CN204145779U - A kind of silicon carbide ceramics heated protective sleeve pipe - Google Patents
A kind of silicon carbide ceramics heated protective sleeve pipe Download PDFInfo
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- CN204145779U CN204145779U CN201420523158.2U CN201420523158U CN204145779U CN 204145779 U CN204145779 U CN 204145779U CN 201420523158 U CN201420523158 U CN 201420523158U CN 204145779 U CN204145779 U CN 204145779U
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Abstract
A kind of silicon carbide ceramics heated protective sleeve pipe, comprise casing pipe (1), it is characterized in that: described casing pipe (1) is cylindrical tube structure, the bottom of casing pipe (1) is provided with sleeve bottom block (2), sleeve bottom block (2) is connected by the bottom of connecting thread (4) with casing pipe (1), the internal cavities formed between casing pipe (1) and sleeve bottom block (2) is heating bore (3), the utility model tube wall thickness and even density, shaping rear product stripping is convenient, finished product rate is high, resistance to elevated temperatures is good, in use metal liquid can not flow in heating bore from the connection gap between casing pipe and sleeve bottom block, damage can not be caused to Heating Electron components and parts, long service life.
Description
Technical field
The utility model relates to a kind of heated protective sleeve pipe, particularly relates to a kind of silicon carbide ceramics heated protective sleeve pipe, belongs to silicon carbide ceramic product technical field.
Background technology
Traditional indirect mainly uses metal or alloy as the radiation heating tube of heating system, but the maximum operation (service) temperature of various metal radiation pipe only has 1000 DEG C up to now, and resistance to elevated temperatures is not good.And use the silicon carbide ceramics with good heat conductive performance can bring up to less than 1500 DEG C as radiation heating sleeve pipe, can use in the metal liquid such as hydrochloric acid, nitric acid, sulfuric acid and aluminium, lead, tin, zinc, copper for a long time.
The general length of silicon carbide ceramics heating muff is at about 1000mm, and external diameter is at more than 80mm, and silicon carbide ceramics heating muff one end closes and length is long, and therefore manufacture difficulty is larger.The silicon carbide ceramics heating muff used in the market generally adopts ramming process, and this kind of production technology can realize the production of heating muff, but due to ramming process body Density inhomogeneity, very easily causes unstable product quality.Market also has and adopts the silicon carbide ceramics heating muff of one-time cast-forming, this type of heating muff product density is comparatively even, but body wall thickness exists became uneven affects product quality, and the more difficult rate of finished products of shaping rear product stripping is low.
As Chinese patent notification number is: CN 2840577Y; the day for announcing is: the utility model patent on November 22nd, 2006 discloses a kind of heater with nonmetal protective sleeve; at upper outside or the integral outer installation protective jacket of heater outer tube; and connect fixing; during heating liquid, liquid level directly contacts with protective jacket, thus avoids liquid level directly and the contact of heater outer tube.The defect of this device is: one end of heating muff closes and length is longer, is not easy to machine-shaping, and shaping rear product stripping difficulty, and resistance to elevated temperatures is not good.
Summary of the invention
The purpose of this utility model be for existing silicon carbide ceramics heating muff one end close and length is longer; be not easy to machine-shaping; tube wall became uneven; and shaping rear product stripping difficulty, the defect that resistance to elevated temperatures is not good and deficiency, provide a kind of tube wall thickness and even density; shaping rear product stripping is convenient; finished product rate is high, and resistance to elevated temperatures is good, a kind of silicon carbide ceramics heated protective sleeve pipe of long service life.
For achieving the above object, technical solution of the present utility model is: a kind of silicon carbide ceramics heated protective sleeve pipe, comprise casing pipe, described casing pipe is cylindrical tube structure, the bottom of casing pipe is provided with sleeve bottom block, the periphery of sleeve bottom block is provided with screw thread, in the bottom interior wall of casing pipe, correspondence is provided with connecting thread, sleeve bottom block is connected with the bottom of casing pipe by connecting thread, the internal cavities formed between casing pipe and sleeve bottom block is heating bore, the upper port excircle of casing pipe is provided with mouth of pipe boss.
