GB/T 11108-2017 English PDF

US$119.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 11108-2017: Test method for thermal diffusivity of hard metal
Status: Valid

GB/T 11108: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11108-2017	119	Add to Cart	3 days	Test method for thermal diffusivity of hard metal	Valid
GB/T 11108-1989	159	Add to Cart	2 days	Test method for thermal diffusivity of hardmetal (carbide)	Obsolete

Similar standards

GB/T 5124.4   GB/T 3850   GB/T 5158.4   GB/T 11106   GB/T 11105   

Basic data

Standard ID: GB/T 11108-2017 (GB/T11108-2017)
Description (Translated English): Test method for thermal diffusivity of hard metal
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H16
Classification of International Standard: 77.160
Word Count Estimation: 6,680
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
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

GB/T 11108-2017: Test method for thermal diffusivity of hard metal

---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.
Test method for thermal diffusivity of hardmetal ICS 77.160 H16 National Standards of People's Republic of China Replacing GB/T 11108-1989 Determination of thermal diffusivity of cemented carbide 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 11108-1989 "Determination of cemented carbide thermal diffusivity." This standard compared with GB/T 11108-1989, the main changes are as follows. --- Modify Figure 1; --- Remove the 1989 format (6) and the following notes; --- Added symbols and definitions chapter; --- Revised sample preparation requirements; --- Increase the sample before the start of treatment work; --- Removed the 1989 edition of Chapter 6 calibration; --- Modify the test report content; --- Edit some of the text changes. This standard is proposed by China Nonferrous Metals Industry Association. This standard by the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized. This standard is drafted by. Central South University Institute of Powder Metallurgy, Zhuzhou Cemented Carbide Group Co., Ltd., Chongyi Zhangyuan tungsten shares Co., Ltd., Shenzhen Note into Technology Co., Ltd.. The main drafters of this standard. Huang Zhifeng, Wang Shouren, Zheng Lingzhi, Li Huifang, Zhangqiu Lin, Zhang Yue. This standard replaces the standards previously issued as. --- GB/T 11108-1989. Determination of thermal diffusivity of cemented carbide

1 Scope

This standard specifies the method of determination of cemented carbide thermal diffusivity --- flash method. This standard applies to the determination of cemented carbide thermal diffusivity. This standard is also applicable to the thermal diffusivity of other isotropic materials Determination.

2 method principle

2.1 When the front of the sample by a light pulse instantaneous uniform irradiation, the light absorbed by the rapid conversion of heat into heat and spread to the back from As a result, the back surface temperature T increases and reaches the maximum value Tm, as shown in FIG. 1. Figure 1 the back of the sample temperature and time 2.2 According to the theory of unstable thermal conductivity, the thermal diffusivity of the sample can be obtained according to formula (1) ~ (5). T1 T2 = 1 2Σ n = 1 (-1) nexp (-n2ω1) 1 2Σ n = 1 (-1) nexp (-n2ω2) (1) ω1 = π2αt1/L2 (2) ω2 = π2αt2/L2 (3) t1 = 0.98t3 (4) t2 = 1.71t3 (5)

3 symbols and definitions

The symbols and definitions involved in this standard are shown in Table 1. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 11108-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 11108-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 11108-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 11108-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 11108-2017?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 11108-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.