GB/T 4698.14-2011 English PDF

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GB/T 4698.14-2011: Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Determination of carbon content
Status: Valid

GB/T 4698.14: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4698.14-2011	169	Add to Cart	3 days	Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Determination of carbon content	Valid
GB/T 4698.14-1996	199	Add to Cart	2 days	Sponge titanium, titanium and titanium alloys--Determination of carbon content--Combustion coulometric method	Obsolete
GB/T 4698.14-1984	RFQ	ASK	3 days	Methods for chemical analysis of titanium and titanium alloys--The combustion-coulometric method for the determination of carbon content	Obsolete

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Basic data

Standard ID: GB/T 4698.14-2011 (GB/T4698.14-2011)
Description (Translated English): Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Determination of carbon content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H64
Classification of International Standard: 77.120.50
Word Count Estimation: 7,717
Date of Issue: 2011-05-12
Date of Implementation: 2012-02-01
Older Standard (superseded by this standard): GB/T 4698.14-1996
Regulation (derived from): Announcement of Newly Approved National Standards No. 6 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the frequency combustion infrared absorption method for the determination of titanium sponge, titanium and titanium carbon content. This section applies to sponge titanium, titanium and titanium alloy side fixed carbon content. Measuring range: 0. 004% ~ 0. 100%

GB/T 4698.14-2011: Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Determination of carbon content

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of titanium sponge, titanium and titanium alloys. Determination of carbon content ICS 77.120.50 H64 National Standards of People's Republic of China Replacing GB/T 4698.14-1996 Sponge titanium, titanium and titanium alloys The determination of carbon content Methodsforchemicalanalysisoftitaniumsponge, titaniumandtitaniumaloys- Issued on. 2011-05-12 2012-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This Part replaces GB/T 4698.14-1996 "Determination of the amount of carbon sponge titanium, titanium and titanium alloys coulometric method." This portion of the GB/T 4698.14-1996 compared to the main changes are as follows. --- By the Coulomb law to high frequency combustion - infrared absorption method; --- Measurement range 0.005% to 0.30% by the adjustment of 0.004% to 0.100%; --- Increasing the precision of the terms, complements the quality assurance and control provisions. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is drafted. Northwest Nonferrous Metal Research Institute, Baoji Titanium Group Co., Ltd., Beijing Nonferrous Metal Research Institute, Sichuan Heng is made of titanium Division Technology Limited. The main drafters of this section. Bo, Wang Hui, Liang Shizhong red, Aijian Ling, ZHU Guang Road, Zhou Hai income, Wang Hongbin, Song Xiao force, Li Jian, Ying Lin. This part of the standard replaces the previous editions are. --- GB/T 4698.14-1984; --- GB/T 4698.14-1996. Sponge titanium, titanium and titanium alloys The determination of carbon content

1 Scope

This section provides a high-frequency combustion - infrared absorption method for the determination of titanium sponge, titanium and titanium carbon content. This section applies to titanium, titanium sponge and titanium alloy carbon content. Measurement range. 0.004% to 0.100%.

2 principle of the method

In an oxygen atmosphere, the carbon in the sample is oxidized in a high frequency induction furnace to carbon monoxide or carbon dioxide, a mixed gas with a carrier gas into the red Detected outside the pool, with the titanium material standard/sample curve established for comparison, the measured carbon content of the sample.

3 Reagents and materials

3.1 acetone or other organic solvents. 3.2 Copper flux (wC≤0.0005%). 3.3 iron flux (wC≤0.0008%). 3.4 tin flux (wC≤0.0005%). 3.5 Tungsten cosolvent (wC≤0.0010%). 3.6 magnesium perchlorate. 3.7 alkali asbestos. 3.8 rare earth copper oxide. 3.9 platinized silica gel. Oxygen 3.10 (volume fraction ≥99.95%). 3.11 Titanium standard material/samples. 3.12 crucible and the crucible cover. in a muffle furnace 700 ℃ ~ 800 ℃ 2h or burned at least 900 ℃ ~ 1000 ℃ burning at least 1h, burning Burnt crucible and the crucible cover if not used within 4h, the need to re-ignition before the next use. Ignited crucible and the crucible lid cooling Desiccator to room temperature after use.

4 Instrument

4.1 high-frequency furnace, vacuum devices, carrier gas purification system, analysis of the gas conversion system, infrared detection system. 4.2 oxygen cylinders and regulators. 4.3 porcelain crucible and the crucible lid, the crucible covered with holes. 4.4 crucible tongs. 4.5 Balances. 4.6 muffle furnace. ......

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