1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2009 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3025CAEROSPACEMATERIALSPECIFICATIONAMS3025 REV. C Issued 1980-04 Revised 2009-09Superseding
5、AMS3025B Polyalkylene Glycol Heat Treat Quenchant RATIONALEAMS3025C results from a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers two types of polyalkylene glycol in the form of a liquid. 1.2 Application This product has been used typically as a quench
6、ing medium for solution heat treatment of aluminum alloys to minimize distortion and reduce residual stresses. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this spe
7、cification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 1
8、.4 Classification Quenchants covered by this specification are classified as: Type 1 Single Polymer Type 2 Multiple Polymer 1.4.1 The type supplied shall be as specified on the purchase order. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order fo
9、rms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of tha
10、t document shall apply. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3025C Page 2 of 92.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-000
11、1, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2770 Heat Treatment of Wrought Aluminum Alloy Parts AMS2772 Heat Treatment of Aluminum Alloy Raw Materials AMS2825 Material Safety Data Sheets 2.2 ASTM Publications Available from ASTM International, 100 Barr
12、 Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B 557 Tension Testing Wrought and Cast Aluminum and Magnesium Alloy Products ASTM B 557M Tension Testing Wrought and Cast Aluminum and Magnesium Alloy Products (Metric) ASTM D 445 Kinematic Viscosit
13、y of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity) ASTM D 1218 Refractive Index and Refractive Dispersion of Hydrocarbon Liquids ASTM D 1298 Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
14、ASTM D 4057 Manual Sampling of Petroleum and Petroleum Products ASTM D 6482 Determination of Cooling Characteristics of Aqueous Polymer Quenchants by Cooling Curve Analysis with Agitation (Tensi Method). ASTM D 6549 Determination of Cooling Characteristics of Aqueous Polymer Quenchants by Cooling Cu
15、rve Analysiswith Agitation (Drayton Unit). ASTM D 6666 Evaluation of Aqueous Polymer Quenchants. ASTM E 203 Water Using Karl Fischer Reagent 2.3 ANSI Publications Available from American National Standards Institute 25 West 43rd Street, New York, NY 10036, Tel: 212-642-4900, www.ansi.org.ANSI B46.1
16、Surface Texture 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be polyalkylene glycol and shall meet the requirements of 3.2 and 3.3. 3.2 Properties Quenchant shall conform to the following requirements; tests shall be performed in accordance with specified test methods on quenchant supplied both in c
17、oncentrated form and at the dilution specified in Table 1. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3025C Page 3 of 9TABLE 1 - PROPERTIES Paragraph Test Value Test Method 3.2.1 Conditio
18、n As-received in concentrated form: 3.2.1.1 Water Content (Chemically Combined, By Weight) ASTM E 203 Type 1 45 - 48% Type 2 57 - 63% 3.2.1.2 Specific Gravity ASTM D 1298 Type 1 1.094 0.005 Type 2 1.080 0.025 3.2.1.3 Refractive Index at 68 F (20 C) ASTM D 1218 Type 1 1.4140 0.0050 Type 2 1.3910 0.00
19、50 3.2.1.4 Viscosity at 100 F (38 C) ASTM D 445 Type 1 535 cSt 70 Type 2 300 cSt 20 3.2.2 Conditioned; Diluted to 20% 0.50 by Volume, with Water 3.2.2.1 Viscosity at 100 F (38 C) 4.5.1 Type 1 5.5 cSt 0.5 Type 2 4.4 cSt 0.5 3.2.2.2 Separation Temperature 4.5.2 Type 1 165 F 5 (74 C 3) Type 2 165 F 5 (
20、74 C 3) 3.3 Quenching Capability The minimum tests for qualification shall be those specified in Table 2. TABLE 2 - REQUIRED PREPRODUCTION TESTS PanelAlloyPanelFormPanelDimensions (1) Inches (mm) PanelFinalTemperCoolingRateTensilea lot shall be one batch or tank of quenchant offered for delivery at
21、one time. A lot shall not exceed 10 000 gallons (37 854 L). 4.4.1 Test Methods 4.4.1.1 Viscosity The as-received quenchant shall be diluted to a concentration of 20% + 0.5 by volume of quenchant, using distilled or deionized water. When diluting to 20% by volume with water, the initial water content
