CN101596653A - A kind of cored welding strip applied in resurfacing welding and preparation method thereof - Google Patents
A kind of cored welding strip applied in resurfacing welding and preparation method thereof Download PDFInfo
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- CN101596653A CN101596653A CNA2009100163559A CN200910016355A CN101596653A CN 101596653 A CN101596653 A CN 101596653A CN A2009100163559 A CNA2009100163559 A CN A2009100163559A CN 200910016355 A CN200910016355 A CN 200910016355A CN 101596653 A CN101596653 A CN 101596653A
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Abstract
The invention discloses a kind of novel built-up welding medicine core welding, be made up of steel band steel pipe that surrounds and the medicinal powder that is wrapped in it, steel band comprises steel band and following steel band, and last steel band and following steel band are commercially available steel band.The steel pipe that steel band surrounds is shaped as: longitudinal cross-section is long flat or rectangle like, and its longitudinal length is arbitrarily determined, and can be intercepted or be wound in dish as required arbitrarily.The widthwise edge of last steel band and following steel band is connected with joint form in last steel band side, and medicinal powder evenly is filled in the above-mentioned steel pipe that is surrounded by steel band, and filling rate is 20%～80%.According to the difference of deposited metal classification, the content difference of alloying element in the built-up welding medicine core welding.The production equipment and the technology of medicine core welding of the present invention are simple, and production cost is low, have overcome the drawback that filament alloy for surfacing welding wire is difficult to produce, and have overcome that the flux-cored wire investment of production equipment is big, production cost is high, expensive problem.
Description
Technical field
The present invention relates to a kind of cored welding strip applied in resurfacing welding and preparation method thereof.
Background technology
The machine components great majority are made with metal material, owing between the part or the relative motion between part and the material, can wear and tear.Along with development of modern industry, machine components often are in unusual complicated and exacting terms work down, a large amount of mechanized equipments is often scrapped because of wearing and tearing, and this just requires to have good abrasion resistance on the mechanized equipment surface of bearing than under the conditions of work such as big load.
Built-up welding is simple because of technology, and equipment investment is few, and flexible operation adapts to wide and is widely used in the manufacturing or the reparation of wear parts.Manual electric arc pile up welding, oxy-acetylene flame built-up welding, automatic submerged-arc bead welding, Gas Shielded welding, plasma surfacing, ESW etc. are the processes of using always.Welding rod, flux-cored wire, solid core welding wire, alloy powder block, the band utmost point etc. are the resurfacing welding materials of using always.Welding rod has advantages such as use is flexible, easily manufactured, patent about welding rod is also many, as Chinese patent CN86106019B " heat-resistant and wear-resistant solder stick for pile-up welding ", CN1116574A " a kind of rich chromium cast iron resurfacing welding material and technology ", CN1003430B " welding rod for non-preheating bead welding with superior hardness and anti-abrasiveness " etc.But the welding rod alloy transfer coefficient of element is low, the composition of deposited metal is stable inadequately and evenly, built-up welding efficient is low, is not suitable for automatic surfacing, the production cost height.CN1415453A " a kind of built-up welding is with wrapping the core welding wire ", CN1775454A " high anticrack, wear-resistance, high-cr cast iron cored solder wire for huild-up welding " etc. is the patent of flux-cored welding wire for overlaying welding, the shortcoming of flux-cored wire is that manufacturing process complexity, price are more expensive, the diameter of flux-cored wire mostly is below the 4mm at present, the width of bead-on-plate weld is less, and efficient is high not as being with during large-area built-up welding; The application number of applicant is 200910014390.7 patent of invention " a kind of revolving body or wear-resistant composite board overlaying welding large-diameter flux-cored wire ", propose diameter and surpassed flux-cored wire of 4mm and preparation method thereof, though deposition rate improves greatly, the width of bead-on-plate weld is still littler than the strip surfacing.Chinese patent CN85102440B " surfacing welding alloy powder agglomates " has proposed that alloy powder is prepared into alloy block and has been used for built-up welding, has improved the transfer coefficient of alloying element.Also have the alloy welding wire built-up welding in addition, the utilization rate of alloy welding wire transition alloy elements alloying element is higher, composition is also relatively more even though utilize, and alloy welding wire is difficult to make.
