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YS/T 978-2014 English PDF

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YS/T 978-2014: Carbon/carbon composites guide shield of single crystal furnace
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PDF similar to YS/T 978-2014


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Basic data

Standard ID YS/T 978-2014 (YS/T978-2014)
Description (Translated English) Carbon/carbon composites guide shield of single crystal furnace
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H83
Classification of International Standard 29.045
Word Count Estimation 8,843
Date of Issue 10/14/2014
Date of Implementation 4/1/2015
Quoted Standard GB/T 1804; GB/T 2828.1; GB/T 22588; GB/T 24528; JY/T 015; QJ 2099; QJ 2509
Regulation (derived from) People's Republic of China Ministry of Industry and Information Technology Notice 2014 No. 63; Industry Standard Filing Notice 2014 No. 12 (Overall No. 180)
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This Standard specifies the Czochralski crystal furnace carbon/carbon composites draft tube of requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificates and orders (or contract) content. This Standard

YS/T 978-2014: Carbon/carbon composites guide shield of single crystal furnace

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Carbon/carbon composites guide shield of single crystal furnace ICS 29.045 H83 People's Republic of China Nonferrous Metals Industry Standard Crystal furnace carbon/carbon composite material guide tube Issued on. 2014-10-14 2015-04-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard drafting of the main unit. Hunan Coquimbo Composite Technology Co., Ltd., Xi'an Longji Silicon Materials Co., Ltd. The main drafters. Send Joe Liao, Li Jun, Zhou Jian Tan, Tai Weiping, Liding Wu, Yue - Jun Wang, Gong Yuliang, Zhou Rui, Chen Ying, LI Bing Ju, Shi Lei. Crystal furnace carbon/carbon composite material guide tube

1 Scope

This standard specifies the Czochralski crystal furnace carbon/carbon composites draft tube of requirements, test methods, inspection rules, marking, packaging, transportation, Storage, quality certificate and purchase order (or contract) content. This standard applies to Czochralski crystal furnace carbon/carbon composites draft tube.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance GB/T 2828.1 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch inspection sampling plan GB/T 22588 flash measurement of thermal diffusivity or thermal conductivity GB/T 24528 Carbon materials - Determination of bulk density JY/T 015 Inductively Coupled Plasma Atomic Emission Spectroscopy General QJ2099 three-fiber composites reinforced flexural properties QJ2509 carbon/carbon composite material ash content test method

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Draft tube guideshield Located above the single crystal furnace crucible, plays a direct gas flow, the heat shield, forming a single crystal growth temperature gradients, thermal conductivity as having Tapered cylindrical object used.

4 Requirements

4.1 Categories 4.1.1 carbon/carbon composite material according to their draft tube inner diameter of the small end of the cone into different specifications, which have a common specification code 235 (20in / 6.5in), 265 (22in/8in), etc. Figure 1 is a schematic view of the draft tube. Specification code in the "20in/6.5in" represented in parentheses after the 235 20in draft tube for thermal field of single crystal furnace single crystal rod pull 6.5in more appropriate. 4.1.2 The carbon/carbon composite material in the ash content of the draft tube, carbon/carbon composite material according to the purity of the draft tube is divided into primary and secondary level.