CN102000653B - Coating process of cast iron tube cement lining - Google Patents
Coating process of cast iron tube cement lining Download PDFInfo
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- CN102000653B CN102000653B CN2010105029807A CN201010502980A CN102000653B CN 102000653 B CN102000653 B CN 102000653B CN 2010105029807 A CN2010105029807 A CN 2010105029807A CN 201010502980 A CN201010502980 A CN 201010502980A CN 102000653 B CN102000653 B CN 102000653B
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Abstract
The invention discloses a coating process of a cast iron tube cement lining, which comprises the following steps of: (1) mortar stirring: adding cement, sand and water by the proportion of the mortar, and stirring uniformly; (2) mortar out: pouring the stirred mortar in a material distributing cart; (3) material distribution: extending a material distributing tube into a rotary cast iron tube, and spraying mortar on the inner wall of the cast iron tube; (4) centrifugation: driving the cast iron tube to rotate and centrifugalize around the axis during material distribution; and (5) water removal: pouring the water centrifugalized in the centrifugation step out of the cast iron tube. The coating process has the key improvement that the step (4) comprises centrifugalizing at a low speed for 3-7 minutes, with the rotating speed of the cast iron tube to be 400-550 revolutions/second; centrifugalizing at a middle speed for 1-3 minutes, with the rotating speed of the cast iron tube to be 600-800 revolutions/second; and centrifugalizing at a high speed for 2-5 minutes, with the rotating speed of the cast iron tube to be 1100-1300 revolutions/second. The coating process has the advantages that the centrifugation step comprises low-speed centrifugation, middle-speed centrifugation and high-speed centrifugation, different rotating speeds are set for each step, and the strength of the lining can be enhanced effectively.
Description
Technical field
The present invention relates to a kind of liner cement mortar cast iron pipe production technology, particularly a kind of cast iron pipe cement lining coating processes.
Background technology
Along with liner cement mortar cast iron pipe product uses in water system on a large scale, also increasingly high to the quality requirement of cast iron pipe cement lining, cast iron pipe cement lining coating processes originally comprises that (1) mortar stirs; (2) discharging; (3) cloth; (4) centrifugal; (5) pouring; In the mortar stirring preface, do not have the adding precision of strict control cement, sand and water, only rely on operating personnel to estimate the quantity that feeds intake, the cement lining packing that causes being processed into is not enough; Strength grade can not meet design requirement; In rotary process, just set a centrifugal rotational speed according to cast, can not effectively guarantee the packing of liner, the cement lining intensity that machines is unstable; The uniformity is relatively poor, and tensile strength is lower.
Summary of the invention
Technical problem to be solved by this invention provides a kind of cement lining tensile strength that can effectively improve cast iron pipe, effectively improves the cast iron pipe cement lining coating processes of the cement lining uniformity and stability.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: the cast iron pipe cement lining coating processes may further comprise the steps: (1) mortar stirs, and drops into cement, sand and water according to the mortar proportioning, and evenly stirs; (2) discharging is poured the mortar that stirs into the cloth truck; (3) cloth stretches into the cast iron pipe of rotation with cloth tube, on the cast iron pipe inwall, sprays mortar; (4) centrifugal, drive cast iron pipe in the time of cloth around its axis rotating centrifugal; (5) pouring is poured out cast iron pipe with the centrifugal water that goes out in the rotary process; Its key improvements is: said step (4) comprises the centrifugal and high speed centrifugation of low-speed centrifugal, middling speed that carries out successively; Said low-speed centrifugal 3-7 minute, the cast iron pipe rotating speed was 400-550 revolutions per second; The centrifugal 1-3 of middling speed minute, the cast iron pipe rotating speed was 600-800 revolutions per second; High speed centrifugation 2-5 minute, the cast iron pipe rotating speed was 1100-1300 revolutions per second.
Adopt the beneficial effect that technique scheme produced to be: with centrifugation step be divided into low-speed centrifugal, middling speed is centrifugal and three steps of high speed centrifugation carry out, each step is set different rotating speed, low-speed centrifugal makes that cement mortar evenly distributes in the pipe, silt particle is not stratified during wall built-up; The packing of the centrifugal increase cement lining of middling speed is taken off the part water in the mortar; High speed centrifugation makes liner fine and close fully, takes off residual moisture, and can the automatic frequency-conversion device be set at centrifugal station, and the centrifugal of every kind of speed stops after the stipulated time automatically, avoids human factor to influence the control of centrifugation time, can effectively improve liner intensity.Through the pull strength of test detection liner, pull strength is generally at 3-4Mpa before improving, and improving the back pull strength can reach more than the 5Mpa.
