阅读说明：本技术 一种磨削黑色金属的金属结合剂金刚石砂轮及制备工艺 (Metal bond diamond grinding wheel for grinding ferrous metal and preparation process ) 是由 赵俊超 刘月明 王洪志 贺玉清 沈仕金 林俊杰 李佰申 赵远 王卧龙 于 2019-11-19 设计创作，主要内容包括：本发明公开了一种磨削黑色金属的金属结合剂金刚石砂轮,包括三种组分,各组分按重量百分比计,其中：金刚石50%—80%,金属结合剂20%—50%,辅料2%—3%,所述金刚石为颗粒状,并辅以混料、冷压、烧结成型、脱模、基体连接等工艺制备得到金属结合剂金刚石砂轮韧性大耐磨性好,磨削时不易损坏,无需频繁更换操作简单便捷,磨削效率高成本低,劳动强度小人工成本低,粉尘少对环境污染小,安全健康隐患小,在黑色金属磨削领域,人们普遍的认知是金刚石无法作为磨削材料使用,通过我们不断的实验、摸索、总结,得到采用金刚石磨料的砂轮,完全颠覆人们认知和现有技术,是一个重大的技术突破和创新。(The invention discloses a metal bond diamond grinding wheel for grinding ferrous metal, which comprises three components in percentage by weight, wherein: 50% -80% of diamonds, 20% -50% of metal bond and 2% -3% of auxiliary materials, the diamonds are granular, the metal bond diamond grinding wheel prepared by the processes of mixing, cold pressing, sintering and forming, demolding, substrate connection and the like is high in toughness and good in wear resistance, the diamond grinding wheel is not easy to damage during grinding, the operation is not required to be frequently replaced and is simple and convenient, the grinding efficiency is high in cost and low in labor intensity, the dust is less, the environmental pollution is small, the potential safety hazard is small, in the field of black metal grinding, the common cognition of people is that the diamonds cannot be used as grinding materials, through continuous experiments, groping and summarizing, the grinding wheel adopting diamond grinding materials is obtained, the cognition and the prior art of people are completely subverted, and the grinding wheel is a great technical breakthrough and innovation.)

1. The utility model provides a metal bond diamond grinding wheel of grinding ferrous metal which characterized in that: the paint comprises the following three components in percentage by weight: 50% -80% of diamond, 20% -50% of metal bonding agent and 2% -3% of auxiliary material, wherein the diamond is granular and has the granularity of 20/30-60/70.

2. A metal bond diamond grinding wheel for grinding ferrous metals as claimed in claim 1 wherein: the metal bonding agent is copper-tin alloy.

3. A metal bond diamond grinding wheel for grinding ferrous metals as claimed in claim 1 wherein: the auxiliary material is a pore-forming agent.

4. The process for preparing a metal bond diamond grinding wheel for grinding ferrous metals according to claim 1, wherein the grinding wheel comprises: the method comprises the following steps of 1) mixing materials, namely taking the three components according to the weight percentage, and putting the three components into a stirring tank to be uniformly stirred; 2) cold pressing treatment, namely putting the mixed material obtained in the step 1 into a press machine for cold pressing, wherein the cold pressing pressure is 50T; 3) sintering and forming, namely putting the intermediate product obtained in the step 2 into a sintering furnace for sintering, wherein the temperature in the sintering furnace is controlled at 650 ℃, and the sintering time is 2 hours; 4) demolding, and manually demolding the intermediate product prepared by the sintering furnace; 5) and (4) connecting the intermediate product obtained after demolding in the step (4) and a metal base body into a whole, thus obtaining the final grinding wheel finished product.

5. The process for preparing a metal bond diamond grinding wheel for grinding ferrous metals according to claim 4, wherein the grinding wheel comprises: the metal matrix is iron or aluminum.

Technical Field

The invention belongs to the field of grinding metal grinding wheels, and particularly relates to a metal bond diamond grinding wheel for grinding a high-speed rail and a preparation process thereof.

Background

Along with the rapid development of economy and technology, the development trend of high-speed rails in China is very rapid, in the construction of the high-speed rails, rail grinding is fundamental and very important work which needs to be done by high-speed rails and general railways, for the current rail grinding, the universal rail grinding in the world is to grind by adopting a zirconium corundum grinding wheel, the zirconium corundum is a relatively common abrasive, the grinding of the zirconium corundum grinding wheel can meet certain use requirements, but has a great defect, 96 grinding wheels can be installed on the existing grinding vehicle at one time, the zirconium corundum grinding wheel is easy to wear, needs to be frequently replaced, wastes time and labor, is troublesome and inconvenient to operate, the grinding efficiency can be greatly reduced, the grinding wheel can be greatly replaced, the labor intensity of manually replacing the grinding wheel is high, the labor cost is high, certain potential safety hazards exist due to easy damage and scratching, and more dust can be generated in the grinding process, the grinding wheel has great environmental pollution and great potential safety and health hazards to operators, and if one grinding wheel can perfectly solve the defects and give consideration to the grinding effect, the problems can be easily solved.

