CN1003430B - High-hardness wear-resistant will not thermal reactor welding rod - Google Patents
High-hardness wear-resistant will not thermal reactor welding rod Download PDFInfo
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- CN1003430B CN1003430B CN86101106.6A CN86101106A CN1003430B CN 1003430 B CN1003430 B CN 1003430B CN 86101106 A CN86101106 A CN 86101106A CN 1003430 B CN1003430 B CN 1003430B
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Abstract
Welding rod for non-preheating bead welding with superior hardness and anti-abrasiveness, surfacing hardness HRC >=58 under normal temperature, not preheating, layer flawless.Its main raw materials in proportion is by weight percentage: marble 13 to 25, fluorite 2 to 8, high carbon ferro-chrome 5 to 20, titanium dioxide 0.5 to 3, mid-carbon fe-mn 3 to 8, molybdenum-iron 8 to 20, tungsten powder 1.5 to 6, vanadium iron 10 to 20, graphite 0.8 to 4, quartz 0.8 to 2, ferrotianium 2 to 3.Be applicable to cold conditions built-up welding on low, medium carbon steel and low, medium alloy constructional steel; Not preheating before weldering, postwelding can not heat-treated.
Description
The resurfacing welding material of the high rigidity (HRC > 50) of China and countries in the world must carry out preheating in weld deposit process, postwelding must carry out slow cooling, even carry out post weld heat treatment, otherwise must there is crackle in deposited metal, particularly in the time of the enterprising windrow weldering of large rigidity part, even if adopt said welding method measure, sometimes be still difficult to eliminate crackle.
Following two kinds of welding rod main components and performance that for example the U.S. adopts are as follows: (data are taken from the publication " application choice of hardened surface hardfacing alloy and welding method thereof " in June, 1973 that Science and Technology of Shanghai information institute compiles):
| Numbering | C | Mn | Si | Cr | W | Mo | V | Preheat | Layer thickness | |
| 1 | 0.35 | 0.3-0.4 | 4.75-5.25 | 3.0-3.50 | 2.5-3.00 | 0.3-0.4 | 510℃ | HRC54-57 | ||
| 2 | 0.85 | 0.5 | 0.7 | 4.0 | 6.0 | 5.0 | 2.0 | Must preheating | HRC55-60 |
Above-mentioned two kinds of welding rods carry out must carrying out preheating to workpiece before built-up welding.
Therefore,, for a long time to carrying out preheating before the weldering of high-rigidity resurfacing welding layer, postwelding is heat-treated the universal rule that becomes a minimizing crackle tendency of people.Otherwise under high-rigidity resurfacing welding welding rod normal temperature unavoidably there is crackle in built-up welding.
Patent of the present invention is by selecting the content of various alloying elements in rational layer metal, to ensure within the scope of welding cooling velocity, make a certain stage that the most easily form crackle of deposited metal in cooling procedure, produce austenite to martensite transfor mation, even eliminate to reduce the tension existing in layer, thereby reach the generation of minimizing (even avoiding) crackle.Because what determine layer phase transition process and tissue mainly contains following two kinds of factors, i.e. cooling velocity and layer composition.Under certain welding condition, cooling velocity is certain, depends mainly on its composition.Through lot of experiments, take the percentage overlay cladding composition of following weight, can ensure that postwelding hardness reaches HRC
58-62, and do not crack:
| C | Cr | Mo | W | V | Mn | Si | S | P | Ti |
| 0.9-1.4 | 5-7 | 4-6 | 4-6 | 4-6 | 1.5-2.5 | 0.4-1.0 | ≤0.03 | ≤0.03 | 0.03-0.08 |
Welding rod provided by the invention is by certain electrode coating composition, and coating coefficient is in accordance with regulations made welding rod, under the strict welding conditions of specifying, carries out built-up welding and obtains above-mentioned layer composition.
Electrode coating composition percentage by weight is as follows:
| Marble | Fluorite | High carbon ferro-chrome | Titanium dioxide | Mid-carbon fe-mn | Molybdenum-iron | Tungsten powder | Vanadium iron | Graphite | Quartz | Ferrotianium |
| 13-25 | 2-8 | 5-20 | 0.5-3 | 3-8 | 8-20 | 1.5-6 | 10-20 | 0.8-4 | 0.8-2 | 2-3 |
Core wire material: H08A; Coating coefficient: 1.0-1.5; Welding current kind: DC reverse connection; Welding conditions: φ 4(mm) I:150-200A
The present invention is owing to having These characteristics, and therefore this welding rod does not crack in the enterprising windrow weldering of larger rigidity part, and post welding distortion is little, need not carry out weld preheating and post weld heat treatment.
