parameters formula? I made the following answers: The submerged arc welding parameter formula of the Shuzi Hall has:

1.The voltage is high, the current is low, and the welding is stable. 2.

Low voltage, high current, welding depth, fast speed. 3.The current is small, the arc is weak, and it is suitable for thin materials to prevent burn-through.

4.The current is large, the arc of the electric limb is strong, and it is suitable for thick materials and accelerates the welding speed. 5.

The small diameter of the electrode makes it suitable for small and small materials, especially for the outer and inner corners. 6.The large diameter of the electrode makes it suitable for both coarse and large materials.

Can you give a plate thickness of 10 to 20 thicknesses without opening a groove, can you give a table?

My abilities are limited, and you need to consult a professional

You are a big man.

Can you give a parameter table for submerged arc welding?

For your question of hail, I give the following answers: The parameters of submerged arc welding are as follows: Wire diameter:

Welding current: 250A voltage: 25V welding speed:

20-30cm min electrode spacing: Peifan 6-8mm welding angle: 60° welding wire supply speed:

The formula for the welding parameters of submerged arc welding is: one arc top is dual-purpose, and perforation is forming; Horizontal welding arc extinguishing hook, upward welding upward.

1. "One arc top for two purposes": that is, to achieve the purpose of welding on one side and forming on both sides, the welding arc must be used on both sides, generally 2 3 burn on the front and 1 3 burn on the back.

2. "Perforation is the forming of key segments": that is, only the arc penetrates the blunt edge to form a molten hole before it can be formed on the back.

3. "Horizontal welding arc extinguishing hook", that is, the welding rod is arced on the upper side of the root of the groove during horizontal welding, and the upper blunt edge is melted and then pulled obliquely to the lower side of the root of the groove, and the lower blunt edge is melted to form a complete absolute or molten pool after the hook extinguishes the arc, and the process of this transport bar is the hook back, and so on and so on until the welding of the entire weld is completed.

4. "Upright welding upwards" means that after the upward welding arc, quickly give the welding rod an upward jacking force, depress the arc to melt the blunt edge, and ensure that the groove is filled with molten iron to prevent the back from collapsing, and to prevent the formation of welding nodules under the front molten iron.

Precautions for electric welding:

1. Construction workers must obtain special types of work operation certificates and related qualifications.

2. Welding operations in high-risk places and important places must be approved by safety management personnel! No construction shall be carried out in the fire ban zone without going through the fire approval procedures.

3. Before carrying out construction operations, it is necessary to understand the surrounding situation, understand the key parts of fire hazards, and clean up the flammable and combustible materials near the welding construction site to fully understand the internal situation of the welded objects.

4. Containers filled with flammable and explosive materials shall not be welded until they are thoroughly cleaned!

5. Electric welding shall not be carried out on the parts of the decoration and decoration with fuelable materials, closed and pressurized vessel pipelines, and shall not be welded at the nearby open flame operation.

Summary. Dear, I am glad to answer for you: submerged arc welding wire welding parameters A:

Parameters: Submerged arc welding is basically about 10 of the thickness of the current plate, the voltage is adjusted according to the width of the weld according to the need, and the speed is related to the molding. 4mm plate thickness double-sided suspension welding does not leave gaps, front current 120 to 150, voltage 24-28, reverse side 150-180, voltage 26-30.

The welding speed comes according to molding. If it is single-sided welding and double-sided molding, it is recommended to have a gap, add a ceramic liner on the back, do not open the groove, the current is 380-400, and the voltage is 28 to 30.

Dear, I am glad to answer for you: submerged arc welding wire welding parameters A: parameters:

Submerged arc welding is basically about 10 current plate thickness, the voltage is adjusted according to the width of the weld according to the need, and the speed is related to the molding, and the gear is slowly adjusted. 4mm thickness double-sided suspension welding does not leave gaps, the front current is 120 to 150, the voltage is 24-28, the reverse side is 150-180, the voltage is 26-30. The welding speed comes according to molding.

If it is a single-sided welding double-core face molding, it is recommended to add a gap, add a ceramic liner on the back, do not open the groove, the current is 380-400, and the voltage is 28 to 30.

The welding wire, the 12 thick plate, the current, voltage, and speed are what.

The submerged arc welding wire is 320 360A, the voltage is 25 27V, and the speed is 500 650mm min.

