Research/Patents/US 4774392
US 4774392

LASER CUTTING METHOD FOR HIGH CHROMIUM STEEL AND A DEVICE TO CARRY OUT THAT METHOD

Assignee

AMADA ENGINEERING & SERVICE CO., INC.

Filed

Apr 16, 1985

Granted

Sep 27, 1988

Location

LA HABRA CA US

Abstract

The present invention relates to a method and device for cutting a workpiece made from a high chromium material such as stainless steel. The device comprises a processing head to irradiate and focus a laser beam onto a workpiece, a nozzle connected to the processing head for spraying and assisting gas onto the workpiece, a storage tank for storing a carbonate, and an orifice device for drawing carbonate from the storage tank so that it may be fed into the nozzle and sprayed onto the workpiece with the assisting gas. The addition of carbonate to the assist gas prevents excess dross from adhering to the cut surface of the workpiece.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 10, 1985

Rescinded

Mar 5, 1987

Duration

1 year, 5 months

Inventor

  • 1NAOKI ORITA

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records