Embodiment 1: Fig. 1 is the roll shaft of the single roll crusher in the Sintering Process of Iron Making that rigidity is larger.This shaft material: No. 35 cast steels; Condition of heat treatment: modified; Size: see accompanying drawing 1.Electrode coating composition is with above-mentioned; Core wire material: H08A; Coating coefficient: 1.0-1.5.Welding current kind: DC reverse connection; Welding conditions: φ 4(mm) I:150-200A; Welding position: axle and pawl; Overlay cladding composition is with above-mentioned.Built-up welding under normal temperature, not preheating before weldering, not heat treatment of postwelding, all there is not crackle in overlay cladding, overlay cladding normal temperature hardness HRC >=58, average hardness HV595 500 DEG C time, anti-wear performance is good.At present this welding rod for the production of.
Embodiment 2: Fig. 2 is certain battlebus driving wheel gear ring schematic diagram.Gear ring material: 20CrMnSiNi2; The gear ring strength of materials: 110-120kg/mm
2(HRC47); Gear ring size: see accompanying drawing 2.Electrode coating composition, core wire material, coating coefficient and welding current kind, welding conditions are all with embodiment 1.Surfacing part: disposable built-up welding 5mm is thick on gear ring surface.Overlay cladding composition is with above-mentioned.Built-up welding under normal temperature, not preheating before weldering, not heat treatment of postwelding, overlay cladding flawless, after measured hardness HRC >=58.This gear ring heap postwelding, through at home and abroad-40 DEG C to 40 DEG C preventing tests of battlebus, its mileage number is greater than 6000 kilometers.This welding rod has been applied aborning more than 5 years, has produced altogether more than 600 gear ring.There is crackle in none in use both at home and abroad.
Claims (2)
1, welding rod for non-preheating bead welding with superior hardness and anti-abrasiveness, made by calcite and fluorite, high carbon ferro-chrome, titanium dioxide, mid-carbon fe-mn, molybdenum-iron, tungsten powder, vanadium iron, graphite, quartz, ferrotianium, H08A core wire, waterglass etc., it is characterized in that the proportioning of coating primary raw material is by weight percentage: marble 13 to 25, fluorite 2 to 8, high carbon ferro-chrome 5 to 20, titanium dioxide 0.5 to 3, mid-carbon fe-mn 3 to 8, molybdenum-iron 8 to 20, tungsten powder 1.5 to 6, vanadium iron 10 to 20, graphite 0.8 to 4, quartz 0.8 to 2, ferrotianium 2 to 3.Coating coefficient: 1.0-1.5.
2, by the not preheating surfacing welding rod of claim 1, it is characterized in that the composition percentage by weight of overlay cladding is: carbon 0.9 to 14, chromium 5 to 7, molybdenum 4 to 6, tungsten 4 to 6, vanadium 4 to 6, manganese 1.5 to 2.5, silicon 0.4 to 1.0, sulphur are less than or equal to 0.03, phosphorus is less than or equal to 0.03, titanium 0.03 to 0.08.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101106.6A CN1003430B (en) | 1986-01-18 | 1986-01-18 | High-hardness wear-resistant will not thermal reactor welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101106.6A CN1003430B (en) | 1986-01-18 | 1986-01-18 | High-hardness wear-resistant will not thermal reactor welding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86101106A CN86101106A (en) | 1987-02-11 |
| CN1003430B true CN1003430B (en) | 1989-03-01 |
Family
ID=4801296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86101106.6A Expired CN1003430B (en) | 1986-01-18 | 1986-01-18 | High-hardness wear-resistant will not thermal reactor welding rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003430B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051037C (en) * | 1996-09-13 | 2000-04-05 | 沈阳工业高等专科学校 | Surfacing welding electrode with crack-resistance for cold welding of blast furnace valve |
| CN1053853C (en) * | 1996-10-18 | 2000-06-28 | 宇永福 | Abrasion-resistant surfacing welding electrode for concrete transfer pump |
| CN1056796C (en) * | 1996-10-28 | 2000-09-27 | 湘潭大学 | Surfacing welding electrode for mold |
| CN101537544B (en) * | 2009-04-28 | 2011-03-23 | 天津市金桥焊材集团有限公司 | Electric welding rod for welding large scale low temperature spherical tank steel |
| CN103406688B (en) * | 2013-08-22 | 2016-02-17 | 广州市白云区鑫钻耐磨材料厂 | Wear resistant composite alloy antistripping surfacing welding electrode and preparation method thereof |
| CN103481010B (en) * | 2013-09-17 | 2016-01-13 | 柳州市三龙耐磨焊接科技有限公司 | A kind of full-automatic online cold welding pattching roll squeezer technique |
| CN105458555A (en) * | 2015-12-10 | 2016-04-06 | 无锡普瑞明思机械制造有限公司 | High-strength wear-resisting welding rod |
-
1986
- 1986-01-18 CN CN86101106.6A patent/CN1003430B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN86101106A (en) | 1987-02-11 |
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