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GB/T 30709-2014 English PDF

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GB/T 30709-2014: Standard test method for compressibility and recovery of laminated composite gasket materials
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Basic data

Standard ID GB/T 30709-2014 (GB/T30709-2014)
Description (Translated English) Standard test method for compressibility and recovery of laminated composite gasket materials
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q69
Classification of International Standard 23.100.60
Word Count Estimation 6,695
Date of Issue 6/9/2014
Date of Implementation 12/1/2014
Quoted Standard GB/T 20671.1-2006
Regulation (derived from) National Standards Bulletin No. 11 of 2014
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 laminated composite gasket material (two or more chemically distinct material laminated composite together) Determination of short-term compression and rebound rates at room temperature. This Standard applies to laminated compo

GB/T 30709-2014: Standard test method for compressibility and recovery of laminated composite gasket materials


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Standard test method for compressibility and recovery of laminated composite gasket materials ICS 23.100.60 Q69 National Standards of People's Republic of China Laminated composite gasket material compression ratio And rebound test method Issued on. 2014-06-09 2014-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Building Materials Federation. The standard and non-metallic mineral products by the National Standardization Technical Committee (SAC/TC406) centralized. This standard was drafted. Zhoushan seamounts sealed Material Co., Ltd. Xianyang non-metallic mineral research institute, the National Non-metallic Minerals Products Quality Supervision and Inspection Center, Nanyang Tianyi seal Co., Liangshan Auto Parts Manufacturing Co. riders. The main drafters of this standard. HEZE Shizhong Tang, Hou Choi Hung, Chen Yuxiang, Zhang Zhongdong, Du Ming, Yao Bin Yuan. Laminated composite gasket material compression ratio And rebound test method

1 Scope

This standard specifies the laminated composite gasket material (two or more chemically distinct material laminated composite together) at room temperature for a short time Determination of compression rate and rebound rate. This standard applies to laminated composite gasket material. This standard does not apply to long-term under pressure laminated composite gasket material compression ratio (usually Referred to as "creep") or spring rate (the opposite is usually referred to as "compression set") test, also did not consider the situation in a non-room temperature test.

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 20671.1-2006 non-metallic materials Classification system and test methods - Part 1 Gasket. non-metallic gasket materials classification system

3 test device

The test device consists of the following components. a) pressure head. the bottom of hardened and polished steel cylinder, depending on the type of material being measured and the provisions of different diameters (error Within ± 0.02mm). Various types of laminated composite gasket material applies pressure head diameter shown in Table 1. b) dial gauge. the test specimen thickness of a display or a few indicator, dividing the value of not more than 0.02mm, the readings should be read accurately estimate To 0.002mm. c) First load device. First load should be included in the predetermined value ± 1% or less of the weight of the head and additional weight errors. First load of 22.2N. d) Main load device. applying a predetermined load to the master device indenter. The counterweight means may be formed, hydraulic cylinder, pneumatic cylinder or other It provides the main load device component. Its slow loading rate should be uniform, accuracy of ± 1%. Main load shall be applied to a prescribed First load on. Different types of laminated composite gasket material applicable to the main load as shown in Table 1. Table 1 test load regulation and laminated composite gasket material Non-metal layer gasket Type of material GB/T 20671.1 Six basic classification system The first two codes Code Adjustment Program Head diameter mm Load Load Total load (First, the main load Sum) N MPa Roll asbestos Asbestos Beater Flexible graphite F11 F12 F51, F52 100 ℃ ± 2 ℃ under the baking 1h, placed containing chloride anhydrous Calcium dryer cooled to 21 ℃ ~ 30 ℃ 10,901,112 6.4 22.2 34.5

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