| 发明名称 |
METHOD OF MAKING HELICAL POLYGON HEAT EXCHANGER COIL FROM THICK-WALL REFRACTORY PIPES |
| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metal forming, particularly, to pipe-bending, and may be used in making helical polygon heat exchanger coils from thick wall refractory pipes. Prior to fixing pipe blank in bending press, two rows of wedge-like grooves are made in its wall with pitch equal to coil helix length. Pipe blank is bent step-by-step in the area of wedge-like grooves to form coil turns.EFFECT: lower forming forces, higher quality.2 cl, 3 dwg |
| 申请公布号 |
RU2478014(C1) |
申请公布日期 |
2013.03.27 |
| 申请号 |
RU20110137942 |
申请日期 |
2011.09.15 |
| 申请人 |
ROSSIJSKAJA FEDERATSIJA, OT IMENI KOTOROJ VYSTUPAET MINISTERSTVO PROMYSHLENNOSTI I TORGOVLI ROSSIJSKOJ FEDERATSII (MINPROMTORG RF) |
发明人 |
KHOVANOV NIKOLAJ NIKOLAEVICH;PETRIKOV SERGEJ ANATOL'EVICH;PROKOPENKO ANATOLIJ SERGEEVICH;POGORELOV VJACHESLAV SERGEEVICH;MISHCHENKO IGOR' OLEGOVICH;ZHIDKOV DMITRIJ ALEKSEEVICH;TARABRINA LJUDMILA NIKOLAEVNA |
| 分类号 |
B21D11/06 |
主分类号 |
B21D11/06 |
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