CN117563716A - Lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve - Google Patents
Lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve Download PDFInfo
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- CN117563716A CN117563716A CN202410005587.9A CN202410005587A CN117563716A CN 117563716 A CN117563716 A CN 117563716A CN 202410005587 A CN202410005587 A CN 202410005587A CN 117563716 A CN117563716 A CN 117563716A
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- wear
- resistant alloy
- lost foam
- metal ceramic
- roller sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve, and belongs to the field of wear-resistant roller sleeve casting. The invention relates to a lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve, which is formed by splicing a plurality of arc-shaped high-chromium wear-resistant alloy roller sleeves sequentially through the side surfaces of the roller sleeves, wherein the outer cambered surfaces of the high-chromium wear-resistant alloy roller sleeves are wear-resistant working surfaces, a plurality of vertical metal ceramic strips are inlaid on the wear-resistant working surfaces at intervals through a lost foam casting method, the characteristics of convenient negative pressure casting of lost foam casting are fully utilized, the high-chromium wear-resistant alloy roller sleeves and the metal ceramic strips can be cast and integrally formed at one time, seamless firm connection is realized, the use amount of the metal ceramic strips can be considered according to both wear resistance and manufacturing cost, and the vertical metal ceramic strips are uniformly distributed in an array manner to promote the synergistic effect of the high-chromium wear-resistant alloy roller sleeves and the metal ceramic strips, so that the wear resistance of the peripheral surface of the whole roller sleeve is increased in multiple.
Description
Technical Field
The invention relates to the field of wear-resistant roll sleeve casting, in particular to a lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roll sleeve.
Background
The lost foam casting method is also called full mold casting method, and is a casting method in which a lost foam formed of polystyrene foam or wax is buried in a sand mold, then molten metal is poured, the lost foam is gasified by the heat of the molten metal, and at the same time, the molten metal is filled in a gap generated after the lost foam is gasified, so as to manufacture a cast product.
In industries such as coal, metallurgy, mine, electric power, building materials, refractory materials, energy sources and the like, a mill is needed, a grinding roller of the mill is used as a main wearing part, the running quality of the grinding roller determines the economic benefit of enterprises to a certain extent, the wear-resisting blocks on the existing grinding roller are mostly made of metals such as high manganese steel, high chromium cast iron and the like, the toughness is good, and after the wear-resisting blocks are worn, the wear-resisting alloy layers are repeatedly deposited on the wear-resisting blocks to improve the service life of the wear-resisting blocks, but because the wear-resisting alloy layers are manufactured by a build-up process, build-up equipment is expensive, build-up welding is carried out once, the service life of the wear-resisting blocks is prolonged, and meanwhile, the replacement of the wear-resisting blocks needs frequent shutdown, the time required for replacing the wear-resisting blocks each time is long, the production efficiency is seriously influenced, and great economic loss is caused.
The metal wear-resistant materials play respective roles in different fields from manganese steel, nickel hard cast iron, high-chromium wear-resistant alloy and surface overlaying materials, but the brittleness is greatly increased along with the gradual increase of the hardness of the wear-resistant materials, and the fracture risk is brought. With the rapid development of science and technology and modern industry, the traditional metal wear-resistant material cannot meet the industrial use requirement, and the requirements of users on the wear-resistant material are higher and higher, so that the wear-resistant material has higher wear resistance and enough toughness. Therefore, it is important to improve the service life of the wear part.
