CN112676565B - Production method of superhard cermet material superfine spinneret plate - Google Patents
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Abstract
The invention provides a production method of a superhard cermet material superfine spinneret plate, and particularly relates to the technical field of spinneret plates. The invention comprises the following steps: 13-15 parts of manganese powder, 10-15 parts of zirconia powder, 12-15 parts of silicon nitride powder, 10-12 parts of silicon carbide powder, 1-3 parts of platinum powder, 2-5 parts of nickel powder, 0.5-0.8 part of scandium powder, 1-3 parts of germanium powder, 1-3 parts of tungsten carbide powder and 1-2 parts of gallium powder, and screening the various powders by a screen mesh; sieving and mixing; adding water glass into the mixed powder to perform low-speed paste mixing; the mixture after the paste mixing is subjected to mould closing and injection molding through a hole slab mould pressing forming die; pre-drying the hole plate blank mould pressing forming mould at a low temperature; and (4) sintering the formed spinning plate blank in a high-temperature kiln, preserving heat, and slowly cooling to room temperature and taking out. The production method of the ultra-fine spinneret plate made of the ultra-hard cermet material solves the problem that ultra-fine micropores of the spinneret plate are difficult to process, and improves the wear resistance and the high temperature resistance of the spinneret plate.
Description
Technical Field
The invention belongs to the technical field of spinneret plates, and particularly relates to a production method of a super-hard metal ceramic material superfine spinneret plate.
Background
The spinneret plate is used for converting a viscous-flow-state polymer melt or solution into a thin flow with a specific cross section through micropores, and solidifying the thin flow through a solidification medium such as air or a solidification bath to form filaments. The quality of the melt-blown fabric mainly depends on the quality of the spinneret plate, the quality of the melt-blown fabric is directly related to the diameter of the melt-blown fibers and the spinning uniformity of the melt-blown plate, and the smaller the diameter of the melt-blown fibers is, the more difficult the manufacture of the spinneret plate is; the traditional spinneret plate made of metal materials is high in manufacturing cost and short in service life, and is difficult to drill holes by directly adopting a drill bit due to the fact that the holes are small, particularly anisotropic holes such as triangular holes and rhombic holes are usually pre-drilled by an electric spark method, and then the holes are corrected by adopting a special tool. Therefore, a method for producing a superhard cermet material superfine spinneret plate capable of solving the above problems is needed.
Disclosure of Invention
The invention aims to provide a production method of a super-hard cermet material superfine spinneret plate, which solves the problem that superfine micropores of the spinneret plate are difficult to process and improves the wear resistance and high temperature resistance of the spinneret plate.
The invention provides the following technical scheme:
a production method of a superhard cermet material superfine spinneret plate comprises the following steps of preparing raw materials in parts by weight:
s1: 13-15 parts of manganese powder, 10-15 parts of zirconia powder, 12-15 parts of silicon nitride powder, 10-12 parts of silicon carbide powder, 1-3 parts of platinum powder, 2-5 parts of nickel powder, 0.5-0.8 part of scandium powder, 1-3 parts of germanium powder, 1-3 parts of tungsten carbide powder and 1-2 parts of gallium powder, and screening the various powders by a screen mesh;
s2: mixing the powder in the step S1 through a mixer for 10-15 min;
s3: adding water glass into the mixed powder in the step S2 to perform low-speed paste mixing, wherein the water content is 70-80% and the paste is in the shape of paste, and the paste mixing time is 10-15 min;
s4: carrying out mould closing and injection molding on the mixture subjected to paste combining in the step S3 through a hole plate blank mould pressing mould, wherein the hole plate blank mould pressing mould consists of a cover plate, an embedded wire plate, a support plate, an injection molding barrel and a bottom plate, an injection hole is formed in the injection molding barrel, the cover plate and the bottom plate are respectively connected with the upper end and the lower end of the injection molding barrel, the embedded wire plate and the support plate are arranged in the injection molding barrel, the edges of the embedded wire plate and the support plate are connected with the inner side wall of the injection molding barrel, the embedded wire plate is arranged above the support plate, a first convex column and a second convex column are respectively arranged on the upper end surface and the lower end surface of the embedded wire plate, the first convex column and the second convex column respectively penetrate through the cover plate and the support plate, a convex wire is arranged on the second convex column, the convex wire penetrates through the bottom plate, and a spinneret plate blank is added into the injection molding barrel through the, embedding the convex wire into the blank;
s5: pre-drying the orifice plate blank compression molding die subjected to die pressing injection molding in the step S4 at 30 ℃, and then drawing out pre-embedded convex wires after drying the spinneret plate blank;
s6: and (4) taking out the spinning plate blank pre-dried at the low temperature in the step S5, sintering the formed spinning plate blank in a high-temperature kiln, gradually heating to 1520 +/-10 ℃ in the firing process, then preserving the heat for 4-6 hours, and slowly cooling to room temperature and taking out.
