PERFORATED VIBRATING SCREENS STANDARDS
vibrating screens
In specifying Perforated Screen Plate for vibrating screens,
the following shall be given:
1 QUANTITY -State the number of Perforated Screen Plate of the same thickness, width, length, perforation and bars.
2 THICKNESS -Specify in inches or gage number. Steel -Use the U.S. Std. Ga. Table. Stainless Steel- Use the U.S. Std. Ga. Table. Monel -Use the U.S. Std. Ga. Table. Brass, Copper, Muntz Metal & Aluminum -Use B&S Ga. Table.
3 METAL -State the kind of metal required. Steel plate: a minimum of .20 C and a minimum of .40 Mn shall be used. Abrasion resisting (AR) steel plate; a min. of .35 C and a min. of 1.20 Mn.
4 WIDTH -The "width" is the dimension at right angles to the flow of the material. Specify the overall width. If hook flanges are required, specify: "width (measured outside the hook flanges)." Tolerance of the width: plus 0" minus 1/4".
5 LENGTH -The "length" is the dimension of the Perforated Screen Plate that is parallel to the flow of material being screened. Specify the overall length. Tolerance of the screen length: plus 0" minus 1/4".
6 PERFORATION SIZE & SHAPE -Click here for perforations that are available.
7 ARRANGEMENTS OF PERFORATIONS -Staggered arrangement (600 pattern) is the standard. Perforations are normally staggered in the direction of the flow of the material being screened.
8 BARS -The "bar" is the metal between perforations and is measured at the point where perforations are closest. Specify the width of the bar.
9 METHOD OF ATTACHING PERFORATED SCREEN PLATE TO VIBRATING SCREENS Hook Flanges -For standard "tension-type" vibrating screens, specify "Hook Flanges"(Click Here). Bolted to Frame of Vibrating Screen -If the Perforated Screen Plate is to be bolted, submit sketch showing location, size and type of the bolt holes. Also specify the width of blank margins on the sides and the ends of the Perforated Screen Plate.
10 CROWNED SCREENS -If a screen plate is to be "crowned", state the amount of the crown measured at the centerline. Unless otherwise specified, the standard crown for screens 1/16" thick and heavier will be furnished as follows: For 3' or 4' wide vibrating screens -1/2" crown. For 5' wide vibrating screens -3/4" crown. For 6' wide vibrating screens and wider -1" crown.
11 OTHER INFORMATION -(a) For slotted perforations -specify whether the long dimension of the slot is parallel with the width or length of the Perforated Screen Plate. (b) If the screen is to be "corrugated" to distribute or retard the flow of material, so specify. (c) For screens requiring "skid bars" to scalp off oversize material, specify bar size and location. Include make, model and size of vibrator.
12 CLAMP BARS -(SKIRT BOARDS) Can be supplied as a standard item or custom to your requirements with or without round or square holes.
