GMKOREA EDS-T-7771-2011 Manufacture of a Defined Oil Film on Steel Surface.pdf
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1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7771 Manufacture of a Defined Oil Film on Steel Surface Do Not Use on New Program; No Replacement. Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 2 Versio
2、n : 3 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This test specification defines a method for applying and manufacturing oil films o
3、f reproducible thickness on steel surfaces. 1.2 Applicability. The manufacture of a defined oil film is used as pre-treatment of a test piece for further tests such as corrosion resistance, adhesiveness of coatings, etc. 2 References Note: Only the latest approved standards are applicable unless oth
4、erwise specified. 2.1 External Standards/Specifications. DIN 50011 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Equipment and Reagents. 3.1.1 Test piece in accordance with technical delivery conditions for materials or other specifications. 3.1.2 ASTM-oil No.
5、 1. 3.1.3 Oil in accordance with the specification as for 3.1.1. 3.1.4 Benzine 100/140 as solvent and thinning agent. 3.1.5 Desiccator to DIN 50011, clause 2.4 (with circulating air). 3.1.6 Bath in the dimensions which guarantee a complete dipping of the test piece. 3.1.7 Cloth without fluff. 4 Proc
6、edures 4.1 Conditions. 4.1.1 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc 4.2 Instructions. 4.2.1 Definition of Oiling Grade. The oiling grade is defined by
7、the oil amount on the test surface of a test piece. The oiling grade list: 4.2.1.1 Light. 1.5 to 2.0 mg oil per 100 cm2 test surface. 4.2.1.2 Medium. 7.5 to 9.5 mg oil per 100 cm2 test surface. 4.2.1.3 Strong. 15.5 to 17.0 mg oil per 100 cm2 test surface. GM KOREA ENGINEERING STANDARDS EDS-T-7771 Co
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