Through searching, related patents are disclosed so far for solving the defect that the abrasion of the grinding roller seriously affects the normal production. For example, chinese patent application, publication No.: CN 103736549a, publication date: the invention patent of 2014, 4 and 23 discloses a preparation method of a grinding roller made of a metal-based ceramic composite material of a vertical mill, wherein a roller sleeve consisting of a high-chromium alloy lining plate and a ceramic lining plate made of a metal-based ceramic reinforcement material is sleeved on a grinding roller base body, and the metal-based ceramic reinforcement material consists of 10-40% corundum and 60-90% iron powder; the preparation method of the grinding roller comprises the following steps: when the corundum and the iron powder are mixed and burned until the iron powder is completely melted, the corundum and the iron powder are placed in a die to prepare a ceramic lining plate, the ceramic lining plate is placed in a groove of a high-chromium alloy lining plate, molten steel is cast to prepare a roller sleeve, and the roller sleeve is arranged on a grinding roller substrate and then molten steel is cast, so that the roller sleeve and the grinding roller substrate are solidified into a whole. The grinding roller is fixedly connected by casting the high-chromium alloy lining plate and the ceramic lining plate as well as the roller sleeve and the grinding roller matrix through molten steel, and the connecting positions of the high-chromium alloy lining plate and the ceramic lining plate are cast through molten steel after the high-chromium alloy lining plate and the ceramic lining plate are cast independently.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the problem that the service life of the existing grinding roller sleeve influences the production of normal abrasive materials, the invention designs the composite roller sleeve of the lost foam casting high-chromium wear-resistant alloy and the metal ceramic strips, and a plurality of vertical metal ceramic strips are inlaid on the wear-resistant working surface of the high-chromium wear-resistant alloy roller sleeve at intervals by the lost foam casting method, so that the purpose of prolonging the service life of the wear-resistant grinding roller sleeve is achieved.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
a composite roller sleeve of high-chromium wear-resistant alloy and metal ceramic strips is formed by sequentially splicing a plurality of arc-shaped high-chromium wear-resistant alloy roller sleeve sides, wherein the outer cambered surface of the high-chromium wear-resistant alloy roller sleeve is a wear-resistant working surface, a plurality of vertical metal ceramic strips are inlaid on the wear-resistant working surface at intervals through a lost foam casting method, the characteristics of convenient negative pressure casting of lost foam casting are fully utilized, the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strips can be cast at one time and integrally formed, seamless firm connection is realized, the use amount of the metal ceramic strips can be considered according to the combination of wear resistance and manufacturing cost, the vertical metal ceramic strips are uniformly distributed in an array mode, the synergistic effect of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strips is promoted, and the wear resistance of the peripheral surface of the whole roller sleeve wear-resistant working surface is increased in multiple.
According to the technical scheme, the metal ceramic strip comprises a bending head at the head part of the metal ceramic strip, the bending head is matched with the cambered surface of the wear-resistant working surface, when the wear-resistant working surface is worn to a certain extent, the bending head can hook the roller side in the grinding process, and the whole metal ceramic strip can be tightly pulled on the wear-resistant working surface, so that the connection strength of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strip is improved.
According to the technical scheme, the metal ceramic strips extend out of the lugs arranged at intervals to the side surfaces of the metal ceramic strips, the lugs are distributed in a lattice mode on the whole wear-resistant working face and cooperate with the metal ceramic strips in a vertical array mode, the connection strength of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strips is further improved, the uniformity of the wear resistance distribution of the whole wear-resistant working face is improved, and the effect of local abrasion on the service life of the high-chromium wear-resistant alloy roller sleeve and the service life of the metal ceramic strips are effectively avoided.
According to the technical scheme, the metal ceramic strip is divided into two parts, namely the bending head and the square straight strip, so that the two independent different monomers can be respectively processed, packaged and transported, and the lost foam can be independently embedded in the lost foam casting process, and the metal ceramic strip is convenient to operate, high in efficiency and low in cost.
According to the technical scheme, the high-chromium wear-resistant alloy roller sleeve is formed by casting through a lost foam casting process by using a lost foam matrix which is matched with the high-chromium wear-resistant alloy roller sleeve; the groove strips which are matched with the metal ceramic strips and distributed at intervals are reserved on the outer cambered surface of the lost foam substrate, protruding ribs are formed between the groove strips, the groove strips and the protruding ribs are staggered and distributed uniformly in a vertical array mode, the material of the lost foam substrate has certain elasticity, the embedded operation of the metal ceramic strips is convenient, moreover, the width of the metal ceramic strips can be slightly larger than that of the groove strips, when the metal ceramic strips are embedded, the metal ceramic strips are connected in a close-fitting mode, and after lost foam casting is completed, the connection strength of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strips can be further improved.
