ASME B107.36-2002 pdf free download.PLIERS: LOCKING,CLAMP, AND TUBING PINCH-OFF.
4.4 Handles
Handics of phcrs shall he through hardcncd from 30 to 50 HRC or case hardened from 75 to &6 HRISN, with a case depth o( a minimum of 0.010 in. (0.25 mm). Handles shall be so shaped as to afford a comfortable gnp and shall be free from rough edges and sharp corners. When the pliers we kicked in any posluon of the jaws., the minimum handle clearance between the fized and movable handle shall be as specified in the appropriate tables. Outer hid-gnppuig surfaces of handles shall be smooth, knurled, or impressed.
4.5 JoInts
Pliers joints shall have no eXCeSSiVe looseness, play. or any other ndicat,ons of side play of the two halves of the pliers when opened or closed, which could impair the function of pliers. Joint fasteners shall be through hardened from 25 to 50 HRC. Where fasteners receive a case hardening treatment in addition to the through hardening, a maximum hardness of 60 HRC or equivalent will be permitted.
4.6 Jaws
4.6.1 Jaw Openings. Ends of jaws shall open, when adjusted by the screw, to the entire respective clamping range minimum specified in Tables 2 through 5. Pliers shall operate in a smooth and uniform manner.
4.62 Jaw Hardness. Jaws shall be through hardened from 35 to 50 HRC or case hardened from g3 to 90 HRI5N, with a case depth rnirnmum of 0.010 in. (0.25 mm). If provided, swivel pads need not be hardened.
4.7 Adjusting Screw
Adjusting screw located at the end of handle shall have a minimum hardness of 30 HRC.
4.9 Finish
4.9.1 Appearance. Surfaces shall be tested in accordance with ASME B46.1. Surfaces shall be free from pits, nodules. baum, and other conditions that may adversely affect perfvrmancc or appearance. Ground surfaces shall hac a maximum surf&e roughness of 200 pin. (5.1 tim) anthmctic average. Measurement of the finish shall be macic with a mcaauring instrument using a cutoff length of 003 in. (0.8 mm).
4.9.2 Coating. Coating shall be adherent, smooth. continuous, and free of pits, blisters, nodules. oside scale, and any other conditrnns that may interfere with the protective value and serviceability of the pliers. Cadmium plate shall not be allowed. Pliers shall be coated with a supplementary ust-prevcn*.itive treatment.
4.10 SprIng
Spnng shall be capable of opening the jaws to the maximum value of the respective clamping range minimum dimension an specified in the tables for the individual type and class of pliers.
4.11 DimensIons
Dimensions shall be dctcrTnincd by mcasuring the pliers with jaws in the closed and locked position, The overall length measurement shall include the adjusting screw.
4.12 Workmanship
Requirements within this Standard are irnended to describe the best conimcrcial quality pliers available. Pliers shall conform to the requirements of this Standard.
5.3 locking/Load Test — Typ. I
P1icr shall be tested on a systan capable of applying the required minimum test load given in Table 1. The phers handles shall be lockcd. using maximum value shown us Table 1. Test load shall be applied to the Jaw ups in a dirccuon to spread the jaw clamping surfaces apas for a minimum of 10 sec. Pliers shall remain locked while the load is applied. Pliers shall have passed the test if the jaw tips close, and all the joints and adjusting screw work properly after removal of the load.
5.4 Pinch-Off Test — Type II
Pliers shall be tested using the following procedure:
5.4.1 Fit a 0.25 in. (6.4 mm) outside diameter soft copper tube, with a 0.030 in (0.76 mm) wall thickness, onto an air line having an air pressure of 95 to 100 ltWsq in. gauge (psig) (6.7 so 7.0 kPa).
5.4.2 Place the copper tube between the jaws of the pliers 0.50 in. (12.7 mm) minimum from free end of the tube. Apply 70 so 75 lb of force (31) to 334 N) to the end of the movable handle to close the pliers. With air pressure of 95 so 100 psig (6.7 to 7.0 kPa) applied to one end of the tubc. inimersc the other end of the tube and the pliers in water.