CN101837520B - Anti-wear powder-cored wire for glass plate and cutting ring and preparation method thereof - Google Patents
Anti-wear powder-cored wire for glass plate and cutting ring and preparation method thereof Download PDFInfo
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- CN101837520B CN101837520B CN2010101425049A CN201010142504A CN101837520B CN 101837520 B CN101837520 B CN 101837520B CN 2010101425049 A CN2010101425049 A CN 2010101425049A CN 201010142504 A CN201010142504 A CN 201010142504A CN 101837520 B CN101837520 B CN 101837520B
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Abstract
The invention discloses an anti-wear powder-cored wire for a wear plate and a cutting ring and a preparation method thereof and belongs to the technical field of powder-cored wires. The sheath of the powder-cored wire is a pure Ni band, and the core part of the powder-cored wire is filled with mixed powder. The mixed powder comprises the following components in percentage by weight: 1 to 2 percent of Mo powder, 10 to 25 percent of NbC powder, 5 to 15 percent of TiB2 powder, 2 to 5 percent of Cr powder, 0.3 to 1 percent of Al powder and the balance of WC powder, wherein the mixed powder accounts for 65 to 90 weight percent of the powder-cored wire. The powder-cored wire and the preparation method have the advantages that: metal ceramic cladding layers are directly prepared on the working surfaces of the wear plate and the cutting ring and are combined with a substrate in a metallurgical mode; the method has simple processing steps and low cost; and the service life of the wear plate and the cutting ring can reach about 15,000 cubic meters/set.
Description
Technical field
The invention belongs to the flux cored wire technical field, a kind of flux cored wire that is used for cheater plate and cut ring abrasionproof and preparation method thereof particularly is provided, be used for the cheater plate and the cut ring of concrete pump.
Background technology
Concrete pump is a kind of machinery that generally uses in the current architectural engineering, and cheater plate and cut ring are the critical components in the concrete pump.The working face of cheater plate and cut ring is worked under heavy wear, shock loading, not only requires it to have enough intensity and impact flexibility, and requires it to have high wearability.In order to prolong the life-span of cheater plate and cut ring, current producer both at home and abroad mainly is employed in two kinds of methods such as build-up wear-resistant material and seting welding carbide piece on the steel matrix.
It is wear resistance electrode that welding method generally adopts Fe-Cr-C, on cheater plate and cut ring working face, prepares wearing layer; Mainly utilize M in the wearing layer
7C
3Hard improves material wear ability mutually, and wearing layer hardness is general≤65HRC.Because the wearing layer material works under harsh impact wear environment, the service life of cheater plate and cut ring is 3000-5000 cubic meter/cover only generally.
Through soldering the method that Hardmetal materials is set on the steel matrix is called seting welding carbide piece method, adopts this method, can cheater plate and cut ring life-span be brought up to 10000 cubic metres/cover.This method need have complex process, need to consume more WC-Co (Ni) carbide alloy, the higher characteristics of cost at cheater plate operative end surface and displacement contact area soldering carbide ring and piece.For guaranteeing that carbide ring and piece have enough intensity and toughness under wearing and tearing, impact loading, its thickness need reach 6-10mm, if thickness does not reach requirement, will produce the problem that hard alloy blocks ftractures, peels off and lost efficacy in advance.In addition, adopt soldering processes to be difficult to guarantee that the All Ranges of carbide alloy and steel matrix faying face has high bond strength, this with regard to be prone to cause carbide alloy under impact loading local fracture, peel off and inefficacy in advance.
Summary of the invention
The object of the present invention is to provide a kind of flux cored wire that is used for cheater plate and cut ring abrasionproof and preparation method thereof, can improve cheater plate and cut ring life-span, can reduce carbide alloy raw materials consumption and technology cost significantly again.
The present invention utilizes plasma arc, argon arc cladding method, at cheater plate, the special-purpose flux cored wire of cut ring working face cladding, can form thickness and decrease (W, Nb) C-TiB for the 3-6mm high abrasion
2/ Ni ceramic cladding layer-metal, cladding layer hardness can reach 1100-1600HV, and cladding layer and matrix reach metallurgical binding.The present invention has broken through existing carbide alloy welding-on existing hard alloy layer of technology and limitation such as substrate combinating strength is lower, cost is high, complex process, and utilizes nickel to substitute cobalt as the bonding phase.
