CN102852980B - Bearing pedestal of continuous caster - Google Patents
Bearing pedestal of continuous caster Download PDFInfo
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- CN102852980B CN102852980B CN201210318932.1A CN201210318932A CN102852980B CN 102852980 B CN102852980 B CN 102852980B CN 201210318932 A CN201210318932 A CN 201210318932A CN 102852980 B CN102852980 B CN 102852980B
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- bearing support
- support body
- water
- stainless steel
- 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 is divisional 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 is continuously cast into the production process with certain section configuration and certain size specification strand and is called continuous casting steel machine.
Complete the required equipment of this process 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 formed continuous casting steel machine core position equipment, is called traditionally casting machine.
When casting machine work, surface temperature is higher, adopts common bearing support to use.Must adopt water cooled bearing seat, existing bearing seat of continuous casting machine preparation process is more 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 is to provide a kind of simple in structure, water-cooled continuous casting machine bearing support and the processing method thereof that grow 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: 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 stainless steel cover plate through argon arc welding seal weld; The bottom of bearing support body is provided with the water inlet and the osculum that are 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 within the scope of ± 0.05mm.Stainless steel cover plate adopts 0Cr18Ni stainless steel, and 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, bearing support body is carried out successively that blank is rough milled, rough turn endoporus, milling water-cooling groove, crept into after water hole and osculum, remove polishing water-cooling groove, water hole burr, then bearing support body is sent into High Temperature Furnaces heating 4 hours, and the temperature of retainer shaft bearing body is 120～150 DEG C, finally enters welding sequence;
B, welding sequence: stainless steel cover plate described in bearing support employing manual argon arc welding seal welding, then enters stove insulation 3～4 hours;
The forward and backward plane of C, bearing support body is refined the paper size to figure on grinding machine, then by the bottom surface of fixture mill bearing support body taking described frontal plane or back plane as benchmark, within the scope of be controlled at ± 0.05mm of the perpendicularity of forward and backward plane and bottom surface.
Adopt the processing method of line cutting to process the keyway on described bottom surface, then taking bottom surface keyway as benchmark, carry out the high and degree of symmetry in the center of Control Shaft bearing body by fixture, and half finish turning after made allowance in advance; Finally, the endoporus of finish turning bearing support body is to figure paper size.Creeping into after water hole and osculum, using air pump, bar magnet to remove residual scrap iron, adopting polisher to remove burr, then cleaning, 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 multiple 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 bearing seat of continuous casting machine of the present invention, water-cooling groove on employing stainless steel cover plate and bearing support body, through argon arc welding seal welding, has length and feature simple in structure of firm welding, working life.
Brief description of the drawings
For content of the present invention is more likely to be clearly understood, below the specific embodiment 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 in embodiment;
Fig. 2 is that the X 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 the present embodiment comprises: bearing support body 1, and the top end of bearing support body 1 is arc surface, and this arc surface 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 the water inlet 1-2 and the osculum 1-3 that are communicated with the water-cooling groove 2 of described arc surface 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.
Central part on the plate of described stainless steel cover plate 4 is wide is connected by multiple plug weldings 3 with the central lug boss in the groove width of described water-cooling groove 2.
The processing method of above-mentioned bearing seat of continuous casting machine comprises:
From getting the raw materials ready between equipment cart, strictly control roughing surplus, through metalworking workshop, blank is rough milled, rough turn endoporus, milling circular arc water-cooling groove, circulated to welding shop after boring water hole and removing polishing water-cooling groove, water hole burr.
Bearing support entered High Temperature Furnaces heating 4 hours before soldering stainless steel plate, and the temperature of retainer shaft bearing body is 120～150 DEG C, the welding of employing manual argon arc welding, selection of electrodes E5015 or E309, ensure all even attractive in appearance of weld seam, weld laggard stove insulation 3～4 hours, prevented that bearing support is because of cooling too fast cracking.
In order to ensure the forward and backward plane of bearing support body and the perpendicularity of bottom surface, first the forward and backward plane of bearing support is refined to the paper size to figure on grinding machine, then by before fixture, one of back plane is for benchmark grinds bottom surface, forward and backward plane and the be controlled at ± 0.02mm of perpendicularity of bottom surface within the scope of.
Simultaneously, in order to ensure the machining accuracy of bottom surface keyway of bearing support body, adopt the processing method of line cutting.Again through taking bottom surface keyway as benchmark, carry out the high and degree of symmetry in the center of Control Shaft bearing body by fixture, and pre-made allowance is after half finish turning, finish turning endoporus is to figure paper size.
