QC/T 804-2022Instrument panel assembly and console assembly for passenger cars (English PDF)

4.1 General requirements

4.1.1 Instrument panel assembly and console assembly shall comply with the provisions of this document. They are manufactured according to the product drawings and design documents approved by the prescribed procedures. The dimensions and tolerances of the instrument panel assembly and console assembly shall meet the requirements of the drawings or relevant documents.

4.1.2 The internal protrusions of the instrument panel assembly and console assembly shall comply with the relevant provisions of GB 11552.

4.1.3 The requirements for the appearance of instrument panel assembly and console panel assembly include:

a) The surface components of the instrument panel assembly and console panel assembly shall be free from defects such as sharp edges, cracks, collapse, wrinkles, marks and dirt;

b) The internal components of the instrument panel assembly and console assembly are not allowed to have air bubbles, cracks, paint flow marks, surface warping, blisters, pitting or other defects that affect the appearance;

c) The color, pattern and gloss of the surface of the instrument panel assembly and console assembly shall be consistent with the color plates or samples approved by the prescribed procedures.

4.2 Performance requirements

4.2.1 Dimension stability

The instrument panel assembly and console assembly shall have no obvious deformation. Dimensional changes shall comply with drawing requirements or technical documents.

4.2.2 Chemical resistance

There shall be no obvious gloss change on the surface of the specimen after the test.

There shall be no surface softening, peeling, discoloration, fading and so on. According to GB/T 250, the color fastness level shall be higher than or equal to level 4.

4.2.16.2 Storage box durability

After the test, the storage box shall not show damage to parts, noise, loss of function, loose parts or failure of fastening.

4.2.16.3 Console armrest durability

After the test, the console armrest shall not show damage to parts, noise, loss of function, loose parts or failure of fastening.

4.2.16.4 Air register durability

After the test, there shall be no damage to parts, noise, loss of function, loose parts, fastening failure or failure to maintain the blades at the air register.

4.2.17 Airbag detonation of instrument panel subsystem

During static airbag deployment, the glove box shall remain closed, and the instrument panel airbag door shall be able to open normally. During the static airbag deployment test and after the test, the airbag door on the instrument panel shall not have any hard splashes hitting a normal sitting occupant (considering soft flying objects, no more than 3g).

5.1 General inspection requirements

5.1.1 Test environment conditions

Unless otherwise specified, the environmental conditions of the test shall be a temperature of 23°C±5°C and a relative humidity of 50%±10%. Each of the following performance tests shall comply with this environmental condition. Room temperature shown below is the environmental condition.

5.1.2 Pretreatment

Before the test, the specimen shall be placed in an environment with a temperature of 23°C±2°C and a relative humidity of 50%±10% for at least 48h. For painted parts, it needs to be placed in an environment with a temperature of 23°C±2°C and a relative humidity of 50%±10% for at least 168h.

5.1.3 Appearance

Visually inspect.

5.2 Performance test requirements

5.2.1 Dimension stability

5.2.1.1 Specimen

Instrument panel assembly and console assembly.

5.2.1.2 Test procedure

Perform dimensional measurement before testing. Fix the instrument panel assembly and console assembly on the tooling according to the installation status of the real vehicle. Put in the high temperature test chamber. Placement temperature: 105°C±3°C for instrument panel zone one, 90°C±3°C for instrument panel zone two, 90°C±3°C for console assembly. Placement time is 4h. After storage, take out the sample. Place at room temperature for 4h. Then conduct visual inspection. And use special inspection fixtures, coordinate measuring machines, non-contact or equivalent measurement methods to measure.

5.2.2 Chemical resistance

5.2.2.1 Specimen Take a flat specimen with a size not less than 50mm × 100mm from the surface of different materials of the instrument panel assembly and console assembly. The quantity is at least 5 pieces. Each surface material shall be sampled separately for testing.

5.2.2.2 Test procedure

Add about 1ml of artificial sweat (GB/T 3922), 0.5% soapy water, 75% alcohol, and windshield washer fluid (GB/T 23436) on the surface of the specimen respectively. Let stand for 5min and blot dry with cotton cloth. Then place it at a temperature of 23°C±2°C and a relative humidity of 50%±10% for 24h. Visually evaluate the changes in the test area of the specimen surface. Evaluate the color fastness level of the test area according to GB/T 250.

5.2.3 Emission performance

5.2.3.1 Emission of volatile organic compounds and aldehydes and ketones of the assembly 5. 2. 3. 1. 1 Sample preparation, packaging and transportation Samples are available. Within 24h of production off-line, use non-polluting aluminum foil and/or odorless polyethylene film, for airtight packaging. Avoid direct exposure to strong light or high temperature during sample transportation. Avoid package damage.

Sampling of volatile organic compounds and aldehydes and ketones shall be completed within 14 days after the sample is off-line.

