CN102848150B - The processing method of water-cooled continuous casting machine bearing block - Google Patents
The processing method of water-cooled continuous casting machine bearing block Download PDFInfo
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- CN102848150B CN102848150B CN201210318807.0A CN201210318807A CN102848150B CN 102848150 B CN102848150 B CN 102848150B CN 201210318807 A CN201210318807 A CN 201210318807A CN 102848150 B CN102848150 B CN 102848150B
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Abstract
The present invention relates to a kind of processing method of bearing seat of continuous casting machine, it comprises: bearing block body is carried out that blank is rough milled successively, rough turn endoporus, milling water-cooling groove, bore water hole after, remove polishing tank, water hole burr, then send into high temperature furnace and heat 4 hours, and the temperature of retainer shaft bearing body is 120 ~ 150 DEG C, finally enters welding procedure; Welding procedure: adopt stainless steel cover plate described in manual argon arc welding seal welding, be then incubated; The forward and backward plane of bearing block body is refined to figure paper size on grinding machine, then by fixture is the bottom surface of benchmark mill bearing block body with back plane, the degree control of forward and backward plane and bottom surface within the scope of ± 0.05mm; Adopt the processing method of Linear cut to process keyway on described bottom surface, then with bottom surface keyway for benchmark, carry out the high and symmetry of control centre by fixture, and after half finish turning pre-made allowance; Finally, the endoporus of finish turning bearing block body is to figure paper size.
Description
The application is divisional application, the application number of original application: 201110065201.6, 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 block, specifically a kind of processing method of water-cooled continuous casting machine bearing block.
Background technology
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.
The equipment needed for this process of completing is continuous casting complete set of equipments.Water steel equipment, conticaster body equipment, cutting zone equipment, dummy bar collects and the mechanical-electrical-hydraulic integration of conveying equipment constitutes continuous casting steel machine core position equipment, is called conticaster traditionally.
During conticaster work, surface temperature is higher, adopts common bearing block to use.Must adopt water-cooled axle-bearing base, existing bearing seat of continuous casting machine manufacture craft is more complicated, service life is shorter, cause produce and maintenance cost higher.
Summary of the invention
The technical problem to be solved in the present invention is to provide the processing method of the water-cooled continuous casting machine bearing block that a kind of structure is simple, service life is longer.
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 block, described bearing seat of continuous casting machine comprises: bearing block body, the top end face of bearing block body is arc surface, this arc surface is provided with water-cooling groove, is connected to stainless steel cover plate outside this water-cooling groove through argon arc welding seal weld; The bottom of bearing block body is provided with the inlet opening and apopore that are communicated with the water-cooling groove of described arc surface both sides respectively; Stainless steel cover plate adopts 0Cr18Ni stainless steel.
The processing method of above-mentioned bearing seat of continuous casting machine comprises:
A, bearing block body is carried out that blank is rough milled successively, rough turn endoporus, milling water-cooling groove, creep into water hole and apopore after, remove polishing water-cooling groove, water hole burr, then bearing block body is sent into high temperature furnace and heat 4 hours, and the temperature of retainer shaft bearing body is 120 ~ 150 DEG C, finally enters welding procedure;
B, welding procedure: bearing block adopts stainless steel cover plate described in manual argon arc welding seal welding, then enter stove insulation 3 ~ 4 hours;
The forward and backward plane of C, bearing block body is refined to figure paper size on grinding machine, is then the bottom surface of benchmark mill bearing block body with described frontal plane or back plane by fixture, the degree control of forward and backward plane and bottom surface within the scope of ± 0.05mm.
Adopt the processing method of Linear cut to process keyway on described bottom surface, then with bottom surface keyway for benchmark, control the high and symmetry in the center of bearing block body by fixture, and after half finish turning pre-made allowance; Finally, the endoporus of finish turning bearing block body is to figure paper size.
