CN1244431C - Tube-like tungsten carbonate welding bar - Google Patents

Tube-like tungsten carbonate welding bar Download PDF

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Publication number
CN1244431C
CN1244431C CN 02139240 CN02139240A CN1244431C CN 1244431 C CN1244431 C CN 1244431C CN 02139240 CN02139240 CN 02139240 CN 02139240 A CN02139240 A CN 02139240A CN 1244431 C CN1244431 C CN 1244431C
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CN
China
Prior art keywords
tungsten carbide
powder
tubular
filler
electrode
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CN 02139240
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Chinese (zh)
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CN1404956A (en
Inventor
张烈华
吴建
肖岸
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江汉石油钻头股份有限公司
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Priority to CN 02139240 priority Critical patent/CN1244431C/en
Publication of CN1404956A publication Critical patent/CN1404956A/en
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Publication of CN1244431C publication Critical patent/CN1244431C/en

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Abstract

The present invention relates to a tubular tungsten carbide welding rod used as a hard facing material. The present invention can be used for strengthening tooth surfaces and palm tips of a steel tooth bit, strengthening palm tips of an insertion rock bit, and strengthening the surface of other steel materials. The present invention comprises a welded tube and filling material arranged in the welded tube, wherein the stuffing materials comprise sintered tungsten carbide granules, alloy powder and organic binder; the granularity distribution of the sintered tungsten carbide granules is 0 to 80% of 20 to 30 meshes and 20 to 100% of 30 to 40 meshes; casting tungsten carbide granules can be added in the filling materials; the filling materials has the components of 60 to 95% of the sintered tungsten carbide granules, 0 to 35% of the casting tungsten carbide granules, 2 to 6% of the alloy powder and 0.5 to 2% of the organic binder according to the weight proportion. Because the granularity of the sintered tungsten carbide granules arranged in the filling materials of the welding rod is refined, the erosion wear resistant capability of a welding layer is enhanced, and hard granules arranged in a hard facing layer are difficult to drop off. Thus, the integral wear resistance of the hard facing layer formed by the welding rod is greatly improved.

