CN115679189A - Wear-resistant material for dynamic cone, dynamic cone and preparation method of dynamic cone - Google Patents
Wear-resistant material for dynamic cone, dynamic cone and preparation method of dynamic cone Download PDFInfo
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Abstract
The invention belongs to the technical field of crushers and discloses a wear-resistant material for a dynamic cone, the dynamic cone and a preparation method of the dynamic cone, wherein the main preparation raw materials of the dynamic cone material comprise the following components in percentage by mass: 2.8 to 3.8 percent of carbon, 0.2 to 0.5 percent of silicon, 1.2 to 1.8 percent of manganese, 0.001 to 0.05 percent of sulfur, 0.001 to 0.05 percent of phosphorus, 1.2 to 1.8 percent of chromium, 0.4 to 0.7 percent of nitrogen, 1.2 to 1.8 percent of copper, 3.4 to 4.0 percent of nickel, 0.5 to 0.7 percent of molybdenum, 0.5 to 1.2 percent of vanadium and the balance of iron; and the movable cone comprises a movable cone base body and a movable cone inner wall which is integrally formed on the movable cone base body. The movable cone provided by the invention has the advantages of simple structure, controllable cost, long service life and the like, and can be widely applied to various crushers.
Description
Technical Field
The invention relates to the technical field of crushers, in particular to a wear-resistant material for a movable cone, the movable cone and a preparation method of the movable cone.
Background
The cone crusher can be widely applied to the industrial fields of black, non-ferrous and non-metallic mines, sand and stone materials and the like, and the cone crusher crushes rocks by means of friction between the movable cone and the crushing wall. The dynamic cone needs to bear the impact and abrasion of rocks, so that the inner side of the dynamic cone body is required to have high strength and impact resistance, and the surface of the dynamic cone body also needs to have high hardness and wear resistance.
At present, the materials of the movable cone body are generally selected from cast steel, high manganese steel, high chromium cast iron and the like, and after the movable cone body is machined, the working surface needs to be subjected to heat treatment so as to increase the wear resistance of the working surface of the movable cone body. However, the working surface of the moving cone directly manufactured as a whole or subjected to a certain heat treatment process for integral or local reinforcement has poor wear resistance and impact resistance, so that the moving cone often fails due to premature wear, and the maneuverability of the cone crusher is further damaged.
Therefore, the invention provides a wear-resistant material for a dynamic cone, the dynamic cone and a preparation method of the dynamic cone.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a wear-resistant material for a dynamic cone, the dynamic cone and a preparation method of the dynamic cone.
The invention relates to a wear-resistant material for preparing a dynamic cone, the dynamic cone and a preparation method of the dynamic cone, which are realized by the following technical scheme:
the invention aims to provide a wear-resistant material for preparing a dynamic cone, which mainly comprises the following raw materials in percentage by mass:
2.8 to 3.8 percent of carbon, 0.2 to 0.5 percent of silicon, 1.2 to 1.8 percent of manganese, 0.001 to 0.05 percent of sulfur, 0.001 to 0.05 percent of phosphorus, 1.2 to 1.8 percent of chromium, 0.4 to 0.7 percent of nitrogen, 1.2 to 1.8 percent of copper, 3.4 to 4.0 percent of nickel, 0.5 to 0.7 percent of molybdenum, 0.5 to 1.2 percent of vanadium and the balance of iron.
The second purpose of the invention is to provide a movable cone of a cone crusher, which comprises a movable cone base body in transmission connection with a rotation driving device of the cone crusher and a movable cone inner wall integrally formed on the movable cone base body;
the inner wall of the movable cone is made of the wear-resistant material.
Furthermore, the movable cone matrix is made of metal materials with excellent toughness.
Further, the metal material is low-carbon steel or silicon-manganese steel.
Furthermore, the thickness of the inner wall of the movable cone body is 5-7 mm.
