ISO 1927-7:2012 モノリシック（成形されていない）耐火物—パート7：事前に成形された形状のテスト | 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 2.

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.

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

ISO 1927-7 was prepared by Technical Committee ISO/TC 33, Refractories.

ISO 1927 consists of the following parts, under the general title Monolithic (unshaped) refractory products:

• Part 1: Introduction and classification
• Part 2: Sampling for testing
• Part 3: Characterization as received
• Part 4: Determination of consistency of castables
• Part 5: Preparation and treatment of test pieces
• Part 6: Measurement of physical properties
• Part 7: Tests on pre-formed shapes
• Part 8: Determination of complementary properties

1 Scope

This part of ISO 1927 specifies methods for the testing of as-delivered pre-formed shapes. It applies to shapes fabricated from dense and insulating castables and ramming materials as defined in ISO 1927-1.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1

corner defect

missing corner, defined by the three dimensions a, b and c as indicated in Figure 1

Figure 1 — Typical corner defect

Key

a, b and c

Three dimensions defining the missing corner

3.2

edge defect

missing edge, defined by the three dimensions, e, f, and g as indicated in Figure 2

Figure 2 — Typical edge defect

Key

e, f, and g

Three dimensions defining the missing edge

3.4

hairline cracks

fine cracks visible on the surface of a shape whose length can be measured and whose width is less than or equal to 0,2 mm, see Figure 3.

Figure 3 — Typical cracks

Key

1	Hairline crack
2	Surface crazing
3	Open cracks

Bibliography