CN85109045A - The high-speed steel surfacing welding of alkali metal containing - Google Patents
The high-speed steel surfacing welding of alkali metal containing Download PDFInfo
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- CN85109045A CN85109045A CN85109045.1A CN85109045A CN85109045A CN 85109045 A CN85109045 A CN 85109045A CN 85109045 A CN85109045 A CN 85109045A CN 85109045 A CN85109045 A CN 85109045A
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- welding
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- surfacing welding
- potassium
- speed steel
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Abstract
The present invention is the hardfacing electrode that is used for built-up welding cutting tool and special dies.By in coating or medicine core, adding an amount of potassium or sodium ferroalloy, improve the alloy carbide form of high-speed steel surfacing welding deposited metal, thereby improve the toughness and the hardness of deposited metal, impact flexibility reach 0.9～1.2 kilogram-metre/centimetre
2, hardness HRC62～64 also make the overlay cladding retained austenite reduce simultaneously, can remove post weld heat treatment from.Welding procedure and crack resistance are improved, and manufacturing process is simple, and cost is lower.This surfacing welding can be used for cutting tool, jaw, special dies and the built-up welding of the machine components of working under the impact wear condition.
Description
The invention belongs to welding field, is the hardfacing electrode of built-up welding cutting tool and special dies.
The high-speed steel surfacing welding is depositedly in the metal surface to have wear-resistingly, anti-corrosion, and the alloy welding deposit layer of heat-resisting and red property such as hard is to satisfy the requirement of part under the different operating condition.For hardness and the red hardness that improves overlay cladding, all take to make the corresponding to approach of deposited metal alloy system and chemical analysis and standard code both at home and abroad.As э-80B18X4 φ, the з-90B10X5 φ 2 of Soviet Union г OCT10051-75 standard code and heap 307 welding rods of China.Because alloy carbide is net distribution, the deposited metal poor toughness, remained austenite content is many, influences the hardness of overlay cladding, and also must carry out complicated heat treatment after the built-up welding.Address the above problem and do not see that so far the data report is arranged.
The objective of the invention is to improve the toughness and the hardness of high-speed steel surfacing welding deposited metal, make it can under as-welded, use and remove from complicated heat treatment.
The present invention adds an amount of alkali metal in the coating of surfacing welding, change the distribution and the shape of deposited metal carbide, thereby improves the toughness and the hardness of deposited metal.Alkali metal adopts and to contain potassium or sodium 10～15%(weight) ferroalloy, behind crushing screening, carry out dry method passivation and wet method Passivation Treatment again; Coating adopts basic slag system; Alloying constituent adopts ferrotungsten, carbon ferrochrome, and graphite, vanadium iron etc. also can add an amount of molybdenum-iron according to the needs of overlay cladding; Gas making, slag former are selected marble, (or magnesia), fluorite, quartz, sodium carbonate etc. for use.The proportioning of its coating composition is respectively by weight percentage: marble (or magnesia) 12～20%, fluorite 5～10%, quartzy 0～2%, sodium carbonate 0～1%, graphite 1～3%, ferrotungsten 20～50%, carbon ferrochrome 5～15%, vanadium iron 3～15%, potassium or sodium ferroalloy 6～12%, molybdenum-iron 0～20%.
The core wire of surfacing welding adopts mild steel wire, as H08A.With above-mentioned alloying constituent, gas making, powder such as slag former and potassium or sodium ferroalloy are even, and adding concentration again is 45～50 ° of Be, and modulus is 2.4 bonding agent potassium sodium mixing water glass and spares, and is applied on the core wire, can use after the drying.Can be adopted carbon steel or steel alloy by the mother metal of built-up welding, the composition of its deposited metal is respectively by weight percentage: C0.5～1.5%, W5～20%, Cr0～15%, Mo0～10%, V0.5～3%.Adjust by composition, can obtain different deposited metal composition in the above-mentioned scope electrode coating.
High-speed steel surfacing welding of the present invention also can be with above-mentioned alloying constituent except that the coated electrode of making basic slag system, and the gas making slag former after containing potassium or sodium ferroalloy powder and mixing, adds thin steel band (as H08A) and rolls into flux-cored electrode tubular electrode.
