CN202532873U - Screen mesh sintering furnace - Google Patents
Screen mesh sintering furnace Download PDFInfo
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- CN202532873U CN202532873U CN2012202051659U CN201220205165U CN202532873U CN 202532873 U CN202532873 U CN 202532873U CN 2012202051659 U CN2012202051659 U CN 2012202051659U CN 201220205165 U CN201220205165 U CN 201220205165U CN 202532873 U CN202532873 U CN 202532873U
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Abstract
The utility model belongs to the technical field of screen mesh sintering, particularly discloses a screen mesh sintering furnace. The screen mesh sintering furnace comprises a furnace body which is composed of a furnace wall and a furnace chamber. Hydraulic mechanisms are arranged above the furnace body, a first through hole is arranged on the furnace chamber, a second through hole corresponding to the position of the first through hole is arranged on the upper portion of a sintering chamber, hydraulic push rods of the hydraulic mechanisms penetrates through the first through hole and the second through hole, and each hydraulic push rod comprises a heat-resisting push rod located at the top end of the hydraulic push rod and a metal supporting rod located behind the heat-resisting push rod. In the process of sintering, pressure between screen mesh pieces of a sintering screen mesh group is increased to enable one-step sinter molding to be achieved. In the prior art, the process of sintering, cold rolling and secondary sintering is used, or the process of a plurality of the circulations is used, compared with the prior art, energy consumption is lowered, and production cost is lowered; an isolation layer is saved, washing processes are reduced, and work efficiency is improved; and the problem that stainless steel materials are damaged is avoided, and filter precision of the sintering screen mesh is more even.
Description
Technical field
The utility model belongs to the silk screen sintering technical field, particularly a kind of silk screen sintering stove.
Background technology
Sintering net is to adopt multiple layer metal silk establishment net through special lamination compacting, through a kind of novel filter material with higher-strength and whole rigidity that the vacuum drying oven sintering forms, has overcome that woven wire intensity is low, rigidity is poor, the yielding unsettled deficiency of mesh.Be widely used in fields such as oil, chemical industry, the energy, Aeronautics and Astronautics, safety, environmental protection, medicine, electric power.
The capital equipment that silk screen sintering adopts is the silk screen sintering stove, and the silk screen sintering stove that uses at present at first vacuumizes, and adopts high temperature sintering then; Because each net sheet contact point is few, in first time during high temperature sintering, each net have only between the sheet few part contact point can sintering together; All the other major parts can not contact, and the intensity of sintering net is low especially, and needing will need the sintering networking of sintering rolling after the cooling; Making did not have the contact point of contact further to contact originally; And then sintering, in order to improve the intensity of sintering net, carry out 3-4 above-mentioned circulations sometimes.
Use present sintering furnace to carry out the sintering of wire netting sheet, have following defective: one of which, adopt sintering, cold rolling, sintering or repeatedly circulation again, increased energy consumption, reduce operating efficiency, thereby improved production cost; Its two, before sintering, with placing separation layer between each sintering networking; After firing completion at every turn, need the cleaning separation layer, spreading new separation layer more again before the sintering next time; Not only waste separation layer, but also increased matting, reduced operating efficiency; Its three, in repeatedly sintering and cold-rolled process, easily stainless steel is damaged, make that the filtering accuracy of sintering net is inhomogeneous.
The utility model content
The technical problem that the utility model solves just provides a kind of high efficiency, the sintering net product intensity is high, filtering accuracy is even, production cost is low, the silk screen sintering stove of energy-conserving and environment-protective.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
The silk screen sintering stove; Comprise the body of heater of forming by furnace wall and furnace chamber; In described furnace chamber, be provided with the sintering chamber that insulation material is processed, described furnace wall is provided with the vacuum orifice that is connected with vaccum-pumping equipment, on described furnace wall, also is provided with the cooling gas inlet, refrigerating gas outlet and the hydrogen inlet that are communicated with said sintering chamber; In said sintering chamber, be provided with heater; It is characterized in that: above said body of heater, be provided with hydraulic mechanism, on said furnace wall, have first through hole, above said sintering chamber, have second through hole with the said first through hole correspondence position; The hydraulic mandril of said hydraulic mechanism passes described first through hole and second through hole
Said hydraulic mandril comprises heat-resisting push rod that is positioned at the top and the metallic support rod that is positioned at said heat-resisting push rod rear; Said heat-resisting push rod is processed by material high temperature resistant and that the coefficient of heat conduction is low, in described metallic support rod set inside the cooling duct with the metallic support rod external communications is arranged; Between said first through hole and said metallic support rod, be provided with sealing gasket; The diameter of said second through hole is greater than the diameter of heat-resisting push rod.
