CN1302705A - Technology for making composite cast tube with liner of microcrystal glass - Google Patents
Technology for making composite cast tube with liner of microcrystal glass Download PDFInfo
- Publication number
- CN1302705A CN1302705A CN 00136832 CN00136832A CN1302705A CN 1302705 A CN1302705 A CN 1302705A CN 00136832 CN00136832 CN 00136832 CN 00136832 A CN00136832 A CN 00136832A CN 1302705 A CN1302705 A CN 1302705A
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- China
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- cast tube
- mold
- oxide
- sytull
- microcrystal glass
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- Coating By Spraying Or Casting (AREA)
Abstract
A composite cast tube with lining of microcrystal glass is made up through preparing microcrystal glass particles, pouring the molten iron or steel in casting mould on centrifugal machine, uniformly rotating while uniformly spraying the microcrystal glass particles into casting mould, stopping machine and taking out cast tube, crystalline annealing and cooling. Its advantages are good anticorrosion and antiwear performance, easy linking, and suitable for long-distance conveying.
Description
The present invention relates to the preparation method of the compound cast tube of a kind of devitrified glass lining, belong to casting and inorganic material coating field.
Departments such as oil, chemical industry, mine and metallurgy need anti-corrosion, wear-resisting in a large number conveyance conduit, and existing metal pipe is difficult to satisfy above-mentioned requirements.For example, the transmission of the conveying of fly ash in electric power plant, oil and rock gas all needs to have the pipeline material of higher anti-corrosion, wear-resisting property.If select the superior Stainless Steel Tube of corrosion resisting property for use, its wear resistance is difficult to meet the demands; If select the SHS ceramic-lined composite steel tube for use, though its wear-resisting property excellence, because the easily existence of erosion phase in crackle, connection pore and the ceramic layer is difficult to satisfy anti-corrosion requirement.Sytull has good anti-corrosion, wear resistance, and making the devitrified glass lining composite pipe is the effective ways that improve relevant life of product.But, because the temperature difference of the sytull of fusion and steel pipe is bigger, directly also there are many technical problems at steel pipe internal-surface centrifugal pressure casting glass, cost of production is higher.
The objective of the invention is to propose the preparation method of the compound cast tube of a kind of devitrified glass lining, utilize centrifugal casting to prepare the waste heat and the centrifugal force of cast tube, make the microcrystalline glass powder slag charge directly form fine and close sytull coating, to obtain the compound cast tube of anti-corrosion, wear-resisting devitrified glass lining at cast tube internal surface sintering.
The preparation method of the compound cast tube of devitrified glass lining that the present invention proposes may further comprise the steps:
(1) prepare the sytull slag charge by following quality proportioning, its granularity is 6～200 orders.
Silica sand unslaked lime aluminium oxide potassium oxide+sodium oxide titanium oxide zine oxide
58～64％ 10～20％ 5～10％ 3～12％ 0～4％ 0～8％
(2) with 1400～1600 ℃ the molten hot metal or the mold of molten steel injection centrifuge, and its speed with 600～2000 rev/mins is at the uniform velocity rotated, after molten iron liquid injects 0.5～1 minute, in mold, evenly spray sytull slag body with another conduit, the addition of glass powder and the weight ratio of cast tube are 0.05～0.4: 1, and the axial speed of related movement of mold and inlet is 5～50 cm per minute.
(3) centrifuge continues to keep constant speed 5～15 minutes, slows down gradually then.
(4) take off cast tube after the shutdown, and insulation was carried out subsequent annealing in 25～50 minutes under 700～950 ℃, was cooled to room temperature, can obtain the compound cast tube of devitrified glass lining of the present invention.
The double-layer structure that has cast tube+sytull with the compound cast tube of method preparation of the present invention.Method of the present invention also is applicable to the devitrified glass lining or the glass-lined of other chemical composition of preparation.Prepared glass-ceramic layer consistency height, corrosion resistance is good.Method of the present invention unites two into one the preparation of cast tube and sytull coating, saves the energy, and technology is simple.The present invention also is applicable to preparation taper, cydariform or stepped shaft devitrified glass lining pipeline.
The compound cast tube of the devitrified glass lining of manufacturing of the present invention has good anti-corrosion, wear-resisting property.The anti-external impact of product and be easy to connect is suitable for long-distance pipe and carries.Compound cast tube crushing strength is 250-320MPa, and the hardness of glass-ceramic layer is not less than 1000HV, and apparent porosity is lower than 5%.Under the room temperature, the corrosion weight loss in 10%HCl is 0.0023mg/cm
2.h～0.00047mg/cm
2.h, than low about 2 orders of magnitude of stainless steel.
