CN102852980A - Bearing pedestal of continuous caster - Google Patents
Bearing pedestal of continuous caster Download PDFInfo
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- CN102852980A CN102852980A CN2012103189321A CN201210318932A CN102852980A CN 102852980 A CN102852980 A CN 102852980A CN 2012103189321 A CN2012103189321 A CN 2012103189321A CN 201210318932 A CN201210318932 A CN 201210318932A CN 102852980 A CN102852980 A CN 102852980A
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- bearing support
- support body
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- cooling groove
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Abstract
The invention relates to a bearing pedestal of a continuous caster and a processing method thereof. The bearing pedestal comprises a bearing pedestal body. The top end face of the bearing pedestal body is an arc surface which is provided with a water cooling groove; a stainless steel cover plate is arranged at an outer side of the water cooling groove through seal welding; the bottom of the bearing pedestal body is provided with a water inlet hole and a water outlet hole respectively communicating with the parts of the water cooling groove at two sides of the arc surface; the verticality of a front plane, a back plane and a bottom plane of the bearing pedestal body is in a range of +/- 0.05 mm; the stainless steel cover plate is made from 0Cr18Ni stainless steel and the bearing pedestal body is made from Q235, Q345B or Q345D carbon steel.
Description
The application divides an application, the application number of original application: 201110065201.6, and the applying date: 2011-3-18, invention and created name: " processing method of bearing seat of continuous casting machine ".
Technical field
The present invention relates to the technical field of the processing method of bearing support, specifically a kind of water-cooled continuous casting machine bearing support and processing method thereof.
Background technique
High-temperature molten steel continuously is cast into the production process with certain section configuration and certain size specification strand is called continuous casting steel machine.
Finish the required equipment of this process the continuous casting complete sets of equipment.The mechanical-electrical-hydraulic integration that waters steel equipment, casting machine body equipment, cutting zone equipment, dummy bar collection and conveying equipment has consisted of continuous casting steel machine core position equipment, is called traditionally casting machine.
Surface temperature is higher during casting machine work, adopts common bearing support to use.Must adopt the water cooled bearing seat, existing bearing seat of continuous casting machine preparation process is complicated, working life is shorter, causes production and maintenance cost higher.
Summary of the invention
The technical problem to be solved in the present invention provides long water-cooled continuous casting machine bearing support and processing method thereof of a kind of simple in structure, working life.
In order to solve the problems of the technologies described above, the invention provides a kind of processing method of water-cooled continuous casting machine bearing support, described bearing seat of continuous casting machine comprises: the bearing support body, the top end of bearing support body is arc surface, this arc surface is provided with water-cooling groove, and this water-cooling groove outside is connected to the stainless steel cover plate through argon arc welding seal weld; The bottom of bearing support body is provided with water inlet and the osculum that is communicated with the water-cooling groove of described arc surface both sides respectively.The forward and backward plane of bearing support body and the perpendicularity of bottom surface are in ± 0.05mm scope.The stainless steel cover plate adopts the 0Cr18Ni stainless steel, and the bearing support body adopts Q235, Q345B or Q345D carbon steel.
The processing method of above-mentioned water-cooled continuous casting machine bearing support comprises:
A, to the bearing support body carry out successively that blank is rough milled, rough turn endoporus, mill water-cooling groove, creep into water hole and osculum after, remove polishing water-cooling groove, water hole burr, then the bearing support body is sent into High Temperature Furnaces heating 4 hours, and the temperature of retainer shaft bearing body is 120～150 ℃, enters at last welding sequence;
B, welding sequence: bearing support adopts the described stainless steel cover plate of manual argon arc welding seal welding, then advances stove insulation 3～4 hours;
The paper size to figure is finish grinded at grinding machine in the forward and backward plane of C, bearing support body, then by the bottom surface of anchor clamps mill bearing support body take described frontal plane or back plane as benchmark, the perpendicularity of forward and backward plane and bottom surface is controlled at ± the 0.05mm scope in.
Adopt the processing method of line cutting to process keyway on the described bottom surface, then take the bottom surface keyway as benchmark, come center height and the degree of symmetry of Control Shaft bearing body by anchor clamps, and half finish turning after pre-made allowance; At last, the endoporus of finish turning bearing support body is to the figure paper size.After creeping into water hole and osculum, use air pump, bar magnet to remove residual scrap iron, adopt polisher to remove burr, then clean, antirust processing.
Further, the both sides of the edge of described stainless steel cover plate and described water-cooling groove are by groove welding, to guarantee firm welding and working life.
Further, the central part of described stainless steel cover plate is connected by a plurality of plug weldings with the lug boss of described water-cooling groove central authorities, to guarantee firm welding and working life.
Technique scheme of the present invention has the following advantages compared to existing technology: in the bearing seat of continuous casting machine of the present invention, water-cooling groove on employing stainless steel cover plate and the bearing support body has long and characteristics simple in structure of firm welding, working life through the argon arc welding seal welding.
Description of drawings
For content of the present invention is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the bearing seat of continuous casting machine among the embodiment;
Fig. 2 is that the D of Fig. 1 is to view;
Fig. 3 is the A-A cross-sectional view of Fig. 1.
