JB/T 9951-1999 This standard is a revision of ZB J65 013-89 "Test for Durability of Carbide Circular Saw Blades for Woodworking". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies the test methods and indicators for the durability of carbide circular saw blades for woodworking. This standard is applicable to all kinds of carbide circular saw blades for woodworking. This standard was first issued on March 30, 1989. JB/T 9951-1999 Test for Durability of Carbide Circular Saw Blades for Woodworking JB/T9951-1999 Standard download decompression password: www.bzxz.net

ICS79.120.10
Machinery Industry Standard of the People's Republic of China
JBT9951-1999
Carbide Circular Saw Blades for Woodworking
Durability Test
1999-05-14 Issuedbzxz.net
National Bureau of Machinery Industry
Implementation on 2000-01-01
JB/T9951-1999
This standard is a revision of "Carbide Circular Saw Blades for Woodworking - Durability Test" (hereinafter referred to as "Durability Test"). During the revision, only editorial changes were made in accordance with relevant regulations, and the technical specifications were not changed. This standard replaces 2BJ65113 from the date of implementation. Appendix A of this standard is the appendix of the standard. This standard is proposed by the National Woodworking Machine Tool and Cutting Tool Standardization Technical Committee: This standard is proposed by the Fuzhou Woodworking Machine Tool Research Institute, and the drafting person of this standard is: Harbin First Machinery Research Institute! The drafting person of this standard is: Fu Gongqi and Jiang Shihong. This standard was first issued on March 30, 1989.
Machinery Industry Standard of the People's Republic of China
Woodworking Carbide Circular Saw Blade
Durability Test
Rate Standard Specification This standard specifies the test force and indicators of the durability of the blade. This standard applies to various woodworking tools. Carbide saw blades (hereinafter referred to as saw blades. Cited standards
JH/E9951-1999
Daiying 7.1653-89
The provisions contained in the following standards constitute the text of this standard through reference in this standard. When this standard is published, the versions shown are valid. All components will be revised. All parties using this standard should explore the possibility of using the latest versions of the following standards: Particleboard
GRT48971992
Door Month / 113%—1999 T Carbide Drill Blade JE/T 54347—1994
3 Saw blades for testing
Hardened round discs with high quality and high quality 3.1 The bottom of the saw blades shall comply with the provisions of JAT14388. 3.2 The sampling of saw blades shall be carried out according to the provisions of JAT51147. Two pieces are selected from the sample. 3.3 The test specimens (representative) are recommended to use 315×3.2×30 yuan 4 test pieces
4.1 The test pieces are selected in accordance with the provisions of BT4897. 4.2 The thickness of the test pieces is: mm; 13mm.
5: Testing machine tools and inspection fixtures
5. The machine tools used for the test shall comply with the relevant accuracy standards. 5.2 After the saw blade is installed on the misaligned axis, the increase in its end runout and radial runout shall not be greater than 0 1mml. 5.3 According to the provisions of the cutting table, the test pick-up and the radial runout of the joint bottom are approved by the original machinery industry on 1999-05-14. The first micrometer is more than the reading of the micro-mirror. The cutting specification test is implemented in the cutting specification of the dial table 2. The cutting response is the test step and the summer request JH/T 9951-1999
Table 2 Test cutting specifications
7.1 Before the test, or the test piece is numbered, a comprehensive test is conducted. 7.2 Check whether the test piece meets the requirements specified in GB/T4897. 7.3 Check whether the accuracy and performance of the test machine meet the standard requirements.
7.4 When conducting a longitudinal cutting test according to the cutting specifications specified in Table 2, stop the machine to check the grinding and polishing of the misaligned teeth every 1000m of cutting. After three times, stop the machine to check every 500m of cutting. When conducting a transverse cutting test, stop the machine to check every 500m of cutting. 7.5 All test data are in accordance with Appendix A ( The requirements of the standard are detailed in the following supplementary information and the test stop conditions. During the cutting process, the test should be stopped when one of the following situations occurs: a) The quality of the test piece's surface does not meet the requirements of the corresponding machine tool's working accuracy: b) The average value of the scratches after grinding reaches 0.5mm [VB value measurement method Appendix (Standard Appendix)]: c) There are defects such as a tooth friction force of more than 1.5mm or a few wrinkles on the disc that affect the performance: serious noise occurs or the scratching cannot be stopped. 9 Durability index
When the average value of the increase or decrease after firing reaches 1.5mm, the durability index should comply with the requirements of Table 3. Table 3 The previous cost refers to the initial production and the quality grade without loosening square pounds. Superior products. Jinfenchun door panels. Superior products. JB/T 9951-#999. Cutting specifications. National standards. Explanation of panels. JBT9951-199 (standard tree record). Measurement of sawtooth back angle wear VB value. B1 The amount of sawtooth back angle wear VB value. Measure the wear value of the back angle of the eight teeth (evenly distributed on the whole four tubes) on the disc saw blade (excluding the shear blade). Then calculate the arithmetic average 8 value and enter it into the record table.
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