CN104148633A - Sliding bearing plate sintering method and supporting frame used in method - Google Patents
Sliding bearing plate sintering method and supporting frame used in method Download PDFInfo
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- CN104148633A CN104148633A CN201410414636.0A CN201410414636A CN104148633A CN 104148633 A CN104148633 A CN 104148633A CN 201410414636 A CN201410414636 A CN 201410414636A CN 104148633 A CN104148633 A CN 104148633A
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Abstract
The invention discloses a sliding bearing plate sintering method and a supporting frame used in the method. The supporting frame comprises discharging layers A and discharging layers B. Each discharging layer A comprises a supporting rod and a connecting rod, wherein fixing parts are arranged at the two ends of the supporting rod and are regularly stereoscopic; each discharging layer B comprises a supporting rod and a connecting rod, wherein the supporting rod is connected with the connecting rod, and fixing parts are arranged at the two ends of the supporting rod and are regularly stereoscopic; the fixing parts of the discharging layers B can be clamped into the fixing parts of the discharging layers A, the discharging layers A and the discharging layers B are overlapped, and the total layer number of the discharging layers is 2-12. According to the sliding bearing plates sintered through the supporting frame, the performance of plates and the performance of parts of each plate are consistent, and the problems that the plate in the prior art is low in sintering efficiency and unstable in sintering quality are successfully resolved.
Description
Technical field
The present invention relates to a kind of metal sintering method, be specifically related to a kind of sliding bearing sheet material sintering method and for the support of the method.
Background technology
Sliding bearing sheet material is for the production and processing of sliding bearing, and it is basis that the sintering of take has the metallic plate of copper alloy powder.It is high that sliding bearing sheet material has bearing capacity, shock-resistant, high temperature resistant, the features such as self-lubricating ability is strong, corrosion-resistant, the product that adopts sliding bearing sheet material to make, is specially adapted to heavy duty, low speed, reciprocal or swing etc. is difficult to occasion lubricated and formation oil film, is mainly used in and makes boundary lubrication bearing, Nonlubricated bearing, bimetallic bearing three series products.Product has been widely used in the fields such as engineering machinery, automobile, plastic rubber shaping machinery, Hydraulic Elements, logistics harbour machinery, punch press metal forming machinery, farm machinery, office equipment, food machinery, energy facilities at present.
The sintering process that copper alloy powder is sintered on metallic plate plays an important role to the performance of sliding bearing sheet material; The sintering of sliding bearing sheet material carries out in meshbeltfurnace, meshbeltfurnace sintering is a kind of along with mesh-belt operation pipelining, mainly refer to that copper alloy powder heats under suitable atmosphere, condition lower than main component fusing point, by means of atomic migration, realize between particle and connecting, copper alloy powder is sintered to the process on copper facing metallic plate or copper alloy plate.Copper alloy powder is for take the alloy powder that copper, tin, lead, zinc is main component, and along with the requirement of environmental protection, it is unleaded that copper alloy powder is tending towards.
In the sintering process of copper alloy powder and copper facing metallic plate, sintering atmosphere can be hydrogen, hydrogen/nitrogen mist or decomposed ammonia body.Adopt decomposed ammonia body as sintering atmosphere; not only can reducing metal plate and copper alloy powder on oxide; take away in time the catabolite in sintered body; form protective atmosphere gas; can also reduce the impact of environment on goods; maintain the activation phenomenon in agglomerated material, make the serviceability of sintered alloy product more stable, thereby guarantee sintering finished quality.The most important thing is to realize the control to sintering atmosphere.
Because the environmental requirement of sliding bearing sheet material sintering is higher, prior art is generally individual layer sintering, the production quantity of this method in the unit interval is lower, do not reach treating capacity higher in the short time, in order to raise the efficiency, having manufacturer to find out at copper facing sheet metal adopts galvanized steel plain sheet to do separation layer between layers, realize the method for multi-layer sintering, but because sliding bearing sheet material and galvanized steel plain sheet in sintering process are combined closely, cannot guarantee the uniformity of heat distribution between layers and sintering atmosphere, thereby reduced the performance of sintered products, substantially cannot apply.
So be badly in need of a kind of device of invention, for the sintering of multilayer plain bearing sheet material, to solve existing sliding bearing sheet material sintering inefficiency, the unsettled difficult problem of sintering quality.
Summary of the invention
The object of the invention is to provide a kind of sliding bearing sheet material sintering support, it is reasonable in design, Stability Analysis of Structures, be easy to manufacture, easy to operate, this support had both guaranteed heat distribution and sintering atmosphere uniformity between sheet material in sheet material sintering process process, guaranteed product quality, improve again production efficiency, reduced cost.
