阅读说明：本技术 一种复合材料加工方法 (Composite material processing method ) 是由 李扬德 于 2020-07-22 设计创作，主要内容包括：本发明实施例公开了一种复合材料加工方法,用于解决现有的硬质合金由于熔点较高,难以加工为较复杂的结构的技术问题。本发明实施例包括以下步骤：S1、将硬质金属棒或硬质合金棒与非晶合金颗粒置于预设型腔内进行混合,形成混合材料；S2、将上述的混合材料进行加热,并加热至所述非晶合金颗粒的过冷液相区的温度范围；S3、通过施加压力的方式使非晶合金颗粒在半固态状态下流动,带动与其混合的硬质金属棒或硬质合金棒一同变形至预设型腔的形状；S4、对上述混合材料进行冷却,得到复合材料。(The embodiment of the invention discloses a composite material processing method, which is used for solving the technical problem that the existing hard alloy is difficult to process into a complex structure due to high melting point. The embodiment of the invention comprises the following steps: s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material; s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles; s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity; and S4, cooling the mixed material to obtain the composite material.)

1. A method of processing a composite material, comprising:

s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material;

s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles;

s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity;

and S4, cooling the mixed material to obtain the composite material.

2. The method as claimed in claim 1, wherein the heating temperature of the mixed material in step S2 is in the range of 200 ℃ to 600 ℃.

3. The composite material processing method according to claim 1, wherein the diameter of the hard metal rod is in the range of 0.1mm to 10mm, the diameter of the cemented carbide rod is in the range of 0.1mm to 10mm, and the diameter of the amorphous alloy particles is in the range of 1 μm to 10 mm; the volume ratio of the hard metal rod or the hard alloy rod to the amorphous alloy particles ranges from 1:1 to 10: 1.

4. The composite material processing method according to claim 1, wherein the density of the hard metal rod and the cemented carbide rod is more than 8g/cm³The hardness is more than 500 HV.

5. The composite material processing method of claim 1, wherein the hard metal rod comprises one of tungsten, molybdenum, tantalum, nickel, cobalt, niobium;

the hard alloy rod comprises one of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide;

the amorphous alloy particles comprise one of rare earth-based amorphous alloy, copper-based amorphous alloy, zirconium-based amorphous alloy, titanium-based amorphous alloy, nickel-based amorphous alloy and cobalt-based amorphous alloy.

6. The composite material processing method according to claim 1, wherein the step S3 specifically includes:

the method comprises the steps of enabling amorphous alloy particles to flow in a semi-solid state by means of pressure application, driving a hard metal rod or a hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, applying ultrasonic vibration to a forming part of a mixed material in the cavity, wherein the frequency range of ultrasonic is 10kHHz to 100kHz, when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 0.1mm to 5mm, the ultrasonic with the frequency range of 40kHz to 100kHz is used, and when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 5mm to 10mm, the ultrasonic with the frequency range of 10kHz to 50kHz is used.

7. The composite material processing method according to claim 1, wherein the step S3 specifically includes:

enabling the amorphous alloy particles to flow in a semi-solid state by means of applying pressure in a segmented mode, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together;

the first stage pressure is F1 force enabling the amorphous alloy particles to flow in a superplastic state, the time for applying the pressure is T1, the second stage pressure is F2 force applied after the amorphous alloy superplastic state is finished, and the time for applying the pressure is T2, wherein F2 is more than 1.2 XF 1, and T2 is more than 0.3 XT 1.

Technical Field

The invention relates to the technical field of material preparation, in particular to a composite material processing method.