5.2.3.1.2 Sample Pretreatment

5.2.3.3 Condensable components

5.2.3.3.1 Specimen

Cut a circular specimen with a diameter of 80mm from the flat part of the instrument panel assembly and console assembly. When the thickness exceeds 10mm, it shall be thinned to 10mm from the back of the specimen. At least test 2 parallel specimens.

5.2.3.3.2 Test procedure

Put the specimen into a glass beaker with the appearance of the product facing up. Place the glass beaker in an oil bath at 100°C±1°C. Place a weighed aluminum sheet with a thickness of 0.03mm and a diameter of 103mm at the mouth of the beaker. A 21°C ± 1°C cooling plate is covered at the top. The duration is 16h. Remove the aluminum foil after the oil bath. Dry in a silica gel desiccator for 3.5h~4h. Then weigh again. Calculate the mass change of the aluminum foil before and after the atomization test. Record it as the condensable component.

5.2.4 Color fastness to rubbing

5.2.4.1 Specimen

Take a flat specimen with a size not less than 60mm × 150mm from the surface of the soft cladding or decorative layer of the instrument panel assembly and console assembly. The quantity is at least 3 pieces.

5.2.4.2 Test procedure

Fix the specimen on a tribometer that meets the following conditions:

a) The friction head is a circular flat head with a diameter of 16mm;

b) The friction stroke is 104mm;

c) Apply a vertical downward pressure of 9N±0.2N above the friction head.

Wrap the rubbing head with a square cotton cloth (conforming to GB/T 7658.2-2008) with a size not less than 50mm × 50mm. Perform 10 reciprocating dry frictions on the specimen. The friction frequency shall be 1Hz. After the test, visually evaluate the changes in the test area on the surface of the specimen. The level of color fastness to staining on the surface of the rubbing cloth shall be evaluated according to the requirements of GB/T 251. According to the requirements of GB/T 250, evaluate the color fastness level of the specimen surface.

5.2.5 Scratch resistance

5.2.5.1 Specimen

Take a flat specimen with a size not less than 70mm × 70mm from the injection molding surface of the instrument panel and console assembly. The quantity is at least 3 pieces.

5.2.5.2 Test procedure

Before the test, use a colorimeter to measure the L value of the test area under the CIELAB D65/10° light source. Measure 5 times. The average value is recorded as L0.

Use a scratch meter. Use an indenter with a radius of 0.5mm. Under the load of 10N ± 0.1N, the surface of the sample is scratched at a speed of 1000mm/min ± 50mm/min.

The scratch length is 40mm. The scratch spacing is 2mm. The number of scratches is 20. Rotate the sample 90°. Then make 20 scratches. After the test, measure the L value of the test area again. Measure 5 times. The average value is recorded as Lt. Calculate the change of L value before and after the test deltaL=Lt - L0.

5.2.6 Light aging resistance

5.2.6.1 Specimen

Take a flat sample with a size not less than 70mm × 140mm from the surface of different materials on the instrument panel assembly and console assembly. The quantity is at least 3 pieces. One of them is reserved as the original specimen for appearance evaluation after the test, and the other two are used as parallel specimens.

5.2.6.2 Test procedure

Fix the specimen on the xenon photometer sample holder. Continuous light shall be carried out according to the exposure conditions 3 stipulated in GB/T 16991-2008. The instrument panel zone one is illuminated for 5 cycles. The instrument panel zone two is illuminated for 3 cycles. The console assembly is illuminated for 3 cycles. After the test, visually evaluate the change in appearance of the test area on the surface of the specimen. According to the requirements of GB/T 250, visually evaluate the color fastness of the surface of the specimen.

5.2.7 Anti-tackiness

5.2.7.1 Specimen

Take a flat specimen with a size not less than 70mm × 140mm from the surface of the instrument panel and console assembly. The quantity is 1 piece. At least one specimen shall have a smooth surface without striations.

6.1 Exit-factory inspection

The instrument panel assembly and console assembly can leave the factory only after passing the inspection of the manufacturer and issuing a certificate of conformity. See Table 7 for exit-factory inspection items.

6.2 Type inspection

6.2.1 In one of the following situations, the manufacturer shall carry out type inspection:

a) When the product is trial-formulated and identified or produced in a different place;

b) After official production, in case of major changes in design, process and materials;

c) When the production is resumed after the suspension of production for more than 1 year;

d) When there is a large difference between the exit-factory inspection and the last type inspection;

e) During normal production, it shall not be less than once every 2 years;

f) When the national quality supervision agency requests for type inspection.

6.2.2 The instrument panel assembly and console assembly for type inspection shall be taken from the same batch of products that have passed the exit-factory inspection. The sampling quantity of the same type and model shall not be less than 6 pieces. In the inspection items, if the combustion characteristics fail, re-inspection is not allowed. The type inspection is determined as unqualified. If any one of the other items fails, it is allowed to double the sampling number of failed items (or negotiated between the supplier and the purchaser) to reinspect the failed items of the product.