Download Dow Corning 561 silicone transformer liquid PDF

TitleDow Corning 561 silicone transformer liquid
Author
LanguageEnglish
File Size1.1 MB
Total Pages95
Document Text Contents
Page 1

Dow Corning® 561
Silicone Transformer

Liquid


Technical Manual

Page 2

The information and data contained herein are based on information we believe
reliable. You should thoroughly test any application and independently conclude
satisfactory performance before commercialization. Suggestions of uses should not be
taken as inducements to infringe any particular patent.






Copyright © 1994, 2006 Dow Corning Corporation. All rights reserved.

Page 47

Section 3: Transformer Design Information

3–19

3.9 Lubricity

Polydimethylsiloxane (PDMS) is usually not recommended for use as a metal-to-metal lubricant.
It lacks the lubricity required for many mechanical applications that involve sliding friction
between metals. However, when rolling friction is involved, Dow Corning® 561 Silicone
Transformer Liquid has good lubricity and good load-carrying capacity between many common
combinations of materials.

PDMS fluid is one of the best lubricants for fiber and plastic gears or bearings constructed of
natural and synthetic rubber, polystyrene, phenolics, and most other plastics. However,
compatibility with each these types of materials should be checked individually.

Tables 3-19, 3-20, and 3-21 contain a list of metal combinations that are rated as “poor,”
“questionable,” and “good,” respectively, when used with Dow Corning® 200 fluid by Dow
Corning as a lubricant. These ratings are merely for comparison; no actual measurements have
been made of the absolute lubricating properties of Dow Corning® 561 Silicone Transformer
Liquid. The data result from a simple sliding test between two metal plates.

Every application that uses silicone fluid as a lubricant is different, and each combination should
be thoroughly tested before any final design recommendations are made.

Table 3-19. Metal combinations rated “poor” when lubricated with Dow Corning ® 200 fluid

Slider Plate Slider Plate Slider Plate

Aluminum Aluminum Cadmium Magnesium Silver Cadmium
Babbitt Cold-rolled steel Babbitt Magnesium
Cadmium Brass Silver
Steel Chromium Tin Brass
Babbitt Babbitt Copper Cadmium
Copper Magnesium Magnesium
Magnesium Silver Zinc
Stainless steel Tin Zinc Babbitt
Tin Zinc Chromium
Brass Babbitt Magnesium Silver Copper
Copper Stainless steel Magnesium
Stainless steel Zinc Silver
Bronze Brass Nickel Brass Stainless steel
Magnesium Magnesium
Stainless steel Nickel
Tin

Page 48

Dow Corning® 561 Silicone Transformer Liquid Technical Manual

3–20


Table 3-20. Metal combinations rated “questionable” when lubricated with Dow Corning® 200 fluid

Slider Plate Slider Plate Slider Plate

Aluminum Stainless steel Chromium Brass Copper Stainless steel
Silver Cadmium Magnesium Aluminum
Tin Chromium Babbitt
Babbitt Aluminum Copper Copper
Brass Magnesium Magnesium Magnesium
Silver Nickel Nickel Babbitt
Chromium Aluminum Silver Cadmium
Babbitt Stainless steel Copper
Tin Stainless steel
Zinc Zinc
Cold-rolled steel Aluminum Tin Silver
Stainless steel

Table 3-21. Metal combinations rated “good” when lubricated with Dow Corning® 200 fluid

Slider Plate Slider Plate Slider Plate

Aluminum Brass Cadmium Aluminum Magnesium Cadmium
Chromium Babbitt Chromium
Copper Chromium Nickel
Magnesium Cadmium Tin
Nickel Chromium Nickel Aluminum
Zinc Copper Chromium
Babbitt Brass Nickel Silver
Cadmium Silver Tin
Chromium Stainless steel Silver Aluminum
Nickel Steel Babbitt
Silver Tin Brass
Steel Zinc Chromium
Zinc Cold-rolled steel Cadmium Copper
Brass Aluminum Graphitar Nickel
Brass Nickel Stainless steel
Cadmium Nylon Steel
Chromium Copper Aluminum Tin
Nickel Babbitt Zinc
Tin Brass Tin Aluminum
Zinc Cadmium Babbitt
Bronze Aluminum Chromium Chromium
Babbitt Copper Copper
Cadmium Magnesium Nickel
Chromium Nickel Stainless steel
Copper Silver Steel
Nickel Tin
Nylon Zinc
Silver
Steel
Zinc

Page 94

Dow Corning® 561 Silicone Transformer Liquid Technical Manual

6–18

6.6 IEEE Guide Availability

The comprehensive IEEE Guide for Acceptance of Silicone Insulating Fluid and Its Maintenance
in Transformers (IEEE C57.111-1989) can be obtained by writing:

Institute of Electrical and Electronics Engineers, Inc.
345 East 47th Street
New York, NY 10017
U.S.A.

Page 95

LIMITED WARRANTY INFORMATION - PLEASE READ
CAREFULLY

The information contained herein is offered in good faith and is
believed to be accurate. However, because conditions and methods of
use of our products are beyond our control, this information should
not be used in substitution for customer’s tests to ensure that Dow
Corning’s products are safe, effective, and fully satisfactory for the
intended end use. Suggestions of use shall not be taken as
inducements to infringe any patent.

Dow Corning’s sole warranty is that the product will meet the Dow
Corning sales specifications in effect at the time of shipment.

Your exclusive remedy for breach of such warranty is limited to
refund of purchase price or replacement of any product shown to be
other than as warranted.

DOW CORNING SPECIFICA LLY DISCLAIMS ANY OTHER
EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR A
PARTICULAR PURPOSE OR MERCHANTABILITY.

DOW CORNING DISCLAIM S LIABILITY FOR ANY
INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Dow Corning is a registered trademark of Dow Corning Corporation.

Printed in U.S.A. Form No. 10-453A-01





Dow Corning Corporation
Midland, Michigan 48686-0994

Similer Documents