ARMY A-A-52594-1996 DRILL ROD SECTION ROCK DRILL FOR DRIFTER DRILLS《堕海演练凿岩机钻杆节》.pdf
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1、A-A-52574 m 9979774 OLOOV zas rn Beneficial comments, recommendations, additions, deletions clarifications, etc. and any other data which may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000. 4 INCH-POUND
2、 A-A-52594 February 14.1996 SUPERSEDING MS39329 6 November 1968 COMMERCIAL ITEM DESCRIPTION DRILL ROD SECTION, ROCK DRILL FOR DRIFTER DRILLS The General Services Administration has authorized the use of this commercial item description (CID) for all federal agencies. 1. SCOPE. This CID covers a dril
3、l rod section for use with drifter drills. 2. SALIENT CHARACTERISTICS 2. I Materials. Unless specified herein, the materials used shall be in accordance with manufacturers materiais specification for drill rod. 2.2 Desim and construction. The drill rod section shall be in accordance with the require
4、ments of this CID and shall be the manufacturers standard commercial product (see Figure 1). Drill rod section nominal overall length shail be 12 feet (fi) (3.65 meters (m). Drill rod section outside diameter (OD) shall be not more than 1.5 inches (i) (3.8 centimeters (cm) and the aidwater passagewa
5、y shall be a nominal 0.5 in (1.27 cm) in diameter. Threaded portion shall be 1.5 in (38 cm) rope thread. Each end of the drill rod shall be threaded not less than 24 in (61 cm). Threads shall be turned at 90 degrees to centerline of the piece within 0.005 in (O. 13 millimeters (mm). Drill rod ends s
6、hall be square with thread within 0.005 in (0.13 mm). Drill rod comers shall be chamfered in accordance with good commercial practice. Full length of the rod shall be carburized inside and outside. External surfaces of the rod shall be carburized to a case Provided by IHSNot for ResaleNo reproductio
7、n or networking permitted without license from IHS-,-,-n Inches 12 2 0.5 0.5 1.5 1.5 A-A-5 25 94 Centimeters 30.5 5 1.27 1.27 3.8 3.8 depth of not less 0.045 in (1.15 mm) but not more than 0.065 in (1.65 mm). Internai surfaces shall be carburized to a depth of not less than 0.035 in (0.9 mm). Rod sh
8、all have a case hardness between Rockwell “C“ (RC) hardness RC 58 and RC 65. The manufacturers standard means for maintaining thread lubrication shall be provided. -5 NOM DIA r Conversion 2.3 Identification and marking. Identification and markings of the driu rod shall be permanent and legible and s
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