CN105033509A - Preparation method of compound tungsten-base tubular welding rod hard-face material - Google Patents
Preparation method of compound tungsten-base tubular welding rod hard-face material Download PDFInfo
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- CN105033509A CN105033509A CN201510384142.7A CN201510384142A CN105033509A CN 105033509 A CN105033509 A CN 105033509A CN 201510384142 A CN201510384142 A CN 201510384142A CN 105033509 A CN105033509 A CN 105033509A
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- tungsten carbide
- welding rod
- face material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Abstract
The invention discloses a preparation method of a compound tungsten-base tubular welding rod hard-face material. The preparation method of the compound tungsten-base tubular welding rod hard-face material is characterized in that the raw materials comprise, by weight, 50-65 parts of cemented carbide pellets, 10-12 parts of spheroidal tungsten carbide, 10-30 parts of casting granular tungsten carbide, 6-8 parts of single crystal granular tungsten carbide, 1-2 parts of silicon nitride ceramic particles, 2.5-4.5 parts of silicon-manganese powder and 0.5 part of phenolic resin; the method comprises the steps that the raw materials of the cemented carbide pellets, the spheroidal tungsten carbide, the casting granular tungsten carbide, the single crystal granular tungsten carbide, the silicon nitride ceramic particles and the silicon-manganese powder are mixed for 1-4 h in a mixing machine according to the proportions, and a mixture is obtained; after the mixture obtained in the first step is discharged, the phenolic resin is added in the mixture according to the proportion for even stirring and drying in a drying box, the mixture is maintained for 3 h at 100 DEG C, the mixture is maintained for 3 h at 150 DEG C, and the finished product tubular welding rod hard-face material is obtained after the processed product is taken out of the drying box. The preparation method of the compound tungsten-base tubular welding rod hard-face material is mainly used for preparing the compound tungsten-base tubular welding rod hard-face material.
Description
Technical field
The present invention relates to a kind of preparation method of welding rod hard material, particularly relate to a kind of preparation method of composite tungsten base flux-cored electrode tubular electrode hard material.
Background technology
Existing tungsten base flux-cored electrode tubular electrode adopts single tungsten base hard material abroad, and as cast tungsten carbide (WC) and spherical WC, due to casting WC, the hardness of spherical WC is high, fragility large, and do not having under the condition of impacting, anti-wear performance accesses embodiment.But under the condition having impact, as the rock bit in petroleum drilling and mining, oil and natural gas pass through reamer, because impact is very large, casting WC, spherical WC are the eutectics of WC and W2C, structure in the form of sheets, shock resistance extreme difference, very fast hardstanding cracks, and falls limit, come off, drill and petroleum extraction tools damages very soon.Germany DURMAT; Switzerland SUZER all adopts single casting WC and single spherical WC to produce flux-cored electrode tubular electrode.
Cemented carbide pellet is introduced flux-cored electrode tubular electrode by U.S. KENNALMETAL, adopts cemented carbide pellet to produce flux-cored electrode tubular electrode with casting WC.Cemented carbide pellet contains bonded metal-cobalt, and cemented carbide pellet hardness is low, and toughness, intensity are high, though wearability is poor, but shock resistance is high.
Domestic flux-cored electrode tubular electrode, major part adopts casting WC to produce flux-cored electrode tubular electrode, there is not yet the report adopting the silicon nitride ceramic particles of cemented carbide pellet, spherical tungsten carbide and surface coating Ni-Ti to produce flux-cored electrode tubular electrode.
In petroleum drilling and mining industry, the gear wheel of steel tooth bit, and the shirttail of the bit leg of insert bit, with steel-tooth and the gauge of passing through reamer, due to these drill and petroleum extraction toolses at work, not only to afford strong wearing and tearing, also will bear strong impact, general employing at its surface overlaying tungsten base hard material, to increase the wear-resistant of face tooth.The shortcoming of prior art is: 1. single hard material flux-cored electrode tubular electrode due to hardness high, fragility is large, and the toughness of cutting edge and intensity can not ensure, produces hardstanding fracture, falls limit, causes that instrument is useless to be damaged.2. the flux-cored electrode tubular electrode shock resistance of cemented carbide pellet and the compound hard material of casting WC is improved, but because the hardness of cemented carbide pellet is too low, and content is too much, wearability is subject to larger impact, can not meet the requirement under the wear-resistant and shock proof condition of harshness.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of composite tungsten base flux-cored electrode tubular electrode hard material, to overcome above-mentioned shortcoming.