For achieving the above object, the technical scheme that the present invention takes is a kind of sliding bearing sheet material sintering support, comprises A blowing layer and B blowing layer; Described A blowing layer comprises support bar and connecting rod; Described support bar is connected by connecting rod; The two ends of described support bar are equipped with fixture; Described fixture is regular three-dimensional shape, and described fixture is provided with opening up concave surface or opening down concave surface, or is provided with opening up concave surface and opening down concave surface simultaneously;
Described B blowing layer comprises support bar and connecting rod; Described support bar is connected by connecting rod; The two ends of described support bar are equipped with fixture; Described fixture is regular three-dimensional shape;
The fixture of described B blowing layer can snap in the concave surface of described A blowing layer fixture; Described A blowing layer and B blowing layer are alternately stacking; Total number of plies of described blowing layer is 2～12 layers.
In technique scheme, in blowing layer, fixture can select welding with being connected of support bar, be threaded, also fixture can be enclosed within to the two ends of support bar, the present invention is preferably fixture is enclosed within on support bar, not only stable but also conveniently assemble and disassemble, and handling ease;
The end points of support bar can be in fixture, all connecting rods are all between the fixture at support bar two ends, also can be outside fixture, the end points of the preferred support bar of the present invention and have distance between its nearest fixture, and be provided with connecting rod, be conducive to like this carrying, also increased support stability; General, a connecting rod is set between support bar termination and fixture;
The cross-sectional area of support bar is 5～100mm
2, for unification attractive in appearance, handling ease, all support bars are generally same cross-sectional area.The cross section of described support bar is perpendicular to the central shaft of support bar.Support bar in described each blowing layer is generally parallel to each other.
In sliding bearing sheet material sintering support disclosed by the invention, in blowing layer, the quantity of support bar according to the size of processed sheet material and support and definite, is generally more than two or two; The quantity of described connecting rod according to the size of processed sheet material and support and definite, is generally more than two or two.In the preferred described A blowing layer of the present invention, support bar quantity is 2 or 3; In described B blowing layer, support bar quantity is 2 or 3.For stablizing of support and making full use of of resource, the quantity of the support bar of general A blowing layer, B blowing layer is consistent.
When in support, top layer blowing layer is A blowing layer, its fixture can only have downward opening concave surface, and when in support, bottom blowing layer is A blowing layer, its fixture can only have opening up concave surface.
In preferred technical scheme, in described A blowing layer, the two ends that have a connecting rod at least respectively individual pen are wrapped on its support bar contacting, and form and are wound around knot, and this is wound around knot and contacts with the support bar of B blowing layer;
In described B blowing layer, the two ends that have a connecting rod at least respectively individual pen are wrapped on its support bar contacting, and form and are wound around knot, and this is wound around knot and contacts with the support bar of A blowing layer.So, adjacent blowing interlayer has more contact point, makes stacking of A, B blowing layer more firm.
Further in preferred technical scheme, in described A blowing layer, the two ends of all connecting rods respectively individual pen are wrapped on the support bar that this connecting rod contacts; In described B blowing layer, the two ends of all connecting rods respectively individual pen are wrapped on the support bar that this connecting rod contacts.
In further preferred technical scheme, the winding knot of A blowing layer contacts with the winding knot of B blowing layer again; Be preferably between two and contact with each other.So, further increased the stability of support level direction.
In the present invention, the fixture that A blowing layer and B blowing layer comprise is regular three-dimensional shape, such as cylinder, cuboid, hexagon cylinder etc.; Be preferably cylinder.The fixture shape that A blowing layer comprises with B blowing layer can be identical, also can be different, as long as the fixture that B blowing layer support bar cover has can snap in the fixture concave surface that A blowing layer support bar cover has.
In the present invention, between A blowing layer and B blowing layer, on-fixed is connected, and the copper facing metallic plate that is covered with copper alloy powder is placed on the connecting rod of blowing layer.During actual production, the 5 layers of support that consist of B blowing layer/A blowing layer/B blowing layer/A blowing layer/B blowing layer of take are example: first on the connecting rod of a B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on a B blowing layer, place an A blowing layer; On the connecting rod of an A blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on an A blowing layer, place the 2nd B blowing layer; On the connecting rod of the 2nd B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on the 2nd B blowing layer, place the 2nd A blowing layer; On the connecting rod of the 2nd A blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on the 2nd A blowing layer, place the 3rd B blowing layer; On the connecting rod of the 3rd B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder; Finally the support consisting of 5 layers of blowing layer and 5 layers of copper facing metallic plate that is covered with copper alloy powder are put into meshbeltfurnace in the lump, thus, sintering efficiency has improved 4 times.Whole operating process, comprise the code material process of network access band stokehold and the discharge process after sintering, convenient especially, avoided the obstruction that between support blowing layer, bring in very little gap, guarantee that the copper alloy powder on copper facing metallic plate is not destroyed before sintering simultaneously, thereby guaranteed the uniformity that copper alloy powder distributes.
