ISO/TS 12927:1999 潤滑油、工業用油および関連製品（クラスL）—ファミリーM（金属加工）—仕様を確立するためのガイドライン | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

In other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of normative document:

• an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote;
• an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote.

An ISO/PAS or ISO/TS is reviewed every three years with a view to deciding whether it can be transformed into an International Standard.

Attention is drawn to the possibility that some of the elements of this ISO/TS 12927 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO/TS 12927 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants, Subcommittee SC 4, Classifications and specifications.

Annexes A, B and C of this Technical Specification are for information only.

Introduction

Considering the difficulties encountered in establishing an international specification for metalworking fluids, particularly because of the diversity of the applications and conditions of use, and because of the problems of simulating the actual conditions of use in the laboratory and hence of developing reliable laboratory methods and testing standards, it has been decided to publish guidelines for establishing specifications in the form of a Technical Specification. Therefore, all information provided by this Technical Specification is only informative, except the classifications by family and viscosity.

This Technical Specification contains, in annexes A to C, suggested methods to evaluate some properties of metalworking fluids which are not yet standardized or still subject to discussions.

1 Scope

This Technical Specification has been prepared with the following purposes:

• to facilitate the application of the ISO 6743-7 classification standard and to precisely state the characteristics to be taken into account to establish specifications for a given application;
• these characteristics could serve as a basis for discussion between the end user and the supplier.

This Technical Specification does not cover specified requirements which should be examined separately with a view to a common agreement between the end user and the product supplier.

This Technical Specification also does not cover the health, safety, disposal and environmental areas which should be dealt with separately, according to the regulations or laws in force in each country.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this Technical Specification. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Technical Specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.