QC/T 1075-2017 PDF in English
QC/T 1075-2017 (QC/T1075-2017, QCT 1075-2017, QCT1075-2017)
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Technical specification of honeycomb metal substrate for exhaust catalytic converter
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QC/T 1075-2017: PDF in English (QCT 1075-2017) QC/T 1075-2017
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.060.20
T 13
Technical specification of honeycomb metal substrate
for exhaust catalytic converter
ISSUED ON: APRIL 12, 2017
IMPLEMENTED ON: OCTOBER 1, 2017
Issued by: Ministry of Industry and Information Technology of the
People’s Republic of China.
Attachment:
Number, name and date of implementation of 22 automotive industry
standards
No. Standard number Standard name Number of standard replaced
Date of
implementation
301 QC/T 727-2017 Instrument for automobile and motorcycle QC/T 727-2007 2017-10-01
302 QC/T 803-2017 Oxygen sensor for automobile QC/T 803.1-2008 2017-10-01
303 QC/T 1072-2017 Gear position sensor for automobiles 2017-10-01
304 QC/T 1073.1-2017 Accelerometers for automobiles - Part 1: Linear accelerometers 2017-10-01
305 QC/T 1074-2017
Technical specifications for
automotive parts remanufacturing
products
2017-10-01
306 QC/T 1075-2017
Technical conditions for metal
honeycomb carrier of exhaust catalytic
converter
2017-10-01
307 QC/T 777-2017
Technical conditions for
electromagnetic fan clutch of
automobile
QC/T 777-2007 2017-10-01
308 QC/T 1076-2017
Performance requirements and test
methods for continuously variable
transmission (CVT)
2017-10-01
309 QC/T 1077-2017
Terminology and definitions for
classification of automatic control
transmission for automobile
2017-10-01
310 QC/T 1078-2017 Advertising vehicle 2017-10-01
311 QC/T 1079-2017 Suction & delivery vehicle 2017-10-01
312 QC/T 1080-2017 Mobile loudspeaker for popularization of science 2017-10-01
313 QC/T 1081-2017 Electric power steering device for automobile 2017-10-01
314 QC/T 1082-2017 Motor for electric power steering device of automobile 2017-10-01
315 QC/T 1083-2017 Controller for electric power steering device of automobile 2017-10-01
316 QC/T 1084-2017 Sensor for electric power steering device of automobile 2017-10-01
317 QC/T 1085-2017 X-ray testing for light-alloy wheel of motorcycle 2017-10-01
318 QC/T 1086-2017 Technical conditions for range extenders for electric vehicles 2017-10-01
Table of Contents
Foreword ... 7
1 Scope ... 8
2 Normative references ... 8
3 Terms and definitions ... 8
4 Technical requirements ... 10
5 Test methods ... 12
6 Inspection rules ... 15
7 Marking, packaging, transportation and storage ... 16
Appendix A (Informative) Substrate specification parameters ... 17
Technical specification of honeycomb metal substrate
for exhaust catalytic converter
1 Scope
This Standard specifies the technical requirements, materials, test methods,
inspection rules, marking, packaging, transportation and storage of the
honeycomb metal substrate for exhaust catalytic converter.
This Standard applies to the honeycomb metal substrate for exhaust catalytic
converter of Class M and Class N motor vehicles.
2 Normative references
The following documents are essential for the application of this Standard.
For dated references, only the dated editions apply to this Standard. For
undated references, the latest editions (including all amendments) apply to
this Standard.
GB/T 31942 FeCrAl foil for metallic honeycomb substrates
3 Terms and definitions
The following terms and definitions apply to this Standard.
3.1 Honeycombed structure
A honeycomb-like spatial structure composed of a plurality of spatial channels
surrounded by thin walls having a certain outer shape, such as a cylindrical
shape.
3.2 Honeycomb metal substrate (hereinafter referred to as substrate)
A place where the metal material is fabricated into a honeycombed structure
and a housing, providing a purification reaction of the engine exhaust.
3.3 Density of cells
The end face of the honeycombed structure, excluding the outermost layer
and the surrounding layer of the middle hole, the number of holes per unit
area may be expressed in metric (or British) area units.
3.4 Net volume of substrate
The volume of the honeycombed structure contained in a single substrate,
and the substrate housing is not counted. If a single substrate contains
multiple relatively independent honeycombed structures, the void volume
between each honeycombed structure shall be excluded.