The invention also discloses and utilize above-mentioned sliding bearing sheet material sintering support to carry out the method for sliding bearing sheet material sintering, comprise the following steps, the copper facing metallic plate that is covered with copper alloy powder is inserted in sliding bearing sheet material sintering support; Then by inserting in meshbeltfurnace with the support that is covered with the copper facing metallic plate of copper alloy powder, carry out sintering processes, complete the sintering of sliding bearing sheet material.
In technique scheme, sintering processes technique is relevant with copper alloy powder kind, such as in copper alloy powder, when plumbous mass fraction is 0～5%, sintering processes technique is prior to 750～890 ℃, sintering 15～30min, then in 890～950 ℃, sintering 35～50min; In copper alloy powder, when plumbous mass fraction is 5～30%, sintering processes technique is prior to 700～800 ℃, sintering 15～30min, and then in 800～860 ℃, sintering 35～50min.
In technique scheme, meshbeltfurnace belongs to prior art, and it is produced for streamline, and conveyer belt is delivered to meshbeltfurnace sintering zone by sheet material to be sintered, completes after sintering, and the sheet material sintering is transported out by conveyer belt; According to the condition of production, one group of sheet material connects one group processing.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1, the present invention discloses a kind of sliding bearing sheet material sintering support first, can realize the vertical multi-layer of sliding bearing sheet material and place, and has saved space, and efficiency is maximum improves 12 times, significantly promotes the production quantity of unit interval.
2, sliding bearing sheet material sintering supporting structure Sizes disclosed by the invention, guaranteed in sliding bearing sheet material sintering process processing procedure, sheet material heat distribution and sintering atmosphere uniformity between layers, not only guaranteed that the sliding bearing sheet material each several part quality after every layer of sintering is even, and the steady quality of a set product, product percent of pass 100% have been guaranteed.
3, sliding bearing sheet material sintering support disclosed by the invention, can realize discharging frame stacking flexibly, easy to operate, can select as required blowing number and can regulate and control the discharging frame quantity on a collection of production line layer by layer, meet customer need more neatly and do not waste resource.
4, sliding bearing sheet material sintering support disclosed by the invention, discharging frame is connected and is made code material, discharging conveniently by fixture on-fixed between layers, has avoided prior art injury to plate surface in code material discharge process; Simultaneously by the mutual card of each layer of fixture, make stacking firmly between layers, support can keep relatively static on the sintering belt of motion, is difficult for rocking.
5,, in sliding bearing sheet material sintering support disclosed by the invention, the winding knot that discharging frame arranges has between layers increased support contact point between layers on the one hand, has strengthened stability; The side of two winding knots that levels is adjacent in addition contacts with each other and makes support more firm.
6, support preparation disclosed by the invention is simple, can be recycled, and maintenance cost is low; While utilizing it to carry out sliding bearing sheet material sintering, easy to use, the product quality obtaining is high, and sintering efficiency is high, has solved existing sintering inefficiency, sintering poor quality and a unsettled difficult problem, is applicable to very much industrial applications.
Accompanying drawing explanation
Fig. 1 is the structural representation of sliding bearing sheet material sintering support in embodiment mono-;
Fig. 2 is the structural representation of fixture in sliding bearing sheet material sintering support in embodiment mono-;
Fig. 3 is the structural representation of sliding bearing sheet material sintering support in embodiment bis-;
Fig. 4 is the structural representation of fixture in sliding bearing sheet material sintering support in embodiment bis-;
Fig. 5 is the structural representation of sliding bearing sheet material sintering support in embodiment tri-;
Fig. 6 is the structural representation of fixture in sliding bearing sheet material sintering support in embodiment tri-;
Fig. 7 is the structural representation of sliding bearing sheet material sintering support in embodiment tetra-;
Fig. 8 is the structural representation of sliding bearing sheet material sintering support in embodiment five;
Fig. 9 is the structural representation of fixture in sliding bearing sheet material sintering support in embodiment five;
Figure 10 is the structural representation of sliding bearing sheet material sintering support in embodiment six;
Figure 11 is the structural representation of fixture in sliding bearing sheet material sintering support in embodiment six;
Figure 12 is the structural representation of sliding bearing sheet material sintering support in embodiment seven;
Figure 13 is the metallograph of first group of sheet material, the 4th group of sheet material in embodiment 13;
Figure 14 is the metallograph of second group of sheet material in embodiment 13;
Figure 15 is the metallograph of the 3rd group of sheet material in embodiment 13;
Wherein, 1 is that support, 2 is for A blowing layer, 3 is for B blowing layer, 21 is for support bar, 22 is for connecting rod, 23 is for fixture, 31 is for support bar, 32 is for connecting rod, 33 is for fixture, 231 is for opening up concave surface, 232 is for downward opening concave surface, 221 is for being wound around knot, 222 for being wound around knot, 321 for being wound around knot, 322 for being wound around knot.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment mono-:
Referring to accompanying drawing 1-2, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3; Described A blowing layer 2 comprises two support bars 21 and two connecting rods 22; The two ends of described support bar are all overlapped fixture 23; All fixtures are all cylindrical shape, and its surface is all provided with opening up concave surface 231; Described B blowing layer 3 comprises two support bars 31 and five connecting rods 32; The two ends of all support bars are all overlapped fixture 33; All fixtures are all cylindrical shape; All fixtures can both correspondence snap in concave surface 231; In five connecting rods, there are three connecting rods between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described support bar and connecting rod are weldingly connected; Total number of plies of described blowing layer is 2 layers, and B blowing layer is positioned at A blowing layer top; The cross-sectional area of described support bar is 12mm
2.
