1、Designation: F 1348/F 1348M 91 (Reapproved 2007)An American National StandardStandard Specification forPneumatic Rotary Descaling Machines1This standard is issued under the fixed designation F 1348/F 1348M; the number immediately following the designation indicates theyear of original adoption or, i
2、n the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers requirements for pneumaticrotary descaling machines for
3、 removal of paint, rust, scale,nonskid deck covering, and other coatings from steel andaluminum structures. These portable machines are intended foruse in a marine environment, subject to salt air and sprayduring use and high humidity during storage.1.2 The values stated in either inch-pound units o
4、r SI unitsare to be regarded separately as standard. The values stated ineach system are not exact equivalents; therefore, each systemshall be used independently of the other. Combining valuesfrom the two systems may result in nonconformance with thespecification.1.3 The following precautionary stat
5、ement pertains to thetest method portion only, Section 12, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determin
6、e the applicability of regulatory limita-tions prior to use. Specific precautionary statements are givenin 17.2.1.2. Referenced Documents2.1 ASTM Standards:2B 209 Specification for Aluminum and Aluminum-AlloySheet and PlateD 4417 Test Methods for Field Measurement of SurfaceProfile of Blast Cleaned
7、SteelF 1166 Practice for Human Engineering Design for MarineSystems, Equipment, and Facilities2.2 Federal Specifications:3Fed. Std. No. 123 Marking for Shipment (Civil Agencies)PPP-B-566 Boxes, Folding, PaperboardPPP-B-601 Boxes, Wood, Cleated-PlywoodPPP-B-621 Boxes, Wood, Nailed and Lock-CornerPPP-
8、B-636 Boxes, Shipping, FiberboardPPP-B-640 Boxes, Fiberboard, Corrugated, Triple WallPPP-B-676 Boxes, Setup2.3 Military Specifications:4MIL-STD-129 Marking for Shipment and StorageMIL-STD-147 Palletized Unit LoadsMIL-B-117 Bags, Sleeves and TubingMIL-H-775 Hose, HoseAssemblies; Rubber, Plastic, Fabr
9、icor Metal (Including Tubing); and Associated Hardware:Packaging ofMIL-L-17331 Lubricating Oil, Steam Turbine, Noncorro-siveDOD-G-24508 Grease, High Performance, Ball RollerBearing, Continuous Run to 300F2.4 ABS Publication:ABS Rules for Building and Classing Steel Vessels53. Classification3.1 Desca
10、ling machines are available in two types and twoclasses, as follows:3.1.1 Type 1, Hand-Held:3.1.1.1 Class AInch-pound design, and3.1.1.2 Class BSI metric design.3.1.2 Type 2, Deck-Supported:3.1.2.1 Class AInch-pound design, and3.1.2.2 Class BSI metric design.3.2 Hubs for use with descaling machines
11、are available infour classes, as follows:3.2.1 Class ANonmetallic, nonwoven, noncontaminating,3.2.2 Class BPeening hub for aluminum surfaces,3.2.3 Class CMetallic hammer type for steel surfaces, and3.2.4 Class DMetallic cutter type for steel surfaces.4. Ordering Information4.1 Orders for material un
12、der this specification shall includethe following:1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.07 onGeneral Requirements.Current edition approved Dec. 1, 2007. Published January 2008. Originally
13、approved in 1991. Last previous edition approved in 2002 as F1348/F1348M 91(2002).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary pag
14、e onthe ASTM website.3Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA
15、19111-5098, http:/www.dodssp.daps.mil.5Available from American Bureau of Shipping (ABS), ABS Plaza, 16855Northchase Dr., Houston, TX 77060, http:/www.eagle.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.1 Title, number, and
16、date of this specification,4.1.2 Quantity,4.1.3 Type and class required (see Section 3),4.1.4 Test and inspection certification requirements, if ap-plicable (see Section 15),4.1.5 Test report requirements (see Section 15),4.1.6 Technical manual requirements (see Section 16),4.1.7 Special marking req
17、uired (see 18.3),4.1.8 Level of preservation, packaging, packing, and mark-ing required (see Section 17 and Supplementary Require-ments), and4.1.9 Lubrication requirements of Supplementary Require-ments, if applicable (see Section S3).5. Materials and Manufacture5.1 Asbestos and Cadmium:5.1.1 Materi
18、al used in the machines, or in any components,accessories, repair parts, tools, and packing and packagingshall be free of asbestos and cadmium.5.2 Metal PartsMetal parts shall be corrosion resistant ortreated to resist corrosion.6. Mechanical Properties6.1 The machines shall be powered by an air mot
19、or andshall accept each of the rotary hubs (see 6.9).6.1.1 Type 1The Type 1 machine shall be a hand-held unithaving a minimum of two handles, one of which shall housethe trigger mechanism. The trigger mechanism shall be of thespring-loaded “dead man” type and shall immediately shut offair flow to th
