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A high-strength hole saw and its manufacturing method

A high-strength, hole-sawing technology, which is applied in chemical instruments and methods, cleaning methods and utensils, cleaning methods using liquids, etc., can solve the problem of reduced mechanical strength of hole saws, decreased bonding performance of alloy materials and ceramic-based coatings, and hole Saw damage and other problems to achieve the effect of improving bonding performance, alleviating thermal mismatch, and improving corrosion resistance

Active Publication Date: 2022-04-15
无锡蓬天工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hole saws are often made of alloys as a saw tool. In order to improve their strength, hardness, wear resistance, and corrosion resistance, manufacturers often deposit ceramic-based coatings on their surfaces, which has a corresponding effect to a certain extent. However, because the hole saw will continuously generate heat during the cutting process, the long-term heating and cooling cycle will lead to a decrease in the bonding performance between the alloy material and the ceramic-based coating, and the mechanical strength of the hole saw will be reduced. In severe cases, the hole saw will be damaged.

Method used

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  • A high-strength hole saw and its manufacturing method
  • A high-strength hole saw and its manufacturing method
  • A high-strength hole saw and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A high-strength hole saw, consisting of a barrel-shaped base (1) and teeth (2), the saw teeth (2) consisting of a saw-tooth base (3), a bonding layer (4) with a thickness of 0.7 μm and a reinforcement with a thickness of 1.6 μm Layer (5) consists of;

[0035] Both the cylindrical base (1) and the serrated base (3) are made of high-performance high-speed steel;

[0036] The bonding layer (4) is an MCrAlNbY alloy material, wherein M is a combination of Co and Ni, and is composed of the following elements by mass percentage:

[0037] Co: 30%, Ni: 10%, Al: 10.5%, Nb: 2.2%, Y: 0.75%, and the rest is Cr;

[0038] The reinforcement layer (5) is made of TiC 0.4 N 0.6 and CoO 2 Composition by mass ratio 10:1.

[0039] The preparation method of the above-mentioned high-strength hole saw is as follows:

[0040] According to the ratio of elemental composition, block pure metals Co, Ni, Al, Nb, Y, Cr are put into the smelting furnace, and the smelting furnace is evacuated to 1...

Embodiment 2

[0042] A high-strength hole saw, consisting of a cylindrical base (1) and teeth (2), the saw teeth (2) consisting of a saw-tooth base (3), a bonding layer (4) with a thickness of 0.75 μm and a reinforcement with a thickness of 1.8 μm Layer (5) consists of;

[0043] Both the cylindrical base (1) and the serrated base (3) are made of high-performance high-speed steel;

[0044] The bonding layer (4) is an MCrAlNbY alloy material, wherein M is a combination of Co and Ni, and is composed of the following elements by mass percentage:

[0045] Co: 20%, Ni: 20%, Al: 10.5%, Nb: 2.2%, Y: 0.75%, and the rest is Cr;

[0046] The reinforcement layer (5) is made of TiC 0.4 N 0.6 and CoO 2 Composition by mass ratio 10:1.

[0047] The preparation method of the above-mentioned high-strength hole saw is as follows:

[0048] According to the ratio of elemental composition, block pure metals Co, Ni, Al, Nb, Y, Cr are put into the smelting furnace, and the smelting furnace is evacuated to 1×...

Embodiment 3

[0050] A high-strength hole saw, consisting of a barrel-shaped base (1) and teeth (2), the saw teeth (2) consisting of a saw-tooth base (3), a bonding layer (4) with a thickness of 0.65 μm and a reinforcement with a thickness of 1.5 μm Layer (5) consists of;

[0051] Both the cylindrical base (1) and the serrated base (3) are made of high-performance high-speed steel;

[0052] The bonding layer (4) is an MCrAlNbY alloy material, wherein M is a combination of Co and Ni, and is composed of the following elements by mass percentage:

[0053] Co: 30%, Ni: 15%, Al: 10%, Nb: 2%, Y: 0.1%, and the rest is Cr;

[0054] The reinforcement layer (5) is made of TiC 0.4 N 0.6 and CoO 2 Composition by mass ratio 8:1.

[0055] The preparation method of the above-mentioned high-strength hole saw is as follows:

[0056] According to the ratio of elemental composition, block pure metals Co, Ni, Al, Nb, Y, Cr are put into the smelting furnace, and the smelting furnace is evacuated to 1×10 ...

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Abstract

The invention relates to the technical field of cutting tools, in particular to a high-strength hole saw and a manufacturing method, which are composed of a cylindrical base and sawtooth, the sawtooth is composed of a sawtooth base, an adhesive layer and a reinforcement layer, the sawtooth base, adhesive The layer and the reinforcement layer are arranged from the inside out; the bonding layer is an MCrAlNbY alloy material, wherein M is Co, Ni or a combination of the two; by mass percentage, the MCrAlNbY alloy material is composed of the following elements: M: 38‑ 45%, Al: 9.5‑11%, Nb: 2‑4%, Y: 0.75‑0.1%, and the rest is Cr; the reinforcement layer is made of TiC x N (1‑x) and CoO 2 Composition, wherein, x is 0.35-0.7, the high-strength hole saw of the present invention has good mechanical properties, and the relevant mechanical properties have not been affected by the cold and hot cycle test, and the application prospect is broad.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to a high-strength hole saw and a manufacturing method. Background technique [0002] As a special sawing tool for processing circular holes in modern industry or engineering, the hole saw has many advantages such as simple and flexible operation, convenient portability, safety, and wide application. Open holes on any curved surface such as plane and spherical surfaces of various plates such as copper, iron, stainless steel, and plexiglass. [0003] Hole saws are often made of alloys as a saw tool. In order to improve their strength, hardness, wear resistance, and corrosion resistance, manufacturers often deposit ceramic-based coatings on their surfaces, which has a corresponding effect to a certain extent. However, because the hole saw will continuously generate heat during the cutting process, the long-term heating and cooling cycle will lead to a decrease in the bonding pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23Q11/00B08B3/12C23C14/35C23C14/16C23C14/06C23C14/08C22C30/00C23C14/02C22C38/22C22C38/24
CPCB23P15/00B23Q11/0042B08B3/12C23C14/35C23C14/165C23C14/025C23C14/0664C23C14/085C22C30/00C22C38/22C22C38/24
Inventor 王春晓
Owner 无锡蓬天工具有限公司
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