After creeping into water hole and apopore, use air pump, bar magnet to remove residual scrap iron, adopt sander to remove burr, then carry out cleaning, antirust treatment.
Further, the both sides of the edge of described stainless steel cover plate and described water-cooling groove pass through groove welding, to guarantee firm welding and service life.
Further, the central portion of described stainless steel cover plate is connected by multiple plug welding with the lug boss of described water-cooling groove central authorities, to guarantee firm welding and service 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, adopt water-cooling groove on stainless steel cover plate and bearing block body through argon arc welding seal welding, there is firm welding, the service life longer and simple feature of structure.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, 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 the D direction view of Fig. 1;
Fig. 3 is the A-A cross-sectional view of Fig. 1.
Detailed description of the invention
See Fig. 1-3, the bearing seat of continuous casting machine of the present embodiment comprises: bearing block body 1, and the top end face of bearing block body 1 is arc surface 1-1, and this arc surface 1-1 is provided with water-cooling groove 2, and outside this water-cooling groove 2, manually black electrode argon arc welding seal weld is connected to stainless steel cover plate 4; The bottom of bearing block body 1 is provided with the inlet opening 1-2 and apopore 1-3 that are communicated with the water-cooling groove 2 of described arc surface 1-1 both sides respectively.
Both sides of the edge and the described water-cooling groove 2 of described stainless steel cover plate 4 pass through groove welding.
Central portion on the plate of described stainless steel cover plate 4 is wide is connected by multiple plug welding 3 with the lug boss of the central authorities 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, strict control roughing surplus, through metalworking workshop, blank rough milled, rough turn endoporus, milling circular arc water-cooling groove, bore water hole and remove polishing water-cooling groove, water hole burr after circulate to welding shop.
Bearing block heats 4 hours at the advance high temperature furnace of soldering stainless steel plate, and the temperature of retainer shaft bearing body is 120 ~ 150 DEG C, employing manual argon arc welding welds, selection of electrodes E5015 or E309, ensure that all even attractive in appearance of weld seam, welding laggard stove insulation 3 ~ 4 hours, having prevented bearing block from ftractureing because cooling too fast.
In order to the perpendicularity of the forward and backward plane and bottom surface that ensure bearing block body, first the forward and backward plane of bearing block is refined to figure paper size on grinding machine, then by before fixture, one of back plane grinds bottom surface for benchmark, forward and backward plane and the degree control of bottom surface within the scope of ± 0.02mm.
Simultaneously in order to ensure the machining accuracy of the bottom surface keyway of bearing block body, have employed the processing method of Linear cut.Pass through with bottom surface keyway for benchmark again, control the high and symmetry in the center of bearing block 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 height instrument of Japan (Mitutoyo) three to detect, retainer shaft bearing center high with symmetry within the scope of ± 0.02mm, and every part bearing block is all through steel seal numbering, records tests data.
Bearing block plane hole adopts Special drilling jig, while accurate positioning, guarantee precision, turn improve speed of production.
After boring terminates, use air pump, bar magnet to remove residual scrap iron, adopt Germany's (Bosch) Bosch sander to remove burr, carry out water-pressure sealed test by technological requirement, and make inspection record, then carry out cleaning, antirust treatment until finished product, finally case.
Roller shell is produced from rough forging, through normalized treatment and provide hardness, chemical analysis and mechanical performance to report and coupon qualified after rough turn blank, and carry out ultrasonic examination.Detect qualified after carry out rough turn processing, take cylindrical as benchmark, bore boring mesopore monolateral made allowance, afterwards modifier treatment.And first coupon is processed, detect qualified after can start to process product.
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 block body 1 adopts Q235, Q345B or Q345D carbon steel.0Cr18Ni stainless steel belongs to different steel weld with welding of Q235, Q345B or Q345D carbon steel, and the stainless weldability of 0Cr18Ni is poor, and welding point easily occurs crack defect.
