GB/T 12215-2019 PDF English
US$199.00 · In stock · Download in 9 secondsGB/T 12215-2019: Bauxite sand and flour for investment casting Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 12215: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 12215-2019 | English | 199 |
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3 days
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Bauxite sand and flour for investment casting
| Valid |
| GB/T 12215-1990 | English | 239 |
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3 days
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Bauxite sand and flour for investment casting
| Obsolete |
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GB/T 12215-2019: Bauxite sand and flour for investment casting---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT12215-2019
(Bauxite sand and powder for investment casting)
ICS 91.100.15
J31
National Standards of People's Republic of China
Replace GB/T 12215-1990
Bauxite sand and powder for investment casting
Bauxitesandandflourforinvestmentcasting
Published on.2019-08-30
2020-03-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 12215-1990 "aluminum bauxite sand and powder for investment casting". This standard is compared with GB/T 12215-1990.
The main technical content changes are as follows.
--- Revised the definition of bauxite sand and bauxite powder for investment casting (see 3.1, 3.2,.1990, 3.1, 3.2);
--- Revised the definition of bauxite sand fines (see 3.3, 3.6 of the.1990 edition);
--- Removed weight average particle size, weight mean square error, total surface area of 100 grams of powder (1990 version 3.3, 3.4, 3.5);
--- Revised the harmful impurities content of bauxite clinker (see 4.2.1, 4.2.1 of the.1990 edition);
--- Revised the fine content of bauxite sand (see 5.3,.1990 edition of 5.3) and its detection method (see 6.3, 6.3 of.1990 edition);
--- Increased the partial grouping code of the alumina bauxite grain size (see 4.3.1);
--- Revised the particle size grouping of alumina bauxite powder and its indicators (see 4.3.2, version 4.3.2 of.1990);
--- Revised the representation method of the bauxite sand grade (see 4.4.1, version 4.4.1 of the.1990 edition);
--- Increased the standard number and date of manufacture in the bag logo (see 8.2).
This standard is proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54).
This standard was drafted. First Tractor Co., Ltd., Dongying Jiayang Precision Metal Co., Ltd., Dongfeng Precision Casting Co., Ltd.
Anhui Yingliu Hangyuan Power Technology Co., Ltd., Guizhou Anji Aviation Precision Casting Co., Ltd., Zhengzhou Xiangyu Foundry Materials Co., Ltd.
Henan Jinnyuan New Material Technology Co., Ltd., Shanghai Honggang Power Station Equipment Casting & Forging Co., Ltd., Shenyang Foundry Research Institute Co., Ltd.
The main drafters of this standard. Li Fengjun, Guo Yahui, Wang Shijie, Wei Zhiyu, Ma Bo, Wang Yonghua, Lan Yong, Chu Dezhi, Xu Haizhen, Feng Yinping,
Zhang Xin, Xu Hongli, Duan Jidong, Li Xinglong, Cao Debing, Tian Chao, Wang Zheng, Zhu Jianwei, Kang Xiao, Chen Qun, Cheng Nan, Wu Tieming, Xu Demin, Wang Ting.
The previous versions of the standards replaced by this standard are.
---GB/T 12215-1990.
Bauxite sand and powder for investment casting
1 Scope
This standard specifies the terms and definitions of aluminum bauxite sand and powder for investment casting, classification, classification, grouping and grades, technical requirements, test methods.
Law, inspection rules, packaging and storage.
This standard applies to aluminum bauxite sand and powder for investment casting.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2684 casting sand and mixture test method
GB/T 5611 casting terminology
GB/T 6900 Aluminum-silicon refractory chemical analysis method
GB/T 7322 refractory test method for refractory
3 Terms and definitions
The following terms and definitions as defined in GB/T 5611 apply to this document.
3.1
Investment in aluminum bauxite sand bauxitesandforinvestmentcasting
Refractory particles containing Al2O3 as the main component and having an Al2O3 content of not less than 65% and a particle diameter of 0.075 mm to 3.350 mm.
3.2
Bauxiteflourforvestmentcasting for investment casting
A refractory particulate material having Al2O3 as a main component and an Al2O3 content of not less than 65% and a particle diameter of 0.075 mm or less.
3.3
Fine powder content
The mass of the particles having a particle diameter greater than or equal to 0.020 mm and less than 0.075 mm is a percentage of the total mass of the sand sample.
4 Classification, classification, grouping and branding
4.1 Classification
The bauxite sand and powder are classified according to the main crystal phase after calcination, as shown in Table 1.
