C21D 7 - Modifying the physical properties of iron or steel by deformation

Patents for C21D 7 - Modifying the physical properties of iron or steel by deformation (3,811)
12/1976
12/21/1976	US3998665 Heating-cooling cycles
12/14/1976	US3997370 Method of hot reducing ferrous and ferrous alloy products with composite martensitic nodular cast chill iron rolls
10/1976
10/19/1976	US3986654 Method for making tubular members and product thereof
10/05/1976	US3983736 Helically wound mandrel assembly
09/1976
09/21/1976	US3981752 Method for controlling the temperature of steel during hot-rolling on a continuous hot-rolling mill
09/14/1976	US3980506 Process for manufacturing highly wear-resistant, undistorted, axially symmetrical parts
07/1976
07/06/1976	US3967486 Toughening roll die work method for metallic material
05/1976
05/25/1976	US3958439 Method for recovering ductility of a cold rolled metal strip
04/1976
04/13/1976	US3950642 Method of inspecting shot peened surfaces for extent of coverage
03/1976
03/30/1976	US3946583 Method and apparatus for improving fatigue strength in weld zones
02/1976
02/10/1976	US3937055 Method of peening and portable peening gun