According to the technical scheme, the convex ribs are reserved with edge grooves for adapting to the convex blocks, the convex ribs are matched with the convex blocks distributed in a dot matrix mode, the edge length of the convex blocks can be slightly larger than that of the edge grooves, and tight fit connection of the convex ribs and the edge grooves is achieved when the convex ribs are embedded.
According to the technical scheme, the radian of the high-chromium wear-resistant alloy roller sleeve and the radian of the lost foam substrate are 45 degrees, and after 8 roller sleeve monomers are connected end to end, an integral roller sleeve grinding roller is formed, the radian is too large, the weight of the monomers is too large, the packaging or the transportation is inconvenient, and the radian is too small, so that the connection strength between the monomers is affected.
According to the technical scheme, before lost foam casting, the difference between the depth M of the groove strip and the thickness N of the metal ceramic strip is M-N is more than or equal to 1.0-1.7 mm, after lost foam casting, the prepared high-chromium wear-resistant alloy roller sleeve can fully cover a connecting gap between the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strip, a seamless connection integrated structure is realized, and the connecting strength of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strip is further improved.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) According to the lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve, metal ceramic strips and lattice-type distributed lugs are uniformly distributed on the vertical array type wear-resistant working surface of the high-chromium wear-resistant alloy roller sleeve, the synergistic interaction of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strips can be effectively improved, the connection relationship between the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strips is realized through the lost foam casting process, the circumferential surface wear resistance of the whole roller sleeve wear-resistant working surface is increased by multiple, and the service life is prolonged to at least 12 months from original 3 months through calculation;
(2) According to the lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve, the metal ceramic strips which are uniformly distributed in an array mode play a certain cutting role in the grinding roller sleeve rotating/40785 and powder process, the grain size range of fed materials can be effectively enlarged, the prepared powder is more uniform, and the production efficiency is effectively improved.
Drawings
FIG. 1 is a schematic view of a composite roll cover structure according to an embodiment;
FIG. 2 is a cross-sectional view taken along the A-A plane of FIG. 1;
FIG. 3 is a schematic diagram of a cermet strip structure according to an exemplary embodiment.
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic view of a lost foam matrix structure according to an embodiment;
FIG. 6 is a side view of FIG. 5;
fig. 7 is an overall shape of an assembled grinding roll of an embodiment (with the cermet strip structure omitted).
In the figure: 1. a lost foam matrix; 2. a metal ceramic strip; 10. high chromium wear-resistant alloy roller sleeve; 11. a groove strip; 12. protruding ribs; 21. a bending head; 22. a bump; 23. square straight bars; 101. a wear resistant working surface; 102. a fixing surface; 121. and a side groove.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings.
Example 1
In the present embodiment, as shown in fig. 1, 2 and 7, a composite roller sleeve of high-chromium wear-resistant alloy and metal ceramic strip is formed by splicing a plurality of arc-shaped, also called fan-shaped, high-chromium wear-resistant alloy roller sleeves 10 sequentially through their side surfaces to form a round roller sleeve whole, the whole can be in a round drum shape with the side surfaces being arc-shaped, the outer arc surface of the high-chromium wear-resistant alloy roller sleeve 10 is a wear-resistant working surface 101, and a plurality of vertical metal ceramic strips 2 made of metal ceramic are inlaid on the wear-resistant working surface 101 at intervals through the lost foam casting process. The metal ceramic has the advantages of metal and ceramic, and has the advantages of small density, high hardness, wear resistance and good thermal conductivity, and cannot be embrittled due to quenching or sudden heating.