The third purpose of the invention is to provide a preparation method of the movable cone, which comprises the following steps:
step 1, smelting the wear-resistant material for preparing the moving cone into a wear-resistant material casting liquid, and casting the wear-resistant material casting liquid into a moving cone inner wall casting mold with a moving cone base body built in, so that the wear-resistant material casting liquid forms a moving cone inner wall casting on the radially inner circumferential surface of the moving cone base body, and thus obtaining a moving cone casting;
and 2, cooling the moving cone casting to 850-880 ℃ in a mould, taking out the moving cone casting, air-cooling to 350-320 ℃, then preserving the heat in a heat preservation furnace for 8-10 hours, taking out the moving cone casting, and air-cooling to room temperature to obtain the moving cone.
Further, in the step 1, the casting temperature of the casting liquid of the wear-resistant material is 1450-1480 ℃.
Further, in the step 1, the movable cone matrix casting is prepared by adopting a lost foam casting process.
Further, in the step 1, the movable cone inner wall casting is prepared by adopting a lost foam casting process.
Compared with the prior art, the invention has the following beneficial effects:
the inner wall of the movable cone is made of a wear-resistant material (the preparation raw materials of the wear-resistant material comprise, by mass, 2.8-3.8% of carbon, 0.2-0.5% of silicon, 1.2-1.8% of manganese, 0.001-0.05% of sulfur, 0.001-0.05% of phosphorus, 1.2-1.8% of chromium, 0.4-0.7% of nitrogen, 1.2-1.8% of copper, 3.4-4.0% of nickel, 0.5-0.7% of molybdenum, 0.5-1.2% of vanadium and the balance of iron), and the inner wall of the movable cone is made of the material, so that the impact resistance and the wear resistance of the inner wall of the movable cone are improved. The hardness of the inner wall of the prepared movable cone can reach more than 54HRC, the microstructure of the alloy of the inner wall of the movable cone consists of carbide, lower bainite and austenite, the volume fraction of the austenite can reach 30%, and the movable cone has no inner wall peeling phenomenon in the using process.
According to the invention, through carrying out a new structural design on the movable cone, a metal material with excellent toughness is used as a preparation raw material of the cone matrix, the wear-resistant material is used as a preparation raw material of the inner wall of the movable cone, and the wear-resistant material and the preparation raw material are combined, so that the movable cone has good toughness, can block the expansion of cracks, can generate large plastic deformation to absorb impact energy when being impacted, and improves the impact resistance of the material; meanwhile, the wear resistance of the movable cone is improved.
The invention adopts the lost foam casting process, after the wear-resistant material is smelted into the wear-resistant material casting liquid, the wear-resistant material casting liquid is poured on the circumferential surface of the radial inner side of the moving cone matrix casting, so as to form the wear-resistant and impact-resistant moving cone inner wall on the inner side of the moving cone matrix casting, further realize the metallurgical bonding of the moving cone matrix and the moving cone inner wall, and the prepared moving cone has good impact resistance and good wear resistance.
The movable cone provided by the invention has the advantages of simple structure, controllable cost, long service life and the like, and can be widely applied to various crushers.
Drawings
Fig. 1 is a schematic sectional structure view of a movable cone according to a preferred embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a moving cone, which includes a moving cone base 1, and a moving cone inner wall 2 integrated with the moving cone base 1 by casting.
In this embodiment, the inner wall 2 of the moving cone is made of a wear-resistant material, and the main preparation raw materials of the wear-resistant material in this embodiment include the following components by mass percent:
3% of carbon, 0.3% of silicon, 1.5% of manganese, 0.02% of sulfur, 0.02% of phosphorus, 1.5% of chromium, 0.5% of nitrogen, 0.5% of copper, 0.7% of nickel, 0.6% of molybdenum, 0.8% of vanadium and the balance of iron.
In the embodiment, the inner wall thickness of the movable cone body is 6mm, so that the movable cone body has better balance between good impact resistance and good wear resistance, and the performance and the service life of the movable cone body are favorably improved.