The crust that is used for the flux cored wire of cheater plate and cut ring abrasionproof of the present invention is pure Ni band, and core is filled mixed-powder, and the percentage by weight of mixed-powder composition is: Mo powder: 1-2wt.%, NbC powder: 10-25wt.%, TiB
2Powder: 5-15wt.%, Cr powder: 2-5wt.%, Al powder: 0.3-1wt.%, WC powder: surplus.Its mixed-powder shared percentage by weight in flux cored wire is 65-90wt.%.
The processing step that the present invention's preparation is used for the flux cored wire of cheater plate and cut ring abrasionproof is:
(1) percentage by weight of the used dusty material of flux cored wire is: Mo powder (200-300 order, purity>=99.5%): 1-2wt.%, NbC powder (200-300 order, purity>=99.5%): 10-25wt.%, TiB
2Powder (200-300 order, purity>=99.5%): 5-15wt.%, Cr powder: (150-200 order, purity>=99.5%): 2-5wt.%, Al powder (200-300 order, purity>=99.6%): 0.3-1wt.%, WC powder (100-200 order, purity>=99.5%): surplus;
In the above powder: WC is as main wear-resistant ceramic phase, and Ni is as the bonding phase; The effect of NbC be form (W, Nb) the wear-resisting solid solution of C and form tiny NbC particle in mutually in bonding, thereby improve ceramic phase and mutually the wetability of boning; TiB
2Effect be the ceramic phase that in cladding layer, forms lath-shaped or needle-like, thereby improve the hardness and the wearability of cladding layer; The effect of Mo is to improve ceramic phase and bonding bond strength mutually, and the effect of Cr is intensity and the wearability that improves the bonding phase, and the effect of Al is to improve the non-oxidizability of ceramic cladding layer-metal in the high temperature cladding process;
(2) set by step (1) described proportion of powder takes by weighing required various powder, is called the powder core raw material;
(3) it is dry the said powder core raw material of step (2) to be put into drying box, and the drying box temperature is 100-120 ℃, and be 3-6 hour drying time;
(4) utilize planetary ball mill mixed powder core raw material, form the uniform mixed-powder of component;
(5) adopt pure nickel band parcel ball mill mixing powder to form flux cored wire, mixed-powder shared percentage by weight in flux cored wire is 65-90wt.%.
2, cladding layer preparation
Need during construction to treat that cladding workpiece (cheater plate or cut ring) marginal point solid welding fixes on the disk that can rotate; On the connecting rod that plasma arc or argon-arc welding gun are fixed on wig-wag links to each other; The wig-wag base is fixed on the adjustable for height straight-bar, but straight-bar is fixed on the dolly of moving linearly.Adopt workpiece to rotate or static, wig-wag base moving linearly or static, manually or the method for automatic feeding on cheater plate or cut ring working face, prepare ceramic cladding layer-metal.
When cheater plate was implemented melting and coating process, on the connecting rod that plasma (welding) torch is fixed on wig-wag links to each other, welding gun was vertical with workpiece clad can fusion, adopted manually or automatic feeding method, in required wear-resisting zone preparation ceramic cladding layer-metal (see figure 2).During concrete the construction, at first prepare ceramic cladding layer-metal 2 annular regions, adopt workpiece to rotate, the method that the wig-wag base is static prepares cladding layer; Speed of related movement through buncher control workpiece and welding gun; Thereby realize the overlap joint cladding of welding gun on workpiece; Through repeating the overlap joint cladding of cladding 2-3 time, adjacent welding bead (welding bead is defined as the cladding layer that single width that cladding forms is 10-15mm) on the same area, can obtain thickness is that 4-6mm, width are the ceramic cladding layer-metal of 15-30mm; Prepare ceramic cladding layer-metal at fan-shaped, delta-shaped region then, adopt workpiece to fix, the method for wig-wag base moving linearly prepares cladding layer; Speed of related movement, relative position through Electric Machine Control workpiece and welding gun; Thereby realize the overlap joint cladding of welding gun at the workpiece sector region; Through repeating the overlap joint cladding of cladding 2-3 time, adjacent welding bead on the same area, can obtain the ceramic cladding layer-metal that thickness is 4-6mm.
