An inlaid steel-bonded carbide composite wear part and a method of making the same
Patent Information
- Application Number
- CN202611189540.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-06
- Publication Date
- 2026-10-27
AI Technical Summary
[0007]针对上述问题，本发明提供一种镶嵌式钢结硬质合金复合耐磨部件及其制备方法，通过创新的“镶嵌-冶金复合”结构设计，从根本上解决耐磨层与基体结合强度低、易脱落的技术难题，实现耐磨性与韧性的最优匹配，从而显著延长板锤、磨辊等关键易损件的服役寿命
[0026]1、极致耐磨，寿命倍增：本发明耐磨复合部件的工作面采用超高硬度的钢结硬质合金（HRC 63-70）作为耐磨增强块，其耐磨性是高铬铸铁的3-5倍，为ZTA陶瓷复合材料的1.5-2.5倍，大幅降低了磨损率，延长了使用寿命，减少了停机时间，提高了设备作业率。
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Abstract
Description
Technical Field
[0001] This invention relates to the field of crushing and grinding equipment technology, specifically to an embedded steel-bonded hard alloy composite wear-resistant component and its preparation method. Background Technology
[0002] In crushing and grinding operations in industries such as mining, cement, and construction waste treatment, hammers and grinding rollers are core components that withstand material impact and wear. Their service life directly determines the equipment's operating efficiency, maintenance costs, and operational continuity. Currently, mainstream wear-resistant components generally suffer from difficulties in balancing wear resistance and toughness when dealing with complex working conditions, as well as insufficient reliability in the bond between the wear-resistant layer and the substrate.
[0003] Specifically:
[0004] For hammer plates, high-manganese steel hammer plates have insufficient surface work hardening effect under low-to-medium impact conditions (such as sand making), resulting in poor wear resistance. High-chromium cast iron hammer plates (such as the Cr20 series) have high hardness and good initial wear resistance, but the material itself is brittle and lacks toughness, making them prone to fracture failure when crushing construction waste containing reinforcing steel or large pieces of high-hardness materials. ZTA (zirconia toughened alumina) ceramic composite hammer plates have a significant difference in thermal expansion coefficients between the ceramic and steel matrix, resulting in limited interfacial bonding strength. Under strong impact, the ceramic layer is prone to peeling off, and the ceramic is sensitive to thermal shock, resulting in a narrow process window and low yield.
[0005] For grinding roller products, integrally cast high-chromium cast iron grinding rollers also suffer from insufficient toughness, and are prone to cracking or even overall cracking when encountering unbreakable foreign objects; the weld overlay repair of grinding rollers has high residual stress, is easy to peel off, and repeated welding leads to the accumulation of thermal deformation and scrapping; ZTA honeycomb ceramic composite grinding rollers are also limited by the problem of bonding ceramic and metal matrix, and there is a risk that ceramic blocks are easy to fall off.
[0006] In summary, existing technologies struggle to achieve extreme wear resistance in the working layer while maintaining the overall impact toughness of the component. Once the wear-resistant layer is penetrated or detached, the entire component fails, resulting in resource waste and downtime. Therefore, there is an urgent need for a novel composite wear-resistant component that can firmly bond the wear-resistant layer to the tough matrix, simultaneously endowing the component with high wear resistance and high impact toughness. Summary of the Invention
[0007] To address the aforementioned problems, this invention provides an embedded steel-bonded cemented carbide composite wear-resistant component and its preparation method. Through an innovative "embedded-metallurgical composite" structural design, it fundamentally solves the technical problem of low bonding strength and easy detachment between the wear-resistant layer and the substrate, achieving the optimal match between wear resistance and toughness, thereby significantly extending the service life of key wear parts such as hammers and grinding rollers.
[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an embedded steel-bonded cemented carbide composite wear-resistant component, comprising a tough matrix and a wear-resistant reinforcing block composited on the working surface of the tough matrix, wherein the tough matrix is ductile iron; the wear-resistant reinforcing block is a steel-bonded cemented carbide preform, wherein the HRC of the steel-bonded cemented carbide preform is 63-70; the wear-resistant reinforcing block is encapsulated and embedded in the wear working layer area of the tough matrix through an embedded casting process.