Described casing pipe and sleeve bottom block adopt silicon nitride combined silicon carbide pottery to make.
Carborundum mud is filled with in gap between described casing pipe and sleeve bottom block.
The wall thickness of described casing pipe is 10 millimeters-60 millimeters, and the draw ratio of casing pipe is 20:1-10:1.
The beneficial effects of the utility model are:
1, the utility model casing pipe is cylindrical tube structure, the bottom of casing pipe is provided with sleeve bottom block, sleeve bottom block is connected with the bottom of casing pipe by connecting thread, carborundum mud is filled with in gap between casing pipe and sleeve bottom block, make casing pipe and sleeve bottom block define an entirety, obturation effect is good.
2, the utility model tube wall thickness and even density, shaping rear product stripping is convenient, finished product rate is high, resistance to elevated temperatures is good, in use metal liquid can not flow in heating bore from the connection gap between casing pipe and sleeve bottom block, damage can not be caused, long service life to Heating Electron components and parts.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
In figure: casing pipe 1, sleeve bottom block 2, heating bore 3, connecting thread 4, carborundum mud 5, mouth of pipe boss 6.
Embodiment
Illustrate below in conjunction with accompanying drawing and with embodiment, the utility model to be described in further detail.
See Fig. 1, Fig. 2, a kind of silicon carbide ceramics heated protective sleeve pipe of the present utility model, comprise casing pipe 1, described casing pipe 1 is cylindrical tube structure, the bottom of casing pipe 1 is provided with sleeve bottom block 2, the periphery of sleeve bottom block 2 is provided with screw thread, in the bottom interior wall of casing pipe 1, correspondence is provided with connecting thread 4, sleeve bottom block 2 is connected by the bottom of connecting thread 4 with casing pipe 1, the internal cavities formed between casing pipe 1 and sleeve bottom block 2 is heating bore 3, the upper port excircle of casing pipe 1 is provided with mouth of pipe boss 6.
Described casing pipe 1 and sleeve bottom block 2 adopt silicon nitride combined silicon carbide pottery to make.
Carborundum mud 5 is filled with in gap between described casing pipe 1 and sleeve bottom block 2.
The wall thickness of described casing pipe 1 is 10 millimeters-60 millimeters, and the draw ratio of casing pipe 1 is 20:1-10:1.
See Fig. 1, casing pipe 1 is the cylindrical tube structure that silicon nitride combined silicon carbide pottery is made, casing pipe 1 adopts silicon nitride combined silicon carbide ceramic material, have high temperature resistant, elevated temperature strength is high, heat conductivility and the advantage such as antioxygenic property is good, thermal coefficient of expansion is low, is that desirable heating muff makes material.The wall thickness of casing pipe 1 is 10 millimeters-60 millimeters, and the draw ratio of casing pipe 1 is 20:1-10:1, and casing pipe 1 manufactures with the body form of both ends open, is convenient to machine-shaping, and shaping rear product stripping is also very convenient.The upper port excircle of casing pipe 1 is provided with mouth of pipe boss 6, is convenient to shelve and fix.
The bottom of casing pipe 1 is provided with sleeve bottom block 2, sleeve bottom block 2 is screwed circular block on periphery, in the bottom interior wall of casing pipe 1, correspondence is provided with connecting thread 4, and sleeve bottom block 2 is connected by the bottom of connecting thread 4 with casing pipe 1.In order to improve the tightness be connected between casing pipe 1 with sleeve bottom block 2, improve obturation effect simultaneously, be filled with carborundum mud 5 in gap between casing pipe 1 and sleeve bottom block 2, so just make casing pipe 1 and sleeve bottom block 2 define an entirety.The internal cavities formed between casing pipe 1 and sleeve bottom block 2 is heating bore 3, Heating Electron components and parts are installed in heating bore 3, in use metal liquid can not flow in heating bore 3 from the connection gap between casing pipe 1 and sleeve bottom block 2, can not cause damage to Heating Electron components and parts.
