GAS CUTTING TIP

• Main Authors: KIMOTO RYOSUKE, KOJO AKIRA, KASHIMATA KAZUYA
• Format: Patent
• Language: English; Japanese
• Published: 19.04.2022
• Subjects: BLASTING; BURNERS; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; HEATING; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

To provide a gas cutting tip which can effectively mix a fuel gas and a pre-heating oxygen.SOLUTION: A tip A has: a cutting oxygen injection port 11 located at a center; a gas injection nozzle 1 having a plurality of fuel gas injection ports 12 which are located around and concentrically with the cutting oxygen injection port; and a cover 2 having a pre-heating oxygen injection port 13 which is around and concentrically with the cutting oxygen injection port. The gas injection nozzle has a first end face 1c in which the cutting oxygen injection port is located, and a second end face 1d in which the fuel gas injection port is located. The first end face 1c and an end face 2b of the cover are located in a substantially same plane, and an annular groove 4 is formed between a plane including the first end face and the end face of the cover and the second end face. The pre-heating oxygen injection port has: an annular injection port which communicates with the annular groove 4, and is formed by a tip side inner peripheral surface of the cover and an outer peripheral surface of the second end face; and a plurality of slits 13c which communicate with the annular injection port and the annular groove, and are formed in the tip side inner peripheral surface of the cover.SELECTED DRAWING: Figure 1 【課題】燃料ガスと予熱酸素を効果的に混合させることができるガス切断火口を提供する。【解決手段】火口Ａは、中心に配置された切断酸素噴射口１１と、切断酸素噴射口と同心上で周囲に複数配置された燃料ガス噴射口１２を有するガス噴射ノズル１と、切断酸素噴射口と同心上で周囲に形成された予熱酸素噴射口１３を有するカバー２と、を有し、ガス噴射ノズルは、切断酸素噴射口が配置された第１端面１ｃと、燃料ガス噴射口が配置された第２端面１ｄと、を有し、第１端面１ｃとカバーの端面２ｂとが略同一平面内に配置されると共に、第１端面とカバーの端面を含む平面と第２端面との間に環状溝４が形成され、予熱酸素噴射口は、環状溝４に連通しカバーの先端側内周面と第２端面の外周面とによって形成された環状噴射口と、環状噴射口及び環状溝に連通しカバーの先端側内周面に形成された複数のスリット１３ｃとを有して構成される。【選択図】 図１