The invention aims to solve the technical problem of providing a metal bond diamond grinding wheel which has good grinding effect, is not easy to wear, does not need to be frequently replaced, is simple and convenient to operate, has high grinding efficiency, low cost, low labor intensity and labor cost, less dust, less environmental pollution and less potential safety and health hazards and a preparation process thereof.

Disclosure of Invention

In order to solve the problems that the grinding wheel in the prior art is easy to wear and needs to be frequently replaced, the operation is troublesome and inconvenient, the grinding efficiency is low, the grinding cost is high, the labor intensity is high, the labor cost is high, more dust is polluted greatly to the environment, potential safety and health hazards exist, and the like, the invention adopts the following technical scheme:

the invention provides a metal bond diamond grinding wheel for grinding ferrous metal, which comprises the following three components in percentage by weight: 50% -80% of diamond, 20% -50% of metal bonding agent and 2% -3% of auxiliary material, wherein the diamond is granular and has the granularity of 20/30-60/70.

As an improvement to the invention, the metal bond is a copper-tin alloy.

As a further improvement of the invention, the auxiliary material is a pore-forming agent.

A preparation process of a metal bond diamond grinding wheel for grinding ferrous metal comprises the following steps of 1) mixing materials, taking the three components according to weight percentage, and putting the three components into a stirring tank to be uniformly stirred; 2) cold pressing treatment, namely putting the mixed material obtained in the step 1 into a press machine for cold pressing, wherein the cold pressing pressure is 50T; 3) sintering and forming, namely putting the intermediate product obtained in the step 2 into a sintering furnace for sintering, wherein the temperature in the sintering furnace is controlled at 650 ℃, and the sintering time is 2 hours; 4) demolding, and manually demolding the intermediate product prepared by the sintering furnace; 5) and (4) connecting the intermediate product obtained after demolding in the step (4) and a metal base body into a whole, thus obtaining the final grinding wheel finished product.

As an improvement to the present invention, the metal matrix is iron or aluminum.

The invention has the beneficial effects that: the diamond grinding wheel prepared from the diamond and the metal binder has the advantages of high toughness, good wear resistance, difficulty in damage during grinding, no need of frequent replacement, simple and convenient operation, high grinding efficiency, low labor intensity, low labor cost, less dust, less environmental pollution and small potential safety and health hazards.

Detailed Description

Preferred embodiments of the present invention are described in detail below.

The metal bond diamond grinding wheel for grinding ferrous metal comprises the following three components in percentage by weight: 50% -80% of diamond, 20% -50% of metal bonding agent and 2% -3% of auxiliary material, wherein the diamond is granular and has the granularity of 20/30-60/70.

Wherein the metal bonding agent is copper-tin alloy.

Wherein the auxiliary material is a pore-forming agent.

Through numerous experiments and practical use, the diamond abrasive grinding wheel is found to have the service life 5-10 times that of a common zirconia corundum grinding wheel, the grinding precision (roughness) can reach 0.4, the common zirconia corundum is 0.8, dust generated in grinding is 1/10 of the common zirconia corundum grinding wheel, the use cost is 1/5 of the common zirconia corundum, the diamond abrasive grinding wheel has great advantages and breakthroughs in service life, precision and cost, the diamond abrasive grinding wheel is obvious in environmental protection effect, and the diamond abrasive grinding wheel is indiscriminate for the national environmental protection idea, so that the diamond abrasive grinding wheel has great market prospect and social and economic effect.

In the field of ferrous metal grinding, people generally know that diamond cannot be used as a grinding material, and through continuous experiments, groping and summary, the grinding wheel adopting the diamond grinding material is obtained, so that the cognition and the prior art of people are completely subverted, the grinding wheel is a great technical breakthrough and innovation, and the grinding wheel has a great promoting effect on the technical development of high-speed rails and the construction of the high-speed rails.

A preparation process of a metal bond diamond grinding wheel for grinding ferrous metal comprises the following steps of 1) mixing materials, taking the three components according to weight percentage, and putting the three components into a stirring tank to be uniformly stirred; 2) cold pressing treatment, namely putting the mixed material obtained in the step 1 into a press machine for cold pressing, wherein the cold pressing pressure is 50T; 3) sintering and forming, namely putting the intermediate product obtained in the step 2 into a sintering furnace for sintering, wherein the temperature in the sintering furnace is controlled at 650 ℃, and the sintering time is 2 hours; 4) demolding, and manually demolding the intermediate product prepared by the sintering furnace; 5) and (4) connecting the intermediate product obtained after demolding in the step (4) and a metal matrix into a whole, thus obtaining a final grinding wheel finished product, wherein the metal matrix is iron or aluminum.

The preparation process is simple, special equipment is not needed, extra cost is not increased, the existing equipment can be directly used for production and preparation, and the preparation method is easy to realize.

The invention has the beneficial effects that: the diamond grinding wheel prepared from the diamond and the metal binder has the advantages of good toughness, good wear resistance, difficulty in damage during grinding, no need of frequent replacement, simple and convenient operation, high grinding efficiency, low labor intensity, low labor cost, less dust, less environmental pollution and small potential safety and health hazards.

The above embodiments are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.