JPS5768298A - Surface treatment of metallic powder containing silicon for coated electrode - Google Patents
Surface treatment of metallic powder containing silicon for coated electrodeInfo
- 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
Links
- 239000000843 powder Substances 0.000 title abstract 11
- 229910052710 silicon Inorganic materials 0.000 title abstract 4
- 239000010703 silicon Substances 0.000 title abstract 4
- 238000004381 surface treatment Methods 0.000 title abstract 2
- 239000012286 potassium permanganate Substances 0.000 abstract 6
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000005336 cracking Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000003466 welding Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
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
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) |
-
1980
- 1980-10-15 JP JP55144688A patent/JPS5768298A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6138241B2 (en) | 1986-08-28 |
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