Internal-diameter precision in the expansion of hot-rolled pipe
Tóm tắt
There is considerable demand for steel pipe at present in the construction industry. The most important characteristics of such pipe are dimensional precision, surface quality, high strength, and high performance. The precision of the pipe’s inner channel is of particular interest, since it determines the operational reliability and economic efficiency of the pipe. An effective method of increasing the precision is expansion of the pipe on a mandrel. The pipe precision may be investigated by means of finite-element modeling using computer software. That permits the investigation of contact-free expansion at the input and output of the deformation region, the nonuniformity of the deformation, and the increase in precision. The determination of these characteristics is fundamental to the development of optimal deformation conditions and tool design, so as to obtain pipe with a very precise internal diameter.
Tài liệu tham khảo
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