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GB/T 14235.2-2018 English PDF

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US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 14235.2-2018: Low temperature pattern wax materials for investment casting -- Part 2: Testing methods for usability properties
Status: Valid

GB/T 14235.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14235.2-2018	359	Add to Cart	4 days	Low temperature pattern wax materials for investment casting -- Part 2: Testing methods for usability properties	Valid
GB/T 14235.2-1993	279	Add to Cart	3 days	Testing method for bending strength of pattern materials in investment casting	Obsolete

Similar standards

GB/T 14408 GB/T 13821 GB/T 13820 GB/T 45684 GB/T 25139 GB/T 14235.1

Basic data

Standard ID: GB/T 14235.2-2018 (GB/T14235.2-2018)
Description (Translated English): Low temperature pattern wax materials for investment casting -- Part 2: Testing methods for usability properties
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J31
Classification of International Standard: 71.040.50
Word Count Estimation: 18,181
Date of Issue: 2018-12-28
Date of Implementation: 2019-05-01
Older Standard (superseded by this standard): GB/T 14235.2-1993, GB/T 14235.5-1993, GB/T 14235.9-1993
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 14235.2-2018: Low temperature pattern wax materials for investment casting -- Part 2: Testing methods for usability properties

---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.
Low temperature pattern wax materials for investment casting--Part 2. Testing methods for usability properties ICS 71.040.50 J31 National Standards of People's Republic of China Replace GB/T 14235.2-1993, GB/T 14235.5-1993, GB/T 14235.9-1993 Investment casting low temperature molding Part 2. Performance test methods Part 2. Testingmethodsforusabilityproperties Published on.2018-12-28 2019-05-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Terms and Definitions 1 3 Determination of bending strength 1 4 Determination of surface hardness 3 5 Determination of thermal stability 5 6 Determination of the wetting angle of the investment-adhesive agent 7 7 Test report 9 Appendix A (informative appendix) Table of Differences between New and Old Standards Reference 14

Foreword

GB/T 14235 "Flame Casting Low Temperature Mold" is divided into two parts. --- Part 1. Physical performance test methods; --- Part 2. Use performance test methods. This part is the second part of GB/T 14235. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 14235.2-1993 "Method for determination of bending strength of investment casting mold", GB/T 14235.5-1993 "melting Method for Measuring Surface Hardness of Mold Casting Mold, GB/T 14235.9-1993 "Method for Measuring Thermal Stability of Investment Casting Mold" Standard; this part is to integrate GB/T 14235.2-1993, GB/T 14235.5-1993 and GB/T 14235.9-19933 standards Order. Compared with the three standards replaced, the main technical contents of this section are as follows. --- Revised the scope of application of the standard (see Chapter 1); --- Increase the measurement method of the wetting angle of the investment casting mold binder (see Chapter 6); --- Added test report (see Chapter 7); --- Appendix A gives a comparison table of the differences between this part and the three replaced standards. This part is proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54). This section is responsible for drafting unit. Ningbo Jiwei Investment Casting Co., Ltd. Participated in the drafting of this section. Dongying Jiayang Precision Metal Co., Ltd., Dongfeng Precision Casting Co., Ltd., Suzhou Taier Aviation Materials Limited company, Nanjing You Naite Precision Machinery Manufacturing Co., Ltd., Qingdao Xinnuoke Casting Material Technology Co., Ltd. The main drafters of this section. Luo Shaokang, Xu Luodong, Wei Zhiyu, Chen Yahui, Duan Jidong, Ma Bo, Lan Yong, Li Yi, Zhang Xiao, Song Shanshan, Zhu Shunfeng, Li Hua, Shao Bin, Wu Chao. The previous versions of the standards replaced by this section are. ---GB/T 14235.2-1993; ---GB/T 14235.5-1993; ---GB/T 14235.9-1993. Investment casting low temperature molding Part 2. Performance test methods

1 Scope

This part of GB/T 14235 specifies the bending strength, surface hardness, thermal stability and investment-bonding agent of investment casting low temperature molding materials. Test method for performance properties such as wet angle. This section applies to the bending strength, surface hardness, thermal stability and investment-wetting angle of investment casting low-temperature molding materials. Can measure.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Room temperature bending strength of low temperature molding materials bendingstrengthatambienttemperatureoflowtemperaturepattern Waxmaterials The strength obtained from the load at static loading to brittle fracture at a certain loading speed.

3 Determination of bending strength

3.1 Overview of methods for determining the flexural strength at room temperature Using a prepared paste or liquid molding material, press it into a strength sample of a specified size, and place the sample at a certain temperature for 24 hours and then bend it. The performance tester measures the peak load of the static bending brittle fracture, and calculates the bending strength of the sample by the mechanical formula. 3.2 Instruments and equipment Apparatus for determining the flexural strength. --- Bending performance tester. The sample fixture installed on the bending performance tester is shown in Figure 1. The distance between the fulcrums is 30mm. --- Mercury thermometer. The temperature range is 0 °C ~.200 °C, the accuracy is 1 °C. ---Surface thermometer. The temperature range is from 0 °C to 100 °C with an accuracy of 1 °C. --- Constant temperature water bath. Temperature control accuracy ± 1 ° C. --- Vernier caliper. The range is 0mm~150mm, and the precision is 0.02mm. ---Injection machine. pneumatic or hydraulic piston injection machine or waxing machine. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 14235.2-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 14235.2-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 14235.2-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 14235.2-2018_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 14235.2-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14235.2-2018 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.