[0009] The wear-resistant reinforcing block has a dovetail or trapezoidal cross section perpendicular to the wear direction, and the width of the wear-resistant reinforcing block gradually increases from the side close to the tough matrix towards the working surface to form a mechanical self-locking structure.
[0010] The wear-resistant reinforcing block has several wavy or sawtooth macro-textures on the side that contacts the tough matrix, and semi-circular blind holes are provided between adjacent macro-textures.
[0011] The wear-resistant reinforcing block is embedded in the back of the tough matrix with a pre-formed grid-like or honeycomb-like groove array. At the same time, the molten tough matrix fills the groove array during the casting process and solidifies to form a tenon-and-mortise three-dimensional mechanical interlocking structure.
[0012] The wear-resistant reinforcing block has raised shoulders at both ends along its length, and the shoulders are completely enclosed within the tough matrix.
[0013] The thickness h of the wear-resistant reinforcing block satisfies the relationship between the wear thickness H of the wear working layer region and the wear thickness H: h = (1.2 ~ 1.5)H.
[0014] Preferably, the wear-resistant reinforcing blocks are provided in a plurality of units and are evenly arranged in a rectangular or ring array in the wear working layer region of the tough matrix, and the spacing between two adjacent wear-resistant reinforcing blocks is 8 to 10 mm.
[0015] Preferably, the hard phase of the steel-bonded hard alloy preform is titanium carbide or tungsten carbide, the bonding metal is alloy steel, and it is integrally formed by powder metallurgy sintering process.
[0016] Preferably, the tough matrix is made of QT500-7 or QT600-3 ductile iron.
[0017] The present invention also provides a method for preparing the above-mentioned embedded steel-bonded cemented carbide composite wear-resistant component, specifically including the following steps:
[0018] S1. Precast alloy block: Hard phase powder and binder metal powder are mixed evenly according to the ratio, pressed into shape and sintered at high temperature to prepare a dense steel-bonded hard alloy precast block with a dovetail or trapezoidal cross section. Macroscopic textures, semi-circular blind holes, groove arrays and shoulders are processed or precast at the corresponding positions of the steel-bonded hard alloy precast block.
[0019] S2. Alloy block pretreatment and cavity fixing: According to the preset spacing and array arrangement, the steel-bonded hard alloy precast blocks are fixed in the wear working layer area of the tough matrix sand mold cavity.
[0020] S3. Inlay casting: Melt ductile iron and pour the molten ductile iron into the sand mold cavity with the steel-bonded cemented carbide preform fixed in place to form a casting. The pouring temperature is 1380℃~1420℃, so that the molten ductile iron fills the sand mold cavity and wraps the steel-bonded cemented carbide preform. The high temperature of the molten ductile iron causes the surface layer of the steel-bonded cemented carbide block to melt slightly. After cooling and solidification, a metallurgical bonding layer is formed at the interface between the steel-bonded cemented carbide block and the tough matrix.
[0021] S4. Post-treatment and heat treatment: After the casting is slowly cooled to below 300°C in the sand mold, it is opened and the sand is cleaned and the gating and riser are removed. The casting is subjected to stress-relieving annealing, followed by normalizing and tempering to obtain the finished composite wear-resistant parts.
[0022] Preferably, in step S2, the steel-bonded hard alloy precast block is positioned by either bolt fixing or molding sand support fixing.
[0023] Preferably, the bottom-pouring or side-pouring open gating system is used in the inlay casting molding step S3.
[0024] Preferably, in step S4, the stress-relieving annealing parameters are: heating the casting to 550℃~600℃, holding it at that temperature for 2~4 hours, and then cooling it in the furnace to below 200℃ before removing it from the furnace.
[0025] Compared with the prior art, the present invention has the following beneficial effects:
[0026] 1. Extreme wear resistance and doubled lifespan: The working surface of the wear-resistant composite component of this invention uses ultra-high hardness steel-bonded cemented carbide (HRC 63-70) as wear-resistant reinforcement. Its wear resistance is 3-5 times that of high-chromium cast iron and 1.5-2.5 times that of ZTA ceramic composite material, which greatly reduces the wear rate, extends the service life, reduces downtime, and improves equipment operating rate.
