JPS6279876U

JPS6279876U -

Info

Publication number: JPS6279876U
Application number: JP17268385U
Authority: JP
Priority date: 1985-11-09
Filing date: 1985-11-09
Publication date: 1987-05-21

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す加熱炉の断面図
、第２図は同右側面図、第３図は他の実施例の炉
心管の断面図、第４図は第３図の―断面図、
第５図は従来の加熱炉の断面図である。１……炉本体、２……炉心管、２ａ……膨出部
、２ｂ……両端部。 Fig. 1 is a sectional view of a heating furnace showing an embodiment of the present invention, Fig. 2 is a right side view of the same, Fig. 3 is a sectional view of a furnace core tube of another embodiment, and Fig. 4 is the same as in Fig. 3. cross section,
FIG. 5 is a sectional view of a conventional heating furnace. DESCRIPTION OF SYMBOLS 1...Furnace body, 2...Furnace core tube, 2a...Bulging part, 2b...Both ends.

Claims

[Claims for Utility Model Registration] 1. Formation of a carbon film on the base of a resistor that is placed horizontally within the furnace main body by inserting both ends into through holes provided on both side walls of the furnace main body, and placed inside the furnace main body. In the furnace core tube of a heating furnace, a large diameter bulge is provided in the middle portion of the furnace core tube that enters the furnace body, and both ends of the furnace core tube that pass through both side walls of the furnace body are made small in diameter. A furnace core tube for a heating furnace for manufacturing resistors, characterized by: 2. A utility model registration request characterized in that the large-diameter bulging part consists of a horizontal part and an inclined part continuing on both sides of the horizontal part, and a protrusion is provided inside the horizontal part and the inclined part. A furnace core tube for a heating furnace for manufacturing resistors according to scope 1.