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QC/T 1138-2020 PDF in English


QC/T 1138-2020 (QC/T1138-2020, QCT 1138-2020, QCT1138-2020)
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QC/T 1138-2020: PDF in English (QCT 1138-2020)

QC/T 1138-2020
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
T 34
Sliding Window Glazing Assembly for Road Vehicles
ISSUED ON: DECEMBER 09, 2020
IMPLEMENTED ON: APRIL 01, 2021
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword...6
1 Scope...7
2 Normative References... 7
3 Terms and Definitions...8
4 Classification...8
5 Requirements... 9
6 Test Methods... 13
7 Inspection Rules... 24
8 Packaging, Marking, Transportation and Storage... 26
Sliding Window Glazing Assembly for Road Vehicles
1 Scope
This Document specifies the terms and definitions, classification, requirements, test
methods, inspection rules, packaging, marking, transportation and storage of sliding
glass assembly for road vehicles.
This Document is applicable to sliding window glazing assembly for road vehicles with
openings in fixed glass.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) is applicable to this document.
GB/T 3785.1-2010 Electroacoustics - Sound Level Meters - Part 1: Specifications
GB 9656 Safety Glasses for Road Vehicles
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests
GB 11552 The Interior Fittings of Passenger Car
GB 11566 External Projections for Passenger Car
GB/T 17340 Road Vehicles - Safety Glasses - Dimensions, Shapes and
Appearances
GB/T 28957.1-2012 Road Vehicles - Test Dust for Filter Evaluation - Part 1:
Silicon Dioxide Test Dust
QC/T 15 General Test Method for Automobile Plastic Products
QC/T 484 Automobile Paint Coating
QC/T 625 Metallic Coatings and Conversion Coatings for Automobiles
QC/T 639 Rubber Weatherstrips for Automobile
After the test, the swaying amount of the movable glass shall be no greater than
1.5mm.
5.7 Push-pull force
5.7.1 Manual sliding window glazing assembly
When the movable glass slides normally, the push-pull force shall be 20N~55N; and
the maximum push-pull force required to start sliding shall be no greater than 55N; the
movable glass shall not move when the component is loaded with an acceleration of
1.5g±0.1g.
5.7.2 Electric sliding window glazing assembly
When the component is loaded with an acceleration of 1.5g±0.1g, the movable glass
should not move.
5.8 Sports durability
After the test, the sliding window glazing assembly shall move smoothly, and there
shall be no sliding frustration, sudden braking, swaying, or other forms of
over-tightening, over-loosening, abnormal noise, etc.; the parts shall have no obvious
deformation and wear, and comply with the provisions of 5.16.
5.9 Vibration durability
During the test, the sliding window glazing assembly shall be free from percussion,
buzzing and other abnormal noises. After the test, there shall be no damage,
displacement, or falling off at all parts.
5.10 Sliding performance of movable glass
During the test, the movable glass shall slide smoothly; and there shall be no
frustration, sudden braking, swaying, or other forms of over-tightening,
over-looseness, abnormal noise, etc.
5.11 Noise
When the movable glass starts, the noise shall be no greater than 64 dB (A); and the
normal operating noise shall be no greater than 60 dB (A).
5.12 Low temperature resistance
After the test, the product shall be free of flaws, cracks, ashing, or discoloration, and
comply with the provisions of 5.2 and 5.4.
5.13 High temperature resistance
After the test, the product shall be free of flaws, cracks, ashing, or discoloration, and
comply with the provisions of 5.2 and 5.4.
5.14 High and low temperature-resistant cycle
After the test, the product shall be free of flaws, cracks, ashing, and discoloration, and
comply with the provisions of 5.2, 5.4 and 5.16.
5.15 Corrosion resistance
After the test, there shall be no matrix corrosion on the surface of the metal parts.
5.16 Rain-proof
There shall be no water leakage, water seepage or overflow at the junction between
fixed glass and movable glass.
6 Test Methods
6.1 Test conditions
Except for special provisions, the test shall be carried out under the following
conditions:
a) Ambient temperature: 20°C±5°C
b) Atmospheric pressure: 8.60×104Pa~1.06×105Pa;
c) Relative humidity: 40%~80%.
6.2 Appearance quality
Take the product as the specimen; and place the specimen on the test bench at an
ambient illuminance above 1000Lx. The inspector is 600mm~800mm away from the
testing surface of the specimen; if the angle of sight to the testing surface is greater
than 45°, observe the inner and outer surfaces, and confirm whether there shall be
defects within 10s.
6.3 Shape and size
Take the product as the specimen; the specimen shall be placed for at least 72h under
the test conditions specified in 6.1 before the test; and then tested according to the
customer's requirements.
6.4 Binding power
6.7.3.1.1 Fix the specimen on the tooling according to the loading method; and the
handle of movable glass is in the opened state.
6.7.3.1.2 Pull the movable glass uniformly in the horizontal direction at a speed of
20mm/s±1mm/s; use a push-pull force gauge to measure the pulling force value
during start-up and normal sliding process, and record it.
6.7.3.1.3 Use a horizontal impact machine to horizontally load 1.5g±0.1g acceleration
on the sliding window glazing assembly, and observe whether the movable glass
moves.
6.7.3.2 Electric sliding window glazing assembly
6.7.3.2.1 Fix the specimen on the tooling according to the loading method, and the
movable glass is in the opened state.
6.7.3.2.2 Use a horizontal impact machine to horizontally load 1.5g±0.1g acceleration
on the sliding window glazing assembly, and observe whether the movable glass
moves.
6.8 Sports durability
6.8.1 Specimen
Take the product as the specimen, the quantity is 3 pieces. The specimen shall be
placed for at least 72h under the test conditions specified in 6.1 before the test.