In this embodiment, the dynamic cone base body is made of low carbon steel, so that the dynamic cone has sufficient impact resistance.
Example 2
As shown in fig. 1, the present embodiment provides a moving cone, which includes a moving cone base 1, and a moving cone inner wall 2 integrated with the moving cone base 1 by casting.
In this embodiment, the inner wall 2 of the moving cone is made of a wear-resistant material, and the main preparation raw materials of the wear-resistant material in this embodiment include the following components by mass percent:
2.8% of carbon, 0.2% of silicon, 1.2% of manganese, 0.001% of sulfur, 0.001% of phosphorus, 1.2% of chromium, 0.4% of nitrogen, 1.2% of copper, 3.4% of nickel, 0.5% of molybdenum, 0.5% of vanadium and the balance of iron.
In this embodiment, the inner wall thickness of the dynamic cone is 5mm.
In this embodiment, the moving cone substrate is made of silicon-manganese steel.
Example 3
As shown in fig. 1, the present embodiment provides a moving cone, which includes a moving cone base 1, and a moving cone inner wall 2 integrated with the moving cone base 1 by casting.
In this embodiment, the inner wall 2 of the movable cone is made of a wear-resistant material, and the main preparation raw materials of the wear-resistant material of this embodiment include the following components by mass percent:
23.8% of carbon, 0.5% of silicon, 1.8% of manganese, 0.05% of sulfur, 0.05% of phosphorus, 1.8% of chromium, 0.7% of nitrogen, 1.8% of copper, 4.0% of nickel, 0.7% of molybdenum, 1.2% of vanadium and the balance of iron.
In this embodiment, the inner wall thickness of the dynamic cone is 7mm.
In this embodiment, the moving cone base body is made of ZG310-570 steel.
Example 4
The embodiment provides a preparation method of a movable cone, which comprises the following steps:
step 1, preparing a movable cone matrix casting:
1.1 providing a moving cone matrix lost foam model
Preparing a movable cone matrix foamed plastic model with a corresponding size according to the actually required movable cone size requirement, uniformly coating a composite lost foam coating on the surface of the movable cone matrix foamed plastic model, and baking at 50 ℃ for 8-14 hours to obtain the movable cone matrix lost foam model;
it should be noted that the invention does not limit the specific components of the composite lost foam coating, as long as the foam mold can be supported and protected, the casting precision is ensured, and the defects of sand burning, sand holes, air holes, metal penetration, cold shut, no casting, carbon deposition and the like of the casting are reduced or prevented. In this embodiment, a styromol coating dedicated to a lost foam mold from Fosrco MORNAL, uk, may be optionally used as the composite lost foam mold coating.
1.2 provides a casting mould for a moving cone matrix
a. Putting the moving cone matrix lost foam model obtained in the step into a lost foam sand box, and adding quartz sand for vibration molding;
the specific amount of the quartz sand is not limited, and the amount of the quartz sand is flexibly adjusted according to the size of the practical movable cone matrix lost foam model, so that the casting model can be manufactured.
b. Covering and sealing the lost foam sand box with a plastic film, and installing a pouring cup on the lost foam sand box;
the pouring cup is arranged on the lost foam sand box to receive the molten metal from the pouring ladle, so that the molten metal is prevented from splashing or overflowing, pouring is facilitated, direct impact of the molten metal on the casting mould is reduced, partial slag and impurities are skimmed, the molten metal is prevented from entering a straight pouring channel, and the static pressure of the molten metal is improved.
c. Starting the lost foam vacuum system, and vacuumizing an air passage on the lost foam sand box to ensure that quartz sand in the lost foam sand box keeps fastening to obtain a moving cone matrix casting mould;
the invention does not limit the specific model of the lost foam vacuum system, and only needs to provide a stable negative pressure field to shape the quartz sand under the action of atmospheric pressure and suck away gas, dust particles and other foreign matters generated in the gasification process of the foam model in lost foam casting. In this embodiment, the evaporative pattern vacuum system optionally employed is a full mold casting plant of zibo general.
