Grate Bars Research Articles

Increasing the life of sintering machine grate bars

Increasing the life of sintering machine grate bars

ACI TYPE HH

Abstract Type HH is an iron-chromium-nickel casting alloy having high heat, oxidation and corrosion resistance. It is recommended for furnace parts, salt pots, grate bars, belt conveyors and other parts operating up to 21008 F in intermittent service. It may be supplied in partially ferritic Type I or in wholly austenitic Type II depending on the applications and service requirements. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-221. Producer or source: Stainless steel mills.

Selectivities of human visual mechanisms for direction of movement and contour orientation.

The luminance threshold for horizontal contours which move upward is raised by prior exposure of any of wide range of different directions of movement. The threshold for a stationary grating of horizontal bars is raised only by prior exposure of similarly oriented bars. It is also found that sensitivity to changes in orientation of a stationary grating is greater than sensitivity to changes in the direction in which a grating moves. It is proposed that the interactions between pre-exposed adapting stimuli and the stimuli for which thresholds are determined reflect the orientation and direction selectivities of the underlying mechanisms.

THE ISOMETRIC BAR GRATING AS A SPECTRUM INTENSITY DISCRIMINATOR.

With modern etching methods, self-supporting thin isometric bar gratings were manufactured while maintaining a great accuracy of their bar to spacing periodicity throughout their entire aperture. Relative spectrum intensities are determined in the image space by the position of the highest order of diffraction that remains observable. The influence of location and orientation of an isometric grating in a spectrograph and changes of the height of its entrance slit upon the image of the intensity spectrum is debated.

Cast Irons in High Temperature Service

Abstract Cast irons in grate bars and furnace doors traditionally have been compared principally on their comparative growth properties. Recently, in an attempt to accumulate experimental data whic...

Description of J. C. Schlough's patent self-retaining grate bars

Description of J. C. Schlough's patent self-retaining grate bars

Description of J. C. Schloulh's patent self-retaining grate bars

Description of J. C. Schloulh's patent self-retaining grate bars