6.8.2 Test device
Programmable environmental test chamber. Accuracy requirements: temperature
deviation ±2°C, relative humidity deviation ±4%, temperature uniformity no more than
2°C, relative humidity uniformity no more than 4%.
6.8.3 Test dust
The test dust shall be the dust with the code name GB/T 28957-BF1 in GB/T
28957.1-2012 or the dust with similar parameters.
6.8.4 Test procedures
6.8.4.1 Fix the specimen on the tooling according to the loading method, the movable
glass is in the closed state.
6.8.4.2 Place the tooling containing the specimen in the high and low temperature test
chamber
6.8.4.3 Use the drive tooling to drive the manual sliding window glazing assembly;
6.10.3.1.3 Observe and record the sliding condition of the movable glass.
6.10.3.2 Electric sliding window glazing assembly
6.10.3.2.1 Fix the sample on the tooling according to the loading method; and the
movable glass is in the fully opened state.
6.10.3.2.2 Slide the movable glass at the rated speed.
6.10.3.2.3 Observe and record the sliding condition of the movable glass.
6.11 Noise
6.11.1 Specimen
Take the product as the specimen, the quantity is 3 pieces. The specimen shall be
placed for at least 72h under the test conditions specified in 6.1 before the test.
6.11.2 Test site and instrument
The test site is a noise test room with a background noise of less than 40dB (A); and
the used instrument is a sound level meter (conforms to the requirements of a Level-1
sound level meter specified in GB/T3785.1-2010).
6.11.3 Test procedures
6.11.3.1 Manual sliding window glazing assembly
6.11.3.1.1 The sliding window glazing assembly is isolated and fixed on the bench
with rubber pads; and placed them in the noise test room together.
6.11.3.1.2 Place the sound level meter above the lower guide rail for 200mm ± 50mm;
and test at a distance of 100mm±10mm from the inner surface of the glass.
6.11.3.1.3 The movable glass is slid from fully opened to fully closed position and then
from fully closed to fully opened position at a speed of 20mm/s by hand for 1 test cycle.
Record the noise values at the start of each cycle and during normal sliding.
6.11.3.1.4 Each specimen is tested for 3 cycles in total; and take the highest value of
noise during start and normal sliding in the 3 cycles as the noise during start and
normal operation of the movable glass of the specimen.
6.11.3.2 Electric sliding window glazing assembly
6.11.3.2.1 Separate the sliding window glass assembly and fix it on the bench with a
rubber pad; and place them in the noise test room together.
6.11.3.2.2 Place the sound level meter at 300mm±50mm above the motor gear for
testing.
6.11.3.2.3 It is a test cycle that slide the movable glass from fully opened to fully
closed position at rated speed, and then from fully closed to fully opened position.
Respectively record the noise values at the start of each cycle and during normal
sliding.
6.11.3.2.4 There are 3 cycles of test for each specimen; and take the highest value of
noise during start and normal sliding in the 3 cycles as the noise during start and
normal operation of the movable glass of the specimen.
6.12 Low temperature resistance
6.12.1 Specimen
Take the product as the specimen, the quantity is 3 pieces. The specimen shall be
placed for at least 72h under the test conditions specified in 6.1 before the test.
6.12.2 Test device
Environmental test chamber, temperature deviation ±2°C, temperature uniformity no
more than 2°C.
6.12.3 Test procedure
6.12.3.1 Place the specimen in a test chamber at a temperature of -40°C ± 2°C for
48h, and then take it out and place it for 2h under the test conditions specified in 6.1.
6.12.3.2 Visually inspect the appearance of the specimen as specified in 6.2, and
record the appearance state.
6.12.3.3 Carry out the binding test on the specimen according to the provisions of
6.4.3.
6.13 High temperature resistance
6.13.1 Specimen
Take the product as the specimen, the quantity is 3 pieces. The specimen shall be
placed for at least 72h under the test conditions specified in 6.1 before the test.
6.13.2 Test device
Environmental test chamber, the temperature deviation is ±2°C, and the temperature
uniformity is no more than 2°C.
6.13.3 Test procedures
The inner diameter of each water jet is about 1mm.
6.16.3 Test procedures
6.16.3.1 Place and fix the specimen on the rain test frame according to the loading
method, with the outer surface of the specimen facing the rain sprinkler. The movable
glass is in closed state.
6.16.3.2 Adjust the rain sprinkle to aim at the two corners on the upper end of the
movable glass, and the distance between the nozzle and the glass is about 500mm.
6.16.3.3 Open the rainwater source valve; and adjust the valve so that the water
pressure gauge value is 0.3MPa±0.05MPa.
6.16.3.4 After spraying for 5min, observe whether there is any water leakage, water
seepage, overflow, etc. at the joint between the fixed glass and the movable glass.
6.16.3.5 Adjust the rain sprinkler to aim at the two corners on the lower end of the
movable glass. After spraying for 15min, observe whether there is any leakage, water
seepage, overflow, etc. at the joint between the fixed glass and the movable glass.
7 Inspection Rules
7.1 Inspection classification
Inspection is divided into exit-factory inspection and type inspection.
7.2 Exit-factory inspection
7.2.1 Inspection items
Appearance quality, and shape and size.
7.2.2 Batching
The products of the same specification produced continuously with the same material
and the same process are regarded as one batch.
7.2.3 Sampling
The exit-factory inspection items of the products shall be randomly sampled according
to Table 4; or the sampling plan shall be negotiated by the supplier and the purchaser.
When the product batch is larger than 1200 pieces, sampling is done in batches for
every 1200 pieces.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.