In order to obtain flawless welding point, the inconsistency of welding point melt run tissue and weld metal should be avoided as far as possible, making 0Cr18Ni stainless steel side there is no significant dilution phenomenon, technique takes following measures:
1), in order to reduce the welding deformation of component as far as possible, the manual electric arc welding method that two electric welders are symmetrically welded is taken, selection of electrodes E5015(or E309), the Cr equivalent of weld metal is 5% ~ 6%, has good mechanical property after tempered process.
2), preheat temperature and interlayer temperature: the control of weld preheating and interlayer temperature is formed with certain influence to what reduce crackle.Preheat temperature is too high, and the cooling velocity of weld seam can be caused slack-off, likely causes the precipitation of welding point grain boundary carbide and forms ferritic structure, reducing the impact flexibility of joint widely.Preheat temperature is too low, then do not have the effect of preheating, cannot prevent the formation of crackle.The preheat temperature that 0Cr18Ni stainless steel welds with Q235, Q345B or Q345D carbon steel and interlayer temperature will control at 150 ~ 300 DEG C.
3), the control of postwelding temperature and tempering heat treatment: postwelding must slowly cool to 100 ~ 150 DEG C, and insulation 0.5 ~ 1h, make the tissue of welding point all change martensite into, could heat up tempering subsequently, heat-treats.Temperature should control within the scope of 700 ~ 730 DEG C, and temperature retention time is at 4 ~ 5h.
4), operating procedure: for preventing stainless steel welded side crystal thick, producing brittle and crackle, also will take following technological measure: (1), select little heat input, little welding current, faster speed of welding.(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 multilayer welding, after front one deck weld seam is cooled to 200 ~ 300 DEG C, lower one weld seam is welded.(4) postwelding carries out slow cooling.Concrete welding condition is selected as following table:
Table 1 welding condition 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 exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (1)
1. the processing method of a water-cooled continuous casting machine bearing block, it is characterized in that: described bearing seat of continuous casting machine comprises: bearing block body, the top end face of bearing block body is arc surface, and this arc surface is provided with water-cooling groove, and this water-cooling groove outer side seal is welded with stainless steel cover plate; The bottom of bearing block body is provided with the inlet opening and apopore that are communicated with the water-cooling groove of described arc surface both sides respectively; Stainless steel cover plate adopts 0Cr18Ni stainless steel;
The processing method of above-mentioned bearing seat of continuous casting machine comprises:
A, bearing block body is carried out that blank is rough milled successively, rough turn endoporus, milling water-cooling groove, creep into water hole and apopore after, remove polishing water-cooling groove, water hole burr, then bearing block body is sent into high temperature furnace and heat 4 hours, and the temperature of retainer shaft bearing body is 120 ~ 150 DEG C, finally enters welding procedure;
B, welding procedure: adopt manual argon arc welding stainless steel cover plate described in seal welding on described bearing block body, then enter stove insulation 3 ~ 4 hours;
The forward and backward plane of C, bearing block body is refined to figure paper size on grinding machine, is then the bottom surface of benchmark mill bearing block body with described frontal plane or back plane by fixture, the degree control of forward and backward plane and bottom surface within the scope of ± 0.05mm;
Bearing body adopts Q235 carbon steel; 0Cr18Ni stainless steel welds with Q235 carbon steel, and technique takes following measures:
1), the manual electric arc welding method that is symmetrically welded of two electric welders, selection of electrodes E5015;
