ASTM F1348 F1348M-1991(2002) Standard Specification for Pneumatic Rotary Descaling Machines.pdf

1、Designation: F 1348/F 1348M 91 (Reapproved 2002)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:B 209 Specification for Aluminum and Aluminum-AlloySheet and Plate2D 4417 Test Methods for Field Measurement of SurfaceProfile of Blast Cleaned

7、Steel3F 1166 Practice for Human Engineering Design for MarineSystems, Equipment, and Facilities42.2 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)52.3 Federal Specifications:PPP-B-566 Boxes, Folding, Paperboard5PPP-B-601 Boxes, Wood, Cleated-Plywood5PPP-B-621 Boxes, Wood, N

8、ailed and Lock-Corner5PPP-B-636 Boxes, Shipping, Fiberboard5PPP-B-640 Boxes, Fiberboard, Corrugated, Triple Wall5PPP-B-676 Boxes, Setup52.4 Military Standards:MIL-STD-129 Marking for Shipment and Storage6MIL-STD-147 Palletized Unit Loads62.5 Military Specifications:MIL-B-117 Bags, Sleeves and Tubing

9、6MIL-H-775 Hose, Hose Assemblies; Rubber, Plastic, Fabricor Metal (Including Tubing); and Associated Hardware:Packaging of6MIL-L-17331 Lubricating Oil, Steam Turbine, Noncorro-sive6DOD-G-24508 Grease, High Performance, Ball RollerBearing, Continuous Run to 300F62.6 ABS Publication:ABS Rules for Buil

10、ding and Classing Steel Vessels73. Classification3.1 Descaling 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 B

11、SI metric design.3.2 Hubs for use with descaling machines 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

12、surfaces.4. Ordering Information4.1 Orders for material under 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

13、 approved July 15, 1991. Published September 1991. Originallyapproved in 1991. Last previous edition approved in 1991 as F 1348/F 1348M 91(1997).2Annual Book of ASTM Standards, Vol 02.02.3Annual Book of ASTM Standards, Vol 06.02.4Annual Book of ASTM Standards, Vol 01.07.5Available from Standardizati

14、on Documents Order Desk, Bldg 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.6Available from American Bureau of Shipping, ABS Plaza, 16855 NorthchaseDr., Houston, TX 77060.7Available from Uniform Classification Committee Agent, Tariff PublicationOfficer, Room 1106, 222 S. Riv

15、erside Plaza, Chicago, IL 60606.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.1 Title, number, and 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

16、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 required (see 18.3),4.1.8 Level of preservation, packaging, packing, and mark-ing required (see Section 17 and Supplementary Requir

17、e-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 Material used in the machines, or in any components,accessories, repair parts, tools, and packing and packagingshall be free of asbest

18、os 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 motor 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

19、 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 the motor when released. The arrangement of thehandles and trigger mechanism shall permit right- or left-handed operation with equ

20、al 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 within14 in. 6 mm of bulkheads,coamings, decks, and other immovable objects.6.1.2 Type 2The Type 2 machine shall be a deck sup-po

21、rted 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 enough toallow any operator with the percentile body dimensions speci-fied herein (see 6.2) to operate the machine while walkingbehi

22、nd 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 man”type and shall immediately shut off air flow to the motor whenreleased. The handle shall detach or be adjustable to andlock

23、able 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 abrasivehubs attached, the machine shall sit level on the deck with theabrasive hubs in contact with the deck and not interfere withdeck

24、 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 machine shallremove deck coating to within 112 in. 40 mm of thebulkheads, coamings, and other immovable objects.6.2 Human Engineerin

25、gThe machines shall be in accor-dance with the human engineering criteria of Practice F 1166except where such requirements conflict with the requirementsof this specification. The machines shall incorporate themaintainability requirements of Practice F 1166 and shallpermit safe and efficient perform

26、ance 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 component, part or control so that anindividual with aforementioned percentile body dimensionsand physical capabilities can safe

27、ly operate, maintain, remove,or replace any item using normally available tools and testequipment. The controls required for operation and mainte-nance shall be in accordance with Practice F 1166 and shall notrequire operator forces to exceed the strength limitations listedtherein.6.3 Interchangeabi

28、lityComponent parts and assembliespeculiar to each type and class of machine from any onemanufacturer shall be fully interchangeable. Such interchange-ability shall not require any alterations or modifications.6.4 Dimensions and WeightThe machines, fully as-sembled with guards; debris collector atta

29、chment (less hosesand collection container); and with operating handles (Type 2)locked in its operating position; fully lubricated and ready in allaspects for operation (less air hose and filter, evaporator andlubricator attachments) shall not exceed the maximum dimen-sions and weight shown in Table

30、 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 beprovided with guards that protect the operator from inadvertentcontact with moving parts and prevent uncontrolled scatteringof c

31、hips 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 hubsphysical dimensions or wear, or interfere with changing of thehubs. The guards/rotary hub containment shall be constructedto ac

32、commodate 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 connection shall be such that the hose doesnot interfere with operation of the machine or the operator. Theinside diameter of the

33、connections shall be in accordance withTable 3.6.8 LubricationLubrication fittings shall be installed sothat lubrication can be accomplished without disassembly ofthe machine (see 6.2). Lubrication materials shall be high-temperature lubricating oil or high-performance grease.6.9 Hubs:6.9.1 Hubs for

34、 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-able with hubs of any other machine of the same type, class,TABLE 1 Maximum Dimensions and WeightsType 1Class AType 1Class BType 2

35、Class 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 (2002)2and manufacture, using only the normally available tools (see8.1.2) for the interchange.6.9.2 Hubs shall be of the following cl

36、asses, classified byintended composition, function, and service life, as follows:6.9.2.1 Class A HubThe ClassAhub shall be nonmetallic,nonwoven, noncontaminating, and shall remove paint, rust, orscale. The Class A hub shall feather the edge of a paintedsurface in a smooth taper from the painted alum

37、inum 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 shall 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 Cla

38、ss 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 steel surfaces. The Class C hub shall operate overprotrusions or obstructions on the deck surface, such as bolts orpadeyes, up to

39、 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 metallictype cutter assembly that removes paint, rust, scale, andnonskid deck coverings on steel surfaces. The Class D hubshall have

40、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 5and 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

41、 1 machineshall operate at nay angle from the horizontal to vertical(including the overhead) without loss of power or descalingefficiency.7.2.2 Type 2 MachineThe assembled Type 2 machineshall operate without loss of power and descaling efficiencyand without tipping when inclined at an angle of 15 fr

42、om 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 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

43、-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. 10 mm for Type1 machine and34 in. 19 mm for Type 2 machine withquick-disconnect connections and an air shutoff valve that shallim

44、mediately 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 long.8.1.11 Hub Changing ToolA standard commerciallyavailable tool for changing hubs shall be provided. The toolsshall not be uniq

45、ue 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 rigid enough to transport themachine and its accessories. The carrying case shall rigidlyhold all accessories with the exceptio

46、n 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.8.1.13 Debris CollectorBoth Type 1 and Type 2 machinesshall be capable of attaching a debris collecting device that willcollect a

47、 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 to continually lubricate the machine or a combi-nation unit shall be installed to ensure satisfactory long-termTABLE 2 Air Suppli

48、esType 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 ConnectionsType 1Class AType 1Class BType 2Class AType 2Class B14 in. 6.3 mm12 in. 12.7 mmTABLE 4 Minimum Path WidthHub for: Minimum Pa

49、th 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 Rust/Scale NonskidClass AMachineClass BMachineClass AMachineClass BMachineClass AMachineClass BMachineA 200 18.5 150 13.9 . . . . . .