When the cut ring workpiece was implemented melting and coating process, welding gun was vertical with workpiece clad can fusion, adopted manually or automatic feeding method, prepared ceramic cladding layer-metal in required wear-resisting annular region.During concrete the construction, adopt workpiece to rotate, the method that the wig-wag base is static prepares cladding layer; Speed of related movement through buncher control workpiece and welding gun; Thereby realize the overlap joint cladding of welding gun in the workpiece annular region; Through repeating the overlap joint cladding of cladding 2-3 time, adjacent welding bead on the same area, can obtain thickness is that 4-6mm, width are the ceramic cladding layer-metal of 20-30mm;
3, ground
Workpiece to preparing cladding layer carries out ground.Through to the cladding layer grinding, make the size of cheater plate or cut ring reach designing requirement.When cladding layer thickness during in the 4-6mm scope, the residual thickness of cladding layer is 3.5-5.5mm after grinding fine finishining.
The invention has the advantages that; Directly prepare ceramic cladding layer-metal in cheater plate and cut ring working face; Cladding layer and matrix are metallurgical binding (can effectively avoid the welding-on method is existing peels off problem inadequately because of local hard alloy blocks and substrate combinating strength); This method processing step is simple, cost is lower, and cheater plate and cut ring life-span are reached about 15000 cubic metres/cover.
Description of drawings
Fig. 1 is the cheater plate board substrate, needs annular region 1, sector region 2, annular region 3, the delta-shaped region 4 of preparation ceramic cladding layer-metal.
Fig. 2 is a cladding workbench sketch map, wig-wag 5, plasma (welding) torch 6, annular region cladding layer 7, rotating circular disk 8.
The specific embodiment
Select for use No. 45 steel as the cheater plate matrix material, two annular regions, sector region and delta-shaped region (see figure 1) on the cheater plate matrix prepare ceramic cladding layer-metal, and concrete processing step is following:
1, is prepared in flux cored wire.
(1) take by weighing dusty material by following proportioning: the percentage by weight of the used dusty material of flux cored wire is: Mo powder (200 orders, purity 99.7%): 1wt.%, NbC powder (250 orders, purity 99.6%): 15wt.%, TiB
2Powder (200 orders, purity 99.6%): 8wt.%, Cr powder: (200 orders, purity 99.6%): 3wt.%; Al powder (250 orders, purity 99.8%): 0.6wt.%, WC powder (150 orders, purity 99.6%): surplus; Above-mentioned powder is placed drying box, 110 ℃ dry 3 hours down, with powder ball milling 4 hours in ball mill, obtain evenly tiny mixed-powder then.
(2) select the skin material of Ni paper tinsel (purity is 99%, and thickness is 50 μ m, and width is 40mm, length 400mm) for use as parcel (1) said mixed-powder.Utilize the method for manual powder filling that mixed-powder is wrapped in the nickel foil, forming external diameter is the circular section flux cored wire of 5mm, and mixed-powder shared percentage by weight in flux cored wire is 85%.
(3) the flux cored wire two ends flattening that will irritate powder is earlier sealed, and promptly forms cladding and uses flux cored wire.
2, select the cheater plate of shape shown in Figure 1 for use, adopt the machined way that its working face (clad can fusion) is carried out cut and handle, cutting layer thickness is 1mm.Oil removing, abatement processes are carried out in surface to after the cutting.
3, preparation cladding layer
Cladding workbench principle is seen Fig. 2, and plasma (welding) torch is fixed on the connecting rod that links to each other with wig-wag 5, and welding gun is vertical with workpiece (being the cheater plate matrix) clad can fusion, at required wear-resisting zone preparation ceramic cladding layer-metal.During concrete the construction, at first prepare ceramic cladding layer-metal 2 annular regions; Wherein, workpiece is fixed on the rotating disk 8, and rotating disk 8 drives the workpiece uniform rotation, adopts manual feeding method to prepare cladding layer in annular region; The wig-wag frequency is 2 times/second, and the plasma (welding) torch electric current is 200A; Through buncher control workpiece velocity of rotation; Making welding gun and workpiece is 4mm/s at the speed of related movement of annular region circumferencial direction; Through repeating the overlap joint cladding of cladding 2 times, adjacent welding bead on the same area, can obtain average thickness is that 5mm, width are the ceramic cladding layer-metal of 22mm.Prepare ceramic cladding layer-metal at fan-shaped and delta-shaped region then; The employing workpiece is fixed, and the method for wig-wag base moving linearly prepares cladding layer; Through Electric Machine Control, making the wig-wag frequency is that the speed of related movement of 2 times/second, workpiece and wig-wag base is 4mm/s, and the plasma (welding) torch electric current is 200A; Through repeating the overlap joint cladding of cladding 2 times, adjacent welding bead on the same area, obtain the ceramic cladding layer-metal that average thickness is 5mm at sector region, delta-shaped region respectively.