Preferably, the screen in the S1 step is 400 mesh.
Preferably, the pre-drying time in the step S5 is 24 h.
Preferably, the inner side wall of the injection molding cylinder is provided with a boss, and the boss is connected with the support plate.
The invention has the beneficial effects that:
the invention adds the materials such as wear-resistant and high-temperature-resistant manganese powder, silicon nitride powder, silicon carbide powder, zirconium oxide powder and the like into the blank, and the blank is fired by adopting a ceramic sintering method, when the spinneret plate blank is manufactured, the convex filaments are pre-embedded into the blank, the pre-embedded convex filaments are drawn out after the spinneret plate blank is dried, and then the spinneret plate is fired, so that the problems of complex traditional production process and high cost of the superfine hole spinneret plate can be solved, and the invention has the characteristics of simple manufacturing process, low production cost, high temperature resistance and wear resistance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is an exploded view of a die forming die for an orifice plate blank according to the present invention;
FIG. 2 is a schematic structural view of a press molding die for orifice plate blanks according to the present invention;
fig. 3 is a sectional view of the die for press-molding the orifice plate blank of the present invention.
Description of reference numerals:
1. a cover plate; 2. pre-burying a wire plate; 21. a first convex column; 22. a second convex column; 221. projecting the silk; 3. a support plate; 4. an injection molding barrel; 41. an injection hole; 42. a boss; 5. a base plate.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, a method for producing a superhard cermet material superfine spinneret plate comprises the following steps of:
s1: 13-15 parts of manganese powder, 10-15 parts of zirconia powder, 12-15 parts of silicon nitride powder, 10-12 parts of silicon carbide powder, 1-3 parts of platinum powder, 2-5 parts of nickel powder, 0.5-0.8 part of scandium powder, 1-3 parts of germanium powder, 1-3 parts of tungsten carbide powder and 1-2 parts of gallium powder, and screening the various powders through a 400-mesh screen;
s2: mixing the powder in the step S1 through a mixer for 10-15 min;
s3: adding water glass into the mixed powder in the step S2 to perform low-speed paste mixing, wherein the water content is 70-80% and the paste is in the shape of paste, and the paste mixing time is 10-15 min;
s4: carrying out die-closing injection molding on the mixture subjected to the paste combining in the step S3 through a hole slab die-pressing forming die;
s5: carrying out low-temperature pre-drying on the hole plate blank compression molding die subjected to die pressing injection molding in the step S4, wherein the low-temperature pre-drying temperature is 30 ℃, and the pre-drying time is 24 hours;
s6: and (4) taking out the spinning plate blank pre-dried at the low temperature in the step S5, sintering the formed spinning plate blank in a high-temperature kiln, gradually heating to 1520 +/-10 ℃ in the firing process, then preserving the heat for 4-6 hours, and slowly cooling to room temperature and taking out.
The orifice plate blank compression molding mold in the step S4 comprises a cover plate 1, an embedded wire plate 2, a support plate 3, an injection molding cylinder 4 and a bottom plate 5, wherein the injection molding cylinder 4 is provided with an injection hole 41, a mixture after paste combination is added into the injection molding cylinder 4 through the injection hole 41, the cover plate 1 and the bottom plate 5 are respectively connected with the upper end and the lower end of the injection molding cylinder 4, the embedded wire plate 2 and the support plate 3 are arranged in the injection molding cylinder 4, the edges of the embedded wire plate 2 and the support plate 3 are connected with the inner side wall of the injection molding cylinder 4, the embedded wire plate 2 is arranged above the support plate 3, the upper end surface and the lower end surface of the embedded wire plate 2 are respectively provided with five first convex columns 21 and a plurality of second convex columns 22, the first convex columns 21 and the second convex columns 22 respectively penetrate through the cover plate 1 and the support plate 3, the lower end of the second convex columns 22 is provided with convex columns 221, the convex columns 221 penetrate through the bottom plate 5, the inner side wall of the injection molding cylinder 4 is provided with bosses 42, the boss 42 is connected with the support plate 3, and the boss 42 facilitates the fixing of the support plate 3.
