Alloy cast-iron for producing a seal
- Book ID
- 104382046
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 196 KB
- Volume
- 2011
- Category
- Article
- ISSN
- 1350-4789
No coin nor oath required. For personal study only.
β¦ Synopsis
These selection and qualification procedures are expensive and time-consuming. To eliminate the testing of unsuitable elastomers, short-term laboratory tests are used to give a guide to the long-term performance of the compound.
Test methods that are available to elastomer suppliers without the need for expensive equipment present a significant advantage. Traditional hardness, tensile and tear-strength data are good for QC work but do not predict seal-system performance.
The CS test, with a 24-hour unconstrained reheat cycle, is suggested as a test that does come close to predicting performance. It also offers good repeatability as a quality test. This method is particularly interesting as it does correlate well with the more complicated stress-relaxation test methods.
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Based on the liquid-sinter theory of powder metallurgy, using the heat of liquid iron during casting, the FeαAl O , FeαZrO 2 3 2 and FeαTiC surface composites, with a thickness of 2α3 mm, were sintered on the surface of cast iron by the addition of ZrO , 2 Al O or TiC ceramic powder into press block
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