《JIS-B-8358-2004-ENG.pdf》由会员分享，可在线阅读，更多相关《JIS-B-8358-2004-ENG.pdf（8页珍藏版）》请在三一文库上搜索。
1、J IS JAPANESE I NDUSTR IAL STANDARD Translated and Published by Japanese Standards Association Hydraulic fluid power- Bladder type accumulators- Test methods ICs 23.100.99 Reference number : JIS B 8358 : 2004 (E) PROTECTED BY COPYRIGHT 5 s Copyright Japanese Standards Association Provided by IHS und
2、er license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license from IHS -,-,- B 8358 : 2004 Foreword This translation has been made based on the original Japanese Industrial Standard revised by th
3、e Minister of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee, as the result of proposal for revision of Japanese Industrial Standard submitted by Japan Fluid Power Association (JFPA)/ Japanese Standards Association (JSA) with the draft being attached
4、, based on the provision of Article 12 Clause 1 of the Industrial Standardization Law applicable to the case of revision by the provision of Article 14. Consequently JIS B 8358 : 1995 is replaced with this Standard. In the revision this time, the standard has been reviewed overall and transformed to
5、 a standard of test method and, as a result, range of use, classification, name of parts, materials, construction, shape and dimen- sions, appearance, and performance are deleted. Attention is drawn to the possibility that some parts of this Standard may conflict with a patent right, application for
6、 a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have technical properties. The relevant Minister and the Japanese Industrial Standards Committee are not responsible for identifying the patent right, applica
7、tion for a patent after opening to the public, utility model right or application for registration of utility model after opening to the public which have the said technical properties. Date of Establishment: 1969-04-01 Date of Revision: 2004-11-20 Date of Public Notice in Official Gazette: 2004-11-
8、22 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Industrial Machinery JIS B 8358 : 2004, First English edition published in 2005-05 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the e
9、vent of any doubts arising as to the contents, the original JIS is to be the final authority. Q JSA 2005 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in w
10、riting from the publisher. Printed in Japan SIIAT PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license
11、from IHS -,-,- B 8358 : 2004 Contents Page 1 2 3 4 5 5.1 5.2 6 6.1 6.2 6.3 7 Scope Normative references Definitions Classification of test . Testing items Type test . Acceptance test Test methods Type test . Acceptance test Oil for test Expression indicating conformity to standard . (i PROTECTED BY
12、COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 8358 : 2004 H
13、ydraulic fluid power-Bladder type accumulators-Test methods 1 This Japanese Industrial Standard specifies the test methods of the bladder type accumulators used for hydraulic fluid system (hereafter referred to as “accu- mulators”). Scope 2 Normative references The following standards contain provis
14、ions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards (including amendments) indicated below shall be applied. JIS B 0142 JIS K 2213 JIS K 6251 JIS K 6253 JIS K 6258 JIS K 6261 JIS Z 2329 Glossary of terms for oil hydraulics
15、 and pneumatics Turbine oils Rubber, vulcanized or thermoplastic-Determination of tensile stress- strain properties Hardness testing methods for rubber, vulcanized or thermoplastic Rubber, vulcanized or thermoplastic-Determination of the effect of liquids Low temperature testing methods for rubber,
16、vulcanized or thermo- plastic Methods for bubble leak testing 3 Definitions 0142 and the following definitions apply: For the purpose of this Standard, the definitions given in JIS B a) bladder type accumulator usually isolated by the bladder kept on one end of the container nominal capacity the cap
17、acity used for accumulator in order to provide con- venience in designation discharge capacity the volume of the hydraulic fluid discharged from accu- mulator for the period during which the pressure applied the accumulator changes from the highest working pressure of the circuit to the lowest worki
18、ng pressure gas load accumulator in which fluid and gas are b) c) d) discharge flow rate by the time required for the discharge the value obtained by dividing the discharge capacity 4 Classification of test The tests are classified into type test and acceptance test. 5 Testing items 5 . 1 In type te
19、st, the following tests shall be carried out for the newly designed accumulators and considered to be newly designed accumulators as a re- sult of design changes. Type test PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/11
20、11111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license from IHS -,-,- 2 B 8358 : 2004 a) Physical test on the bladder is as follows: i) tensile test of bladder; 2) oil pressure resistance test of bladder; 3) low temperature test of
21、bladder. Destructive test of accumulator body Repeated performance test of accumulator Discharge flow rate test of accumulator b) c) d) 5 . 2 Acceptance test In the acceptance test, the following tests shall be carried out for the accumulators of the same type as those the performance of which has b
