发明名称 |
METHOD FOR COMBINATION SECURING OF TUBES TO TUBE PLATES |
摘要 |
FIELD: plastic metal working, possibly combination type securing of tubes to tube plates by mechanical rolling-in and welding. SUBSTANCE: method comprises steps of profiling end portion of tube subjected to preparing operations and forming thickened end portion; making in opening of tube plate at side of its front surface annular recess with bottom surface inclined relative to tube axis; placing tube into tube opening in such a way that tube end is arranged over front surface of tube plate; expanding thickened portion of tube along length exceeding depth of annular recess and performing combined deforming of tube and tube plate at applying axial effort to end of tube; providing lengthwise shift of thickened portion relative to bottom surface of annular recess; then fixing tube relative to walls of opening of tube plate by welding. EFFECT: target operational characteristics of tube-to-tube plate joints realized without acting upon welded seam, elimination of damage of welded seam. 4 dwg |
申请公布号 |
RU2202429(C2) |
申请公布日期 |
2003.04.20 |
申请号 |
RU20010109782 |
申请日期 |
2001.04.11 |
申请人 |
SITET IM. AKAD. S.P. KOROLEVA;OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU "REMONTNO-MEKHANICHESKIJ ZAVOD" |
发明人 |
BATRAEV G.A.;KOZIJ S.I.;KOZIJ S.S.;KONOVALOV A.A. |
分类号 |
B21D39/06;B21D53/08;F28F9/16 |
主分类号 |
B21D39/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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