ASME B107.59-2002 pdf free download.SLUGGING AND STRIKING.
5.1 Hardness Determination Tact
Hardness determination shall be made rn accordance with ASTM ElK or cqunaknt
5.2 Impact Tact
Sanpk wrenches shall be subjected to the inç.ct teat in para 5.21 or 5.2.2, depcadi.g on the style of wrench. The struck block of the wrench shall not crack or chip. Them shall be no bending of the shank or twisflng of the boa end. There shall be no cracb evident on any postlon of the wrcncfr Normal deformabon of the struck face and the boa end of the wrench is permitted.’
5.2.1 Slugging Wranch. Three sançks of the same style and size slugging wrench shall be mounted on a hcaagonal mandrel with the middle si’ench offset 30 deg with respect to the other wrenches. The hexago. nal mandrel shall rrct the requwemeots of ASME B)07.6 or ASME Rl07.9M as applicable. Steel shims 0.25 in. (6.4 mm) thick shall be placed under the heads of the two wrenches on the ends of the mandrel, and the assembly dimpled at each of these heads to a rigidly supported steel block weighing not less than 4(10 lb (l*2 kg). The drop weight shall hare a striking face hardness of not less than 45 HRC or equivaleili nor more than t) HRC or eqwvalenl and shall be dropped squarely onto the struck face of the middle wrench. The striking face thameter of the drop weight shall be not less than 0.375 in. (9.53 mm) larger than the struck face width of the wrench being struck.
6 SAFETY REQUIREMENTS AND UMITAT1ONS OF USE
Instructors and employers shall stress proper use and safety in the use of slugging and striking wrenches and shall emphasize the necessity to wear and ensure the use of safety goggles. The publication. Guide to Hand TooLs—Stkcrton, Safety Tapi. Proper Us. and Care provides gu.dehnes for the safe use of hand tools,
(a) Slugging and stnkng wrenches are special-purpose tools designed and intended only for use with heavy-duty fasteners where shock or impact is needed to fully tighten or loosen.
(b) To avoid possible eye or other bodily injury. slugging and striking wrenches shall be used only For the purpose specified in para 6(a).
(c) A stnking tool should always be used w:th the striking face parallel to the struck face of the wrench. Glancing blows, overstnkes, and understrikes should be avoided. No surface of the wrench other than the struck face shall he struck. The striking tool of the appropnate size shall have a striking face diameter not less than 0.375 in (933 mm) larger than the struck face of the wrench.
(d) To avoid possible eye injury from flying objecis. safety goggles or equivalent eye protection conforming to ANSI 7.87.1 shall be worn by the uer and all persona in the immediate area where any slugging and striking wrench is being used.
(e) Slugging and striking wrenches shall not be used with “cheater pipes or other means to extend the length of the tool.
(f) Slugging and smIting wrenches shall be inspected pnor to each use and their use disconunued at the first sign of bending of the shank or chipping or cracking of the box end or struck block.
(g) Deformation of the wrenching configuration may occur from tool usage. Wrenches shall be inspected prior to each use and their use discontinued at the first sign of significant wrenching surface detenoration
(h) Except as indicated in pam. 6(i), no amea, section, or portion of the wrench shall be ground, welded. treated by reheating, or othenwise altered from the original condition as furntshed by the manufacturer.
(i) At the first indication of mushrooming. the struck face and struck face chamfer of the wrench shall be redressed to its original contour by the use of a hand file or whetstone.2
(j) Care shall be exercised to prevent the wrench from dislodging from the fasiner or nut while being impacted.
(k) Each wrench shall be permanently marked by the manufacturer with the following safety message or equivalent.