QC/T 200-2015Performance requirements and test methods for air reservoirs of air braking equipment of motor vehicles and trailers (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Directive for standardization - Part 1. Structure and drafting of standards".

This standard replaces QC/T 200-1995 (Performance requirements and test methods of reservoir for air brake equipment of automobile and trailer). As compared with QC/T 200-1995, the main technical changes are as follows.

- DEFINE the reservoir structural form to which this standard is applicable (SEE Chapter 1; Chapter 1 of 1995 version);

- ADD the strength requirements for multi-chamber reservoir baffles (SEE 3.2.2 and 5.1.2);

- ADD the sealing requirements for one-way valve between multi-chamber reservoir (SEE 3.3.2 and 5.2.2);

- MODIFY the test methods and evaluation methods for corrosion resistance (SEE 3.4 and 5.3; 3.4 of 1995 version);

- ADD the requirements for test samples and test equipment (SEE Chapter 4);

- DELETE the inspection rules, marking, packaging, transport and storage (SEE Chapters 4 and 5 of 1995 version).

1 Scope

This standard specifies the performance requirements and test methods for of reservoir for air brake equipment of automobiles and trailers.

This standard applies to the cylindrical metal body reservoir which is used for the air brake system of the automobiles and trailers; AND the reservoirs of other materials and structures may make reference to it.

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) are applicable to this Standard.

GB/T 9286-1998 Paints and varnishes - Cross cut test for films

GB/T 10125-1997 Corrosion tests in artificial atmospheres - Salt spray test

GB/T 10587 Specifications for salt mist testing chambers

3 Performance requirements

5 Test method

5.3.1.3 After the sample is placed at room temperature for 72 h, USE a single-blade cutting tool which complies with the requirements of clause 4.1 of GB/T 9286-1998 to cut a scratch penetrating to the painting layer at the tested surface of the sample in accordance with the manual cutting method as specified in clause 7.2 of GB/T 9286-1998. The distance from the scratch to the edge of the sample shall be greater than 20 mm.

5.3.1.4 USE a soft brush to clean the sample along the scratch direction for several times, to remove all the cutting chips from the scratch.