CN104513063A - High-temperature resistant, smooth, and fine graphite tube - Google Patents
High-temperature resistant, smooth, and fine graphite tube Download PDFInfo
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- CN104513063A CN104513063A CN201310446319.2A CN201310446319A CN104513063A CN 104513063 A CN104513063 A CN 104513063A CN 201310446319 A CN201310446319 A CN 201310446319A CN 104513063 A CN104513063 A CN 104513063A
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Abstract
The invention discloses a high-temperature resistant, smooth, and fine graphite tube. The graphite tube is characterized by being composed of the following components in parts by weight: 50 to 60 parts of nano grade graphite powder, 10 to 15 parts of mid-temperature asphalt, 10 to 15 parts of high-temperature resistant mineral powder or quartz powder, 5 to 8 parts of borax, 3 to 5 parts of boric acid, 5 to 10 parts of sodium carboxymethylcellulose, and 3 to 5 parts of composite dispersant. The manufacturing method of the graphite tube comprises the following steps: (1) raw material pretreatment; (2) material blending and moulding; (3) roasting; (4) impregnation. A composite dispersant is added in order to enlarge the temperature application range and lubricating effect. Sodium carboxymethylcellulose is added so as to increase the adhesive property of paint and at the same time the raw material can be evenly mixed. The liquid epoxy resin can improve the fineness of the paint. The prepared graphite tube does not have the problems such as bubbling, cracking, explosion, and the like, and thus has a good work performance and long service life.
Description
technical field:
The present invention relates to the fine and smooth carbon tube of a kind of high temperature resistant lubrication.
background technology:
Carbon tube is the graphite product be pressed into by special process by high purity graphite powder.Divide by type of heating: longitudinal heated graphite pipe, Transverse Heated carbon tube; Divide by performance: ordinary graphite tube (non-pyrolytic) is applicable to low temperature (≤2000 DEG C) atomize element as silver, cadmium, lead; Coating graphite tube is applicable to basic, normal, high temperature (>2500 DEG C) atomize element; During platform-graphite tube is applicable to, low temperature (≤2400 DEG C) atomize element.
The lubricant used in oiling system at present, is all the basic oils with mineral oil or synthetic, adds the oiliness graphite such as graphite and other additive in addition in mineral oil.These lubricants, because be take mineral oil as medium, at high temperature easily decompose and burning; At high temperature graphite will lose its wear resisting property simultaneously, cause temperature limit to diminish, and cost be high, not have repairing effect, be unfavorable for large-scale application to the perished surface of equipment.
Along with the fast development of foundry industry, more and more higher to the requirement of casting workpiece quality, the requirement of Industrial materials is also strengthened thereupon, generally all necessarily requires that quality is homogeneous, cohesiveness is excellent, water-fast thermotolerance is strong, and under normal temperature and high pressure stable in properties.
Existing carbon tube, exist bubble, easily crack, the problem such as explosion, serviceability, working life are all undesirable.It is long how to produce a kind of life-span, makes the Homogeneous phase mixing of material, cohesiveness is strong, high temperature resistant, carbon tube that lubricity is good is the technical problem to be solved in the present invention.
summary of the invention:
The present invention is in order to overcome the problems of the prior art, and provide a kind of high temperature resistant lubrication fine and smooth carbon tube, it is characterized in that, each component is composed as follows according to weight part:
Nanoscale graphite powder 50-60 part;
Mid-temperature pitch 10-15 part;
High temperature resistant mineral micro powder or silica powder 10-15 part;
Borax 5-8 part;
Boric acid 3-5 part;
Xylo-Mucine mixture 5-10 part;
Composite dispersing agent 3-5 part.
This carbon tube making method comprises the steps:
(1) raw materials pretreatment: add water high temperature resistant mineral micro powder or silica powder, borax, boric acid, composite dispersing agent 100-150% stirring at normal temperature 60-70min;
(2) forming ingredient: after Graphite Powder 99, pitch, Xylo-Mucine mixture and said mixture being mixed, put into forming mould extrusion molding;
(3) roasting: formed pipe is put into stoving oven set temperature 150-160 DEG C, reaction 30-40min, passes into nitrogen or argon gas, is warming up to 1150-1170 DEG C, and reaction 3-5min, is cooled to rapidly 750-770 DEG C;
(4) flood: the formed pipe through calcination process is dried further, puts into liquid-state epoxy resin and flood, then heat-treat, obtain finished product.
Above-mentioned one the is high temperature resistant fine and smooth carbon tube of lubrication, is characterized in that, composite dispersing agent presses 1: 1 synthesis by sodium laurylsulfonate and fat by sour sorb is smooth.
Above-mentioned one the is high temperature resistant fine and smooth carbon tube of lubrication, it is characterized in that, the moiety of Xylo-Mucine mixture and weight ratio thereof are: Xylo-Mucine 3-5, water 100.
Above-mentioned one the is high temperature resistant fine and smooth carbon tube of lubrication, is characterized in that, in described step (4), drying and processing temperature is 150-160 DEG C, and the drying and processing time is 22-24h; The dip treating time is 7-8h; Heat treated temperature is 150-160 DEG C, and heat treatment time is 12-14h.
The beneficial effect of the invention:
Achieve can automatically repair equipment perished surface by adding composite dispersing agent, improve temperature limit and lubricant effect.Adding of Xylo-Mucine mixture, raw-material suspension effect in coating can be improved, be convenient to raw-material Homogeneous phase mixing, improve the cohesiveness of coating, and, also comprise liquid-state epoxy resin in the present invention, this liquid-state epoxy resin can not only improve the exquisiteness of coating, can also strengthen the cohesiveness of coating.There is not the problems such as foaming, crackle, explosion in the carbon tube that the present invention obtains, achieves good serviceability and working life.
