GB/T 3956-1997
Replaced
T/GDWCA 0040-2018
Active
Group standards
T/GDWCA 0040-2018 Guide wheel technical specification Test method
T/GDWCA 0040-2018 Guide wheel technical specification Test method
Price:
$ 20.00
Basic Information
Standard Code:
T/GDWCA 0040-2018
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Power semiconductor devices and components
ICS Name:
Comprehensive overview of wires and cables
Publish Date:
2018-09-01
Implement Date:
2018-10-01
Scope
Scope: This standard specifies the implementation rules and operating procedures for the inspection of guide wheels, general guide wheels, meter guide wheels, fiber optic cable guide wheels, enameled wire winding machine guide wheels, pulling guide wheels, drawing annealing machine guide wheels, and other guide wheels (hereinafter referred to as guide wheels). This standard is intended for use by guide wheel manufacturers, testing departments, and users. Main technical content: I. Measurement of Dimensions and Geometric Tolerances (I) Measurement Environment 1. Temperature: (20 ± 2) °C 2. Relative Humidity: (50 ± 10)% RH (II) Measurement Equipment Use appropriate inspection tools and instruments for testing (including three-coordinate measuring machines, image measuring instruments, vernier calipers, micrometers, roundness gauges, etc.), and the accuracy of the inspection tools and instruments shall not be less than one-third of the required accuracy of the product. (III) Measurement Steps 1. Clean the surface of the product with a dust-free cloth and alcohol. 2. Fix the product and adjust the inspection tools and instruments. 3. Measure linear dimensions and angular dimensions in accordance with the provisions of GB/T 3177-2009. 4. Measure geometric tolerances in accordance with the method specified in GB/T 1958-2017. 5. The readings of the measurement results shall be retained to three decimal places (in mm). 6. Measure each dimension and geometric tolerance value more than three times (including three times). For the aperture of a circular hole, the reported result shall be the minimum value of the obtained measurement data; for the outer diameter of a shaft-type part, the reported result shall be the maximum value of the obtained measurement data; and for other dimensions and geometric tolerances, the reported result shall be the average value of multiple measurements. II. Surface Roughness Measurement (I) Measurement Environm
Development Information
Related Standards
GB/T 17650.1-1998
Replaced
GB/T 17650.1-1998 Test on gases evolved during combustion of materials from cables Part 1:Determination of the amount of halogen acid gas
GB/T 17650.2-1998
Replaced
GB/T 17650.2-1998 Test on gases evolved during combustion of materials from cables Part 2:Determination of degree of acidity of gases by measuring pH and conductivity
GB/T 17651.1-1998
Replaced
GB/T 17651.1-1998 Measurement of smoke density of cables burning under defined conditions Part 1:Test apparatus
GB/T 17651.2-1998
Replaced
GB/T 17651.2-1998 Measurement of smoke density of cables burning under defined conditions Part 2:Test procedure and requirements
GB/T 4074.1-1999
Replaced