[0027] 2. Reasonable material combination and strong impact resistance: The component adopts a composite structure of "ductile iron matrix + steel-bonded hard alloy inlay block". The tough matrix can effectively absorb and disperse the instantaneous impact energy during operation, fundamentally solving the problem of brittle cracking of the whole high chromium cast iron parts, and also overcoming the defect of ceramic composite materials being prone to spalling failure due to poor toughness, achieving the optimal match between wear resistance and toughness.
[0028] 3. Multiple interlocking mechanisms ensure extremely high bonding strength: Through a quadruple bonding mechanism of "mechanical self-locking (dovetail / trapezoidal cross section) + interface reinforcement (side wall texture, blind hole) + three-dimensional anchoring (back groove) + metallurgical bonding (micro-melting interface)," an exceptionally strong connection is formed between the wear-resistant reinforcement block and the substrate, effectively preventing detachment under extreme impact and wear conditions.
[0029] 4. Stress optimization and high reliability: The multi-layer dovetail / trapezoidal design can effectively convert the interface shear stress into compressive stress; the large rounded corners at each sharp corner avoid stress concentration and significantly reduce the risk of wear-resistant block chipping and interface cracking.
[0030] 5. Mature technology and easy to promote: The preparation process of this invention is simple and controllable, with high tolerance for errors in casting temperature and heat treatment parameters. It is suitable for the production of wear-resistant parts of various specifications such as hammer plates and grinding rollers. No large-scale special equipment needs to be modified. Mass production can be achieved by relying on existing casting production lines. The finished product qualification rate is high, and the industrialization and promotion value is significant. Attached Figure Description
[0031] Figure 1 This is one of the schematic diagrams of the three-dimensional structure of the wear-resistant reinforcing block in this invention;
[0032] Figure 2 This is a front view of the wear-resistant reinforcing block in this invention;
[0033] Figure 3 A schematic diagram of the main view of an embedded steel-bonded cemented carbide composite wear-resistant hammer.
[0034] Figure 4 A schematic top view of an embedded steel-bonded cemented carbide composite wear-resistant hammer.
[0035] Figure 5 for Figure 4 AA diagram;
[0036] Figure 6 A schematic diagram of the three-dimensional structure of an embedded steel-bonded hard alloy composite wear-resistant grinding roller;
[0037] Figure 7 for Figure 6 Overall frame perspective;
[0038] Figure 8 for Figure 7 Enlarged diagram of point B in the middle. Detailed Implementation
[0039] The following will combine Figure 1-8 The present invention will be described in detail below. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0040] An embedded steel-bonded cemented carbide composite wear-resistant component includes a tough matrix and a wear-resistant reinforcing block composited on the working surface of the tough matrix. The tough matrix is ductile iron; the wear-resistant reinforcing block is a steel-bonded cemented carbide preform with a macroscopic hardness of not less than HRC 63 and wear resistance 3-5 times that of traditional high-chromium cast iron, exhibiting excellent wear resistance. The wear-resistant reinforcing block is encapsulated and embedded in the wear working layer area of the tough matrix through an embedded casting process, serving as the wear-resistant main body of the component that directly contacts the material.
[0041] The cross section of the wear-resistant reinforcing block perpendicular to the wear direction is dovetail-shaped or trapezoidal, and the width of the wear-resistant reinforcing block gradually increases from the side close to the tough matrix towards the working surface. By adopting a structural design that is narrow inside and wide outside, a mechanical self-locking structure is formed by utilizing structural characteristics to prevent the wear-resistant reinforcing block from coming out towards the working surface from the source.
[0042] Meanwhile, the wear-resistant reinforcing block is designed with multiple structural reinforcements: the side of the wear-resistant reinforcing block that contacts the tough matrix has several wavy or sawtooth macro-textures to increase the interface bonding area and improve the interface shear resistance; and semi-circular blind holes are opened between adjacent macro-textures to further enhance the mechanical interlocking effect; the back of the wear-resistant reinforcing block embedded in the tough matrix has a pre-fabricated grid-like or honeycomb-like groove array. During the casting process, the molten tough matrix fills the groove array and solidifies to form a tenon-and-mortise three-dimensional mechanical interlocking structure; the wear-resistant reinforcing block has raised shoulders at both ends along its length, and the shoulders are completely wrapped inside the tough matrix, which can effectively resist the axial impact force that may be generated during the working process and prevent the wear-resistant reinforcing block from axial displacement;
[0043] Secondly, the thickness h of the wear-resistant reinforcing block and the wear thickness H of the wear working layer area satisfy the relationship: h = (1.2 ~ 1.5)H, which ensures that even if the working layer of the wear-resistant reinforcing block is continuously worn throughout the entire design life cycle, the remaining structure can still be embedded in the tough matrix by relying on the self-locking structure, preventing the problem of falling off and failure, and always maintaining the protective function.
