ASME B107.36:2002 pdf free download

ASME B107.36:2002 pdf free download PLIERS: LOCKING,CLAMP, AND TUBING PINCH-OFF
4.4 Handles
Handles of plicrs shall be through hardened from30 to 50 HRC or case hardened from 75 to 86 HR15N,with a case depth of a minimum of 0.010 in. (0.25mm). Handles shall be so shaped as to afford a comfort-able grip and shall be free from rough edges and sharpcorners.When the pliers are locked in any position ofthe jaws，the minimum handle clearance between thefixed and movable handle shall be as specified inthe appropriate tables.Outer hand-gripping surfaces ofhandles shall be smooth，knurled, or impressed.
4.5 Joints
Pliers joints shall have no excessive looseness, play,or any other indications of side play of the two halvesof the pliers when opened or closed,which couldimpair the function of pliers. Joint fasteners shall bethrough hardened from 25 to 50 HRC. Where fastenersreccive a case hardening treatment in addition to thethrough hardening, a maximun hardness of 60 HRCor equivalent willbe perinitted.
4.6 Jaws
4.6.1 Jaw Openings. Ends of jaws shall open,when adjusted by the screw,to the entire respectiveclamping range minimum specified in Tables 2 through5.Pliers shall operate in a smooth and uniform manner.
4.6.2 Jaw Hardness.Jaws shall be through hard-ened from 35 to 50 HRC or case hardened from 83to 90 HR15N,with a case depth minimum of 0.o10in. (0.25 mm).If provided,swivel pads need not behardened.
4.7Adjusting Screw
Adjusting screw located at the end of handle shallhave a minimum hardness of 30 HRC.
4.8 Marking
Pliers shall be marked in a plain and permanentmanner with the manufacturer’s name or with a trade-mark of such known character that the source ofmanufacture and country of origin can be readily deter-mined. Marking shall be as permanent as the normallife expectancy of the pliers, providing the surface hasnot becn subjected to a fretting or abrading action,and be capable of withstanding the cleaning normallyexperienced during its intended use.
4.9 Finish
4.9.1 Appearance. Surfaces shall be tested in ac-cordance with ASME B46.1.Surfaces shall be freefrom pits.nodules. burrs, and other conditions that mayadversely affect performance or appearance. Groundsurfaces shall have a maximum surface roughness of200 uin. (5.1 um) arithmetic average. Measurementof the finish shall be made with a mcasuring instrumentusing a cutoff length of 0.03 in.(0.8 mm).
4.9.2 Coating. Coating shall be adherent,smooth,continuous,and free of pits，blisters,nodules，oxidescale,and any other conditions that may interfere withthe protective value and serviceability of the pliers.Cadmium plate shall not be allowed.Pliers shall becoated with a supplementary rust-preventative treatment.
4.10 Spring
Spring shall be capable of opening the jaws tothe maximum value of the respective clamping rangeminimum dimension as specified in the tables for theindividual type and class of pliers.
4.11 Dimensions
Dimensions shall be determined by measuring thepliers with jaws in the closed and locked position.Theoverall length measurement shall include the adjustingscrew,
4.12 Workmanship
Requirements within this Standard are intended todescribe the best commercial quality pliers available.Pliers shall conform to the requirements of this Standard.
5TEST PROCEDURES
5.1 Safety
WARNING: MANY TESTS REQUIRED HEREINARE INHERENTLY HAZARDOUs,AND ADE-QUATE SAFEGUARDS FOR PERSONNEL ANDPROPERTY SHALL BE EMPLOYED IN CONDUCT-NG SUCH TESTS.
5.2 Hardness Test
Hardness range specified shall be tested in accordancewith ASME B107.25M.para. 5.3.
5.3 Locking/Load Test- Type l
Pliers shall be tested on a system capable of applyingthc required minimum test load given in Table 1.Thcpliers” handles shall be locked,using maximum valueshown in Table 1. Test load shall be applied to thejaw tips in a direction to spread the jaw clampingsurfaces apart for a minimum of 10 sec. Pliers shallremain locked while the load is applied. Pliers shallhave passed the test if the jaw tips close,and all thejoints and adjusting screw work properly after removalof the load,
5.4 Pinch-Off Test- Type ll
Pliers shall be tested using the following procedure:5.4.1 Fit a 0.25 in.(6.4 mm) outside diameter softcopper tube,with a 0.030 in.(0.76 mm) wall thickness,onto an air line having an air pressure of 95 to 100lbl/sq in. gauge (psig)(6.7 to 7.0 kPa).
5.4.2 Place the copper tube between the jaws ofthe pliers 0.50 in. (12.7 mm) minimum from free endof the tube. Apply 70 to 75 lb of force (311 to 334N) to the end of the movable handle to close the pliers.With air pressure of 95 to 100 psig (6.7 to 7.0 kPa)applied to one end of the tube,immerse the other endof the tube and the pliers in water.
5.4.3 Pliers shall scal the tube by pinching-off theair supply and remain locked on the tube. Pliers shallbe considered to have passed the test if no bubblesappear within 1 min.