A matrix powder for a diamond tool bit for cutting super-hard refractory bricks and a diamond tool bit material

Abstract

The application discloses a kind of matrix powder of diamond tool bit for cutting superhard refractory brick and diamond tool bit material, and the components and weight percentage of the matrix powder are as follows: FeCu alloy 15-25%; FeCuNiSn alloy 40-50%; cobalt 5-10%; ultrafine FeCoCu alloy 5-10%; brass 10-20%; the components and weight percentage of the diamond tool bit material are as follows: diamond concentration 50-60%; pore former 18-25%; the balance is matrix powder; the matrix material of the application can increase the holding force on diamond, improve the service life of diamond tool bit; and the pore former is added in the diamond tool bit material to produce pores in the matrix powder, improve the chip removal capacity and diamond edge effect, ensure the sharpness of diamond tool bit.

Description

Technical Field

[0001] This invention relates to the field of diamond tool preparation, and in particular to a matrix powder and diamond tool material for cutting ultra-hard refractory bricks. Background Technology

[0002] Refractory bricks, also known as fire bricks, are refractory materials made from refractory clay or other refractory raw materials. They are used as high-temperature building and structural materials for kilns, kiln repair, and various thermal equipment. When used in kiln construction or repair, the rectangular refractory bricks need to be cut into the required shapes for easy use. Currently, diamond cutting blades are commonly used to cut refractory bricks; however, due to the overall hardness of refractory bricks, diamond cutting blades must achieve a certain level of rigidity and sharpness to perform effective cutting. Existing diamond saw blades... The cutting head is composed of diamond and matrix powder. Diamond is an ultra-hard material that acts as the cutting edge, while the matrix powder, composed of elemental metal powder or metal alloy powder, serves to hold the diamond in place. However, existing diamond cutting heads are prone to insufficient holding force of the matrix powder on the abrasive grains, leading to diamond detachment and reducing the service life of the cutting head. Furthermore, the matrix powder of existing diamond cutting heads is too tough and has few pores, affecting chip removal and the cutting edge of the diamond cutting head, resulting in a decrease in the sharpness of the diamond cutting head and consequently a decrease in grinding force.

[0003] In view of this, the inventors, in order to address the numerous shortcomings and inconveniences caused by the imperfections in the aforementioned diamond tool matrix material and diamond tool material, have deeply conceived, actively researched, improved, and tested the design to develop this invention. Summary of the Invention

[0004] The purpose of this invention is to provide a matrix powder and a diamond cutting tip material for cutting ultra-hard refractory bricks. The matrix material can increase the holding force of the diamond and improve the service life of the diamond cutting tip. Furthermore, the addition of a pore-forming agent to the diamond cutting tip material creates pores in the matrix powder, improving chip removal ability and diamond cutting edge effect, and ensuring the sharpness of the diamond cutting tip.

[0005] To achieve the above objectives, the solution of the present invention is:

[0006] A matrix powder for a diamond cutting tip used for cutting ultra-hard refractory bricks, comprising the following components and weight percentages: FeCu alloy 15-25%; FeCuNiSn alloy 40-50%; cobalt 5-10%; ultrafine FeCoCu alloy 5-10%; brass 10-20%.

[0007] The composition and weight percentage of the FeCu alloy are: Fe 70%, Cu 30%.

[0008] The composition and weight percentage of the FeCuNiSn alloy are: Fe 53%, Cu 40%, Ni 3%, Sn 4%;

[0009] The composition and weight percentage of the ultrafine FeCoCu alloy are: Fe 60%, Co 25%, Cu 15%.

[0010] The composition and weight percentage of brass: Cu 60%, Zn 40%.

[0011] The components and weight percentages of the matrix powder are as follows: FeCu alloy 25%; FeCuNiSn alloy 50%; cobalt 10%; ultrafine FeCoCu alloy 5%; brass 10%.

[0012] The components and weight percentages of the matrix powder are as follows: FeCu alloy 20%; FeCuNiSn alloy 45%; cobalt 7.5%; ultrafine FeCoCu alloy 7.5%; brass 15%.

