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JPS5768298A - Surface treatment of metallic powder containing silicon for coated electrode - Google Patents

Surface treatment of metallic powder containing silicon for coated electrode

Info

Publication number
JPS5768298A
JPS5768298A JP55144688A JP14468880A JPS5768298A JP S5768298 A JPS5768298 A JP S5768298A JP 55144688 A JP55144688 A JP 55144688A JP 14468880 A JP14468880 A JP 14468880A JP S5768298 A JPS5768298 A JP S5768298A
Authority
JP
Japan
Prior art keywords
metallic powder
potassium permanganate
silicon
surface treatment
heating
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
JP55144688A
Other languages
Japanese (ja)
Other versions
JPS6138241B2 (en
Inventor
Naomi Yamanochi
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP55144688A priority Critical patent/JPS5768298A/en
Publication of JPS5768298A publication Critical patent/JPS5768298A/en
Publication of JPS6138241B2 publication Critical patent/JPS6138241B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Nonmetallic Welding Materials (AREA)
  • Silicon Compounds (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: To stick potassium permanganate on the surfaces of metallic powder and prevent the dry cracking of a welding rod coating material by heating the mixture of metallic powder contg. silicon and an aq. potassium permanganate soln. to limited temps.
CONSTITUTION: 2W25% aq. permanganate soln. is added to metallic powder contg. silicon at 20W50% based on the weight of the metallic powder contg. silicon. Next, the mixture of the metallic powder and the aq. potassium permanganate is heated to 60W90°C to stick the potassium permanganate on the surface of the metallic powder. With heating at below 60°C at this time, it takes too much time for the treatment of the metallic powder, and with heating above 90°C, it is not possible to suppress the dry cracking of the coating material of the welding rod. If the potassium permanganate powder is added and stuck further until the residual moisture of the metallic powder subjected to the above-described surface treatment lowers down to 1.0wt%, the amt. of the potassium permanganate to be stuck on the metallic powder is decreased.
COPYRIGHT: (C)1982,JPO&Japio
JP55144688A 1980-10-15 1980-10-15 Surface treatment of metallic powder containing silicon for coated electrode Granted JPS5768298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55144688A JPS5768298A (en) 1980-10-15 1980-10-15 Surface treatment of metallic powder containing silicon for coated electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55144688A JPS5768298A (en) 1980-10-15 1980-10-15 Surface treatment of metallic powder containing silicon for coated electrode

Publications (2)

Publication Number Publication Date
JPS5768298A true JPS5768298A (en) 1982-04-26
JPS6138241B2 JPS6138241B2 (en) 1986-08-28

Family

ID=15367940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55144688A Granted JPS5768298A (en) 1980-10-15 1980-10-15 Surface treatment of metallic powder containing silicon for coated electrode

Country Status (1)

Country Link
JP (1) JPS5768298A (en)

Also Published As

Publication number Publication date
JPS6138241B2 (en) 1986-08-28

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