Embodiment bis-:
Referring to accompanying drawing 3-4, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3; Described A blowing layer 2 comprises three support bars 21 and four connecting rods 22; The two ends of all support bars are all overlapped fixture 23; All fixtures are cylindrical shape, and its surface is provided with opening up concave surface 231 and downward opening concave surface 232; Described B blowing layer 3 comprises three support bars 31 and six roots of sensation connecting rod 32; The two ends of all support bars are all overlapped fixture 33; All fixtures are all cylindrical shape; All fixtures can both snap in corresponding concave surface 231 and concave surface 232;
Described support bar and connecting rod are weldingly connected; Total number of plies of described blowing layer is 3 layers, and A blowing layer is between two-layer B blowing layer; The cross-sectional area of described support bar is 5mm
2.
Embodiment tri-:
Referring to accompanying drawing 5-6, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3; Described A blowing layer 2 comprises three connecting rods 22 and two support bars 21; The two ends of described support bar 21 are all overlapped fixture 23; All fixtures are cylindrical shape, and its surface is provided with downward opening concave surface 232; The two ends of a connecting rod in described connecting rod 22 respectively individual pen are wrapped in formation winding knot 221 on the support bar being in contact with it, are wound around knot 222; Winding knot 221, winding knot 222 contact with the support bar of B blowing layer respectively; In three connecting rods, there is a connecting rod between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described B blowing layer 3 comprises three connecting rods 32 and two support bars 31; The two ends of described support bar are all overlapped fixture 33; All fixtures are cylindrical shape; Described fixture can snap in corresponding concave surface 232; The two ends of a connecting rod in described connecting rod 32 respectively individual pen are wrapped in formation winding knot 321 on the support bar being in contact with it, are wound around knot 322; Winding knot 321, winding knot 322 contact with the support bar of A blowing layer respectively; In three connecting rods, there is a connecting rod between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Total number of plies of described blowing layer is 2 layers, and A blowing layer is positioned at B blowing layer top; The cross-sectional area of described support bar is 16mm
2.
Embodiment tetra-:
Referring to accompanying drawing 7, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3;
Described A blowing layer 2 comprises three connecting rods 22 and two support bars 21; The two ends of described support bar 21 are all overlapped fixture 23; All fixtures are cylindrical shape, and its surface is provided with opening up concave surface 231; The two ends of three connecting rods respectively individual pen are wrapped in formation winding knot 221 on the support bar being in contact with it, are wound around knot 222; Winding knot 221, winding knot 222 contact with the support bar of B blowing layer respectively; In three connecting rods, there is a connecting rod between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described B blowing layer 3 comprises three connecting rods 32 and two support bars 31; The two ends of described support bar are all overlapped fixture 33; All fixtures are cylindrical shape; Described fixture 33 can snap in corresponding concave surface 231; The two ends of three connecting rods respectively individual pen are wrapped in formation winding knot 321 on the support bar being in contact with it, are wound around knot 322; Winding knot 321, winding knot 322 contact with the support bar of A blowing layer respectively; In three connecting rods, there is a connecting rod between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Being wound around knot 221 contacts with each other with the side that is wound around knot 321; Being wound around knot 222 contacts with each other with the side that is wound around knot 322; Being wound around knot is welded and fixed with the contact portion increase of support bar;
Total number of plies of described blowing layer is 2 layers, and A blowing layer is positioned at B blowing layer below; The cross-sectional area of described support bar is 25mm
2.
