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GB/T 36516-2018Fe-Cr-Al wire and fiber for automotive purification filter (English PDF)

机动车净化过滤器用铁铬铝纤维丝

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 13, 2018

Implementation date

April 1, 2019

Scope

GB/T 36516-2018 is the English-translated version of 机动车净化过滤器用铁铬铝纤维丝.

GB/T 36516-2018 covers iron-chromium-aluminium (Fe-Cr-Al) wire and fibre for automotive purification filters. It applies to the wire and fibre that go into the metal fibre felts of diesel particulate filters (DPF), and also to those used for metal fibre felts or woven meshes in the chemical, petroleum and gas industries.

The standard sets out designations, sizes and weights, technical requirements, test methods, inspection rules, packaging, marking and the quality certificate, and defines terms such as fibre, bundle drawing, monofilament drawing, breaking strength force and oxidative gain value.

Its test methods include chemical analysis under the GB/T 223 series and YS/T 904, tensile tests to GB/T 228.1 for wire and on a monofilament strength tester for fibre, resistivity, oxidation resistance, grain size and a visual surface check. It was issued on 13 July 2018 and has applied since 1 April 2019.

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Document preview — GB/T 36516-2018

National Standard of the People's Republic of China

ICS: 77.140.99
Classification: H 58

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword3
1 Scope4
2 Normative references4
3 Terms and definitions6
4 Order content7
5 Size and weight8
6 Technical requirements9
7 Test method11
8 Inspection rules13
9 Packaging, marking and quality certificate14
Appendix A (Informative) Other physical properties and typical mechanical properties of wire16

1 Scope

This standard specifies the designations, sizes and weights, technical requirements, test methods, inspection rules, packaging, markings, quality certificates of Fe-Cr-Al wire and fiber for automotive purification filter.

This standard applies to Fe-Cr-Al wire and fiber materials for metal fiber felts of diesel engine exhaust particulate filter (DPF). It also applies to Fe-Cr-Al wire and fiber materials for metal fiber felts or woven meshes in the chemical, petroleum, gas industries (hereinafter referred to as wire and fiber).

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 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method

GB/T 223.8 Methods for chemical analysis of iron, steel and alloy - The sodium fluoride separation-EDTA titration for the determination of aluminum content

GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method

GB/T 223.17 Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane photometric method for the determination of titanium content

GB/T 223.19 Methods for chemical analysis of iron, steel and alloy - The neocuproine-chloroform extraction photometric method for the determination of copper content

GB/T 223.30 Methods for chemical analysis of iron, steel and alloy - The arsenazo III spectrophotometric method for the determination of zirconium content after separation by p-bromomandelic acid

GB/T 223.33 Methods for chemical analysis of iron, steel and alloy - The chlorophosphonazo mA photometric method for the determination of cerium content after extraction separation

GB/T 223.37 Methods for chemical analysis of iron, steel and alloy - The indophenol blue photometric methods for the determination of nitrogen content after distillation separation

GB/T 223.40 Iron, steel and alloy - Determination of niobium content by the sulphochlorophenol S spectrophotometric method

GB/T 223.49 Methods for chemical analysis of iron, steel and alloy - Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content

GB/T 223.59 Iron, steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method

GB/T 223.64 Iron, steel and alloy - Determination of manganese content - Flame atomic absorption spectrometric method

GB/T 223.79 Iron and steel - Determination of multi-element contents - X-ray fluorescence spectrometry (Routine method)

GB/T 223.85 Steel and iron - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace

GB/T 223.86 Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace

GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature

GB/T 6146 Test method for resistivity of precision resistance alloys

GB/T 6394 Metal - Methods for estimating the average grain size

GB/T 11170 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (Routine method)

GB/T 11261 Steel and iron - Determination of oxygen content - The pulse heating inert gas fusion-infra-red absorption method

GB/T 13303 Steels - Determination method of oxidation resistance

GB/T 20066 Steel and iron - Sampling and preparation of samples

3 Terms and definitions

3.2 Fiber

Filaments with a nominal wire diameter below 0.1 mm.

3.3 Bundle drawing

A processing method of wrapping multiple wires into a metal sleeve while drawing through a die hole, then removing the sleeve layer to obtain a core wire.

3.4 Monofilament drawing

Processing method of drawing a single wire through a die hole to a desired wire diameter.

3.5 Monofilament axial

A state where a single metal wire is wound around a reel.

3.6 Multi-strand bundle

A state where plurality of metal fibers form a bundle wound around a reel.

3.7 Breaking strength force

Breaking force when fiber filaments are stretched.

3.8 Oxidative gain value

The increase in the unit oxidation weight of a metal at high temperatures.

4 Order content

A contract or order placed under this standard shall include the following:

a) This standard number; […]

7 Test method

7.2.2 Fiber

The chemical composition analysis and sampling of the fiber shall be conducted in accordance with the provisions of GB/T 20066. The chemical composition analysis of the fiber is carried out according to the specifications of YS/T 904.1 ~ 904.5 series standards.

7.3 Mechanical properties

7.3.1 Wire

Cut a segment of wire from the end of the wire where it is more than 300 mm. The test method is performed in accordance with GB/T 228.1.

7.3.2 Fiber

Cut a segment of fiber from the end of the fiber where it is more than 300 mm.

Use a monofilament strength tester which has a range of 100 cN to clamp it individually. Perform testing at the clamping length of 20 mm and the tensile rate of 10 mm/min. 30 pieces form a group. Take the average value, to obtain the breaking strength force and elongation at break of the fiber.

7.4 Resistivity

The method of measuring the electrical resistivity of the wire is performed in accordance with GB/T 6146.

7.5 Antioxidation test

The test method for the oxidation resistance of the fiber is carried out in accordance with GB/T 13303.

7.6 Grain size

The grain size testing shall be carried out in accordance with GB/T 6394.

7.7 Surface quality

The surface quality of the fibers and wires are checked visually. If necessary, the fiber can be inspected by a magnifying glass larger than 10 times.

8 Inspection rules

8.2.1.3 When the type inspection is carried out according to the provisions of Table 9, if a certain inspection fails, the axial wire or fiber is judged as unqualified. It is allowed to cut the double number of samples from the untested fibers and wires for re-inspection. If one of the re-inspection results fails, the type inspection will not pass.

8.2.2 Exit-factory inspection

8.2.2.1 Group-batching rules

8.2.2.1.1 Wire shall be inspected and accepted in batches. Each batch consists of wires of the same designation, the same furnace number, the same specification, the same state.

8.2.2.1.2 The fiber shall be inspected and accepted in batches. The group-batching rules shall be determined by the supplier and the purchaser through consultation.

8.2.2.2 Sampling location and quantity

The sampling quantity and sampling location of each batch of fiber and wire shall meet the requirements of Table 9.

8.2.2.3 Reinspection and determination rules

If one of the wire or fiber inspection results fails, the axial is judged as unqualified. It is allowed to take double number of samples from the batch of untested fibers and wire axial to retest the unqualified items. If the retest results are still unsatisfactory, the batch of wires or fibers is deemed unqualified.

However, it is allowed to inspect the unqualified wire or fiber from axis to axis; the qualified ones will be delivered.

9 Packaging, marking and quality certificate

9.1 The wire is wrapped by a plastic shaft; it is packaged by a moisture-proof heat shrinkable film. The marking and quality certificate shall comply with the provisions of YB/T 5242.

9.2 The fiber shall be packed in double-layer plastic bags or paper core rolls, plus moisture-proof heat shrinkable film packaging. The fiber bundle is wound […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Normative references

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