Titanium alloy, saw blade for orthopedics department and preparation method of saw blade

Abstract

The invention belongs to the technical field of precision casting titanium alloy application, and particularly discloses a titanium alloy which comprises the following chemical components in percentage by mass: less than or equal to 0.30% of Fe, less than or equal to 0.10% of C, less than or equal to 0.05% of N, less than or equal to 0.015% of H, less than or equal to 0.20% of O, 5.5-6.75% of Al, 3.5-4.5% of V and the balance of Ti. The saw blade for the orthopedics department has the advantages that the tensile strength is larger than or equal to 895 MPa, the residual elongation stress is larger than or equal to 825 MPa, the elongation is larger than or equal to 10, the percentage reduction of area is larger than or equal to 25, meanwhile, the density is 4.5 g / cm < 3 >, the working temperature is-100-500 DEG C, and the saw blade is durable and long in service life; and 2, a robot is combined with a membrane shell pouring mode in the preparation process, so that the quality of the manufactured saw blade is greatly ensured, the reject ratio is reduced, meanwhile, operations such as cutting, tempering and grinding do not need to be performed for many times, and the problem that impurities such as hydrogen, oxygen, nitrogen and carbon are very easy to absorb in hot working is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the application of precision casting titanium alloys, and particularly relates to a titanium alloy, a saw blade for orthopedics and a preparation method thereof. Background Art

[0002] Titanium alloy refers to a variety of alloy metals made of titanium and other metals. Titanium is an important structural metal developed in the 1950s. Titanium alloys have high strength, good corrosion resistance, high heat resistance, and also have the characteristics of high strength and low density, good mechanical properties, strong toughness and corrosion resistance.

[0003] Currently, titanium alloys have poor processability and are difficult to machine. During hot processing, they are very easy to absorb impurities such as hydrogen, oxygen, nitrogen, and carbon, and also have the disadvantages of poor wear resistance and complex production processes.

[0004] The saw blade dedicated to cutting titanium alloy is a tool specifically used for cutting titanium alloy materials. At the same time, due to the characteristics of titanium alloy such as high strength, high corrosion resistance and good low-temperature performance, when the hardness of titanium alloy is greater than HB350, cutting is particularly difficult, and when it is less than HB300, the phenomenon of sticking to the tool is likely to occur, and it is also difficult to cut.

[0005] Regarding the saw blade for orthopedics, how to design and develop a saw blade with good mechanical properties, enhanced toughness and corrosion resistance and easy to produce and process is an urgent problem to be solved at present.

[0006] Therefore, based on the above problems, the present invention provides a titanium alloy, a saw blade for orthopedics and a preparation method thereof. Summary of the Invention

[0007] Object of the Invention: The object of the present invention is to provide a titanium alloy, a saw blade for orthopedics and a preparation method thereof, so as to solve the problems existing in current titanium alloys and saw blades for orthopedics made of titanium alloys in the background art.

[0008] Technical Solution: In the first aspect of the present invention, a titanium alloy is provided. By mass percentage, it includes the following chemical components: Fe: ≤0.30, C: ≤0.10, N: ≤0.05, H: ≤0.015, O: ≤0.20, Al: 5.5 - 6.75, V: 3.5 - 4.5, and the balance is Ti.

[0009] In this technical solution, a titanium alloy, by mass percentage, includes the following chemical components: Fe: ≤0.30, C: ≤0.10, N: ≤0.05, H: ≤0.015, O: ≤0.20, Al: 5.44, V: 4.5, and the balance is Ti.

[0010] In the second aspect of the present invention, a saw blade for orthopedics is provided, which is prepared by using the titanium alloy described in the present invention.

[0011] The third aspect of the present invention provides a method for preparing a saw blade for orthopedics, including the following steps: Step 1, hang the manufactured saw blade mold shells on the circulating suspension line respectively; Step 2, use a robot to grab and unload the saw blade mold shells on the circulating suspension line; Step 3, use a robot to move the grabbed and unloaded saw blade mold shells and immerse them in a slurry dipping bucket for slurry dipping treatment; Step 4, use a robot to lift the saw blade mold shells after slurry dipping and control the corresponding angle for slurry control treatment; Step 5, use a robot to move the saw blade mold shells after slurry control to a sand spraying machine for sand spraying treatment; Step 6, use a robot to hang the saw blade mold shells after sand spraying treatment on a rotary drying chain; Step 7, use a robot to move the saw blade mold shells on the drying chain to the pouring port of a titanium alloy solution pouring device and pour; Step 8, use a robot to clamp the saw blade mold shells after titanium alloy solution pouring to a cooling device for cooling; Step 9, open the mold of the saw blade mold shell to remove sand; Step 10, grind, clean, and detect the titanium alloy saw blade castings.