For achieving the above object, technical solution of the present invention is: a kind of preparation method of composite tungsten base flux-cored electrode tubular electrode hard material, is characterized in that following steps, and wherein, the weight proportion of raw material is:
(1) cemented carbide pellet 50-65 part, (2) spherical tungsten carbide 10-12 part, (3) cast granular tungsten carbide 10-30 part, (4) monocrystalline granular tungsten carbide 6-8 part, (5) silicon nitride ceramic particles 1-2 part, (6) silicomanganese powder 2.5-4.5 part, 0.5 part, (7) phenolic resins;
Described step is as follows:
A. raw material (1), (2), (3), (4), (5), (6) are mixed 1-4 hour according to the above ratio in mixer, obtain mixture;
B. add raw material (7) after being drawn off by the mixture that steps A obtains according to the above ratio to stir and to dry in drying baker, keep 3 hours at 100 DEG C, keep 3 hours at 150 DEG C, after outlet, be finished product flux-cored electrode tubular electrode hard material.
The invention has the beneficial effects as follows: by above-mentioned steps process, by the cemented carbide pellet of spherical tungsten carbide (superhigh temperature atomized spherical WC), homemade high-quality low-porosity, cast granular WC, the granular WC of monocrystalline, silicon nitride ceramic particles that surface is coated with Ni-Ti perfectly combines, this hard material is not only shock-resistant, and it is wear-resistant, define a kind of novel stiff dough high-abrasive material, produce again that to have wearability high, impact-resistant flux-cored electrode tubular electrode.
Table 1: the kind of tungsten base hard material and performance
Be not difficult to find out from table 1: the hardness of cemented carbide pellet is minimum, compression strength and bending strength the highest, this illustrate cemented carbide pellet toughness and intensity the highest, shock resistance is also the highest, otherwise because hardness is minimum, wearability is the poorest.Spherical WC(atomized spherical WC) hardness the highest, wearability is best, owing to being spherical, shock resistance difference, but be also better than casting WC, casting WC and monocrystalline WC hardness all very high, but shock resistance compare the poorest.
Adopt the welding rod of single tungsten base hard material, the combination property of stiff dough welding rod can not be fully demonstrated.Wearability and shock proof performance can not be taken into account.
Cemented carbide pellet, spherical WC are owing to being spherical, less with the resistance of machined surface, and when impacting larger, spherical WC and cemented carbide pellet can bear larger impulsive force, and are unlikelyly crashed.Adopt less granular casting WC, and less spherical atomization WC, and less cemented carbide pellet is the space in order to fill between large ball, make the content of the hard phase of hardstanding higher, wearability is better.
Detailed description of the invention
Below in conjunction with embodiment, the present invention and detailed description of the invention thereof are described in further detail.
The invention is characterized in following steps, wherein, the weight proportion of raw material is:
(1) cemented carbide pellet 50-65 part, (2) spherical tungsten carbide 10-12 part, (3) cast granular tungsten carbide 10-30 part, (4) monocrystalline granular tungsten carbide 6-8 part, (5) silicon nitride ceramic particles 1-2 part, (6) silicomanganese powder 2.5-4.5 part, 0.5 part, (7) phenolic resins;
Described step is as follows:
A. raw material (1), (2), (3), (4), (5), (6) are mixed 1-4 hour according to the above ratio in mixer, obtain mixture;
B. add raw material (7) after being drawn off by the mixture that steps A obtains according to the above ratio to stir and to dry in drying baker, keep 3 hours at 100 DEG C, keep 3 hours at 150 DEG C, after outlet, be finished product flux-cored electrode tubular electrode hard material.
Below provide embodiments of the invention.
Example 1
A. by raw material: (1) 50 part, (2) 10 parts, (3) 30 parts, (4) 6 parts, (5) 1 parts, (6) 2.5 parts mix 2 hours, obtain mixture in mixer.
B. add raw material (7) 0.5 parts after being drawn off by the mixture obtained and stir that (phenolic resins mixes with absolute alcohol, dissolve at 60 DEG C and pour into again in mixture) dry in drying baker, keep 3 hours at 100 DEG C, then be warming up to 150 DEG C to keep 3 hours, after outlet, namely obtain finished product flux-cored electrode tubular electrode hard material.
Example 2
Raw material: (1) 60 part, (2) 12 parts, (3) 14 parts, (4) 8 parts, (5) 1.5 parts, (6) 4 parts, all the other are with example 1.