1.3 providing a moving cone matrix casting
In the embodiment, ZG310-570 steel is used as a material of the movable cone matrix, and specifically, a ZG310-570 steel casting solution is poured into a movable cone matrix casting mold at a pouring temperature of 1450-1480 ℃ to obtain a movable cone matrix casting.
2.1 providing a moving cone inner wall lost foam model
Preparing a movable cone inner wall foamed plastic model with a corresponding size according to the actually required movable cone size requirement, uniformly coating a composite lost foam coating on the surface of the movable cone inner wall foamed plastic model except the circumferential surface of the radial outer side, and baking at the temperature of 50 ℃ for 8-14 hours to obtain the movable cone inner wall lost foam model;
the specific components and coating thickness of the composite lost foam coating are not limited, and the composite lost foam coating can support and protect a foam model, ensure the casting precision, and reduce or prevent the defects of sand sticking, sand holes, air holes, metal penetration, cold shut, no pouring, carbon deposition and the like of the casting. In the embodiment, a styromol evaporative pattern coating special for a Fosrc MORTAL company in UK can be optionally adopted as the composite evaporative pattern coating, and the coating thickness is 1-2 mm.
2.2 providing a casting mould for the inner wall of the moving cone
a. Taking the movable cone matrix casting obtained in the step 1 as a casting core, and installing a movable cone inner wall lost foam model on the movable cone matrix casting to obtain a double-layer structure assembly body, wherein the movable cone matrix casting and the movable cone inner wall lost foam model are in clearance fit;
b. preheating the double-layer structure assembly body, loading the preheated double-layer structure assembly body into a temperature-controllable lost foam sand box, and adding quartz sand for vibration molding;
it should be noted that the invention is not limited to the specific preheating mode for the assembly body with the double-layer structure, as long as the mold can be protected, the use efficiency of the mold can be improved, and the defects such as casting cracks can be reduced. In this embodiment, an induction coil may be optionally used to preheat the double-layer structure assembly.
c. Covering and sealing the lost foam sand box with a plastic film, and installing a pouring cup on the lost foam sand box;
the pouring cup is arranged on the lost foam sand box to receive the molten metal from the pouring ladle, so that the molten metal is prevented from splashing or overflowing, pouring is facilitated, direct impact of the molten metal on the casting mould is reduced, partial slag and impurities are skimmed, the molten metal is prevented from entering a straight pouring channel, and the static pressure of the molten metal is improved.
d. Starting the lost foam vacuum system, and vacuumizing an air passage on the lost foam sand box to ensure that quartz sand in the lost foam sand box is kept fastened to obtain a casting mold of the inner wall of the movable cone;
the invention does not limit the specific model of the lost foam vacuum system, and only needs to provide a stable negative pressure field, so that the quartz sand is shaped under the action of atmospheric pressure, and foreign matters such as gas, dust particles and the like generated in the gasification process of the foam model in lost foam casting are sucked away. In this embodiment, the evaporative mold vacuum system optionally employed is a catalpol evaporative mold casting plant.
2.3 providing moving cone castings
The wear-resistant material in the embodiment 1 is used as the material of the inner wall of the movable cone, each preparation raw material of the wear-resistant material is smelted into a casting liquid of the wear-resistant material with the temperature of 1450-1550 ℃, the casting liquid of the wear-resistant material is poured into a casting mould of the inner wall of the movable cone, and the pouring temperature is 1450-1550 ℃ during pouring, so that a movable cone casting is formed on the movable cone base casting.
Step 3, preparing a movable cone:
cooling the moving cone casting to 850 ℃ in a moving cone matrix casting mold; closing the lost foam vacuum system, taking out the moving cone casting mold, air-cooling to 330 ℃, and then putting the moving cone casting mold into a heat preservation furnace for keeping for 8 hours; and then taking out the casting for air cooling to room temperature, and taking out the casting to obtain the finished movable cone.
