Table 6-5. Excessive Penetration

 

Excessive Penetration − weld metal melt-

 

ing through base metal and hanging un-

 

derneath weld.

Excessive Penetration

Good Penetration

Possible Causes

Corrective Actions

Excessive heat input.

Select lower amperage. Use smaller electrode.

 

Increase and/or maintain steady travel speed.

 

Table 6-6. Burn-Through

 

Burn-Through − weld metal melting com-

 

pletely through base metal resulting in

 

holes where no metal remains.

Possible Causes

Corrective Actions

 

 

 

 

Excessive heat input.

Select lower amperage. Use smaller electrode with lower amperage.

 

Increase and/or maintain steady travel speed.

 

 

Table 6-7. Waviness Of Bead

Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal.

Possible Causes

Corrective Actions

 

 

 

 

Unsteady hand.

Use two hands. Practice technique.

 

 

Table 6-8. Distortion

Distortion − contraction of weld metal dur- ing welding that forces base metal to move.

 

 

 

Base metal moves

 

 

 

in the direction of

 

 

 

 

 

 

the weld bead.

 

 

 

 

Possible Causes

 

 

Corrective Actions

 

 

 

 

Excessive heat input.

Use restraint (clamp) to hold base metal in position.

 

Make tack welds along joint before starting welding operation.

 

Select lower amperage for electrode.

 

Increase travel speed.

 

Weld in small segments and allow cooling between welds.

 

 

 

 

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Hobart Welding Products OM-950 manual Excessive Penetration, Burn-Through, Waviness Of Bead, Distortion
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OM-950 specifications

Hobart Welding Products has been a respected name in the welding industry, providing high-quality equipment and solutions for a wide range of welding applications. One of their notable offerings is the Hobart OM-950, a powerful and versatile MIG welder designed to meet the needs of both professionals and hobbyists alike.

The Hobart OM-950 is engineered for optimal performance and user-friendly operation. This machine stands out due to its robust construction, capable of withstanding the rigors of industrial environments while remaining portable enough for at-home use. With a maximum output of 950 amps, it is well-suited for various welding jobs, from thin sheets of metal to heavier gauge materials.

One of the main features of the OM-950 is its advanced inverter technology which allows for a lightweight and compact design without sacrificing power. This technology not only enhances portability but also improves energy efficiency, resulting in lower operational costs. The machine is designed to operate on both 230V and 460V input power, making it versatile for different work settings.

Another key characteristic of the OM-950 is its impressive duty cycle. With a 60% duty cycle at 950 amps, users can engage in extended welding operations without the risk of overheating. This is particularly advantageous during long projects where consistent performance is crucial.

The OM-950 also includes a user-adjustable output range, allowing for precise control over the welding process, which is essential for achieving clean and professional results. The welder incorporates a digital display that provides real-time feedback on settings and performance, ensuring that operators can easily make necessary adjustments on the fly.

Additionally, the Hobart OM-950 features a spool gun capable of handling aluminum and other non-ferrous materials, which expands its usability across various welding applications. The machine's built-in safety features, such as thermal overload protection, further enhance its reliability and ease of use.

With its combination of power, versatility, and user-friendly features, the Hobart Welding Products OM-950 is an excellent choice for those looking for a high-performance MIG welder that can tackle diverse welding tasks efficiently and effectively. Whether for professional use or home projects, this machine delivers on quality and innovation, making it a preferred choice among welders.
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