20、e motor when released. The arrangement of thehandles and trigger mechanism shall permit right- or left-handed operation with equal ease. The direction of rotation ofthe hubs shall tend to propel the machine in the forwarddirection, away from the operator. The Type 1 machine shallremove coatings to w
21、ithin14 in. 6 mm of bulkheads,coamings, decks, and other immovable objects.6.1.2 Type 2The Type 2 machine shall be a deck sup-ported unit with a T-shaped operating handle. The operatinghandle shall be adjustable for height, rigid and strong enoughto operate the machine without bending, and long enou
22、gh toallow any operator with the percentile body dimensions speci-fied herein (see 6.2) to operate the machine while walkingbehind it in a natural walking position. The air hose connectionand trigger mechanism shall be located on the T-handle. Thetrigger mechanism shall be of the spring-loaded “dead
23、 man”type and shall immediately shut off air flow to the motor whenreleased. The handle shall detach or be adjustable to andlockable in the vertical position for storage. The machine shallbe provided with at least two wheels used to move themachine. With the handle, air hose and each of the abrasive
24、hubs attached, the machine shall sit level on the deck with theabrasive hubs in contact with the deck and not interfere withdeck coating removal process. The machine shall easily propelitself or be propelled by the operator across the deck withoutoverstressing the operator (see 6.2). The Type 2 mach
25、ine shallremove deck coating to within 112 in. 40 mm of thebulkheads, coamings, and other immovable objects.6.2 Human EngineeringThe machines shall be in accor-dance with the human engineering criteria of Practice F 1166except where such requirements conflict with the requirementsof this specificati
26、on. The machines shall incorporate themaintainability requirements of Practice F 1166 and shallpermit safe and efficient performance of operation and main-tenance by the fifth percentile female to the ninety-fifthpercentile male, as defined in Practice F 1166. Clearance shallbe provided around each
27、component, part or control so that anindividual with aforementioned percentile body dimensionsand physical capabilities can safely operate, maintain, remove,or replace any item using normally available tools and testequipment. The controls required for operation and mainte-nance shall be in accordan
28、ce with Practice F 1166 and shall notrequire operator forces to exceed the strength limitations listedtherein.6.3 InterchangeabilityComponent parts and assembliespeculiar to each type and class of machine from any onemanufacturer shall be fully interchangeable. Such interchange-ability shall not req
29、uire any alterations or modifications.6.4 Dimensions and WeightThe machines, fully as-sembled with guards; debris collector attachment (less hosesand collection container); and with operating handles (Type 2)locked in its operating position; fully lubricated and ready in allaspects for operation (le
30、ss air hose and filter, evaporator andlubricator attachments) shall not exceed the maximum dimen-sions and weight shown in Table 1.6.5 Air MotorThe machines shall be driven by air motorsthat operate on the minimum air supplies as shown in Table 2.6.6 GuardsMachines of both Type 1 and Type 2 shall be
31、provided with guards that protect the operator from inadvertentcontact with moving parts and prevent uncontrolled scatteringof chips or scale removed by the machine. These guards shallnot interfere with the performance of the machine throughoutthe machines useful life, unduly decrease any of the hub
32、sphysical dimensions or wear, or interfere with changing of thehubs. The guards/rotary hub containment shall be constructedto accommodate a debris collection system.6.7 Air ConnectionsAir connections for both Type 1 andType 2 machines shall be of the quick disconnect type. Thelocations of the air co
33、nnection shall be such that the hose doesnot interfere with operation of the machine or the operator. Theinside diameter of the connections shall be in accordance withTable 3.6.8 LubricationLubrication fittings shall be installed sothat lubrication can be accomplished without disassembly ofthe machi
34、ne (see 6.2). Lubrication materials shall be high-temperature lubricating oil or high-performance grease.6.9 Hubs:6.9.1 Hubs for each type and class of machine shall clean apath of width not less than that shown in Table 4. Hubs for eachtype, class, and manufacture of machine shall be interchange-ab