Advantages such as strip surfacing has the welding quality height, face of weld is smooth, presentation quality good, efficient, low cost, during strip surfacing, for the band utmost point that width is bigger magnetic control means need be installed on welding equipment,, keep arc stability so that the arc burning end face of the band utmost point can parallelly advance.The technology of strip surfacing material with submerged-arc welding process built-up welding railway locomotive, vehicle cartridge of using disclosed as Chinese patent CN1125700C " method of a kind of repair welding railway locomotive, vehicle cartridge ", this patent only relates to overlaying method, does not relate to composition and preparation method as the band utmost point material of electrode.The band stainless steel belt that very 90mm is wide, 0.5mm is thick of paper " the double-deck electroslag surfacing process experimental study of the 90mm broadband utmost point stainless steel " use that 2006 the 5th phases of pressure vessel magazine deliver.The band of paper " caster roll the is used the strip surfacing process practice " use that metallurgical 2002 the 4th phases of magazine of Jiangsu deliver is Cr13NiMo very, and thickness is 0.5mm, and width is 30mm and 50mm or the like.The used band of strip surfacing extremely all is formed from strip steel at present, owing to the band steel hardness that alloying element content is more is higher, make relatively difficulty, even can't make at all, make hardfacing with being with the of less types of the utmost point, greatly limited the application of strip surfacing, particularly the application aspect hardfacing.
Present patent application person's publication number is CN101306493A's " a kind of flux-cored steel belt for build-up welding and preparation method thereof " patent, publication number is CN101310913A's " a kind of built-up welding with include medicine cored steel belt of steel wire and preparation method thereof " patent, having invented a kind of width is 8mm～65mm, thickness is the medicine cored steel belt of 2mm～5mm, be divided into sandwich and sandwich two classes not, make the width of bead-on-plate weld, built-up welding efficient improves greatly, but the welding of big width is when transportation and use, medicinal powder moves easily, the difference of medicinal powder component proportion also easily causes the inhomogeneities of medicinal powder composition, finally makes welding technological properties and deposited metal unstable properties; The welding rigidity of big width is relatively poor, influences the band that send when welding; In order to improve welding technological properties, welding has adopted " sandwich " design, but the manufacturing process more complicated of sandwich welding.
Harsh day by day along with the component of machine applying working condition, as wearing and tearing, burn into high temperature etc., to low-cost, easy to use, production efficiency is high, the demand of the resurfacing welding material of excellent performance is also more urgent.
Summary of the invention
At existing resurfacing welding material, particularly built-up welding is few with manufacturing difficulty, the kind that welding exists, range of application is limited, and medicine core band utmost point medicinal powder moves easily, poor rigidity, welding technological properties remain problems such as improvement, the present invention proposes a kind of novel built-up welding medicine core welding and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of novel built-up welding medicine core welding, form by steel band steel pipe that surrounds and the medicinal powder that is wrapped in it, it is characterized in that: described steel band comprises steel band and following steel band, last steel band and following steel band are the commercially available steel band of thickness 0.1mm～0.8mm, width 10mm～180mm, and the material of steel band is mild steel or stainless steel.The steel pipe that steel band surrounds is shaped as: longitudinal cross-section is long flat or rectangle like, is of a size of: width 8mm～150mm, thickness 2mm～5mm, its longitudinal length arbitrarily determine, and can intercept or be wound in dish as required arbitrarily.The widthwise edge of last steel band and following steel band is connected with joint form in last steel band side, and the width of overlapping part is 1mm～5mm.Described medicinal powder evenly is filled in the above-mentioned steel pipe that is surrounded by steel band, and filling rate is 20%～80% (filling rate is the ratio of medicinal powder quality and medicine core welding quality).
According to the difference of deposited metal classification, the content following (by percentage to the quality) of (comprising steel band and medicinal powder) alloying element in the built-up welding medicine core welding:
1) common low medium alloy steel deposited metal: C is no more than 1.4%, Mn is no more than 6.8%, Si is no more than 1.5%, Cr is no more than 5.0%, Mo is no more than 5.0%, S less than 0.05%, P is less than 0.05%, surplus is Fe.
Or 2) Cr-W or Cr-Mo oxida-tion-resistant steel deposited metal: C are no more than 0.8%, Mn is no more than 3.5%, Si is no more than 1.2%, Cr is no more than 6.5%, Mo is no more than 4.0%, V is no more than 1.5%, W is no more than 12.0%, and surplus is Fe.
Or 3) high chrome deposited metal: C is no more than 0.40%, Mn is no more than 2.8%, Si is no more than 1.5%, Cr is 8.0%～18.0%, Ni is no more than 7.0%, Mo is no more than 3.5%, W is no more than 3.2%, Nb is no more than 0.9%, B is no more than 2.0%, and surplus is Fe.