Embodiment five:
Referring to accompanying drawing 8-9, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3; Described A blowing layer 2 comprises two support bars 21 and three connecting rods 22; The two ends of described support bar are all overlapped fixture 23; All fixtures are rectangular shape, and its surface is provided with opening up concave surface 231 and downward opening concave surface 232; In three connecting rods, there is a connecting rod between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described B blowing layer 3 comprises two support bars 31 and two connecting rods 32; The two ends of described support bar are all overlapped fixture 33; All fixtures are rectangular shape; Described fixture 33 can snap in corresponding concave surface 231 and concave surface 232;
Described connecting rod inserts in support bar; Total number of plies of described blowing layer is 3 layers, and A blowing layer is between two-layer B blowing layer; The cross-sectional area of described support bar is 50mm
2.
Embodiment six:
Referring to accompanying drawing 10-11, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3; Described A blowing layer 2 comprises two support bars 21 and four connecting rods 22; The two ends of described support bar are all overlapped fixture 23; Described fixture 23 is regular hexahedron shape, and its surface is provided with opening up concave surface 231;
Described B blowing layer 3 comprises two support bars 31 and four connecting rods 32; The two ends of described support bar are all overlapped fixture 33; Described fixture 33 is cylindrical shape; Described fixture 33 can snap in corresponding concave surface 231;
Described support bar is connected by screw with connecting rod; Total number of plies of described blowing layer is 2 layers, and B blowing layer is positioned at A blowing layer top; The cross-sectional area of described support bar is 30mm
2.
Embodiment seven:
Referring to accompanying drawing 12, a kind of sliding bearing sheet material sintering support 1, comprises A blowing layer 2 and B blowing layer 3; Described A blowing layer 2 comprises two support bars 21 and two connecting rods 22; The two ends of described support bar are all welded with fixture 23; All fixtures are cylindrical shape, and its surface is provided with opening up concave surface;
Described B blowing layer 3 comprises two support bars 31 and two connecting rods 32; The two ends of the described support bar fixture 33 that has all been threaded; All fixtures are cylindrical shape; Described fixture 33 can snap in corresponding concave surface;
Described support bar and connecting rod are weldingly connected; Total number of plies of described blowing layer is 2 layers, and B blowing layer is positioned at A blowing layer top; The cross-sectional area of described support bar is 10mm
2.
Embodiment eight:
A sliding bearing sheet material sintering support, comprises A blowing layer and B blowing layer; Described A blowing layer comprises two support bars and six roots of sensation connecting rod; The two ends of described support bar are all overlapped fixture; All fixtures are cylindrical shape, and its surface is provided with downward opening concave surface, or are provided with opening up concave surface and downward opening concave surface simultaneously; In six roots of sensation connecting rod, there are four connecting rods between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described B blowing layer comprises two support bars and six roots of sensation connecting rod; The two ends of described support bar are all overlapped fixture; All fixtures are cylindrical shape; Described fixture can snap in the concave surface of corresponding A blowing layer; In six roots of sensation connecting rod, there are four connecting rods between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described support bar and connecting rod are weldingly connected; Total number of plies of described blowing layer is 10 layers, and A blowing layer and B blowing layer are staggeredly stacked, and bottom is B blowing layer; The cross-sectional area of described support bar is 60mm
2.
Embodiment nine:
A sliding bearing sheet material sintering support, comprises A blowing layer and B blowing layer;
Described A blowing layer comprises two support bars and six roots of sensation connecting rod; The two ends of described support bar are all overlapped fixture; All fixtures are cylindrical shape, and its surface is provided with downward opening concave surface, or are provided with opening up concave surface and downward opening concave surface simultaneously; The two ends of six roots of sensation connecting rod respectively individual pen are wrapped in formation winding knot on the support bar being in contact with it; Being wound around knot contacts with the support bar of B blowing layer; In six roots of sensation connecting rod, there are four connecting rods between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
Described B blowing layer comprises two support bars and six roots of sensation connecting rod; The two ends of described support bar are all overlapped fixture; All fixtures are cylindrical shape; Described fixture can snap in the concave surface of A blowing layer; The two ends of six roots of sensation connecting rod respectively individual pen are wrapped in formation winding knot on the support bar being in contact with it; Being wound around knot contacts with the support bar of A blowing layer; In six roots of sensation connecting rod, there are four connecting rods between the fixture at support bar two ends, there is a connecting rod between fixture support bar end points close with this fixture, have a connecting rod between another fixture support bar end points close with this fixture;
The winding knot of A blowing layer contacts with each other between two with the winding knot of B blowing layer; Being wound around knot is welded and fixed with the contact portion increase of support bar;
Described support bar and connecting rod are weldingly connected; Total number of plies of described blowing layer is 12 layers, and A blowing layer and B blowing layer are staggeredly stacked, and bottom is B blowing layer; The cross-sectional area of described support bar is 12mm
2.