35、le with hubs of any other machine of the same type, class,TABLE 1 Maximum Dimensions and WeightsType 1Class AType 1Class BType 2Class AType 2Class BLength 16 in. 410 mm 36 in. 915 mmWidth 6 in. 155 mm 16 in. 410 mmHeight 12 in. 306 mm 48 in. 1220 mmWeight 5lb 2.3kg 110lb 50kgF 1348/F 1348M 91 (2007)
36、2and manufacture, using only the normally available tools (see8.1.2) for the interchange.6.9.2 Hubs shall be of the following classes, classified byintended composition, function, and service life, as follows:6.9.2.1 Class A HubThe ClassAhub shall be nonmetallic,nonwoven, noncontaminating, and shall
37、 remove paint, rust, orscale. The Class A hub shall feather the edge of a paintedsurface in a smooth taper from the painted aluminum surface tobare metal, and shall not remove, erode, or groove metalsurfaces. The Class A hub shall have a minimum service life of8h.6.9.2.2 Class B HubThe Class B hub s
38、hall remove paint,rust, or scale and shall peen the aluminum surface to a profileof 1.0 to 3.0 mils 0.0025 to 0.0076 mm. The Class B hub shallhave a minimum service life of 50 h.6.9.2.3 Class C HubThe Class C hub shall be a metallichammer type assembly and shall remove paint and nonskidcovering on s
39、teel surfaces. The Class C hub shall operate overprotrusions or obstructions on the deck surface, such as bolts orpadeyes, up to a height of 1 in. 25 mm, without damage to thehub or machine. The Class C hub shall have a minimum servicelife of 100 h.6.9.2.4 Class D HubThe Class D hub shall be a metal
40、lictype cutter assembly that removes paint, rust, scale, andnonskid deck coverings on steel surfaces. The Class D hubshall have a minimum service life of 30 h.7. Performance Requirements7.1 Removal RateThe minimum removal rate when testedin accordance with Section 12 shall be as specified in Table 5
41、and Table 6.7.1.1 Type 1 MachineSee Table 5.7.1.2 Type 2 MachineSee Table 6.7.2 Stability:7.2.1 Type 1 MachineThe assembled Type 1 machineshall operate at any angle from the horizontal to vertical(including the overhead) without loss of power or descalingefficiency.7.2.2 Type 2 MachineThe assembled
42、Type 2 machineshall operate without loss of power and descaling efficiencyand without tipping when inclined at an angle of 15 from thehorizontal in any direction.8. Attachments8.1 The machine shall be furnished in kit form, with each kitcontaining the following items besides the basic machine:8.1.1
43、One Class A hub,8.1.2 One Class B hub,8.1.3 One Class C hub,8.1.4 One Class D hub,8.1.5 One air hose with fittings,8.1.6 One hub-changing tool (or tool set),8.1.7 One debris collector,8.1.8 One carrying case, and8.1.9 One in-line filter/evaporator/lubricator.8.1.10 Air HoseAir hoses shall be38 in. 1
44、0 mm for Type1 machine and34 in. 19 mm for Type 2 machine withquick-disconnect connections and an air shutoff valve that shallimmediately shut off the air when the hose is disconnected. Thehose for the Type 1 machine shall be 50 ft 15 m long and thehose for the Type 2 machine shall be 100 ft 30 m lo
45、ng.8.1.11 Hub Changing ToolA standard commerciallyavailable tool for changing hubs shall be provided. The toolsshall not be unique to a specific supplier.8.1.12 Carrying CaseThe carrying cases for Type 1 andType 2 machines shall be corrosion-resistant, fire-resistant,high-impact material, strong and
46、 rigid enough to transport themachine and its accessories. The carrying case shall rigidlyhold all accessories with the exception of hoses, withoutdeformation or breakage, and shall be less than 24 in. 610mm wide. The carrying case shall also hold the machineshandle when the handle is disconnected.8
47、.1.13 Debris CollectorBoth Type 1 and Type 2 machinesshall be capable of attaching a debris collecting device that willcollect a minimum of 95 % of the debris created.8.1.14 In-Line Filter/Evaporator/LubricatorA filter to re-move air system debris, an evaporator to remove moisture, anda lubricator t
48、o continually lubricate the machine or a combi-nation unit shall be installed to ensure satisfactory long-termTABLE 2 Air SuppliesType 1Class AType 1Class BType 2Class AType 2Class BAir pressureAir volume80 lb/in.218 ft3/min550 kPa0.51 m3/min80 lb/in.2125 ft3/min550 kPa3.54 m3/minTABLE 3 Air Connect
49、ionsType 1Class AType 1Class BType 2Class AType 2Class B14 in. 6.3 mm12 in. 12.7 mmTABLE 4 Minimum Path WidthHub for: Minimum Path WidthType 1 Class A machine 2 in.Type 1 Class B machine 50 mmType 2 Class A machine 5 in.Type 2 Class B machine 125 mmTABLE 5 Removal Rate; ft2/h (m2/h)HubClassPaint Rust/Scale NonskidClass AMachineClass BMachineClass AMachineClass BMachineClass AMachineClass BMachineA 50 4.5 25 2.3 . .B 65 6.0 35 3.3 . .C 85 8.0 . . 20 1.9D 85 8.0 25 2.3 25 2.3TABLE 6 Removal Rate; ft2/h (m2/h)HubClassPaint