Example 5
The present embodiment provides a method for preparing a movable cone, and the present embodiment is different from embodiment 4 only in that:
in this example, the wear-resistant material of example 2 was used as a raw material for preparing the inner wall of the dynamic cone.
Example 6
The present embodiment provides a method for preparing a dynamic cone, and the present embodiment is different from embodiment 4 only in that:
in this example, the wear-resistant material of example 3 was used as a raw material for preparing the inner wall of the dynamic cone.
Example 7
The present embodiment provides a method for preparing a dynamic cone, and the present embodiment is different from embodiment 4 only in that:
in the step 3 of the embodiment, the moving cone casting is cooled to 850 ℃ in a moving cone matrix casting mold; closing the lost foam vacuum system, taking out the moving cone casting mold, air-cooling to 320 ℃, and then putting the moving cone casting mold into a heat preservation furnace for keeping for 8 hours; and then taking out the casting for air cooling to room temperature, and taking out the casting to obtain the finished movable cone.
Example 8
The present embodiment provides a method for preparing a dynamic cone, and the present embodiment is different from embodiment 4 only in that:
in step 3 of this embodiment, the moving cone casting is cooled to 865 ℃ in a moving cone matrix casting mold; closing the lost foam vacuum system, taking out the moving cone casting mold, air-cooling to 340 ℃, and then placing the moving cone casting mold into a heat preservation furnace for keeping for 9 hours; and then taking out the casting to be cooled in air to room temperature, and taking out the casting to obtain the finished movable cone.
Example 9
The present embodiment provides a method for preparing a dynamic cone, and the present embodiment is different from embodiment 4 only in that:
in step 3 of this embodiment, the moving cone casting is cooled to 880 ℃ in a moving cone matrix casting mold; closing the lost foam vacuum system, taking out the moving cone casting mold, air-cooling to 350 ℃, and then placing the moving cone casting mold into a heat preservation furnace for 10 hours; and then taking out the casting for air cooling to room temperature, and taking out the casting to obtain the finished movable cone.
Test section
According to the test method of GB/T230.1-2018, the Rockwell hardness test is respectively carried out on the inner wall of the moving cone prepared in the embodiments 4-6, and the results are shown in Table 1, and it can be seen that: the Rockwell hardness of the moving cone prepared by the invention is 54-58 HRC, which shows that the moving cone prepared by the invention has good capability of resisting the pressing-in of hard objects, namely good impact resistance.
Table 1 hardness test results
| Example 4 | Example 5 | Example 6 | |
| Rockwell Hardness (HRC) | 58 | 54 | 57 |
According to the test method of GB/T12444-2006, the inner walls of the moving cones prepared in the embodiments 4-6 are respectively subjected to friction performance test, and the results are shown in Table 2.
TABLE 2 Friction Property test results
| Example 4 | Example 5 | Example 6 | |
| Coefficient of friction (Dry Friction) | 0.10 | 0.13 | 0.11 |
In addition, the invention takes the inner wall of the moving cone prepared in the embodiment 4 as an example, and the microstructure of the alloy is analyzed, and the result shows that the microstructure consists of carbide, lower bainite and austenite, and the volume fraction of the austenite is 30%.
In addition, the movable cone prepared in the embodiment 4 is taken as an example, and the movable cone is observed in use for one month, so that the phenomenon that the inner wall of the movable cone is peeled off is found in the use process, and the cone substrate of the movable cone prepared by the invention is tightly combined with the inner wall of the movable cone, and the movable cone is good in friction resistance and impact resistance.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
It is to be understood that the above-described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The wear-resistant material for the dynamic cone is characterized by comprising the following raw materials in percentage by mass:
2.8 to 3.8 percent of carbon, 0.2 to 0.5 percent of silicon, 1.2 to 1.8 percent of manganese, 0.001 to 0.05 percent of sulfur, 0.001 to 0.05 percent of phosphorus, 1.2 to 1.8 percent of chromium, 0.4 to 0.7 percent of nitrogen, 1.2 to 1.8 percent of copper, 3.4 to 4.0 percent of nickel, 0.5 to 0.7 percent of molybdenum, 0.5 to 1.2 percent of vanadium and the balance of iron.
