Long-life cutting tool and production process

Abstract

The invention discloses a long-service-life cutting tool and a production technology, and belongs to the technical field of cutting tools, and the production technology specifically comprises the following steps that S1, a cleaning tool is blow-dried for standby application after being cleaned; s2, the cutting tool is put into a deposition furnace, then the deposition furnace is vacuumized, inert gas is introduced into the furnace, the gas pressure ranges from-70 KPa to-60 KPa, and the deposition furnace is heated so that the surface temperature of the cutting tool can be adjusted to 800 DEG C to 100 DEG C; s3, a transition layer is generated on the surface of the tool base body, and the transition layer is made of Ti or TiAl; s4, the tool is taken out and put into magnetron sputtering vacuum equipment, and a wear-resistant layer is deposited; and S5, cooling is conducted, the tool is taken out, and the long-service-life tool with high wear resistance is obtained. According to the preparation process disclosed by the invention, the transition layer is generated on the surface of the cutting tool, and then the wear-resistant layer is generated on the surface of the transition layer, so that the tool with the composite coating is formed. The cutting tool prepared by the preparation process is high in toughness, good in wear resistance and long in service life.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cutting tools, and particularly relates to a high-life cutting tool and a production process. BACKGROUND

[0002] With the development of social economy, the technology and manufacturing and processing level of China have been continuously improved in recent years. In this case, especially in the processing and production of aerospace, automobile and other parts, enterprises have higher and higher requirements for the performance of cutting tools, and require the cutting tools to have high hardness and excellent wear resistance. The surface coating of the cutting tool plays a key role in the improvement of the performance of the cutting tool and the progress of cutting processing technology, and is an effective way to improve the wear resistance, heat resistance and anti-chipping performance of the cutting tool. Coated cutting tools have become an important symbol of modern cutting tools. However, the comprehensive performance of the cutting tools on the market cannot meet our needs in actual production.

[0003] Based on this, the application discloses a high-wear-resistance alloy cutting tool and a processing process thereof, so as to obtain a high-wear-resistance and high-hardness alloy cutting tool. SUMMARY

[0004] The application aims to provide a high-life cutting tool and a production process to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, one technical scheme adopted by the application is as follows: a high-life cutting tool and a production process, comprising the following steps.

[0006] S1: cleaning the cutting tool and then blowing dry for standby;

[0007] S2: placing the cutting tool into a deposition furnace, then vacuumizing the deposition furnace, introducing inert gas into the furnace, the gas pressure being-70 to-60 KPa, and heating the deposition furnace to adjust the surface temperature of the cutting tool to 800-100 DEG C;

[0008] S3: generating a transition layer on the surface of the cutting tool base, the transition layer being composed of Ti or TiAl;

[0009] S4: taking out the cutting tool and placing it into a magnetron sputtering vacuum device to deposit a wear-resistant layer;

[0010] S5: cooling, taking out the cutting tool, and obtaining a high-life cutting tool with high wear resistance.

[0011] Preferably, in the step S2, the pressure in the furnace should not be higher than 10 pa, and the mixture gas of CH4, H2 and N2 is introduced into the furnace.

[0012] Preferably, in the step S4, the transition layer is heated to 300-500℃ under vacuum environment, the surface of the substrate is sputter etched for 30-60min under a bias voltage of -60V to -80V in high-purity nitrogen, and then the deposition of the wear-resistant layer is performed.

[0013] Preferably, the composition of the wear-resistant layer is (TiAlTaCrZr)N, and the atomic percentage content is: Ti 3-20%, Al 5-35%, Ta 5-25%, Cr 10-30%, Zr 5-40%, and N 5-50%.

[0014] Preferably, the thickness of the transition layer is ≤400nm, and the thickness of the wear-resistant layer is 3-5μm.

[0015] Preferably, the cleaning pretreatment is the surface treatment of the cutting tool with alcohol or acetone.

[0016] Preferably, the flow rate ratio of CH4, H2, and N2 is 1:80-150:1-3.

