JPS6422125U

JPS6422125U -

Info

Publication number: JPS6422125U
Application number: JP11587487U
Authority: JP
Priority date: 1987-07-30
Filing date: 1987-07-30
Publication date: 1989-02-03

Description

[Brief explanation of the drawing]

第１Ａ図は吹管取付部位１に内管２を螺着した
本考案の実施例に係る火口本体の切欠き断面図、
又第１Ｂ図はその火口本体に外管３を取付けた切
断火口の切欠き一部断面図を示す。１：吹管取付部位、２：内管、３：外管、１１
：切断酸素導入孔、１２：シート面、１３：予熱
酸素導入溝、２２：切断酸素孔、２３：予熱用ガ
ス噴出部。 FIG. 1A is a cutaway sectional view of a crater main body according to an embodiment of the present invention in which an inner pipe 2 is screwed onto a blowpipe attachment part 1;
Moreover, FIG. 1B shows a partially cutaway sectional view of a cut-off crater with an outer tube 3 attached to the crater body. 1: Blowpipe installation part, 2: Inner pipe, 3: Outer pipe, 11
: cutting oxygen introduction hole, 12: sheet surface, 13: preheating oxygen introduction groove, 22: cutting oxygen hole, 23: preheating gas ejection part.

Claims

[Scope of utility model registration request]

A preheating oxygen introduction groove and a fuel gas introduction groove are provided on the outer periphery through the seat surface, a blowpipe mounting portion is provided with a cut oxygen introduction hole on the central axis, and an inner part has a cut oxygen introduction hole communicating with the cut oxygen introduction hole. In a cutting nozzle consisting of a tube and an outer tube that fits around the outer circumference of the inner tube and forms a preheating gas ejection section on the outer circumference side of the tip end of the inner tube, the inner tube is heat-resistant. The blowpipe attachment part is made of a ceramic body and the blowpipe attachment part is made of a soft metal body, and the inner tube made of the ceramic body is configured to be screwed into the blowpipe attachment part by a screw groove carved on the inner circumferential side. A cutting crater characterized by things.