The working mode of the invention is as follows: materials such as wear-resistant and high-temperature-resistant manganese powder, silicon nitride powder, silicon carbide powder, zirconium oxide powder and the like are added into the blank, so that the high-temperature resistance and the wear resistance of the spinneret plate are improved; the method is characterized in that a ceramic sintering method is adopted for firing, when a spinneret plate blank is manufactured, the spinneret plate blank is added into the injection molding barrel 4 through the injection hole 41, the convex filaments 221 are pre-embedded into the blank, the pre-embedded convex filaments 221 are drawn off after the spinneret plate blank is dried, and then the spinneret plate is fired, so that the problems of complex traditional production process and high cost of the superfine hole spinneret plate can be solved, and the method has the characteristics of simple manufacturing process and low production cost.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A production method of a superhard cermet material superfine spinneret plate is characterized by comprising the following steps: the preparation method comprises the following steps of raw materials in parts by weight:
s1: 13-15 parts of manganese powder, 10-15 parts of zirconia powder, 12-15 parts of silicon nitride powder, 10-12 parts of silicon carbide powder, 1-3 parts of platinum powder, 2-5 parts of nickel powder, 0.5-0.8 part of scandium powder, 1-3 parts of germanium powder, 1-3 parts of tungsten carbide powder and 1-2 parts of gallium powder, and screening the various powders by a screen mesh;
s2: mixing the powder in the step S1 through a mixer for 10-15 min;
s3: adding water glass into the mixed powder in the step S2 to perform low-speed paste mixing, wherein the water content is 70-80% and the paste is in the shape of paste, and the paste mixing time is 10-15 min;
s4: carrying out mould closing and injection molding on the mixture subjected to paste combining in the step S3 through a hole plate blank mould pressing mould, wherein the hole plate blank mould pressing mould consists of a cover plate, an embedded wire plate, a support plate, an injection molding barrel and a bottom plate, an injection hole is formed in the injection molding barrel, the cover plate and the bottom plate are respectively connected with the upper end and the lower end of the injection molding barrel, the embedded wire plate and the support plate are arranged in the injection molding barrel, the edges of the embedded wire plate and the support plate are connected with the inner side wall of the injection molding barrel, the embedded wire plate is arranged above the support plate, a first convex column and a second convex column are respectively arranged on the upper end surface and the lower end surface of the embedded wire plate, the first convex column and the second convex column respectively penetrate through the cover plate and the support plate, a convex wire is arranged on the second convex column, the convex wire penetrates through the bottom plate, and a spinneret plate blank is added into the injection molding barrel through the injection hole, embedding the convex wire into the blank;
s5: pre-drying the orifice plate blank compression molding die subjected to die pressing injection molding in the step S4 at 30 ℃, and then drawing out pre-embedded convex wires after drying the spinneret plate blank;
s6: and (4) taking out the spinning plate blank pre-dried at the low temperature in the step S5, sintering the formed spinning plate blank in a high-temperature kiln, gradually heating to 1520 +/-10 ℃ in the firing process, then preserving the heat for 4-6 hours, and slowly cooling to room temperature and taking out.
2. A method of producing a superhard cermet material superfine spinneret plate according to claim 1, wherein: the mesh in the step S1 was 400 mesh.
3. A method of producing a superhard cermet material superfine spinneret plate according to claim 1, wherein: the pre-drying time in the step S5 is 24 h.
4. A method of producing a superhard cermet material superfine spinneret plate according to claim 1, wherein: the inner side wall of the injection molding cylinder is provided with a boss, and the boss is connected with the supporting plate.
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| CN113174642A (en) * | 2021-04-30 | 2021-07-27 | 苏州市吴中喷丝板有限公司 | Superhard ceramic high-speed kinetic energy gun body for epidemic prevention spinneret body and preparation method |
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