The specific embodiment
For making above-mentioned purpose of the present invention, characteristic and beneficial effect can be more obviously understandable, will combine the specific embodiment of the invention below, and the technical scheme in the embodiment of the invention is carried out clear, intactly description.
Embodiment 1: the cast iron pipe cement lining coating processes may further comprise the steps: (1) mortar stirs, and drops into cement, sand and water according to the mortar proportioning, and evenly stirs; Mortar can be selected different labels and dissimilar mortars according to different casts and requirement; Such as the cement mortar that can select M5-M10, also can select mixed mortar, the match ratio of mortar can be allocated according to relevant criterion; And employing electronic scale weighing when feeding intake; The accuracy that can effectively guarantee to feed intake and the intensity of mortar are avoided the waste of raw material on the one hand, can also improve the mortar quality on the other hand; The process of feeding intake can adopt manual work to feed intake, also can automatic charging, adopt the input precision of electronic scale weighing can raising material, and can save the material use amount on the one hand, can effectively guarantee the mortar quality on the other hand; (2) discharging is poured the mortar that stirs into the cloth truck; Load can be adjusted with the different of one-time-concreting quantity according to the difference of cast; (3) cloth stretches into the cast iron pipe of rotation with cloth tube, on the cast iron pipe inwall, sprays mortar; In the time of cloth cast iron pipe rotation time cloth tube also will be according to the different set of mortar thickness certain speed that moves axially, guarantee the thickness of mortar liner on the one hand, can also guarantee the uniformity of mortar liner on the other hand; (4) centrifugal, drive the cast iron pipe rotation in the time of cloth, make the mortar that is sprayed on the cast iron pipe inwall centrifugal; (5) pouring is poured out cast iron pipe with the centrifugal water that goes out in the rotary process; Mortar liner redundant moisture will be separated with mortar in the time of centrifugal, must isolated water be poured out behind centrifugal the finishing, and avoids soaking the mortar liner for a long time, and then influences the quality of mortar liner; Its key improvements is: said step (4) comprises low-speed centrifugal 3-7 minute, and the cast iron pipe rotating speed is 400 revolutions per seconds; The centrifugal 1-3 of middling speed minute, the cast iron pipe rotating speed was 600 revolutions per seconds; High speed centrifugation 2-5 minute, the cast iron pipe rotating speed was 1100 revolutions per seconds, and centrifugation time is adjusted according to different casts and the label that adopts mortar with centrifugal speed.Drive motors on the centrifuge is arranged to carry out automatically the motor of frequency control; Before production, select the rotating speed and the centrifugation time of each different phase, so that separate the operation that packing and intensity are dewatered, improved to different phase to the mortar that is sprayed on the cast iron pipe inwall according to different casts.
Embodiment 2: adopting caliber is that the cast iron pipe of 600mm carries out, and the rotating speed difference in rotary process, all the other steps are identical with embodiment 1, wherein in the rotary process during low-speed centrifugal cast iron pipe rotating speed be 500 revolutions per seconds; The cast iron pipe rotating speed was 700 revolutions per seconds when middling speed was centrifugal; The cast iron pipe rotating speed is 1200 revolutions per seconds in the time of high speed centrifugation, and the cast iron pipe centrifugation time can be adjusted according to different casts.
In concrete application process, can confirm the rotating speed of different casts according to the data that table 1 provides in different phase.