Or 4) potassium steel or Chromador deposited metal: C are no more than 1.5%, Mn is no more than 18.0%, Cr is no more than 17.0%, Mo is no more than 2.8%, W is no more than 4.5%, Si is no more than 1.5%, and surplus is Fe.
Or 5) high-speed steel deposited metal: C is 0.6%～1.5%, Cr is 3.0%～5.6%, V is 0.8%～1.8%, W is 16.0%～21.0%, and surplus is Fe.
Or 6) alloy cast iron deposited metal: C is no more than 6.0%, Mn is no more than 3.5%, Si is no more than 3.2%, Cr is 5.0%～35.0%, Ni is no more than 8.0%, Mo is no more than 6.5%, W is no more than 21.0%, V is no more than 12.6%, B is no more than 4.0%, and surplus is Fe.
Or 7) austenite chrome-nickel steel deposited metal: C is no more than 0.2%, Mn is 0.5%～3.0%, Si is 0.2%～3.2%, Cr is 14.0%～22.0%, Ni is 6.0%～13.5%, Mo is no more than 5.5%, W is no more than 1.4%, V is no more than 1.4%, Ti is no more than 1.0%, Nb is no more than 1.4%, and surplus is Fe.
Above-mentioned 1) seven kinds of～7) listed deposited metals allow to contain a certain amount of other alloying elements that exist as impurity except the alloying element of above requirement, its content is principle with the performance that does not influence deposited metal.
In the described built-up welding medicine core welding, except adding alloying element, slag making, gas making, stabilising arc, the metal that improves the appearance of weld effect, ore or chemical products can also have been added in the medicinal powder, its addition to be to account for the percentage of built-up welding medicine core welding quality, be 0～8% aluminium powder or/and 0～2% soda ash or/and 0～2% potash or/and 0～2% potassium titanate or/and 0～8% rutile or/and 0～5% fluorite.
The described steel band of going up can be processed medicinal powder as required and cuts apart muscle, also can not process medicinal powder and cut apart muscle, and medicinal powder is cut apart muscle and can be adopted horizontal medicinal powder to cut apart that muscle, vertical medicinal powder are cut apart muscle, any direction medicinal powder is cut apart a kind of or several combination in the muscle; Following steel band keeps the plane, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5.
Described overlapping part one of can be in the following ways connects: directly freely overlap, bonding, laser weld.
Described steel band (comprise steel band and following steel band) is preferentially selected the SPCC steel band for use, and its chemical composition is: C is not more than 0.1%, Si is not more than 0.03%, Mn is 0.3%～0.55%, Cr is not more than 0.1%, Ni is not more than 0.25%, S is not more than 0.03%, P is not more than 0.03%, the surplus Fe of being.
The preparation method of described cored welding strip applied in resurfacing welding, step is as follows:
(1) selecting thickness for use is the commercially available band steel of 0.1mm～0.8mm, utilizes conventional steel band slitting equipment, and slitting goes out last steel band and the following steel band that width is 10mm～180mm, and the material of steel band is mild steel or stainless steel.
(2) according to the chemical composition requirement of all kinds of deposited metals, as: common low medium alloy steel deposited metal, Cr-W or Cr-Mo oxida-tion-resistant steel deposited metal, high chrome deposited metal, potassium steel or Chromador deposited metal, the high-speed steel deposited metal, the alloy cast iron deposited metal, austenite chrome-nickel steel deposited metal, with pulverous metal, alloy, ore or/and chemical products the are raw material powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 8～50 minutes, obtain the medicinal powder of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band length direction (vertically) with its be rolled into cross section be "
" the shape groove, then to "
" add the medicinal powder that step (2) is equipped with during shape is poor, filling rate is 20%～80%, medicinal powder "
" consistency of thickness on the poor lower surface of shape, change filling rate by the thickness that changes medicinal powder.
(4) fill medicinal powder after, will go up steel band be routed to "
" on shape is poor.
(5) incite somebody to action "
" riser of the poor left and right sides of shape curves inwardly and last steel band heals up, and forms the overlap joint interface, obtains medicine core welding blank by the roll shaping subsequently; Described overlap joint interface adopts one of following three kinds of modes to connect: directly freely overlap, bonding, laser weld.
(6) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (5) suddenly obtain, its profile is carried out finishing, and obtaining longitudinal cross-section is long flat or rectangle like, and thickness is 2mm～5mm, width is the medicine core welding of 8～150mm, as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5.
(7) the medicine core welding with step (5) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
In the described step (5), when adopting bonding way to connect the interface of steel band and last steel band down, surperficial thereon left and right sides width is the edge of 5mm during steel band on laying, or "
" inboard of the poor both sides of shape vertical component coats bonding agent, bonding agent adopts organic adhesive or inorganic adhesive.