Table 1 Classification of main crystal phase after calcination of bauxite sand and powder
Serial number classification main crystal phase /% refractoriness/°C
1 Alumina bauxite clinker corundum mullite ≥90 ≥1770
2 bauxite composite mullite ≥80 ≥1790
GB/T 12215-2019
(Bauxite sand and powder for investment casting)
ICS 91.100.15
J31
National Standards of People's Republic of China
Replace GB/T 12215-1990
Bauxite sand and powder for investment casting
Bauxitesandandflourforinvestmentcasting
Published on.2019-08-30
2020-03-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 12215-1990 "aluminum bauxite sand and powder for investment casting". This standard is compared with GB/T 12215-1990.
The main technical content changes are as follows.
--- Revised the definition of bauxite sand and bauxite powder for investment casting (see 3.1, 3.2,.1990, 3.1, 3.2);
--- Revised the definition of bauxite sand fines (see 3.3, 3.6 of the.1990 edition);
--- Removed weight average particle size, weight mean square error, total surface area of 100 grams of powder (1990 version 3.3, 3.4, 3.5);
--- Revised the harmful impurities content of bauxite clinker (see 4.2.1, 4.2.1 of the.1990 edition);
--- Revised the fine content of bauxite sand (see 5.3,.1990 edition of 5.3) and its detection method (see 6.3, 6.3 of.1990 edition);
--- Increased the partial grouping code of the alumina bauxite grain size (see 4.3.1);
--- Revised the particle size grouping of alumina bauxite powder and its indicators (see 4.3.2, version 4.3.2 of.1990);
--- Revised the representation method of the bauxite sand grade (see 4.4.1, version 4.4.1 of the.1990 edition);
--- Increased the standard number and date of manufacture in the bag logo (see 8.2).
This standard is proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54).
This standard was drafted. First Tractor Co., Ltd., Dongying Jiayang Precision Metal Co., Ltd., Dongfeng Precision Casting Co., Ltd.
Anhui Yingliu Hangyuan Power Technology Co., Ltd., Guizhou Anji Aviation Precision Casting Co., Ltd., Zhengzhou Xiangyu Foundry Materials Co., Ltd.
Henan Jinnyuan New Material Technology Co., Ltd., Shanghai Honggang Power Station Equipment Casting & Forging Co., Ltd., Shenyang Foundry Research Institute Co., Ltd.
The main drafters of this standard. Li Fengjun, Guo Yahui, Wang Shijie, Wei Zhiyu, Ma Bo, Wang Yonghua, Lan Yong, Chu Dezhi, Xu Haizhen, Feng Yinping,
Zhang Xin, Xu Hongli, Duan Jidong, Li Xinglong, Cao Debing, Tian Chao, Wang Zheng, Zhu Jianwei, Kang Xiao, Chen Qun, Cheng Nan, Wu Tieming, Xu Demin, Wang Ting.
The previous versions of the standards replaced by this standard are.
---GB/T 12215-1990.
Bauxite sand and powder for investment casting
1 Scope
This standard specifies the terms and definitions of aluminum bauxite sand and powder for investment casting, classification, classification, grouping and grades, technical requirements, test methods.
Law, inspection rules, packaging and storage.
This standard applies to aluminum bauxite sand and powder for investment casting.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2684 casting sand and mixture test method
GB/T 5611 casting terminology
GB/T 6900 Aluminum-silicon refractory chemical analysis method
GB/T 7322 refractory test method for refractory
3 Terms and definitions
The following terms and definitions as defined in GB/T 5611 apply to this document.
3.1
Investment in aluminum bauxite sand bauxitesandforinvestmentcasting
Refractory particles containing Al2O3 as the main component and having an Al2O3 content of not less than 65% and a particle diameter of 0.075 mm to 3.350 mm.
3.2
Bauxiteflourforvestmentcasting for investment casting
A refractory particulate material having Al2O3 as a main component and an Al2O3 content of not less than 65% and a particle diameter of 0.075 mm or less.
3.3
Fine powder content
The mass of the particles having a particle diameter greater than or equal to 0.020 mm and less than 0.075 mm is a percentage of the total mass of the sand sample.
4 Classification, classification, grouping and branding
4.1 Classification
The bauxite sand and powder are classified according to the main crystal phase after calcination, as shown in Table 1.
Table 1 Classification of main crystal phase after calcination of bauxite sand and powder
Serial number classification main crystal phase /% refractoriness/°C
1 Alumina bauxite clinker corundum mullite ≥90 ≥1770
2 bauxite composite mullite ≥80 ≥1790
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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