Description

A kind of tubular tungsten carbide welding rod
Technical field
The present invention relates to a kind of tubular tungsten carbide welding rod, be used as hardfacing materials, the flank of tooth, the shirttail that can be used for steel tooth bit are strengthened, and the reinforcement of the shirttail of insert bit, also can be used for the surface peening of other steel part material.
Background technology
The performance that improves the rock bit flank of tooth and the wear-resisting deposited layer of shirttail is to improve one of the rock bit serviceability and the key issue in life-span.The tubulose WC welding rod that with the cemented tungsten carbide particles is main stuffing is widely used on the wear-resisting deposited layer of rock bit.Theory and practice shows that all the inefficacy of wear-resisting deposited layer has two kinds of forms on the rock bit, and a kind of is that the abrasion resistant particles of hard in the wear-resisting deposited layer is worn, and another kind is that the soft bonding of wear-resisting deposited layer is caused abrasion resistant particles to come off by erosion.Cemented tungsten carbide particles mainly influences first kind of failure mode as itself wearability of the main stuffing of tubular tungsten carbide welding rod, and size distribution then influences second kind of failure mode.Tubular tungsten carbide welding rod of the prior art is a main stuffing with the spherical sintered WC particle, its particle size range mainly concentrates on the 16-30 order, wherein the 16-20 order accounts for 45-50%, the 20-30 order accounts for 45-50%, therefore the spacing between the hard particles is relatively large in overlay cladding, and rock bit bonds in the overlay cladding in the underground work process and relatively more easily is worn, and causes that thus hard particles comes off in the overlay cladding, thereby reduced the wearability of deposited layer, reduced the service life of rock bit.
Summary of the invention
Problem to be solved by this invention is the deficiency that exists at above-mentioned prior art and the tubular tungsten carbide welding rod that provides a kind of erosion-wear-resisting performance that makes its deposited layer further to be optimized.
The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: include welded tube and the filler that is loaded in the welded tube, described filler comprises cemented tungsten carbide particles, alloyed powder and organic binder bond, its difference is that the size distribution of described cemented tungsten carbide particles is designated as by weight: 20~30 orders account for 0~80%, and 30~40 orders account for 20~100%.
Press such scheme, adding in the filler has casting carbon tungsten carbide particle, and the component of described filler is designated as by weight: cemented tungsten carbide particles 60~95%, casting carbon tungsten carbide particle 0~35%, alloyed powder 2~6%, organic binder bond 0.5~2%.
Described alloyed powder comprises ferrosilicon powder, ferromanganese powder, manganese powder, niobium powder, the combination of above-mentioned any one or multiple alloyed powder; Organic binder bond is an organic resin.
Welded tube is that tubulose is made by cold-rolled low carbon steel band or nickel alloy strip or the cobalt alloy roll coil of strip, and pipe thickness is controlled at 0.1~0.5mm.The shared flux-cored electrode tubular electrode weight ratio of filler is 60~80%.
Beneficial effect of the present invention has been owing to refinement the granularity of cemented tungsten carbide particles in the welding rod filler, thereby improved the erosion-wear-resisting ability of deposited layer, make hard particles difficult drop-off in the overlay cladding, thereby the overall wear resistance of the formed wearable overlay of this welding rod is greatly improved.
The specific embodiment
Below further introduce embodiments of the invention.
Embodiment 1: the filler of flux-cored electrode tubular electrode is remembered by weight by following component and is formed: cemented tungsten carbide particles 70~80%, granularity 20~30 orders account for 40~45%, 30~40 orders account for 55~60%, casting carbon tungsten carbide particle 12~23%, granularity 40~200 orders, the mixture 5~6% of ferrosilicon powder, ferromanganese powder, manganese powder and niobium powder, organic resin 1~2%.The shared flux-cored electrode tubular electrode weight ratio of filler is 65%; Cemented tungsten carbide particles is sphere or elliposoidal, and the alloy adhesive in the cemented tungsten carbide particles is cobalt powder, nickel powder or iron powder, does binding agent and spheric granules best results with cobalt powder.The damp sand wear test result of present embodiment shows, the wearability that this welding rod applies the wearing layer of weldering is compared with existing similar welding rod and improved 30~50%, carries out on-the-spot contrast experiment and also shown remarkable advantages on rock bit.
Embodiment 2: the filler of flux-cored electrode tubular electrode is remembered by weight by following component and is formed: cemented tungsten carbide particles 80~90%, granularity 30~40 orders, casting carbon tungsten carbide particle 4~14%, granularity 40~200 orders, the mixture 5~6% of ferrosilicon powder, ferromanganese powder, manganese powder and niobium powder, organic resin 1~2%.The shared flux-cored electrode tubular electrode weight ratio of filler is 67%.Other situation is identical with a last embodiment.The damp sand wear test result of present embodiment shows, the wearability that this welding rod applies the wearing layer of weldering is compared with existing similar welding rod and improved 30~60%, carries out on-the-spot contrast experiment and also shown remarkable advantages on rock bit.
Embodiment 3: the filler of flux-cored electrode tubular electrode is remembered by weight by following component and is formed: cemented tungsten carbide particles 70~90%, granularity 20~30 orders account for 55~65%, 30~40 orders account for 35~45%, casting carbon tungsten carbide particle 5~23%, granularity 40~200 orders, the mixture 4~5% of ferrosilicon powder, ferromanganese powder, manganese powder and niobium powder, organic resin 1%.The shared flux-cored electrode tubular electrode weight ratio of filler is 68%.The damp sand wear test result of present embodiment shows, the wearability that this welding rod applies the wearing layer of weldering is compared with existing similar welding rod and improved 20~50%, carries out on-the-spot contrast experiment and also shown effect preferably on rock bit.

Claims (10)

1, a kind of tubular tungsten carbide welding rod, include welded tube and the filler that is loaded in the welded tube, described filler comprises cemented tungsten carbide particles, alloyed powder and organic binder bond, the size distribution that it is characterized in that described cemented tungsten carbide particles is designated as by weight: 20~30 orders account for 0~80%, and 30~40 orders account for 20~100%.
2, by the described tubular tungsten carbide welding rod of claim 1, it is characterized in that adding has casting carbon tungsten carbide particle in the filler, the component of described filler is designated as by weight: cemented tungsten carbide particles 60~95%, casting carbon tungsten carbide particle 0~35%, alloyed powder 2~6%, organic binder bond 0.5~2%.
3,, it is characterized in that described alloyed powder comprises ferrosilicon powder, ferromanganese powder, manganese powder, niobium powder, the combination of above-mentioned any one or multiple alloyed powder by claim 1 or 2 described tubular tungsten carbide welding rods; Organic binder bond is an organic resin.
4, by claim 1 or 2 described tubular tungsten carbide welding rods, it is characterized in that welded tube is that tubulose is made by cold-rolled low carbon steel band or nickel alloy strip or the cobalt alloy roll coil of strip, pipe thickness is controlled at 0.1~0.5mm.
5, by claim 1 or 2 described tubular tungsten carbide welding rods, it is characterized in that the shared flux-cored electrode tubular electrode weight ratio of filler is 60~80%.
6, by the described tubular tungsten carbide welding rod of claim 3, the filler that it is characterized in that flux-cored electrode tubular electrode is remembered by weight by following component and is formed: cemented tungsten carbide particles 70~80%, granularity 20~30 orders account for 40~45%, 30~40 orders account for 55~60%, casting carbon tungsten carbide particle 12~23%, granularity 40~200 orders, the mixture 5~6% of ferrosilicon powder, ferromanganese powder, manganese powder and niobium powder, organic resin 1~2%, the shared flux-cored electrode tubular electrode weight ratio of filler is 65%.
7, by the described tubular tungsten carbide welding rod of claim 3, the filler that it is characterized in that flux-cored electrode tubular electrode is remembered by weight by following component and is formed: cemented tungsten carbide particles 80~90%, granularity 30~40 orders, casting carbon tungsten carbide particle 4~14%, granularity 40~200 orders, the mixture 5~6% of ferrosilicon powder, ferromanganese powder, manganese powder and niobium powder, organic resin 1~2%, the shared flux-cored electrode tubular electrode weight ratio of filler is 67%.
8, by the described tubular tungsten carbide welding rod of claim 3, the filler that it is characterized in that flux-cored electrode tubular electrode is remembered by weight by following component and is formed: cemented tungsten carbide particles 70~90%, granularity 20~30 orders account for 55~65%, 30~40 orders account for 35~45%, casting carbon tungsten carbide particle 5~23%, granularity 40~200 orders, the mixture 4~5% of ferrosilicon powder, ferromanganese powder, manganese powder and niobium powder, organic resin 1%, the shared flux-cored electrode tubular electrode weight ratio of filler is 68%.
9, by claim 1 or 2 described tubular tungsten carbide welding rods, it is characterized in that cemented tungsten carbide particles is sphere or elliposoidal.
10, by claim 1 or 2 described tubular tungsten carbide welding rods, it is characterized in that the alloy adhesive in the cemented tungsten carbide particles is cobalt powder, nickel powder or iron powder.
CN 02139240 2002-11-04 2002-11-04 Tube-like tungsten carbonate welding bar CN1244431C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02139240 CN1244431C (en) 2002-11-04 2002-11-04 Tube-like tungsten carbonate welding bar