The lost foam casting process of the composite roller sleeve of the embodiment is the existing traditional process, and is not repeated here, the characteristics of convenient negative pressure casting of lost foam casting are fully utilized, the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strip 2 can be cast at one time and integrally formed, seamless firm connection is achieved, the using amount of the metal ceramic strip 2 can be considered according to the wear resistance and the manufacturing cost, 22 strips are arranged in the embodiment, the vertical metal ceramic strips 2 are uniformly distributed in an array mode, and the metal ceramic strips 2 have the characteristics of toughness, high heat conductivity, good thermal stability, high temperature resistance, corrosion resistance, wear resistance and the like of metal, and the high wear resistance of the high-chromium wear-resistant alloy roller sleeve 10 is combined, so that the wear resistance of the peripheral surface of the whole roller sleeve wear-resistant working surface 101 is increased in multiple mode, and the whole service life of the whole round roller sleeve is prolonged.
Example 2
The composite roller sleeve for lost foam casting of high-chromium wear-resistant alloy and metal ceramic strips in the embodiment has the same basic structure as that in the embodiment 1, and is different from or improved in that: as shown in fig. 3 and 4, the metal ceramic strip 2 includes a bending head 21 at the head portion thereof, which is adapted to the arc surface of the wear-resistant working surface 101, and when the wear-resistant working surface 101 is worn to a certain extent, the bending head 21 can hook the roller side in the grinding process, so that the whole metal ceramic strip 2 can be tightly pulled on the wear-resistant working surface 101, and the connection strength of the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strip 2 is improved. As shown in fig. 3, the metal ceramic strip 2 extends to the side surface thereof with the protruding blocks 22 arranged at intervals, the protruding blocks 22 are distributed in a lattice mode on the whole wear-resistant working surface 101 and cooperate with the metal ceramic strip 2 in a vertical array mode, so that the connection strength of the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strip 2 is further improved, the uniformity of the wear resistance distribution of the whole wear-resistant working surface 101 is improved, and the influence of local wear on the service life of the high-chromium wear-resistant alloy roller sleeve is effectively avoided.
Example 3
The composite roller sleeve for lost foam casting of high-chromium wear-resistant alloy and metal ceramic strips in the embodiment has the same basic structure as that in the embodiment 2, and is different from or improved in that: the metal ceramic strip 2 is divided into a bending head 21 and a square straight strip 23, so that two independent different monomers can be respectively processed, packaged and transported, and the lost foam can be independently embedded in the lost foam casting process, and the metal ceramic strip is convenient to operate, high in efficiency and low in cost.
Example 4
The composite roller sleeve for lost foam casting of high-chromium wear-resistant alloy and metal ceramic strips in the embodiment has the same basic structure as that in the embodiment 3, and is different from or improved in that: the high-chromium wear-resistant alloy roller sleeve 10 is formed by casting a lost foam substrate 1 which is matched with the high-chromium wear-resistant alloy roller sleeve 10 through a lost foam casting process, wherein the lost foam substrate 1 is made of polystyrene foam; as shown in fig. 5 and 6, groove strips 11 which are matched with the metal ceramic strips 2 and are distributed at intervals are reserved on the outer cambered surface of the lost foam substrate 1, protruding ribs 12 are formed between the groove strips 11, the groove strips 11 and the protruding ribs 12 are staggered and are distributed uniformly in a vertical array mode, the manufacturing material of the lost foam substrate 1 is generally foaming material, certain elasticity is achieved, the metal ceramic strips 2 can be conveniently embedded into the lost foam substrate, in addition, the width of the metal ceramic strips 2 can be slightly larger than that of the groove strips 11, when the metal ceramic strips 2 are embedded into the lost foam substrate, the groove strips 11 are connected in a close-fitting mode, and after lost foam casting is finished, the connection strength of the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strips 2 can be further improved. The convex ribs 12 are reserved with the edge grooves 121 of the adaptive convex blocks 22, and are matched with the convex blocks 22 distributed in a dot matrix mode, the edge length of the convex blocks 22 can be slightly larger than that of the edge grooves 121, so that tight fit connection of the convex ribs and the edge grooves is realized during embedding, and the embedded connection strength of the convex ribs and the edge grooves is improved.
