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GB/T 40738-2021: Investment casting - Technical specification for rapid shell build with colloidal silica binder
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 40738-2021 | English | 319 |
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Investment casting - Technical specification for rapid shell build with colloidal silica binder
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GB/T 40738-2021
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Basic data | Standard ID | GB/T 40738-2021 (GB/T40738-2021) | | Description (Translated English) | Investment casting - Technical specification for rapid shell build with colloidal silica binder | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J31 | | Word Count Estimation | 17,134 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40738-2021: Investment casting - Technical specification for rapid shell build with colloidal silica binder
---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.
Investment casting - Technical specification for rapid shell build with colloidal silica binder
ICS 75.140
CCSJ31
National Standards of People's Republic of China
Process specification for rapid shell making of investment casting silica sol
silicabinder
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document was proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54).
Drafting organizations of this document. Dongfeng Precision Casting Co., Ltd., Dongying Jiayang Precision Metal Co., Ltd., Shengli Xinda Industrial Group Co., Ltd.
Company, Shanghai Jiaotong University, Suzhou Taier Aerospace Materials Co., Ltd., Zhejiang Mihuang New Materials Co., Ltd., China Aviation Development South Industries Co., Ltd.
Company, Guizhou Anji Aviation Precision Casting Co., Ltd., Qingdao Xinnuoke New Material Technology Development Co., Ltd., Shenyang Foundry Research Institute Co., Ltd.
Company, Dongguan Dewei Casting Products Co., Ltd., Shandong Taiyi Metal Technology Co., Ltd.
The main drafters of this document. Ma Bo, Cai Huazhou, Wang Donghong, Wei Zhiyu, Duan Jidong, Hao Xin, Li Yi, Zhu Jiahui, Lan Yong, Zhang Yin, Li Rui,
Chi Liangong, Tao Jiadong, Song Shanshan, Wu Chao, Shao Bin, Wu Guangpeng, Wang Zheng, Zhong Quan, Zhang Lijun, Huang Hua.
Process specification for rapid shell making of investment casting silica sol
1 Scope
This document specifies the raw and auxiliary materials used in the rapid shell-making of investment casting silica sol, the technical requirements for the rapid shell-making process, and the inspection and testing methods.
This document is applicable to the selection, process formulation and process control of raw and auxiliary materials for rapid shell making of investment casting silica sol.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 5611 Casting Terminology
GB/T 11007 Conductivity meter test method
GB/T 11165 Laboratory pH Meter
GB/T 12214 Silica sand and powder for investment casting
GB/T 12215 Bauxite sand and powder for investment casting
GB/T 14235.1 Low-temperature mold materials for investment casting Part 1.Test methods for physical properties
GB/T 32251 Control of Pollutants in Investment Casting Process
HB5346 Silica Sol for Investment Casting
HB5347 Fused white corundum powder for investment casting
HG/T 2521 industrial silica sol
JB/T 9223 Zirconium sand and powder for foundry
JB/T 11733 Calcined kaolin sand powder for investment casting
3 Terms and definitions
The following terms and definitions defined in GB/T 5611 apply to this document.
3.1
Silicasol (coloidalsilica)
Binder for investment casting, and refractory powder to form coating for investment casting.
Note. Generally alkaline, with Na as stabilizer, molecular formula. mSiO2·nH2O.
3.2
Rapidlydriedsolsilicate
By modifying the microstructure of silica sol micelles, surface ion modification, adding water-soluble polymer materials or a combination of several measures, shrinking
Special silica sol varieties with short shell drying time.
3.3
Quick-drying agent
An auxiliary shell material that can shorten the drying time of the shell after adding silica sol coating, generally a water-soluble polymer material.
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