High-speed steel surfacing welding of the present invention significantly improves the toughness and the hardness of deposited metal, and the deposited metal retained austenite is few, and can bear certain shock loading, impact flexibility reach 0.9～1.2 kilogram-metre/centimetre
2, HRC62-64, welding procedure is obviously improved, and crack resistance improves, heated work pieces in advance not during than small size, single-layer surfacing, preheat temperature is lower during the large tracts of land multiple-bead deposit.Use under welded condition, technology is simple, and cost is low, is easy to promote the use of.
Embodiment:
Adopt the H08A core wire, one of proportioning of coating composition is by weight percentage: marble 20%, fluorite 7%, quartz 1%, sodium carbonate 1%, carbon ferrochrome 10%, ferrotungsten 40%, vanadium iron 10%, graphite 2%, sodium ferroalloy 9%.
Contain sodium 10～15% in the wherein above-mentioned sodium ferroalloy, siliceous＜15% is broken into the sodium iron alloy powder Powdered, 60 orders sieve, and the dry method passivation is 2 hours in 300～350 ℃ of air, use the potassium permanganate water dope wet method passivation of 1/1000 concentration again, the oven dry rolling is broken then, and 16 orders sieve.
Various powder chemical analysis and granularity in the above-mentioned prescription must meet " welding rod raw material technical standard ".
After dry powder blend is even, add 45～50 ° of Be of concentration again, modulus is 2.4 potassium sodium mixing water glass bond.Weight is 16～18% of dry powder total amount.Mix thoroughly with mixer.Adopt conventional extrusion technology, will with the pulpous state scolder after even, with hydraulic type electrode extrusion press extrusion on the H08A core wire.The surfacing welding that extrusion is good must be through low temperature airing and hyperthermia drying.
Claims (3)
1, high-speed steel surfacing welding, feature of the present invention are to add an amount of alkali metal in the coating of described surfacing welding.The proportioning of its coating composition is respectively marble (or magnesia) 10～20% by weight percentage, fluorite 5～10%, quartzy 0～2%, sodium carbonate 0～1%, graphite 1～3%, ferrotungsten 20～50%, carbon ferrochrome 5～15%, vanadium iron 5～15%, molybdenum-iron 0～20%, potassium or sodium ferroalloy 6～12%.
2, surfacing welding according to claim 1 is characterized in that potassium or sodium ferroalloy contain potassium or sodium 10～15%(weight).
3, according to claim 1,2 described surfacing weldings, it is characterized in that potassium or sodium ferroalloy siliceous＜15%(weight).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85109045 CN1008334B (en) | 1985-12-13 | 1985-12-13 | The high-speed steel surfacing welding of alkali metal containing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85109045 CN1008334B (en) | 1985-12-13 | 1985-12-13 | The high-speed steel surfacing welding of alkali metal containing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109045A true CN85109045A (en) | 1987-06-24 |
| CN1008334B CN1008334B (en) | 1990-06-13 |
Family
ID=4796219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85109045 Expired CN1008334B (en) | 1985-12-13 | 1985-12-13 | The high-speed steel surfacing welding of alkali metal containing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008334B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107627045A (en) * | 2017-11-09 | 2018-01-26 | 湖州高恒电梯配件有限公司 | A kind of welding wire for welding elevator guide shoe plate |
| CN113927205A (en) * | 2021-11-20 | 2022-01-14 | 大连金科精密合金材料制造有限公司 | High-speed tool steel welding rod and preparation method thereof |
-
1985
- 1985-12-13 CN CN 85109045 patent/CN1008334B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107627045A (en) * | 2017-11-09 | 2018-01-26 | 湖州高恒电梯配件有限公司 | A kind of welding wire for welding elevator guide shoe plate |
| CN113927205A (en) * | 2021-11-20 | 2022-01-14 | 大连金科精密合金材料制造有限公司 | High-speed tool steel welding rod and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008334B (en) | 1990-06-13 |
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