The new generation of vacuum furnaces for heat treatment
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The use of vacuum furnaces of the new generation with convective heating of the charge makes it possible to shorten the time of the full cycle of heat treatment and provides a uniform heating over the cross section and a decrease in the level of thermal stresses in the parts (removal of the risk of crack formation), while the high-pressure gas cooling with the use of a multipurpose system of gas flow during the cooling of the charge makes it possible to widen the range of the treated steels and perform isothermal quenching.
Treatment in such vacuum furnaces makes it possible to avoid quenching cracks, reduce to a minimum the quenching strain, and realize automatic control of cooling of dies, stamps, and other complex-geometry instruments during isothermal quenching.
KeywordsHeat Treatment Bainite Tool Steel Salt Bath Vacuum Furnace
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- 1.A. I. Lyapunov, “Use of vacuum technology in machine building,”Tekhnol. Met., Nos. 7 and 8 (1999).Google Scholar
- 2.A. I. Lyapunov. “Heat treatment in vacuum,” in:Rep. Int. Conf. on Metal Science and Heat Treatment, Kazanlyk, Bulgaria, Part 1 (1996), pp. 3–8.Google Scholar
- 3.I. S. Pencheva, “Vacuum heat treatment of tool steel,”Tekhnol. Met., No. 5, 1999.Google Scholar
- 4.V. P. Balkov, “Directed development of structures and technologies of metal cutting tools,”Instr., Tekhnol., Obor., No. 1 (1998).Google Scholar
- 5.S. P. Konakov, “Ecological-economical efficiency of vacuum heat treatment,”Materiallovedenie, No. 6, 53–56 (1999).Google Scholar
- 6.P. Pinio, “The new generation of LZT Eltherma vacuum furnaces with high-pressure gas cooling and convective heating,” in:Mater: Symp. “Heat Treatment and Technology 98,” Svebodzin, Poland (1998).Google Scholar
- 7.A. I. Lyapunov, “Advancing the heat treatment of parts from tool steel,”Tekhnol. Met., Nos. 5–6 (1998).Google Scholar
- 8.E. A. Smol'nikov,Heat Treatment and Surface Impregnation of Tools in Salt Baths [in Russian], Mashinostroenie, Moscow (1989).Google Scholar
- 9.Progressive Machining Tools and Methods for Improving Their Quality [in Russian], Soyuz Nauch. Inzh. Obshchestv, Moscow (1991).Google Scholar
- 10.A. I. Lyapunov and Ya. Petrun'ko, “Vacuum equipment for heat treatment,”Metalloved. Term. Obrab. Met., No. 8, 15–16 (1995).Google Scholar
- 11.E. A. Smol'nikov and L. M. Sarmanova,Ways of decreasing the Deformation of Shells of Assembled Milling Cutters [in Russian], VNIITÉMR, Moscow (1990).Google Scholar
- 12.P. Heplmann, “Vacuum heat treatment with convective heating and gas hardening at high pressure,” in:Symp. ALDGmbH Company [in Russian], Moscow (1998).Google Scholar