Its additional technical feature is:
The area of section of said heat-resisting push rod is 0.95-0.97 with the ratio of the area of section of said second through hole;
Said heat-resisting push rod is round table-like, and the area of section on said heat-resisting push rod top is 0.85-0.87 with the ratio of the area of section of second through hole, and the area of section of said heat-resisting push rod base portion is 0.97-0.98 with the ratio of the area of section of second through hole.
The silk screen sintering stove that the utility model provided is compared with prior art and is had the following advantages: one of which; Owing to comprise the body of heater of forming by furnace wall and furnace chamber; In described furnace chamber, be provided with the sintering chamber that insulation material is processed; Described furnace wall is provided with the vacuum orifice that is connected with vaccum-pumping equipment; On described furnace wall, also be provided with the cooling gas inlet, refrigerating gas outlet and the hydrogen inlet that are communicated with said sintering chamber, in said sintering chamber, be provided with heater, above said body of heater, be provided with hydraulic mechanism; On said furnace wall, have first through hole; Above said sintering chamber, have second through hole with the said first through hole correspondence position, the hydraulic mandril of said hydraulic mechanism passes described first through hole and second through hole, and said hydraulic mandril comprises heat-resisting push rod that is positioned at the top and the metallic support rod that is positioned at said heat-resisting push rod rear; Said heat-resisting push rod is processed by material high temperature resistant and that the coefficient of heat conduction is low, in described metallic support rod set inside the cooling duct with the metallic support rod external communications is arranged; Between said first through hole and said metallic support rod, be provided with sealing gasket; The diameter of said second through hole is greater than the diameter of heat-resisting push rod; In to sintering networking high temperature sintering; Adopt the downward roof pressure of hydraulic mechanism to be positioned at the material pressing plate of sintering networking upper end, it is more to make the sintering networking respectively net between the sheet contact point, and the sintering net product intensity that sinters into is big; Its two, heat-resisting push rod adopts high temperature resistant and material that the coefficient of heat conduction is low is processed, not only can be high temperature resistant; Also be unlikely to the heat transferred metallic support rod in the sintering chamber; And in metallic support rod, be provided with the cooling duct with the metallic support rod external communications, and can effectively reduce the temperature of metallic support rod, the temperature around the sealing gasket that making wins is provided with between through hole and the metallic support rod is lower; Prolong the service life of sealing gasket, improved the sealing effectiveness of sealing gasket; Its three because the sealing function of sealing gasket, the vacuum when having guaranteed sintering in the body of heater, but also the inert gas that has guaranteed in cooling procedure, to fill into is not easy to run out of; They are four years old; Since the ratio of the area of section of said heat-resisting push rod and the area of section of said second through hole be 0.95-0.97 or said heat-resisting push rod be round table-like; The area of section on said heat-resisting push rod top is 0.85-0.87 with the ratio of the area of section of second through hole; The area of section of said heat-resisting push rod base portion is 0.97-0.98 with the ratio of the area of section of second through hole; In the time of can guaranteeing to vacuumize like this that pressure size in the atmospheric pressure in the sintering chamber and the furnace chamber is identical, and guarantee few as much as possible being lost in the furnace chamber of heat in sintering chamber, guaranteed that temperature in the furnace chamber is far below the temperature in sintering chamber; Thereby the temperature that has guaranteed the sealing gasket place can be too not high, increased air-tightness.
That the utility model provides and carry out the method for silk screen sintering with this stove, compare with existing method and have the following advantages: one of which, when carrying out sintering; Increase in the sintering networking and respectively net the pressure between the sheet; Make once sintered moulding, with adopt in the existing technology sintering, cold rolling, again sintering or repeatedly circulation compare, reduced energy consumption; Improve operating efficiency, thereby reduced production cost; Its two, before sintering, between each sintering networking, only need to place a separation layer; Reduced present sintering method after firing completion at every turn; Need the cleaning separation layer, before sintering next time, spread the operation of new separation layer more again, not only practiced thrift separation layer; But also reduced matting, improved operating efficiency; Its three because once sintered completion, avoided in the existing method repeatedly sintering and cold rolling, stainless steel is damaged the generation of problem, make that the filtering accuracy of sintering net is more even; Its five because described refrigerating gas is inert gas, increased the intensity and the toughness of sintering net, prolonged the decay resistance of sintering net; Its six because in the 9th step, temperature in 15 minutes from 1080 ℃---reduce to 280 ℃-310 ℃ rapidly for 1120 ℃, spend stainless sensitization zone rapidly, make that stainless (steel) wire sheet intensity and toughness are unaffected; Its six, in the 4th step, feed hydrogen after being heated to 300 ℃, improved the color and luster and the brightness of stainless (steel) wire, also prevented evapotranspiring of stainless steel wire, improved the intensity of finished product.