[0012] Compared with the prior art, the beneficial effects of a titanium alloy, a saw blade for orthopedics and its preparation method of the present invention are as follows: 1. The saw blade for orthopedics prepared by the present invention has a tensile strength ≥ 895 MPa, a residual elongation stress ≥ 825 MPa, an elongation rate ≥ 10, a reduction of area ≥ 25, and at the same time, the density is 4.5 g per cubic centimeter, the working temperature is -100 - 500 degrees Celsius, and it is durable and has a long service life; 2. The preparation process adopts a robot combined with a membrane shell pouring method, which greatly guarantees the quality of the manufactured saw blades, reduces the defective rate, and at the same time, there is no need to perform operations such as cutting, tempering, and grinding multiple times, solving the problem that it is very easy to absorb impurities such as hydrogen, oxygen, nitrogen, and carbon in hot processing. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of the robot of the present invention hanging a saw blade mold on a circulating suspension line;

[0015] Figure 2 It is a partially enlarged schematic diagram of the robot of the present invention hanging a saw blade mold on a circulating suspension line. Detailed Embodiments

[0016] The technical solutions 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "top", "bottom", "one side"

[0018] "the other side", "front", "rear", "middle part", "inside", "top end", "

[0019] "bottom end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; in addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Embodiment 1

[0021] A titanium alloy, by mass percentage, includes the following chemical components: Fe: ≤0.30, C: ≤0.10, N: ≤0.05, H: ≤0.015, O: ≤0.20, Al: 5.5 - 6.75, V: 3.5 - 4.5, and the balance is Ti.

[0022] Embodiment 2

[0023] A titanium alloy, by mass percentage, includes the following chemical components: Fe: ≤0.30, C: ≤0.10, N: ≤0.05, H: ≤0.015, O: ≤0.20, Al: 5.44, V: 4.5, and the balance is Ti.

[0024] Embodiment 3

[0025] A saw blade for orthopedics of the present invention is prepared from the titanium alloy of Embodiment 1 or Embodiment 2.

[0026] Embodiment 4

[0027] As Figure 1 and Figure 2 shown, a preparation method of a saw blade for orthopedics includes the following steps:

[0028] Step 1: Hang the manufactured saw blade die casings on the circulating suspension line respectively;

[0029] Step 2: Use a robot to grab and unload the saw blade die casings on the circulating suspension line;

[0030] Step 3: Use a robot to move the grabbed and unloaded saw blade die casings and immerse them in a slurry dipping bucket for slurry dipping treatment;

[0031] Step 4: Use a robot to lift the saw blade die casings after slurry dipping and control the corresponding angle for slurry control treatment;

[0032] Step 5: Use a robot to move the saw blade die casings after slurry control to a sand spraying machine for sand spraying treatment;

[0033] Step 6: Use a robot to hang the saw blade die casings after sand spraying treatment on a rotary drying chain;

[0034] Step 7: Use a robot to move the saw blade die casings on the drying chain to the pouring port of a titanium alloy solution pouring device and pour;

[0035] Step 8: Use a robot to clamp the saw blade die casings after titanium alloy solution pouring to a cooling device for cooling;

[0036] Step 9: Open the mold and remove the sand from the saw blade die casing. Step 10: Grind, clean, and inspect the titanium alloy saw blade casting.

[0037] It should be noted that in this article, terms such as "including", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A titanium alloy, characterized in that: Calculated in mass percentage, it includes the following chemical components: Fe: ≤0.30, C: ≤0.10, N: ≤0.05, H: ≤0.015, O: ≤0.20, Al: 5.5-6.75, V: 3.5-4.5, and the balance is Ti.

2. The titanium alloy according to claim 1, characterized in that Calculated in mass percentage, the chemical components include: Fe: ≤0.30, C: ≤0.10, N: ≤0.05, H: ≤0.015, O: ≤0.20, Al: 5.44, V: 4.5, and the balance is Ti.

3. An orthopedic saw blade, characterized in that: The titanium alloy is prepared according to claim 1 or claim 2.

4. A method for preparing an orthopedic saw blade according to claim 3, characterized in that: The following steps are included: Step 1, hang the manufactured saw blade mold shells on the circulating hanging line respectively; Step 2: Use a robot to grab and remove the saw blade mold shell on the circulating suspension line; Step 3: Use a robot to move the unloaded saw blade mold shell and immerse it in a slurry dipping bucket for slurry dipping; Step 4: Use the robot to grab the saw blade mold shell that has been soaked in slurry and lift it, and control the corresponding angle to perform slurry control processing; Step 5: Use a robot to move the saw blade mold shell after slurry control to the sand spraying machine for sand spraying treatment; Step 6: Use a robot to hang the saw blade mold shell after the sand treatment on the rotary drying chain; Step 7: Use a robot to move the saw blade mold on the drying chain to the pouring port of the titanium alloy solution pouring equipment and perform pouring; Step 8: Using a robot to clamp the saw blade mold shell after the titanium alloy solution is cast to a cooling device for cooling; Step 9, saw blade mold shell mold opening and sand removal; Step 10: Grind, clean and inspect the titanium alloy saw blade casting.

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