Embodiment
See Fig. 1-3, the bearing seat of continuous casting machine of present embodiment comprises: bearing support body 1, the top end of bearing support body 1 are arc surface 1-1, and this arc surface 1-1 is provided with water-cooling groove 2, and these water-cooling groove 2 outsides manually black electrode argon arc welding seal weld are connected to stainless steel cover plate 4; The bottom of bearing support body 1 is provided with water inlet 1-2 and the osculum 1-3 that is communicated with the water-cooling groove 2 of described arc surface 1-1 both sides respectively.
The both sides of the edge of described stainless steel cover plate 4 and described water-cooling groove 2 pass through groove welding.
The lug boss of the central authorities on the groove width of the central part on the plate of described stainless steel cover plate 4 is wide and described water-cooling groove 2 is connected by a plurality of plug weldings 3.
The processing method of above-mentioned bearing seat of continuous casting machine comprises:
From getting the raw materials ready between equipment cart, strictly control the roughing surplus, through metalworking workshop blank is rough milled, rough turn endoporus, circulated to welding shop after milling the circular arc water-cooling groove, bore the water hole and removing polishing water-cooling groove, water hole burr.
Bearing support advanced High Temperature Furnaces heating 4 hours before the soldering stainless steel plate, and the temperature of retainer shaft bearing body is 120～150 ℃, the welding of employing manual argon arc welding, selection of electrodes E5015 or E309, guaranteed all even attractive in appearance of weld seam, laggard stove insulation 3～4 hours is finished in welding, prevents that bearing support is because cooling off too fast the cracking.
For the forward and backward plane that guarantees the bearing support body and the perpendicularity of bottom surface, first the paper size to figure is finish grinded at grinding machine in the forward and backward plane of bearing support, then by before the anchor clamps, one of back plane is for benchmark grinds the bottom surface, forward and backward plane and the perpendicularity of bottom surface be controlled at ± the 0.02mm scope in.
Simultaneously for the machining accuracy of the bottom surface keyway that guarantees the bearing support body, adopted the processing method of line cutting.Again through take the bottom surface keyway as benchmark, come center height and the degree of symmetry of Control Shaft bearing body by anchor clamps, and pre-made allowance is after half finish turning, the finish turning endoporus is to the figure paper size.
Finish turning is complete, adopts Japan (Mitutoyo) three rich digital display altimeters to detect, retainer shaft bearing center high with degree of symmetry in ± 0.02mm scope, and every bearing support all pass through steel seal and numbers the records tests data.
Special drilling jig is adopted in hole, bearing support plane, has improved again speed of production in accurate positioning, assurance precision.
After boring finishes, use air pump, bar magnet to remove residual scrap iron, adopt Germany's (Bosch) Bosch polisher to remove burr, carry out the water-pressure sealed test by technological requirement, and make inspection record, then clean, antirust processing is until finished product, at last vanning.
Roller shell production from rough forging, through normalized treatment and hardness, Chemical composition are provided and mechanical property report and coupon qualified after rough turn blank, and carry out ultrasonic flaw detection.Detect and carry out rough turn processing after qualified, take cylindrical as benchmark, bore boring mesopore and monolateral made allowance, afterwards quenching with Subsequent tempering.And first coupon is processed, detect and can begin product is processed after qualified.
Two ends, top centering, car goes out the built-up welding groove, in strict accordance with bead-welding technology, selects qualified welding wire and solder flux, detects and record data, to guarantee cladding layer chemical composition and size.
Temper after the built-up welding detects and guarantees surfacing hardness oneself reaches drawing requirement.
Stainless steel cover plate 4 adopts the 0Cr18Ni stainless steel, and bearing support body 1 adopts Q235, Q345B or Q345D carbon steel.The welding of 0Cr18Ni stainless steel and Q235, Q345B or Q345D carbon steel belongs to the dissimilar steel welding, and the stainless weldability of 0Cr18Ni is relatively poor, and crack defect appears in welded joint easily.
In order to obtain flawless welded joint, should avoid the inconsistency of welded joint weld interface tissue and weld metal as far as possible, make 0Cr18Ni stainless steel one side not have significant dilution phenomenon, taked following measures in technique:
1), in order to reduce the welding deformation of member as far as possible, taked two manual electric arc welding methods that the manual arc welder is symmetrically welded, selection of electrodes E5015(or E309), the Cr equivalent of weld metal is 5%～6%, has good mechanical property after the tempered processing.
2), preheating temperature and interpass temperature: the control of weld preheating and interpass temperature is to reducing the certain influence that is formed with of crackle.Preheating temperature is too high, can cause the rate of cooling of weld seam slack-off, and what might cause welded joint grain boundary carbide separates out and form ferritic structure, reduces widely the impact toughness of joint.Preheating temperature is excessively low, does not then have the effect of preheating, can't prevent the formation of crackle.Preheating temperature and the interpass temperature of 0Cr18Ni stainless steel and Q235, Q345B or the welding of Q345D carbon steel will be controlled at 150～300 ℃.