Embodiment ten:
A sliding bearing sheet material sintering support, comprises A blowing layer and B blowing layer; Described A blowing layer comprises two support bars and five connecting rods; The two ends of described support bar are all overlapped fixture; All fixtures are square shape, and its surface is provided with opening up concave surface, or are provided with opening up concave surface and downward opening concave surface simultaneously; The two ends of five connecting rods respectively individual pen are wrapped in formation winding knot on the support bar being in contact with it; Being wound around knot contacts with the support bar of B blowing layer;
Described B blowing layer comprises two support bars and five connecting rods; The two ends of described support bar are all overlapped fixture; All fixtures are square shape; Described fixture can snap in the concave surface of A blowing layer; The two ends of five connecting rods respectively individual pen are wrapped in formation winding knot on the support bar being in contact with it; Being wound around knot contacts with the support bar of A blowing layer;
The winding knot of A blowing layer contacts with each other between two with the winding knot of B blowing layer; Being wound around knot is welded and fixed with the contact portion increase of support bar;
Described support bar and connecting rod are weldingly connected; Total number of plies of described blowing layer is 8 layers, and A blowing layer and B blowing layer are staggeredly stacked, and bottom is A blowing layer; The cross-sectional area of described support bar is 100mm
2.
Embodiment 11:
The support of embodiment ten of take is example, carries out sliding bearing sheet material sintering, and copper alloy powder used is CuPb10Sn10.
First on the connecting rod of an A blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on an A blowing layer, place a B blowing layer; On the connecting rod of a B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on a B blowing layer, place the 2nd A blowing layer; On the connecting rod of the 2nd A blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on the 2nd A blowing layer, place the 2nd B blowing layer; Repeating step; Finally obtain the support and the 8 layers of sample that the copper facing metallic plate that is covered with copper alloy powder forms that by 8 layers of blowing layer, are formed.
Sample is put on the conveyer belt of meshbeltfurnace, entered in meshbeltfurnace, in 700 ℃, sintering 20min, then in 830 ℃, sintering 40min completes the sintering of sliding bearing sheet material.
Embodiment 12:
The support of embodiment nine of take is example, carries out sliding bearing sheet material sintering, and copper alloy powder used is QFQSn8-3.
First on the connecting rod of a B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on a B blowing layer, place an A blowing layer; On the connecting rod of an A blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on an A blowing layer, place the 2nd B blowing layer; On the connecting rod of the 2nd B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on the 2nd B blowing layer, place the 2nd A blowing layer; Repeating step; Finally obtain the support and the 12 layers of sample that the copper facing metallic plate that is covered with copper alloy powder forms that by 12 layers of blowing layer, are formed.
Sample is put on the conveyer belt of meshbeltfurnace, entered in meshbeltfurnace, in 800 ℃, sintering 20min, then in 915 ℃, sintering 40min completes the sintering of sliding bearing sheet material, the sheet material after sintering is designated as first group of sheet material.
The support of embodiment bis-of take is example, carries out sheet material sintering, and copper alloy powder used is QFQSn8-3.
First on the connecting rod of a B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on a B blowing layer, place an A blowing layer; On the connecting rod of an A blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, then on an A blowing layer, place the 2nd B blowing layer; On the connecting rod of the 2nd B blowing layer, place the copper facing metallic plate that one deck is covered with copper alloy powder, obtain the support and the 3 layers of sample that the copper facing metallic plate that is covered with copper alloy powder forms that by 3 layers of blowing layer, are formed.
Sample is put on the conveyer belt of meshbeltfurnace, entered in meshbeltfurnace, in 800 ℃, sintering 20min, then in 915 ℃, sintering 40min completes the sintering of sliding bearing sheet material, the sheet material after sintering is designated as second group of sheet material.
Comparative example one:
Copper alloy powder used is QFQSn8-3,1 layer of copper facing metallic plate that is covered with copper alloy powder is placed on steel plate, then covers one deck steel plate, then on steel plate, puts 1 layer of copper facing metallic plate that is covered with copper alloy powder again; Repeating step; Finally obtain being covered with by 3 layers of steel plate and 3 layers the sample that the copper facing metallic plate of copper alloy powder forms, sample is put on the conveyer belt of meshbeltfurnace, enter in meshbeltfurnace, in 800 ℃, sintering 20min, in 915 ℃, sintering 40min completes the sintering of sliding bearing sheet material again, and the sheet material after sintering is designated as the 3rd group of sheet material.
Comparative example two:
Copper alloy powder used is QFQSn8-3, using 1 layer of copper facing metallic plate that is covered with copper alloy powder as sample, sample is put on the conveyer belt of meshbeltfurnace, enter in meshbeltfurnace, in 800 ℃, sintering 20min, then in 915 ℃, sintering 40min completes the sintering of sliding bearing sheet material, and the sheet material after sintering is designated as the 4th group of sheet material.