[0044] Furthermore, the wear-resistant reinforcing blocks are provided in several form and are evenly arranged in a rectangular or ring array in the wear working layer area of the tough matrix, and the distance between two adjacent wear-resistant reinforcing blocks is 8 to 10 mm.
[0045] The hard phase of the steel-bonded hard alloy precast block is titanium carbide or tungsten carbide, and the bonding metal is alloy steel. It is integrally formed by powder metallurgy sintering process; the tough matrix is made of QT500-7 or QT600-3 ductile iron.
[0046] This invention also provides a method for preparing an embedded steel-bonded cemented carbide composite wear-resistant component, specifically including the following steps:
[0047] S1. Precast alloy block: Select titanium carbide or tungsten carbide as the hard phase, and mix the hard phase powder and the binder metal powder in a uniform ratio. After pressing and molding, sinter at high temperature to prepare a dense steel-bonded hard alloy precast block with a dovetail or trapezoidal cross section. Macroscopic textures, semi-circular blind holes, groove arrays and shoulders are processed or precast at the corresponding positions of the steel-bonded hard alloy precast block.
[0048] S2. Alloy block pretreatment and cavity fixing: According to the type of wear-resistant parts, the steel-bonded hard alloy precast blocks are fixed to the wear working layer area of the tough matrix sand mold cavity by bolts or molding sand supports according to the preset spacing and array arrangement, to ensure that all steel-bonded hard alloy precast blocks are stable in position during the casting process.
[0049] S3. Inlay casting: Melt ductile iron and pour the molten ductile iron into the sand mold cavity with the steel-bonded cemented carbide precast block fixed in place to form a casting (this casting is an integral combination of the cast tough matrix and the wear-resistant reinforcing block). Strictly control the pouring temperature to 1380℃~1420℃. Use a bottom-pouring or side-pouring open gating system to make the ductile iron fill the sand mold cavity steadily from bottom to top and wrap the steel-bonded cemented carbide precast block. The high temperature of the ductile iron causes the surface of the steel-bonded cemented carbide block to slightly melt. After cooling and solidification, a strong metallurgical bonding layer is formed at the interface between the steel-bonded cemented carbide block and the tough matrix.
[0050] S4. Post-treatment and heat treatment: After the casting is slowly cooled to below 300°C in the sand mold, it is opened and the sand is cleaned and the gating and riser are removed. The casting is sent to the heat treatment furnace, heated to 550°C-600°C and held for 2-4 hours for stress relief annealing. Then it is cooled to below 200°C in the furnace and taken out. Then it is subjected to normalizing and tempering heat treatment to obtain the finished composite wear-resistant parts.
[0051] Example 1
[0052] Embedded steel-bonded carbide composite wear-resistant hammer, such as Figure 3 , Figure 4 As shown;
[0053] This embodiment prepares a composite wear-resistant hammer plate adapted to an impact crusher for crushing construction waste. The tough matrix is made of QT500-7 ductile iron, and the wear-resistant reinforcing block is a TiC-Cr series steel-bonded hard alloy precast block. The cross-section of the wear-resistant reinforcing block is dovetail-shaped, with serrated patterns and semi-circular blind holes on the sides, a grid-like groove array on the back, and limiting shoulders at both ends. The thickness h of the wear-resistant reinforcing block and the wear thickness H of the wear working layer area, i.e., the total design wear thickness H of the hammer plate, satisfy h=1.3H, and the spacing between adjacent wear-resistant reinforcing blocks is 8mm.
[0054] The specific preparation steps are as follows:
[0055] S1. Precast alloy block: Titanium carbide is used as the hard phase and chromium alloy is used as the binder phase. The powder is mixed evenly and pressed into a dovetail-shaped blank, which is then sintered at high temperature. The measured macroscopic hardness of the steel-bonded hard alloy precast block is HRC 66.