[0013] The components and weight percentages of the matrix powder are as follows: FeCu alloy 15%; FeCuNiSn alloy 40%; cobalt 5%; ultrafine FeCoCu alloy 10%; brass 20%.

[0014] A diamond cutting tool material for cutting ultra-hard refractory bricks, the components and weight percentages of the diamond cutting tool material are as follows: diamond concentration 50-60%; pore-forming agent 18-25%; balance is matrix powder; the matrix powder is the matrix powder described above.

[0015] The diamonds comprise 20-30% HWD92 diamonds with a particle size of 35 / 40, 50-60% HWD92 diamonds with a particle size of 40 / 45, and 20-30% HWD80 diamonds with a particle size of 45 / 50.

[0016] The pore-forming agent has a weight percentage of 20%.

[0017] With the above structure, the present invention provides a matrix powder and a diamond cutting tool material for cutting ultra-hard refractory bricks. The matrix material increases the holding force on the diamond and improves the service life of the diamond cutting tool. Furthermore, the addition of a pore-forming agent to the diamond cutting tool material creates pores within the matrix powder, enhancing chip removal and diamond cutting edge performance, thus ensuring the sharpness of the diamond cutting tool. Specifically, the matrix powder incorporates FeCu, FeCuNiSn, cobalt, and FeCoCu alloys to strengthen the matrix alloy, inhibiting the loss of low-melting-point metals and increasing toughness and wear resistance. Simultaneously, brass lowers the sintering temperature, and the presence of low-melting-point Zn helps improve the wettability of the matrix powder on the diamond, increasing the holding force on the diamond. Moreover, the addition of a pore-forming agent to the diamond cutting tool material creates pores within the matrix, enhancing chip removal and diamond cutting edge performance, thus ensuring tool sharpness. Detailed Implementation

[0018] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0019] This invention discloses a matrix powder for a diamond cutting tool for cutting ultra-hard refractory bricks. The components and their weight percentages are as follows: FeCu alloy 15-25%; FeCuNiSn alloy 40-50%; cobalt 5-10%; ultrafine FeCoCu alloy 5-10%; brass 10-20%.

[0020] This invention discloses a matrix powder for a diamond cutting tip used for cutting ultra-hard refractory bricks. The matrix material increases the holding force of the diamond and improves the service life of the diamond cutting tip. The matrix powder incorporates FeCu, FeCuNiSn, cobalt, and FeCoCu alloys to strengthen the matrix alloy, inhibiting the loss of low-melting-point metals and increasing toughness and wear resistance. Simultaneously, brass lowers the sintering temperature, and the presence of low-melting-point Zn helps improve the wettability of the matrix powder to the diamond, further increasing the holding force and improving the service life of the diamond cutting tip.

[0021] The composition and weight percentage of the FeCu alloy of the present invention are: Fe 70%, Cu 30%; the FeCu alloy has good toughness, strength, and hardness; the composition and weight percentage of the FeCuNiSn alloy are: Fe 53%, Cu 40%, Ni 3%, Sn 4%; in the FeCuNiSn alloy, Ni and Sn lower the sintering temperature and reduce the thermal corrosion of diamond by the binder metal, which can greatly improve the holding force of the Fe-based binder on diamond; the composition and weight percentage of the ultrafine FeCoCu alloy are: Fe 60%, Co 25%, Cu 15%; in the ultrafine FeCoCu, Co increases the holding force on diamond; the composition and weight percentage of the brass are: Cu 60%, Zn 40%; brass reduces the wetting angle of the alloy on diamond and increases it; moreover, the use of pre-alloyed powder makes the mixing uniformity of the matrix material better, and during powder sintering, low-melting-point Zn and Sn are less likely to flow. Example 1

[0022] The components and weight percentages of the matrix powder in the diamond cutting tip for cutting ultra-hard refractory bricks of this invention are as follows: FeCu alloy 25%; FeCuNiSn alloy 50%; cobalt 10%; ultrafine FeCoCu alloy 5%; brass 10%;

[0023] The composition and weight percentage of the FeCu alloy are: Fe 70%, Cu 30%.