Background

Because the hard metal and the hard alloy have higher hardness and higher melting point, the finished product is generally in a bar or wire form at present, if the hard metal or the hard alloy is required to be processed into a structure with certain shape characteristics, the hard metal or the hard alloy is generally produced by adopting a powder metallurgy method, and the working procedures comprise powder making, compression molding and sintering. The above-mentioned method is complicated, and because the melting point of the hard metal or the hard alloy is high, the hard metal or the hard alloy is difficult to process into a relatively complicated structure, and the hard metal or the hard alloy has high brittleness, and edge breakage is easily caused during CNC processing, so that the feasibility of processing into a complicated shape by a material removing processing method such as CNC is also low.

Therefore, in order to solve the above technical problems, the search for a method for processing a composite material has become an important issue for those skilled in the art.

Disclosure of Invention

The embodiment of the invention discloses a composite material processing method, which is used for solving the technical problem that the existing hard alloy is difficult to process into a complex structure due to high melting point.

The embodiment of the invention provides a composite material processing method, which comprises the following steps:

s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material;

s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles;

s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity;

and S4, cooling the mixed material to obtain the composite material.

Optionally, in step S2, the heating temperature of the mixed material is in a range of 200 ℃ to 600 ℃.

Optionally, the diameter of the hard metal rod ranges from 0.1mm to 10mm, the diameter of the hard alloy rod ranges from 0.1mm to 10mm, and the diameter of the amorphous alloy particles ranges from 1 μm to 10 mm; the volume ratio of the hard metal rod or the hard alloy rod to the amorphous alloy particles ranges from 1:1 to 10: 1.

Optionally, the hard metal rod and the cemented carbide rod have a density greater than 8g/cm³The hardness is more than 500 HV.

Optionally, the hard metal rod comprises one of tungsten, molybdenum, tantalum, nickel, cobalt, niobium;

the hard alloy rod comprises one of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide;

the amorphous alloy particles comprise one of rare earth-based amorphous alloy, copper-based amorphous alloy, zirconium-based amorphous alloy, titanium-based amorphous alloy, nickel-based amorphous alloy and cobalt-based amorphous alloy.

Optionally, the step S3 specifically includes:

the method comprises the steps of enabling amorphous alloy particles to flow in a semi-solid state by means of pressure application, driving a hard metal rod or a hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, applying ultrasonic vibration to a forming part of a mixed material in the cavity, wherein the frequency range of ultrasonic is 10kHHz to 100kHz, when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 0.1mm to 5mm, the ultrasonic with the frequency range of 40kHz to 100kHz is used, and when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 5mm to 10mm, the ultrasonic with the frequency range of 10kHz to 50kHz is used.

Optionally, the step S3 specifically includes:

enabling the amorphous alloy particles to flow in a semi-solid state by means of applying pressure in a segmented mode, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together;

the first stage pressure is F1 force enabling the amorphous alloy particles to flow in a superplastic state, the time for applying the pressure is T1, the second stage pressure is F2 force applied after the amorphous alloy superplastic state is finished, and the time for applying the pressure is T2, wherein F2 is more than 1.2 XF 1, and T2 is more than 0.3 XT 1.

According to the technical scheme, the embodiment of the invention has the following advantages:

the embodiment of the invention provides a composite material processing method, which comprises S1, mixing a hard metal rod or a hard alloy rod with amorphous alloy particles in a preset cavity to form a mixed material; s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles; s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity; and S4, cooling the mixed material to obtain the composite material. In the embodiment, the amorphous alloy particles are used as the adhesive, the superplastic deformation characteristics of the amorphous alloy particles are utilized, low-temperature and low-pressure molding is carried out, the hard metal or the hard alloy does not need to be heated to a temperature higher than the melting point of the hard metal or the hard alloy when the hard metal or the hard alloy is molded into a complex part, the amorphous alloy particles only need to flow in a semi-solid state by applying pressure to drive the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, and then the mixed material is cooled to obtain the composite material with a complex structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic flow chart of a composite material processing method provided in an embodiment of the present invention.

Detailed Description

The embodiment of the invention discloses a composite material processing method, which is used for solving the technical problem that the existing hard alloy is difficult to process into a complex structure due to high melting point.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.