2), preheat temperature and interlayer temperature control at 150 ~ 300 DEG C;
3), postwelding slowly cools to 100 ~ 150 DEG C, insulation 0.5 ~ 1h, and make the tissue of welding point all change martensite into, could heat up tempering subsequently, heat-treats; Temperature should control within the scope of 700 ~ 730 DEG C, and temperature retention time is at 4 ~ 5h.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110065201A CN102152075B (en) | 2011-03-18 | 2011-03-18 | Method for processing bearing pedestal of continuous casting machine |
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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| CN102848150A CN102848150A (en) | 2013-01-02 |
| CN102848150B true CN102848150B (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210318807.0A Active CN102848150B (en) | 2011-03-18 | 2011-03-18 | The processing method of water-cooled continuous casting machine bearing block |
| CN201210320507.6A Active CN102848151B (en) | 2011-03-18 | 2011-03-18 | A kind of processing method of bearing block |
| CN201110065201A Expired - Fee Related CN102152075B (en) | 2011-03-18 | 2011-03-18 | Method for processing bearing pedestal of continuous casting machine |
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| CN201210320507.6A Active CN102848151B (en) | 2011-03-18 | 2011-03-18 | A kind of processing method of bearing block |
| CN201110065201A Expired - Fee Related CN102152075B (en) | 2011-03-18 | 2011-03-18 | Method for processing bearing pedestal of continuous casting machine |
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| CN102635567A (en) * | 2012-03-29 | 2012-08-15 | 苏州立德泵技术研究院有限公司 | Octagonal closed-type bearing bracket connected with shell |
| CN103612073B (en) * | 2013-11-21 | 2017-01-04 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of processing bearing block class part essence dimension process method |
| CN103707007B (en) * | 2013-12-04 | 2017-01-04 | 鞠小平 | The processing method of driving pinion bearing housing |
| CN103639665B (en) * | 2013-12-04 | 2017-01-04 | 鞠小平 | The processing method of driving pinion bearing housing |
| CN104191171A (en) * | 2014-08-17 | 2014-12-10 | 成都亨通兆业精密机械有限公司 | Method for machining bearing block for bearing impact loads |
| CN104259875A (en) * | 2014-08-17 | 2015-01-07 | 成都亨通兆业精密机械有限公司 | Bearing oil hole machining fixing seat |
| CN104148901A (en) * | 2014-08-17 | 2014-11-19 | 成都亨通兆业精密机械有限公司 | Bearing base production process capable of well reducing heat treatment defects |
| CN104148902A (en) * | 2014-08-17 | 2014-11-19 | 成都亨通兆业精密机械有限公司 | Machining method benefiting to hole boring quality and bearing base mechanical property |
| CN104942547B (en) * | 2015-07-01 | 2017-10-27 | 庄有土 | A kind of technique and its control specific machine for manufacturing rolling bearing units bearing block |
| CN107160114B (en) * | 2017-07-14 | 2019-05-10 | 重庆江增船舶重工有限公司 | The processing method of floating disc |
| CN108723709A (en) * | 2018-05-18 | 2018-11-02 | 靖江佳仁半导体科技有限公司 | A kind of processing method of CVD reaction chambers |
| CN110541888A (en) * | 2019-07-09 | 2019-12-06 | 嘉兴孚瑞精密五金科技有限公司 | Oil-cooled bearing seat and machining method thereof |
| CN111250929B (en) * | 2020-01-18 | 2021-01-01 | 浙江农业商贸职业学院 | Machining method for preventing roundness of bearing hole of bearing pedestal from being poor in locking state |
| CN111590215B (en) * | 2020-05-25 | 2022-06-21 | 广船国际有限公司 | Machining method of square anchor lip and square anchor lip |
| CN112275582A (en) * | 2020-09-22 | 2021-01-29 | 苏州润凯机械有限公司 | Spraying process of water-based high-temperature-resistant paint for fluid director |
| CN115647854B (en) * | 2022-09-26 | 2024-04-02 | 长沙中传航空传动有限公司 | Machining method for bearing support sleeve hole |
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- 2011-03-18 CN CN201110065201A patent/CN102152075B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102152075B (en) | 2012-09-19 |
| CN102848151B (en) | 2015-10-14 |
| CN102848150A (en) | 2013-01-02 |
| CN102152075A (en) | 2011-08-17 |
| CN102848151A (en) | 2013-01-02 |
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