拉力试棒取样标准要领.pdfVIP

Spécification technique Ref : 90 59 005 Engineering Standard Rev : D DC1070313 Page :1 /14 Date :10/07/07 Titre / title : Gray Iron for Performer Scrolls Rédaction : A. Landré Approbation : J-P. Bodart 1. 0 SCOPE 1.1 Propose - This specification describes the type of gray iron used in the manufacturing of Performer scrolls. This cast iron material conforms to standard ASTM A48-94a or NF EN 1561, although its mechanical characteristics are intermediary. 1.2 Applicability - This specification applies to all Danfoss-Maneurop Performer scrolls. The maximum temperature taken into account in this spécification is 450°F (230°C). 2.0 APPLICABLE DOCUMENTS 2.1 Référenced documents- ISO 945-1994 or ASTM A 247-67 NF EN 1561 or ASTM A 48-94a 2.2 Related documents - None 3.0 GLOSSARY None 4.0 REQUIREMENTS 4.1 General - The mechanical characteristics of the cast iron should allow a proper resistance of the parts under operating conditons encountered during qualification testing and proper machining properties that comply with Danfoss- Maneurop’s manufacturing equipment and process. 4.2 Chemicals - In order to avoid any compatibility problem with refrigerant and oil, the use of any rust protection or gray iron coating should not be done without the written agreement of Danfoss Maneurop. 4.3 Méchanical and metallurgical - The mechanical strength of the involutes o