Table 1
Claims (1)
1. cast iron pipe cement lining coating processes may further comprise the steps: (1) mortar stirs, and drops into cement, sand and water according to the mortar proportioning, and evenly stirs; (2) discharging is poured the mortar that stirs into the cloth truck; (3) cloth stretches into the cast iron pipe of rotation with cloth tube, on the cast iron pipe inwall, sprays mortar; (4) centrifugal, drive cast iron pipe in the time of cloth around its axis rotating centrifugal; (5) pouring is poured out cast iron pipe with the centrifugal water that goes out in the rotary process; It is characterized in that: said step (4) comprises the centrifugal and high speed centrifugation of low-speed centrifugal, middling speed that carries out successively; Said low-speed centrifugal 3-7 minute, the cast iron pipe rotating speed was 400-550 revolutions per second; The centrifugal 1-3 of middling speed minute, the cast iron pipe rotating speed was 600-800 revolutions per second; High speed centrifugation 2-5 minute, the cast iron pipe rotating speed was 1100-1300 revolutions per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105029807A CN102000653B (en) | 2010-10-12 | 2010-10-12 | Coating process of cast iron tube cement lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105029807A CN102000653B (en) | 2010-10-12 | 2010-10-12 | Coating process of cast iron tube cement lining |
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| Publication Number | Publication Date |
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| CN102000653A CN102000653A (en) | 2011-04-06 |
| CN102000653B true CN102000653B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105029807A Active CN102000653B (en) | 2010-10-12 | 2010-10-12 | Coating process of cast iron tube cement lining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111775302A (en) * | 2020-07-10 | 2020-10-16 | 宁夏青龙管业集团股份有限公司 | Steel pipe lining cement mortar belt centrifuge molding preparation method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624874B (en) * | 2013-11-15 | 2015-12-16 | 新兴铸管股份有限公司 | A kind of metal pipe cement mortar liner machine |
| CN103963155B (en) * | 2014-04-25 | 2017-01-18 | 四川省川建管道有限公司 | Dry cement lining technology suitable for spheroidal graphite cast iron pipe fitting |
| CN110526645A (en) * | 2019-08-27 | 2019-12-03 | 武汉中地大非开挖研究院有限公司 | Liner repairing mortar and preparation method are built in a kind of centrifugation spray of pipeline |
| CN110587805A (en) * | 2019-08-31 | 2019-12-20 | 浙江深澳机械工程有限公司 | Swing arm type lining machine |
| CN111804551A (en) * | 2020-06-29 | 2020-10-23 | 新兴铸管股份有限公司 | Method for processing cement lining of cast iron pipe |
| CN114919058A (en) * | 2022-06-09 | 2022-08-19 | 唐山华纤科技有限公司 | Wet preparation process of ceramic fiber tube |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4632720A (en) * | 1979-12-04 | 1986-12-30 | Heidelberger Zement Ag | Apparatus for preparing an annular body of a hydraulically setting mass |
| CN1072007A (en) * | 1992-09-25 | 1993-05-12 | 第十三冶金建设公司新技术开发公司 | Wear-and corrosion-resistant composite steel pipe and manufacture method thereof |
| IN189014B (en) * | 1998-09-30 | 2002-12-07 | Indian Hume Pipe Company Ltd | |
| CN101761730A (en) * | 2010-02-02 | 2010-06-30 | 上海建冶科技工程股份有限公司 | Corrosion prevention method for inner wall of large-caliber water supply steel tube |
| CN101823293A (en) * | 2010-04-27 | 2010-09-08 | 桃江新兴管件有限责任公司 | Method for coating cement lining on pipe fitting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537923B2 (en) * | 1973-12-17 | 1978-03-23 |
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- 2010-10-12 CN CN2010105029807A patent/CN102000653B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4632720A (en) * | 1979-12-04 | 1986-12-30 | Heidelberger Zement Ag | Apparatus for preparing an annular body of a hydraulically setting mass |
| CN1072007A (en) * | 1992-09-25 | 1993-05-12 | 第十三冶金建设公司新技术开发公司 | Wear-and corrosion-resistant composite steel pipe and manufacture method thereof |
| IN189014B (en) * | 1998-09-30 | 2002-12-07 | Indian Hume Pipe Company Ltd | |
| CN101761730A (en) * | 2010-02-02 | 2010-06-30 | 上海建冶科技工程股份有限公司 | Corrosion prevention method for inner wall of large-caliber water supply steel tube |
| CN101823293A (en) * | 2010-04-27 | 2010-09-08 | 桃江新兴管件有限责任公司 | Method for coating cement lining on pipe fitting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111775302A (en) * | 2020-07-10 | 2020-10-16 | 宁夏青龙管业集团股份有限公司 | Steel pipe lining cement mortar belt centrifuge molding preparation method |
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| CN102000653A (en) | 2011-04-06 |
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Owner name: HEBEI XINXING DUCTILE IRON PIPES CO., LTD. Free format text: FORMER OWNER: XINXING CAST PIPE CO., LTD. Effective date: 20110909 |
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Effective date of registration: 20110909 Address after: 056300 Luoyang, Hebei City, Wuan, north of the village on the north of Handan Applicant after: Hebei Xinxing Ductile Iron Pipes Co.,Ltd. Address before: 056300 Hebei Province, Wuan City Xinxing Pipes Limited by Share Ltd Applicant before: Xinxing Ductile Iron Pipes Co., Ltd. |
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