Also can may further comprise the steps between described step (4) and (5): adopt molding roller, roll out medicinal powder and cut apart muscle on last steel band, medicinal powder is cut apart muscle and is adopted that horizontal medicinal powder is cut apart muscle, vertically medicinal powder is cut apart muscle, any direction medicinal powder and cut apart a kind of in the muscle or appoint several combinations; Laterally medicinal powder is cut apart the width five equilibrium of muscle with medicine core welding; The distance that vertical medicinal powder is cut apart between the muscle is 5mm～50mm, and evenly distributes.
Steel band is preferentially selected SPCC mild steel steel band for use in the described step (1).
The present invention utilizes the medicinal powder transition alloy elements in the medicine core welding to improve the anti-wear performance of surfacing layer metal, utilize alloy powder, breeze, chemical products powder in the medicinal powder improve electric arc stability, improve processing performance and appearance of weld.
Medicine core welding of the present invention can be used for built-up welding modes such as submerged arc strip surfacing, open arc strip surfacing, the strip surfacing of gas shield electric arc, electroslag strip surfacing.
The application and the enforcement of medicine core welding of the present invention have following beneficial effect:
(1) composition of deposited metal can increase the kind and the range of application of medicine core welding by changing the composition adjustment of medicine core welding medicinal powder and steel band.
(2) compare with resurfacing welding materials such as flux-cored wire, welding rods, the strip surfacing weld width is big, moulding is attractive in appearance, composition of weld line is stable, fusion penetration is shallow, dilution rate is low, built-up welding efficient is higher, can realize automatic surfacing.
(3) production equipment and the technology of medicine core welding of the present invention are simple, and production cost is low, have overcome the drawback that filament alloy for surfacing welding wire is difficult to produce, and have overcome that the flux-cored wire investment of production equipment is big, production cost is high, expensive problem.
(4) medicine core welding of the present invention has adopted medicinal powder to cut apart the muscle design, has avoided the medicinal powder of welding in transportation and use to move, and makes welding technological properties and deposited metal stable performance; The design that medicine core welding medicinal powder is cut apart muscle has improved welding rigidity, and sending when making welding is with smooth and easy; Improved welding technological properties.
(5) medicine core welding of the present invention can be a random length, and can be wound in dish, is suitable for continuous automatic surfacing, can be used for submerged arc strip surfacing, open arc strip surfacing, the strip surfacing of gas shield electric arc, electroslag strip surfacing etc., and the overlaying method that is suitable for is many.
Description of drawings
Fig. 1 has the medicine core welding cross section that horizontal medicinal powder is cut apart muscle;
Fig. 2 has the medicine core welding upper surface that horizontal medicinal powder is cut apart muscle;
Fig. 3 be have horizontal medicinal powder cut apart muscle and vertically medicinal powder cut apart the medicine core welding upper surface of muscle;
Fig. 4 has the medicine core welding longitudinal section that vertical medicinal powder is cut apart muscle;
Fig. 5 is the medicine core welding upper surface that medicinal powder with arbitrary orientation is cut apart muscle.
Wherein, 1, steel band down; 2, go up steel band; 3, laterally medicinal powder is cut apart muscle; 4, medicinal powder; 5, vertically medicinal powder is cut apart muscle; 6, the medicinal powder of arbitrary orientation is cut apart muscle.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples:
Embodiment 1: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.4mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 78mm are that 72mm goes up steel band 2.
(2) deposited metal is a low-alloy steel, and the content of alloying element is by percentage to the quality in the welding, 0.4%C, 0.8%Mn, 0.5%Si, 3.2%Cr, 0.035%S, 0.03%P, surplus be Fe.The metal of choice of powder shape, the alloy powder that makes up a prescription adds the aluminium powder of welding quality 1% in the medicinal powder, and adopts conventional mixed powder equipment to mix powder 20 minutes, obtains the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 60mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 55%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) adopt molding roller, on last steel band 2, roll out 2 horizontal medicinal powder and cut apart muscle, cut apart width 3 five equilibriums of muscle medicine core welding.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and forms overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, and the acquisition longitudinal cross-section is that long flat, thickness are that 3.5mm, width are the medicine core welding of 60mm, sees Fig. 1, Fig. 2.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine core welding that makes more than the use, adopt submerged welding process to carry out built-up welding, welding current is 650A～700A, voltage is 35V～42V, built-up welding speed is 50cm/min, and solder flux is 431, and the test plate (panel) material is Q345, be of a size of 300mm * 100mm * 20mm, single track single-layer surfacing, overlay cladding thickness are 4mm.。The room temperature hardness of deposited metal is 42HRC.Can be used for ordinary carbon steel surface overlaying antifriction metal (AFM) layer.