Finish turning is complete, adopts the rich digital display altimeters of Japan (Mitutoyo) three to detect, retainer shaft bearing center high with degree of symmetry within the scope of ± 0.02mm, and every bearing support all pass through steel seal and numbers, records tests data.
Bearing support plane hole adopts Special drilling jig, in accurate positioning, guarantee precision, has improved again speed of production.
After boring finishes, use air pump, bar magnet to remove residual scrap iron, adopt Germany's (Bosch) Bosch polisher to remove burr, carry out water-pressure sealed test by technological requirement, and make inspection record, then clean, antirust processing is until finished product, finally vanning.
Roller shell is produced 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 after qualified and carry out rough turn processing, taking cylindrical as benchmark, bore boring mesopore monolateral made allowance, afterwards quenching with Subsequent tempering.And first coupon is processed, detect after qualified and can start product to process.
Two ends, top centering, car goes out to pile weld 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.
Heap postwelding temper, detects and guarantees surfacing hardness oneself reaches drawing requirement.
Stainless steel cover plate 4 adopts 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 dissimilar steel welding, and the stainless weldability of 0Cr18Ni is poor, and crack defect easily appears in welded joint.
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 there is no significant dilution phenomenon, in technique, take following measures:
1), in order to reduce the welding deformation of member as far as possible, taked two manual electric arc welding methods that 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 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 likely cause welded joint grain boundary carbide separates out and form ferritic structure, reduces widely the impact toughness of joint.Preheating temperature is too low, does not have the effect of preheating, cannot 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 DEG C.
3), control and the tempering heat treatment of postwelding temperature: postwelding must slowly cool to 100～150 DEG C, and insulation 0.5～1h, makes the tissue of welded joint all change martensite into, and the tempering that could heat up subsequently, heat-treats.Tempering temperature should be controlled within the scope of 700～730 DEG C, 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 is slightly partial to base metal of carbon steel side, and two base metals are heated evenly unanimously.(3) due to needs multi-layer welding, lower one weld seam of weldering after front one deck weld seam is cooled to 200～300 DEG C.(4) postwelding carries out slow cooling.Concrete welding parameter is selected as following table:
Table 1 welding parameter table
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the 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 without also giving exhaustive to all mode of executions.And these belong to apparent variation that spirit of the present invention extended out or variation still among protection scope of the present invention.
Claims (1)
1. a processing method for bearing seat of continuous casting machine, described bearing seat of continuous casting machine comprises: bearing support body, the top end of bearing support body is arc surface, and this arc surface is provided with water-cooling groove, and seal weld is connected to stainless steel cover plate outside this water-cooling groove; The bottom of bearing support body is provided with the water inlet and the osculum that are 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 within the scope of ± 0.05mm; Stainless steel cover plate adopts 0Cr18Ni stainless steel, and bearing support body adopts Q235, Q345B or Q345D carbon steel;
It is characterized in that, its processing method comprises:
A, bearing support body is carried out successively that blank is rough milled, rough turn endoporus, milling water-cooling groove, crept into after water hole and osculum, remove polishing water-cooling groove, water hole burr, then bearing support body is sent into High Temperature Furnaces heating 4 hours, and the temperature of retainer shaft bearing body is 120～150 DEG C, finally enters welding sequence;
B, welding sequence: adopt manual argon arc welding stainless steel cover plate described in seal welding on described bearing support body, then enter stove insulation 3～4 hours;
The forward and backward plane of C, bearing support body is refined the paper size to figure on grinding machine, then by fixture with described frontal plane or
Back plane is the bottom surface of benchmark mill bearing support body, within the scope of be controlled at ± 0.05mm of the perpendicularity of forward and backward plane and bottom surface;
Adopt the processing method of line cutting to process the keyway on described bottom surface, then taking bottom surface keyway as benchmark, carry out the high and degree of symmetry in the center of Control Shaft bearing body by fixture, and half finish turning after made allowance in advance; Finally, the endoporus of finish turning bearing support body is to figure paper size;
Creeping into after water hole and osculum, using air pump, bar magnet to remove residual scrap iron, adopting polisher to remove burr, then cleaning, 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 |
|---|---|
| CN102852980A CN102852980A (en) | 2013-01-02 |
| CN102852980B true 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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| CN102852980A (en) | 2013-01-02 |
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