ASME B107.44-2002 pdf free download.GLAZERS’CHISELS AND WOOD CHISELS.
This Standard provides performance and safety requiremcnLs for glaziers’ chisels and wood chisels. It is intended to serve as a guide in selecting. testing, and using the hand tools covered. Ii is not the purpose of this Standard to specify the details of manufacturing.
This Standard is also mCant to scrvc as a guide in developing manuals and posters, and for training personnd to work safely.
This Standard may bc used as a guide by state authorities or other regulatory bodics in the formulation of laws or regulations. It is also intended for voluntary use by establishments that use or manufacture the tools covered. The methods employed to ensure compliance with this standard shall be determined by the proper regulatory or administrative authority.
The following is a list of publications rcfcrcnccd in this Standard.
Gwdc 10 Hand Tools — Selection. Safety Tips. Proper Usc and Care
Publishcr Hand Tools Institute (HTI). 25 North Broadway. Tarrytown. NY 10591
ANSI Zg7.l-1989, Practice for Occupational and Educational Eye and Face Procction; Supplement ANSI Z87.1 a- 1991
ANSI Z535.4-1998, Product Safety Signs and Labels
Publisher: American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY, 10036
ASTM E 18-00, Standard Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials
Publisher: Amcrican Socicty for Testing and Matenals (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428
See ligs. 1. 2, and 3 as applicable.
4.1.1 The struck face shall have a convex shape or a flat surface with a chamfer of approximately 45 deg (or an equivalent radius) around the perimeter with the lesser width (sec Fig. 2) equal to approximately one- tenth of the body stock size. For example, if the body stock sizc equals 1 in. (25.4 mm), then the lesser chamfer width should equal approximately 0.1 in. (2.5 mm).
4.12 Chisels and handles shall be free of nonfunctional sharp edges, points, and surface roughness that could inflict personal injury on the uscr when handling the tool.
4.1.3 Chisels shall pass the applicable tests in para. 5.
4.2 Materials
Thc materials uscd in the manufacture of chisels shall be such as to produce chisels conforming to the requirements specified herein.
4.3 Mechanical Properties
4.3.1 Chisels shall be hardened and tempered to 53 HRC to 62 HRC or equivalent for a distance of not less than 0.25 in. (6.4 mm) from the cutting edge.
4.3.2 The hardness of the struck face of the chisel shall not exceed 44 HRC or equivalent.
Many tests required herein are inherenUy hazardous, and adcquatc safeguards for personnel and property shall be cmploycd in conducting such tests.
Scparatc (new) chisels shall be used for each of thesc tests. Failure to mect the rcquircmcnts of any onc of the tests indicates that the chisels do not comply with this Standard.
5.1 Hardness Determination Test
Hardness dctermination with respect to cutting edges and struck faccs shall be made on a fixtured tool or on a suitable mounted or unmounted specimen that has been cut from the tool using the wet abrasive or other equivalent method. Any hardness Lest that utilizes equipment and methods equivalent to Rockwell hardness dcterminauon as specifIed in ASTM E 18 will be acccpiablc.
5.2 Side Force Test
5.3 Impact Test
Chisels shall be mounted vertically with the cuttingedge resting on a hardwood test dowcl and orientedat 90 deg to the axis of the dowel (rod). The chiselshould be retained in a vertical position with a snug-fitting fixture permitting unrestricted vertical movementin response to the impact of the drop weight on thcchiscl struck face.The dowel shall have a diamcter ofl in. (25.4 mm) and shall be made of hardwood, suchas maple,birch,or beech.