The manufacturing method of the composite roller sleeve comprises the following steps:
1. the metal ceramic strip 2 is pressed into the groove strip 11 and the side groove 121 of the lost foam base 1 in an adapting mode, and when the metal ceramic strip 2 is divided into a bending head 21 and a square straight strip 23, the metal ceramic strip 2 is pressed into the groove strip 11 and the side groove 121 in an adapting mode respectively; the metal ceramic strip 2 can be selected from the existing titanium carbonitride-based metal ceramic strip;
2. the high-chromium wear-resistant alloy material is melted into molten metal at high temperature, and the chemical components of the molten metal are Mo:9%, cr:9.0%, ti 3.0%, C:2.8%, V2.0%, nb 1.0%, mn:0.5 percent of Si, 0.5 percent of Fe and the balance of unavoidable impurities, and the high-chromium wear-resistant alloy material can also use the wear-resistant alloy material in the prior art; the step can be exchanged with the step one;
3. then burying the lost foam substrate 1 into a sand box and sealing the sand box, then carrying out vacuum treatment on the sand box by utilizing a vacuum system connected with the sand box, wherein the pressure is 0.07MPa, the time is 25 minutes, the vacuum treatment aims at facilitating rapid flushing of molten metal and rapid disappearance of the lost foam substrate 1, then pouring molten metal in the second step into a pouring system connected with the lost foam substrate 1, the pouring temperature is 1385 ℃, the speed is 0.45m/s, the lost foam substrate 1 disappears along with inflow of the molten metal, and the melting point of a metal ceramic strip 2 pressed in the lost foam substrate 1 is far greater than 1385 ℃ and cannot be melted and disappeared; because the space formed by the disappearance of the vanishing mould matrix 1 is replaced by molten metal, that is, the vanishing mould matrix 10 is replaced by molten metal to generate the high-chromium wear-resistant alloy roller sleeve 10 after the disappearance, the metal ceramic strip 2 is embedded into the high-chromium wear-resistant alloy roller sleeve 10 in situ, and the vacuum system is still kept in an open state in the whole casting process and at least for 20 minutes after the casting so as to facilitate timely gas discharge;
4. and (3) removing the sand box after cooling, taking out the casting, and carrying out grinding and heat treatment on the casting to obtain the lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve.
The composite roller sleeve prepared by the method has the hardness of 1400HV of the metal ceramic strip 2, the average hardness of the wear-resistant working surface 101 of 1080HV, the hardness of the high-chromium wear-resistant alloy roller sleeve 10 in the casting area of 980HV, and the impact toughness of the composite roller sleeve of 8J/mm according to the detection of the relevant detection standard 2 The wear-resistant alloy roller sleeve has better wear resistance, the metal ceramic strips 2 and the lattice-type distributed lugs 22 are uniformly distributed on the vertical array type wear-resistant working surface 101 of the high-chromium wear-resistant alloy roller sleeve, the synergistic interaction of the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strips 2 is effectively improved, the connection relationship between the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strips 2 is realized through the lost foam casting process, the peripheral surface wear resistance of the whole roller sleeve wear-resistant working surface 101 is increased by multiple, and the service life is prolonged to at least 12 months from the original 3 months through measurement and calculation, so that the wear resistance is improved by more than four times. In addition, after the grinding roller sleeve is sleeved on the roller shaft through the fixing surface 102 of the grinding roller sleeve, the metal ceramic strips 2 also play a certain role in cutting in the process of rotating 40785 powder, the grain size range of the fed materials can be effectively enlarged, the prepared powder is more uniform, and the production efficiency of grinding is also improved.
