Shot Peening Equipment

February 13, 2013

Comco Inc. offers the latest advances in Shot peening technology with our new precision shot peening equipment for demanding production or job shop environments.

Shot peening is a cold working process that is used on metal parts to impart a compressive residual stress to increase fatigue life. Most cracks will not initiate or grow in a highly compressively stressed zone. This is especially useful for parts that are under constant stresses such as aerospace, automotive, medical implants and gears.

Eliminate or significantly reduce masking requirements for the shot peening process by blasting through small, accurate nozzles and precisely locating the nozzle with respect to the part. This ensures all of the media hits the part, that the media is not worn through inefficiency and reduces the systems air consumption.

Using a highly controlled delivery method for closed-loop peening with all shot materials with selection of pressure and flow, it allows complete optimization of intensity and coverage. Other features include; the ability to peen with two shot sizes simultaneously (Example: ID peen S70/OD peen S230), ID peening down to .125", storage of three different sizes of media ready for use, up to five parts can be peened simultaneously and the ability to peen with all media types (ferrous and non-ferrous).

Comco's shot reclamation systems include screen classification to remove oversized and undersized shot to maintain tight control over the sizing of the peening media. Spiral separators deliver only the spherical shot to the peening nozzles, ensuring a high degree of consistency in your shot peening process.

Related Glossary Terms

  • cold working

    cold working

    Deforming metal plastically under conditions of temperature and strain rate that induce strain hardening. Working below the recrystallization temperature, which is usually, but not necessarily, above room temperature.

  • fatigue

    fatigue

    Phenomenon leading to fracture under repeated or fluctuating stresses having a maximum value less than the tensile strength of the material. Fatigue fractures are progressive, beginning as minute cracks that grow under the action of the fluctuating stress.

  • fatigue life

    fatigue life

    Number of cycles of stress that can be sustained prior to failure under a stated test condition.

  • inner diameter ( ID)

    inner diameter ( ID)

    Dimension that defines the inside diameter of a cavity or hole. See OD, outer diameter.

  • peening

    peening

    Mechanical working of a metal by hammer blows or shot impingement.

  • residual stress

    residual stress

    Stress present in a body that is free of external forces or thermal gradients.

  • shot peening

    shot peening

    Cold working a metal’s surface by metal-shot impingement.

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