4, grinding fine finishining
Utilize surface grinding machine, the workpiece for preparing cladding layer is carried out ground, through the grinding cladding layer, make the size of workpiece reach designing requirement, the residual thickness of cladding layer is 3.5mm (promptly exceeding the height of matrix surface) after grinding fine finishining.
Claims (3)
1. a flux cored wire that is used for cheater plate and cut ring abrasionproof is characterized in that, the crust of this flux cored wire is pure Ni band; Core is filled mixed-powder; The percentage by weight of the used dusty material of flux cored wire is: Mo powder: 1-2wt.%, NbC powder: 10-25wt.%, TiB
2Powder: 5-15wt.%, Cr powder: 2-5wt.%, Al powder: 0.3-1wt.%, WC powder: surplus.
2. according to the said flux cored wire of claim 1, it is characterized in that mixed-powder shared percentage by weight in flux cored wire is 65-90wt.%.
3. method for preparing claim 1 or 2 said flux cored wires is characterized in that processing step is:
(1) batching: the percentage by weight of the used dusty material of flux cored wire is: the crust of this flux cored wire is pure Ni band, and core is filled mixed-powder, and the percentage by weight of mixed-powder composition is: Mo powder: 1-2wt.%, NbC powder: 10-25wt.%, TiB
2Powder: 5-15wt.%, Cr powder: 2-5wt.%, Al powder: 0.3-1wt.%, WC powder: surplus;
(2) set by step (1) described proportion of powder takes by weighing required various powder, is called the powder core raw material;
(3) it is dry the said powder core raw material of step (2) to be put into drying box, and the drying box temperature is 100-120 ℃, and be 3-6 hour drying time;
(4) utilize planetary ball mill mixed powder core raw material, form the uniform mixed-powder of component;
(5) mixed-powder behind the employing pure nickel band parcel ball milling forms flux cored wire, and mixed-powder shared percentage by weight in flux cored wire is 65-90wt.%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101425049A CN101837520B (en) | 2010-04-07 | 2010-04-07 | Anti-wear powder-cored wire for glass plate and cutting ring and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101425049A CN101837520B (en) | 2010-04-07 | 2010-04-07 | Anti-wear powder-cored wire for glass plate and cutting ring and preparation method thereof |
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| CN101837520A CN101837520A (en) | 2010-09-22 |
| CN101837520B true CN101837520B (en) | 2012-01-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102444575A (en) * | 2011-12-22 | 2012-05-09 | 中联重科股份有限公司 | Wear plate for pumping concrete, manufacturing method of wear plate and concrete pump equipped with wear plate |
| CN102518585B (en) * | 2011-12-22 | 2016-02-03 | 中联重科股份有限公司 | Concrete pumping glasses plate and manufacture method thereof and there is its concrete pump |
| CN102699495B (en) * | 2011-12-28 | 2015-06-24 | 佳木斯大学 | Method for preparing TiB2 metal ceramic wear-resistant coating |
| CN113319463B (en) * | 2021-06-23 | 2022-07-26 | 磐固合金(常州)有限公司 | Metal-based ceramic particle welding wire and preparation process thereof |
| CN115401351A (en) * | 2022-08-16 | 2022-11-29 | 浙江鸿昌铝业有限公司 | Welding process of aluminum alloy section |
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| JPS5768296A (en) * | 1980-10-16 | 1982-04-26 | Nissan Motor Co Ltd | Automatic welding wire for surface hardening and overlaying |
| CN101602132B (en) * | 2009-07-15 | 2011-05-11 | 华北电力大学 | Method for preparing powder-cored welding wire and cladding layer used for cladding surface of hot working die |
| CN101664862A (en) * | 2009-09-25 | 2010-03-10 | 王新虎 | Iron-based high-titanium wear-resistant surfacing flux-cored welding wire |
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