JPS5459507A - Turbine nozzle - Google Patents

Turbine nozzle

Info

Publication number
JPS5459507A
JPS5459507A JP12577677A JP12577677A JPS5459507A JP S5459507 A JPS5459507 A JP S5459507A JP 12577677 A JP12577677 A JP 12577677A JP 12577677 A JP12577677 A JP 12577677A JP S5459507 A JPS5459507 A JP S5459507A
Authority
JP
Japan
Prior art keywords
boride
nozzle plate
prevent
errosion
hardness
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.)
Granted
Application number
JP12577677A
Other languages
Japanese (ja)
Other versions
JPS616242B2 (en
Inventor
Hideshi Imatomi
Mitsuharu Hagiwara
Kazunori Yoshimoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12577677A priority Critical patent/JPS5459507A/en
Publication of JPS5459507A publication Critical patent/JPS5459507A/en
Publication of JPS616242B2 publication Critical patent/JPS616242B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To prevent formation of errosion from solid particles coming from a nozzle by covering the rear end portion of a nozzle plate, which might otherwise be liable to form the errosion, with boride.
CONSTITUTION: The covering area of boride is sufficient to be at the vapor outlet end 5C of the vapor passage of a nozzle plate and at a portion extending from the front to the rear side of the nozzle plate. The portion left uncoated is masked, and the nozzle plate is dipped in a graphite crusible, which is filled with boride anhydride, so that it may be coated with the boride by the melting electlytic method. In this meanwhile, the quenching and annealing treatments are sinulataneously accomplished to restore the strength of a mother material. By the coating of boride, the solid particles colliding are sacttered to prevent the cutting actions and elastic deformation of the surface. Moreover, there is no gradient in hardness of the coating layer so that no diffusion of the coating layer takes place even after a long use, thereby to prevent reduction in hardness
COPYRIGHT: (C)1979,JPO&Japio
JP12577677A 1977-10-21 1977-10-21 Turbine nozzle Granted JPS5459507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12577677A JPS5459507A (en) 1977-10-21 1977-10-21 Turbine nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12577677A JPS5459507A (en) 1977-10-21 1977-10-21 Turbine nozzle

Publications (2)

Publication Number Publication Date
JPS5459507A true JPS5459507A (en) 1979-05-14
JPS616242B2 JPS616242B2 (en) 1986-02-25

Family

ID=14918547

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12577677A Granted JPS5459507A (en) 1977-10-21 1977-10-21 Turbine nozzle

Country Status (1)

Country Link
JP (1) JPS5459507A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229704A (en) * 1985-07-29 1987-02-07 ゼネラル・エレクトリツク・カンパニイ Device and method for reducing solid particle corrosion of turbine
JPS6263102A (en) * 1985-09-13 1987-03-19 Toshiba Corp Turbine nozzle
EP1803898A3 (en) * 2002-01-28 2012-01-04 Kabushiki Kaisha Toshiba Geothermal turbine
JP2012504192A (en) * 2008-09-29 2012-02-16 ウイリアム・ディー．・ハースト Alloy coating apparatus and metal riding method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229704A (en) * 1985-07-29 1987-02-07 ゼネラル・エレクトリツク・カンパニイ Device and method for reducing solid particle corrosion of turbine
JPS6263102A (en) * 1985-09-13 1987-03-19 Toshiba Corp Turbine nozzle
EP1803898A3 (en) * 2002-01-28 2012-01-04 Kabushiki Kaisha Toshiba Geothermal turbine
JP2012504192A (en) * 2008-09-29 2012-02-16 ウイリアム・ディー．・ハースト Alloy coating apparatus and metal riding method

Also Published As

Publication number Publication date
JPS616242B2 (en) 1986-02-25

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