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PL303662A1
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Vacuum-type heat treatment furnace
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PL280175A1
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Method of and apparatus for producing in a generatorless manner a controllable atmosphere for use in heat treatment processes
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System for controlling operation of a double-head angle-type vacuum valve
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Pass-through conveyor belt furnace with diffusion gas atmosphere
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PL275744A1
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A single chamber vacuum furnace, especially for quenching and tempering
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Single-chamber vacuum furnance with gas cooling of its
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PL270086A1
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A vaccum furnce,especially one-chamber,with an all-round gaseous cooling of chrge
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Oil quenching tank
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Apparatus for preheating combustion air to be used in radiator pipe burners in particular in heat treatment furnaces
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Rack for heat treatment of parts in soaking furnace
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Connecting terminal of heating element from the wire of big diameter
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DD155108A5
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Oven for heat treatment metallic workstuecke, especially a chamber vacuum oven
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US4165867A
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Installation for nitriding-sulphidizing of steel and iron elements
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