Description of drawings
Fig. 1 is the structural representation of the silk screen sintering stove that the utility model provided;
Fig. 2 is an A place profile among Fig. 1;
Fig. 3 is the transverse sectional view of Fig. 1.
The specific embodiment
Do further detailed description below in conjunction with accompanying drawing and specific embodiment to silk screen sintering stove that the utility model provided with the method that this stove carries out silk screen sintering.
Like Fig. 1, Fig. 2 and shown in Figure 3; Structural representation for the silk screen sintering stove that the utility model provided; The silk screen sintering stove that the utility model provides comprises the body of heater of being made up of furnace wall 1 and furnace chamber 23, in furnace chamber 2, is provided with the sintering chamber 4 that insulation material 15 is processed; Furnace wall 1 is provided with the vacuum orifice 12 that is connected with vaccum-pumping equipment 26; On furnace wall 1, also be provided with the cooling gas inlet 6, refrigerating gas outlet 7 and the hydrogen inlet 18 that are communicated with sintering chamber 4, in sintering chamber 4, be provided with heater 8, above body of heater 3, be provided with hydraulic mechanism 9; On furnace wall 1, have first through hole 10; Above sintering chamber 4, have second through hole 11 with first through hole, 10 correspondence positions, the hydraulic mandril 5 of hydraulic mechanism 9 passes first through hole 10 and second through hole 11, and hydraulic mandril 5 comprises the heat-resisting push rod 51 that is positioned at the top and the metallic support rod 52 at heat-resisting push rod 51 rears; Heat-resisting push rod 51 is processed by material high temperature resistant and that the coefficient of heat conduction is low, in metallic support rod 52 set inside the cooling duct 53 with metallic support rod 52 external communications is arranged; Between first through hole 10 and metallic support rod 52, be provided with sealing gasket 13; Have pressure sensor 53 in metallic support rod 52 upper ends; The diameter of second through hole 11 is greater than the diameter of heat-resisting push rod 51; In to sintering networking high temperature sintering; Adopt hydraulic mechanism 9 downward roof pressures to be positioned at the material pressing plate on the sintering networking, it is more to make the sintering networking respectively net between the sheet contact point, and the sintering net product intensity that sinters into is big.
Heat-resisting push rod 51 adopts high temperature resistant and material that the coefficient of heat conduction is low is processed; Not only can be high temperature resistant; Also be unlikely to the heat transferred metallic support rod 52 in the sintering chamber; And in metallic support rod 52, be provided with the cooling duct 53 with the external communications of metallic support rod 52, and can effectively reduce the temperature of metallic support rod 52, the temperature around the sealing gasket 13 that making wins is provided with between through hole 10 and the metallic support rod 52 is lower; Prolong the service life of sealing gasket 13, improved the sealing effectiveness of sealing gasket 13.
Since the sealing function of sealing gasket 13, the vacuum when having guaranteed sintering in the body of heater 3, but also the inert gas that has guaranteed in cooling procedure, to fill into is not easy to run out of.
The area of section of heat-resisting push rod 51 is 0.95-0.97 with the ratio of the area of section of second through hole 11; Perhaps be designed to heat-resisting push rod 51 round table-like; The area of section on heat-resisting push rod 51 tops is 0.85-0.87 with the ratio of the area of section of second through hole 11; The area of section of heat-resisting push rod 51 base portions is 0.97-0.98 with the ratio of the area of section of second through hole 11; In the time of can guaranteeing to vacuumize like this that pressure size in the atmospheric pressure in the sintering chamber and the furnace chamber is identical, and guarantee few as much as possible being lost in the furnace chamber of heat in sintering chamber, guaranteed that temperature in the furnace chamber is far below the temperature in sintering chamber; Thereby the temperature that has guaranteed the sealing gasket place can be too not high, increased air-tightness.
