ASME B107.25-2002 pdf free download.PLIERS:PERFORMANCE TEST METHODS.
ASME B107.25 details the purpose, apparatus, procedures, and performance specifications for the functional testing of pliers. It is intended to be used by manufactur ers, purchaser’s, and other persons involved with evaluating pliers products. Test procedures described herein are used to evaluate conformance to performance requirements.
Many of the tests described herein are inherently hazardous and, therefore, adequate safe guards for persons and property shall be employed when conducting these tests. Refer to the “Guide for Hand Tools — Selection, Saftey Tips. Proper Use and Care” for additional information.
3 NORMATiVE REFERENCES
The following documents form a part of this Standard to the extent specified herein. At the time of publication, the editions indicated were valid. AU standards are subject to revision, and parties to agreements based on this Anwrican National Standard are encouraged to investig ite the possibhuity of applying the most recent editions of the documents indicated below.
ASTM E18-O0, Standard Methods of Test for Rockwell Hardness and Rockwell Superficial Hardness of Metalic Materials
ASTM E384-99, Test Methods for Microhardness of
Publisher: American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 1942S-2959
Guide to Hand Tools — Selection, Safety ups. Proper Use and Care
Publisher Hand Tools Institute (Iffi), 25 North l3road- way, Tarrytown. NY 10591
deflection: movement under load.
force; the action of one body on another body that changes, or tends to change, the motion of the body acted on.
initial lxd: a small force applied to the pliers handles during the hand load test prior to the major load.
load: mass or force, depending on use. A load that produces a force due only to gravity may be expressed in mass units. Any other load is expressed in force units
malor load: the force applied to the pliers handles during the handle load test intended to deflect the handles.
may: see shall, should, and vnay.
moment: a measure of the tendency of a force to rotate a body upon which it acts about an axis.
permanent set; the difference in distance, measured at a right angle to the ccnterline, between handles before and after application and removal of the major load (also know as plastic deformation).
room temperature: 6OF to 80°F.
scored surface: serrated or crosshatched surface to enhance gripping abihty.
shall, should, and may: mandatory requirements of this Standard are characterized by the word shall. If a provision is of an advisory nature, it is indicated by the word should, or is stated as a recommendation. If a provision is of an optional or alternative nature, it is indicated by the word may.
5 TEST PROCEDURES
Unless otherwisc stated herein, all test shall be pcrformed on finished pliers. AU parameters, such as loads, permanent set, and wire properties, shall be defined in individual pliers standards.
SAFETY WARNING: MANY OF THE TESTS REQUIRED
HEREIN ARE INHERENTLY HAZARDOUS AND, THEREFORE, ADEQUATE SAFEGUARDS FOR PERSONNEL AND
PROPERTY SHALL BE EMPLOYED IN CONDUCTING ThESE
5.1 Handle Load Test
5.1.1 Purpose. This test is used to measure the deflection and permanent set of the handles to ensure proper usability of the pliers.
5.1.2 Apparatus. The load application shall adquatcly support the pliers to ensure consistent loading and accurate measurement of handles loads. A typical devise appears in Fig. 1.
51.3 Procedure. Remove comfort grips before testing. Apply Loads perpendicular to the center line.