CN203109232U - Continuous type multi-tube furnace for pre-sintering molypiece - Google Patents
Continuous type multi-tube furnace for pre-sintering molypiece Download PDFInfo
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- CN203109232U CN203109232U CN 201220723238 CN201220723238U CN203109232U CN 203109232 U CN203109232 U CN 203109232U CN 201220723238 CN201220723238 CN 201220723238 CN 201220723238 U CN201220723238 U CN 201220723238U CN 203109232 U CN203109232 U CN 203109232U
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Abstract
The utility model discloses a continuous type multi-tube furnace for pre-sintering a molypiece. The continuous type multi-tube furnace comprises at least two furnace tubes, wherein each furnace tube is of a straight tube structure, the outer side of each furnace tube is at least encircled by two heating sections, each heating section comprises a corresponding heating wire, the heating wire is coated and wound on the furnace tube, and a plate pushing mechanism is arranged at inlet position of the furnace tube; the number of the furnace tubes is 2-9, the furnace tubes are mutually in parallel arrangement, the number of the heating sections is 2-7, and the heating sections are sequentially and tightly arranged; and each furnace tube and the heating wire which is coated and wound on the heating tube are embedded in a heat insulation layer. The continuous type multi-tube furnace disclosed by the utility model has the advantages that the sintering quality is good, sintering production can be continuously carried out, the production efficiency is high, and convenience is provided for realizing continuous and automatic production.
Description
Technical field
The utility model relates to a kind of molybdenum bar production equipment, relates in particular to the pre-burning freezing of a furnace of molybdenum bar.
Background technology
The molybdenum bar is that raw material compression moulding and high temperature sintering form with the molybdenum powder, but after the compression moulding of molybdenum bar, the intensity of its compacting blank is lower, is unfavorable for transhipment or the shove charge of later process; Suppress base bar inside simultaneously and also have some slight void, can form the layering of molybdenum bar interior tissue behind the high temperature sintering, directly influence the end product quality of molybdenum bar.Therefore in the actual production process of molybdenum bar, mostly can be after compression moulding, carry out the presintering of blank before the high temperature sintering, to improve blank intensity and electric conductivity, improve or remove the blank internal void, and remove part of impurity elements.
Present presintering method is that compacting base bar is placed charging tray, and the high-temperature area of directly putting into the furnace chamber of pre-burning freezing of a furnace carries out presintering.Because the fragility of molybdenum, base bar suddenly cold and hot in addition, instantaneous temperature difference is very big, often causes base bar fracture phenomenon, directly influences yield rate.Because existing presintering method can only be carried out dress base and the sintering of a charging tray at every turn, productivity ratio is low, is unfavorable for carrying out continuously of molybdenum bar production again.Therefore, improve molybdenum bar production efficiency and yield rate, reduction base bar fracture rate, the problem that need solve for those skilled in the art.
The utility model content
At the existing in prior technology deficiency, technical problem to be solved in the utility model provides the molybdenum bar presintering continous way multi-tube furnace that a kind of presintering quality is good, the energy serialization is produced.
In order to solve the problems of the technologies described above, molybdenum bar of the present utility model presintering continous way multi-tube furnace, comprise boiler tube, described boiler tube is straight tube structure and has two at least, at least be surrounded by two sections bringing-up sections in the outside of boiler tube, each bringing-up section includes corresponding heating wire, and this heating wire is wrapped on the boiler tube, is provided with push-plate mechanism in the import department of boiler tube.
In said structure, because boiler tube adopts many straight tube structure, so just can once preheat several simultaneously and suppress the base bar, and straight tube structure makes this preheating to carry out continuously to have high production efficiency again.Again because the boiler tube outside is surrounded by the multistage bringing-up section successively, and each bringing-up section is all to there being heating wire, adding the hot arc structure on the one hand makes boiler tube form a plurality of heating regions along its length, compacting base bar in boiler tube successively through progressively being warmed up to the highest temperature, the process of cooling progressively again, variations in temperature is mild, has avoided the generation of base bar fracture phenomenon; The smooth variation of this temperature also is conducive to suppress filling and the elimination of base bar mesopore on the other hand, and the presintering quality is good, thereby has improved the end product quality of molybdenum bar.Adopting heating wire is that heating element heater is conducive to accurate, the control automatically to heating-up temperature.Also owing to the import department at boiler tube is provided with push-plate mechanism, this push-plate mechanism has guaranteed continuous, the propelling automatically of base bar.
Preferred embodiment of the present utility model, described boiler tube has 2-9, and each boiler tube is arranged in parallel, and described bringing-up section has 2-7 sections, and each bringing-up section is adjacent setting successively; Each boiler tube and the heating wire that is wrapped on the boiler tube are embedded in the insulation layer.Boiler tube connection and reasonable arrangement in this structure, heating are evenly mild more, have the higher thermal efficiency.
Further embodiment of the present utility model, described push-plate mechanism is hydraulic cylinder or cylinder.Adopt general dynamic elements such as hydraulic cylinder or cylinder, be convenient to installation and maintenance, operation is also very reliable during use.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model molybdenum bar presintering continous way multi-tube furnace is described further.
Fig. 1 is the principal section structural representation of a kind of specific embodiment of the utility model molybdenum bar presintering continous way multi-tube furnace;
Fig. 2 is the structural representation of the A-A section of structure shown in Figure 1.