22、 (chemically combined with glycol) shall not be considered as a part of the water of dilution. The viscosity of the diluted sample shall be determined at 100 F 1 (38 C 0.6) in accordance with ASTM D 445. 4.4.1.2 Separation Temperature Shall be determined by the following procedure: 4.4.1.2.1 Heat no
23、t less than a 250 mL portion of a well-mixed representative sample of diluted quenchant in a 25 150 mm Pyrex test tube. 4.4.1.2.2 Fit a cork stopper with a 0 to 212 F (18 to +100 C) thermometer so that the thermometer bulb is completely immersed in the liquid. The cork stopper should fit snugly in t
24、he test tube but should have a small V-notch on one side to vent the vapor space in the test tube. 4.4.1.2.3 Immerse the test tube in a suitable heating bath (water or clear oil) so that the liquid in the test tube is below the bath surface. Keep the test tube away from the sides and bottom of the h
25、eating bath. 4.4.1.2.4 Heat the bath slowly (about 5 F (3 C) degrees/minute) with a suitable heater and closely observe the sample in the test tube. Continue heating (but higher than 175 F (79 C) until the sample becomes hazy. 4.4.1.2.5 When the sample exhibits some haze, immediately remove the test
26、 tube from the bath long enough to swirl the contents. The haze should disappear. Return the test tube to the bath and repeat this procedure until a permanent haze persists throughout the sample. Immediately observe the sample temperature. 4.4.1.2.6 Cool the sample slightly with agitation until the
27、solution is again clear. Re-immerse in the heating bath and repeat the previous step until the haze persists again. Re-observe the sample temperature and average with the first temperature observation. 4.4.1.2.7 The two readings should differ by no more than 2 F (1 C). If the readings differ by more
28、 than 2 F (1 C), repeat the entire process with three test temperature observations until all three observations are within 2 F (1 C). Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AMS3025C Pag
29、e 6 of 94.4.2 Cooling Rates Shall be determined by quenching the panels specified in Table 2. 4.4.2.1 For the 0.250 inch (6.35 mm) and 1.0 inch (25 mm) thick panels, an electrically insulated chrome-lalumel thermocouple, not larger than 24 gauge (0.533 mm), shall be inserted in a blind hole to the m
30、id-thickness 0.020 inch (0.51 mm) at the geometric center. The thermocouple shall be inserted in a manner that ensures intimate contact with the panel for optimum thermal transfer and shall be sealed to prevent intrusion of moisture and quenchant. Before each test, thermocouple contact with the part
31、 shall be verified with electrical resistance tests. A second thermocouple of the same size shall be positioned on the outside surface to determine the instant the specimen enters the quenchant. Panels shall have a surface finish of 32 to 63 microinches (0.8 to 1.6 m) Ra determined in accordance wit
32、h ANSI B-46.1 and shall be chemically deoxidized prior to heating. 4.4.2.2 The 0.063 inch (1.60 mm) thick panel shall only have a thermocouple attached to the surface at the center. 4.4.2.3 The panels shall be soaked at the solution heat treating temperature specified in AMS2770 and quenched in the
33、glycol/water solution maintained at 85 to 90 F (29 to 32 C). The glycol concentration used shall be the maximum specified in AMS2770 for the alloy/form/thickness. The tolerance on the glycol concentration shall be +0, 1%. The quench tank shall have no agitation. 4.4.2.4 The time/temperature cooling
34、curve shall be recorded using a high speed oscillographic recorder or a computer based data acquisition system. The temperature recording instrument shall be calibrated prior to testing using a temperature source traceable to National Institute of Standards and Technology (NIST) standards. The quenc
35、h delay shall be recorded. The cooling rate between 750 and 550 F (399 and 288 C) shall be calculated. Duplicate tests shall be run on separate panels. 4.4.3 Tensile Properties Ultimate tensile and yield strengths shall be determined in accordance with ASTM B 557 or ASTM B 557M on two identical grou
