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Granite cutting slice and production method thereof

A technology for cutting discs and granite, which is applied in the field of cutting discs and preparations for cutting granite products, and can solve the problems of unsharp granite cutting discs, short service life, and affecting product quality

Inactive Publication Date: 2011-03-09
浙江神超锯业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are the following problems in the use of granite cutting discs: first, the matrix wears too fast, and the bonding strength between the diamond and the matrix is ​​poor, causing the diamond to fall off from the matrix prematurely, shortening the service life and reducing the utilization rate of the diamond; in order to improve The bonding strength of diamond and matrix and the utilization rate of diamond have also been increased by increasing the sintering temperature to enhance the bonding strength of diamond and matrix, but this is easy to corrode diamond due to high temperature and reduce the performance of diamond, and the effect is not ideal; It is easy to oxidize, which affects the product quality; finally, the granite cutting blade is not sharp, not wear-resistant, and has a short service life
It has become the research and development direction of many research institutes, manufacturers and people of insight to manufacture granite cutting blades that are sharp, wear-resistant and long-lived, but so far there is no better way to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation method of described granite cutting piece, it comprises the steps:

[0028] (1) Stir and mix the metal powders of manganese, cobalt, 663 bronze, tin, iron and nickel with the above-mentioned diamond particles in the above weight ratio.

[0029] (2) Put the above-mentioned mixture into the mold according to the weight of a single hot-pressing cutter head, at 3000-5000Kgf / cm 2 Forming under the cold pressing pressure, and holding the pressure for 2 seconds, it is the semi-finished product of the hot pressing cutter head;

[0030] (3) The semi-finished product of the hot-pressed cutter head is vacuum-filled and sintered with nitrogen at a temperature of 800-900°C for 6-8 minutes; then sintered at 200-500Kgf / cm 2 Heat preservation under the hot pressure, the heat preservation temperature is 800-900 ℃, the time is 3-5 minutes, after cooling, it is the finished product of the hot-pressed cutter head;

[0031] (4) The finished product of the hot-pressed cutte...

Embodiment 1

[0034] Embodiment 1: the present embodiment is prepared by a single hot-pressing cutter head, wherein in the metal powder, manganese 0.27g, cobalt 2.25g, 663 bronze 3.15g, tin 0.9g, iron 1.71g, nickel 0.9g, the above-mentioned metal powder purity is in More than 99.72%; the diamond used is artificial diamond after vacuum coating, its grade is above 20Kg, the particle size is 40-70 mesh, and the diamond content in the hot-pressing cutter head is 0.22-0.67g / cm 3 , Converted to a diamond concentration of 25-75. According to the above preparation method, the above metal powder and diamond particles are fully mixed and put into the mold. 2 The semi-finished product is formed under the cold pressing pressure, and the pressure is kept for 2 seconds, which is the semi-finished product; the semi-finished product is vacuum-filled and sintered with nitrogen at a temperature of 800-900 ° C, and the time is 6-8 minutes; 2 Heat preservation under hot pressure, the heat preservation tempera...

Embodiment 2

[0035] Embodiment 2: the present embodiment is prepared by a single hot-pressing cutter head, wherein in the metal powder, manganese 0.45g, cobalt 1.8g, 663 bronze 3.15g, tin 1.08g, iron 2.25g, nickel 0.27g, the above-mentioned metal powder purity is in More than 99.72%; the diamond used is artificial diamond after vacuum coating, its grade is above 20Kg, the particle size is 40-70 mesh, and the diamond content in the hot-pressing cutter head is 0.22-0.67g / cm 3 , Converted to a diamond concentration of 25-75. According to the above preparation method, the above metal powder and diamond particles are fully mixed and put into the mold. 2 The semi-finished product is formed under the cold pressing pressure, and the pressure is kept for 2 seconds, which is the semi-finished product; the semi-finished product is vacuum-filled and sintered with nitrogen at a temperature of 800-900 ° C, and the time is 6-8 minutes; 2 Heat preservation under hot pressure, the heat preservation temper...

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Abstract

The invention discloses a granite cutting blade and process for preparation. The granite cutting blade is composed of a steel matrix and a hot-pressing cutter head which is impregnated with diamonds. The hot-pressing cutter head is made of metal powder and diamonds, wherein the metal powder is composed of the following weight percentages the purity degree of which is more than 99.6%, manganese 2-5, cobalt 20-30, 663 bronze 25-35, stannum 7-12, iron 10-25 and nickel 3-8. The diamond is man-made diamond which is vacuum coated, the grade is more than 20 kilogram grade, the granularity is 40-70 meshes, the content of the diamond in the hot-pressing cutter head is 0.22-0.67 gram per cubic centimeter, and the invention is prepared by the processes of mixing, cold pressing, vacuum sintering, welding and the like. The invention resolves the problem that the diamond drops off too early, which is caused by that the bonding strength of the diamond and the metal is poor and the matrix is worn too fast, thereby the cutting speed is increased by 20%, and the service life of the products is increased by 30%.

Description

technical field [0001] The invention relates to a cutting sheet, in particular to a cutting sheet for cutting granite products and a preparation method thereof. Background technique [0002] With the advancement of science and the improvement of people's living standards, the construction industry has developed rapidly. Granite products are widely used in buildings and various facilities. The use and amount of granite cutting pieces are also increasing. The processing speed of granite products, Accuracy and production efficiency mainly depend on granite cutting discs. At present, there are the following problems in the use of granite cutting discs: first, the matrix wears too fast, and the bonding strength between the diamond and the matrix is ​​poor, causing the diamond to fall off from the matrix prematurely, shortening the service life and reducing the utilization rate of the diamond; in order to improve The bonding strength of diamond and matrix and the utilization rate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D1/22
Inventor 叶根培
Owner 浙江神超锯业制造有限公司