Among the figure, 1-boiler tube, 2-the 5 bringing-up section, the 3-thermal insulation layer of preserving moisture, 4-the 4 bringing-up section, 5-the 3 bringing-up section, 6-the 2 bringing-up section, 7-heating wire, 8-the 7 bringing-up section, 9-carrier strip boat, 10-push-plate mechanism.
The specific embodiment
Use in the continous way multi-tube furnace in Fig. 1, molybdenum bar presintering shown in Figure 2, boiler tube 1 has 4, and every boiler tube 1 all is straight tube structure, and these 4 boiler tubes arrange mutually abreast with interval.Boiler tube 1 from import department (right side) to the exit adjacent the 1st bringing-up section 8, the 2nd bringing-up section 6, the 3rd bringing-up section 5, the 4th bringing-up section 4 and 2 five bringing-up sections of slender acanthopanax hot arc of being provided with successively, each bringing-up section all is surrounded on the outside of boiler tube 1, each bringing-up section includes corresponding heating wire 7, this heating wire 7 is wrapped on the outside of boiler tube 1, and boiler tube 1 and the heating wire 7 that is wrapped in outside the boiler tube are embedded in the insulation layer 3 of bringing-up section.Insulation layer 3 adopts heat preserving and insulating material commonly used.
Arranging some carrier strip boats 9 along the pipe range direction is adjacent successively in the tube chamber of each boiler tube 1, carrier strip boat 9 is used for bearing compacting base bar.Import department at each boiler tube 1 is provided with push-plate mechanism 10, in order to carrier strip boat 9 is pushed in the tube chamber of boiler tube 1.This push-plate mechanism 10 is cylinder.When the piston rod of cylinder stretches out, promote carrier strip boat 9 in the tube chamber slides forwards reach of boiler tube 1.
During use, this continous way multi-tube furnace can improve sintering efficient greatly simultaneously from the charging port propelling 4 dish carrier strip boats 9 of each boiler tube 1.Simultaneously, improve gradually since the 1st bringing-up section temperature, the 1st bringing-up section temperature is 500 ℃ and rises to 650 ℃ to the 2nd bringing-up section, the 3rd bringing-up section is raised to 800 ℃, and the 4th bringing-up section is raised to 900 ℃, and the 5th bringing-up section cools to 600 ℃ and allow after the base bar cools off gradually then, again from the discharging port discharging of boiler tube 1, the base bar is through a sintering process that heats up gradually like this, and it is low to reach the fracture rate, the effect that production efficiency is high.
Above-mentionedly only enumerated a kind of preferred embodiment of the present utility model, but the utility model is not limited thereto, many improvement and conversion can also be arranged.At first the radical of boiler tube 1 is not limited to 4, can select to arrange in 2-9 according to production requirement; Bringing-up section also is not limited to 5, also can select to arrange in 2-7 sections; Push-plate mechanism 10 can also be hydraulic cylinder or pinion and rack except adopting cylinder.Etc..These conversion and improvement all fall in the protection domain of the present utility model.
Claims (4)
1. molybdenum bar presintering continous way multi-tube furnace, comprise boiler tube (1), it is characterized in that: described boiler tube (1) is straight tube structure and has two at least, at least be surrounded by two sections bringing-up sections in the outside of boiler tube (1), each bringing-up section includes corresponding heating wire (7), this heating wire (7) is wrapped on the boiler tube (1), is provided with push-plate mechanism (10) in the import department of boiler tube (1).
2. molybdenum bar according to claim 1 presintering continous way multi-tube furnace, it is characterized in that: described boiler tube (1) has 2-9, and each boiler tube (1) is arranged in parallel, and described bringing-up section has 2-7 sections, and each bringing-up section is adjacent setting successively; Each boiler tube (1) and the heating wire (7) that is wrapped on the boiler tube (1) are embedded in the insulation layer (3).
3. molybdenum bar according to claim 2 presintering continous way multi-tube furnace, it is characterized in that: described boiler tube (1) has 4, and described bringing-up section has 5 sections.
4. according to claim 1,2 or 3 described molybdenum bar presintering continous way multi-tube furnaces, it is characterized in that: described push-plate mechanism (10) is hydraulic cylinder or cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723238 CN203109232U (en) | 2012-12-25 | 2012-12-25 | Continuous type multi-tube furnace for pre-sintering molypiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723238 CN203109232U (en) | 2012-12-25 | 2012-12-25 | Continuous type multi-tube furnace for pre-sintering molypiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203109232U true CN203109232U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220723238 Expired - Fee Related CN203109232U (en) | 2012-12-25 | 2012-12-25 | Continuous type multi-tube furnace for pre-sintering molypiece |
Country Status (1)
| Country | Link |
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| CN (1) | CN203109232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914016A (en) * | 2017-11-08 | 2018-04-17 | 金堆城钼业股份有限公司 | A kind of production method of molybdenum bar |
-
2012
- 2012-12-25 CN CN 201220723238 patent/CN203109232U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914016A (en) * | 2017-11-08 | 2018-04-17 | 金堆城钼业股份有限公司 | A kind of production method of molybdenum bar |
| CN107914016B (en) * | 2017-11-08 | 2020-12-15 | 金堆城钼业股份有限公司 | Production method of molybdenum strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20141225 |
|
| EXPY | Termination of patent right or utility model |