3.5 Total volume of substrate
The volume of space enclosed by the substrate size.
3.6 Substrate size
The outer size of the substrate.
3.7 Substrate mass
The total mass of the housing of the substrate before coating the catalyst and
the honeycombed structure fixed to the interior thereof.
3.8 Catalytic converter
A device mounted in an exhaust system of an automobile to perform oxidation
and/or reduction reaction by a catalyst to reduce the emission of harmful
substances such as CO, HC, NOx, and PM in the exhaust gas.
3.9 Manifold catalytic converter for petrol vehicles (hereinafter
referred to as manifold catalytic converter)
A catalytic converter assembly component that is mounted in the engine
compartment of a petrol vehicle and consists of an engine exhaust manifold
and a catalytic converter, and the junction of each branch of the engine
manifold to the inlet end of the catalytic converter is not more than 400mm.
3.10 Under-floor catalytic converter for petrol vehicles (hereinafter
referred to as under-floor catalytic converter)
A catalytic converter assembly that is mounted under the petrol vehicle
chassis and at a distance of more than 400mm from the engine exhaust
manifold.
3.11 Aftertreatment devices for diesel vehicle exhaust
A device mounted in the exhaust system of a diesel engine that can reduce
the emission of pollutants in the exhaust gas through various physical and
chemical functions.
d) Other phenomena that affect normal use.
4.5 Vibration durability
4.5.1 The substrate shall be subjected to a thermal vibration test in
accordance with 5.3 of this Standard.
4.5.2 Before and after the thermal vibration test, the differential pressure of
the front and rear end faces under the substrate airspeed of (60,000±600)h-1
is measured at normal temperature, and the change of the differential
pressure value shall not exceed 15%.
4.5.3 After the thermal vibration test, the substrate shall not exhibit obvious
deformation of the honeycomb, falling off or detachment of the honeycombed
structure and the housing, severe deformation of the outer contour, and other
damages. Other forms of damage may be specified in detail by the
company's technical requirements.
4.6 Temperature shock durability
4.6.1 The substrate shall be subjected to a temperature shock test in
accordance with 5.4 of this Standard.
4.6.2 Before and after the temperature shock test, the differential pressure
of the front and rear end faces under the substrate airspeed of
(60,000±600)h-1 is measured at normal temperature, and the change of the
differential pressure value shall not exceed 15%.
4.6.3 After the temperature shock test, the substrate shall not exhibit
obvious deformation of the honeycomb, falling off or detachment of the
honeycombed structure and the housing, severe deformation of the outer
contour, and other damages. Other forms of damage may be specified in
detail by the company's technical requirements.
5 Test methods
5.1 General
5.1.1 Before the test, it shall be confirmed that the substrate is in a brand
new state in which the catalyst is not coated.
5.1.2 MEASURE, RECORD and CONFIRM that the initial state of the test
sample meets the specifications of 4.2.
5.1.3 According to the different classification categories of the substrate
application environment, there are differences in different types of test
conditions.
end faces of the substrate at the airspeed of (60,000±600)h-1 is measured at
normal temperature, and check the integrity of the substrate.
6 Inspection rules
6.1 Inspection category
The inspection of the substrate is divided into exit-factory inspection and type
inspection.
6.2 Exit-factory inspection
6.2.1 Each product shall be inspected at the factory before leaving the
factory, and shall be inspected by the quality inspection department of the
factory, and a certificate of conformity shall be issued.
6.2.2 The inspection items and requirements shall comply with the
provisions of 4.1 to 4.3.
6.3 Type inspection
In case of any of the following circumstances, the product shall be subject to
type inspection:
a) new product finalization;
b) continuously produced products, once every two years;
c) re-production when the production interval is more than one year;
d) when there are major changes in product design processes, materials,
etc.;
e) when there is a problem with the quality of the product; and
f) other time when it is deemed necessary.
6.3.1 Sampling method
The type inspection adopts random sampling. Three products are randomly
selected from the products qualified for exit-factory inspection, and the
sampling base is not less than 100.
6.3.2 Inspection item.
The test items as required in 4.4 to 4.6.
6.3.3 Determination rule.
6.3.3.1 The type inspection results shall comply with the corresponding
provisions of 4 Technical requirements.
6.3.3.2 In the type inspection, if any inspection item is unqualified, it shall be
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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