CN1962892A - PH vacuum tank circulation pipe repairing method - Google Patents
PH vacuum tank circulation pipe repairing method Download PDFInfo
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- CN1962892A CN1962892A CN 200510110251 CN200510110251A CN1962892A CN 1962892 A CN1962892 A CN 1962892A CN 200510110251 CN200510110251 CN 200510110251 CN 200510110251 A CN200510110251 A CN 200510110251A CN 1962892 A CN1962892 A CN 1962892A
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- brick
- circulating pipe
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- pipe
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Abstract
The invention discloses a repairing method of circulating pipe of RH vacuum groove, which comprises the following steps: measuring real inner-diameter of stripped circulating from fire-tolerant brick; calculating the repaired thickness and height of brick; manufacturing the needed brick; making immersing pipe with less diameter through thin steel and height more than immersing pipe in the cylinder; casing the immersing pipe; piling manufactured repairing brick on the outer surface along the pressing cylinder; connecting the immersing pipe and circulating pipe; transmitting the random fire resistant material among the circulating pipe, repairing brick and pressing cylinder at pressing pattern.
Description
Technical field
The present invention relates to a kind of method for repairing and mending of RH vacuum tank circulation pipe, especially a kind of repairing brick and anti-material of indefinite form of adopting is in conjunction with the method for repairing the RH vacuum tank circulation pipe.
Background technology
Vacuum tank is made up of upper slot, lower channel and soaking tub.Wherein soaking tub is connected with the circulating pipe of lower channel bottom, and soaking tub is connected with circulating pipe by screw, and refractory brick is corresponding with refractory brick on the joint face, and fills up with refractory mortar.Because of soaking tub directly inserts molten steel, melting loss is very fast, in use, separate replacing.When soaking tub was changed operation, because the process of the refractory brick on circulating pipe pyroprocessing, refractory brick intensity reduced, and has the external force effect promptly can come off.Because circulating pipe refractory brick is connected with the cold steel of soaking tub refractory brick remained on surface, when soaking tub separates, circulating pipe refractory brick band can be fallen; Moreover, fill with chamotte between circulating pipe refractory brick and the soaking tub refractory brick, by pyroprocessing, the three is connected as a single entity, and when soaking tub separates, also circulating pipe refractory brick band can be fallen.Adopt separately amorphous refractory such as chamotte, moldable and be pressed into the material filling, can only use 10～20 stoves.After amorphous refractory is washed out, promptly need be pressed into operation, cost of idleness not only influences groove age, and cause mode of grooving can not be planned, have a strong impact on production.
Summary of the invention
The purpose of this invention is to provide a kind of circulating pipe method in work-ing life that improves, the present invention uses and repairs brick and amorphous refractory process combined, has overcome the above-mentioned shortcoming of prior art, has improved groove age, has saved cost, has improved production efficiency.
The invention provides a kind of method for repairing and mending of RH vacuum tank circulation pipe, this method comprises the steps:
1. measure the come off actual inner diameter of back circulating pipe of circulating pipe refractory brick, calculate the thickness and the height of required repairing brick, process required repairing brick.Repair the calculation formula of brick thickness and height: (1) repairs brick thickness=(the former internal diameter of circulating pipe actual measurement internal diameter-circulating pipe)/2; (2) repair brick height=refractory brick maximum height+50mm that comes off.
2. do a diameter less than the soaking tub diameter with thin steel, height is inserted in the soaking tub greater than the inner core that is pressed into of soaking tub, builds the repairing brick that processes in a week near the outside surface ring that is pressed into inner core in the upper edge of soaking tub.
3. connect soaking tub and circulating pipe; block forms ring-type at the repairing brick of soaking tub upper edge; circulating pipe is fallen the brick part to be surrounded fully; amorphous refractory is sent into circulating pipe, repaired brick and be pressed between the inner core by the mode that is pressed into; repair brick and combine with amorphous refractory, protection circulating pipe bottom is fallen the brick part and is not subjected to washing away of molten steel.
The method for repairing and mending of above-mentioned RH vacuum tank circulation pipe, described repairing brick is a magnesia chrome brick, the repairing brick that adopts this material to make has very strong tolerance to high temperature, is not easy to be subjected to the corrosion of molten steel.Described amorphous refractory is that industrial corporation produces in the last sea-run model is that the high alumina matter RH soaking tub of 1-RY-1 is pressed into material.
Beneficial effect of the present invention:
After enforcement repairing brick combined the method for mending circulating pipe with amorphous refractory, in the work-ing life of having improved circulating pipe, average tube was brought up to 120 stoves by 78 stoves age; Be pressed into 3-4 time by a pipe labour, be kept to a pipe labour and be pressed into once.Annual treatment capacity 6000 stoves, then can use 6000 ÷ 120=50 pipe labour, because of each pipe labour is pressed into 2 times less, can reduce altogether the whole year and be pressed into 100 times, once be pressed into cost=be pressed into elbow cost+be pressed into material ton cost * uses a tonnage+asbestos cost=1600+8700 * 2+200=19200 unit, annual minimizing is pressed into ten thousand yuan of total costs=19200 * 100=192.