Example 3
Raw material: (1) 62 part, (2) 11 parts, (3) 10 parts, (4) 7 parts, (5) 2 parts, (6) 4.5 parts, all the other are with example 1.
The chemical composition of described silicon nitride ceramic particles is Si3N4, has commercially available.
Carbide alloy ball particle system applicant make by oneself, its chemical composition is tungsten carbide (WC) 94%(% by weight), Co6%.
Spherical tungsten carbide, to cast granular tungsten carbide and the granular tungsten carbide of monocrystalline be all that Great Wall, Zi Gong hard material Co., Ltd produces, and has commercially available.
Silicomanganese powder manufacturer is Shanghai nine ancient cooking vessel dusty material Co., Ltd, has commercially available.
Phenolic resins manufacturer is the sky, Bengbu high-temperature resin Materials Co., Ltd, has commercially available.
Described mixed stocker is dry mixed, and mixer system applicant makes by oneself.
Claims (1)
1. a preparation method for composite tungsten base flux-cored electrode tubular electrode hard material, is characterized in that following steps, and wherein, the weight proportion of raw material is:
(1) cemented carbide pellet 50-65 part, (2) spherical tungsten carbide 10-12 part, (3) cast granular tungsten carbide 10-30 part, (4) monocrystalline granular tungsten carbide 6-8 part, (5) silicon nitride ceramic particles 1-2 part, (6) silicomanganese powder 2.5-4.5 part, 0.5 part, (7) phenolic resins;
Described step is as follows:
A. raw material (1), (2), (3), (4), (5), (6) are mixed 1-4 hour according to the above ratio in mixer, obtain mixture;
B. add raw material (7) after being drawn off by the mixture that above-mentioned steps A obtains according to the above ratio to stir and to dry in drying baker, keep 3 hours at 100 DEG C, keep 3 hours at 150 DEG C, after outlet, be finished product flux-cored electrode tubular electrode hard material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105382439A (en) * | 2015-12-16 | 2016-03-09 | 郑州机械研究所 | Tubular braze coating material |
| CN108103379A (en) * | 2017-12-15 | 2018-06-01 | 中石化江钻石油机械有限公司 | A kind of high-wearing feature TC bearings and preparation method thereof |
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| CN101168221A (en) * | 2007-11-26 | 2008-04-30 | 苏州江钻新锐硬质合金有限公司 | Tubular hard surface overlaying material |
| WO2008079285A1 (en) * | 2006-12-21 | 2008-07-03 | Baker Hughes Incorporated | A hardfacing material for hardfacing earth boring bits used in abrasive wear environments and a method of manufacturing the same |
| CN101380698A (en) * | 2008-10-09 | 2009-03-11 | 苏州江钻新锐硬质合金有限公司 | Novel tubular hard surfacing material |
| WO2013063766A1 (en) * | 2011-11-01 | 2013-05-10 | 江汉石油钻头股份有限公司 | Tube welding rod resistant to low stress abrasion |
| CN104646849A (en) * | 2015-01-04 | 2015-05-27 | 苏州新锐合金工具股份有限公司 | Tungsten carbide tubular welding rod for hard-surface overlay welding |
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2015
- 2015-07-03 CN CN201510384142.7A patent/CN105033509B/en active Active
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| WO2008079285A1 (en) * | 2006-12-21 | 2008-07-03 | Baker Hughes Incorporated | A hardfacing material for hardfacing earth boring bits used in abrasive wear environments and a method of manufacturing the same |
| CN101168221A (en) * | 2007-11-26 | 2008-04-30 | 苏州江钻新锐硬质合金有限公司 | Tubular hard surface overlaying material |
| CN101380698A (en) * | 2008-10-09 | 2009-03-11 | 苏州江钻新锐硬质合金有限公司 | Novel tubular hard surfacing material |
| WO2013063766A1 (en) * | 2011-11-01 | 2013-05-10 | 江汉石油钻头股份有限公司 | Tube welding rod resistant to low stress abrasion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105382439A (en) * | 2015-12-16 | 2016-03-09 | 郑州机械研究所 | Tubular braze coating material |
| CN108103379A (en) * | 2017-12-15 | 2018-06-01 | 中石化江钻石油机械有限公司 | A kind of high-wearing feature TC bearings and preparation method thereof |
| CN108103379B (en) * | 2017-12-15 | 2020-02-18 | 中石化江钻石油机械有限公司 | High-wear-resistance TC bearing and preparation method thereof |
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| CN105033509B (en) | 2018-04-13 |
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