|
US$559.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 3044-2020: Chemical analysis methods for white fused alumina and pink fused alumina
Status: Valid GB/T 3044: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3044-2020 | English | 559 |
Add to Cart
|
5 days [Need to translate]
|
Chemical analysis methods for white fused alumina and pink fused alumina
| Valid |
GB/T 3044-2020
|
| GB/T 3044-2007 | English | 799 |
Add to Cart
|
4 days [Need to translate]
|
Chemical analysis methods for white fused alumina and pink fused alumina
| Obsolete |
GB/T 3044-2007
|
| GB/T 3044-1989 | English | 479 |
Add to Cart
|
4 days [Need to translate]
|
Chemical analysis methods for white fused alumina and pink fused alumina
| Obsolete |
GB/T 3044-1989
|
PDF similar to GB/T 3044-2020
Basic data | Standard ID | GB/T 3044-2020 (GB/T3044-2020) | | Description (Translated English) | Chemical analysis methods for white fused alumina and pink fused alumina | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J43 | | Classification of International Standard | 25.100.70 | | Word Count Estimation | 30,377 | | Date of Issue | 2020-07-21 | | Date of Implementation | 2021-02-01 | | Older Standard (superseded by this standard) | GB/T 3044-2007 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 3044-2020: Chemical analysis methods for white fused alumina and pink fused alumina---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.
Chemical analysis methods for white fused alumina and pink fused alumina
ICS 25.100.70
J43
National Standards of People's Republic of China
Replace GB/T 3044-2007
Chemical analysis method of white corundum and chromium corundum
2020-07-21 released
2021-02-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Preparation of analysis samples 1
4 Determination of burning loss (or burning increase) 1
5 Determination of silica 2
6 Determination of iron trioxide 5
7 Determination of potassium oxide and sodium oxide 7
8 Determination of chromium trioxide 10
9 Determination of calcium oxide (atomic absorption spectrophotometry) 13
10 Determination of Magnesium Oxide (Atomic Absorption Spectrophotometry) 15
11 X-ray fluorescence spectroscopy (melting cast glass method) 16
12 Inductively coupled plasma atomic emission spectrometry analysis 20
13 Determination of aluminum oxide 23
14 Test report 26
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3044-2007 "White corundum, chromium corundum chemical analysis method", compared with GB/T 3044-2007, mainly
The technical changes are as follows.
---Modified the preparation of analysis samples (see Chapter 3, Chapter 3 of the.2007 edition);
---Added the sulfosalicylic acid colorimetric method for the determination of iron trioxide (see 6.2);
--- Added X-ray fluorescence spectroscopy (melting cast glass method) (see Chapter 11);
---Added inductively coupled plasma atomic emission spectrometry (see Chapter 12).
This standard was proposed by China Machinery Industry Federation.
This standard is under the jurisdiction of the National Abrasives Standardization Technical Committee (SAC/TC139).
Drafting organizations of this standard. Zhengzhou Abrasives Grinding Research Institute Co., Ltd., Zhengzhou Yufa Advanced Materials Co., Ltd., Zibo Jinjiyuan Research Institute
Abrasives Co., Ltd., Shandong Luxin Sisha Taishan Abrasives Co., Ltd.
The main drafters of this standard. Zhang Yi, Chen Xuebin, He Shizun, Ding Jianping, Xu Jifeng, Zhang Linzhou, Yuan Quanzhong, Ding Jie, Wang Min.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 3044-1989, GB/T 3044-2007.
Chemical analysis method of white corundum and chromium corundum
1 Scope
This standard specifies the burning loss (or burning increase) in white corundum, chromium corundum abrasives and crystal blocks, silicon dioxide, iron trioxide, potassium oxide, oxidation
Methods for determination of sodium, chromium oxide, calcium oxide, magnesium oxide, and aluminum oxide.
This standard applies to the determination of the chemical composition of white corundum, chromium corundum abrasives and crystal blocks.
This standard does not apply to products whose composition changes after use.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 4676 Common abrasive sampling method
3 Preparation of analysis samples
3.1 Crystal block sample
Take a statistically representative crystal block, crush it to completely pass through a screen with a basic mesh size of 2mm, and use a magnet (each magnetic pole
The magnetic flux is 3.5×10-2mWb~4.5×10-2mWb, the difference between the magnetic flux of the two magnetic poles is not more than 0.3×10-2mWb) Suction and remove the powder
Iron brought in from the broken pieces. Mix evenly and reduce to 10g~20g by quarter method. Continue to grind with a corundum mortar until all of it passes through the mesh
Screen with a size of 106 μm. Mix well, put it into the sample bag, dry it in an oven at 105℃~110℃ for 1h, take it out, and put it in a desiccator
Medium, cool for later use.
3.2 Abrasive samples
Sampling and reduction are carried out in accordance with GB/T 4676.
Abrasives with a particle size greater than 106μm are first reduced to 10g~20g, and then finely ground with a corundum mortar until the basic size of the mesh is 106μm.
Mix the sieve evenly, put it into the sample bag, dry it in an oven at 105℃~110℃ for 1h, take it out, put it in a desiccator, and cool it for later use.
Abrasives with a particle size of not more than 106μm are reduced to 10g~20g, put into a sample bag, and dried in an oven at 105℃~110℃ for 1h.
Take it out, put it in a desiccator, and cool it for later use.
4 Determination of burning loss (or burning increase)
4.1 Analysis steps
Weigh about 1g of the sample, accurate to 0.0001g, and put it into a platinum crucible previously burned to a constant weight in a high-temperature furnace at 1100℃, and write down the crucible
Add the mass of the sample, slightly lift the lid, place it in a high temperature furnace at 1100°C and burn it for 1 hour, take it out, cool it in a desiccator, weigh it, and burn it repeatedly to
Constant weight, the holding time for repeated burning is 20min.
4.2 Calculation of analysis results
The mass fraction w(A) of burning loss, expressed in %, is calculated according to formula (1).
|