Embodiment 13:
First group of sheet material, second group of sheet material, the 3rd group of sheet material and the 4th group of sheet material are carried out to performance test, and method of testing and result are as follows:
1, sheet material copper layer bond strength check
The first step: get the exemplar of a long 200mm of wide 15mm, and fixing exemplar middle part;
Second step: sampling part middle part is along crooked approximately 90 degree of steel plate direction;
The 3rd step: sampling part middle part is again along crooked approximately 90 degree of copper layer direction;
The 4th step: continue along crooked approximately 180 degree of copper layer direction sampling part middle part again.
Differentiate: crooked 180 degree copper layers have pattern cracking but without delamination, cut a hole copper layer, after copper layer chisels out with chisel along interlayer junction, if steel plate surface leaves a large amount of copper alloy powders, bond strength is judged to be qualifiedly, and as steel plate surface is stayed steel plate surface without copper alloy powder substantially, bond strength is judged to be defective.
Result: the copper layer bond strength of the 4th group of sheet material and first group of sheet material, second group of sheet material is good, and between every laminate material of first group of sheet material, second group of sheet material and the copper layer bond strength uniformity of the each several part of every laminate material;
The 3rd group of sheet material copper layer binding strength skewness, topmost the copper layer bond strength of layer of plate is better; The copper layer bond strength of the sheet material between orlop and intermediate layer steel plate is defective, and the copper layer bond strength of the mid portion of this sheet material is the poorest, lower than the bond strength of surrounding copper layer.
2, sheet material hardness analysis
Steel plate hardness after adopting Brinell hardness analyzer to sintering is measured, and every plate centre and four jiaos of totally five places measurements, to reduce error.The results are shown in Table 1, as shown in Table 1:
The hardness of the 4th group of sheet material and first group of sheet material, second group of sheet material is good, and between every laminate material of support sintering and the hardness uniformity of the each several part of every laminate material, differs in 1HB;
In the 3rd group of sheet material, the hardness of uppermost sheet material (the 3rd layer) is significantly less than the bottom (the 1st layer) and intermediate layer (the 2nd layer); And layers 1 and 2 sheet material middle part hardness is bigger than normal, and edge hardness is less than normal, and hardness differs by more than 3HB.
The HB of hardness/unit of each sheet material of table 1 and each sheet material different parts
| Test sheet material | The upper left corner | The lower left corner | Middle | The upper right corner | The lower right corner |
| First group the 1st layer | 80 | 80 | 80 | 81 | 81 |
| First group the 2nd layer | 81 | 80 | 80 | 80 | 80 |
| First group the 3rd layer | 80 | 80 | 81 | 80 | 80 |
| First group the 4th layer | 80 | 80 | 80 | 80 | 81 |
| First group the 5th layer | 80 | 81 | 80 | 80 | 80 |
| First group the 6th layer | 80 | 80 | 80 | 80 | 81 |
| First group the 7th layer | 80 | 80 | 81 | 80 | 80 |
| First group the 8th layer | 81 | 80 | 80 | 80 | 81 |
| First group the 9th layer | 81 | 80 | 81 | 81 | 81 |
| First group the 10th layer | 81 | 81 | 80 | 80 | 80 |
| First group of 11th layer | 80 | 80 | 81 | 80 | 80 |
| First group the 12nd layer | 80 | 80 | 80 | 81 | 80 |
| Second group the 1st layer | 80 | 80 | 80 | 80 | 80 |
| Second group the 2nd layer | 81 | 80 | 81 | 80 | 80 |
| Second group the 3rd layer | 80 | 80 | 81 | 80 | 80 |
| The 4th group | 80 | 80 | 80 | 81 | 80 |
| The 3rd group the 1st layer | 82 | 81 | 86 | 85 | 82 |
| The 3rd group the 2nd layer | 83 | 84 | 87 | 82 | 83 |
| The 3rd group the 3rd layer | 82 | 82 | 83 | 81 | 82 |
3, copper layer distributes
Accompanying drawing 13-15 is respectively the metallograph of first group of the 1st laminate material (Figure 13 A), first group of the 6th laminate material (Figure 13 B), first group of the 12nd laminate material (Figure 13 C), the 4th group of sheet material (Figure 13 D), second group of the 1st laminate material (Figure 14 A), second group of the 2nd laminate material (Figure 14 B), second group of the 3rd laminate material (Figure 14 C) and the 3rd group the 3rd layer (one deck topmost) sheet material (Figure 15 A), the 3rd group of the 2nd laminate material (Figure 15 B), the 3rd group of the 1st laminate material (Figure 15 C); The copper layer that can find out the sheet material by support sintering of the present invention is evenly distributed, consistent with individual layer sintering, and adopts steel plate to separate the sheet material copper layer skewness of sintering.