22、een confirmed upon completing the type test. The testing items and the standard values in each test, however, may be changed in accordance with the agreement between the parties concerned. a) b) c) Performance test of accumulator Air leakage identifying (flaw identifying test) of bladder Pressure pr
23、oof test of accumulator body 6 Test methods 6 . 1 Type test a) Physical test of bladder The tests shall be as follows: i) Tensile test of bladder The tensile test of the rubber used for the blad- der is carried out in accordance with JIS K 6251. The test piece is sampled from the bladder or the stan
24、dard test piece, either of which is used. Oil pressure resistance test of bladder The oil pressure resistance test of the rubber used for the bladder is carried out in accordance with JIS K 6258 and the oil for test shall be No. 1 or No. 3 and, in addition, the im- mersion test condition shall be 70
25、 h at 100 “C+1 OC. At this time, the tests on the change of tensile strength and elongation are carried out in accordance with JIS K 6251 and the hardness test is done in accordance with JIS K 6253. Low temperature test of bladder The low temperature test of the rubber used for the bladder is carrie
26、d out in accordance with JIS K 6261. 2) 3) b) Destructive test of accumulator body The accumulator from which the blad- der is removed is filled with water and the destructive test pressure obtained by the following formula is applied through the oil supply and exhaust mouth to confirm that it is no
27、t destroyed. o t Pt = SP- a d PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license from IHS -,-,- 3 B 8
28、358 : 2004 300 O00 times or more Pressure of 25 % to 30 % of highest working pressure Repeat from the pressure lower than the highest working pressure x 0.1 to the highest working pressure. where, Pt : destructive test pressure P : highest working pressure : allowable tensile stress of the material
29、at the tem- perature of pressurizing test c h : allowable tensile stress of the material of the high- est design temperature 5 : safety factor c) Repeated performance test of accumulator the condition given in table 1. Before and after the repeated working test, the filler gas shall be confirmed not
30、 to be leaking by reducing the oil pressure down to the air pressure at room temperature. The test is carried out under Pre-charge pressure 3.8 Table 1 Repeated performance test condition Working pressure (oil pressure) Lower from 6.3 down to 4.2 I Number of cycles I Pre-charge pressure I Working pr
31、essure (oil pressure) 1 d) Discharge flow rate test of accumulator In the test, the accumulator is filled with gas so as to be in compliance with the gas pressure specified in table 2 and the gas is varied with the working pressure (oil pressure) specified in table 2 to measure discharge time and di
32、scharged volume. Table 2 Discharge flow rate test condition Unit : MPa (gauge pressure) 6.2 Acceptance test a) Electric leakage in bladder (flow identification) test Air pressure is ap- plied so that the bladder expands exceeding the nominal capacity and, after con- firming that no harmful flaws are
33、 in any parts, the bladder shall be examined for air leakage. The air leakage shall be confirmed by immersing the bladder in a state filled with air into a water tank at least for 5 min or coating the foam liquid specified in JIS Z 2329 on the overall surface of bladder. Pressure resistance test of
34、accumulator body The accumulator from which the bladder has been removed shall be filled with water, a pressure 1.5 times the maximum working pressure shall be applied from the oil supply and ex- haust mouth, keep the pressure at least for 5 min and confirm that there is no abnormality in any parts.
35、 b) PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license from IHS -,-,- 4. B 8358 : 2004 c) Performance
36、 test of accumulator The accumulator shall be filled with gas so as to satisfy the gas pressure given in table 3 and the test shall be carried out at the working pressure (oil pressure) specified in table 3. Besides, the filler gas shall be confirmed not to leak before or during the per- formance te
37、st. Table 3 Performance test condition At least 10 cycles Pressure of 25 5 % to 30 % of the maximum working pressure Working pressure (oil pressure) pressure of 50 % of the maximum working pressure to the maximum working pressure. 6 . 3 of class 2 in JIS K 2213. Oil for test Unless otherwise specifi
38、ed, such oil given as IS0 VG32 or VG46 7 Expression indicating conformity to standard When tested in accordance with this Standard and confirmed to be in conformity, the following expression shall be given in the test report, catalog and sales documents. “The test method of bladder type accumulator
39、conforms to JI$ B 8358 - Hydraulic fluid pressure - Bladder type accumulator - Test methods”. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduct
40、ion or networking permitted without license from IHS -,-,- Errata for JIS (English edition) are printed in Standardization Journal, published monthly by the Japanese Standards Association, and also provided to subscribers of J I S (English edition) in Monthly Information. Errata will be provided upo
41、n request, please contact: Standardization Promotion Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 l% Recycled paper PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 22:20:53 MSTNo reproduction or networking permitted without license from IHS -,-,-