JB/T 4107.7-1999Methods for chemical analysis of electrical contact materials - Determination of carbon content in silver-graphite (gas volumetric method) (English PDF)
电触头材料化学分析方法 银石墨中碳含量的测定（气体容量法测定碳量）
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
August 6, 1999
Implementation date
January 1, 2000
Scope
JB/T 4107.7-1999 is the English-translated version of 电触头材料化学分析方法 银石墨中碳含量的测定（气体容量法测定碳量）.
JB/T 4107.7-1999 is the Chinese machinery industry standard covering methods for chemical analysis of electrical contact materials - Determination of carbon content in silver-graphite (gas volumetric method).
It was issued on 6 August 1999 and has been in force since 1 January 2000, as a first edition. The document is under the responsibility of the Ministry of Industry and Information Technology.
This page is published from the official record of the 1999 edition. The figures, limits and tables the standard contains are those of the document itself, delivered in full with the English translation.
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Document preview — JB/T 4107.7-1999
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- [Preview only]
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Type
- 3.2 Basic parameters
- 4 Types and basic parameters
- 4.1 Types
- 4.2 Model designation
- 4.3 Nominal operating conditions
- 4.4 Safety and hygiene
- 4.5 Welding
- 4.6 Bridge (After crane operation mechanism assembled)
- 4.7 Assembly
- 4.8 Electrical control equipment
- 4.9 Steel pretreatment and painting
- 5 Technical requirements
- 5.1 General requirements
- 5.2 Safety requirements
- 5.3 Cold and hot working forming
- 5.4 Rated load test
- 5.5 Whole machine noise test
- 5.6 Static rigidity test
- 5.7 Dynamic load test
- 5.8 Crane span deviation
- 5.9 Diagonal difference of bridge
- 6 Test methods
- 6.1 Exit-factory inspection
- 6.2 Type inspection
- 7 Inspection rules
- 7.1 Marking
- 7.2 Packaging, transportation and storage
- 7.3 Transportation
- 7.4 Storage
- 8 Marking, packaging, transportation and storage
- 9 标志和标签 9 Marking and labeling
1 Foreword
JB/T 4107.7-1999 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 6 August 1999.
It is one of 12 parts of the JB/T 4107 series.
The JB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.
2 Scope Preview
JB/T 4107.7-1999 carries no ICS number and no Chinese Standard Classification code.
This catalogue holds 21,922 other JB/T standards.
Of the 5,298 JB/T standards that do carry an ICS number, 1,460 (28%) fall under ICS 25, in the field of manufacturing engineering.
3 About this standard
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
English translation: about 15 pages
4 Related standards
Other parts of this standard:
JB/T 4107.1-1999 — General rules and general provisions
JB/T 4107.1-2014 — Part 1: General
JB/T 4107.2-1999 — Methods for chemical analysis of electrical contact materials - Determination of copper content in copper-tungsten (iodimetric method)
JB/T 4107.2-2014 — Part 2: Determination of copper content in copper-tungsten
JB/T 4107.3-2014 — Part 3: Determination of carbon content in silver-graphite
JB/T 4107.4-1999 — Methods for chemical analysis of electrical contact materials - Determination of silver content in silver-tungsten (iodimetric method)
JB/T 4107.4-2014 — Part 4: Determination of silver content in silver-tungsten
JB/T 4107.5-1999 — Methods for chemical analysis of electrical contact materials - Determination of nickel content in silver-nickel (EDTA volumetric method)
JB/T 4107.5-2014 — Part 5: Determination of nickel content in silver-nickel
JB/T 4107.6-1999 — Methods for chemical analysis of electrical contact materials - Determination of iron content in silver-iron (potassium dichromate method)
JB/T 4107.6-2014 — Part 6: Determination of iron content in silver-iron
Standards on related subjects:
JB/T 8987-2017 — Technical requirements for silver-copper alloy wires (strips) for commutators
GB/T 3217-2013 — Permanent magnet (magnetically hard) materials -- Methods of measurement of magnetic properties
GB/T 24270-2009 — Method of measurement of temperature coefficient of magnetic properties of permanent magnetic materials
5 Classification and status
Prefix JB/T: recommended standard.
......
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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Related Standards
JB/T 4107.6-1999 — Methods for chemical analysis of electrical contact materials - Determination of iron content in silver-iron (potassium dichromate method)
JB/T 4107.6-2014 — Methods for chemical analysis of electrical contact materials - Part 6: Determination of iron content in silver-iron
JB/T 4107.5-1999 — Methods for chemical analysis of electrical contact materials - Determination of nickel content in silver-nickel (EDTA volumetric method)
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JB/T 4107.7-1999
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