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GB/T 39428-2020 English PDF

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US$409.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39428-2020: (Visual inspection method for surface quality of sand casting steel parts)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39428-2020	409	Add to Cart	4 days	(Visual inspection method for surface quality of sand casting steel parts)	Valid

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Basic data

Standard ID: GB/T 39428-2020 (GB/T39428-2020)
Description (Translated English): (Visual inspection method for surface quality of sand casting steel parts)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J31
Word Count Estimation: 22,223
Date of Issue: 2020-11-19
Date of Implementation: 2021-06-01
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39428-2020: (Visual inspection method for surface quality of sand casting steel parts)

---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.
(Visual inspection method for surface quality of sand casting steel parts) ICS 71.040.20 J31 National Standards of People's Republic of China Visual inspection method for surface quality of sand casting steel parts 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Detection method 1 5 Test results 2 6 Inspection report 3 Appendix A (informative appendix) This standard and ISO 11971.2020 chapter number comparison table 4 Appendix B (informative appendix) Technical differences between this standard and ISO 11971.2020 and their reasons 6 Appendix C (informative appendix) Comparison photos of surface appearance and discontinuities 8

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the redrafting method to amend and adopt ISO 11971.2020 "Visual Inspection of the Surface Quality of Cast Steel and Iron Castings". This standard and Compared with ISO 11971.2020, there are more adjustments in the structure. Appendix A lists the chapter number pairs between this standard and ISO 11971.2020. According to the list. For other technical differences between this standard and ISO 11971.2020 and their reasons, see Appendix B. Compared with ISO 11971.2020, this standard has also made the following editorial changes. ---Modified the name of ISO 11971.2020, from "Visual Inspection of the Surface Quality of Cast Steel Castings" to "Sand Steel Castings" The Visual Inspection Method for Surface Quality defines the scope of application of the standard so that the content of the standard is consistent with the standard name. This standard was proposed and managed by the National Foundry Standardization Technical Committee (SAC/TC54). Drafting organizations of this standard. Sharing Steel Casting Co., Ltd., Anhui Yingliu Group Huoshan Casting Co., Ltd., Zhejiang Yingluohua Equipment Manufacturing Co., Ltd. Company, Hebei Guohua Dingzhou Power Generation Co., Ltd., Xiangyang Jinnet Machinery Co., Ltd., Qingdao Lianshan Casting Co., Ltd., Dongguan De Wei Casting Products Co., Ltd., Chengde Rongmao Cast Steel Co., Ltd., Shenyang Foundry Research Institute Co., Ltd., China Guangdong Nuclear Engineering Co., Ltd. The main drafters of this standard. Li Wending, Sun Shoukai, Du Yingliu, Chen Jingwen, Li Yongxin, Su Wen, Hong Qiyan, Jiang Hui, Wang Weiran, Hou Xianlong, Yao Shaoyong, Liu Dongxin, Shuai Dejun, Li Mengtao, Huang Hua, Li Chunhua, Li Baozhi, Zhang Jiadong, Zhang Haijun, Wang Jingrong, Wang Jinghui, Qiao Mu. Visual inspection method for surface quality of sand casting steel parts

1 Scope

This standard specifies the visual inspection methods and quality grades for the surface quality of sand casting steel castings. This standard applies to steel castings made by sand casting.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 5611 Casting Terminology

3 Terms and definitions

The following terms and definitions defined in GB/T 5611 apply to this document. 3.1 Compare photos A set of photos used to compare and evaluate different surface appearances and surface discontinuities of the tested castings.

4 Detection method

4.1 Personnel qualification 4.1.1 The inspector shall have the ability to carry out visual inspection. 4.1.2 The inspector shall conduct a visual inspection every year, and the results of the visual inspection must meet the following requirements. a) Within a distance of not less than 30cm, the near vision of one or both eyes should be able to read Jaejer 1 or TimesNewRoman 4.5 or the same size characters (1.6mm height); b) The inspector should have sufficient color vision to be able to distinguish and distinguish the difference in color or gray level involved in visual inspection. 4.2 Surface condition The surface to be inspected should be clean and free of any substances that affect visual inspection. Before the visual inspection, the castings should undergo surface cleaning treatments such as sandblasting and shot blasting. 4.3 Observation conditions Visual inspection should be carried out under the condition of illumination not less than 1000lx. Under certain conditions, portable lighting can also be used as auxiliary lighting. 4.4 Operation method 4.4.1 During visual inspection, the distance between the eyes and the tested casting should be less than 600mm ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39428-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39428-2020_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 39428-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39428-2020_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.