Manufacturing process of the present utility model is as follows: the making mould first getting out casing pipe 1 and sleeve bottom block 2 respectively, then utilize planetary batch mixer to stir in silicon carbide sand, metallic silicon power, clay, micropowder bonded agent, glue etc., mixing time is 30 minutes; Be placed on by making mould on vibrating casting forming machine fixing subsequently, start forming machine, and slowly added in mould by dispenser by mixed material, the base substrate of forming leaves standstill sloughed mould after 1 hour.Be placed in drying room by base substrate again, be warming up to 60 DEG C by certain heating curve, casing pipe 1, sleeve bottom block 2 carborundum mud 3, after 24 hours, are bonded as one by shown in Fig. 2 by 60 DEG C of insulations; And then the base substrate bondd is put into baking room, be warming up to 120 DEG C by certain heating curve, 120 DEG C are incubated 12 hours; Finally the base substrate of drying is loaded in large high-temperature nitriding furnace, burn till nitrogenize through 1430 DEG C, temperature retention time 12 hours, silicon carbide ceramics heating muff of the present utility model can be obtained.
Claims (4)
1. a silicon carbide ceramics heated protective sleeve pipe, comprise casing pipe (1), it is characterized in that: described casing pipe (1) is cylindrical tube structure, the bottom of casing pipe (1) is provided with sleeve bottom block (2), the periphery of sleeve bottom block (2) is provided with screw thread, in the bottom interior wall of casing pipe (1), correspondence is provided with connecting thread (4), sleeve bottom block (2) is connected by the bottom of connecting thread (4) with casing pipe (1), the internal cavities formed between casing pipe (1) and sleeve bottom block (2) is heating bore (3), the upper port excircle of casing pipe (1) is provided with mouth of pipe boss (6).
2. a kind of silicon carbide ceramics heated protective sleeve pipe according to claim 1, is characterized in that: described casing pipe (1) and sleeve bottom block (2) adopt silicon nitride combined silicon carbide pottery to make.
3. a kind of silicon carbide ceramics heated protective sleeve pipe according to claim 1, is characterized in that: be filled with carborundum mud (5) in the gap between described casing pipe (1) and sleeve bottom block (2).
4. a kind of silicon carbide ceramics heated protective sleeve pipe according to claim 1, it is characterized in that: the wall thickness of described casing pipe (1) is 10 millimeters-60 millimeters, the draw ratio of casing pipe (1) is 20:1-10:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523158.2U CN204145779U (en) | 2014-09-12 | 2014-09-12 | A kind of silicon carbide ceramics heated protective sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523158.2U CN204145779U (en) | 2014-09-12 | 2014-09-12 | A kind of silicon carbide ceramics heated protective sleeve pipe |
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| CN204145779U true CN204145779U (en) | 2015-02-04 |
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| CN201420523158.2U Active CN204145779U (en) | 2014-09-12 | 2014-09-12 | A kind of silicon carbide ceramics heated protective sleeve pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106304443A (en) * | 2016-09-12 | 2017-01-04 | 芜湖市旭辉电工新材料有限责任公司 | A kind of roofing snow melt special temperature selflimiting electric tracing band |
| CN106793192A (en) * | 2016-12-14 | 2017-05-31 | 宜兴市华井科技有限公司 | A kind of heater protecting pipe |
-
2014
- 2014-09-12 CN CN201420523158.2U patent/CN204145779U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106304443A (en) * | 2016-09-12 | 2017-01-04 | 芜湖市旭辉电工新材料有限责任公司 | A kind of roofing snow melt special temperature selflimiting electric tracing band |
| CN106793192A (en) * | 2016-12-14 | 2017-05-31 | 宜兴市华井科技有限公司 | A kind of heater protecting pipe |
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