The invention will be further described below in conjunction with example.
Embodiment 1:
With composition is silica sand (64%), unslaked lime (10%), soda ash (6%), potassium carbonate (6%), aluminium oxide (7%), titanium dioxide (3%) and zine oxide (4%) but the crystallized glass slag charge be crushed to the 6-200 order, stand-by; Start centrifuge to 950 rev/min, under rotating conditions at the uniform velocity, with conduit 1400 ℃ fusion grey cast iron water being injected internal diameter is the centrifuge mold of 148mm, long 3000mm, and the speed that moves axially of mold is 10 cm per minute.After molten iron began to cast 0.5 minute, with another conduit at established cast tube inner-wall spraying glass powder, under cast tube waste heat and action of centrifugal force, glass powder sintering, crystallization form thick even, the fine and close devitrified glass lining of an about 3mm at the cast tube inwall.Molten iron and microcrystalline glass powder continuous pouring and the compound cast tube that sprays until formation 3000mm length.Kept high speed rotating 10 minutes, and slowed down gradually then.Take off cast tube after the shutdown and be incubated 30 minutes, be chilled to room temperature and can obtain the compound cast tube of sytull at 900 ℃.8mm, sytull bed thickness 3mm behind the cast tube wall, at the glass-ceramic layer any surface finish flawless that the cast tube inwall forms, hardness is 1150HV.The crushing strength of devitrified glass lining cast tube is 270MPa, and the corrosion weight loss under the room temperature in 10%HCl is 0.0027mg/cm
2.h.
Embodiment 2:
With composition is silica sand (58%), unslaked lime (15%), soda ash (8%), aluminium oxide (10%), titanium dioxide (3%) and zine oxide (6%) but the crystallized glass slag charge in pebble mill, be crushed to 200 orders, stand-by; Start centrifuge to 850 rev/min, under rotating conditions at the uniform velocity, with conduit 1500 ℃ fusion spheroidal graphite cast iron water being injected internal diameter is the centrifuge mold of 318mm, long 3000mm, and the speed that moves axially of mold is 10 cm per minute.After molten iron began to cast 0.5 minute, with another conduit at established cast tube inner-wall spraying glass powder, under cast tube waste heat and action of centrifugal force, glass powder sintering, crystallization form thick even, the fine and close devitrified glass lining of an about 2.5mm at the cast tube inwall.Molten iron and microcrystalline glass powder continuous pouring and sprinkling are until forming the long compound cast tube of 3000mm.Kept high speed rotating 10 minutes, and slowed down gradually then.Take off cast tube after the shutdown and be incubated 20 minutes, be chilled to room temperature and can obtain the compound cast tube of devitrified glass lining at 800 ℃.At the glass-ceramic layer any surface finish flawless that the cast tube inwall forms, hardness is 1250HV.The crushing strength of devitrified glass lining cast tube is 290MPa, and the corrosion weight loss under the room temperature in 10%HCl is 0.0029mg/cm
2.h.
Embodiment 3: with composition is silica sand (60%), unslaked lime (18%), soda ash (6%), aluminium oxide (8%) and zine oxide (8%) but the crystallized glass slag charge in pebble mill, be crushed to the 60-200 order, stand-by; Start centrifuge to 1100 rev/min, under rotating conditions at the uniform velocity, with conduit 1650 ℃ molten steel being injected internal diameter is the centrifuge mold of 218mm, long 3000mm, and the speed that moves axially of mold is 10 cm per minute.After molten iron began to cast 0.5 minute, with another conduit at established cast tube inner-wall spraying glass powder, under cast tube waste heat and action of centrifugal force, glass powder sintering, crystallization form thick even, the fine and close devitrified glass lining of an about 2.5mm at the cast tube inwall.Molten iron and microcrystalline glass powder continuous pouring and sprinkling are until forming the long compound cast tube of 3000mm.Kept high speed rotating 10 minutes, and slowed down gradually then.Take off cast tube after the shutdown and be incubated 30 minutes at 850 ℃, slow cooling to room temperature can obtain the compound cast tube of sytull.At the glass-ceramic layer any surface finish flawless that the cast tube inwall forms, hardness is 1170HV.The crushing strength of devitrified glass lining cast tube is 310MPa, and the corrosion weight loss under the room temperature in 10%HCl is 0.0035mg/cm
2.h.