Embodiment 2: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.5mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 56mm are that 46mm goes up steel band 2.
(2) deposited metal is an alloy cast iron, and the content of alloying element is by percentage to the quality in the welding, 5.8%C, 0.9%Mn, 0.6%Si, 26.5%Cr, 2.1%Mo, 1.2%B, 3.1%V, 0.035%S, 0.03%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 20 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 40mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 58%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) adopt molding roller, go out a horizontal medicinal powder in the intermediate rolling of last steel band 2 and cut apart muscle, cut apart width 2 five equilibriums of muscle medicine core welding.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and forms overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, and the acquisition longitudinal cross-section is that long flat, thickness are that 3.0mm, width are the medicine core welding of 40mm, sees Fig. 1, Fig. 2.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine core welding that makes more than the use adopts the submerged welding process built-up welding, and welding current is 550A～600A, voltage is 30V～38V, and built-up welding speed is 60cm/min, and solder flux is 260, the test plate (panel) material is Q345, is of a size of 300mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.The room temperature hardness of deposited metal is 58HRC.Deposited metal belongs to rich chromium cast iron class antifriction alloy, and it is mutually wear-resistant with boride to be distributed with carbide on matrix, is applicable to the abrasive wear of low shock loading operating mode.Make Wear-Resistant Compound Steel Plate with above-mentioned medicine core welding submerged arc overlay welding on the Q345 substrate, wearing layer thickness is 4mm, substrate thickness is 20mm, Wear-Resistant Compound Steel Plate is processed into wear-resistant block is installed in the loader hopper bottom, be used for river sand exploitation, under the operating mode of the wet strong abrasive wear of river sand, wear resistence improves greatly, and the life-span was brought up to more than half a year by adopting in 2 months of the 25CrMnMo steel-casting.
Embodiment 3: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.4mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 105mm are that 140mm goes up steel band 2.
(2) deposited metal is a high chrome, and the content of alloying element is by percentage to the quality in the welding, 0.10%C, 0.8%Mn, 0.7%Si, 15.2%Cr, 0.5%Mo, 1.8%Ni, 1.2%W, 0.025%S, 0.03%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 25 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 90mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 80%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
On laying during steel band 2 thereon the wide zone of 5mm, edge, the left and right sides on surface coat bonding agent, adopt organic adhesive epoxy resin.
(5) adopt molding roller, on last steel band 2, roll out horizontal medicinal powder cut apart muscle and vertically medicinal powder cut apart muscle, horizontal medicinal powder is cut apart width 6 five equilibriums of muscle with medicine core welding, the distance of vertically cutting apart between the muscle is 15mm.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and couple together with bonding agent, form overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, and the acquisition longitudinal cross-section is that long flat, thickness are that 5.0mm, width are the medicine core welding of 90mm, sees Fig. 1, Fig. 3 and Fig. 4.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine core welding that makes more than the use adopts the built-up welding of open arc welding technology, and welding current is selected 650A～720A for use, and the test plate (panel) material is Q345, is of a size of 200mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.The room temperature hardness of deposited metal is 45HRC.Deposited metal belongs to the martensite high chrome, has good friction resistant wearing and tearing and decay resistance.
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.4mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 78mm are that 72mm goes up steel band 2.
(2) deposited metal is a high-speed steel, and the content of alloying element is by percentage to the quality in the welding, 0.9%C, 4.2%Cr, 18.5%W, 1.2%V, 0.035%S, 0.03%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 20 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 60mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 57%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) adopt molding roller, roll out 2 vertical medicinal powder and cut apart muscle on last steel band 2, the distance that vertical medicinal powder is cut apart between the muscle is 20mm.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and use laser weld, form overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, obtains longitudinal cross-section and be long flat or rectangle like, thickness is that 3.5mm, width are the medicine core welding of 60mm.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine core welding that makes more than the use adopts the built-up welding of open arc welding technology, and welding current is selected 480A～550A for use, and the test plate (panel) material is Q345, is of a size of 200mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.The room temperature hardness of deposited metal is 55HRC.
Embodiment 5: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.2mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 18mm are that 8mm goes up steel band 2.