[0056] S2. Cavity fixing: Arrange multiple steel-bonded cemented carbide precast blocks in a preset rectangular array, and use special bolts to fix the steel-bonded cemented carbide precast blocks to the striking surface position of the plate hammer sand mold cavity.
[0057] S3. Casting: Melt QT500-7 ductile iron molten iron, control the casting temperature at 1410℃, and use a bottom pouring system to complete the casting. The molten iron completely encapsulates the steel-bonded hard alloy preform, achieving metallurgical composite.
[0058] S4. Heat treatment: After the casting is slowly cooled to 280°C in the sand mold, it is opened, the sand is cleaned and the gating and riser are cut off. The casting is heated to 580°C and held for 3 hours for stress relief annealing. It is then cooled to below 200°C in the furnace and taken out of the furnace. Subsequently, the casting is subjected to normalizing and tempering strengthening treatment to obtain the finished composite hammer plate.
[0059] Finished product inspection results: Ultrasonic flaw detection showed that the bonding rate between the steel-bonded cemented carbide precast block and the substrate was ≥98%, with no continuous unbonded defects; metallographic observation showed that there was an obvious interdiffusion layer of elements at the interface, with no continuous oxide inclusions or microcracks; the average shear strength of the interface reached 168MPa; actual working condition test showed that the service life of this composite hammer plate was 4.2 times that of the traditional high-chromium cast iron hammer plate.
[0060] Example 2
[0061] Embedded steel-bonded hard alloy composite wear-resistant grinding rollers, such as Figure 6 , Figure 7 As shown;
[0062] This embodiment prepares a vertical cement raw material mill with a grinding roller diameter of Φ2400mm. The tough matrix is made of QT600-3 ductile iron, and the wear-resistant reinforcing blocks are WC-series steel-bonded hard alloy precast blocks. The cross-section of the wear-resistant reinforcing blocks is dovetail-shaped, with serrated patterns and semi-circular blind holes on the sides, a grid-like groove array on the back, and limiting shoulders at both ends. The thickness h of the wear-resistant reinforcing blocks and the wear thickness H of the wear working layer area, i.e., the total design wear thickness H of the grinding roller, satisfy h=1.4H. The wear-resistant reinforcing blocks are arranged in a ring array along the circumference of the grinding roller generatrix, with a spacing of 10mm between adjacent wear-resistant reinforcing blocks.
[0063] The specific preparation steps are as follows:
[0064] S1. Precast alloy block: Tungsten carbide is used as the hard phase and chromium alloy is used as the binder phase. The powder is mixed evenly and pressed into a trapezoidal blank, which is then sintered at high temperature. The measured macroscopic hardness of the steel-bonded hard alloy precast block is HRC 68.
[0065] S2. Cavity fixing: Arrange multiple steel-bonded cemented carbide preforms in a preset annular array, and use mold supports to fix the steel-bonded cemented carbide preforms to the striking surface position of the grinding roller sand mold cavity.
[0066] S3. Casting: Melt QT600-3 ductile iron, control the casting temperature at 1400℃, and use a side-pouring casting system to complete the casting. The molten iron completely encapsulates the steel-bonded hard alloy preform, achieving metallurgical composite.
[0067] S4. Heat treatment: After the casting is slowly cooled to 290°C in the sand mold, it is opened, the sand is cleaned and the gating and riser are removed; the casting is heated to 550°C and held for 2.5 hours for stress relief annealing, and then cooled to below 200°C in the furnace before being taken out of the furnace. Subsequently, the casting is subjected to normalizing and tempering strengthening treatment to obtain the finished composite grinding roller.
[0068] Finished product inspection results: Ultrasonic flaw detection showed that the steel-bonded hard alloy precast block and the substrate interface were well bonded, casting inclusions were removed, and after machining, the alloy blocks on the working surface of the grinding roller were evenly distributed, firm, and without any loosening.