2. A moving cone of a cone crusher made of wear-resistant material for a moving cone according to claim 1, comprising a moving cone base body (1) in transmission connection with a rotary drive of the cone crusher, characterized by further comprising a moving cone inner wall (2) integrally formed on the moving cone base body (1);
the dynamic cone inner wall (2) is made of the wear resistant material of claim 1.
3. The moving cone according to claim 2, characterized in that the moving cone inner wall (2) is formed on the radially inner circumferential surface of the moving cone base body (1) by a lost foam casting process.
4. The dynamic cone according to claim 2, characterized in that the material of the dynamic cone base body (1) is a metal material with excellent toughness.
5. A movable cone according to claim 4, wherein the metallic material is low carbon steel or silicomanganese steel.
6. The mobile cone according to claim 2, characterized in that the thickness of the mobile cone inner wall (2) is 5 to 7mm.
7. A method for preparing a movable cone according to any one of claims 2-6, characterized in that it comprises the following steps:
step 1, smelting the wear-resistant material for the moving cone body preparation according to claim 1 into a casting liquid of the wear-resistant material, and pouring the casting liquid into a casting mold for the inner wall of the moving cone body with a moving cone base casting built therein, so that the casting liquid of the wear-resistant material forms a casting for the inner wall of the moving cone body on the circumferential surface of the radial inner side of the moving cone base casting, and thus obtaining the moving cone casting;
and 2, cooling the moving cone casting to 850-880 ℃ in a mould, taking out the moving cone casting, air-cooling to 320-350 ℃, then preserving the heat in a heat preservation furnace for 8-10 hours, taking out the moving cone casting, and air-cooling to room temperature to obtain the moving cone.
8. The method according to claim 7, wherein the casting temperature of the casting liquid of the wear-resistant material in step 1 is 1450 to 1480 ℃.
9. The method according to claim 7, wherein in step 1, the movable cone base casting is prepared by a lost foam casting process.
10. The method for preparing according to claim 7, characterized in that, in step 1, the casting of the inner wall (2) of the dynamic cone is prepared by a lost foam casting process.
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| CN202211096425.8A CN115679189A (en) | 2022-09-08 | 2022-09-08 | Wear-resistant material for dynamic cone, dynamic cone and preparation method of dynamic cone |
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Citations (4)
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| CN1176315A (en) * | 1996-07-25 | 1998-03-18 | Ae格策有限公司 | Iron casting alloy for producing piston ring of internal-combustion engine |
| CN101092674A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
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| CN109295382A (en) * | 2018-10-22 | 2019-02-01 | 河南科技大学 | A kind of high nitrogen antifriction anticorrosion alloy and preparation method thereof |
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2022
- 2022-09-08 CN CN202211096425.8A patent/CN115679189A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176315A (en) * | 1996-07-25 | 1998-03-18 | Ae格策有限公司 | Iron casting alloy for producing piston ring of internal-combustion engine |
| CN101092674A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| CN205886985U (en) * | 2016-06-16 | 2017-01-18 | 杭州龙云水利机械制造有限公司 | Cone crusher's mantle device |
| CN109295382A (en) * | 2018-10-22 | 2019-02-01 | 河南科技大学 | A kind of high nitrogen antifriction anticorrosion alloy and preparation method thereof |
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| 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会: "中华人民共和国国家标准 抗磨白口铸铁件", vol. 8263, 机械工业出版社, pages: 392 - 619 * |
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