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GB/T 25157-2010 English PDF

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GB/T 25157-2010: Inspections methods of injection moulding machines for rubber and plastics
Status: Obsolete
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GB/T 25157-2010English559 Add to Cart 3 days [Need to translate] Inspections methods of injection moulding machines for rubber and plastics Obsolete GB/T 25157-2010

PDF similar to GB/T 25157-2010


Standard similar to GB/T 25157-2010

GB/T 45132   GB/T 25156   GB/T 32662   GB/T 25158   GB/T 25155   

Basic data

Standard ID GB/T 25157-2010 (GB/T25157-2010)
Description (Translated English) Inspections methods of injection moulding machines for rubber and plastics
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G95
Classification of International Standard 71.120; 83.200
Word Count Estimation 14,165
Date of Issue 2010-09-26
Date of Implementation 2011-03-01
Quoted Standard GB/T 3785-1983; GB 22530-2008
Regulation (derived from) National Standard Approval Announcement 2010 No.6 (Total No.161)
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 technical conditions of rubber and plastic injection molding machine detection methods and safety requirements detection methods. This standard applies to the detection of rubber and plastic injection molding.

GB/T 25157-2010: Inspections methods of injection moulding machines for rubber and plastics

---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.
Inspections methods of injection molding machines for rubber and plastics ICS 71.120; 83.200 G95 National Standards of People's Republic of China Testing Method of Rubber Plastic Injection Molding Machine 2010-09-26 release 2011-03-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

Chapter 3 of this standard technical conditions should be used with GB/T 25156-2010 "rubber plastic injection molding machine general technical conditions" With the use of. The safety requirements of Chapter 4 of this standard should be used in conjunction with GB 22530-2008. This standard is proposed by the China Petroleum and Chemical Industry Association. This standard by the National Rubber and Plastics Machinery Standardization Technical Committee (SAC/TC71) centralized. This standard is responsible for drafting units. Ningbo Haitian Plastic Machinery Group Co., Ltd., Yuyao Huatai Rubber & Plastic Machinery Co., Ltd. This standard participates in the drafting unit. Donghua Machinery Co., Ltd., Ningbo Haida Plastic Machinery Co., Ltd., Li Jin Group Shenzhen Science and Technology Co., Ltd., Ningbo Hengrun Plastic Machinery Co., Ltd., Ningbo Haitai Machinery Group Co., Ltd., Guangdong Foshan Zhende Plastic Machinery Co., Ltd., Zhejiang Jiang Shenda Machinery Manufacturing Co., Ltd., the National Plastics Machinery Product Quality Supervision and Inspection Center, Guangdong Iraq of the Precision Machinery Co., Ltd. The main drafters of this standard. Gao Shiquan, Wang Naiying, Luo Baoshu, Yang Yafeng. This standard participates in the drafters. Li Qing, Wang Wangbin, Li Jianyue, Cai Hengzhi, Chen Fuchang, Zhu Lizhi, Liang Jianmin, Du Jianxue, Guo Yiping, Zheng Ji, Zhang tao Testing Method of Rubber Plastic Injection Molding Machine

1 Scope

This standard specifies the technical conditions of rubber and plastic injection molding machine testing methods and safety requirements of detection methods. This standard applies to the detection of rubber and plastic injection molding machine.

2 normative reference documents

The terms of the following documents are hereby incorporated by reference into this standard. Whichever is the date of the reference file, which is followed by all (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard Whether you can use the latest version of these files. For undated references, the latest edition applies to this standard. Electrical and acoustic performance of sound level meter GB/T 3785-1983 and test method GB 22530-2008 Safety requirements for rubber and plastic injection molding machines (EN201..1997, NEQ)

3 technical conditions detection method

3.1 Common detection methods 3.1.1 Calculation of theoretical injection volume The theoretical injection volume is calculated according to equation (1). VC = π4d S (1) Where. VC --- theoretical injection volume, in cubic centimeters (cm3); dS --- screw or barrel plunger diameter in centimeters (cm); S --- Rated injection stroke in centimeters (cm). 3.1.2 testing of plasticizing capacity 3.1.2.1 detection conditions a) plasticizing ability, injection rate, the actual injection of three should be detected simultaneously; b) Material recommendation. plastic injection molding machine using polystyrene (PS), rubber injection molding machine using nitrile rubber (NBR); c) plastic injection molding machine nozzle heating temperature of 216 ℃ ± 6 ℃, rubber injection molding machine injection barrel at the heating temperature 65 ℃ ± 5 ℃; d) During the testing process, the back pressure should not be adjusted after the set; e) the injection nozzle is in the lock state when preforming; f) rated injection stroke; g) The screw is rated speed, rotation time and stop time is 1. 1. 3.1.2.2 Detection method Use a stopwatch or other more accurate chronograph to record the plasticization of the whole trip 1/4 to the plasticization of the whole trip 3/4 of the plasticizing time (t plastic) After the injection of empty, until the material after cooling with a standard weighing device to weigh its quality (w plastic), and then calculate the plasticizing capacity (G), G = w plastic 2t plastic The So plasticized Test three times, and finally take the arithmetic average of the results of the three calculations, as the plasticizing ability value.

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