Wear-resisting cheater plate and wearing-cutting ring
Technical field
The invention belongs to concrete pump, be specifically related to the cheater plate and the cut ring of concrete pump.
Background technology
Cheater plate and cut ring are to drag a kind of fragile part of concreting machinery equipment adapteds such as pump, pump truck and Vehicle loaded pump.
Existing cheater plate has following several according to structure or making method difference:
First kind: cheater plate is made of parent, Wimet neck ring, trim ring and Wimet star nail.Neck ring is embedded in the place, two holes of cheater plate parent, and the star nail is uniformly clouded in easily-worn position on the parent.
Second kind: comprise steel billet body and cemented carbide body.The steel billet external surface adopts burn-on carbide ring and polylith Wimet liner plate of soldering to do wearing layer, and build-up wear-resistant material on the inner hole wall.
The third: direct built-up welding one deck high-abrasive material on steel body surface plane and endoporus.
The 4th kind: this cheater plate structure and second kind are similar, making method difference just, and it is to cast the cheater plate that the method for seting welding carbide body is made with molten steel.Promptly before cast steel billet body, cemented carbide body is put into the sand mo(u)ld of Pour Steel, pour molten steel then into and make alloy surface molten molten, in molten steel solidification, cemented carbide body is also watered and is welded on the steel billet body.
The 5th kind: adopt the bimetal manufacture method.At first make the mould of cheater plate shape, put into sandbox, the carbon tungsten alloy powder is coated on the corresponding wear-resisting position of mould, under negative pressure state, 45 molten steel castings in mould, are made wolfram varbide bimetal cheater plate with expanded plastic.
Existing cut ring has following several according to structure or making method difference:
First kind: comprise steel billet body and cemented carbide body.The steel billet external surface adopts the soldering carbide ring of burn-oning to do wearing layer, and build-up wear-resistant material on the inner hole wall.
Second kind: direct built-up welding one deck high-abrasive material on steel body surface plane and endoporus.
The third: this cut ring structure and first kind are similar, making method difference just, it is to cast the cut ring that the method for seting welding carbide body is made with molten steel.Promptly before cast steel billet body, cemented carbide body is put into the sand mo(u)ld of Pour Steel, pour molten steel then into and make alloy surface molten molten, in molten steel solidification, cemented carbide body is also watered and is welded on the steel billet body.
The 4th kind: adopt the bimetal manufacture method.At first make the annular mould of cutting, put into sandbox, the carbon tungsten alloy powder is coated on the corresponding wear-resisting position of mould, under negative pressure state, 45 molten steel castings in mould, are made wolfram varbide bimetal cut ring with expanded plastic.
But there are the following problems for existing above-mentioned each cheater plate and cut ring:
1). structure is complicated, component parts is many, and the inefficacy link is many under wearing and tearing, ballistic operating mode, and working reliability is lower.
2). except that Wimet, ring-type parent and brazing gap portion wear resistance are relatively poor.After mother metal or the brazing wearing and tearing, Wimet exposes, and very easily bursts apart after impacting with the concrete building stones, causes the very fast inefficacy of cheater plate, cut ring.
3). adopt the wearing layer of bead-welding technology, owing to limited by complete processing, the wear resistance of welding rod material is not very good, cause cheater plate and cut ring wear resisting property poor easily, and the built-up welding moulding is also relatively poor.
4). the existing bulk material in cheater plate or cut ring surface, resurfacing welding material and Wimet are arranged again, the hardness of various materials and wear resistance difference are processed into also difficulty of a plane.
5). the carbon tungsten alloy powder is coated in on the foamed plastics mold, pours into the cheater plate and the cut ring of the method manufacturing of 45 molten steel then, and its carbon tungsten alloy powder comes off easily, the aggravation abrasive wear, and the obdurability of wearing layer is poor.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provides a kind of simple in structure, and is whole wear-resisting, the cheater plate of long service life and cut ring.
For solving the problems of the technologies described above, the present invention adopts following technical proposals:
Wear-resisting cheater plate of the present invention, comprise the steel billet body, the steel billet body is provided with two through holes, it is characterized in that the complex abrasion-proof body that castingin has the granule reinforced steel matrix composite abrasion resistance material to make in described steel billet external surface and the through hole, the castingin of described complex abrasion-proof body be with in, after low-carbon (LC) highquality carbon steel or the melting of carbon element steel alloy steel billet, adding size is that 10~60 purpose enhanced granule obtain granule reinforced steel matrix composite abrasion resistance material liquation, then granule reinforced steel matrix composite abrasion resistance material liquation is watered and cast from the model cavity that presets the steel billet body, granule reinforced steel matrix composite abrasion resistance material liquation makes the steel billet surface molten molten, treat to obtain after liquation solidifies the cheater plate cast blank formed by steel billet body and complex abrasion-proof body, again through machining, carry out air quenching and low-temperature tempering heat treatment and get finished product.