(2) deposited metal is a potassium steel, and the content of alloying element is by percentage to the quality in the welding, 0.9%C, 15%Mn, 0.5%Cr, 0.4%Mo, 1.2%W, 0.03%S, 0.023%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 22 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 8mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 50%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) width of medicine core welding is less, and steel band 2 need not roll out medicinal powder and cut apart muscle.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and forms overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, obtains longitudinal cross-section and be long flat or rectangle like, thickness is that 2mm, width are the medicine core welding of 8mm.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine cored steel belt that makes more than the use adopts the submerged welding process built-up welding, and welding current is 450A～500A, voltage is 30V～38V, and built-up welding speed is 50cm/min, and solder flux is 431, the test plate (panel) material is Q345, is of a size of 300mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.The room temperature hardness of deposited metal is 180HB.
Embodiment 6: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SUS304 stainless steel of 0.4mm (0Cr18Ni9) band steel, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 78mm are that 72mm goes up steel band 2.
(2) deposited metal is an austenite chrome-nickel steel, and the content of alloying element is by percentage to the quality in the welding, 0.12%C, 0.8%Mn, 0.5%Si, 18.2%Cr, 10.0%Ni, 0.5%Ti, 0.6%Mo, 0.025%S, 0.03%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 26 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 60mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 58%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) adopt molding roller, on last steel band 2, roll out 2 horizontal medicinal powder and cut apart muscle, cut apart width 3 five equilibriums of muscle medicine core welding.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and forms overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, obtains longitudinal cross-section and be long flat or rectangle like, thickness is that 3.5mm, width are the medicine core welding of 60mm, sees Fig. 1, Fig. 2.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine cored steel belt that makes more than the use adopts the submerged welding process built-up welding, and welding current is 680A～750A, voltage is 38V～45V, and built-up welding speed is 50cm/min, and solder flux is 260, the test plate (panel) material is Q345, is of a size of 300mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.Deposited metal has excellent corrosion resisting performance.
Embodiment 7: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.4mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 78mm are that 72mm goes up steel band 2.
(2) deposited metal is an oxida-tion-resistant steel, and the content of alloying element is by percentage to the quality in the welding, 0.08%C, 0.78%Mn, 0.2%Si, 1.4%Cr, 0.9%Mo, 0.3%V, 0.2%W, 0.02%S, 0.025%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription, and adopt conventional mixed powder equipment to mix powder 20 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 60mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 54%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) adopt molding roller, on last steel band 2, roll out 2 horizontal medicinal powder and cut apart muscle, cut apart width 3 five equilibriums of muscle medicine core welding.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and forms overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, obtains longitudinal cross-section and be long flat or rectangle like, thickness is that 3.5mm, width are the medicine core welding of 60mm, sees Fig. 1, Fig. 2.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine cored steel belt that makes more than the use adopts the submerged welding process built-up welding, and welding current is 680A～750A, voltage is 38V～45V, and built-up welding speed is 50cm/min, and solder flux is 350, the test plate (panel) material is Q345, is of a size of 300mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.Deposited metal has good heat-resistant.
Embodiment 8: the preparation cored welding strip applied in resurfacing welding
(1) selecting thickness for use is the commercially available SPCC low carbon steel strip of 0.5mm, utilizes conventional steel band slitting equipment, and following steel band 1 and width that slitting goes out width 56mm are that 46mm goes up steel band 2.
(2) deposited metal is an alloy cast iron, and the content of alloying element is by percentage to the quality in the welding, 5.5%C, 1.1%Mn, 0.9%Si, 25.0%Cr, 2.0%Mo, 1.2%B, 3.5%V, 2.2%W, 0.035%S, 0.03%P, surplus be Fe.Metal, the alloy of the medicinal powder choice of powder shape powder that makes up a prescription adds in the medicinal powder and accounts for medicine core welding quality 0.5% soda ash, 0.5% potash, 0.2% potassium titanate, 3% rutile, 1% fluorite.Adopt conventional mixed powder equipment to mix powder 20 minutes, obtain the medicinal powder 4 of medicine core welding.
(3) utilize existing rolling technique and special equipment, along following steel band 1 length direction (vertically) with its be rolled into cross-sectional width be 40mm "
" the shape groove, then to "
" add the medicinal powder 4 that step (2) is equipped with during shape is poor, filling rate is 58%, medicinal powder "
" consistency of thickness on the poor lower surface of shape.
(4) "
" fill medicinal powder during shape is poor after, will go up steel band 2 be routed to "
" on shape is poor.
(5) adopt molding roller, go out a horizontal medicinal powder in the intermediate rolling of last steel band 2 and cut apart muscle, cut apart width 2 five equilibriums of muscle medicine core welding.