[0024] The composition and weight percentage of the FeCuNiSn alloy are: Fe 53%, Cu 40%, Ni 3%, Sn 4%;

[0025] The composition and weight percentage of the ultrafine FeCoCu alloy are: Fe 60%, Co 25%, Cu 15%.

[0026] The composition and weight percentage of brass: Cu 60%, Zn 40%. Example 2

[0027] The matrix powder of the diamond cutting tip for cutting ultra-hard refractory bricks of the present invention comprises the following components and weight percentages: FeCu alloy 20%; FeCuNiSn alloy 45%; cobalt 7.5%; ultrafine FeCoCu alloy 7.5%; brass 15%;

[0028] The composition and weight percentage of the FeCu alloy are: Fe 70%, Cu 30%.

[0029] The composition and weight percentage of the FeCuNiSn alloy are: Fe 53%, Cu 40%, Ni 3%, Sn 4%;

[0030] The composition and weight percentage of the ultrafine FeCoCu alloy are: Fe 60%, Co 25%, Cu 15%.

[0031] The composition and weight percentage of brass: Cu 60%, Zn 40%. Example 3

[0032] The components and weight percentages of the matrix powder in the diamond cutting tip for cutting ultra-hard refractory bricks of this invention are as follows: FeCu alloy 15%; FeCuNiSn alloy 40%; cobalt 5%; ultrafine FeCoCu alloy 10%; brass 20%;

[0033] The composition and weight percentage of the FeCu alloy are: Fe 70%, Cu 30%.

[0034] The composition and weight percentage of the FeCuNiSn alloy are: Fe 53%, Cu 40%, Ni 3%, Sn 4%;

[0035] The composition and weight percentage of the ultrafine FeCoCu alloy are: Fe 60%, Co 25%, Cu 15%.

[0036] The composition and weight percentage of brass: Cu 60%, Zn 40%.

[0037] This invention also discloses a diamond cutting tool material for cutting ultra-hard refractory bricks. The components and weight percentages of the diamond cutting tool material are as follows: diamond concentration 50-60%; pore-forming agent 18-25%; balance is matrix powder; the components and weight percentages of the matrix powder are as follows: FeCu alloy 15-25%; FeCuNiSn alloy 40-50%; cobalt 5-10%; ultrafine FeCoCu alloy 5-10%; brass 10-20%.

[0038] The diamond cutting tool material of this invention incorporates FeCu, FeCuNiSn, cobalt, and FeCoCu alloys to strengthen the matrix alloy, inhibiting the loss of low-melting-point metals and increasing toughness and wear resistance. Simultaneously, brass lowers the sintering temperature, and the presence of low-melting-point Zn helps improve the wettability of the matrix powder to diamond, increasing the diamond's holding power. Furthermore, the addition of a pore-forming agent to the diamond cutting tool material creates pores within the matrix, enhancing chip removal and diamond cutting edge performance, thus ensuring tool sharpness.

[0039] The diamonds described in this invention comprise 20-30% HWD92 diamonds with a particle size of 35 / 40, 50-60% HWD92 diamonds with a particle size of 40 / 45, and 20-30% HWD80 diamonds with a particle size of 45 / 50. Since the interior of the object being cut is not uniform and will have different hardnesses, using diamonds of different particle sizes results in more uniform cutting.

[0040] The pore-forming agent of the present invention has a weight percentage of 20%; the pore-forming agent can increase the sharpness of the diamond cutting tip.

[0041] The present invention comprises the following steps in the preparation of diamond cutting tips:

[0042] Step 1: Accurately weigh the required alloy powders according to the design requirements and add them to a three-dimensional mixer for 2 hours to obtain matrix powder. The components and weight percentages of the matrix powder are as follows: FeCu alloy 15-25%; FeCuNiSn alloy 40-50%; Cobalt 5-10%; Ultrafine FeCoCu alloy 5-10%; Brass 10-20%.