Claims (1)
1, the preparation method of the compound cast tube of devitrified glass lining is characterized in that this method may further comprise the steps:
(1) prepare the sytull slag charge by following quality proportioning, its granularity is 6～200 orders,
Silica sand unslaked lime aluminium oxide potassium oxide+sodium oxide titanium oxide zine oxide
58～64％ 10～20％ 5～10％ 3～12％ 0～4％ 0～8％
(2) with 1400～1600 ℃ the molten hot metal or the mold of molten steel injection centrifuge, and its speed with 600～2000 rev/mins is at the uniform velocity rotated, after molten iron liquid injects 0.5～1 minute, in mold, evenly spray sytull slag body with another conduit, the addition of glass powder and the weight ratio of cast tube are 0.05～0.4: 1, and the axial speed of related movement of mold and inlet is 5～50 cm per minute;
(3) centrifuge continues to keep constant speed 5～15 minutes, slows down gradually then, takes off cast tube after the shutdown, and insulation was carried out subsequent annealing in 25～50 minutes under 700～950 ℃, was cooled to room temperature, can obtain the compound cast tube of devitrified glass lining of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00136832A CN1093014C (en) | 2000-12-29 | 2000-12-29 | Technology for making composite cast tube with liner of microcrystal glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00136832A CN1093014C (en) | 2000-12-29 | 2000-12-29 | Technology for making composite cast tube with liner of microcrystal glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1302705A true CN1302705A (en) | 2001-07-11 |
| CN1093014C CN1093014C (en) | 2002-10-23 |
Family
ID=4597526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00136832A Expired - Fee Related CN1093014C (en) | 2000-12-29 | 2000-12-29 | Technology for making composite cast tube with liner of microcrystal glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093014C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322949C (en) * | 2004-05-21 | 2007-06-27 | 河南科技大学 | Method for preparing particle reinforced Fe-C composite material with big section and high volume fraction |
| CN103090118A (en) * | 2013-01-28 | 2013-05-08 | 扬州安泰威合金硬面科技有限公司 | Wear-resisting and corrosion-resisting alloy coating long and thin composite tube and production method thereof |
| CN103231036A (en) * | 2013-05-02 | 2013-08-07 | 昆明理工大学 | Centrifugal overflowing part with compounded inner surface and preparation process for overflowing part |
| CN110756759A (en) * | 2018-07-28 | 2020-02-07 | 席文君 | Method for centrifugally casting composite steel pipe by using steel slag and composite steel pipe |
| WO2021142624A1 (en) * | 2020-01-14 | 2021-07-22 | 泰安特夫德新材料科技有限公司 | Method for centrifugally casting composite steel pipe by means of slag |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250212Y (en) * | 1995-08-23 | 1997-03-26 | 符菊财 | Centrifugal pouring machine |
| CN2280364Y (en) * | 1996-11-29 | 1998-04-29 | 曾明义 | Terminal of pressing switch |
| CN1218885A (en) * | 1997-12-02 | 1999-06-09 | 张志新 | Composite tube |
| CN2337384Y (en) * | 1998-07-16 | 1999-09-08 | 王双喜 | Ceramic lining composite cast tube |
| CN2388456Y (en) * | 1999-09-03 | 2000-07-19 | 李伟标 | Improved compound tube |
-
2000
- 2000-12-29 CN CN00136832A patent/CN1093014C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322949C (en) * | 2004-05-21 | 2007-06-27 | 河南科技大学 | Method for preparing particle reinforced Fe-C composite material with big section and high volume fraction |
| CN103090118A (en) * | 2013-01-28 | 2013-05-08 | 扬州安泰威合金硬面科技有限公司 | Wear-resisting and corrosion-resisting alloy coating long and thin composite tube and production method thereof |
| CN103231036A (en) * | 2013-05-02 | 2013-08-07 | 昆明理工大学 | Centrifugal overflowing part with compounded inner surface and preparation process for overflowing part |
| CN110756759A (en) * | 2018-07-28 | 2020-02-07 | 席文君 | Method for centrifugally casting composite steel pipe by using steel slag and composite steel pipe |
| WO2021142624A1 (en) * | 2020-01-14 | 2021-07-22 | 泰安特夫德新材料科技有限公司 | Method for centrifugally casting composite steel pipe by means of slag |
| CN114126783A (en) * | 2020-01-14 | 2022-03-01 | 泰安特夫德新材料科技有限公司 | Method for centrifugally casting composite steel pipe by utilizing slag |
| CN114126783B (en) * | 2020-01-14 | 2023-11-03 | 泰安特夫德新材料科技有限公司 | Method for centrifugally casting composite steel pipe by utilizing slag |
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| Publication number | Publication date |
|---|---|
| CN1093014C (en) | 2002-10-23 |
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Granted publication date: 20021023 Termination date: 20121229 |