Welding wire, biban 16, base plate 12 with how much current, voltage, and speed.

Current 500 600A, voltage 32 38V, speed 35 50cm min.

What is the current, voltage, and driving speed of the welding wire, 16mm biplate, and 12mm base plate, and the welding flat fillet weld.

About 140-150 amps, the welding rod angle is about 70 degrees, and the welding is a little slower.

1) High deposition speed, high welding speed and high production efficiency;

2) Welding, the performance of the weld metal is easy to be adjusted by the selection of flux and welding wire, the surface of the weld is smooth and clean, and there is no need to grind the surface of the weld after welding;

3) It is easy to realize mechanized automation, 4) There is no radiation and noise, and it is a safe and green welding method;

5) Limited by the welding position, it is often used for the welding of flat welding and flat fillet welding position, and is not suitable for welding small and thin parts;

6) It is inconvenient to observe, and an automatic welding seam tracking device is required, which requires high assembly accuracy, and the welding slag must be removed after each layer of weld bead welding;

7) The one-time investment of the equipment is large, and auxiliary devices need to be used.

Hello 1Welding current, when other parameters are constant, by measuring the shape and size of the weld to determine the value of the welding current.

Arc voltage, by measuring the welding width, penetration depth and weld residual height, using a formula, the increase in arc voltage.

Welding speed, when other welding parameters are constant, the welding heat input is measured and the penetration depth of the weld is observed, so that the welding speed is determined.

The inclination angle of the welding wire, the inclination direction of the welding wire is divided into forward tilt and backward tilt. Judge the force and heat effect of the arc on the weld pool, observe the state of weld forming, and determine the direction and magnitude of the inclination angle.

1.Factors that affect the shape and performance of welds.

Submerged arc welding is mainly suitable for flat welding position welding, and if certain tooling and auxiliary tools are used, fillet welding and horizontal welding position can also be realized. The factors that affect the shape and performance of the weld during submerged arc welding are mainly welding process parameters and process conditions. Below we will mainly discuss the situation of the flat weld position.

Effect of welding process parameters.

The welding process parameters that affect the shape and size of the submerged arc weld include welding current, arc voltage, welding speed and wire diameter.

1) Welding current When other conditions remain unchanged, the influence of increasing welding current on the penetration depth of the collapsed weld (as shown in Figure 1), whether it is a Y-shaped groove or an I-shaped groove, under normal welding conditions, the penetration depth is proportional to the change of welding current, that is, the influence of the shape, as shown in Figure 2. The current is small, the penetration depth is shallow, and the residual height and width are insufficient; The current is too large, the penetration depth is large, and the residual height is too large, which is easy to produce high-temperature cracks.

Fig.1. Relationship between welding current and penetration depth (

Fig.2. The influence of welding current on the shape of the weld section.

a) I-joints b) Y-joints.

2) Arc voltage The arc voltage is proportional to the arc length, and the arc length is different if the flux is different and the arc space electric field strength is different when the arc voltage and welding current are the same. If all other conditions are constant, the effect of changing the arc voltage on the shape of the weld is shown in Figure 3. The arc voltage is low, the penetration depth is large, the weld width is narrow, and it is easy to produce hot cracks

When the arc voltage is high, the width of the weld increases, and the residual height is not enough. In submerged arc welding, the arc voltage is adjusted according to the welding current, that is, a certain welding current must maintain a certain arc length to be guaranteed.

The welding arc burns steadily, so the range of arc voltage variation is limited.

Fig.3. Effect of arc voltage on the shape of weld cross-section.

a) I-joints b) Y-joints.

3) Welding speed Welding speed has an impact on the penetration depth and penetration width, usually the welding speed is small, the welding melt pool is large, the weld penetration depth and penetration width are larger, with the increase of welding speed, the penetration depth and penetration of the welding training shirt will decrease, that is, the penetration depth and penetration width are inversely proportional to the welding speed, as shown in Figure 4. The effect of welding speed on the shape of the weld section is shown in Figure 5. The welding speed is too small, the amount of molten metal is large, and the weld forming is poor

When the welding speed is large, the amount of molten metal is insufficient, and undercuts are easy to occur. In order to improve productivity during actual welding, it is necessary to increase the arc power before increasing the welding speed to ensure the quality of the weld.