[0043] Step 2: Weigh out the required number of diamonds as specified in the design, then add the wetting agent paraffin (pore-forming agent) to the diamonds and stir again until homogeneous. The diamonds include 20-30% HWD92 diamonds with a particle size of 35 / 40, 50-60% HWD92 diamonds with a particle size of 40 / 45, and 20-30% HWD80 diamonds with a particle size of 45 / 50.

[0044] Step 3: Add the stirred diamond to the aforementioned matrix powder, and mix again for 1 hour using the same process to obtain the mixture;

[0045] Step 4: Press the mixture into a cold-pressed blank using a cold-pressing mold in a cold press. Then, load the cold-pressed blank into a graphite mold according to the design and perform hot pressing and sintering to form a diamond cutting head. Example 4

[0046] The components and weight percentages of the diamond cutting tool material of this invention are as follows: diamond concentration 50-60%; pore-forming agent 20%; balance is matrix powder; the components and weight percentages of the matrix powder are as follows: FeCu alloy 25%; FeCuNiSn alloy 50%; cobalt 10%; ultrafine FeCoCu alloy 5%; brass 10%. Example 5

[0047] The components and weight percentages of the diamond cutting tool material of this invention are as follows: diamond concentration 50-60%; pore-forming agent 20%; balance is matrix powder; the components and weight percentages of the matrix powder are as follows: FeCu alloy 20%; FeCuNiSn alloy 45%; cobalt 7.5%; ultrafine FeCoCu alloy 7.5%; brass 15%. Example 6

[0048] The components and weight percentages of the diamond cutting tool material of this invention are as follows: diamond concentration 50-60%; pore-forming agent 20%; balance is matrix powder; the components and weight percentages of the matrix powder are as follows: FeCu alloy 15%; FeCuNiSn alloy 40%; cobalt 5%; ultrafine FeCoCu alloy 10%; brass 20%.

[0049] The above embodiments are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A matrix powder for a diamond cutting tool for cutting ultra-hard refractory bricks, characterized in that... The components and their weight percentages are as follows: FeCu alloy 15-25%; FeCuNiSn alloy 40-50%; Cobalt 5-10%; Ultrafine FeCoCu alloy 5-10%; Brass 10-20%; The composition and weight percentage of ultrafine FeCoCu alloy: Fe 60%, Co 25%, Cu 15%; The composition and weight percentage of brass: Cu 60%, Zn 40%.

2. The matrix powder for a diamond cutting tool for cutting ultra-hard refractory bricks as described in claim 1, characterized in that: The composition and weight percentage of the FeCu alloy are: Fe 70%, Cu 30%. The composition and weight percentage of the FeCuNiSn alloy are: Fe 53%, Cu 40%, Ni 3%, Sn 4%.

3. The matrix powder for a diamond cutting tool for cutting ultra-hard refractory bricks as described in claim 1, characterized in that... The components and weight percentages of the matrix powder are as follows: FeCu alloy 25%; FeCuNiSn alloy 50%; cobalt 10%; ultrafine FeCoCu alloy 5%; brass 10%.

4. A diamond cutting tool material for cutting ultra-hard refractory bricks, characterized in that... The components and weight percentages of the diamond cutting tool material are as follows: diamond concentration 50-60%; pore-forming agent 18-25%; balance is matrix powder; the matrix powder is the matrix powder described in any one of claims 1-3.

5. The diamond cutting tool material for cutting ultra-hard refractory bricks as described in claim 4, characterized in that: The diamonds comprise 20-30% HWD92 diamonds with a particle size of 35 / 40, 50-60% HWD92 diamonds with a particle size of 40 / 45, and 20-30% HWD80 diamonds with a particle size of 45 / 50.

6. The diamond cutting tool material for cutting ultra-hard refractory bricks as described in claim 4, characterized in that: The pore-forming agent has a weight percentage of 20%.