[0069] The technical solutions provided by the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The descriptions of the embodiments above are only for helping to understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. An embedded steel-bonded hard alloy composite wear-resistant component, comprising a tough matrix (1) and a wear-resistant reinforcing block (2) composited on the working surface of the tough matrix, characterized in that: The tough matrix is ductile iron; the wear-resistant reinforcing block is a steel-bonded cemented carbide precast block; the wear-resistant reinforcing block is encapsulated and embedded in the wear working layer area of the tough matrix through an inlay casting process; The cross section (3) of the wear-resistant reinforcing block perpendicular to the wear direction is dovetail-shaped or trapezoidal, and the width of the wear-resistant reinforcing block gradually increases from the side close to the tough matrix towards the working surface to form a mechanical self-locking structure. The wear-resistant reinforcing block has several wavy or sawtooth macro-patterns (4) on the side that contacts the tough matrix, and semi-circular blind holes (5) are provided between adjacent macro-patterns. The wear-resistant reinforcing block is embedded in the back of the tough matrix with a pre-fabricated grid or honeycomb groove array (6). At the same time, the molten tough matrix fills the groove array during the casting process and solidifies to form a tenon-and-mortise three-dimensional mechanical interlocking structure. The wear-resistant reinforcing block has raised shoulders (7) at both ends along its length direction, and the shoulders are completely wrapped inside the tough matrix. The thickness h of the wear-resistant reinforcing block and the wear thickness H of the wear working layer area satisfy the following relationship: h = (1.2 ~ 1.5)H.
2. The embedded steel-bonded cemented carbide composite wear-resistant component according to claim 1, characterized in that: The wear-resistant reinforcing blocks are provided in several form and are evenly arranged in a rectangular or ring array in the wear working layer area of the tough matrix, and the distance between two adjacent wear-resistant reinforcing blocks is 8 to 10 mm.
3. The embedded steel-bonded hard alloy composite wear-resistant component according to claim 1, characterized in that: The hard phase of the steel-bonded hard alloy preform is titanium carbide or tungsten carbide, and the bonding metal is alloy steel. It is integrally formed using powder metallurgy sintering process.
4. The embedded steel-bonded hard alloy composite wear-resistant component according to claim 1, characterized in that: The tough matrix is made of ductile iron of type QT500-7 or QT600-3.
5. A method for preparing an embedded steel-bonded cemented carbide composite wear-resistant component as described in any one of claims 1-4, characterized in that, Specifically, the following steps are included: S1. Precast alloy block: Hard phase powder and binder metal powder are mixed evenly according to the ratio, pressed into shape and sintered at high temperature to prepare a dense steel-bonded hard alloy precast block with a dovetail or trapezoidal cross section. Macroscopic textures, semi-circular blind holes, groove arrays and shoulders are processed or precast at the corresponding positions of the steel-bonded hard alloy precast block. S2. Alloy block pretreatment and cavity fixing: According to the preset spacing and array arrangement, the steel-bonded hard alloy precast blocks are fixed in the wear working layer area of the tough matrix sand mold cavity. S3. Inlay casting: Melt ductile iron and pour the molten ductile iron into the sand mold cavity with the steel-bonded cemented carbide preform fixed in place to form a casting. The pouring temperature is 1380℃~1420℃, so that the molten ductile iron fills the sand mold cavity and wraps the steel-bonded cemented carbide preform. The high temperature of the molten ductile iron causes the surface layer of the steel-bonded cemented carbide block to melt slightly. After cooling and solidification, a metallurgical bonding layer is formed at the interface between the steel-bonded cemented carbide block and the tough matrix. S4. Post-treatment and heat treatment: After the casting is slowly cooled to below 300°C in the sand mold, it is opened and the sand is cleaned and the gating and riser are removed. The casting is subjected to stress-relieving annealing, followed by normalizing and tempering to obtain the finished composite wear-resistant parts.
6. The method for preparing the embedded steel-bonded cemented carbide composite wear-resistant component according to claim 5, characterized in that: In step S2, the steel-structured hard alloy precast block is fixed by bolts or by molding sand supports to complete the cavity positioning.
7. The method for preparing the embedded steel-bonded cemented carbide composite wear-resistant component according to claim 5, characterized in that: In step S3, the inlay casting process employs an open gating system, either bottom-pour or side-pour.
8. The method for preparing the embedded steel-bonded cemented carbide composite wear-resistant component according to claim 5, characterized in that: In step S4, the stress-relief annealing parameters are as follows: heat the casting to 550℃~600℃, hold for 2~4 hours, and then cool it in the furnace to below 200℃ before removing it from the furnace.