Example 5
The composite roller sleeve for lost foam casting of high-chromium wear-resistant alloy and metal ceramic strips in the embodiment has the same basic structure as that in the embodiment 4, and is different from or improved in that: the radian of the high-chromium wear-resistant alloy roller sleeve 10 and the lost foam substrate 1 is 45 degrees, and after 8 roller sleeve monomers are connected end to end, an integral roller sleeve grinding roller is formed, the radian is overlarge, the weight of the monomers is overlarge, the packaging or the transportation is inconvenient, and the radian is too small, so that the connection strength between the monomers is affected. Before lost foam casting, the difference between the depth M of the groove strip 11 and the thickness N of the metal ceramic strip 2 is M-N not less than 1.0-1.7 mm, after lost foam casting, the prepared high-chromium wear-resistant alloy roller sleeve 10 can fully cover the connecting gap between the high-chromium wear-resistant alloy roller sleeve 10 and the metal ceramic strip 2, an integrated structure of seamless connection is realized, and the connecting strength of the high-chromium wear-resistant alloy roller sleeve and the metal ceramic strip is further improved.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (8)
1. A lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve is formed by splicing a plurality of arc-shaped high-chromium wear-resistant alloy roller sleeves (10) into a round roller sleeve whole in sequence in a side-face manner, and is characterized in that: the outer cambered surface of the high-chromium wear-resistant alloy roller sleeve (10) is a wear-resistant working surface (101), and a plurality of metal ceramic strips (2) distributed in vertical array are inlaid on the wear-resistant working surface (101) at intervals through an lost foam casting method.
2. The lost foam casting high chromium wear resistant alloy and cermet strip composite roll housing of claim 1, wherein: the cermet strip (2) comprises a curved head (21) at its head.
3. The lost foam casting high chromium wear resistant alloy and cermet strip composite roll housing of claim 1, wherein: the metal ceramic strip (2) extends to the side surface of the metal ceramic strip to form convex blocks (22) which are arranged at intervals.
4. The lost foam casting high chromium wear resistant alloy and cermet strip composite roll housing of claim 1, wherein: the metal ceramic strip (2) is divided into a bending head (21) and a square straight strip (23).
5. A lost foam cast high chromium wear resistant alloy and cermet strip composite roll housing as defined in any one of claims 1-4, wherein: the high-chromium wear-resistant alloy roller sleeve (10) is formed by casting through a lost foam casting process by using a lost foam matrix (1) which is matched with the high-chromium wear-resistant alloy roller sleeve (10); groove strips (11) which are matched with the metal ceramic strips (2) and are distributed at intervals are reserved on the outer cambered surface of the lost foam substrate (1), and protruding ribs (12) are formed between the groove strips (11).
6. The lost foam casting high chromium wear resistant alloy and cermet strip composite roll housing of claim 5, wherein: the ribs (12) leave a side groove (121) of the adapter cam (22).
7. The lost foam casting high chromium wear resistant alloy and cermet strip composite roll housing of claim 5, wherein: the radian of the high-chromium wear-resistant alloy roller sleeve (10) and the radian of the lost foam substrate (1) are 45 degrees.
8. The lost foam casting high chromium wear resistant alloy and cermet strip composite roll housing of claim 5, wherein: before lost foam casting, the difference between the depth M of the groove strip (11) and the thickness N of the metal ceramic strip (2) is M-N more than or equal to 1.0-1.7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410005587.9A CN117563716A (en) | 2024-01-02 | 2024-01-02 | Lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410005587.9A CN117563716A (en) | 2024-01-02 | 2024-01-02 | Lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN117563716A true CN117563716A (en) | 2024-02-20 |
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|---|---|---|---|
| CN202410005587.9A Pending CN117563716A (en) | 2024-01-02 | 2024-01-02 | Lost foam casting high-chromium wear-resistant alloy and metal ceramic strip composite roller sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118719229A (en) * | 2024-09-02 | 2024-10-01 | 中信重工机械股份有限公司 | A roller press grinding roller and preparation method thereof |
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- 2024-01-02 CN CN202410005587.9A patent/CN117563716A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118719229A (en) * | 2024-09-02 | 2024-10-01 | 中信重工机械股份有限公司 | A roller press grinding roller and preparation method thereof |
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