阅读说明：本技术 刀具材料及其制备方法 (Cutter material and preparation method thereof ) 是由 李云卿 于 2020-05-06 设计创作，主要内容包括：本发明涉及一种刀具材料及其制备方法,刀具材料包括如下重量百分比原料：50-60％的碳化钨粉、10-20％的钴粉、20-30％的碳化物固溶体和2-8％的碳化铌。方法包括：先按如下重量百分比称取各组分：55％的碳化钨粉、15％的钴粉、25％的碳化物固溶体、5％的碳化铌以及预设量的钨粉；加入酒精进行湿磨；过筛沉淀；干燥去酒精；再过筛；加入成型剂制粒；再过筛成型；压坯；烧结；最后进行机械加工。将刀具材料制成刀具后,在铣削加工极为粗糙的钢铁及合金材料的管道时,具有优良的铣削加工性能。并且,进给量较大,切削深度较大。相比传统的刀具材料制成的刀具,抗冲击、抗热震和抗边缘磨损的能力更强,切削的效果也更佳,大大提高了刀具的使用寿命以及切削效率。(The invention relates to a cutter material and a preparation method thereof, wherein the cutter material comprises the following raw materials in percentage by weight: 50-60% of tungsten carbide powder, 10-20% of cobalt powder, 20-30% of carbide solid solution and 2-8% of niobium carbide. The method comprises the following steps: firstly, weighing the following components in percentage by weight: 55% of tungsten carbide powder, 15% of cobalt powder, 25% of carbide solid solution, 5% of niobium carbide and a preset amount of tungsten powder; adding alcohol for wet grinding; sieving and precipitating; drying to remove alcohol; sieving again; adding a forming agent for granulation; sieving and forming; pressing into a blank; sintering; and finally, machining. After the cutter material is made into the cutter, the pipeline milling cutter has excellent milling processing performance when being used for milling extremely rough steel and alloy pipelines. Further, the feed amount is large and the cutting depth is large. Compared with a cutter made of a traditional cutter material, the cutter has stronger impact resistance, thermal shock resistance and edge abrasion resistance, has better cutting effect, and greatly prolongs the service life of the cutter and improves the cutting efficiency.)

1. The cutter material is characterized by comprising the following raw materials in percentage by weight: 50-60% of tungsten carbide powder, 10-20% of cobalt powder, 20-30% of carbide solid solution and 2-8% of niobium carbide.

2. The tool material according to claim 1, further comprising a predetermined amount of tungsten powder to adjust the mass percentage of carbon in the tungsten carbide powder to 5.9% ± 0.02%.

3. The tool material of claim 2 wherein the carbide solid solution comprises, in weight percent, 5.75% tantalum and 7.35% titanium, with the balance being the tungsten powder and the carbon.

4. The tool material of claim 2, wherein the tungsten carbide and the tungsten powder each have a particle size of 3 to 4 microns; the particle size of the cobalt powder is 1-2 microns.

5. The preparation method of the cutter material is characterized by comprising the following operation steps of:

firstly, weighing the following components in percentage by weight: 55% of tungsten carbide powder, 15% of cobalt powder, 25% of carbide solid solution, 5% of niobium carbide and a preset amount of tungsten powder; adding alcohol for wet grinding; sieving and precipitating; drying to remove alcohol; sieving again; adding a forming agent for granulation; sieving and forming; pressing into a blank; sintering; and finally, machining.

6. The method of manufacturing a tool material according to claim 5, wherein the tool material is subjected to a coating treatment after the machining.

Technical Field

The invention relates to the technical field of powder metallurgy, in particular to a cutter material and a preparation method thereof.

Background

Powder metallurgy is an industrial technology for preparing metal powder or metal powder as a raw material, and preparing metal materials, composite materials and various products through forming and sintering. At present, powder metallurgy technology has been widely used in the fields of transportation, machinery, electronics, aerospace, weapons, new energy, information, and nuclear industries, among others. The powder metallurgy technology has a series of advantages of remarkable energy saving, material saving, excellent product performance, high product precision, good stability and the like, and is very suitable for mass production and manufacturing. In addition, materials or complex parts that cannot be directly prepared by casting and machining methods can also be manufactured by powder metallurgy techniques.

High-speed steel and hard alloy are two materials which are widely applied in the current mechanical cutting high-speed cutter, and according to incomplete statistics, the hard alloy cutter accounts for 55% of the total consumption of the cutter in the world. Hard alloy has high hardness, strength, wear resistance and corrosion resistance, and is known as "industrial teeth".

At present, when extremely rough steel and alloy material pipelines are cut, the cutting efficiency is low.

Disclosure of Invention

The invention provides a cutter material and a preparation method thereof, aiming at solving the problem of low cutting efficiency when extremely rough steel and alloy material pipelines are cut.

The cutter material provided for realizing the purpose of the invention comprises the following raw materials in percentage by weight: 50-60% of tungsten carbide powder, 10-20% of cobalt powder, 20-30% of carbide solid solution and 2-8% of niobium carbide.

In one specific embodiment, the tool material further comprises a preset amount of tungsten powder, so that the mass percent of carbon in the tungsten carbide powder is adjusted to 5.9% ± 0.02%.

In one embodiment, the carbide solid solution comprises, in weight percent, 5.75% tantalum and 7.35% titanium, with the balance being tungsten powder and carbon.

In one embodiment, the tungsten carbide and tungsten powder have a particle size of 3-4 microns; the particle size of the cobalt powder is 1-2 microns.

The invention also provides a preparation method of the cutter material, which comprises the following operation steps:

firstly, weighing the following components in percentage by weight: 55% of tungsten carbide powder, 15% of cobalt powder, 25% of carbide solid solution, 5% of niobium carbide and a preset amount of tungsten powder; adding alcohol for wet grinding; sieving and precipitating; drying to remove alcohol; sieving again; adding a forming agent for granulation; sieving and forming; pressing into a blank; sintering; and finally, machining.

In one embodiment, the tool material is coated after machining.

The invention has the beneficial effects that: the cutter material provided by the invention has excellent processing performance when a pipeline made of extremely rough steel and alloy materials is milled and processed after being made into a cutter. Further, the feed amount is large and the cutting depth is large. Compared with a cutter made of a traditional cutter material, the cutter has stronger impact resistance, thermal shock resistance and edge abrasion resistance, has better cutting effect, and greatly prolongs the service life of the cutter and improves the cutting efficiency.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a process flow diagram of one embodiment of a method for preparing a cutting tool material according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.