ESF information Beijing and Nagoya 2007


ISO/TC 227 – Springs Meeting in Beijing

The third international annual meeting of the ISO/TC 227-Springs took place on 30.11.07 in the „China Academy of Machinery Science & Technology” in Beijing chaired by H. D. Dannert (ESF).

Participants have been the following P-members (working and deciding):

China (SAC), Japan (JISC), Malaysia (DSM), Philippines (BPS),

Republic of Korea (KATS), Thailand (TISI)

Austria (ON), Germany (DIN), France (AFNOR), United Kingdom (BSI)

Missing were India (BIS) and Italy (UNI).

57 or rather 69 comments had to be discussed and were decided for the two running CD’s (committee drafts) of the ISO/TC 227-Springs which are

Glossary of spring terminology (revision of ISO 2162-3)

Shot peening – Part 1: General procedures.

At the end both projects were decided to be lifted into the DIS stage (discussion stages – to be circulated within and commentated by more than 150 national standardisation offices around the world).

Thereafter they will be the base for the next international meeting of the ISO/TC 227-Springs in November 2008 in Thailand and hopefully to become new ISO standards in 2009.

Lately the ISO head office in Geneva did an inquiry by routine whether the ISO 2162-2:1993 shall be revised or not. Decision was taken that this will be in five years from now and a special working team chaired by Mr. Kato shall start immediately to collect worldwide information concerning symbols for springs. One topic will be which future symbol shall be used for the spring rate:

k used in JIS B 2704/Japan and SAE 932 891 / USA and in international spring literature or

R used in EN 13906 / Europe and SMI Handbook / USA or

F’ used in China

In case “R” will not stay to be the symbol for spring rate a lot of costs will come up for the Europeans for adapting the current drawings and vice versa.

China had proposed two new projects covering automobile and rail road and general machinery:

Hot formed helical springs – technical specifications

Leaf springs part 1 – Technical requirements and test methods.

The first project was cut down for general machinery only and started with the following working group members:

China (project leader), Germany, Japan, Malaysia, Philippines and Republic of Korea.

As to me the Europeans will have to obey and accompany very carefully what will happen in Asia.

Imagine the limits for allowable stresses might be put too high in the new ISO standards by over

estimating the own industry big problems will come up with the European customers.

The leaf spring project was postponed.

International Spring Meeting in Nagoya

The JSMA had been inviting for the International Spring Meeting on 01.11.07 in Nagoya chaired by Mr. Aiba (Chairman of JSMA Standardisation).

Partners of JSMA and ESF were around the table and some guests from China, Malaysia, Philippines, Republic of Korea and Thailand


The main item to be finally discussed and decided was the IWA project for global tolerances for compression springs for which JSMA, SMI and ESF are working since some time.

Based on the results of the European meetings on 27.06.07 and on 04.10.07 and on a new formula for spring rate tolerances which was proposed by the VDFI and which is covering the national formulas of US, Japan, UK and Germany and the test results collected by ESF worldwide in 2005 decision was taken for a final document. Now ESF assisted by its European members shall complete the final document for a last circulation within JSMA, SMI and ESF and put forward the publication of it by the ISO head office in Geneva.

The second item was a Web based Multilanguage Dictionary for Springs

Years back the VDFI produced a technical dictionary for springs covering English, French, Italian, Spain and German. Later the Japanese did the same for English, Japanese, Chinese, Indonesian and Taiwanese. Unfortunately in both cases any copy right is missing.

Therefore a new start has to be made and it shall be Internet based.

IST in Sheffield possesses a data base for about 800 words in English, French, Italian, Spain and German which can be converted into any other data base and which could be the base for a new Web based dictionary.

Mr. Watkinson of IST will present some new software for this project during the International Spring Experts Meeting on 02.04.08 at the WIRE 2008 in Düsseldorf. He also will indicate the costs involved.

The last item was the future of our International Spring Experts Meetings.

So far there was once a year an International Spring Experts Meeting at the WIRE fair or some place else to discuss international standardisation activities. By finishing the above IWA project and doing future international standardisation for springs through the ISO/TC 227-Springs only the former activities of this committee will be gone.

It was proposed to have so called annual “International Spring Meetings” in the future to improve any mutual understanding worldwide and to exchange information about general topics and about the economic situations in the different parts of the world. The latter may cover the spring market in general, spring production, employment, labour costs, environment and others.

The first of these so called “International Spring Meetings” shall take place in the afternoon of April 2nd 2008 in Düsseldorf.

A working group shall prepare proposals until the WIRE 2008.

After the Nagoya meeting the JSSE 60th Anniversary International Symposium on Spring Technology could be participated in.

JSSE means Japanese Society of Spring Engineers which organized a very interesting symposium with international speakers experienced in the spring business.

The speakers came from Japan (4), from Germany (3), from the US (2), from Canada (1), from

China (1), from France (1), from the Republic of Korea (1) and from the United Kingdom (1).

H.D.Dannert, Hagen, December 2007

Doc: ESF information Beijing and Nagoya 2007


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