If you are washing laundry that contains metal items, this can cause a scraping noise. Metallic objects such as buckles, zippers, buttons, clasps and clips can all rub against the drum of the washer during the cycle. This is often the cause of a scraping noise during a wash cycle.
As you use your washer, it is possible for various pieces of debris to come from your laundry. This can include things such as paper clips, zippers and coins. When the washer is spinning, those pieces of debris can get lodged in the holes of the washer drum. In this instance, the scraping noise is a result of the metal debris rubbing between the tub and the drum.
As the motor in the washer gears up and down for the changes in the cycle, it creates different noises. The spin cycle produces the loudest noise, due to the motor speeding up quickly. This noise may sound like a scraping. If the noise you hear during the cycle is unlike what you normally hear, it may signal a problem with an internal component. As a result, you may need to consult an appliance repair professional.
If the washer is not sitting level, it may produce a scraping noise. Normally, a washer that is not level rocks and vibrates. However, if the washer is sitting on a floor surface that favors it, a scraping noise may be produced as the washer vibrates out of place. This can be remedied by adjusting the legs with a wrench so that the washer is level.