Wearing-cutting ring of the present invention, described cut ring is made up of the complex abrasion-proof body of castingin in the large end face of cut ring steel billet body and steel billet body and the through hole, described complex abrasion-proof body is made by the granule reinforced steel matrix composite abrasion resistance material, the castingin of described complex abrasion-proof body be with in, after low-carbon (LC) highquality carbon steel or the melting of carbon element steel alloy steel billet, adding size is that 10~60 purpose enhanced granule obtain granule reinforced steel matrix composite abrasion resistance material liquation, then granule reinforced steel matrix composite abrasion resistance material liquation is watered and cast from the sand mo(u)ld die cavity that presets the steel billet body, granule reinforced steel matrix composite abrasion resistance material liquation makes the steel billet surface molten molten, treat to obtain after liquation solidifies the cut ring cast blank formed by steel billet body and complex abrasion-proof body, again through machining, carry out air quenching and low-temperature tempering heat treatment and get finished product.
In described, the mass ratio of low-carbon (LC) highquality carbon steel or carbon element steel alloy and enhanced granule is 9: 1~2: 1.Described enhanced granule comprises WC particle or hard alloy particle or SiC particle or Al
2O
3Particle or TiC particle or VC particle or two or more composite grain in them.
Quench and tempering heat treatment before wear-resisting cheater plate of the present invention and the wearing-cutting ring finished product.
Beneficial effect of the present invention is:
1, cheater plate of the present invention and cut ring structure and production technique thereof are simple, easy to process;
2, the complex abrasion-proof body of cheater plate and cut ring is a same material, and homogeneous microstructure has overcome the deficiency of conventional production methods, braze wilding and bead-welding technology have been saved, working portion does not have weak link, and the complex abrasion-proof body combines closely with the steel billet body, has improved overall wear resistance and working reliability;
3, the cut ring that forms of monoblock casting its wholely be same material, overcome the deficiency of conventional production methods, saved braze wilding and bead-welding technology, working portion does not have weak link.
4, particle strengthens the advantage that composite abrasion resistance material had both had high rigidity, high-wearing feature, has the strong point of high strength, high tenacity again, has prolonged the work-ing life of cheater plate and cut ring greatly.
5, by thermal treatment, the steel matrix structure property that particle strengthens in the composite abrasion resistance material is strengthened, and has improved the supporting capacity to enhanced granule, reduces coming off of enhanced granule, has strengthened wear-resistant grain polishing machine.
Description of drawings
Fig. 1 is the structural representation front view of cheater plate embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation front view of cheater plate steel billet body;
Fig. 4 is the B-B sectional view of Fig. 3;
Fig. 5 is the structural representation of the split type cut ring embodiment of the present invention;
Fig. 6 is the structural representation of the split type cut ring steel billet of the present invention body;
Fig. 7 is the structural representation of monoblock type cut ring of the present invention.
Each label is represented among the figure:
1, steel billet body 2, complex abrasion-proof body
11, through hole 12, lower concave part
21, boss 22, cylinder
3, cut ring steel billet body 4, complex abrasion-proof body
31, through hole 32, large end face
41, boss 42, cylinder
5, monoblock type cut ring cast blank
Embodiment
Below in conjunction with accompanying drawing cheater plate of the present invention and cut ring are described further.
Embodiment 1: wear-resisting cheater plate
As shown in Figure 1, 2, wear-resisting cheater plate of the present invention comprises steel billet body 1, and steel billet body 1 is provided with two through holes 11, the complex abrasion-proof body 2 that castingin has the granule reinforced steel matrix composite abrasion resistance material to make in steel billet body 1 outside surface and the through hole 11.As Fig. 3, shown in 4, steel billet body 1 outside surface is provided with lower concave part 12 around through hole 11, through hole 11 is a round taper hole, this round taper hole and lower concave part 12 join the diameter of end less than the diameter of the other end, complex abrasion-proof body 2 is made up of two cylinders 22 and the boss 21 that is positioned at two cylinders, one end, cylinder 22 castingins are on the hole wall of round taper hole, 21 of boss are located at the lower concave part 12 of steel billet body 1, and the outside of cylinder 22 forms and the corresponding taper of round taper hole, because the complex abrasion-proof body 2 that forms is middle little with the joint portion of steel billet body 1, two ends are big, make complex abrasion-proof body 2 combine solid and reliable with steel billet body 1.And the surface of boss 21 is a little more than the outside surface of steel billet body 1.The structure of joint portion when present embodiment has only provided a kind of steel billet body 1 and combines with complex abrasion-proof body 2, but be not limited only to this kind structure.
