Preparation method of large materials
A technology of large size and molding method, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of inability to meet application requirements, high preparation cost, high price, etc., and achieve the effect of not easy to deform, meet application requirements, and save costs.
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Embodiment 1
[0024] This embodiment is to prepare a quadrilateral block samarium cobalt permanent magnet material with a length of 100mm, a width of 100mm and a height of 200mm;
[0025] Using the traditional method, the preparation of this material requires a press of more than 300T to press, and because the height is too high, the density difference between the two ends and the middle density is about 5%, forming a density gradient, which is easy to deform during sintering and cannot meet the needs;
[0026] This example figure 1 Shown, the procedure of its preparation is:
[0027] First use a 100T press to press ten ( figure 1 Only four) small blank blocks 1 with a length of 100mm, a width of 100mm and a height of 20mm are shown;
[0028] Then ten blank pieces 1 are stacked together to form blank 2;
[0029] Then the blank 2 is sealed with a plastic bag, and isostatically pressed under a pressure of 200 MPa, so that a plurality of blank pieces 1 are tightly combined and difficult to ...
Embodiment 2
[0034] This embodiment prepares a cylindrical manganese zinc ferrite core with a diameter of 100 mm and a height of 200 mm;
[0035] Using the traditional method, the preparation of the material requires a press of more than 300T to press, and because the height is too high, the density at the two ends is much higher than the density in the middle, forming a density gradient, which is easy to deform during sintering and cannot meet the needs;
[0036] This example figure 2 Shown, the procedure of its preparation is:
[0037] First use a 100T press to press ten ( figure 1 Only four) small blank blocks 1 with a diameter of 100 mm and a height of 20 mm are shown;
[0038] Then ten blank pieces 1 are stacked together to form blank 2;
[0039] Then the blank 2 is sealed with a plastic bag, and isostatically pressed under a pressure of 400 MPa, so that a plurality of blank pieces 1 are tightly combined and difficult to disperse, and by isostatic pressing, the blank 2 has a unifo...
Embodiment 3
[0044] In this embodiment, a ring-shaped nickel-zinc ferrite core with a diameter of φ200mm×180mm and a height of 200mm is prepared;
[0045] Using the traditional method, the preparation of the material requires a press of more than 300T to press, and because the height is too high, the density at the two ends is much higher than the density in the middle, forming a density gradient, which is easy to deform during sintering and cannot meet the needs;
[0046] This example image 3 Shown, the procedure of its preparation is:
[0047] First use a 100T press to press ten ( figure 1 Only four) φ200mm×180mm high 20mm blank small block 1 is shown;
[0048] Then ten blank pieces 1 are stacked together to form blank 2;
[0049] Then the blank 2 is sealed with a plastic bag, and isostatically pressed under a pressure of 600 MPa, so that a plurality of blank pieces 1 are tightly combined and difficult to disperse, and by isostatic pressing, the blank 2 has a uniform density and is n...
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Abstract
Description
Claims
Application Information
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