Description of drawings
Fig. 1 is circulating pipe and soaking tub interior wall construction synoptic diagram after repairing
Embodiment
Embodiment 1:
When soaking tub is changed, the circulating pipe brick peels off 8, maximum is peeled off and highly is 150mm, record the circulating pipe brick peel off the back circulating pipe internal diameter be 880mm, the former internal diameter of circulating pipe is 750mm, calculate to repair thickness=[the former internal diameter of circulating pipe actual measurement internal diameter-circulating pipe]/2=65mm of brick, highly=the refractory brick maximum height+50mm=200mm that comes off.Processing thickness is 65mm, is the magnesia chrome brick of 200mm highly, is close to the ready-made inner core that is pressed into and builds by laying bricks or stones in the soaking tub upper edge, and the described inner core that is pressed into is to be that the thin steel of 2mm is made by thickness, and diameter is 680mm, highly is 1650mm.Connect soaking tub and circulating pipe; block forms ring-type at the repairing brick of soaking tub upper edge; circulating pipe is fallen the brick part to be surrounded fully; the model that industrial corporation in the last sea-run is produced is that the high alumina matter RH soaking tub of 1-RY-1 is pressed into material and sends into circulating pipe, repairs brick and be pressed between the inner core by the mode that is pressed into; repair brick and combine with amorphous refractory, protection circulating pipe bottom is fallen the brick part and is not subjected to washing away of molten steel.Fig. 1 is circulating pipe and soaking tub interior wall construction synoptic diagram after repairing, as shown in FIG.: 1 expression vacuum tank body circulating pipe position steel plate; 2 expression vacuum tank body soaking tub position steel plates; 3 expression vacuum tank body circulating pipe refractory brick; 4 expression indefinite forms are repaired refractory materials; Brick is repaired in 5 expressions; 6 expressions are pressed into inner core.In the production process, be pressed into inner core and at high temperature melt and become molten steel, whole process of production is not produced any detrimentally affect.Use this processing method, the pipe of the circulating pipe after the replacing reaches 110 stoves, the work-ing life of having improved circulating pipe greatly age.
Embodiment 2:
When soaking tub is changed, the circulating pipe brick peels off 6, maximum is peeled off and highly is 143mm, record the circulating pipe brick peel off the back circulating pipe internal diameter be 866mm, the former internal diameter of circulating pipe is 750mm, calculate to repair thickness=[the former internal diameter of circulating pipe actual measurement internal diameter-circulating pipe]/2=58mm of brick, highly=the refractory brick maximum height+50mm=193mm that comes off.Processing thickness is 58mm, is the magnesia chrome brick of 193mm highly, is close to the ready-made inner core that is pressed into and builds by laying bricks or stones in the soaking tub upper edge, and the described inner core that is pressed into is to be that the thin steel of 2mm is made by thickness, and diameter is 680mm, highly is 1650mm.Connect soaking tub and circulating pipe; block forms ring-type at the repairing brick of soaking tub upper edge; circulating pipe is fallen the brick part to be surrounded fully; the model that industrial corporation in the last sea-run is produced is that the high alumina matter RH soaking tub of 1-RY-1 is pressed into material and sends into circulating pipe, repairs brick and be pressed between the inner core by the mode that is pressed into; repair brick and combine with amorphous refractory, protection circulating pipe bottom is fallen the brick part and is not subjected to washing away of molten steel.Fig. 1 is circulating pipe and soaking tub interior wall construction synoptic diagram after repairing, as shown in FIG.: 1 expression vacuum tank body circulating pipe position steel plate; 2 expression vacuum tank body soaking tub position steel plates; 3 expression vacuum tank body circulating pipe refractory brick; 4 expression indefinite forms are repaired refractory materials; Brick is repaired in 5 expressions; 6 expressions are pressed into inner core.In the production process, be pressed into inner core and at high temperature melt and become molten steel, whole process of production is not produced any detrimentally affect.Use this processing method, the pipe of the circulating pipe after the replacing reaches 118 stoves, the work-ing life of having improved circulating pipe greatly age.
Claims (2)
1. the method for repairing and mending of a RH vacuum tank circulation pipe is characterized in that this method comprises the steps:
(a) actual inner diameter of circulating pipe after measurement circulating pipe refractory brick comes off, calculate the thickness and the height of required repairing brick, process required repairing brick, repair the calculation formula of brick thickness and height: (1) repairs brick thickness=(the former internal diameter of circulating pipe actual measurement internal diameter-circulating pipe)/2; (2) repair brick height=refractory brick maximum height+50mm that comes off;
(b) do a diameter less than the soaking tub diameter with thin steel, height is inserted in the soaking tub greater than the inner core that is pressed into of soaking tub, builds the repairing brick that processes in a week near the outside surface ring that is pressed into inner core in the upper edge of soaking tub;
(c) connect soaking tub and circulating pipe, amorphous refractory is sent into circulating pipe, repaired brick and be pressed between the inner core by the mode that is pressed into.
2. the method for repairing and mending of RH vacuum tank circulation pipe according to claim 1 is characterized in that described repairing brick is a magnesia chrome brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510110251 CN1962892A (en) | 2005-11-10 | 2005-11-10 | PH vacuum tank circulation pipe repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510110251 CN1962892A (en) | 2005-11-10 | 2005-11-10 | PH vacuum tank circulation pipe repairing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1962892A true CN1962892A (en) | 2007-05-16 |
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ID=38082118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510110251 Pending CN1962892A (en) | 2005-11-10 | 2005-11-10 | PH vacuum tank circulation pipe repairing method |
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| CN (1) | CN1962892A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892355A (en) * | 2010-06-30 | 2010-11-24 | 浙江金磊高温材料股份有限公司 | RH furnace circulating pipe and building method thereof |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
| CN107779556A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | Method for repairing bottom groove of vacuum chamber of RH refining furnace |
-
2005
- 2005-11-10 CN CN 200510110251 patent/CN1962892A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892355A (en) * | 2010-06-30 | 2010-11-24 | 浙江金磊高温材料股份有限公司 | RH furnace circulating pipe and building method thereof |
| CN101892355B (en) * | 2010-06-30 | 2012-07-04 | 浙江金磊高温材料股份有限公司 | RH furnace circulating pipe and building method thereof |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
| CN107779556A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | Method for repairing bottom groove of vacuum chamber of RH refining furnace |
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