Preparation method of diamond segment
A diamond segment, diamond technology, applied in other manufacturing equipment/tools, turbines, engine components, etc., can solve the problems of unsuitable mass production, large consumption of molds, discontinuous production, etc. High quality and good stability
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Embodiment 1
[0040] A method for preparing a diamond nodule, comprising the following steps in sequence:
[0041] (1) Weigh a certain amount of pre-alloyed powder, diamond, and additives, and put them into a ball mill and mix them evenly;
[0042] (2) Compressed diamond segments;
[0043] (3) Carry out high-temperature continuous sintering of the pressed diamond blocks;
[0044] (4) Grinding the sintered diamond segments.
[0045] The mass percentages of pre-alloyed powder, diamond, and additives are 85%, 10%, and 5% respectively, and the mixing time of the three raw materials is 15 hours. The mass percent of each component in the pre-alloyed powder is: 40% iron, 15% nickel, 30% copper, and 15% tin. The particle size of the pre-alloyed powder is 5 μm, and the particle size of the diamond is 30 / 40 mesh.
[0046] Additives consist of cold press lubricants and antioxidants. The cold press lubricant is zinc stearate, and the antioxidant is sodium sulfite. Two-way cold pressing of dia...
Embodiment 2
[0050] A method for preparing a diamond segment is the same as in Example 1, except that the mass percentages of pre-alloyed powder, diamond, and additives are 99%, 0.5%, and 0.5%, respectively, and the mixing time of the three raw materials is 24 hours. The mass percentage of each component in the pre-alloyed powder is: iron 35%, nickel 10%, copper 15%, tin 10%, phosphorus 5%, silicon 8%, titanium 10%, magnesium 7%. The particle size of the pre-alloyed powder is 25 μm, and the particle size of the diamond is 170 / 200 mesh.
[0051] Additives consist of cold press lubricants and antioxidants. The cold press lubricant is graphite, and the antioxidant is sodium bisulfite. Two-way cold pressing of the diamond segment is formed by an automatic press, and the pressure of the press is set to 1200MPa / m 2 . The pressing weight of a single diamond segment is 80g, and the pressed diamond segments are evenly placed in the sintering trays, with 50 pieces placed on each tray.
[005...
Embodiment 3
[0055] A method for preparing a diamond segment is the same as in Example 1, except that the mass percentages of pre-alloyed powder, diamond, and additives are 94.9%, 5%, and 0.1%, respectively, and the mixing time of the three raw materials is 1 hour. The mass percent of each component in the pre-alloyed powder is: 5% iron, 30% nickel, 20% copper, 10% tin, 10% manganese, 5% aluminum, and 20% magnesium. The particle size of the pre-alloyed powder is 15 μm, and the particle size of the diamond is 40 / 45 mesh.
[0056] Additives consist of cold press lubricants and antioxidants. The cold press lubricant is liquid paraffin, and the antioxidant is sodium thiosulfite. Two-way cold pressing of diamond segments is formed by an automatic press, and the pressure of the press is set at 800MPa / m 2 . The pressing weight of a single diamond segment is 50g, and the pressed diamond segments are evenly placed in the sintering tray, and one hundred pieces are placed on each tray.
[005...
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