Depending on distortion, some forks can be straightened. The fork manufacturer is best qualified to correct this. Your local forklift supplier can make the arrangements. Check for cracks in heel and hanger. Cracks may appear on forks where attachments are welded on or in the inside radius of the bend area.
Periodic inspection using a magnetic particle or dye penetrant test can detect cracks.
Approved grinding methods may grind out and polish these blemishes, depending on the depth of the crack. Contact your forklift supplier or the manufacturer for additional information. Replace, when necessary, with good quality forks. When ordering or reordering forks, make sure you are getting high quality forks that will do your lifting jobs safely. Insist on forged forks or ones with an upset heel.