36、ps of panels; each group shall contain panels from two different lots of metal from each of two different producers. All tensile tests to be compared shall be performed on the same machine by the same operator. 4.4.3.1 Solution Heat Treatment Shall conform to AMS2770. One group of panels shall be qu
37、enched in glycol and the other in water. The glycol concentration used shall be the maximum specified in AMS2770 for the alloy/form/thickness. The tolerance on the glycol concentration shall be +0, 1%. Quenchant temperatures shall be 85 to 90 F (29 to 32 C) except water used for quenching forgings (
38、or plate if used to simulate forgings) shall be 155 to 160 F (68 to 71 C). The quenchant temperature shall not rise more than 10 F (6 C) during quenching. For the tensile property test, the quenchant shall be agitated sufficiently during quenching to ensure that fresh quenchant is in constant contac
39、t with the surface of the hot metal during the entire quench. The agitation shall be identical for both groups. 4.4.3.2 Precipitation Heat Treatment The two groups being compared shall be given identical aging at room temperature. For convenience, room temperature aging may be arrested by refrigerat
40、ing at -10F (-23 C) or below. The two groups shall be precipitation heat treated at elevated temperature in accordance with AMS2770 in the same load in the same location within the limitations of good racking practice. 4.4.3.3 Testing One longitudinal tensile specimen shall be cut from each side of
41、the center line of each panel. The tensile specimens made from sheet and plate panels 0.250 inch (6.35 mm) and under in nominal thickness shall be flat and of full thickness. Those made from panels over 0.250 inch (6.35 mm) in nominal thickness shall be round with 0.250 inch (6.35 mm) diameter reduc
42、ed section and the axis of the specimen shall be coincident with the mid-plane of the panel. Tensile testing shall be performed in accordance with ASTM B 557 or ASTM B 557M. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted withou
43、t license from IHS-,-,-SAE AMS3025C Page 7 of 94.4.3.3.1 Additional Testing If the tensile or yield strengths of any two specimens from the same test panel differ by more than 3000 psi (20.7 MPa) but not more than 5000 psi (34.5 MPa), two additional specimens shall be tested. They shall be excised f
44、rom locations adjacent to the original pair and equidistant from the center line of the panel. The same procedure shall be followed whenever one or both of the original tests can be positively declared invalid due to a testing machine malfunction or defective specimen(s). No more than four specimens
45、 shall be made from the same panel. 4.4.3.4 Test Results If the spread of tensile or yield strengths from any tests from the same panel is greater than 5000 psi (34.5 MPa), the test in that panel shall be declared invalid. The test may be repeated using another pair of identical panels from the same
46、 producer. The results of the substitute tests shall then be incorporated into the results of the groups in place of the invalidtests. 4.4.4 Intergranular Corrosion Resistance 4.4.4.1 Intergranular corrosion test panels from one lot of metal from each of three different producers shall be solution h
47、eat treated as specified in AMS2770 using the glycol quenchant maintained at 85 to 90 F (29 to 32 C). The glycol concentration used shall be the maximum specified in AMS2770 for the alloy/form/thickness. The tolerance on the glycol concentration shall be +0, 1%. An identical group of specimens shall
48、 be solution heat treated and quenched in 85 to 90 F (29 to 32 C) water. Specimens shall be aged at room temperature for not less than 96 hours before testing. 4.4.4.2 Intergranular corrosion tests shall be performed in accordance with AMS2772. The microsections shall be examined by two metallographers. 4.5 Reports 4.5.1 When requested by purchaser, the vendor of the quenchant shall furnish a report showing the results of preproduction testing. This report shall include AMS3025C, the results from properties (3.2), quenching capability (3.3), cooling ra