To sum up, by the sliding bearing sheet material of support sintering of the present invention, performance is consistent between every laminate material and between the each several part of every laminate material, and suitable with the performance of individual layer sintering sheet material, without defective products; Sheet material sintering inefficiency in prior art, the unsettled difficult problem of sintering quality have successfully been solved.
Claims (10)
1. a sliding bearing sheet material sintering support, is characterized in that: comprise A blowing layer and B blowing layer;
Described A blowing layer comprises support bar and connecting rod; Described support bar is connected by connecting rod; The two ends of described support bar are equipped with fixture; Described fixture is regular three-dimensional shape; Described fixture is provided with opening up concave surface or opening down concave surface, or is provided with opening up concave surface and opening down concave surface simultaneously;
Described B blowing layer comprises support bar and connecting rod; Described support bar is connected by connecting rod; The two ends of described support bar are equipped with fixture; Described fixture is regular three-dimensional shape;
The fixture of described B blowing layer can snap in the concave surface of described A blowing layer fixture;
Described A blowing layer and B blowing layer are alternately stacking;
Total number of plies of described blowing layer is 2～12 layers.
2. sliding bearing sheet material sintering support according to claim 1, is characterized in that: in described blowing layer, fixture is enclosed within on support bar; The end points of support bar and be provided with connecting rod between its nearest fixture; The cross-sectional area of support bar is 5～100mm
2.
3. sliding bearing sheet material sintering support according to claim 1, is characterized in that: in described A blowing layer, the two ends of at least one connecting rod respectively individual pen are wrapped on its support bar contacting, and forms and is wound around knot; Described winding knot contacts with the support bar of B blowing layer;
In described B blowing layer, the two ends of at least one connecting rod respectively individual pen are wrapped on its support bar contacting, and form and are wound around knot; Described winding knot contacts with the support bar of A blowing layer.
4. sliding bearing sheet material sintering support according to claim 3, is characterized in that: in described A blowing layer, the two ends of all connecting rods respectively individual pen are wrapped on the support bar that this connecting rod contacts;
In described B blowing layer, the two ends of all connecting rods respectively individual pen are wrapped on the support bar that this connecting rod contacts.
5. sliding bearing sheet material sintering support according to claim 4, is characterized in that: the winding knot of A blowing layer contacts with the winding knot of B blowing layer.
6. sliding bearing sheet material sintering support according to claim 1, is characterized in that: the fixture of described A blowing layer is cylinder, cuboid or positive hexagon cylinder; The fixture of described B blowing layer is cylinder, cuboid or positive hexagon cylinder.
7. sliding bearing sheet material sintering support according to claim 6, is characterized in that: the fixture of described A blowing layer is cylinder; The fixture of described B blowing layer is cylinder.
8. sliding bearing sheet material sintering support according to claim 1, is characterized in that: in described A blowing layer, support bar quantity is 2 or 3; In described B blowing layer, support bar quantity is 2 or 3.
9. a method of utilizing any one sliding bearing sheet material sintering support described in claim 1～8 to carry out sliding bearing sheet material sintering, it is characterized in that, comprise the following steps: the copper facing metallic plate that is covered with copper alloy powder is inserted in sliding bearing sheet material sintering support; Then by inserting in meshbeltfurnace with the support that is covered with the copper facing metallic plate of copper alloy powder, carry out sintering processes, complete the sintering of sliding bearing sheet material.
10. method according to claim 9, is characterized in that: in copper alloy powder, when plumbous mass fraction is 0～5%, sintering processes technique is prior to 750～890 ℃, sintering 15～30min, and then in 890～950 ℃, sintering 35～50min; In copper alloy powder, when plumbous mass fraction is 5～30%, sintering processes technique is prior to 700～800 ℃, sintering 15～30min, and then in 800～860 ℃, sintering 35～50min.
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| US6042778A (en) * | 1996-12-14 | 2000-03-28 | Federal-Mogul Deva Gmbh | Sliding bearing and method of making a sliding bearing material |
| CN1775426A (en) * | 2005-11-24 | 2006-05-24 | 上海核威实业有限公司 | Process for manufacturing phosphor bronze-steel bimetal bearing material with phosphor content more than 0.1% |
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Denomination of invention: Sliding bearing plate sintering method and supporting frame used in method Effective date of registration: 20190510 Granted publication date: 20161026 Pledgee: Zhejiang Jiashan rural commercial bank Limited by Share Ltd science and technology sub branch Pledgor: Jiaxing Li Xin new material Co., Ltd. Registration number: 2019990000415 |
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