Stainless steel welding electrode E309Mo-16
Introduction
a.Compared with E309-16,Stainless Steel Welding Electrode E309Mo-16 contains 2-3%Mo element,so it has very good heat-resistance and shows better properties in toughness,crack-resistance, creep-resistance and corrosion - resistance.
b.DC is applied and the electrode should be contacted reversed polarity.Stainless Steel Welding Electrode E309Mo-16 is used for all position welding with excellent performance:stable arc,small spatters,good appearance of weld.And also the welding electrode shows good heat-resistance character,not easy to turn red.
Application
Used for welding the same type of stainless steel vessels resistant to corrosion by sulfuric acid medium (ammonium sulfate), and can also be used for stainless steel lining, in line with the welding of steel plates and dissimilar steels,A1S1 316/316L,317 stainless steel and carbon,steel,A1S1 316 cover-layer steels.
Chemical composition of deposited metal
| C | Mn | Si | Cr | Ni | Mo | Cu | S | P |
| ≤0.12 | 05-2.5 | ≤0.90 | 22-25 | 46005 | 2.0-3.0 | ≤0.75 | ≤0.03 | ≤0.04 |
Referance Current Stainless Steel Welding Electrode E309Mo-16
| Diameter(mm) | 2 | 2.5 | 3.2 | 4 | 5 |
| Current(A) | 25-50 | 50-80 | 80-110 | 110-160 | 160-200 |
Core performance advantages
1. Efficient deposition, saving time and materials
Compared with ordinary welding rods, E7014 can deposit more metal in the same time, reducing the frequency of electrode replacement. In large-scale welding projects, it can significantly shorten the construction period, reduce labor and material costs, and improve overall construction efficiency.
2. Stable arc and user-friendly operation
The arc burns stably during welding, and it is not easy to break or drift. Novices can also get started quickly. The right amount of slag effectively protects the molten pool, isolates the air to prevent the weld from oxidizing, and is easy to remove. It is easy to clean after welding and the weld is beautiful.
3. Strong power adaptability
Whether it is AC or DC welding power supply, E7014 welding rod can work stably, without the need to change welding rods due to power supply type, adapting to the equipment conditions of different construction sites, and flexible and convenient to use.
Application scenarios
- Building steel structure field: commonly used for steel structure welding of high-rise office buildings, commercial complexes and industrial plants. Its 110% high deposition efficiency can quickly complete the welding of steel beams, steel columns and trusses, which not only ensures the strength of the weld, but also improves the construction efficiency. It can be used in both AC and DC, and is suitable for different power supply environments.
- Bridge engineering field: suitable for welding bridge main beams and bridge pier connectors. The all-position welding characteristics make it perform well in on-site assembly and prefabricated component welding. The stable arc and moderate slag fluidity can ensure the firmness of the weld and enhance the bridge's ability to resist loads and natural erosion.
- Vehicle manufacturing field: It is the preferred choice for welding trucks, engineering machinery frames and body frames. Its deposited metal has good strength and toughness, can withstand the complex stress of the vehicle, and has small welding spatter and high deposition efficiency, reduces the grinding process, meets the needs of large-scale production, and effectively reduces costs.
- Machinery manufacturing field: widely used for welding of mechanical equipment frames and brackets. When welding the base and transmission parts of heavy equipment, it can ensure the stability of the joints and ensure the operation of the equipment. For parts that need frequent maintenance, its good operability facilitates repair and shortens downtime for maintenance.
- Steel structure maintenance and renovation field: It is indispensable in the repair or renovation of damaged steel structure buildings and bridges. It can flexibly cope with welding of various shapes and positions. Even if the construction conditions are limited, it can also rely on stable performance to ensure welding quality, restore the function of old steel structures, and save reconstruction expenses.
How to use
- Welding rod angle: Adjust the welding rod angle according to the welding position. In flat welding, the angle between the welding rod and the welding direction is maintained at 60° - 80°; in vertical welding, the angle between the welding rod and the surface of the weldment is about 90°, and an appropriate swing method (such as sawtooth or crescent swing) is used to control the molten pool; in horizontal welding and overhead welding, reduce the angle between the welding rod and the weldment to prevent the molten iron from falling and ensure the formation of the weld.
- Arc length: Maintain short arc welding, and try to control the arc length to be close to the diameter of the welding rod to enhance the arc stability, reduce the intrusion of air into the molten pool, and improve the weld's anti-porosity and anti-oxidation ability.
- All-position welding: The welding rod supports all-position welding such as flat welding, vertical welding, horizontal welding, and overhead welding. In difficult positions such as overhead welding, a smaller welding current and a faster welding speed are required, combined with short arc operation to ensure good fusion between the weld and the parent material.
Precautions
- Environmental requirements: Welding should be carried out in a dry and well-ventilated environment, and avoid working in rainy and humid environments. When the relative humidity exceeds 80%, it is easy to cause pores in the weld, and dehumidification measures need to be taken. At the same time, stay away from flammable and explosive items to prevent welding sparks from causing danger.
- Operation specifications: It is forbidden to use damp, peeling or cracked welding rods to avoid affecting the welding quality. When replacing welding rods, make sure that the welding current is turned off to prevent electric shock. During welding, avoid long-term short circuit between welding rods and welds to avoid damaging welding equipment.
- Personnel safety: During welding operations, professional welding protective masks, gloves, and work clothes must be worn to prevent arc burns to the eyes and skin. Pay attention to rest during long-term work to avoid operating errors due to fatigue. In addition, warning signs should be set up in the welding area to prevent unrelated personnel from approaching.
- Equipment maintenance: Regularly check the line connection and insulation of the welding power supply to ensure safe operation of the equipment. After welding, turn off the power supply in time, clean the dust and splashes on the surface of the equipment, and extend the service life of the equipment.
- Handling of special situations: If abnormal phenomena occur during welding, such as unstable arc, poor weld formation, etc., welding should be stopped immediately, and welding parameters, electrode quality and parent material status should be checked. The operation can be continued after the fault is eliminated.
FAQ
Q: Can this electrode only be welded with a DC power supply?
A: Yes, and DC reverse connection (the electrode is connected to the positive pole and the workpiece is connected to the negative pole) must be used to ensure arc stability, obtain good penetration, and ensure welding quality.
Q: What are the safety precautions for welding?
A: Be sure to wear a protective mask, gloves and work clothes; the working environment must be dry and ventilated, away from flammable and explosive materials; turn off the power when replacing welding rods to avoid electric shock; take a break during long-term work to prevent fatigue.
Q: How should welding rods be stored?
A: Store in a dry and ventilated environment to avoid moisture. The remaining welding rods must be sealed and re-baked before the next use.
Hot Tags: Stainless Steel Welding Wire, China, manufacturers, suppliers, factory, company, wholesale, discount, buy, low price, high quality, products