Above-mentioned granule reinforced steel matrix composite abrasion resistance material is to add the casting WC particle to mix in carbon element steel alloy 42CrMo liquation.Its concrete preparation method is: 42CrMo steel billet 12Kg is added melting in the middle frequency furnace, and adding the 2Kg size then in liquation is 10~60 purposes casting WC particle, gets granule reinforced steel matrix composite abrasion resistance material liquation after mixing.Again granule reinforced steel matrix composite abrasion resistance material liquation is watered and cast from the sand mo(u)ld die cavity that presets steel billet body 1, liquation makes steel billet body 1 surface molten molten, treat that liquation solidifies, the granule reinforced steel matrix composite abrasion resistance material then is cast in the steel billet body 1, become complex abrasion-proof body 2 after the moulding, promptly get the cheater plate cast blank of forming by steel billet body 1 and complex abrasion-proof body 2, again through machining with carry out air quenching and low-temperature tempering heat treatment gets finished product.
Embodiment 2: split type cut ring
Shown in Fig. 5,6, the wearing-cutting ring of present embodiment, comprise cut ring steel billet body 3, cut ring steel billet body 3 is provided with a through hole 31, the complex abrasion-proof body 4 that has the granule reinforced steel matrix composite abrasion resistance material to make with through hole 31 interior castingins on cut ring steel billet body 3 large end faces 32.Set through hole 31 is a round taper hole on the cut ring steel billet body 3, this round taper hole is in the diameter of the cut ring steel billet body 3 large end faces 32 1 ends diameter less than the other end, complex abrasion-proof body 4 is made up of a cylinder 42 and the boss 41 that is positioned at cylinder one end, cylinder 42 castingins are on the hole wall of round taper hole, the outside of cylinder 42 forms and the corresponding taper of round taper hole, 41 of boss cover on cut ring steel billet body 3 large end faces 32, and combination firmly between steel billet body 3 and the complex abrasion-proof body 4.
Above-mentioned granule reinforced steel matrix composite abrasion resistance material is to add the casting WC particle to mix in the A3 molten steel.Its concrete preparation method is: A3 steel billet 12Kg (two cut ring of can casting) is added melting in the middle frequency furnace, and adding the 2Kg size then in liquation is 10~60 purposes casting WC particle, gets granule reinforced steel matrix composite abrasion resistance material liquation after mixing.Again granule reinforced steel matrix composite abrasion resistance material liquation is watered and cast from the sand mo(u)ld die cavity that presets cut ring steel billet body 3, liquation makes cut ring steel billet body 3 surfaces molten molten, treat that liquation solidifies, the granule reinforced steel matrix composite abrasion resistance material then is cast in the cut ring steel billet body 3, become complex abrasion-proof body 4 after the moulding, promptly get the cut ring cast blank of forming by cut ring steel billet body 3 and complex abrasion-proof body 4, again through machining with carry out air quenching and low-temperature tempering heat treatment gets finished product.
Embodiment 3: the monoblock type cut ring
The wearing-cutting ring of this practicality example, as shown in Figure 7, it is to be formed by the monoblock casting of granule reinforced steel matrix composite abrasion resistance material.There is a through hole at the cut ring middle part, and the outside is the stepped appearance cylinder.
Above-mentioned granule reinforced steel matrix composite abrasion resistance material is to add the YG8 hard alloy particle to mix in the 42CrMo liquation.Its concrete preparation method is: 42CrMo steel billet 10Kg is added melting in the middle frequency furnace, and adding the 2Kg size then in liquation is 10~60 purpose YG8 hard alloy particles, gets granule reinforced steel matrix composite abrasion resistance material liquation after mixing.Again granule reinforced steel matrix composite abrasion resistance material liquation is poured in the sand mo(u)ld die cavity, be directly formed to cut ring cast blank 5 after the cooling.Again through machining with carry out oil quenching and average tempering thermal treatment gets finished product.
After making, the granule reinforced steel matrix composite abrasion resistance material part hardness of cheater plate and cut ring reaches 56~62HRC, and through using on concrete pump, the mean lifetime of cheater plate can reach 400 hours, about 2.5 ten thousand sides of delivering concrete; The mean lifetime of cut ring can reach 350 hours, about 2.2 ten thousand sides of delivering concrete, and the life-span is better than the cheater plate and the cut ring of other type greatly.