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Visits: 86546632 AMS now reading: 1
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Kristofory F., Mohyla M., Mikuláš D., Vítek J. |
HARDNESS OF NICKEL ELECTRODEPOSITS |
Keywords: cathodic deposition|nickel|sulphosalicylate|hardness|heat treatment|wear resistance| |
No 3 (2003), p. 203-209 |
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Mohyla P., Koukal J. |
CONTRIBUTION TO RESEARCH OF WELDABILITY OF MODERN LOW-ALLOY CREEP RESISTANT STEELS |
Abstract
This article presents the results of weldability tests performed on T23, T24 and T25 steels. Based on these test results a suitable preheating temperature was calculated for welding the said steels of 6 to 20 mm thickness. Further, this article deals with hardening of weld joints in perspective steels T23 and T24 during extensive exposure at operating temperature 500 °C. The extent of secondary hardening depends on application of tempering after welding. Non-tempered weld joints undergo an unacceptable increase in hardness during exposure at operating temperature. Based on test results a suitable temperature profile was calculated for welding membrane walls from T23 and T24 steels.
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Keywords: low-alloy steel|creep resistant steel|welability|secondary hardening|MX particles| |
No 3 (2003), p. 210-216 |
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Zegzulka J. |
LOGISTICS OF BULK MATERIALS |
Keywords: logistics of bulk material|mechanical and physical properties|optimum consumption energy| |
No 3 (2003), p. 240-244 |
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