I.S. EN 12890:2000
Current
The latest, up-to-date edition.
FOUNDING - PATTERNS, PATTERN EQUIPMENT AND COREBOXES FOR THE PRODUCTION OF SAND MOULDS AND SAND CORES
Hardcopy , PDF
English
01-01-2000
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Order information and delivery conditions
4.1 General
4.2 Points to be agreed
4.3 Mandatory information
5 Classification
6 Specifications
6.1 General
6.2 Designation
7 Manufacturing requirements
7.1 Materials
7.2 Manufacture
7.3 Contractions
7.4 Tapers
7.5 Clearances
7.6 Required machining allowances (RMA)
7.7 Dimensional tolerances
7.8 Surface coating
8 Quality control
9 Usage
9.1 General
9.2 Identification
9.3 Modifications
9.4 Repair and refurbishment
9.5 Protection and packaging for transportation and storage
Table 1 Quality classes for patterns, pattern equipment and
coreboxes
Table 2 Quality classes - patterns, pattern equipment and
coreboxes made of wood
Table 3 Quality classes - patterns, pattern equipment and
coreboxes made of metal
Table 4 Quality classes - patterns, pattern equipment ant
coreboxes made of plastic
Table 5 Characteristics of patterns and pattern equipment
Table 6 Characteristics of coreboxes
Table 7 Tapers
Table 8 Surface coatings (painting and colour-coding of
patterns, pattern equipment and coreboxes
Figure 1 Examples of clearance of core prints (vertical core)
Figure 2 Example of clearances of core prints (horizontal
core)
Figure 3 Values of clearances of core prints (for moulding
with horizontal joint surface)
Annex A (informative) Guidelines on the use of tables in this
standard
Annex B (informative) Reference values for linear casting
contractions
Bibliography
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