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Application Number Priority Date Filing Date Title
CN 02139240 CN1244431C (en) 2002-11-04 2002-11-04 Tube-like tungsten carbonate welding bar

Publications (2)

Publication Number Publication Date
CN1404956A CN1404956A (en) 2003-03-26
CN1244431C true CN1244431C (en) 2006-03-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102223982A (en) * 2008-11-21 2011-10-19 卡特彼勒公司 Abrasion resistant composition

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100400218C (en) * 2004-03-31 2008-07-09 江汉石油钻头股份有限公司 Wearable tubular welding rod made from tungsten carbide
CN100548565C (en) * 2007-11-26 2009-10-14 苏州新锐硬质合金有限公司 A kind of tubular hard surface overlaying material
CN101380698B (en) * 2008-10-09 2011-08-10 苏州新锐硬质合金有限公司 Novel tubular hard surfacing material
CN101811233B (en) * 2009-08-31 2012-10-24 朱明生 Tungsten carbide welding rod and welding wire
CN102199718A (en) * 2011-05-04 2011-09-28 三一重工股份有限公司 Wear-resistant material, wear-resistant component, and manufacturing method thereof
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
CN102974956B (en) * 2012-11-29 2014-11-05 武汉铁锚焊接材料股份有限公司 Surfacing welding flux-cored wire
CN104227271B (en) * 2014-07-23 2016-01-20 深圳市威勒达科技开发有限公司 A kind of solder flux and preparation method thereof
CN104174964A (en) * 2014-08-20 2014-12-03 沧州格锐特钻头有限公司 Twice hardening method for surface of steel drill bit
CN104594805A (en) * 2015-01-04 2015-05-06 苏州新锐合金工具股份有限公司 Tri-cone bit with strong protection palm tips
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
US9869132B2 (en) 2015-02-04 2018-01-16 National Oilwell Varco, L.P. Wellsite hardfacing with particle distribution and method of using same
US9909395B2 (en) 2015-09-21 2018-03-06 National Oilwell DHT, L.P. Wellsite hardfacing with distributed hard phase and method of using same
CN105382439A (en) * 2015-12-16 2016-03-09 郑州机械研究所 Tubular braze coating material
CN110000487A (en) * 2019-04-18 2019-07-12 郑州机械研究所有限公司 A kind of enhanced tubulose medicine core carbine abrasion-proof welding rod of matrix
CN110394567A (en) * 2019-08-07 2019-11-01 西安石油大学 A kind of core-shell structure casting carbon tungsten carbide particle welding wire and preparation method thereof
CN110394569A (en) * 2019-08-07 2019-11-01 西安石油大学 A kind of core-shell structure casting carbon tungsten carbide particle welding rod and preparation method thereof
CN110394566A (en) * 2019-08-07 2019-11-01 西安石油大学 A kind of bilayer core-shell structure casting carbon tungsten carbide particle welding rod and preparation method
CN110394568A (en) * 2019-08-07 2019-11-01 西安石油大学 A kind of bilayer core-shell structure casting carbon tungsten carbide particle welding wire and preparation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102223982A (en) * 2008-11-21 2011-10-19 卡特彼勒公司 Abrasion resistant composition
CN102223982B (en) * 2008-11-21 2015-04-15 卡特彼勒公司 Abrasion resistant composition

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