(6) behind the completing steps (5), will "
" riser of the poor left and right sides of shape curves inwardly and last steel band 2 heals up, and forms overlap joint interface shown in Figure 1.Obtain medicine core welding blank by the roll shaping subsequently.
(7) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (6) suddenly obtain carries out finishing to its profile, and the acquisition longitudinal cross-section is that long flat, thickness are that 3.0mm, width are the medicine core welding of 40mm, sees Fig. 1, Fig. 2.
(8) the medicine core welding with step (7) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
The medicine core welding that makes more than the use adopts the submerged welding process built-up welding, and welding current is 550A～600A, voltage is 30V～38V, and built-up welding speed is 60cm/min, and solder flux is 260, the test plate (panel) material is Q345, is of a size of 300mm * 100mm * 20mm that single track single-layer surfacing, overlay cladding thickness are 4mm.The room temperature hardness of deposited metal is 56HRC.Deposited metal belongs to rich chromium cast iron class antifriction alloy, and it is mutually wear-resistant with boride to be distributed with carbide on matrix, is applicable to the abrasive wear of low shock loading operating mode.Make Wear-Resistant Compound Steel Plate with above-mentioned medicine core welding submerged arc overlay welding on the Q345 substrate, wearing layer thickness is 4mm, substrate thickness is 20mm, Wear-Resistant Compound Steel Plate is processed into wear-resistant block is installed in the loader hopper bottom, be used for river sand exploitation, under the operating mode of the wet strong abrasive wear of river sand, wear resistence improves greatly, and the life-span was brought up to more than half a year by adopting in 2 months of the 25CrMnMo steel-casting.
Claims (10)
1. cored welding strip applied in resurfacing welding, comprise the steel pipe that steel band surrounds and be wrapped in its interior medicinal powder, it is characterized in that: described steel band comprises steel band and following steel band, last steel band and following steel band are the commercially available steel band of thickness 0.1mm～0.8mm, width 10mm～180mm, and the material of steel band is the low-carbon (LC) steel or stainless steel; The steel pipe that steel band surrounds is shaped as: longitudinal cross-section is long flat or rectangle like, is of a size of: width 8mm～150mm, thickness 2mm～5mm, its longitudinal length arbitrarily determine, and can intercept or be wound in dish as required arbitrarily; The widthwise edge of last steel band and following steel band is connected with joint form in last steel band side, and the width of overlapping part is 1mm～5mm;
Described medicinal powder evenly is filled in the above-mentioned steel pipe that is surrounded by steel band, and filling rate is 20%～80%.
2. a kind of cored welding strip applied in resurfacing welding according to claim 1 is characterized in that: in the described medicine core welding each element content as follows, by percentage to the quality:
1) common low medium alloy steel deposited metal: C is no more than 1.4%, Mn is no more than 6.8%, Si is no more than 1.5%, Cr is no more than 5.0%, Mo is no more than 5.0%, S less than 0.05%, P is less than 0.05%, surplus is Fe;
Or 2) Cr-W or Cr-Mo oxida-tion-resistant steel deposited metal: C are no more than 0.8%, Mn is no more than 3.5%, Si is no more than 1.2%, Cr is no more than 6.5%, Mo is no more than 4.0%, V is no more than 1.5%, W is no more than 12.0%, and surplus is Fe;
Or 3) high chrome deposited metal: C is no more than 0.40%, Mn is no more than 2.8%, Si is no more than 1.5%, Cr is 8.0%～18.0%, Ni is no more than 7.0%, Mo is no more than 3.5%, W is no more than 3.2%, Nb is no more than 0.9%, B is no more than 2.0%, and surplus is Fe;
Or 4) potassium steel or Chromador deposited metal: C are no more than 1.5%, Mn is no more than 18.0%, Cr is no more than 17.0%, Mo is no more than 2.8%, W is no more than 4.5%, Si is no more than 1.5%, and surplus is Fe;
Or 5) high-speed steel deposited metal: C is 0.6%～1.5%, Cr is 3.0%～5.6%, V is 0.8%～1.8%, W is 16.0%～21.0%, and surplus is Fe;
Or 6) alloy cast iron deposited metal: C is no more than 6.0%, Mn is no more than 3.5%, Si is no more than 3.2%, Cr is 5.0%～35.0%, Ni is no more than 8.0%, Mo is no more than 6.5%, W is no more than 21.0%, V is no more than 12.6%, B is no more than 4.0%, and surplus is Fe;
Or 7) austenite chrome-nickel steel deposited metal: C is no more than 0.2%, Mn is 0.5%～3.0%, Si is 0.2%～3.2%, Cr is 14.0%～22.0%, Ni is 6.0%～13.5%, Mo is no more than 5.5%, W is no more than 1.4%, V is no more than 1.4%, Ti is no more than 1.0%, Nb is no more than 1.4%, and surplus is Fe.
