Method of cutting and squaring single crystal silicon round rod by utilizing diamond line
A technology of diamond cutting wire and single crystal silicon, which is applied in metal processing equipment, fine working devices, grinding machines, etc., can solve problems such as poor verticality, large head margins, and greater impact on finished products, and achieve cost reduction, easy-to-operate effect
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Embodiment 1
[0041] In an exemplary embodiment of the present invention, a method for squaring a monocrystalline silicon round rod by using a diamond wire is provided. Using high-speed feeding of diamond wires to cut monocrystalline silicon round rods;
[0042] Among them, the specification and size of the monocrystalline silicon round rod: the diameter is 216±3mm, and the length is determined according to the requirements of the rod.
[0043] The diamond cutting wire is: the substrate is a high-carbon steel wire with a diameter of 0.39mm-0.42mm, and the substrate is embedded with diamond particles with a particle size of 40um-50um;
[0044] The specific steps of the prescribing method are as follows:
[0045] (1) Winding: The diamond cutting wire protrudes from the winding drum, winds on the tensioning wheel arranged in a staggered manner, and then winds on the guide wheel, and puts the diamond cutting wire horizontally above the workbench; through the cutting wheel and The guide wheel ...
Embodiment 2
[0051] When the other solutions are the same as in the first embodiment, the feed speed is increased to 1.0mm / min, and the feed rate of the new line is reduced from 10m / min to 8m / min. Such as figure 1 , figure 2 As shown, since there are three tensioning wheels, including the first tensioning wheel 1, the second tensioning wheel 2 and the third tensioning wheel 3 which are arranged in a staggered order from bottom to top. A section of square head mounting column 21 is vertically installed at the wheel center of the second tensioning wheel 2, and the end of the square head mounting column 21 has a section of fastening column 22 with external threads. At this time, replace the second tensioning wheel 2 to ensure the tension Validity and accuracy of testing.
Embodiment 3
[0053]When the other solutions are the same as in Embodiment 1, the feed speed is increased to 1.1mm / min, and the feed of the new line is 8m / min. Change the size of the second tensioning wheel accordingly to ensure the thread tension.
[0054] Generally, the surface roughness of the processed monocrystalline silicon square rod is about 0.8-1.0um, and the verticality of the cut surface is 90±0.2° or 90±0.3°. For the crystalline silicon square bar sample, the verticality of adjacent surfaces, surface roughness and cutting time are tested respectively, and Table 1 is obtained, as follows:
[0055] Table 1
[0056]
[0057] It can be seen from the above table that the verticality of the cutting surface is stable and the verticality is good; the surface roughness has been greatly improved, and the cutting time has not been extended.
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