JB/T 9832.1-1999 This standard is equivalent to ISO 3668:1976 "Visual colorimetry of paints and varnishes". This standard is a revision of ZB T60 005-89 "Visual evaluation method for color difference of paint films on agricultural and forestry tractors and machinery". During the revision, only editorial changes were made according to relevant regulations, and the main technical content remained unchanged. This standard specifies a method in which the observer visually compares the color of the paint film sample with the color of the standard color card under certain lighting conditions to make a qualitative assessment of the color difference between the sample and the standard color card. This standard is applicable to the assessment of the quality of paint films on agricultural and forestry tractors and their machinery. This standard was first published on year month day. JB/T 9832.1-1999 Visual evaluation method for color difference of paint films on agricultural and forestry tractors and machinery JB/T9832.1-1999 Standard download decompression password: www.bzxz.net

S65.60.10
Machinery Industry Standard of the People's Republic of China
JB/T9832.1—1999
eqIso3668：1976
Tractors and machinery for agriculture and forestryVisual cotmparison ofthecolor ofpaints1999-08-06 Issued
State Machinery Industry BureauWww.bzxZ.net
Implementation on 2000-01-01
JBT832.1—1999
This standard is equivalent to 4 scalar 1S02668：1976 "Monthly Visual Colorimetry of Color Filter and Color Elimination Paint Color Ratio" This standard is a revision of ZBT6005-89 Daytime Visual Evaluation Method for Color Difference of Net Film on Forestry Tractors and Machinery. During the revision, the original standard was modified in a concise way, and the main technical content remained unchanged. This standard is effective from the date of application ZBT60005-89. This standard is proposed by the National Technical Committee for Standardization of Tractors and Equipment and is a subsidiary of the National Technical Committee for Standardization of Tractors and Equipment. 1. Scope
Machinery Industry Standard of the People's Republic of China
Tractors and equipment for agriculture and forestry-visual comparison of the color difference of the paint film JB/T9832.1-1999
q18o3668:1976
ZBT60 (KI5-89
This standard specifies a method for making a qualitative assessment of the color difference between the sample and the standard color card by visually comparing the color of the film sample under certain lighting conditions. This standard is used to assess the quality of films produced by agricultural and forestry tractors and machinery. 2 Reference Standards
The provisions contained in the following standards are all cited in this standard and constitute the provisions of this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision. All parties using technical standards should explore the possibility of using the latest versions of the following standards. GBT3181-15 Family Color Standards
JB56 73-1991 General Technical Specifications for Anti-Hanging Paints for Agricultural and Forestry Machinery 3 Terminology
3! Lightness: a measure of the color, used to indicate how much light an object reflects. 3.2 Chroma: a measure of the color, used to indicate the degree of gray that deviates from the same lightness. 3.3 Chroma: a measure of the color, used to determine the color of an object. The color of red, yellow, green, blue, purple or the intermediate color between two colors:
4 Test colorability
4.1 The test eye must have normal exposure, and the lighting and observation equipment must be accurate. 4.2 The color and gloss of the test specimen are uniform, without scratches, spots and other surface defects. 4.3 Before the test, the room should be exposed to sunlight for at least 16 hours, and avoid direct sunlight, and the air should be naturally circulated. 4.4 The colorimetric room should have an artificial light source with a calibrated color temperature of 6504K, and the light entry angle should be zero diffuse. If natural light is used, the brightness should not be less than 2kIx, and direct sunlight should be avoided. Under appropriate circumstances, the comparison should be carried out in a room. 4.5 The film thickness should comply with the relevant provisions of 4.2 in 1BT5673-1991. 5 Equipment
5.1 Colorimetric room (the brightness of the colorimetric position should be between [-4Kx). 5.2 The standard color should comply with GB/T318I, which was approved by the State Machinery Industry Bureau on August 6, 1999, and the liquid should be 200- 01-01 Implementation
Test method
./9832.1—1999
6.1 Place the test sample and the standard color card side by side in the color room or under natural light, on the same plane. b.2 The observer's eyes are about 500mm away from the test sample, and the color of the test sample and the standard color card are compared under natural light from a viewing angle of 450. 3 Then evaluate the color difference in terms of lightness, chroma and hue depth. 7 Test report
The test sample shall be summarized as follows: Test type;
) Light source (natural light or artificial light);
c) Test results (brightness, chroma and hue); Test period, personnel
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