Production process is following:
The first step is got the raw materials ready
The multilayer net sheet that needs sintering neatly is stacked together by the technological requirement order, and four angle point solid weldings are fixed on together, process the sintering networking;
Second step, row's net
A plurality of sintering networkings are successively overlayed on the material supporting plate, between each sintering networking, have separation layer,, and the material supporting plate that stacks, sintering networking and material pressing plate packed in the sintering furnace at sintering networking upper ends material pressing plate;
In the 3rd step, vacuumize
With vacuumizing in the sintering furnace, make that the pressure in the sintering furnace is 1.3 * 10
-3Pa;
The 4th step, heat temperature raising
Through heater heating, when the temperature in the sintering chamber rises to 295 ℃, in the sintering chamber, feed hydrogen, make the pressure sintering chamber at 39 Pa, continue to heat the temperature in the sintering chamber is risen to 1300 ℃;
In the 5th step, open the hydraulic mechanism pressurization
The circulating cooling liquid body is injected in cooling duct to metallic support rod, and the primer fluid press mechanism makes heat-resisting push rod lower end roof pressure on the material pressing plate simultaneously, and the pressure size of sintering networking place is 0.5 kilogram/square centimeter;
The 6th step, insulation
Keep-up pressure and temperature 10 hours;
In the 7th step, lower the temperature naturally and remove pressure
Turn off heater, remove pressure simultaneously, slowly be cooled to 1080 ℃;
The 8th step, insulation
In temperature is under 1080 ℃ of states, continues insulation 2 hours;
The 9th step, cooling rapidly
Close the hydrogen inlet valve, feed 1.9 atmospheric refrigerating gases, and discharge, make temperature reduce to 280 ℃ rapidly at 15 minutes through the refrigerating gas outlet through cooling gas inlet;
The tenth step, cooling naturally
Stop to import refrigerating gas, rely on recirculated cooling water to make it slowly be cooled to 35 ℃;
In the 11 step, come out of the stove
Material supporting plate, sintering networking and material pressing plate are shifted out sintering furnace, through negative pressure dust suction, rolling, smoothing, clean, oven dry, check, packing, process the sintering net finished product.
Claims (3)
1. silk screen sintering stove; Comprise the body of heater of forming by furnace wall and furnace chamber; In described furnace chamber, be provided with the sintering chamber that insulation material is processed, described furnace wall is provided with the vacuum orifice that is connected with vaccum-pumping equipment, on described furnace wall, also is provided with the cooling gas inlet, refrigerating gas outlet and the hydrogen inlet that are communicated with said sintering chamber; In said sintering chamber, be provided with heater; It is characterized in that: above said body of heater, be provided with hydraulic mechanism, on said furnace wall, have first through hole, above said sintering chamber, have second through hole with the said first through hole correspondence position; The hydraulic mandril of said hydraulic mechanism passes described first through hole and second through hole
Said hydraulic mandril comprises heat-resisting push rod that is positioned at the top and the metallic support rod that is positioned at said heat-resisting push rod rear; Said heat-resisting push rod is processed by material high temperature resistant and that the coefficient of heat conduction is low, in described metallic support rod set inside the cooling duct with the metallic support rod external communications is arranged; Between said first through hole and said metallic support rod, be provided with sealing gasket; The diameter of said second through hole is greater than the diameter of heat-resisting push rod.
2. silk screen sintering stove according to claim 1 is characterized in that: the area of section of said heat-resisting push rod is 0.95-0.97 with the ratio of the area of section of said second through hole.
3. silk screen sintering stove according to claim 1; It is characterized in that: said heat-resisting push rod is round table-like; The area of section on said heat-resisting push rod top is 0.85-0.87 with the ratio of the area of section of second through hole, and the area of section of said heat-resisting push rod base portion is 0.97-0.98 with the ratio of the area of section of second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202051659U CN202532873U (en) | 2012-05-09 | 2012-05-09 | Screen mesh sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202051659U CN202532873U (en) | 2012-05-09 | 2012-05-09 | Screen mesh sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202532873U true CN202532873U (en) | 2012-11-14 |
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ID=47134052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202051659U Ceased CN202532873U (en) | 2012-05-09 | 2012-05-09 | Screen mesh sintering furnace |
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| Country | Link |
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| CN (1) | CN202532873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469175A (en) * | 2018-03-19 | 2018-08-31 | 通威太阳能（合肥）有限公司 | Silk screen sintering furnace and method for sintering silk screen by using same |
-
2012
- 2012-05-09 CN CN2012202051659U patent/CN202532873U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469175A (en) * | 2018-03-19 | 2018-08-31 | 通威太阳能（合肥）有限公司 | Silk screen sintering furnace and method for sintering silk screen by using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20160414 Decision number of declaring invalidation: 28724 Granted publication date: 20121114 |