JPS5770306A - Over-fire air nozzle for front wall firing boiler - Google Patents

Over-fire air nozzle for front wall firing boiler

Info

Publication number
JPS5770306A
JPS5770306A JP14680380A JP14680380A JPS5770306A JP S5770306 A JPS5770306 A JP S5770306A JP 14680380 A JP14680380 A JP 14680380A JP 14680380 A JP14680380 A JP 14680380A JP S5770306 A JPS5770306 A JP S5770306A
Authority
JP
Japan
Prior art keywords
layers
air nozzle
sprayed
alloy
resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14680380A
Other languages
Japanese (ja)
Inventor
Sadato Shigemura
Hirotoshi Makimoto
Hideaki Yatani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP14680380A priority Critical patent/JPS5770306A/en
Publication of JPS5770306A publication Critical patent/JPS5770306A/en
Pending legal-status Critical Current

Links

Landscapes

  • Air Supply (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)

Abstract

PURPOSE: To improve the durability of the air nozzle by a method wherein the main body of the over-fire air nozzle is subjected to a diffusion-penetration treatment with Al or the like and then flame-sprayed with Ni-Cr alloy and finally flame-sprayed with ceramic material thereon.
CONSTITUTION: The desired part in a metallic material 3 is permeated by diffusion with metal such as Cr, Al, Al-Cr alloy, Si, B or the like by means of diffusing permeation treatment method in order to form diffusing permeation treated layers 4. At this time, only the diffused layers are left behind by removing pure metallic layers at the outmost surface by means of blasting. In succession, Ni-Cr alloy layers 5 are formed on said diffused layers by means of plasma spraying method. The sprayed layers 5 serve for the improvement of the adhesiveness of ceramic material in the next process and for obtaining better adhesiveness by promoting the alloying with substrate diffusing permeation treated layers 4. Furthermore, the sprayed layers 5 are coated with ceramics 6 such as zirconia, which has excellent oxidizing resistance, thermal resistance and the like, or the like in order to give the layers 5 oxidizing resistance, thermal resistance and corrosion resistance. And, the air nozzle is divided into two pieces or into a main body side nozzle 7 and a tip side nozzle 8, both of which are fitted with each other by bolts 9, resulting in enabling to change the burnt-out piece.
COPYRIGHT: (C)1982,JPO&Japio
JP14680380A 1980-10-22 1980-10-22 Over-fire air nozzle for front wall firing boiler Pending JPS5770306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14680380A JPS5770306A (en) 1980-10-22 1980-10-22 Over-fire air nozzle for front wall firing boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14680380A JPS5770306A (en) 1980-10-22 1980-10-22 Over-fire air nozzle for front wall firing boiler

Publications (1)

Publication Number Publication Date
JPS5770306A true JPS5770306A (en) 1982-04-30

Family

ID=15415878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14680380A Pending JPS5770306A (en) 1980-10-22 1980-10-22 Over-fire air nozzle for front wall firing boiler

Country Status (1)

Country Link
JP (1) JPS5770306A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058237U (en) * 1991-06-29 1993-02-05 株式会社川崎技研 Secondary combustion air blowing nozzle for refuse incinerator
FR2882764A1 (en) * 2005-03-03 2006-09-08 Air Liquide METHOD FOR COATING AN OXYGEN-GAS OXYGEN EQUIPMENT OR ELEMENT
US10288281B2 (en) * 2015-07-02 2019-05-14 David Allen Brownlee Two-part block nozzle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222724A (en) * 1975-08-14 1977-02-21 Matsushita Electric Ind Co Ltd Alkaline battery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222724A (en) * 1975-08-14 1977-02-21 Matsushita Electric Ind Co Ltd Alkaline battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058237U (en) * 1991-06-29 1993-02-05 株式会社川崎技研 Secondary combustion air blowing nozzle for refuse incinerator
FR2882764A1 (en) * 2005-03-03 2006-09-08 Air Liquide METHOD FOR COATING AN OXYGEN-GAS OXYGEN EQUIPMENT OR ELEMENT
US10288281B2 (en) * 2015-07-02 2019-05-14 David Allen Brownlee Two-part block nozzle

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