Embodiment
Embodiment 1:
(1) raw materials pretreatment: by silica powder 15 parts, borax 5 parts, boric acid 5 parts, to be added water 100 parts of stirring at normal temperature 60min by the smooth composite dispersing agent 5 parts by 1: 1 synthesis of sour sorb by sodium laurylsulfonate and fat;
(2) forming ingredient: by 50 parts, nanoscale graphite powder, mid-temperature pitch 10 parts, Xylo-Mucine: after 10 parts, the mixture of water=5:100 and said mixture mix, put into forming mould extrusion molding;
(3) roasting: formed pipe is put into stoving oven set temperature 150 DEG C, reaction 30min, passes into nitrogen, is warming up to 1150 DEG C, and reaction 3min, is cooled to rapidly 750 DEG C;
(4) flood: be 150 DEG C by the formed pipe control temperature through calcination process, drying and processing 22h; Further oven dry, puts into liquid-state epoxy resin and floods 7h, and then control temperature is 150 DEG C, and thermal treatment 12 obtains finished product.
Embodiment 2:
(1) raw materials pretreatment: by silica powder 15 parts, borax 5 parts, boric acid 5 parts, to be added water 150 parts of stirring at normal temperature 70min by the smooth composite dispersing agent 5 parts by 1: 1 synthesis of sour sorb by sodium laurylsulfonate and fat;
(2) forming ingredient: by 50 parts, nanoscale graphite powder, mid-temperature pitch 15 parts, Xylo-Mucine: after 5 parts, the mixture of water=5:100 and said mixture mix, put into forming mould extrusion molding;
(3) roasting: formed pipe is put into stoving oven set temperature 160 DEG C, reaction 40min, passes into nitrogen or argon gas, is warming up to 1170 DEG C, and reaction 5min, is cooled to rapidly 770 DEG C;
(4) flood: be 160 DEG C by the formed pipe control temperature through calcination process, drying and processing 24h; Further oven dry, puts into liquid-state epoxy resin and floods 8h, and then control temperature is 160 DEG C, and thermal treatment 14h obtains finished product.
Claims (4)
1. the fine and smooth carbon tube of high temperature resistant lubrication, is characterized in that, each component is composed as follows according to weight part:
Nanoscale graphite powder 50-60 part;
Mid-temperature pitch 10-15 part;
High temperature resistant mineral micro powder or silica powder 10-15 part;
Borax 5-8 part;
Boric acid 3-5 part;
Xylo-Mucine mixture 5-10 part;
Composite dispersing agent 3-5 part;
This carbon tube making method comprises the steps:
(1) raw materials pretreatment: add water high temperature resistant mineral micro powder or silica powder, borax, boric acid, composite dispersing agent 100-150% stirring at normal temperature 60-70min;
(2) forming ingredient: after Graphite Powder 99, pitch, Xylo-Mucine mixture and said mixture being mixed, put into forming mould extrusion molding;
(3) roasting: formed pipe is put into stoving oven set temperature 150-160 DEG C, reaction 30-40min, passes into nitrogen or argon gas, is warming up to 1150-1170 DEG C, and reaction 3-5min, is cooled to rapidly 750-770 DEG C;
(4) flood: the formed pipe through calcination process is dried further, puts into liquid-state epoxy resin and flood, then heat-treat, obtain finished product.
2. the fine and smooth carbon tube of a kind of high temperature resistant lubrication as claimed in claim 1, is characterized in that, composite dispersing agent presses 1: 1 synthesis by sodium laurylsulfonate and fat by sour sorb is smooth.
3. the fine and smooth carbon tube of a kind of high temperature resistant lubrication as claimed in claim 1, is characterized in that, the moiety of Xylo-Mucine mixture and weight ratio thereof are: Xylo-Mucine 3-5, water 100.
4. the fine and smooth carbon tube of a kind of high temperature resistant lubrication as claimed in claim 1, is characterized in that, in described step (4), drying and processing temperature is 150-160 DEG C, and the drying and processing time is 22-24h; The dip treating time is 7-8h; Heat treated temperature is 150-160 DEG C, and heat treatment time is 12-14h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446319.2A CN104513063A (en) | 2013-09-27 | 2013-09-27 | High-temperature resistant, smooth, and fine graphite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446319.2A CN104513063A (en) | 2013-09-27 | 2013-09-27 | High-temperature resistant, smooth, and fine graphite tube |
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| CN104513063A true CN104513063A (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310446319.2A Pending CN104513063A (en) | 2013-09-27 | 2013-09-27 | High-temperature resistant, smooth, and fine graphite tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365692A (en) * | 2016-08-30 | 2017-02-01 | 湖南南方搏云新材料股份有限公司 | Low-density carbon/carbon heat preservation material oxidation-resistant coating and preparation process thereof |
| CN114736038A (en) * | 2022-02-24 | 2022-07-12 | 博慧检测技术(厦门)有限公司 | Preparation method of full pyrolysis metal coating graphite tube |
-
2013
- 2013-09-27 CN CN201310446319.2A patent/CN104513063A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365692A (en) * | 2016-08-30 | 2017-02-01 | 湖南南方搏云新材料股份有限公司 | Low-density carbon/carbon heat preservation material oxidation-resistant coating and preparation process thereof |
| CN114736038A (en) * | 2022-02-24 | 2022-07-12 | 博慧检测技术(厦门)有限公司 | Preparation method of full pyrolysis metal coating graphite tube |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150415 |
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| WD01 | Invention patent application deemed withdrawn after publication |