A new matrix material and diamond segment
A technology of matrix material and diamond layer is applied in the field of stone cutting tools, which can solve the problems affecting the service life of diamond segments and insufficient flexural strength, and achieve the effects of high flexural strength, improved molding performance, and improved holding force.
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[0056] The present invention also relates to a method for preparing diamond nodules, and the specific technical scheme is as follows:
[0057] Step 1, prepare the carcass material, weigh 60-70% of the first skeleton material, 10-20% of the second skeleton material, 5-15% of the low melting point material, and 5-15% of the iron-nickel nano Crystalline metal material, mixed evenly to obtain the carcass material;
[0058] Step 2, prepare the diamonds, and mix the diamonds with a particle size of 40 / 45~50 / 60 evenly to obtain a layer of diamond particles, wherein 40 / 45 accounts for 40~45%, 45 / 50 accounts for 40~45%, and 50 / 60 accounts for 10% ~20%, the volume concentration is 43~48%; mix the diamonds with a particle size of 40 / 45~50 / 60 evenly to obtain c-layer diamond particles, of which 40 / 45 accounts for 40~45%, and 45 / 50 accounts for 40~45% , 50 / 60 accounts for 10-20%, and the volume concentration is 35-40%;
[0059] Step 3, mix the a-layer diamond particles and c-layer diamon...
Embodiment 1
[0071] Step 1, prepare the carcass material, weigh 65% of the first skeleton material, 15% of the second skeleton material, 10% of the low melting point material, 10% of the iron-nickel nanocrystalline metal material by mass percentage, the above four materials The particle size of the powder is 400 mesh, and the mixture is uniform to obtain the carcass material;
[0072]The first skeleton material is a pre-alloyed powder, and its components and their mass percentages are respectively: 73% Fe, 24% Cu, 2% Sn, 1% Ti. The powder particle size of the first skeleton material is 400 mesh, and the laser particle size D50=19um. The second skeleton material is a pre-alloyed powder, which is also a simple powder, and its composition and mass percentage are: 100% Cu. The low melting point material is a pre-alloyed powder, its components and their mass percentages are: 85% Cu, 15% Sn. The iron-nickel nanocrystalline metal material is a nano pre-alloyed powder, and its components and the...
Embodiment 2
[0079] Step 1, prepare the carcass material, weigh 60% of the first skeleton material, 15% of the second skeleton material, 15% of the low melting point material, and 10% of the iron-nickel nanocrystalline metal material by mass percentage, the above four materials The particle size of the powder is 400 mesh, and the mixture is uniform to obtain the carcass material;
[0080] The first skeleton material is a pre-alloyed powder, and its components and their mass percentages are respectively: 73% Fe, 24% Cu, 2% Sn, 1% Ti. The powder particle size of the first skeleton material is 400 mesh, and the laser particle size D50=19um. The second skeleton material is a pre-alloyed powder, which is also a simple powder, and its composition and mass percentage are: 100% Cu. The low melting point material is a pre-alloyed powder, its components and their mass percentages are: 85% Cu, 15% Sn. The iron-nickel nanocrystalline metal material is a nano pre-alloyed powder, and its components an...
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