[0017] The present application has the following advantages: the disclosed preparation process forms a composite coated cutting tool by generating a transition layer on the surface of the cutting tool, and then generating a wear-resistant layer on the surface of the transition layer. The cutting tool prepared by the preparation process has high toughness, good wear resistance, and long service life. In addition, by reasonably adjusting the flow rate ratio of CH4, H2, and N2 of the reaction gas, the transition layer coated inside the cutting tool has good electrical conductivity, which not only facilitates the coating of the wear-resistant layer of the cutting tool, but also expands the application field of the cutting tool. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the production flow chart of the high-life cutting tool and production process in the present application. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the protection scope of the present application can be more clearly defined.

[0020] Embodiment:

[0021] Reference Figure 1 A high-life cutting tool and production process, comprising the following steps:

[0022] S1: cleaning the cutting tool after cleaning and blowing dry for use;

[0023] S2: Put the cutter into the deposition furnace, then vacuumize the furnace, introduce inert gas into the furnace, the gas pressure is -70 to -60 KPa, heat the furnace to adjust the surface temperature of the cutting tool to 800-100℃;

[0024] S3: Form a transition layer on the surface of the tool base, the transition layer is composed of Ti or TiAl;

[0025] S4: Take out the tool and put it into a magnetron sputtering vacuum device to deposit a wear-resistant layer;

[0026] S5: Cool, take out the tool, and obtain a high-life tool with high wear resistance.

[0027] In the S2 step, the pressure in the furnace should not be higher than 10 pa, and a mixture of CH4, H2, and N2 is introduced into the furnace.

[0028] In the S4 step, the transition layer is heated to 300-500℃ in a vacuum environment, a bias voltage of -60V to -80V is applied to the base in high-purity nitrogen, and the surface is sputter etched for 30-60 min, followed by deposition of the wear-resistant layer.

[0029] The wear-resistant layer is composed of (TiAlTaCrZr)N, and the atomic percentage content is: Ti 3-20%, Al 5-35%, Ta 5-25%, Cr 10-30%, Zr 5-40%, and N 5-50%.

[0030] The thickness of the transition layer is ≤400 nm, and the thickness of the wear-resistant layer is 3-5 μm.

[0031] The pre-cleaning treatment is surface treatment of the cutting tool with alcohol or acetone.

[0032] The flow rate ratio of CH4, H2, and N2 is 1:80-150:1-3.

[0033] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A long-life cutting tool and production process characterized by: The method comprises the following steps: S1: cleaning the cutting tool and drying it; S2: placing the cutting tool into a deposition furnace, vacuumizing the furnace, introducing inert gas into the furnace, and heating the furnace to adjust the surface temperature of the cutting tool to 800-100℃, with the gas pressure being -70 to -60 KPa; S3: forming a transition layer on the surface of the cutting tool, with the transition layer being composed of Ti or TiAl; S4: taking out the cutting tool and placing it into a magnetron sputtering vacuum device to deposit a wear-resistant layer; S5: cooling, taking out the cutting tool, and obtaining a high-life cutting tool with high wear resistance.

2. A long-life cutting tool and production process according to claim 1, characterized in that: In the step S2, the pressure in the furnace should not be higher than 10 Pa, and the mixture of CH4, H2, and N2 is introduced into the furnace.

3. A long-life cutting tool and production process according to claim 2, characterized in that: In the step S4, the transition layer is heated to 300-500℃ in a vacuum environment, a bias voltage of -60V to -80V is applied to the substrate in high-purity nitrogen, and the surface is sputter etched for 30-60 min, followed by deposition of the wear-resistant layer.

4. A long-life cutting tool and production process according to claim 3, characterized in that: The wear-resistant layer is composed of (TiAlTaCrZr)N, and the atomic percentage content is: Ti 3-20%, Al 5-35%, Ta 5-25%, Cr 10-30%, Zr 5-40%, and N 5-50%.

5. A long-life cutting tool and production process according to claim 1, characterized in that: The thickness of the transition layer is ≤400 nm, and the thickness of the wear-resistant layer is 3-5 μm.

6. A long life cutting tool and production process according to claim 1 wherein: The pre-cleaning treatment is surface treatment of the cutting tool with alcohol or acetone.

7. A long life cutting tool and production process according to claim 2 wherein: The flow rate ratio of CH4, H2, and N2 is 1:80-150:1-3.

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