Кабацький О. Kabatsky O.V. Increasing of cold crack resistance of middle carbon low alloy steels weldments

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0405U001167

Thesis Registration Form

0405U001167.pdf

Applicant for

Specialization

  • 05.03.06 - 3варювання та споріднені процеси і технології

21-03-2005

Specialized Academic Board

Д 26.002.15

Publishing and Printing Institute of Igor Sikorsky Kyiv Polytechnic Institute

Essay

The work is aimed to development of new method which allow to effectively prevent formation of cold cracks without use of additional technological measures in middle carbon low alloy steels weldmentsAt the first stage the choice of an rational alloying basis and modifying characteristics have been carried out. The mathematical model which defines de-pendence of weld metal mechanical properties and their cold crack resistance on concentration of alloying and modifying elements is developed. Researches of initiation and develop-ment cold HAZ-cracks in weldments are executed. The op-timal variant and parameters of modifying for cold crack pre-vention and their influence on major factors which define cold HAZ-crack formation is determined. Recipes of elec-trode covering for welding of some high-strength steels are developed. Results of trial check and economic benefit calcu-lations of the developed electrodes improvement are ob-tained.

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Part 2.doc

Part 3.doc

Part 4.doc

Part 5.doc

Perechen ssulok.doc

Prilogenie A.doc

Prilogenie B.doc

Prilogenie C.doc

Prilogenie D.doc

Soderganie.doc

Title.doc

TitleAref.doc

Vuvodu.doc

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aref.doc

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