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GB/T 4909.9-2009Test methods for bare wires - Part 9: Test for continuity of coating - Sodium polysulfide solution method (English PDF)

裸电线试验方法第9部分：镀层连续性试验多硫化钠法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 19, 2009

Implementation date

December 1, 2009

Scope

GB/T 4909.9-2009 is the English-translated version of 裸电线试验方法第9部分：镀层连续性试验多硫化钠法.

GB/T 4909.9-2009 is the Chinese standard "Test methods for bare wires - Part 9: Test for continuity of coating - Sodium polysulfide solution method".

Its scope clause reads: GB/T 4909 provisions of this part of the test equipment and more sodium sulfide coating continuity test, sample preparation, measurement procedures, test results Evaluation of fruit and the like.

This section applies to test wire and cable copper conductor surface of the metal layer (such as tin, silver, nickel layer or the like) continuity. This portion of the GB/T 4909.10-2009 having equivalent effect, but no matter what method should meet product standards for metal plating Provisions layer requirements shall prevail.

This section should be used in conjunction with the GB/T 4909.1-2009. Its clauses include test equipment; sample preparation; test procedure.

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Document preview — GB/T 4909.9-2009

National Standard of the People's Republic of China

ICS: 29.060.10
Classification: K 11
Replacing: GB 4909.9-1985

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

1 Scope
2 Normative references
3 Test Equipment
4 Sample Preparation
5 test procedure

1 Scope

GB/T 4909 provisions of this part of the test equipment and more sodium sulfide coating continuity test, sample preparation, measurement procedures, test results

Evaluation of fruit and the like.

This section applies to test wire and cable copper conductor surface of the metal layer (such as tin, silver, nickel layer or the like) continuity.

This portion of the GB/T 4909.10-2009 having equivalent effect, but no matter what method should meet product standards for metal plating

Provisions layer requirements shall prevail.

This section should be used in conjunction with the GB/T 4909.1-2009.

2 Normative references

The following documents contain provisions which, through reference to GB/T 4909 to the present, constitute provisions of this section. For dated reference documents

Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section

Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 4909.1-2009 Test methods for bare wires - Part 1. General

GB/T 4909.10-2009 Test methods for bare wires - Part 10. Test for continuity of coating method --- ammonium persulfate

3 Test Equipment

--- Glass cylinder 250mL;

--- Chemically pure hydrochloric acid;

--- Sodium sulfide chemically pure;

--- Sulfur chemically pure;

--- Ethanol or diethyl ether.

4 Sample Preparation

4.1 Sampling

Samples shall be eight units of product packaging (circle or disc), with a length of about 150mm interception of a sample from each of a packaging unit.

4.2 Pretreatment

The sample is immersed in an appropriate organic solvent such as ethanol or ether like cleaning, at least 3min. After removal with a clean soft cloth to wipe dry.

The sample was pretreated in a clean container, waiting for trial. While handling the sample should not touch the sample is immersed in the test solution

That section, and pay attention to prevent damage to the surface of the specimen.

5 test procedure

5.1 Preparation of the hydrochloric acid solution

Diluted chemically pure hydrochloric acid and distilled water, the resulting solution of hydrochloric acid at 16 °C when the specific gravity test was 1.088.

Hydrochloric acid solution (180 mL of) tinned copper for each test in Table 1, after a predetermined number of samples immersed two cycles, the loss should be

Aging treatment.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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Editions of GB/T 4909.9

Edition	Title	Revision	Status
GB/T 4909.9-2009	Test methods for bare wires - Part 9: Test for continuity of coating - Sodium polysulfide solution method	current edition	Current
GB 4909.9-1985	Test methods for bare wires - Part 9: Test for continuity of coating - Sodium polysulfide solution method	previous edition	Superseded

This page sells the current edition, GB/T 4909.9-2009. Earlier editions are listed for reference only.

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