3), control and the tempering heat treatment of postwelding temperature: postwelding must slowly cool to 100～150 ℃, and insulation 0.5～1h makes the tissue of welded joint all change martensite into, and the tempering that could heat up is subsequently heat-treated.Tempering temperature should be controlled in 700～730 ℃ of scopes, and holding time is at 4～5h.
4), operating procedure: thick for preventing that stainless steel from welding a side crystal, produce embrittlement and crackle, also to take following technological measure: (1), select little heat input, little welding current, faster welding speed.(2) adopt short arc welding, electric arc slightly is partial to the base metal of carbon steel side, and two base metals are heated evenly unanimously.(3) owing to need multi-layer welding, lower one weld seam of weldering after front one deck weld seam is cooled to 200～300 ℃.(4) postwelding carries out slow cooling.Concrete welding parameter is selected such as following table:
Table 1 welding parameter table
Obviously, above-described embodiment only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.And these belong to apparent variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (2)
1. bearing seat of continuous casting machine, it is characterized in that comprising: bearing support body, the top end of bearing support body are arc surface, and this arc surface is provided with water-cooling groove, this water-cooling groove outside seal weld is connected to the stainless steel cover plate; The bottom of bearing support body is provided with water inlet and the osculum that is communicated with the water-cooling groove of described arc surface both sides respectively;
The forward and backward plane of bearing support body and the perpendicularity of bottom surface are in ± 0.05mm scope; The stainless steel cover plate adopts the 0Cr18Ni stainless steel, and the bearing support body adopts Q235, Q345B or Q345D carbon steel.
2. the processing method of bearing seat of continuous casting machine according to claim 1 is characterized in that comprising:
A, to the bearing support body carry out successively that blank is rough milled, rough turn endoporus, mill water-cooling groove, creep into water hole and osculum after, remove polishing water-cooling groove, water hole burr, then the bearing support body is sent into High Temperature Furnaces heating 4 hours, and the temperature of retainer shaft bearing body is 120～150 ℃, enters at last welding sequence;
B, welding sequence: adopt manual argon arc welding described stainless steel cover plate of seal welding on described bearing support body, then advance stove insulation 3～4 hours;
The paper size to figure is finish grinded at grinding machine in the forward and backward plane of C, bearing support body, then by the bottom surface of anchor clamps mill bearing support body take described frontal plane or back plane as benchmark, the perpendicularity of forward and backward plane and bottom surface is controlled at ± the 0.05mm scope in;
Adopt the processing method of line cutting to process keyway on the described bottom surface, then take the bottom surface keyway as benchmark, come center height and the degree of symmetry of Control Shaft bearing body by anchor clamps, and half finish turning after pre-made allowance; At last, the endoporus of finish turning bearing support body is to the figure paper size;
After creeping into water hole and osculum, use air pump, bar magnet to remove residual scrap iron, adopt polisher to remove burr, then clean, antirust processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210318932.1A CN102852980B (en) | 2011-03-18 | 2011-03-18 | Bearing pedestal of continuous caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210318932.1A CN102852980B (en) | 2011-03-18 | 2011-03-18 | Bearing pedestal of continuous caster |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110065201A Division CN102152075B (en) | 2011-03-18 | 2011-03-18 | Method for processing bearing pedestal of continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
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| CN102852980A true CN102852980A (en) | 2013-01-02 |
| CN102852980B CN102852980B (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210318932.1A Expired - Fee Related CN102852980B (en) | 2011-03-18 | 2011-03-18 | Bearing pedestal of continuous caster |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883369A (en) * | 1987-03-25 | 1989-11-28 | Dujardin Montbard Somenor | Roll mounting device with a cooled bearing |
| CN2752530Y (en) * | 2004-12-15 | 2006-01-18 | 浙江诸暨市轴瓦总厂 | Water-cooling sliding bearing |
| CN200952533Y (en) * | 2006-07-24 | 2007-09-26 | 王天顺 | Non-lubricating water-cooled axle bush sleeve for continuous casting roller machine |
| CN101392801A (en) * | 2008-06-17 | 2009-03-25 | 王登科 | Method for making rolling bearing pedestal by welding process |
| CN101761582A (en) * | 2009-12-31 | 2010-06-30 | 张晓东 | Water-cooling bearing block |
-
2011
- 2011-03-18 CN CN201210318932.1A patent/CN102852980B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883369A (en) * | 1987-03-25 | 1989-11-28 | Dujardin Montbard Somenor | Roll mounting device with a cooled bearing |
| CN2752530Y (en) * | 2004-12-15 | 2006-01-18 | 浙江诸暨市轴瓦总厂 | Water-cooling sliding bearing |
| CN200952533Y (en) * | 2006-07-24 | 2007-09-26 | 王天顺 | Non-lubricating water-cooled axle bush sleeve for continuous casting roller machine |
| CN101392801A (en) * | 2008-06-17 | 2009-03-25 | 王登科 | Method for making rolling bearing pedestal by welding process |
| CN101761582A (en) * | 2009-12-31 | 2010-06-30 | 张晓东 | Water-cooling bearing block |
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| CN102852980B (en) | 2014-06-04 |
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Granted publication date: 20140604 Termination date: 20160318 |