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Expired
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GB9383/44A
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Individual
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Publication of GB599849ApublicationCriticalpatent/GB599849A/en
C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
C21D1/34—Methods of heating
C21D1/44—Methods of heating in heat-treatment baths
C21D1/46—Salt baths
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Chemical & Material Sciences
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Engineering & Computer Science
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Physics & Mathematics
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Thermal Sciences
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Crystallography & Structural Chemistry
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Mechanical Engineering
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Materials Engineering
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Metallurgy
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Organic Chemistry
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Resistance Heating
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Heat Treatment Of Articles
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Abstract
599,849. Salt bath furnaces. HOLDEN, A. DE F. May 16, 1944, No. 9383. Convention clate, May 19, 1943. [Class 39 (iii)] [Also in Groups XX and XXXV] The temperature of a furnace for the heat treatment of metal by immersion in a fused salt bath is controlled by utilising the heat rays emanating from the upper surface of the bath which may. be concentrated in a thermopile connected to the furnace control gear. In the form shown a lens 32 is adjustably mounted in a tube 33 mounted just above the bath surface and a thermopile 35 disposed at its focal point is connected to a potentiometer pyrometer having a relay for opening the main supply to the electrodes 15, 16, 17 on a predetermined temperature being reached. These electrodes are disposed in triangular arrangement in one half of the bath as shown, and the lens surface is kept clear by passing filtered air downward through tube 33.
GB9383/44A1943-05-191944-05-16Improved method of and furnace for the heat treatment of metals
ExpiredGB599849A
(en)
Procedure and device for regulating the flow of the return current in a continuous glass oven. (Machine-translation by Google Translate, not legally binding)
Procedure to separate the residues of fusion of glass and cube oven for the realization of the same (Machine-translation by Google Translate, not legally binding)
Self-resisting electric furnace for melting glass, with electrodes arranged so as to create symmetrical channels for the molten glass at a regulated temperature distributed independently of the supply current