3. a kind of cored welding strip applied in resurfacing welding according to claim 1, it is characterized in that: described go up is processed with medicinal powder on the steel band and cuts apart muscle, and medicinal powder is cut apart muscle and adopted that horizontal medicinal powder is cut apart muscle, vertically medicinal powder is cut apart muscle, any direction medicinal powder and cut apart a kind of in the muscle or appoint several combinations; Following steel band keeps the plane.
4. a kind of cored welding strip applied in resurfacing welding according to claim 1 is characterized in that: described overlapping part connects one of in the following ways: directly freely overlap, bonding, laser weld.
5. a kind of cored welding strip applied in resurfacing welding according to claim 1, it is characterized in that: described steel band is selected the SPCC steel band for use, and its chemical composition is: C is not more than 0.1%, Si is not more than 0.03%, Mn is 0.3%～0.55%, Cr is not more than 0.1%, Ni is not more than 0.25%, S is not more than 0.03%, P is not more than 0.03%, surplusly be Fe.
6. a kind of cored welding strip applied in resurfacing welding according to claim 1, it is characterized in that: also comprise following component in its medicinal powder, its addition to be accounting for the percentage of built-up welding medicine core welding quality, for: 0～8% aluminium powder or/and 0～2% soda ash or/and 0～2% potash or/and 0～2% potassium titanate or/and 0～8% rutile or/and 0～5% fluorite.
7. the preparation method of the described a kind of cored welding strip applied in resurfacing welding of claim 1 is characterized in that, step is as follows:
(1) selecting thickness for use is the commercially available steel band of 0.1mm～0.8mm, utilizes conventional steel band slitting equipment, and slitting goes out last steel band and the following steel band that width is 10mm～180mm, and the material of steel band is mild steel or stainless steel;
(2) chemical composition according to all kinds of deposited metals requires preparation medicinal powder, and adopts conventional mixed powder equipment to mix powder 8～50 minutes, obtains the medicinal powder of medicine core welding;
(3) utilize existing rolling technique and special equipment, the following steel band length direction in edge is rolled into cross section with it and is
The shape groove, then to
Add the medicinal powder that step (2) is equipped with during shape is poor, filling rate is 20%～80%;
(4) behind the filling medicinal powder, will go up steel band and be routed to
On shape is poor;
(5) will
The riser of the poor left and right sides of shape curves inwardly and last steel band heals up, and forms the overlap joint interface, obtains medicine core welding blank by the roll shaping subsequently; Described overlap joint interface adopts one of following three kinds of modes to connect: directly freely overlap, bonding, laser weld;
(6) adopt conventional cold-draw equipment and mold cold to take a step medicine core welding blank that (5) suddenly obtain carries out finishing to its profile, and the acquisition longitudinal cross-section is long flat or rectangle like, and thickness is 2mm～5mm, and width is the medicine core welding of 8mm～150mm;
(7) the medicine core welding with step (6) finishing intercepts or is wound in dish arbitrarily, promptly gets the medicine core welding finished product that is used for strip surfacing.
8. the preparation method of a kind of cored welding strip applied in resurfacing welding according to claim 7, it is characterized in that: in the described step (5), when adopting bonding way to connect the interface of steel band and last steel band down, surperficial thereon left and right sides width is the edge of 5mm during steel band on laying, or
Bonding agent is coated in the inboard of the poor both sides of shape vertical component, and bonding agent adopts organic adhesive or inorganic adhesive.
9. the preparation method of a kind of cored welding strip applied in resurfacing welding according to claim 7, it is characterized in that, also can may further comprise the steps between described step (4) and (5): adopt molding roller, roll out medicinal powder and cut apart muscle on last steel band, medicinal powder is cut apart muscle and is adopted that horizontal medicinal powder is cut apart muscle, vertically medicinal powder is cut apart muscle, any direction medicinal powder and cut apart a kind of in the muscle or appoint several combinations; Laterally medicinal powder is cut apart the width five equilibrium of muscle with medicine core welding; The distance that vertical medicinal powder is cut apart between the muscle is 5mm～50mm, and evenly distributes.
10. the preparation method of a kind of cored welding strip applied in resurfacing welding according to claim 7 is characterized in that: steel band is selected SPCC mild steel steel band for use in the described step (1).
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