What's Available Sheet and plate are available from producers in severalforms. Common ?at sheet widths are 24 in., 30 in., 36 in., 48 in., and 60 in.[600 mm, 750 mm, 900 mm, 1,200 mm, and 1,500 mm]; common lengthsare 96 in., 120 in., and 144 in. [2,400 mm, 3,000 mm, and 3,600 mm]. Sheetis also sold rolled in coils (Figure 3.13) available in various alloys and thicknessesin widths of 30 in., 36 in., 48 in., 60 in., 72 in., 96 in., 102, and 108in. [750 mm, 900 mm, 1200 mm, 1500 mm, 1800 mm, 2400 mm, 2600 mm,and 2700 mm], as well as others. The advantage of coils is that piece lengthsare limited only by fabrication processes, such as brake press die lengths,rather than by the material stock size.
Common thicknesses are given in Tables 3.6 and 3.7. Thickness is alsoidentied in terms of gauge number. Aluminum sheet gauge thicknesses ardifferent from steel. For example, 16gauge aluminum sheet is 0.0508 in. [1.29mm] thick, while 16 gauge steel is 0.0625 in. [1.59 mm] thick. The AluminumDesign Manual, Part VI, Section Properties, Table 33, gives aluminum (in therst column) and steel gauge thicknesses. It is preferable when ordering sheetto identify thickness in inches rather than by gauge.
Pre-painted sheet is available from producers; Section 3.2 contains moreinformation.Tolerances Tolerances on thickness, width, length, lateral bow, squareness,and atness for sheet and plate are given in Aluminum Standards and Data,Tables 7.7 through 7.18. Tolerances are larger for thicker and wider product.converted). Alclad alloys (see Section 3.2) have the same thickness tolerancesas non-alclad alloys. It's customary in the tank and pressure vessel industryto limit the under run tolerance to 0.01 in. [0.25 mm], which is more stringentthan standard aluminum mill tolerance for many commonly supplied widthsand thicknesses. Rolling mills can generally meet the tighter tolerance if theyare made aware of it beforehand.
Fabrication Sheet and plate may be sheared, sawed, router-cut, nibbled bypunching, plasma-arc-or laser-cut, or cut with an abrasive water jet. Shearingis generally limited to thicknesses less than in. [12 mm]. Coiled sheet mayalso be slit. Oxygen-cutting is not permitted because the heat is too great,causing melting or weakening of the aluminum.
What's Available Sheet and plate are available from producers in severalforms. Common ?at sheet widths are 24 in., 30 in., 36 in., 48 in., and 60 in.[600 mm, 750 mm, 900 mm, 1,200 mm, and 1,500 mm]; common lengthsare 96 in., 120 in., and 144 in. [2,400 mm, 3,000 mm, and 3,600 mm]. Sheetis also sold rolled in coils (Figure 3.13) available in various alloys and thicknessesin widths of 30 in., 36 in., 48 in., 60 in., 72 in., 96 in., 102, and 108in. [750 mm, 900 mm, 1200 mm, 1500 mm, 1800 mm, 2400 mm, 2600 mm,and 2700 mm], as well as others. The advantage of coils is that piece lengthsare limited only by fabrication processes, such as brake press die lengths,rather than by the material stock size.
Common thicknesses are given in Tables 3.6 and 3.7. Thickness is alsoidentied in terms of gauge number. Aluminum sheet gauge thicknesses ardifferent from steel. For example, 16gauge aluminum sheet is 0.0508 in. [1.29mm] thick, while 16 gauge steel is 0.0625 in. [1.59 mm] thick. The AluminumDesign Manual, Part VI, Section Properties, Table 33, gives aluminum (in therst column) and steel gauge thicknesses. It is preferable when ordering sheetto identify thickness in inches rather than by gauge.
Pre-painted sheet is available from producers; Section 3.2 contains moreinformation.Tolerances Tolerances on thickness, width, length, lateral bow, squareness,and atness for sheet and plate are given in Aluminum Standards and Data,Tables 7.7 through 7.18. Tolerances are larger for thicker and wider product.converted). Alclad alloys (see Section 3.2) have the same thickness tolerancesas non-alclad alloys. It's customary in the tank and pressure vessel industryto limit the under run tolerance to 0.01 in. [0.25 mm], which is more stringentthan standard aluminum mill tolerance for many commonly supplied widthsand thicknesses. Rolling mills can generally meet the tighter tolerance if theyare made aware of it beforehand.
Fabrication Sheet and plate may be sheared, sawed, router-cut, nibbled bypunching, plasma-arc-or laser-cut, or cut with an abrasive water jet. Shearingis generally limited to thicknesses less than in. [12 mm]. Coiled sheet mayalso be slit. Oxygen-cutting is not permitted because the heat is too great,causing melting or weakening of the aluminum.
access point vs router
Niciun comentariu:
Trimiteți un comentariu